X-Git-Url: http://git.asbjorn.biz/?p=swftools.git;a=blobdiff_plain;f=lib%2Fas3%2Fparser.y;h=b181866348f71342fe9c8aa543e112a830ae47b5;hp=32007bc3798d5f35190a02a0764a775263022aa1;hb=9ed9a87914fc9a590967d46de404e0f6290b7bb2;hpb=f5192a905ac6fe6406519f8b78c128fda3d4fd21 diff --git a/lib/as3/parser.y b/lib/as3/parser.y index 32007bc..b181866 100644 --- a/lib/as3/parser.y +++ b/lib/as3/parser.y @@ -1,4 +1,4 @@ -/* parser.lex +/* parser.y Routines for compiling Flash2 AVM2 ABC Actionscript @@ -27,10 +27,16 @@ #include "abc.h" #include "pool.h" #include "files.h" +#include "common.h" #include "tokenizer.h" #include "registry.h" #include "code.h" #include "opcodes.h" +#include "compiler.h" +#include "expr.h" +#include "initcode.h" + +extern int a3_lex(); %} @@ -40,10 +46,11 @@ %union tokenunion { enum yytokentype token; - int flags; classinfo_t*classinfo; classinfo_list_t*classinfo_list; + slotinfo_t*slotinfo; + slotinfo_list_t*slotinfo_list; int number_int; unsigned int number_uint; @@ -58,17 +65,24 @@ char*id; constant_t*constant; for_start_t for_start; + abc_exception_t *exception; + regexp_t regexp; + modifiers_t flags; + namespace_decl_t* namespace_decl; + node_t*node; + struct { + abc_exception_list_t *l; + code_t*finally; + } catch_list; } %token T_IDENTIFIER %token T_STRING -%token T_REGEXP +%token T_REGEXP %token T_EMPTY %token T_INT %token T_UINT -%token T_BYTE -%token T_SHORT %token T_FLOAT %token T_FOR "for" @@ -76,18 +90,21 @@ %token T_DO "do" %token T_SWITCH "switch" -%token KW_IMPLEMENTS +%token KW_IMPLEMENTS "implements" %token KW_NAMESPACE "namespace" %token KW_PACKAGE "package" -%token KW_PROTECTED -%token KW_PUBLIC -%token KW_PRIVATE +%token KW_PROTECTED "protected" +%token KW_ARGUMENTS "arguments" +%token KW_PUBLIC "public" +%token KW_PRIVATE "private" %token KW_USE "use" -%token KW_INTERNAL +%token KW_INTERNAL "internal" %token KW_NEW "new" -%token KW_NATIVE +%token KW_NATIVE "native" %token KW_FUNCTION "function" +%token KW_FINALLY "finally" %token KW_UNDEFINED "undefined" +%token KW_NAN "NaN" %token KW_CONTINUE "continue" %token KW_CLASS "class" %token KW_CONST "const" @@ -95,7 +112,9 @@ %token KW_CASE "case" %token KW_SET "set" %token KW_VOID "void" -%token KW_STATIC +%token KW_THROW "throw" +%token KW_STATIC "static" +%token KW_WITH "with" %token KW_INSTANCEOF "instanceof" %token KW_IMPORT "import" %token KW_RETURN "return" @@ -104,13 +123,13 @@ %token KW_NULL "null" %token KW_VAR "var" %token KW_DYNAMIC "dynamic" -%token KW_OVERRIDE -%token KW_FINAL +%token KW_OVERRIDE "override" +%token KW_FINAL "final" %token KW_EACH "each" %token KW_GET "get" %token KW_TRY "try" %token KW_SUPER "super" -%token KW_EXTENDS +%token KW_EXTENDS "extends" %token KW_FALSE "false" %token KW_TRUE "true" %token KW_BOOLEAN "Boolean" @@ -119,6 +138,7 @@ %token KW_NUMBER "Number" %token KW_STRING "String" %token KW_DEFAULT "default" +%token KW_DEFAULT_XML "default xml" %token KW_DELETE "delete" %token KW_IF "if" %token KW_ELSE "else" @@ -127,17 +147,21 @@ %token KW_IN "in" %token KW_AS "as" +%token T_DICTSTART "{ (dictionary)" %token T_EQEQ "==" %token T_EQEQEQ "===" %token T_NE "!=" %token T_NEE "!==" %token T_LE "<=" %token T_GE ">=" +%token T_ORBY "|=" %token T_DIVBY "/=" %token T_MODBY "%=" %token T_MULBY "*=" +%token T_ANDBY "&=" %token T_PLUSBY "+=" %token T_MINUSBY "-=" +%token T_XORBY "^=" %token T_SHRBY ">>=" %token T_SHLBY "<<=" %token T_USHRBY ">>>=" @@ -152,25 +176,31 @@ %token T_USHR ">>>" %token T_SHR ">>" +%type CONDITIONAL_COMPILATION EMBED_START %type FOR_START -%type X_IDENTIFIER PACKAGE FOR_IN_INIT +%type X_IDENTIFIER PACKAGE FOR_IN_INIT MAYBE_IDENTIFIER ID_OR_NS SUBNODE +%type NAMESPACE_ID %type VARCONST %type CODE %type CODEPIECE CODE_STATEMENT -%type CODEBLOCK MAYBECODE MAYBE_CASE_LIST CASE_LIST DEFAULT CASE SWITCH -%type PACKAGE_DECLARATION SLOT_DECLARATION +%type CODEBLOCK IF_CODEBLOCK MAYBECODE MAYBE_CASE_LIST CASE_LIST DEFAULT CASE SWITCH WITH +%type PACKAGE_DECLARATION SLOT_DECLARATION SLOT_LIST ONE_SLOT %type FUNCTION_DECLARATION PACKAGE_INITCODE -%type VARIABLE_DECLARATION ONE_VARIABLE VARIABLE_LIST +%type VARIABLE_DECLARATION ONE_VARIABLE VARIABLE_LIST THROW +%type CATCH FINALLY +%type CATCH_LIST CATCH_FINALLY_LIST %type CLASS_DECLARATION %type NAMESPACE_DECLARATION %type INTERFACE_DECLARATION %type VOIDEXPRESSION %type EXPRESSION NONCOMMAEXPRESSION -%type MAYBEEXPRESSION -%type E DELETE -%type CONSTANT -%type FOR FOR_IN IF WHILE DO_WHILE MAYBEELSE BREAK RETURN CONTINUE -%type USE_NAMESPACE +%type MAYBEEXPRESSION +%type DELETE +%type E COMMA_EXPRESSION +%type VAR_READ +%type FOR FOR_IN IF WHILE DO_WHILE MAYBEELSE BREAK RETURN CONTINUE TRY +%type INNERFUNCTION +%type USE_NAMESPACE DEFAULT_NAMESPACE %type FOR_INIT %type IMPORT %type MAYBETYPE @@ -180,20 +210,23 @@ %type MAYBE_PARAM_LIST %type MAYBE_MODIFIERS %type MODIFIER_LIST -%type STATICCONSTANT MAYBESTATICCONSTANT +%type MODIFIER +%type CONSTANT MAYBECONSTANT %type IMPLEMENTS_LIST -%type EXTENDS +%type EXTENDS CLASS_SPEC %type EXTENDS_LIST -%type CLASS PACKAGEANDCLASS QNAME -%type QNAME_LIST +%type CLASS PACKAGEANDCLASS +%type CLASS_SPEC_LIST +%type XMLEXPR1 XMLEXPR2 XML2 XMLNODE XMLATTRIBUTE XMLATTRIBUTES MAYBE_XMLATTRIBUTES XMLTEXT XML_ID_OR_EXPR XML %type TYPE //%type VARIABLE -%type VAR_READ +%type MEMBER %type NEW //%type T_IDENTIFIER -%type MODIFIER %type FUNCTIONCALL -%type MAYBE_EXPRESSION_LIST EXPRESSION_LIST MAYBE_PARAM_VALUES MAYBE_EXPRPAIR_LIST EXPRPAIR_LIST +%type MAYBE_EXPRESSION_LIST EXPRESSION_LIST EXPRESSION_LIST_AND_COMMA MAYBE_PARAM_VALUES +%type MAYBE_DICT_EXPRPAIR_LIST DICT_EXPRPAIR_LIST WITH_HEAD +%type DICTLH // precedence: from low to high @@ -207,11 +240,12 @@ %right '?' ':' %left "||" %left "&&" -%nonassoc '|' -%nonassoc '^' +%left '|' +%left '^' %nonassoc '&' %nonassoc "==" "!=" "===" "!==" %nonassoc "is" "as" "in" +%left below_lt %nonassoc "<=" '<' ">=" '>' "instanceof" // TODO: support "a < b < c" syntax? %left "<<" ">>" ">>>" %left below_minus @@ -220,27 +254,39 @@ %left plusplus_prefix minusminus_prefix '~' '!' "void" "delete" "typeof" //FIXME: *unary* + - should be here, too %left "--" "++" %nonassoc below_curly -%left '[' ']' '{' "new" '.' ".." "::" -%nonassoc T_IDENTIFIER + +%left '(' +%left new2 +%left '[' ']' "new" '{' "{ (dictionary)" '.' ".." "::" '@' + +%left T_IDENTIFIER "arguments" %left above_identifier %left below_else %nonassoc "else" -%left '(' // needed for "return" precedence: %nonassoc T_STRING T_REGEXP -%nonassoc T_INT T_UINT T_BYTE T_SHORT T_FLOAT -%nonassoc "false" "true" "null" "undefined" "super" - +%nonassoc T_INT T_UINT T_FLOAT KW_NAN +%nonassoc "false" "true" "null" "undefined" "super" "function" +%left above_function %{ -static int yyerror(char*s) +static int a3_error(char*s) { syntaxerror("%s", s); + return 0; //make gcc happy +} + +static void parsererror(const char*file, int line, const char*f) +{ + syntaxerror("internal error in %s, %s:%d", f, file, line); } +#define parserassert(b) {if(!(b)) parsererror(__FILE__, __LINE__,__func__);} + + static char* concat2(const char* t1, const char* t2) { int l1 = strlen(t1); @@ -267,50 +313,114 @@ static char* concat3(const char* t1, const char* t2, const char* t3) typedef struct _import { char*package; } import_t; - DECLARE_LIST(import); +DECLARE(methodstate); +DECLARE_LIST(methodstate); + typedef struct _classstate { /* class data */ classinfo_t*info; abc_class_t*abc; - code_t*init; - code_t*static_init; + + methodstate_t*init; + methodstate_t*static_init; + //code_t*init; + //code_t*static_init; + parsedclass_t*dependencies; + char has_constructor; } classstate_t; -typedef struct _methodstate { +struct _methodstate { /* method data */ - memberinfo_t*info; + methodinfo_t*info; + char has_exceptions; char late_binding; - /* code that needs to be executed at the start of - a method (like initializing local registers) */ - code_t*initcode; char is_constructor; char has_super; char is_global; -} methodstate_t; + char is_static; + int variable_count; + + dict_t*unresolved_variables; + dict_t*allvars; // all variables (in all sublevels, but not for inner functions) + + char inner; + char uses_parent_function; + char no_variable_scoping; + int uses_slots; + dict_t*slots; + int activation_var; + + int need_arguments; + + abc_method_t*abc; + int var_index; // for inner methods + int slot_index; // for inner methods + char is_a_slot; // for inner methods + + code_t*header; + + code_t*scope_code; + abc_exception_list_t*exceptions; + + methodstate_list_t*innerfunctions; +}; + +methodstate_t*methodstate_new() +{ + NEW(methodstate_t,m); + m->allvars = dict_new(); + return m; +} +void methodstate_destroy(methodstate_t*m) +{ + dict_destroy(m->unresolved_variables); m->unresolved_variables = 0; + list_free(m->innerfunctions);m->innerfunctions=0; + + if(m->allvars) { + DICT_ITERATE_DATA(m->allvars, void*, data) {free(data);} + m->allvars = 0; + } +} typedef struct _state { struct _state*old; int level; - + char*package; import_list_t*wildcard_imports; + dict_t*import_toplevel_packages; dict_t*imports; + + dict_t*namespaces; + namespace_list_t*active_namespace_urls; + char has_own_imports; + char new_vars; // e.g. transition between two functions + char xmlfilter; // are we inside a xmlobj..() filter? classstate_t*cls; methodstate_t*method; + + char*exception_name; + + int switch_var; dict_t*vars; } state_t; typedef struct _global { abc_file_t*file; - abc_script_t*init; - int variable_count; + parsedclass_list_t*classes; + abc_script_t*classinit; + + abc_script_t*init; //package-level code + + dict_t*token2info; + dict_t*file2token2info; } global_t; static global_t*global = 0; @@ -318,21 +428,25 @@ static state_t* state = 0; DECLARE_LIST(state); -#define MULTINAME(m,x) \ - multiname_t m;\ - namespace_t m##_ns;\ - registry_fill_multiname(&m, &m##_ns, x); - +/* protected handling here is a big hack: we just assume the protectedns + is package:class. the correct approach would be to add the proper + namespace to all protected members in the registry, even though that + would slow down searching */ #define MEMBER_MULTINAME(m,f,n) \ multiname_t m;\ namespace_t m##_ns;\ if(f) { \ - m##_ns.access = flags2access(f->flags); \ - m##_ns.name = ""; \ + m##_ns.access = ((slotinfo_t*)(f))->access; \ + if(m##_ns.access == ACCESS_NAMESPACE) \ + m##_ns.name = ((slotinfo_t*)(f))->package; \ + else if(m##_ns.access == ACCESS_PROTECTED && (f)->parent) \ + m##_ns.name = concat3((f)->parent->package,":",(f)->parent->name); \ + else \ + m##_ns.name = ""; \ m.type = QNAME; \ m.ns = &m##_ns; \ m.namespace_set = 0; \ - m.name = f->name; \ + m.name = ((slotinfo_t*)(f))->name; \ } else { \ m.type = MULTINAME; \ m.ns =0; \ @@ -353,16 +467,20 @@ DECLARE_LIST(state); static namespace_t ns1 = {ACCESS_PRIVATE, ""}; static namespace_t ns2 = {ACCESS_PROTECTED, ""}; static namespace_t ns3 = {ACCESS_PACKAGEINTERNAL, ""}; -static namespace_t ns4 = {ACCESS_PACKAGE, ""}; -static namespace_list_t nl4 = {&ns4,0}; +static namespace_t stdns = {ACCESS_PACKAGE, ""}; +static namespace_list_t nl4 = {&stdns,0}; static namespace_list_t nl3 = {&ns3,&nl4}; static namespace_list_t nl2 = {&ns2,&nl3}; static namespace_list_t nl1 = {&ns1,&nl2}; static namespace_set_t nopackage_namespace_set = {&nl1}; -static void init_globals() +static dict_t*definitions=0; +void as3_set_define(const char*c) { - global = rfx_calloc(sizeof(global_t)); + if(!definitions) + definitions = dict_new(); + if(!dict_contains(definitions,c)) + dict_put(definitions,c,0); } static void new_state() @@ -374,17 +492,20 @@ static void new_state() if(!s->imports) { s->imports = dict_new(); } + if(!s->import_toplevel_packages) { + s->import_toplevel_packages = dict_new(); + } state = s; state->level++; state->has_own_imports = 0; state->vars = dict_new(); state->old = oldstate; -} -static void state_has_imports() -{ - state->wildcard_imports = list_clone(state->wildcard_imports); - state->imports = dict_clone(state->imports); - state->has_own_imports = 1; + state->new_vars = 0; + + state->namespaces = dict_new(); + + if(oldstate) + state->active_namespace_urls = list_clone(oldstate->active_namespace_urls); } static void state_destroy(state_t*state) @@ -397,17 +518,12 @@ static void state_destroy(state_t*state) dict_destroy(state->imports);state->imports=0; } if(state->vars) { - int t; - for(t=0;tvars->hashsize;t++) { - dictentry_t*e =state->vars->slots[t]; - while(e) { - free(e->data);e->data=0; - e = e->next; - } - } dict_destroy(state->vars);state->vars=0; } + list_free(state->active_namespace_urls) + state->active_namespace_urls = 0; + free(state); } @@ -416,574 +532,1094 @@ static void old_state() if(!state || !state->old) syntaxerror("invalid nesting"); state_t*leaving = state; - state = state->old; - /*if(state->method->initcode) { - printf("residual initcode\n"); - code_dump(state->method->initcode, 0, 0, "", stdout); - }*/ - state_destroy(leaving); -} -void initialize_state() -{ - init_globals(); - new_state(); - - global->file = abc_file_new(); - global->file->flags &= ~ABCFILE_LAZY; - global->variable_count = 1; - global->init = abc_initscript(global->file, 0); - code_t*c = global->init->method->body->code; - - c = abc_getlocal_0(c); - c = abc_pushscope(c); - - /* findpropstrict doesn't just return a scope object- it - also makes it "active" somehow. Push local_0 on the - scope stack and read it back with findpropstrict, it'll - contain properties like "trace". Trying to find the same - property on a "vanilla" local_0 yields only a "undefined" */ - //c = abc_findpropstrict(c, "[package]::trace"); - - /*c = abc_getlocal_0(c); - c = abc_findpropstrict(c, "[package]::trace"); - c = abc_coerce_a(c); - c = abc_setlocal_1(c); + state = state->old; - c = abc_pushbyte(c, 0); - c = abc_setlocal_2(c); - - code_t*xx = c = abc_label(c); - c = abc_findpropstrict(c, "[package]::trace"); - c = abc_pushstring(c, "prop:"); - c = abc_hasnext2(c, 1, 2); - c = abc_dup(c); - c = abc_setlocal_3(c); - c = abc_callpropvoid(c, "[package]::trace", 2); - c = abc_getlocal_3(c); - c = abc_kill(c, 3); - c = abc_iftrue(c,xx);*/ - - c = abc_findpropstrict(c, "[package]::trace"); - c = abc_pushstring(c, "[entering global init function]"); - c = abc_callpropvoid(c, "[package]::trace", 1); - - global->init->method->body->code = c; -} -void* finalize_state() -{ - if(state->level!=1) { - syntaxerror("unexpected end of file"); + if(as3_pass>1 && leaving->method && leaving->method != state->method && !leaving->method->inner) { + methodstate_destroy(leaving->method);leaving->method=0; + } + if(as3_pass>1 && leaving->cls && leaving->cls != state->cls) { + free(leaving->cls); + leaving->cls=0; } - abc_method_body_t*m = global->init->method->body; - //__ popscope(m); - - __ findpropstrict(m, "[package]::trace"); - __ pushstring(m, "[leaving global init function]"); - __ callpropvoid(m, "[package]::trace", 1); - __ returnvoid(m); - - state_destroy(state); - - return global->file; -} - -static void startpackage(char*name) -{ - if(state->package) { - syntaxerror("Packages can not be nested."); - } - new_state(); - /*printf("entering package \"%s\"\n", name);*/ - state->package = strdup(name); - global->variable_count = 1; + state_destroy(leaving); } -static void endpackage() -{ - /*printf("leaving package \"%s\"\n", state->package);*/ - //used e.g. in classinfo_register: - //free(state->package);state->package=0; +static code_t* method_header(methodstate_t*m); +static code_t* wrap_function(code_t*c,code_t*header, code_t*body); +static void function_initvars(methodstate_t*m, char has_params, params_t*params, int flags, char var0); - old_state(); -} -char*globalclass=0; -static void startclass(int flags, char*classname, classinfo_t*extends, classinfo_list_t*implements, char interface) +static char* internal_filename_package = 0; +void initialize_file(char*filename) { - if(state->cls) { - syntaxerror("inner classes now allowed"); + if(state) { + syntaxerror("invalid call to initialize_file during parsing of another file"); } + new_state(); - global->variable_count = 1; - state->cls = rfx_calloc(sizeof(classstate_t)); - - token_list_t*t=0; - classinfo_list_t*mlist=0; - /*printf("entering class %s\n", name); - printf(" modifiers: ");for(t=modifiers->tokens;t;t=t->next) printf("%s ", t->token);printf("\n"); - if(extends) - printf(" extends: %s.%s\n", extends->package, extends->name); - printf(" implements (%d): ", list_length(implements)); - for(mlist=implements;mlist;mlist=mlist->next) { - printf("%s ", mlist->classinfo?mlist->classinfo->name:0); - } - printf("\n"); - */ - - if(flags&~(FLAG_INTERNAL|FLAG_PUBLIC|FLAG_FINAL|FLAG_DYNAMIC)) - syntaxerror("invalid modifier(s)"); - - if((flags&(FLAG_PUBLIC|FLAG_INTERNAL)) == (FLAG_PUBLIC|FLAG_INTERNAL)) - syntaxerror("public and internal not supported at the same time."); - - /* create the class name, together with the proper attributes */ - int access=0; - char*package=0; - - if(!(flags&FLAG_PUBLIC) && !state->package) { - access = ACCESS_PRIVATE; package = current_filename; - } else if(!(flags&FLAG_PUBLIC) && state->package) { - access = ACCESS_PACKAGEINTERNAL; package = state->package; - } else if(state->package) { - access = ACCESS_PACKAGE; package = state->package; - } else { - syntaxerror("public classes only allowed inside a package"); - } - - if(registry_findclass(package, classname)) { - syntaxerror("Package \"%s\" already contains a class called \"%s\"", package, classname); - } - - - /* build info struct */ - int num_interfaces = (list_length(implements)); - state->cls->info = classinfo_register(access, package, classname, num_interfaces); - state->cls->info->superclass = extends?extends:TYPE_OBJECT; - int pos = 0; - classinfo_list_t*l = implements; - for(l=implements;l;l=l->next) { - state->cls->info->interfaces[pos++] = l->classinfo; - } + state->package = internal_filename_package = strdup(filename); - multiname_t*extends2 = sig2mname(extends); - - MULTINAME(classname2,state->cls->info); - - /*if(extends) { - state->cls_init = abc_getlocal_0(state->cls_init); - state->cls_init = abc_constructsuper(state->cls_init, 0); - }*/ - - state->cls->abc = abc_class_new(global->file, &classname2, extends2); - if(flags&FLAG_FINAL) abc_class_final(state->cls->abc); - if(!(flags&FLAG_DYNAMIC)) abc_class_sealed(state->cls->abc); - if(interface) { - state->cls->info->flags |= CLASS_INTERFACE; - abc_class_interface(state->cls->abc); + global->token2info = dict_lookup(global->file2token2info, + current_filename // use long version + ); + if(!global->token2info) { + global->token2info = dict_new2(&ptr_type); + dict_put(global->file2token2info, current_filename, global->token2info); } - - abc_class_protectedNS(state->cls->abc, classname); - - for(mlist=implements;mlist;mlist=mlist->next) { - MULTINAME(m, mlist->classinfo); - abc_class_add_interface(state->cls->abc, &m); + + if(as3_pass==1) { + state->method = rfx_calloc(sizeof(methodstate_t)); + dict_put(global->token2info, (void*)(ptroff_t)as3_tokencount, state->method); + state->method->late_binding = 1; // init scripts use getglobalscope, so we need a getlocal0/pushscope + state->method->allvars = dict_new(); + } else { + state->method = dict_lookup(global->token2info, (void*)(ptroff_t)as3_tokencount); + state->method->variable_count = 0; + if(!state->method) + syntaxerror("internal error: skewed tokencount"); + function_initvars(state->method, 0, 0, 0, 1); + global->init = 0; } +} - /* now write the construction code for this class */ - int slotindex = abc_initscript_addClassTrait(global->init, &classname2, state->cls->abc); - - abc_method_body_t*m = global->init->method->body; - __ getglobalscope(m); - classinfo_t*s = extends; - - int count=0; +void finish_file() +{ + if(!state || state->level!=1) { + syntaxerror("unexpected end of file in pass %d", as3_pass); + } - while(s) { - //TODO: take a look at the current scope stack, maybe - // we can re-use something - s = s->superclass; - if(!s) - break; - - multiname_t*s2 = sig2mname(s); - __ getlex2(m, s2); - multiname_destroy(s2); - - __ pushscope(m); count++; - m->code = m->code->prev->prev; // invert - } - /* continue appending after last op end */ - while(m->code && m->code->next) m->code = m->code->next; - - /* TODO: if this is one of *our* classes, we can also - do a getglobalscope/getslot (which references - the init function's slots) */ - if(extends2) { - __ getlex2(m, extends2); - __ dup(m); - /* notice: we get a Verify Error #1107 if the top elemnt on the scope - stack is not the superclass */ - __ pushscope(m);count++; - } else { - __ pushnull(m); - /* notice: we get a verify error #1107 if the top element on the scope - stack is not the global object */ - __ getlocal_0(m); - __ pushscope(m);count++; - } - __ newclass(m,state->cls->abc); - while(count--) { - __ popscope(m); - } - __ setslot(m, slotindex); - - /* flash.display.MovieClip handling */ - if(!globalclass && (flags&FLAG_PUBLIC) && classinfo_equals(registry_getMovieClip(),extends)) { - if(state->package && state->package[0]) { - globalclass = concat3(state->package, ".", classname); - } else { - globalclass = strdup(classname); + if(as3_pass==2) { + dict_del(global->file2token2info, current_filename); + code_t*header = method_header(state->method); + //if(global->init->method->body->code || global->init->traits) { + if(global->init) { + code_t*c = wrap_function(header, 0, global->init->method->body->code); + global->init->method->body->code = abc_returnvoid(c); + free(state->method);state->method=0; } } - multiname_destroy(extends2); + + //free(state->package);state->package=0; // used in registry + state_destroy(state);state=0; } -static code_t* wrap_function(code_t*c,code_t*initcode, code_t*body) +void initialize_parser() { - c = code_append(c, initcode); - c = code_append(c, body); - /* append return if necessary */ - if(!c || c->opcode != OPCODE_RETURNVOID && - c->opcode != OPCODE_RETURNVALUE) { - c = abc_returnvoid(c); - } - return c; + global = rfx_calloc(sizeof(global_t)); + global->file = abc_file_new(); + global->file->flags &= ~ABCFILE_LAZY; + global->file2token2info = dict_new(); + global->token2info = 0; + global->classinit = abc_initscript(global->file); } -static void endclass() +void* finish_parser() { - if(!state->cls->has_constructor && !(state->cls->info->flags&CLASS_INTERFACE)) { - code_t*c = 0; - c = abc_getlocal_0(c); - c = abc_constructsuper(c, 0); - state->cls->init = code_append(state->cls->init, c); - } - - if(state->cls->init) { - abc_method_t*m = abc_class_getconstructor(state->cls->abc, 0); - m->body->code = wrap_function(0, state->cls->init, m->body->code); - } - if(state->cls->static_init) { - abc_method_t*m = abc_class_getstaticconstructor(state->cls->abc, 0); - m->body->code = wrap_function(0, state->cls->static_init, m->body->code); - } else { - // handy for scope testing - /*code_t*c = 0; - c = abc_pop(c); - c = abc_pop(c); - abc_class_getstaticconstructor(state->cls->abc,0)->body->code = c;*/ - } + dict_free_all(global->file2token2info, 1, (void*)dict_destroy); + global->token2info=0; + + initcode_add_classlist(global->classinit, global->classes); - free(state->cls);state->cls=0; - old_state(); + return global->file; } typedef struct _variable { int index; classinfo_t*type; + char init; + char kill; + char is_parameter; + methodstate_t*is_inner_method; } variable_t; -static variable_t* find_variable(char*name) +static variable_t* find_variable(state_t*s, const char*name) { - state_t* s = state; - while(s) { - variable_t*v = 0; - if(s->method) + if(s->method->no_variable_scoping) { + return dict_lookup(s->method->allvars, name); + } else { + state_t*top = s; + while(s) { + variable_t*v = 0; v = dict_lookup(s->vars, name); - if(v) { - return v; + if(v) return v; + if(s->new_vars) break; + s = s->old; } - s = s->old; + return 0; } +} +static variable_t* find_slot(methodstate_t*m, const char*name) +{ + if(m && m->slots) + return dict_lookup(m->slots, name); return 0; -} -static variable_t* find_variable_safe(char*name) +} + +static variable_t* find_variable_safe(state_t*s, char*name) { - variable_t* v = find_variable(name); + variable_t* v = find_variable(s, name); if(!v) syntaxerror("undefined variable: %s", name); return v; } + static char variable_exists(char*name) { - return dict_lookup(state->vars, name)!=0; + return dict_contains(state->vars, name); +} + +static code_t*defaultvalue(code_t*c, classinfo_t*type) +{ + parserassert(!type || type->kind!=INFOTYPE_UNRESOLVED); + if(TYPE_IS_INT(type)) { + c = abc_pushbyte(c, 0); + } else if(TYPE_IS_UINT(type)) { + c = abc_pushuint(c, 0); + } else if(TYPE_IS_FLOAT(type)) { + c = abc_pushnan(c); + } else if(TYPE_IS_BOOLEAN(type)) { + c = abc_pushfalse(c); + } else if(TYPE_IS_STRING(type)) { + c = abc_pushnull(c); + c = abc_coerce_s(c); + } else if(!type) { + //c = abc_pushundefined(c); + syntaxerror("internal error: can't generate default value for * type"); + } else { + c = abc_pushnull(c); + MULTINAME(m, type); + c = abc_coerce2(c, &m); + } + return c; +} + +static int alloc_local() +{ + return state->method->variable_count++; } -code_t*defaultvalue(code_t*c, classinfo_t*type); -static int new_variable(char*name, classinfo_t*type, char init) + +static variable_t* new_variable2(methodstate_t*method, const char*name, classinfo_t*type, char init, char maybeslot) { + if(maybeslot) { + variable_t*v = find_slot(method, name); + if(v) { + alloc_local(); + return v; + } + } + NEW(variable_t, v); - v->index = global->variable_count; + v->index = alloc_local(); v->type = type; - - dict_put(state->vars, name, v); - - if(init && state->method && type) { - /* if this is a typed variable: - push default value for type on stack at the very beginning of the - method, so that it always has that type regardless of the control - path */ - state->method->initcode = defaultvalue(state->method->initcode, type); - state->method->initcode = abc_setlocal(state->method->initcode, v->index); + v->init = v->kill = init; + + if(name) { + if(!method->no_variable_scoping) + { + if(dict_contains(state->vars, name)) { + syntaxerror("variable %s already defined", name); + } + dict_put(state->vars, name, v); + } + if(method->no_variable_scoping && + as3_pass==2 && + dict_contains(state->method->allvars, name)) + { + variable_t*v = dict_lookup(state->method->allvars, name); + if(v->type != type && (!v->type || v->type->kind!=INFOTYPE_UNRESOLVED)) { + syntaxerror("variable %s already defined.", name); + } + return v; + } + dict_put(state->method->allvars, name, v); } - return global->variable_count++; + + return v; } +static int new_variable(methodstate_t*method, const char*name, classinfo_t*type, char init, char maybeslot) +{ + return new_variable2(method, name, type, init, maybeslot)->index; +} + #define TEMPVARNAME "__as3_temp__" -static int gettempvar() +int gettempvar() { - variable_t*v = find_variable(TEMPVARNAME); + variable_t*v = find_variable(state, TEMPVARNAME); + int i; if(v) - return v->index; - return new_variable(TEMPVARNAME, 0, 0); + i = v->index; + else + i = new_variable(state->method, TEMPVARNAME, 0, 0, 0); + parserassert(i); + return i; } -code_t* killvars(code_t*c) +static code_t* var_block(code_t*body, dict_t*vars) { + code_t*c = 0; + code_t*k = 0; int t; - for(t=0;tvars->hashsize;t++) { - dictentry_t*e =state->vars->slots[t]; - while(e) { - variable_t*v = (variable_t*)e->data; - //do this always, otherwise register types don't match - //in the verifier when doing nested loops - //if(!TYPE_IS_BUILTIN_SIMPLE(type)) { - c = abc_kill(c, v->index); - e = e->next; + DICT_ITERATE_DATA(vars, variable_t*, v) { + if(v->type && v->init) { + c = defaultvalue(c, v->type); + c = abc_setlocal(c, v->index); + } + if(v->type && v->kill) { + k = abc_kill(k, v->index); } } - return c; -} -void check_code_for_break(code_t*c) -{ - while(c) { - if(c->opcode == OPCODE___BREAK__) { - char*name = string_cstr(c->data[0]); - syntaxerror("Unresolved \"break %s\"", name); - } - if(c->opcode == OPCODE___CONTINUE__) { - char*name = string_cstr(c->data[0]); - syntaxerror("Unresolved \"continue %s\"", name); + if(k) { + code_t*x = body; + while(x) { + if(x->opcode== OPCODE___BREAK__ || + x->opcode== OPCODE___CONTINUE__) { + /* link kill code before break/continue */ + code_t*e = code_dup(k); + code_t*s = code_start(e); + s->prev = x->prev; + if(x->prev) { + x->prev->next = s; + } + e->next = x; + x->prev = e; + } + x = x->prev; } - c=c->prev; } + + c = code_append(c, body); + c = code_append(c, k); + return c; } - -static void check_constant_against_type(classinfo_t*t, constant_t*c) +static void unknown_variable(char*name) { -#define xassert(b) if(!(b)) syntaxerror("Invalid default value %s for type '%s'", constant_tostring(c), t->name) - if(TYPE_IS_NUMBER(t)) { - xassert(c->type == CONSTANT_FLOAT - || c->type == CONSTANT_INT - || c->type == CONSTANT_UINT); - } else if(TYPE_IS_UINT(t)) { - xassert(c->type == CONSTANT_UINT || - (c->type == CONSTANT_INT && c->i>0)); - } else if(TYPE_IS_INT(t)) { - xassert(c->type == CONSTANT_INT); - } else if(TYPE_IS_BOOLEAN(t)) { - xassert(c->type == CONSTANT_TRUE - || c->type == CONSTANT_FALSE); - } + if(!state->method->unresolved_variables) + state->method->unresolved_variables = dict_new(); + if(!dict_contains(state->method->unresolved_variables, name)) + dict_put(state->method->unresolved_variables, name, 0); } -static int flags2access(int flags) +static code_t* add_scope_code(code_t*c, methodstate_t*m, char init) { - int access = 0; - if(flags&FLAG_PUBLIC) { - if(access&(FLAG_PRIVATE|FLAG_PROTECTED|FLAG_INTERNAL)) syntaxerror("invalid combination of access levels"); - access = ACCESS_PACKAGE; - } else if(flags&FLAG_PRIVATE) { - if(access&(FLAG_PUBLIC|FLAG_PROTECTED|FLAG_INTERNAL)) syntaxerror("invalid combination of access levels"); - access = ACCESS_PRIVATE; - } else if(flags&FLAG_PROTECTED) { - if(access&(FLAG_PUBLIC|FLAG_PRIVATE|FLAG_INTERNAL)) syntaxerror("invalid combination of access levels"); - access = ACCESS_PROTECTED; - } else { - access = ACCESS_PACKAGEINTERNAL; + if(m->uses_slots || m->innerfunctions || (m->late_binding && !m->inner)) { + c = abc_getlocal_0(c); + c = abc_pushscope(c); + } + if(m->uses_slots) { + /* FIXME: this alloc_local() causes variable indexes to be + different in pass2 than in pass1 */ + if(!m->activation_var) { + m->activation_var = alloc_local(); + } + if(init) { + c = abc_newactivation(c); + c = abc_dup(c); + c = abc_pushscope(c); + c = abc_setlocal(c, m->activation_var); + } else { + c = abc_getlocal(c, m->activation_var); + c = abc_pushscope(c); + } } - return access; + return c; } -static memberinfo_t*registerfunction(enum yytokentype getset, int flags, char*name, params_t*params, classinfo_t*return_type, int slot) +static code_t* method_header(methodstate_t*m) { - memberinfo_t*minfo = 0; - if(!state->cls) { - //package method - minfo = rfx_calloc(sizeof(memberinfo_t)); - classinfo_t*c = classinfo_register(flags2access(flags), state->package, name, 0); - c->flags |= FLAG_METHOD; - c->function = minfo; - minfo->kind = MEMBER_METHOD; - minfo->name = name; - minfo->flags = FLAG_STATIC; - minfo->return_type = return_type; - } else if(getset != KW_GET && getset != KW_SET) { - //class method - if((minfo = registry_findmember(state->cls->info, name, 0))) { - if(minfo->parent == state->cls->info) { - syntaxerror("class already contains a member/method called '%s'", name); - } else if(!minfo->parent) { - syntaxerror("internal error: overriding method %s, which doesn't have parent", name); - } else { - if(!(minfo->flags&(FLAG_STATIC|FLAG_PRIVATE))) - syntaxerror("function %s already exists in superclass. Did you forget the 'override' keyword?"); - } - } - minfo = memberinfo_register(state->cls->info, name, MEMBER_METHOD); - minfo->return_type = return_type; - // getslot on a member slot only returns "undefined", so no need - // to actually store these - //state->minfo->slot = state->method->abc->method->trait->slot_id; + code_t*c = 0; + + c = add_scope_code(c, m, 1); + + methodstate_list_t*l = m->innerfunctions; + while(l) { + parserassert(l->methodstate->abc); + if(m->uses_slots && l->methodstate->is_a_slot) { + c = abc_getscopeobject(c, 1); + c = abc_newfunction(c, l->methodstate->abc); + c = abc_dup(c); + c = abc_setlocal(c, l->methodstate->var_index); + c = abc_setslot(c, l->methodstate->slot_index); + } else { + c = abc_newfunction(c, l->methodstate->abc); + c = abc_setlocal(c, l->methodstate->var_index); + } + free(l->methodstate);l->methodstate=0; + l = l->next; + } + if(m->header) { + c = code_append(c, m->header); + m->header = 0; + } + if(m->is_constructor && !m->has_super) { + // call default constructor + c = abc_getlocal_0(c); + c = abc_constructsuper(c, 0); + } + + if(m->slots) { + /* all parameters that are used by inner functions + need to be copied from local to slot */ + parserassert(m->activation_var); + DICT_ITERATE_ITEMS(m->slots,char*,name,variable_t*,v) { + if(v->is_parameter) { + c = abc_getlocal(c, m->activation_var); + c = abc_getlocal(c, v->index); + c = abc_setslot(c, v->index); + } + } + } + list_free(m->innerfunctions); + m->innerfunctions = 0; + return c; +} + + +static code_t* wrap_function(code_t*c,code_t*header, code_t*body) +{ + c = code_append(c, header); + c = code_append(c, var_block(body, state->method->no_variable_scoping?state->method->allvars:state->vars)); + /* append return if necessary */ + if(!c || (c->opcode != OPCODE_RETURNVOID && + c->opcode != OPCODE_RETURNVALUE)) { + c = abc_returnvoid(c); + } + return c; +} + +static void startpackage(char*name) +{ + new_state(); + state->package = strdup(name); +} +static void endpackage() +{ + //used e.g. in classinfo_register: + //free(state->package);state->package=0; + old_state(); +} + +#define FLAG_PUBLIC 256 +#define FLAG_PROTECTED 512 +#define FLAG_PRIVATE 1024 +#define FLAG_PACKAGEINTERNAL 2048 +#define FLAG_NAMESPACE 4096 + +static slotinfo_t* find_class(const char*name); + +const char* lookup_namespace(const char*name) +{ + state_t*s = state; + while(s) { + const char*url = dict_lookup(s->namespaces, name); + if(url) + return url; + s = s->old; + } + varinfo_t*a; + registry_find(state->package, name); + if(( a = (varinfo_t*)find_class(name) )) { + if(a->kind == INFOTYPE_VAR) { + if(!a->value || !NS_TYPE(a->value->type)) + syntaxerror("%s.%s is not a namespace", a->package, a->name); + return a->value->ns->name; + } + } + return 0; +} + +static namespace_t modifiers2access(modifiers_t*mod) +{ + namespace_t ns; + ns.access = 0; + ns.name = ""; + if(mod->flags&FLAG_NAMESPACE) { + if(mod->flags&(FLAG_PRIVATE|FLAG_PROTECTED|FLAG_PACKAGEINTERNAL)) + syntaxerror("invalid combination of access levels and namespaces"); + ns.access = ACCESS_NAMESPACE; + const char*url = lookup_namespace(mod->ns); + if(!url) { + if(as3_pass>1) { + syntaxerror("unknown namespace: %s (pass %d)", mod->ns, as3_pass); + } else { + url = mod->ns; + } + } + ns.name = url; + } else if(mod->flags&FLAG_PUBLIC) { + if(mod->flags&(FLAG_PRIVATE|FLAG_PROTECTED|FLAG_PACKAGEINTERNAL)) + syntaxerror("invalid combination of access levels"); + ns.access = ACCESS_PACKAGE; + } else if(mod->flags&FLAG_PRIVATE) { + if(mod->flags&(FLAG_PUBLIC|FLAG_PROTECTED|FLAG_PACKAGEINTERNAL)) + syntaxerror("invalid combination of access levels"); + ns.access = ACCESS_PRIVATE; + } else if(mod->flags&FLAG_PROTECTED) { + if(mod->flags&(FLAG_PUBLIC|FLAG_PRIVATE|FLAG_PACKAGEINTERNAL)) + syntaxerror("invalid combination of access levels"); + ns.access = ACCESS_PROTECTED; + } else { + ns.access = ACCESS_PACKAGEINTERNAL; + } + return ns; +} + +static memberinfo_t* findmember_nsset(classinfo_t*cls, const char*name, char recurse, char is_static) +{ + return registry_findmember_nsset(cls, state->active_namespace_urls, name, recurse, is_static); +} + +static void innerfunctions2vars(methodstate_t*m) +{ + methodstate_list_t*l = m->innerfunctions; + while(l) { + methodstate_t*m = l->methodstate; + + variable_t* v = new_variable2(state->method, m->info->name, TYPE_FUNCTION(m->info), 0, 0); + m->var_index = v->index; + if(m->is_a_slot) + m->slot_index = m->is_a_slot; + v->is_inner_method = m; + l = l->next; + } +} + +static void function_initvars(methodstate_t*m, char has_params, params_t*params, int flags, char var0) +{ + if(var0) { + int index = -1; + if(m->inner) + index = new_variable(m, "this", 0, 0, 0); + else if(!m->is_global) + index = new_variable(m, (flags&FLAG_STATIC)?"class":"this", state->cls?state->cls->info:0, 0, 0); + else + index = new_variable(m, "globalscope", 0, 0, 0); + if(index) { + DICT_ITERATE_ITEMS(state->vars, char*, name, variable_t*, v) { + printf("%s %d\n", name, v->index); + } + } + parserassert(!index); + } + + if(has_params) { + param_list_t*p=0; + for(p=params->list;p;p=p->next) { + variable_t*v = new_variable2(m, p->param->name, p->param->type, 0, 1); + v->is_parameter = 1; + } + if(as3_pass==2 && m->need_arguments) { + /* arguments can never be used by an innerfunction (the inner functions + have their own arguments var), so it's ok to not initialize this until + pass 2. (We don't know whether we need it before, anyway) */ + variable_t*v = new_variable2(m, "arguments", TYPE_ARRAY, 0, 0); + m->need_arguments = v->index; + } + } + + innerfunctions2vars(m); + + if(as3_pass==2) { + m->scope_code = add_scope_code(m->scope_code, m, 0); + if(m->slots) { + /* exchange unresolved identifiers with the actual objects */ + DICT_ITERATE_ITEMS(m->slots, char*, name, variable_t*, v1) { + if(v1->type && v1->type->kind == INFOTYPE_UNRESOLVED) { + classinfo_t*type = (classinfo_t*)registry_resolve((slotinfo_t*)v1->type); + if(!type || type->kind != INFOTYPE_CLASS) { + syntaxerror("Couldn't find class %s::%s (%s)", v1->type->package, v1->type->name, name); + } + v1->type = type; + } + } + } + if(m->allvars) { + DICT_ITERATE_ITEMS(m->allvars, char*, name2, variable_t*, v2) { + if(v2->type && v2->type->kind == INFOTYPE_UNRESOLVED) { + classinfo_t*type = (classinfo_t*)registry_resolve((slotinfo_t*)v2->type); + if(!type || type->kind != INFOTYPE_CLASS) { + syntaxerror("Couldn't find class %s::%s (%s)", v2->type->package, v2->type->name, name2); + } + v2->type = type; + } + } + } + } +} + + +char*as3_globalclass=0; +static void startclass(modifiers_t* mod, char*classname, classinfo_t*extends, classinfo_list_t*implements) +{ + if(state->cls) { + syntaxerror("inner classes now allowed"); + } + + new_state(); + token_list_t*t=0; + classinfo_list_t*mlist=0; + + if(mod->flags&~(FLAG_PACKAGEINTERNAL|FLAG_PUBLIC|FLAG_FINAL|FLAG_DYNAMIC|FLAG_INTERFACE)) + syntaxerror("invalid modifier(s)"); + + if((mod->flags&(FLAG_PUBLIC|FLAG_PACKAGEINTERNAL)) == (FLAG_PUBLIC|FLAG_PACKAGEINTERNAL)) + syntaxerror("public and internal not supported at the same time."); + + if((mod->flags&(FLAG_PROTECTED|FLAG_STATIC)) == (FLAG_PROTECTED|FLAG_STATIC)) + syntaxerror("protected and static not supported at the same time."); + + //if(!(mod->flags&FLAG_INTERFACE) && !extends) { + if(!(mod->flags&FLAG_INTERFACE) && !extends) { + // all classes extend object + extends = registry_getobjectclass(); + } + + /* create the class name, together with the proper attributes */ + int access=0; + char*package=0; + + if(!(mod->flags&FLAG_PUBLIC) && state->package==internal_filename_package) { + access = ACCESS_PRIVATE; package = internal_filename_package; + } else if(!(mod->flags&FLAG_PUBLIC) && state->package!=internal_filename_package) { + access = ACCESS_PACKAGEINTERNAL; package = state->package; + } else if(state->package!=internal_filename_package) { + access = ACCESS_PACKAGE; package = state->package; + } else { + syntaxerror("public classes only allowed inside a package"); + } + + if(as3_pass==1) { + state->cls = rfx_calloc(sizeof(classstate_t)); + state->cls->init = methodstate_new(); + state->cls->static_init = methodstate_new(); + state->cls->static_init->is_static=FLAG_STATIC; + /* notice: we make no effort to initialize the top variable (local0) here, + even though it has special meaning. We just rely on the fact + that pass 1 won't do anything with variables */ + + dict_put(global->token2info, (void*)(ptroff_t)as3_tokencount, state->cls); + + /* set current method to constructor- all code within the class-level (except + static variable initializations) will be executed during construction time */ + state->method = state->cls->init; + + if(registry_find(package, classname)) { + syntaxerror("Package \"%s\" already contains a class called \"%s\"", package, classname); + } + /* build info struct */ + int num_interfaces = (list_length(implements)); + state->cls->info = classinfo_register(access, package, classname, num_interfaces); + state->cls->info->flags |= mod->flags & (FLAG_DYNAMIC|FLAG_INTERFACE|FLAG_FINAL); + state->cls->info->superclass = extends; + + int pos = 0; + classinfo_list_t*l = implements; + for(l=implements;l;l=l->next) { + state->cls->info->interfaces[pos++] = l->classinfo; + } + } + + if(as3_pass == 2) { + state->cls = dict_lookup(global->token2info, (void*)(ptroff_t)as3_tokencount); + + parserassert(state->cls && state->cls->info); + + state->method = state->cls->static_init; + + function_initvars(state->cls->init, 0, 0, 0, 1); + state->cls->static_init->variable_count=1; + function_initvars(state->cls->static_init, 0, 0, 0, 0); + + if(extends && (extends->flags & FLAG_FINAL)) + syntaxerror("Can't extend final class '%s'", extends->name); + + int pos = 0; + while(state->cls->info->interfaces[pos]) { + if(!(state->cls->info->interfaces[pos]->flags & FLAG_INTERFACE)) + syntaxerror("'%s' is not an interface", + state->cls->info->interfaces[pos]->name); + pos++; + } + + /* generate the abc code for this class */ + MULTINAME(classname2,state->cls->info); + multiname_t*extends2 = sig2mname(extends); + + /* don't add the class to the class index just yet- that will be done later + by initscript */ + state->cls->abc = abc_class_new(0, &classname2, extends2); + state->cls->abc->file = global->file; + + multiname_destroy(extends2); + if(state->cls->info->flags&FLAG_FINAL) abc_class_final(state->cls->abc); + if(!(state->cls->info->flags&FLAG_DYNAMIC)) abc_class_sealed(state->cls->abc); + if(state->cls->info->flags&FLAG_INTERFACE) { + abc_class_interface(state->cls->abc); + } + + for(mlist=implements;mlist;mlist=mlist->next) { + MULTINAME(m, mlist->classinfo); + abc_class_add_interface(state->cls->abc, &m); + } + + state->cls->dependencies = parsedclass_new(state->cls->info, state->cls->abc); + list_append(global->classes, state->cls->dependencies); + + /* flash.display.MovieClip handling */ + if(!as3_globalclass && (mod->flags&FLAG_PUBLIC) && slotinfo_equals((slotinfo_t*)registry_getMovieClip(),(slotinfo_t*)extends)) { + if(state->package && state->package[0]) { + as3_globalclass = concat3(state->package, ".", classname); + } else { + as3_globalclass = strdup(classname); + } + } + } +} + +static void endclass() +{ + if(as3_pass == 2) { + if(!state->cls->has_constructor && !(state->cls->info->flags&FLAG_INTERFACE)) { + code_t*c = 0; + c = abc_getlocal_0(c); + c = abc_constructsuper(c, 0); + state->cls->init->header = code_append(state->cls->init->header, c); + state->cls->has_constructor=1; + } + if(state->cls->init) { + if(state->cls->info->flags&FLAG_INTERFACE) { + if(state->cls->init->header) + syntaxerror("interface can not have class-level code"); + } else { + abc_method_t*m = abc_class_getconstructor(state->cls->abc, 0); + code_t*c = method_header(state->cls->init); + m->body->code = wrap_function(c, 0, m->body->code); + } + } + if(state->cls->static_init) { + abc_method_t*m = abc_class_getstaticconstructor(state->cls->abc, 0); + code_t*c = method_header(state->cls->static_init); + m->body->code = wrap_function(c, 0, m->body->code); + } + + trait_list_t*trait = state->cls->abc->traits; + /* switch all protected members to the protected ns of this class */ + while(trait) { + trait_t*t = trait->trait; + if(t->name->ns->access == ACCESS_PROTECTED) { + if(!state->cls->abc->protectedNS) { + char*n = concat3(state->cls->info->package, ":", state->cls->info->name); + state->cls->abc->protectedNS = namespace_new_protected(n); + state->cls->abc->flags |= CLASS_PROTECTED_NS; + } + t->name->ns->name = strdup(state->cls->abc->protectedNS->name); + } + trait = trait->next; + } + } + + old_state(); +} + +void check_code_for_break(code_t*c) +{ + while(c) { + if(c->opcode == OPCODE___BREAK__) { + char*name = string_cstr(c->data[0]); + syntaxerror("Unresolved \"break %s\"", name); + } + if(c->opcode == OPCODE___CONTINUE__) { + char*name = string_cstr(c->data[0]); + syntaxerror("Unresolved \"continue %s\"", name); + } + if(c->opcode == OPCODE___RETHROW__) { + syntaxerror("Unresolved \"rethrow\""); + } + if(c->opcode == OPCODE___FALLTHROUGH__) { + syntaxerror("Unresolved \"fallthrough\""); + } + if(c->opcode == OPCODE___PUSHPACKAGE__) { + char*name = string_cstr(c->data[0]); + syntaxerror("Can't reference a package (%s) as such", name); + } + c=c->prev; + } +} + +static void check_constant_against_type(classinfo_t*t, constant_t*c) +{ +#define xassert(b) if(!(b)) syntaxerror("Invalid default value %s for type '%s'", constant_tostring(c), t->name) + if(TYPE_IS_NUMBER(t)) { + xassert(c->type == CONSTANT_FLOAT + || c->type == CONSTANT_INT + || c->type == CONSTANT_UINT); + } else if(TYPE_IS_UINT(t)) { + xassert(c->type == CONSTANT_UINT || + (c->type == CONSTANT_INT && c->i>=0)); + } else if(TYPE_IS_INT(t)) { + xassert(c->type == CONSTANT_INT); + } else if(TYPE_IS_BOOLEAN(t)) { + xassert(c->type == CONSTANT_TRUE + || c->type == CONSTANT_FALSE); + } +} + +static void check_override(memberinfo_t*m, int flags) +{ + if(!m) + return; + if(m->parent == state->cls->info && !((flags^m->flags)&FLAG_STATIC)) + syntaxerror("class '%s' already contains a method/slot '%s'", m->parent->name, m->name); + if(!m->parent) + syntaxerror("internal error: overriding method %s, which doesn't have parent", m->name); + if(m->access==ACCESS_PRIVATE) + return; + if(m->flags & FLAG_FINAL) + syntaxerror("can't override final member %s", m->name); + + /* allow this. it's no issue. + if((m->flags & FLAG_STATIC) && !(flags&FLAG_STATIC)) + syntaxerror("can't override static member %s", m->name);*/ + + if(!(m->flags & FLAG_STATIC) && (flags&FLAG_STATIC)) + syntaxerror("can't override non-static member %s with static declaration", m->name); + + if(!(flags&FLAG_OVERRIDE) && !(flags&FLAG_STATIC) && !(m->flags&FLAG_STATIC)) { + if(m->parent && !(m->parent->flags&FLAG_INTERFACE)) { + if(m->kind == INFOTYPE_METHOD) + syntaxerror("can't override without explicit 'override' declaration"); + else + syntaxerror("can't override '%s'", m->name); + } + } +} + +static methodinfo_t*registerfunction(enum yytokentype getset, modifiers_t*mod, char*name, params_t*params, classinfo_t*return_type, int slot) +{ + methodinfo_t*minfo = 0; + namespace_t ns = modifiers2access(mod); + if(!state->cls) { + //package method + minfo = methodinfo_register_global(ns.access, state->package, name); + minfo->return_type = return_type; + } else if(getset != KW_GET && getset != KW_SET) { + //class method + memberinfo_t* m = registry_findmember(state->cls->info, ns.name, name, 0, mod->flags&FLAG_STATIC); + if(m) { + syntaxerror("class already contains a %s '%s'", infotypename((slotinfo_t*)m), m->name); + } + minfo = methodinfo_register_onclass(state->cls->info, ns.access, ns.name, name, mod->flags&FLAG_STATIC); + minfo->return_type = return_type; + // getslot on a member slot only returns "undefined", so no need + // to actually store these + //state->minfo->slot = state->method->abc->method->trait->slot_id; } else { //class getter/setter - int gs = getset==KW_GET?MEMBER_GET:MEMBER_SET; + int gs = getset==KW_GET?SUBTYPE_GET:SUBTYPE_SET; classinfo_t*type=0; - if(getset == KW_GET) + if(getset == KW_GET) { type = return_type; - else if(params->list) + } else if(params->list && params->list->param && !params->list->next) { type = params->list->param->type; + } else + syntaxerror("setter function needs to take exactly one argument"); // not sure wether to look into superclasses here, too - if((minfo=registry_findmember(state->cls->info, name, 0))) { - if(minfo->kind & ~(MEMBER_GET|MEMBER_SET)) - syntaxerror("class already contains a member or method called '%s'", name); - if(minfo->kind & gs) + minfo = (methodinfo_t*)registry_findmember(state->cls->info, ns.name, name, 1, mod->flags&FLAG_STATIC); + if(minfo) { + if(minfo->kind!=INFOTYPE_VAR) + syntaxerror("class already contains a method called '%s'", name); + if(!(minfo->subtype & (SUBTYPE_GETSET))) + syntaxerror("class already contains a field called '%s'", name); + if(minfo->subtype & gs) syntaxerror("getter/setter for '%s' already defined", name); /* make a setter or getter into a getset */ - minfo->kind |= gs; - if(!minfo->type) - minfo->type = type; - else - if(type && minfo->type != type) - syntaxerror("different type in getter and setter"); + minfo->subtype |= gs; + + /* + FIXME: this check needs to be done in pass 2 + + if((!minfo->return_type != !type) || + (minfo->return_type && type && + !strcmp(minfo->return_type->name, type->name))) { + syntaxerror("different type in getter and setter: %s and %s", + minfo->return_type?minfo->return_type->name:"*", + type?type->name:"*"); + }*/ } else { - minfo = memberinfo_register(state->cls->info, name, gs); - minfo->type = type; + minfo = methodinfo_register_onclass(state->cls->info, ns.access, ns.name, name, mod->flags&FLAG_STATIC); + minfo->kind = INFOTYPE_VAR; //hack + minfo->subtype = gs; + minfo->return_type = type; } + /* can't assign a slot as getter and setter might have different slots */ //minfo->slot = slot; } - if(flags&FLAG_STATIC) minfo->flags |= FLAG_STATIC; - if(flags&FLAG_PUBLIC) minfo->flags |= FLAG_PUBLIC; - if(flags&FLAG_PRIVATE) minfo->flags |= FLAG_PRIVATE; - if(flags&FLAG_PROTECTED) minfo->flags |= FLAG_PROTECTED; - if(flags&FLAG_INTERNAL) minfo->flags |= FLAG_INTERNAL; - if(flags&FLAG_OVERRIDE) minfo->flags |= FLAG_OVERRIDE; + if(mod->flags&FLAG_FINAL) minfo->flags |= FLAG_FINAL; + if(mod->flags&FLAG_STATIC) minfo->flags |= FLAG_STATIC; + if(mod->flags&FLAG_OVERRIDE) minfo->flags |= FLAG_OVERRIDE; + return minfo; } -static void startfunction(token_t*ns, int flags, enum yytokentype getset, char*name, +static void innerfunction(char*name, params_t*params, classinfo_t*return_type) +{ + //parserassert(state->method && state->method->info); + + methodstate_t*parent_method = state->method; + variable_t*v = 0; + + if(as3_pass==1) { + return_type = 0; // not valid in pass 1 + if(name) { + v = new_variable2(parent_method, name, 0, 0, 0); + } + } + + new_state(); + state->new_vars = 1; + + if(as3_pass == 1) { + state->method = methodstate_new(); + state->method->inner = 1; + state->method->is_static = parent_method->is_static; + state->method->variable_count = 0; + state->method->abc = rfx_calloc(sizeof(abc_method_t)); + if(v) { + v->is_inner_method = state->method; + } + + NEW(methodinfo_t,minfo); + minfo->kind = INFOTYPE_METHOD; + minfo->access = ACCESS_PACKAGEINTERNAL; + minfo->name = name; + state->method->info = minfo; + + if(parent_method) + list_append(parent_method->innerfunctions, state->method); + + dict_put(global->token2info, (void*)(ptroff_t)as3_tokencount, state->method); + + function_initvars(state->method, 1, params, 0, 1); + } + + if(as3_pass == 2) { + state->method = dict_lookup(global->token2info, (void*)(ptroff_t)as3_tokencount); + state->method->variable_count = 0; + parserassert(state->method); + + state->method->info->return_type = return_type; + function_initvars(state->method, 1, params, 0, 1); + } +} + +static void startfunction(modifiers_t*mod, enum yytokentype getset, char*name, params_t*params, classinfo_t*return_type) { - if(state->method) { + if(state->method && state->method->info) { syntaxerror("not able to start another method scope"); } new_state(); - global->variable_count = 0; - state->method = rfx_calloc(sizeof(methodstate_t)); - state->method->initcode = 0; - state->method->has_super = 0; - if(state->cls) { - state->method->is_constructor = !strcmp(state->cls->info->name,name); - state->cls->has_constructor |= state->method->is_constructor; - - new_variable((flags&FLAG_STATIC)?"class":"this", state->cls->info, 0); - } else { - state->method->is_global = 1; - state->method->late_binding = 1; // for global methods, always push local_0 on the scope stack + state->new_vars = 1; + + if(as3_pass == 1) { + state->method = methodstate_new(); + state->method->has_super = 0; + state->method->is_static = mod->flags&FLAG_STATIC; + + if(state->cls) { + state->method->is_constructor = !strcmp(state->cls->info->name,name); + } else { + state->method->is_global = 1; + state->method->late_binding = 1; // for global methods, always push local_0 on the scope stack + } + if(state->method->is_constructor) + name = "__as3_constructor__"; - new_variable("globalscope", 0, 0); + state->method->info = registerfunction(getset, mod, name, params, return_type, 0); + + function_initvars(state->method, 1, params, mod->flags, 1); + + dict_put(global->token2info, (void*)(ptroff_t)as3_tokencount, state->method); } - /* state->vars is initialized by state_new */ + if(as3_pass == 2) { + state->method = dict_lookup(global->token2info, (void*)(ptroff_t)as3_tokencount); + state->method->variable_count = 0; + parserassert(state->method); + + if(state->cls) { + memberinfo_t*m = registry_findmember(state->cls->info, mod->ns, name, 2, mod->flags&FLAG_STATIC); + check_override(m, mod->flags); + } + + if(state->cls) { + state->cls->has_constructor |= state->method->is_constructor; + } + + function_initvars(state->method, 1, params, mod->flags, 1); + } +} - param_list_t*p=0; - for(p=params->list;p;p=p->next) { - new_variable(p->param->name, p->param->type, 0); +static void insert_unresolved(methodstate_t*m, dict_t*xvars, dict_t*allvars) +{ + parserassert(m->inner); + if(m->unresolved_variables) { + dict_t*d = m->unresolved_variables; + int t; + DICT_ITERATE_KEY(d, char*, id) { + /* check parent method's variables */ + variable_t*v; + if(dict_contains(allvars, id)) { + m->uses_parent_function = 1; + state->method->uses_slots = 1; + dict_put(xvars, id, 0); + } + } + } + methodstate_list_t*ml = m->innerfunctions; + while(ml) { + insert_unresolved(ml->methodstate, xvars, allvars); + ml = ml->next; } - if(state->method->is_constructor) - name = "__as3_constructor__"; - state->method->info = registerfunction(getset, flags, name, params, return_type, 0); } -static void endfunction(token_t*ns, int flags, enum yytokentype getset, char*name, +static abc_method_t* endfunction(modifiers_t*mod, enum yytokentype getset, char*name, params_t*params, classinfo_t*return_type, code_t*body) { - abc_method_t*f = 0; - - multiname_t*type2 = sig2mname(return_type); - int slot = 0; - if(state->method->is_constructor) { - f = abc_class_getconstructor(state->cls->abc, type2); - } else if(!state->method->is_global) { - namespace_t mname_ns = {flags2access(flags), ""}; - multiname_t mname = {QNAME, &mname_ns, 0, name}; - - if(flags&FLAG_STATIC) - f = abc_class_staticmethod(state->cls->abc, type2, &mname); - else - f = abc_class_method(state->cls->abc, type2, &mname); - slot = f->trait->slot_id; - } else { - namespace_t mname_ns = {flags2access(flags), state->package}; - multiname_t mname = {QNAME, &mname_ns, 0, name}; - - f = abc_method_new(global->file, type2, 1); - trait_t*t = trait_new_method(&global->init->traits, multiname_clone(&mname), f); - //abc_code_t*c = global->init->method->body->code; - } - //flash doesn't seem to allow us to access function slots - //state->method->info->slot = slot; - - if(flags&FLAG_OVERRIDE) f->trait->attributes |= TRAIT_ATTR_OVERRIDE; - if(getset == KW_GET) f->trait->kind = TRAIT_GETTER; - if(getset == KW_SET) f->trait->kind = TRAIT_SETTER; - if(params->varargs) f->flags |= METHOD_NEED_REST; - - char opt=0; - param_list_t*p=0; - for(p=params->list;p;p=p->next) { - if(params->varargs && !p->next) { - break; //varargs: omit last parameter in function signature - } - multiname_t*m = sig2mname(p->param->type); - list_append(f->parameters, m); - if(p->param->value) { - check_constant_against_type(p->param->type, p->param->value); - opt=1;list_append(f->optional_parameters, p->param->value); - } else if(opt) { - syntaxerror("non-optional parameter not allowed after optional parameters"); - } - } - check_code_for_break(body); - - if(f->body) - f->body->code = body; - else //interface - if(body) - syntaxerror("interface methods can't have a method body"); - - free(state->method);state->method=0; - old_state(); -} + if(as3_pass==1) { + dict_t*xvars = dict_new(); + + if(state->method->unresolved_variables) { + DICT_ITERATE_KEY(state->method->unresolved_variables, char*, vname) { + if(!state->method->no_variable_scoping && dict_contains(state->method->allvars, vname)) { + variable_t*v = dict_lookup(state->method->allvars, vname); + if(!v->is_inner_method) { + state->method->no_variable_scoping = 1; + as3_warning("function %s uses forward or outer block variable references (%s): switching into compatibility mode", name, vname); + } + } + } + } + + methodstate_list_t*ml = state->method->innerfunctions; + while(ml) { + insert_unresolved(ml->methodstate, xvars, state->method->allvars); + ml = ml->next; + } + + if(state->method->uses_slots) { + state->method->slots = dict_new(); + int i = 1; + DICT_ITERATE_ITEMS(state->method->allvars, char*, name, variable_t*, v) { + if(!name) syntaxerror("internal error"); + if(v->index && dict_contains(xvars, name)) { + v->init = v->kill = 0; + v->index = i; + if(v->is_inner_method) { + v->is_inner_method->is_a_slot = i; + } + i++; + dict_put(state->method->slots, name, v); + } + } + state->method->uses_slots = i; + dict_destroy(state->vars);state->vars = 0; + parserassert(state->new_vars); + } + old_state(); + return 0; + } + + if(as3_pass==2) { + /*if(state->method->uses_parent_function){ + syntaxerror("accessing variables of parent function from inner functions not supported yet"); + }*/ + + abc_method_t*f = 0; + + multiname_t*type2 = sig2mname(return_type); + int slot = 0; + if(state->method->inner) { + f = state->method->abc; + abc_method_init(f, global->file, type2, 1); + } else if(state->method->is_constructor) { + f = abc_class_getconstructor(state->cls->abc, type2); + } else if(!state->method->is_global) { + namespace_t ns = modifiers2access(mod); + multiname_t mname = {QNAME, &ns, 0, name}; + if(mod->flags&FLAG_STATIC) + f = abc_class_staticmethod(state->cls->abc, type2, &mname); + else + f = abc_class_method(state->cls->abc, type2, &mname); + slot = f->trait->slot_id; + } else { + namespace_t mname_ns = {state->method->info->access, state->package}; + multiname_t mname = {QNAME, &mname_ns, 0, name}; + f = abc_method_new(global->file, type2, 1); + if(!global->init) global->init = abc_initscript(global->file); + trait_t*t = trait_new_method(&global->init->traits, multiname_clone(&mname), f); + //abc_code_t*c = global->init->method->body->code; + } + //flash doesn't seem to allow us to access function slots + //state->method->info->slot = slot; + + if(mod && mod->flags&FLAG_OVERRIDE) f->trait->attributes |= TRAIT_ATTR_OVERRIDE; + if(getset == KW_GET) f->trait->kind = TRAIT_GETTER; + if(getset == KW_SET) f->trait->kind = TRAIT_SETTER; + if(params->varargs) f->flags |= METHOD_NEED_REST; + if(state->method->need_arguments) f->flags |= METHOD_NEED_ARGUMENTS; + + char opt=0; + param_list_t*p=0; + for(p=params->list;p;p=p->next) { + if(params->varargs && !p->next) { + break; //varargs: omit last parameter in function signature + } + multiname_t*m = sig2mname(p->param->type); + list_append(f->parameters, m); + if(p->param->value) { + check_constant_against_type(p->param->type, p->param->value); + opt=1;list_append(f->optional_parameters, p->param->value); + } else if(opt) { + syntaxerror("function %s: non-optional parameter not allowed after optional parameters", name); + } + } + if(state->method->slots) { + DICT_ITERATE_ITEMS(state->method->slots, char*, name, variable_t*, v) { + if(v->index) { + multiname_t*mname = multiname_new(namespace_new(ACCESS_PACKAGE, ""), name); + multiname_t*type = sig2mname(v->type); + trait_t*t = trait_new_member(&f->body->traits, type, mname, 0); + t->slot_id = v->index; + } + } + } + check_code_for_break(body); -char is_subtype_of(classinfo_t*type, classinfo_t*supertype) -{ - return 1; // FIXME + /* Seems this works now. + if(state->method->exceptions && state->method->uses_slots) { + as3_warning("try/catch and activation not supported yet within the same method"); + }*/ + + if(f->body) { + f->body->code = body; + f->body->exceptions = state->method->exceptions; + } else { //interface + if(body) + syntaxerror("interface methods can't have a method body"); + } + + old_state(); + return f; + } + + return 0; } void breakjumpsto(code_t*c, char*name, code_t*jump) @@ -1013,16 +1649,6 @@ void continuejumpsto(code_t*c, char*name, code_t*jump) } } -classinfo_t*join_types(classinfo_t*type1, classinfo_t*type2, char op) -{ - if(!type1 || !type2) - return registry_getanytype(); - if(TYPE_IS_ANY(type1) || TYPE_IS_ANY(type2)) - return registry_getanytype(); - if(type1 == type2) - return type1; - return registry_getanytype(); -} code_t*converttype(code_t*c, classinfo_t*from, classinfo_t*to) { if(from==to) @@ -1040,15 +1666,35 @@ code_t*converttype(code_t*c, classinfo_t*from, classinfo_t*to) if((TYPE_IS_NUMBER(from) || TYPE_IS_UINT(from) || TYPE_IS_INT(from)) && (TYPE_IS_NUMBER(to) || TYPE_IS_UINT(to) || TYPE_IS_INT(to))) { // allow conversion between number types + if(TYPE_IS_UINT(to)) + return abc_convert_u(c); + else if(TYPE_IS_INT(to)) + return abc_convert_i(c); + else if(TYPE_IS_NUMBER(to)) + return abc_convert_d(c); return abc_coerce2(c, &m); } - //printf("%s.%s\n", from.package, from.name); - //printf("%s.%s\n", to.package, to.name); + + if(TYPE_IS_XMLLIST(to) && TYPE_IS_XML(from)) + return c; + + if(TYPE_IS_BOOLEAN(to)) + return abc_convert_b(c); + if(TYPE_IS_STRING(to)) + return abc_convert_s(c); + if(TYPE_IS_OBJECT(to)) + return abc_coerce2(c, &m); + if(TYPE_IS_OBJECT(from) && TYPE_IS_XMLLIST(to)) + return abc_coerce2(c, &m); + if(TYPE_IS_OBJECT(from) && TYPE_IS_ARRAY(to)) + return abc_coerce2(c, &m); classinfo_t*supertype = from; while(supertype) { if(supertype == to) { - // target type is one of from's superclasses + /* target type is one of from's superclasses. + (not sure we need this coerce - as far as the verifier + is concerned, object==object (i think) */ return abc_coerce2(c, &m); } int t=0; @@ -1065,23 +1711,26 @@ code_t*converttype(code_t*c, classinfo_t*from, classinfo_t*to) return c; if(TYPE_IS_CLASS(from) && TYPE_IS_CLASS(to)) return c; - syntaxerror("can't convert type %s to %s", from->name, to->name); -} + if(TYPE_IS_NULL(from) && !IS_NUMBER_OR_INT(to)) + return c; -code_t*defaultvalue(code_t*c, classinfo_t*type) + + as3_error("can't convert type %s%s%s to %s%s%s", + from->package, from->package[0]?".":"", from->name, + to->package, to->package[0]?".":"", to->name); + + return c; +} +code_t* coerce_to_type(code_t*c, classinfo_t*t) { - if(TYPE_IS_INT(type)) { - c = abc_pushbyte(c, 0); - } else if(TYPE_IS_UINT(type)) { - c = abc_pushuint(c, 0); - } else if(TYPE_IS_FLOAT(type)) { - c = abc_pushnan(c); - } else if(TYPE_IS_BOOLEAN(type)) { - c = abc_pushfalse(c); + if(!t) { + return abc_coerce_a(c); + } else if(TYPE_IS_STRING(t)) { + return abc_coerce_s(c); } else { - c = abc_pushnull(c); + MULTINAME(m, t); + return abc_coerce2(c, &m); } - return c; } char is_pushundefined(code_t*c) @@ -1089,24 +1738,50 @@ char is_pushundefined(code_t*c) return (c && !c->prev && !c->next && c->opcode == OPCODE_PUSHUNDEFINED); } -void parserassert(int b) +static const char* get_package_from_name(const char*name) +{ + /* try explicit imports */ + dictentry_t* e = dict_get_slot(state->imports, name); + while(e) { + if(!strcmp(e->key, name)) { + slotinfo_t*c = (slotinfo_t*)e->data; + if(c) return c->package; + } + e = e->next; + } + return 0; +} +static namespace_list_t*get_current_imports() { - if(!b) syntaxerror("internal error: assertion failed"); + namespace_list_t*searchlist = 0; + + list_append(searchlist, namespace_new_package(state->package)); + + import_list_t*l = state->wildcard_imports; + while(l) { + namespace_t*ns = namespace_new_package(l->import->package); + list_append(searchlist, ns); + l = l->next; + } + list_append(searchlist, namespace_new_package("")); + list_append(searchlist, namespace_new_package(internal_filename_package)); + return searchlist; } -static classinfo_t* find_class(char*name) +static slotinfo_t* find_class(const char*name) { - classinfo_t*c=0; + slotinfo_t*c=0; - c = registry_findclass(state->package, name); + c = registry_find(state->package, name); + if(c) return c; /* try explicit imports */ dictentry_t* e = dict_get_slot(state->imports, name); + if(c) return c; while(e) { - if(c) - break; if(!strcmp(e->key, name)) { - c = (classinfo_t*)e->data; + c = (slotinfo_t*)e->data; + if(c) return c; } e = e->next; } @@ -1114,172 +1789,208 @@ static classinfo_t* find_class(char*name) /* try package.* imports */ import_list_t*l = state->wildcard_imports; while(l) { - if(c) - break; //printf("does package %s contain a class %s?\n", l->import->package, name); - c = registry_findclass(l->import->package, name); + c = registry_find(l->import->package, name); + if(c) return c; l = l->next; } /* try global package */ - if(!c) { - c = registry_findclass("", name); + c = registry_find("", name); + if(c) return c; + + /* try local "filename" package */ + c = registry_find(internal_filename_package, name); + if(c) return c; + + return 0; +} +typedcode_t push_class(slotinfo_t*a) +{ + typedcode_t x; + x.c = 0; + x.t = 0; + if(a->access == ACCESS_PACKAGEINTERNAL && + strcmp(a->package, state->package) && + strcmp(a->package, internal_filename_package) + ) { + syntaxerror("Can't access internal %s %s in package '%s' from package '%s'", + infotypename(a), a->name, a->package, state->package); + } + + + if(a->kind != INFOTYPE_CLASS) { + MULTINAME(m, a); + x.c = abc_findpropstrict2(x.c, &m); + x.c = abc_getproperty2(x.c, &m); + if(a->kind == INFOTYPE_METHOD) { + methodinfo_t*f = (methodinfo_t*)a; + x.t = TYPE_FUNCTION(f); + } else { + varinfo_t*v = (varinfo_t*)a; + x.t = v->type; + } + return x; + } else { + if(state->cls && state->method == state->cls->static_init) { + /* we're in the static initializer. + record the fact that we're using this class here */ + parsedclass_add_dependency(state->cls->dependencies, (classinfo_t*)a); + } + classinfo_t*c = (classinfo_t*)a; + //if(c->slot) { + if(0) { //Error #1026: Slot 1 exceeds slotCount=0 of global + x.c = abc_getglobalscope(x.c); + x.c = abc_getslot(x.c, c->slot); + } else { + MULTINAME(m, c); + x.c = abc_getlex2(x.c, &m); + } + x.t = TYPE_CLASS(c); } - return c; + return x; } -static code_t* toreadwrite(code_t*in, code_t*middlepart, char justassign, char readbefore) + +char is_break_or_jump(code_t*c) { - /* converts this: + if(!c) + return 0; + if(c->opcode == OPCODE_JUMP || + c->opcode == OPCODE___BREAK__ || + c->opcode == OPCODE___CONTINUE__ || + c->opcode == OPCODE_THROW || + c->opcode == OPCODE_RETURNVOID || + c->opcode == OPCODE_RETURNVALUE) { + return 1; + } + return 0; +} - [prefix code] [read instruction] +#define IS_FINALLY_TARGET(op) \ + ((op) == OPCODE___CONTINUE__ || \ + (op) == OPCODE___BREAK__ || \ + (op) == OPCODE_RETURNVOID || \ + (op) == OPCODE_RETURNVALUE || \ + (op) == OPCODE___RETHROW__) - to this: +static code_t* insert_finally_lookup(code_t*c, code_t*finally, int tempvar) +{ +#define NEED_EXTRA_STACK_ARG + code_t*finally_label = abc_nop(0); + NEW(lookupswitch_t, l); + //_lookupswitch - [prefix code] ([dup]) [read instruction] [middlepart] [setvar] [write instruction] [getvar] - */ - - if(in && in->opcode == OPCODE_COERCE_A) { - in = code_cutlast(in); - } - if(in->next) - syntaxerror("internal error"); - - /* chop off read instruction */ - code_t*prefix = in; - code_t*r = in; - if(r->prev) { - prefix = r->prev;r->prev = 0; - prefix->next=0; - } else { - prefix = 0; + code_t*i = c; + int count=0; + while(i) { + code_t*prev = i->prev; + if(IS_FINALLY_TARGET(i->opcode)) { + code_t*p = prev; + char needvalue=0; + if(i->opcode == OPCODE___RETHROW__ || + i->opcode == OPCODE_RETURNVALUE) { + if(i->opcode == OPCODE___RETHROW__) + i->opcode = OPCODE_THROW; + needvalue=1; + p = abc_coerce_a(p); + p = abc_setlocal(p, tempvar); + } + p = abc_pushbyte(p, count++); + p = abc_jump(p, finally_label); + code_t*target = p = abc_label(p); +#ifdef NEED_EXTRA_STACK_ARG + p = abc_pop(p); +#endif + if(needvalue) { + p = abc_getlocal(p, tempvar); + } + + p->next = i;i->prev = p; + list_append(l->targets, target); + } + i = prev; } - char use_temp_var = readbefore; + code_t*j,*f; + c = abc_pushbyte(c, -1); + c = code_append(c, finally_label); + c = code_append(c, finally); - /* generate the write instruction, and maybe append a dup to the prefix code */ - code_t* write = abc_nop(0); - if(r->opcode == OPCODE_GETPROPERTY) { - write->opcode = OPCODE_SETPROPERTY; - multiname_t*m = (multiname_t*)r->data[0]; - write->data[0] = multiname_clone(m); - if(m->type == QNAME || m->type == MULTINAME) { - if(!justassign) { - prefix = abc_dup(prefix); // we need the object, too - } - use_temp_var = 1; - } else if(m->type == MULTINAMEL) { - if(!justassign) { - /* dupping two values on the stack requires 5 operations and one register- - couldn't adobe just have given us a dup2? */ - int temp = gettempvar(); - prefix = abc_setlocal(prefix, temp); - prefix = abc_dup(prefix); - prefix = abc_getlocal(prefix, temp); - prefix = abc_swap(prefix); - prefix = abc_getlocal(prefix, temp); - if(!use_temp_var); - prefix = abc_kill(prefix, temp); - } - use_temp_var = 1; - } else { - syntaxerror("illegal lvalue: can't assign a value to this expression (not a qname/multiname)"); - } - } else if(r->opcode == OPCODE_GETSLOT) { - write->opcode = OPCODE_SETSLOT; - write->data[0] = r->data[0]; - if(!justassign) { - prefix = abc_dup(prefix); // we need the object, too - } - use_temp_var = 1; - } else if(r->opcode == OPCODE_GETLOCAL) { - write->opcode = OPCODE_SETLOCAL; - write->data[0] = r->data[0]; - } else if(r->opcode == OPCODE_GETLOCAL_0) { - write->opcode = OPCODE_SETLOCAL_0; - } else if(r->opcode == OPCODE_GETLOCAL_1) { - write->opcode = OPCODE_SETLOCAL_1; - } else if(r->opcode == OPCODE_GETLOCAL_2) { - write->opcode = OPCODE_SETLOCAL_2; - } else if(r->opcode == OPCODE_GETLOCAL_3) { - write->opcode = OPCODE_SETLOCAL_3; - } else { - code_dump(r, 0, 0, "", stdout); - syntaxerror("illegal lvalue: can't assign a value to this expression"); - } - code_t* c = 0; - - int temp = -1; - if(!justassign) { - if(use_temp_var) { - /* with getproperty/getslot, we have to be extra careful not - to execute the read code twice, as it might have side-effects - (e.g. if the property is in fact a setter/getter combination) - - So read the value, modify it, and write it again, - using prefix only once and making sure (by using a temporary - register) that the return value is what we just wrote */ - temp = gettempvar(); - c = code_append(c, prefix); - c = code_append(c, r); - if(readbefore) { - c = abc_dup(c); - c = abc_setlocal(c, temp); - } - c = code_append(c, middlepart); - if(!readbefore) { - c = abc_dup(c); - c = abc_setlocal(c, temp); - } - c = code_append(c, write); - c = abc_getlocal(c, temp); - c = abc_kill(c, temp); - } else { - /* if we're allowed to execute the read code twice *and* - the middlepart doesn't modify the code, things are easier. - */ - code_t* r2 = code_dup(r); - //c = code_append(c, prefix); - parserassert(!prefix); - c = code_append(c, r); - c = code_append(c, middlepart); - c = code_append(c, write); - c = code_append(c, r2); +#ifdef NEED_EXTRA_STACK_ARG + c = abc_dup(c); +#endif + c = abc_lookupswitch(c, l); + c = l->def = abc_label(c); +#ifdef NEED_EXTRA_STACK_ARG + c = abc_pop(c); +#endif + + return c; +} + +static code_t* insert_finally_simple(code_t*c, code_t*finally, int tempvar) +{ + code_t*i = c; + while(i) { + code_t*prev = i->prev; + if(IS_FINALLY_TARGET(i->opcode)) { + if(i->opcode == OPCODE___RETHROW__) + i->opcode = OPCODE_THROW; + code_t*end = code_dup(finally); + code_t*start = code_start(end); + if(prev) prev->next = start; + start->prev = prev; + i->prev = end; + end->next = i; } - } else { - /* even smaller version: overwrite the value without reading - it out first */ - if(!use_temp_var) { - if(prefix) { - c = code_append(c, prefix); - c = abc_dup(c); - } - c = code_append(c, middlepart); - c = code_append(c, write); - c = code_append(c, r); - } else { - temp = gettempvar(); - if(prefix) { - c = code_append(c, prefix); - } - c = code_append(c, middlepart); - c = abc_dup(c); - c = abc_setlocal(c, temp); - c = code_append(c, write); - c = abc_getlocal(c, temp); - c = abc_kill(c, temp); + i = prev; + } + return code_append(c, finally); +} + +code_t* insert_finally(code_t*c, code_t*finally, int tempvar) +{ + if(!finally) + return c; + code_t*i = c; + char cantdup=0; + int num_insertion_points=0; + while(i) { + if(IS_FINALLY_TARGET(i->opcode)) + num_insertion_points++; + i = i->prev; + } + i = finally; + int code_size=0; + while(i) { + code_size++; + if(i->branch || i->opcode == OPCODE_LOOKUPSWITCH) { + cantdup=1; } + i = i->prev; } + int simple_version_cost = (1+num_insertion_points)*code_size; + int lookup_version_cost = 4*num_insertion_points + 5; - return c; + if(cantdup || simple_version_cost > lookup_version_cost) { + //printf("(use lookup) simple=%d > lookup=%d\n", simple_version_cost, lookup_version_cost); + return insert_finally_lookup(c, finally, tempvar); + } else { + //printf("(use simple) simple=%d < lookup=%d\n", simple_version_cost, lookup_version_cost); + return insert_finally_simple(c, finally, tempvar); + } } -#define IS_INT(a) (TYPE_IS_INT((a).t) || TYPE_IS_UINT((a).t)) -#define BOTH_INT(a,b) (IS_INT(a) && IS_INT(b)) +#define PASS1 }} if(as3_pass == 1) {{ +#define PASS1END }} if(as3_pass == 2) {{ +#define PASS2 }} if(as3_pass == 2) {{ +#define PASS12 }} if(as3_pass == 1 || as3_pass == 2) {{ +#define PASS12END }} if(as3_pass == 2) {{ +#define PASS_ALWAYS }} {{ %} - %% /* ------------ code blocks / statements ---------------- */ @@ -1296,6 +2007,8 @@ PROGRAM_CODE: PACKAGE_DECLARATION | FUNCTION_DECLARATION | SLOT_DECLARATION | PACKAGE_INITCODE + | CONDITIONAL_COMPILATION '{' MAYBE_PROGRAM_CODE_LIST '}' {PASS_ALWAYS as3_pass=$1;} + | ';' MAYBE_INPACKAGE_CODE_LIST: | INPACKAGE_CODE_LIST INPACKAGE_CODE_LIST: INPACKAGE_CODE @@ -1306,55 +2019,108 @@ INPACKAGE_CODE: INTERFACE_DECLARATION | FUNCTION_DECLARATION | SLOT_DECLARATION | PACKAGE_INITCODE + | CONDITIONAL_COMPILATION '{' MAYBE_INPACKAGE_CODE_LIST '}' {PASS_ALWAYS as3_pass=$1;} + | '[' EMBED_START E ']' {PASS_ALWAYS as3_pass=$2;PASS1 as3_warning("embed command ignored");} + | ';' MAYBECODE: CODE {$$=$1;} MAYBECODE: {$$=code_new();} -CODE: CODE CODEPIECE {$$=code_append($1,$2);} +CODE: CODE CODEPIECE { + $$=code_append($1,$2); +} CODE: CODEPIECE {$$=$1;} -// code which also may appear outside a method +// code which may appear outside of methods +CODE_STATEMENT: DEFAULT_NAMESPACE CODE_STATEMENT: IMPORT -CODE_STATEMENT: VOIDEXPRESSION CODE_STATEMENT: FOR CODE_STATEMENT: FOR_IN CODE_STATEMENT: WHILE CODE_STATEMENT: DO_WHILE CODE_STATEMENT: SWITCH CODE_STATEMENT: IF +CODE_STATEMENT: WITH +CODE_STATEMENT: TRY +CODE_STATEMENT: VOIDEXPRESSION +CODE_STATEMENT: USE_NAMESPACE +CODE_STATEMENT: NAMESPACE_DECLARATION +CODE_STATEMENT: '{' CODE '}' {$$=$2;} +CODE_STATEMENT: '{' '}' {$$=0;} -// code which may appear anywhere -CODEPIECE: ';' {$$=0;} -//CODEPIECE: PACKAGE_DECLARATION -//CODEPIECE: CLASS_DECLARATION -//CODEPIECE: FUNCTION_DECLARATION -//CODEPIECE: INTERFACE_DECLARATION -CODEPIECE: VARIABLE_DECLARATION +// code which may appear in methods (includes the above) +CODEPIECE: ';' {$$=0;} CODEPIECE: CODE_STATEMENT +CODEPIECE: VARIABLE_DECLARATION CODEPIECE: BREAK CODEPIECE: CONTINUE CODEPIECE: RETURN +CODEPIECE: THROW +CODEPIECE: CONDITIONAL_COMPILATION '{' CODE '}' { + PASS_ALWAYS + if(as3_pass) { + $$ = $3; + } else { + $$ = 0; + } + as3_pass=$1; +} -CODEPIECE: NAMESPACE_DECLARATION {/*TODO*/$$=0;} -CODEPIECE: USE_NAMESPACE {/*TODO*/$$=0;} - -CODEBLOCK : '{' CODE '}' {$$=$2;} -CODEBLOCK : '{' '}' {$$=0;} +//CODEBLOCK : '{' CODE '}' {$$=$2;} +//CODEBLOCK : '{' '}' {$$=0;} CODEBLOCK : CODEPIECE ';' {$$=$1;} CODEBLOCK : CODEPIECE %prec below_semicolon {$$=$1;} /* ------------ package init code ------------------- */ PACKAGE_INITCODE: CODE_STATEMENT { - if($1) warning("code ignored"); + if($1) { + if(!global->init) + global->init = abc_initscript(global->file); + code_t**cc = &global->init->method->body->code; + *cc = code_append(*cc, $1); + } +} + +/* ------------ embed code ------------- */ + +EMBED_START: %prec above_function { + PASS_ALWAYS + $$ = as3_pass; + as3_pass=0; +} + +/* ------------ conditional compilation ------------- */ + +CONDITIONAL_COMPILATION: T_IDENTIFIER "::" T_IDENTIFIER { + PASS12 + $$=as3_pass; + char*key = concat3($1,"::",$3); + if(!definitions || !dict_contains(definitions, key)) { + as3_pass=0; + } + free(key); } /* ------------ variables --------------------------- */ -MAYBEEXPRESSION : '=' NONCOMMAEXPRESSION {$$=$2;} - | {$$.c=abc_pushundefined(0); - $$.t=TYPE_ANY; - } +%code { + char is_subtype_of(classinfo_t*type, classinfo_t*supertype) + { + return 1; // FIXME + } + char do_init_variable(char*name) + { + if(!state->method->no_variable_scoping) + return 0; + if(!state->new_vars) + return 1; + return 1; + } +}; + +MAYBEEXPRESSION : '=' E {$$=$2;} + | {$$=mkdummynode();} VARIABLE_DECLARATION : "var" VARIABLE_LIST {$$=$2;} VARIABLE_DECLARATION : "const" VARIABLE_LIST {$$=$2;} @@ -1364,81 +2130,109 @@ VARIABLE_LIST: VARIABLE_LIST ',' ONE_VARIABLE {$$ = code_append($1, $3);} ONE_VARIABLE: T_IDENTIFIER MAYBETYPE MAYBEEXPRESSION { - if(variable_exists($1)) +PASS12 + if(variable_exists($1)) syntaxerror("Variable %s already defined", $1); +PASS1 + new_variable(state->method, $1, $2, 1, 0); +PASS2 - if(!is_subtype_of($3.t, $2)) { - syntaxerror("Can't convert %s to %s", $3.t->name, - $2->name); + char slot = 0; + int index = 0; + variable_t*v = 0; + if(state->method->uses_slots) { + v = find_slot(state->method, $1); + if(v && !v->init) { + // this variable is stored in a slot + v->init = 1; + v->type = $2; + slot = 1; + } + } + if(!v) { + v = new_variable2(state->method, $1, $2, 1, 0); } - int index = new_variable($1, $2, 1); + $$ = slot?abc_getscopeobject(0, 1):0; + typedcode_t val = node_read($3); + if(!is_subtype_of(val.t, $2)) { + syntaxerror("Can't convert %s to %s", val.t->name, $2->name); + } if($2) { - if($3.c->prev || $3.c->opcode != OPCODE_PUSHUNDEFINED) { - $$ = $3.c; - $$ = converttype($$, $3.t, $2); - $$ = abc_setlocal($$, index); + if(val.c->prev || val.c->opcode != OPCODE_PUSHUNDEFINED) { + $$ = code_append($$, val.c); + $$ = converttype($$, val.t, $2); } else { - $$ = defaultvalue(0, $2); - $$ = abc_setlocal($$, index); + code_free(val.c); + $$ = defaultvalue($$, $2); } } else { - if($3.c->prev || $3.c->opcode != OPCODE_PUSHUNDEFINED) { - $$ = $3.c; + if(val.c->prev || val.c->opcode != OPCODE_PUSHUNDEFINED) { + $$ = code_append($$, val.c); $$ = abc_coerce_a($$); - $$ = abc_setlocal($$, index); } else { - $$ = code_new(); + // don't do anything + code_free(val.c); + code_free($$); + $$ = 0; + break; } } - - /* that's the default for a local register, anyway - else { - state->method->initcode = abc_pushundefined(state->method->initcode); - state->method->initcode = abc_setlocal(state->method->initcode, index); - }*/ - //printf("variable %s -> %d (%s)\n", $2->text, index, $4.t?$4.t->name:""); + if(slot) { + $$ = abc_setslot($$, v->index); + } else { + $$ = abc_setlocal($$, v->index); + v->init = do_init_variable($1); + } } /* ------------ control flow ------------------------- */ +IF_CODEBLOCK: {PASS12 new_state();} CODEBLOCK { + $$ = var_block($2, state->vars); + PASS12 old_state(); +} MAYBEELSE: %prec below_else {$$ = code_new();} -MAYBEELSE: "else" CODEBLOCK {$$=$2;} +MAYBEELSE: "else" IF_CODEBLOCK {$$=$2;} //MAYBEELSE: ';' "else" CODEBLOCK {$$=$3;} -IF : "if" '(' {new_state();} EXPRESSION ')' CODEBLOCK MAYBEELSE { +IF : "if" '(' EXPRESSION ')' IF_CODEBLOCK MAYBEELSE { $$ = code_new(); - $$ = code_append($$, $4.c); + $$ = code_append($$, $3.c); code_t*myjmp,*myif = $$ = abc_iffalse($$, 0); - $$ = code_append($$, $6); - if($7) { + $$ = code_append($$, $5); + if($6) { myjmp = $$ = abc_jump($$, 0); } myif->branch = $$ = abc_nop($$); - if($7) { - $$ = code_append($$, $7); + if($6) { + $$ = code_append($$, $6); myjmp->branch = $$ = abc_nop($$); } - - $$ = killvars($$);old_state(); } FOR_INIT : {$$=code_new();} FOR_INIT : VARIABLE_DECLARATION FOR_INIT : VOIDEXPRESSION + +// TODO: why doesn't an %prec above_identifier resolve the r-r conflict here? +// (I don't see any easy way to revolve this conflict otherwise, as we +// can't touch VAR_READ without upsetting the precedence about "return") FOR_IN_INIT : "var" T_IDENTIFIER MAYBETYPE { - $$=$2;new_variable($2,$3,1); + PASS1 $$=$2;new_variable(state->method, $2,0,1,0); + PASS2 $$=$2;new_variable(state->method, $2,$3,1,0); } FOR_IN_INIT : T_IDENTIFIER { + PASS12 $$=$1; } -FOR_START : T_FOR '(' {new_state();$$.name=$1;$$.each=0;} -FOR_START : T_FOR "each" '(' {new_state();$$.name=$1;$$.each=1;} +FOR_START : T_FOR '(' {PASS12 new_state();$$.name=$1;$$.each=0;} +FOR_START : T_FOR "each" '(' {PASS12 new_state();$$.name=$1;$$.each=1;} -FOR : FOR_START FOR_INIT ';' EXPRESSION ';' VOIDEXPRESSION ')' CODEBLOCK { +FOR : FOR_START FOR_INIT ';' EXPRESSION ';' VOIDEXPRESSION ')' IF_CODEBLOCK { if($1.each) syntaxerror("invalid syntax: ; not allowed in for each statement"); $$ = code_new(); $$ = code_append($$, $2); @@ -1454,15 +2248,16 @@ FOR : FOR_START FOR_INIT ';' EXPRESSION ';' VOIDEXPRESSION ')' CODEBLOCK { continuejumpsto($$, $1.name, cont); myif->branch = out; - $$ = killvars($$);old_state(); + $$ = var_block($$, state->vars); + PASS12 old_state(); } -FOR_IN : FOR_START FOR_IN_INIT "in" EXPRESSION ')' CODEBLOCK { - variable_t*var = find_variable($2); - char*tmp1name = concat2($2, "__tmp1__"); - int it = new_variable(tmp1name, TYPE_INT, 0); - char*tmp2name = concat2($2, "__array__"); - int array = new_variable(tmp1name, 0, 0); +FOR_IN : FOR_START FOR_IN_INIT "in" EXPRESSION ')' IF_CODEBLOCK { + node_t*n = resolve_identifier($2); + typedcode_t w = node_write(n); + + int it = alloc_local(); + int array = alloc_local(); $$ = code_new(); $$ = code_append($$, $4.c); @@ -1481,8 +2276,9 @@ FOR_IN : FOR_START FOR_IN_INIT "in" EXPRESSION ')' CODEBLOCK { $$ = abc_nextname($$); else $$ = abc_nextvalue($$); - $$ = converttype($$, 0, var->type); - $$ = abc_setlocal($$, var->index); + + $$ = converttype($$, 0, w.t); + $$ = code_append($$, w.c); $$ = code_append($$, $6); $$ = abc_jump($$, loopstart); @@ -1491,45 +2287,41 @@ FOR_IN : FOR_START FOR_IN_INIT "in" EXPRESSION ')' CODEBLOCK { breakjumpsto($$, $1.name, out); continuejumpsto($$, $1.name, loopstart); - $$ = killvars($$); - myif->branch = out; - old_state(); - free(tmp1name); - free(tmp2name); + $$ = abc_kill($$, it); + $$ = abc_kill($$, array); + + $$ = var_block($$, state->vars); + PASS12 old_state(); } -WHILE : T_WHILE '(' {new_state();} EXPRESSION ')' CODEBLOCK { +WHILE : T_WHILE '(' EXPRESSION ')' IF_CODEBLOCK { + $$ = code_new(); code_t*myjmp = $$ = abc_jump($$, 0); code_t*loopstart = $$ = abc_label($$); - $$ = code_append($$, $6); + $$ = code_append($$, $5); code_t*cont = $$ = abc_nop($$); myjmp->branch = cont; - $$ = code_append($$, $4.c); + $$ = code_append($$, $3.c); $$ = abc_iftrue($$, loopstart); code_t*out = $$ = abc_nop($$); breakjumpsto($$, $1, out); continuejumpsto($$, $1, cont); - - $$ = killvars($$); - old_state(); } -DO_WHILE : T_DO {new_state();} CODEBLOCK "while" '(' EXPRESSION ')' { +DO_WHILE : T_DO IF_CODEBLOCK "while" '(' EXPRESSION ')' { $$ = code_new(); code_t*loopstart = $$ = abc_label($$); - $$ = code_append($$, $3); + $$ = code_append($$, $2); code_t*cont = $$ = abc_nop($$); - $$ = code_append($$, $6.c); + $$ = code_append($$, $5.c); $$ = abc_iftrue($$, loopstart); code_t*out = $$ = abc_nop($$); breakjumpsto($$, $1, out); continuejumpsto($$, $1, cont); - $$ = killvars($$); - old_state(); } BREAK : "break" %prec prec_none { @@ -1549,12 +2341,12 @@ MAYBE_CASE_LIST : {$$=0;} MAYBE_CASE_LIST : CASE_LIST {$$=$1;} MAYBE_CASE_LIST : DEFAULT {$$=$1;} MAYBE_CASE_LIST : CASE_LIST DEFAULT {$$=code_append($1,$2);} -CASE_LIST: CASE {$$=$1} +CASE_LIST: CASE {$$=$1;} CASE_LIST: CASE_LIST CASE {$$=code_append($$,$2);} CASE: "case" E ':' MAYBECODE { - $$ = abc_dup(0); - $$ = code_append($$, $2.c); + $$ = abc_getlocal(0, state->switch_var); + $$ = code_append($$, node_read($2).c); code_t*j = $$ = abc_ifne($$, 0); $$ = code_append($$, $4); if($$->opcode != OPCODE___BREAK__) { @@ -1566,10 +2358,12 @@ CASE: "case" E ':' MAYBECODE { DEFAULT: "default" ':' MAYBECODE { $$ = $3; } -SWITCH : T_SWITCH '(' {new_state();} E ')' '{' MAYBE_CASE_LIST '}' { - $$=$4.c; +SWITCH : T_SWITCH '(' {PASS12 new_state();state->switch_var=alloc_local();} E ')' '{' MAYBE_CASE_LIST '}' { + $$ = node_read($4).c; + $$ = abc_setlocal($$, state->switch_var); $$ = code_append($$, $7); - code_t*out = $$ = abc_pop($$); + + code_t*out = $$ = abc_kill($$, state->switch_var); breakjumpsto($$, $1, out); code_t*c = $$,*lastblock=0; @@ -1588,73 +2382,281 @@ SWITCH : T_SWITCH '(' {new_state();} E ')' '{' MAYBE_CASE_LIST '}' { } c=c->prev; } - old_state(); + + $$ = var_block($$, state->vars); + PASS12 old_state(); } -/* ------------ packages and imports ---------------- */ +/* ------------ try / catch /finally ---------------- */ -X_IDENTIFIER: T_IDENTIFIER - | "package" {$$="package";} +CATCH: "catch" '(' T_IDENTIFIER MAYBETYPE ')' {PASS12 new_state(); + state->exception_name=$3; + PASS1 new_variable(state->method, $3, $4, 0, 0); + PASS2 new_variable(state->method, $3, $4, 0, 0); + } + '{' MAYBECODE '}' { + namespace_t name_ns = {ACCESS_PACKAGE, ""}; + multiname_t name = {QNAME, &name_ns, 0, $3}; + + NEW(abc_exception_t, e) + e->exc_type = sig2mname($4); + e->var_name = multiname_clone(&name); + $$ = e; -PACKAGE: PACKAGE '.' X_IDENTIFIER {$$ = concat3($1,".",$3);free($1);$1=0;} -PACKAGE: X_IDENTIFIER {$$=strdup($1);} + code_t*c = 0; + int i = find_variable_safe(state, $3)->index; + e->target = c = abc_nop(0); + c = abc_setlocal(c, i); + c = code_append(c, code_dup(state->method->scope_code)); + c = code_append(c, $8); + c = abc_kill(c, i); + + c = var_block(c, state->vars); + PASS12 old_state(); +} +FINALLY: "finally" '{' {PASS12 new_state();state->exception_name=0;} MAYBECODE '}' { + $4 = var_block($4, state->vars); + if(!$4) { + $$=0; + } else { + NEW(abc_exception_t, e) + e->exc_type = 0; //all exceptions + e->var_name = 0; //no name + e->target = 0; + e->to = abc_nop(0); + e->to = code_append(e->to, $4); + $$ = e; + } + PASS12 old_state(); +} -PACKAGE_DECLARATION : "package" PACKAGE '{' {startpackage($2);free($2);$2=0;} MAYBE_INPACKAGE_CODE_LIST '}' {endpackage();$$=0;} -PACKAGE_DECLARATION : "package" '{' {startpackage("")} MAYBE_INPACKAGE_CODE_LIST '}' {endpackage();$$=0;} +CATCH_LIST: CATCH {$$.l=list_new();$$.finally=0;list_append($$.l,$1);} +CATCH_LIST: CATCH_LIST CATCH {$$=$1;list_append($$.l,$2);} +CATCH_FINALLY_LIST: CATCH_LIST {$$=$1;} +CATCH_FINALLY_LIST: CATCH_LIST FINALLY { + $$ = $1; + $$.finally = 0; + if($2) { + list_append($$.l,$2); + $$.finally = $2->to;$2->to=0; + } +} +CATCH_FINALLY_LIST: FINALLY { + $$.l=list_new(); + $$.finally = 0; + if($1) { + list_append($$.l,$1); + $$.finally = $1->to;$1->to=0; + } +} -IMPORT : "import" QNAME { - classinfo_t*c = $2; - if(!c) - syntaxerror("Couldn't import class\n"); +TRY : "try" '{' {PASS12 new_state(); + state->method->has_exceptions=1; + state->method->late_binding=1;//for invariant scope_code + } MAYBECODE '}' CATCH_FINALLY_LIST { + code_t*out = abc_nop(0); + + code_t*start = abc_nop(0); + $$ = code_append(start, $4); + if(!is_break_or_jump($4)) { + $$ = abc_jump($$, out); + } + code_t*end = $$ = abc_nop($$); + + int tmp; + if($6.finally) + tmp = alloc_local(); + + abc_exception_list_t*l = $6.l; + int count=0; + while(l) { + abc_exception_t*e = l->abc_exception; + if(e->var_name) { + $$ = code_append($$, e->target); + $$ = abc_jump($$, out); + } else { + parserassert((ptroff_t)$6.finally); + // finally block + e->target = $$ = abc_nop($$); + $$ = code_append($$, code_dup(state->method->scope_code)); + $$ = abc___rethrow__($$); + } + + e->from = start; + e->to = end; + + l = l->next; + } + $$ = code_append($$, out); + + $$ = insert_finally($$, $6.finally, tmp); + + list_concat(state->method->exceptions, $6.l); + + $$ = var_block($$, state->vars); + PASS12 old_state(); +} + +/* ------------ throw ------------------------------- */ + +THROW : "throw" EXPRESSION { + $$=$2.c; + $$=abc_throw($$); +} +THROW : "throw" %prec prec_none { + if(!state->exception_name) + syntaxerror("re-throw only possible within a catch block"); + variable_t*v = find_variable(state, state->exception_name); + $$=code_new(); + $$=abc_getlocal($$, v->index); + $$=abc_throw($$); +} + +/* ------------ with -------------------------------- */ + +WITH_HEAD : "with" '(' EXPRESSION ')' { + new_state(); + if(state->method->has_exceptions) { + int v = alloc_local(); + state->method->scope_code = abc_getlocal(state->method->scope_code, v); + state->method->scope_code = abc_pushwith(state->method->scope_code); + $$.number = v; + } + $$.cc = $3.c; +} +WITH : WITH_HEAD CODEBLOCK { + /* remove getlocal;pushwith from scope code again */ + state->method->scope_code = code_cutlast(code_cutlast(state->method->scope_code)); + + $$ = $1.cc; + if(state->method->has_exceptions) { + $$ = abc_dup($$); + $$ = abc_setlocal($$, $1.number); + } + $$ = abc_pushwith($$); + $$ = code_append($$, $2); + $$ = abc_popscope($$); + old_state(); +} + +/* ------------ packages and imports ---------------- */ + +X_IDENTIFIER: T_IDENTIFIER + | "package" {PASS12 $$="package";} + | "namespace" {PASS12 $$="namespace";} + | "NaN" {PASS12 $$="NaN";} + +PACKAGE: PACKAGE '.' X_IDENTIFIER {PASS12 $$ = concat3($1,".",$3);free($1);$1=0;} +PACKAGE: X_IDENTIFIER {PASS12 $$=strdup($1);} + +PACKAGE_DECLARATION : "package" PACKAGE '{' {PASS12 startpackage($2);free($2);$2=0;} + MAYBE_INPACKAGE_CODE_LIST '}' {PASS12 endpackage();$$=0;} +PACKAGE_DECLARATION : "package" '{' {PASS12 startpackage("");} + MAYBE_INPACKAGE_CODE_LIST '}' {PASS12 endpackage();$$=0;} + +%code { + static void state_has_imports() + { + state->wildcard_imports = list_clone(state->wildcard_imports); + state->imports = dict_clone(state->imports); + state->has_own_imports = 1; + } + static void import_toplevel(const char*package) + { + char* s = strdup(package); + while(1) { + dict_put(state->import_toplevel_packages, s, 0); + char*x = strrchr(s, '.'); + if(!x) + break; + *x = 0; + } + free(s); + } +}; + +IMPORT : "import" T_IDENTIFIER { + PASS12 + slotinfo_t*s = registry_find(state->package, $2); + if(!s && as3_pass==1) {as3_schedule_class(state->package, $2);} + state_has_imports(); + dict_put(state->imports, state->package, $2); + $$=0; +} +IMPORT : "import" PACKAGEANDCLASS { + PASS12 + slotinfo_t*s = registry_find($2->package, $2->name); + if(!s && as3_pass==1) { + as3_schedule_class($2->package, $2->name); + } + /*if(s && s->kind == INFOTYPE_VAR && TYPE_IS_NAMESPACE(s->type)) { + trie_put(active_namespaces, (unsigned char*)$2->name, 0); + }*/ state_has_imports(); - dict_put(state->imports, c->name, c); + dict_put(state->imports, $2->name, $2); + import_toplevel($2->package); $$=0; } IMPORT : "import" PACKAGE '.' '*' { + PASS12 + if(strncmp("flash.", $2, 6) && as3_pass==1) { + as3_schedule_package($2); + } + NEW(import_t,i); i->package = $2; state_has_imports(); list_append(state->wildcard_imports, i); + import_toplevel(i->package); $$=0; } /* ------------ classes and interfaces (header) -------------- */ -MAYBE_MODIFIERS : {$$=0;} -MAYBE_MODIFIERS : MODIFIER_LIST {$$=$1} -MODIFIER_LIST : MODIFIER {$$=$1;} -MODIFIER_LIST : MODIFIER_LIST MODIFIER {$$=$1|$2;} - -MODIFIER : KW_PUBLIC {$$=FLAG_PUBLIC;} - | KW_PRIVATE {$$=FLAG_PRIVATE;} - | KW_PROTECTED {$$=FLAG_PROTECTED;} - | KW_STATIC {$$=FLAG_STATIC;} - | KW_DYNAMIC {$$=FLAG_DYNAMIC;} - | KW_FINAL {$$=FLAG_FINAL;} - | KW_OVERRIDE {$$=FLAG_OVERRIDE;} - | KW_NATIVE {$$=FLAG_NATIVE;} - | KW_INTERNAL {$$=FLAG_INTERNAL;} - -EXTENDS : {$$=registry_getobjectclass();} -EXTENDS : KW_EXTENDS QNAME {$$=$2;} - -EXTENDS_LIST : {$$=list_new();} -EXTENDS_LIST : KW_EXTENDS QNAME_LIST {$$=$2;} - -IMPLEMENTS_LIST : {$$=list_new();} -IMPLEMENTS_LIST : KW_IMPLEMENTS QNAME_LIST {$$=$2;} +MAYBE_MODIFIERS : %prec above_function {PASS12 $$.flags=0;$$.ns=0;} +MAYBE_MODIFIERS : MODIFIER_LIST {PASS12 $$=$1;} +MODIFIER_LIST : MODIFIER {PASS12 $$=$1;} +MODIFIER_LIST : MODIFIER_LIST MODIFIER { + PASS12 + $$.flags=$1.flags|$2.flags; + if($1.ns && $2.ns) syntaxerror("only one namespace allowed in one declaration"); + $$.ns=$1.ns?$1.ns:$2.ns; + +} +MODIFIER : KW_PUBLIC {PASS12 $$.flags=FLAG_PUBLIC;$$.ns=0;} + | KW_PRIVATE {PASS12 $$.flags=FLAG_PRIVATE;$$.ns=0;} + | KW_PROTECTED {PASS12 $$.flags=FLAG_PROTECTED;$$.ns=0;} + | KW_STATIC {PASS12 $$.flags=FLAG_STATIC;$$.ns=0;} + | KW_DYNAMIC {PASS12 $$.flags=FLAG_DYNAMIC;$$.ns=0;} + | KW_FINAL {PASS12 $$.flags=FLAG_FINAL;$$.ns=0;} + | KW_OVERRIDE {PASS12 $$.flags=FLAG_OVERRIDE;$$.ns=0;} + | KW_NATIVE {PASS12 $$.flags=FLAG_NATIVE;$$.ns=0;} + | KW_INTERNAL {PASS12 $$.flags=FLAG_PACKAGEINTERNAL;$$.ns=0;} + | T_IDENTIFIER {PASS12 $$.flags=FLAG_NAMESPACE; + $$.ns=$1; + } + +EXTENDS : {PASS12 $$=0;} +EXTENDS : KW_EXTENDS CLASS_SPEC {PASS12 $$=$2;} + +EXTENDS_LIST : {PASS12 $$=list_new();} +EXTENDS_LIST : KW_EXTENDS CLASS_SPEC_LIST {PASS12 $$=$2;} + +IMPLEMENTS_LIST : {PASS12 $$=list_new();} +IMPLEMENTS_LIST : KW_IMPLEMENTS CLASS_SPEC_LIST {PASS12 $$=$2;} CLASS_DECLARATION : MAYBE_MODIFIERS "class" T_IDENTIFIER EXTENDS IMPLEMENTS_LIST - '{' {startclass($1,$3,$4,$5, 0);} + '{' {PASS12 startclass(&$1,$3,$4,$5);} MAYBE_CLASS_BODY - '}' {endclass();$$=0;} + '}' {PASS12 endclass();$$=0;} INTERFACE_DECLARATION : MAYBE_MODIFIERS "interface" T_IDENTIFIER EXTENDS_LIST - '{' {startclass($1,$3,0,$4,1);} + '{' {PASS12 $1.flags|=FLAG_INTERFACE; + startclass(&$1,$3,0,$4);} MAYBE_INTERFACE_BODY - '}' {endclass();$$=0;} + '}' {PASS12 endclass();$$=0;} /* ------------ classes and interfaces (body) -------------- */ @@ -1663,13 +2665,15 @@ MAYBE_CLASS_BODY : CLASS_BODY CLASS_BODY : CLASS_BODY_ITEM CLASS_BODY : CLASS_BODY CLASS_BODY_ITEM CLASS_BODY_ITEM : ';' +CLASS_BODY_ITEM : CONDITIONAL_COMPILATION '{' MAYBE_CLASS_BODY '}' {PASS_ALWAYS as3_pass=$1;} CLASS_BODY_ITEM : SLOT_DECLARATION CLASS_BODY_ITEM : FUNCTION_DECLARATION +CLASS_BODY_ITEM : '[' EMBED_START E ']' {PASS_ALWAYS as3_pass=$2;PASS1 as3_warning("embed command ignored");} CLASS_BODY_ITEM : CODE_STATEMENT { - code_t*c = state->cls->static_init; + code_t*c = state->cls->static_init->header; c = code_append(c, $1); - state->cls->static_init = c; + state->cls->static_init->header = c; } MAYBE_INTERFACE_BODY : @@ -1681,58 +2685,162 @@ IDECLARATION : "var" T_IDENTIFIER { syntaxerror("variable declarations not allowed in interfaces"); } IDECLARATION : MAYBE_MODIFIERS "function" GETSET T_IDENTIFIER '(' MAYBE_PARAM_LIST ')' MAYBETYPE { - $1 |= FLAG_PUBLIC; - if($1&(FLAG_PRIVATE|FLAG_INTERNAL|FLAG_PROTECTED)) { + PASS12 + $1.flags |= FLAG_PUBLIC; + if($1.flags&(FLAG_PRIVATE|FLAG_PACKAGEINTERNAL|FLAG_PROTECTED)) { syntaxerror("invalid method modifiers: interface methods always need to be public"); } - startfunction(0,$1,$3,$4,&$6,$8); - endfunction(0,$1,$3,$4,&$6,$8, 0); + startfunction(&$1,$3,$4,&$6,$8); + endfunction(&$1,$3,$4,&$6,$8, 0); + list_deep_free($6.list); } /* ------------ classes and interfaces (body, slots ) ------- */ +%code { + static int slotstate_varconst = 0; + static modifiers_t*slotstate_flags = 0; + static void setslotstate(modifiers_t* flags, int varconst) + { + slotstate_varconst = varconst; + slotstate_flags = flags; + if(state->cls) { + if(flags) { + if(flags->flags&FLAG_STATIC) { + state->method = state->cls->static_init; + } else { + state->method = state->cls->init; + } + } else { + // reset to "default" state (all in class code is static by default) */ + state->method = state->cls->static_init; + } + } else { + parserassert(state->method); + } + } + static trait_t* add_abc_slot(modifiers_t* modifiers, const char*name, multiname_t*m, code_t***c) + { + int flags = modifiers->flags; + namespace_t ns = modifiers2access(modifiers); + + /* slot name */ + multiname_t mname = {QNAME, &ns, 0, name}; + + trait_list_t**traits; + code_t**code=0; + if(!state->cls) { + // global variable + if(!global->init) global->init = abc_initscript(global->file); + ns.name = state->package; + traits = &global->init->traits; + code = &global->init->method->body->code; + } else if(flags&FLAG_STATIC) { + // static variable + traits = &state->cls->abc->static_traits; + code = &state->cls->static_init->header; + } else { + // instance variable + traits = &state->cls->abc->traits; + code = &state->cls->init->header; + + if(ns.access == ACCESS_PROTECTED) { + ns.name = concat3(state->cls->info->package,":",state->cls->info->name); + } + } + if(c) + *c = code; + if(m) + *m = *multiname_clone(&mname); + + return trait_new_member(traits, 0, multiname_clone(&mname), 0); + } +}; + VARCONST: "var" | "const" -SLOT_DECLARATION: MAYBE_MODIFIERS VARCONST T_IDENTIFIER MAYBETYPE MAYBEEXPRESSION { - int flags = $1; - memberinfo_t* info = memberinfo_register(state->cls->info, $3, MEMBER_SLOT); - info->type = $4; - info->flags = flags; - trait_t*t=0; +SLOT_DECLARATION: MAYBE_MODIFIERS VARCONST {PASS12 setslotstate(&$1,$2);} SLOT_LIST {PASS12 $$=$4;setslotstate(0, 0);} + +SLOT_LIST: ONE_SLOT {PASS12 $$=0;} +SLOT_LIST: SLOT_LIST ',' ONE_SLOT {PASS12 $$=0;} + +ONE_SLOT: T_IDENTIFIER MAYBETYPE MAYBEEXPRESSION +{ +PASS12 + int flags = slotstate_flags->flags; + namespace_t ns = modifiers2access(slotstate_flags); - namespace_t mname_ns = {flags2access(flags), ""}; - multiname_t mname = {QNAME, &mname_ns, 0, $3}; + if(as3_pass == 1) { - if(!(flags&FLAG_STATIC)) { - if($4) { - MULTINAME(m, $4); - t=abc_class_slot(state->cls->abc, &mname, &m); + varinfo_t* info = 0; + if(state->cls) { + memberinfo_t*i = registry_findmember(state->cls->info, ns.name, $1, 1, slotstate_flags->flags&FLAG_STATIC); + if(i) { + check_override(i, flags); + } + info = varinfo_register_onclass(state->cls->info, ns.access, ns.name, $1, slotstate_flags->flags&FLAG_STATIC); } else { - t=abc_class_slot(state->cls->abc, &mname, 0); + slotinfo_t*i = registry_find(state->package, $1); + if(i) { + syntaxerror("package %s already contains '%s'", state->package, $1); + } + if(ns.name && ns.name[0]) { + syntaxerror("namespaces not allowed on package-level variables"); + } + info = varinfo_register_global(ns.access, state->package, $1); + } + + info->type = $2; + info->flags = flags; + + dict_put(global->token2info, (void*)(ptroff_t)as3_tokencount, info); + } + + if(as3_pass == 2) { + varinfo_t*info = dict_lookup(global->token2info, (void*)(ptroff_t)as3_tokencount); + + multiname_t mname; + code_t**code; + trait_t*t = add_abc_slot(slotstate_flags, $1, &mname, &code); + + if($2) { + MULTINAME(m, $2); + t->type_name = multiname_clone(&m); } info->slot = t->slot_id; - } else { - if($4) { - MULTINAME(m, $4); - t=abc_class_staticslot(state->cls->abc, &mname, &m); + + /* workaround for "VerifyError: Error #1053: Illegal override of ::test2 in C1" + FIXME: is there a way to use slots and still don't have conflicting overrides? + */ + info->slot = t->slot_id = 0; + + constant_t cval = $3->type->eval($3); + if(cval.type!=CONSTANT_UNKNOWN) { + /* compile time constant */ + t->value = malloc(sizeof(constant_t)); + memcpy(t->value, &cval, sizeof(constant_t)); + info->value = constant_clone(t->value); } else { - t=abc_class_staticslot(state->cls->abc, &mname, 0); + typedcode_t v = node_read($3); + /* initalization code (if needed) */ + code_t*c = 0; + if(v.c && !is_pushundefined(v.c)) { + c = abc_getlocal_0(c); + c = code_append(c, v.c); + c = converttype(c, v.t, $2); + if(!t->slot_id) { + c = abc_initproperty2(c, &mname); + } else { + c = abc_setslot(c, t->slot_id); + } + } + *code = code_append(*code, c); + } + + if(slotstate_varconst==KW_CONST) { + t->kind= TRAIT_CONST; + info->flags |= FLAG_CONST; } - info->slot = t->slot_id; - } - if($5.c && !is_pushundefined($5.c)) { - code_t*c = 0; - c = abc_getlocal_0(c); - c = code_append(c, $5.c); - c = converttype(c, $5.t, $4); - c = abc_setslot(c, t->slot_id); - if(!(flags&FLAG_STATIC)) - state->cls->init = code_append(state->cls->init, c); - else - state->cls->static_init = code_append(state->cls->static_init, c); - } - if($2==KW_CONST) { - t->kind= TRAIT_CONST; } $$=0; @@ -1740,36 +2848,149 @@ SLOT_DECLARATION: MAYBE_MODIFIERS VARCONST T_IDENTIFIER MAYBETYPE MAYBEEXPRESSIO /* ------------ constants -------------------------------------- */ -MAYBESTATICCONSTANT: {$$=0;} -MAYBESTATICCONSTANT: '=' STATICCONSTANT {$$=$2;} +MAYBECONSTANT: {$$=0;} +MAYBECONSTANT: '=' E { + $$ = malloc(sizeof(constant_t)); + *$$ = node_eval($2); + if($$->type == CONSTANT_UNKNOWN) { + syntaxerror("can't evaluate default parameter value (needs to be a compile-time constant)"); + } +} + +CONSTANT : T_INT {$$ = constant_new_int($1);} +CONSTANT : T_UINT { + $$ = constant_new_uint($1); +} +CONSTANT : T_FLOAT {$$ = constant_new_float($1);} +CONSTANT : T_STRING {$$ = constant_new_string2($1.str,$1.len);free((char*)$1.str);} +CONSTANT : "true" {$$ = constant_new_true($1);} +CONSTANT : "false" {$$ = constant_new_false($1);} +CONSTANT : "null" {$$ = constant_new_null($1);} +CONSTANT : "undefined" {$$ = constant_new_undefined($1);} +CONSTANT : KW_NAN {$$ = constant_new_float(__builtin_nan(""));} + +/* ---------------------------xml ------------------------------ */ + +%code { + static int xml_level = 0; +}; + +XML: XMLNODE { + multiname_t m = {QNAME, &stdns, 0, "XML"}; + typedcode_t v; + v.c = 0; + v.c = abc_getlex2(v.c, &m); + v.c = code_append(v.c, node_read($1).c); + v.c = abc_construct(v.c, 1); + v.t = TYPE_XML; + $$ = mkcodenode(v); +} + +OPEN : '<' {PASS_ALWAYS if(!xml_level++) tokenizer_begin_xml();} +CLOSE : '>' {PASS_ALWAYS tokenizer_begin_xmltext();} +CLOSE2 : {PASS_ALWAYS if(!--xml_level) tokenizer_end_xml(); else tokenizer_begin_xmltext();} + +XMLEXPR1 : '{' E {PASS_ALWAYS tokenizer_begin_xmltext();} '}' { + $$ = $2; +} +XMLEXPR2 : '{' E {PASS_ALWAYS tokenizer_begin_xml();} '}' { + $$ = $2; +} +XMLTEXT : {$$=mkstringnode("");} +XMLTEXT : XMLTEXT XMLEXPR1 { + $$ = mkaddnode($1,$2); +} +XMLTEXT : XMLTEXT T_STRING { + char* str = string_cstr(&$2); + $$ = mkaddnode($1,mkstringnode(str)); + free(str); +} +XMLTEXT : XMLTEXT '>' { + $$ = mkaddnode($1, mkstringnode(">")); +} +XML2 : XMLNODE XMLTEXT { + $$ = mkaddnode($1,$2); +} +XML2 : XML2 XMLNODE XMLTEXT { + $$ = mkaddnode($1, mkaddnode($2,$3)); +} +XML_ID_OR_EXPR: T_IDENTIFIER { + $$ = mkstringnode($1); +} +XML_ID_OR_EXPR: XMLEXPR2 { + $$ = $1; +} + +MAYBE_XMLATTRIBUTES: { + $$ = mkstringnode(""); +} +MAYBE_XMLATTRIBUTES: XMLATTRIBUTES { + $$ = mkaddnode(mkstringnode(" "),$1); +} + +XMLNODE : OPEN XML_ID_OR_EXPR MAYBE_XMLATTRIBUTES '/' CLOSE2 '>' { + //$$ = allocprintf("<%s%s/>", $2, $3, $5, $8); + $$ = mkaddnode(mkaddnode(mkaddnode(mkstringnode("<"),$2),$3),mkstringnode("/>")); +} +XMLNODE : OPEN XML_ID_OR_EXPR MAYBE_XMLATTRIBUTES CLOSE XMLTEXT '<' '/' XML_ID_OR_EXPR CLOSE2 '>' { + //$$ = allocprintf("<%s%s>%s", $2, $3, $5, $8); + $$ = mkaddnode(mkaddnode(mkaddnode(mkaddnode(mkaddnode(mkaddnode(mkaddnode( + mkstringnode("<"),$2),$3),mkstringnode(">")),$5),mkstringnode("")); +} +XMLNODE : OPEN XML_ID_OR_EXPR MAYBE_XMLATTRIBUTES CLOSE XMLTEXT XML2 '<' '/' XML_ID_OR_EXPR CLOSE2 '>' { + //$$ = allocprintf("<%s%s>%s%s", $2, $3, $5, $6, $9); + $$ = mkaddnode(mkaddnode(mkaddnode(mkaddnode(mkaddnode(mkaddnode(mkaddnode(mkaddnode( + mkstringnode("<"),$2),$3),mkstringnode(">")),$5),$6),mkstringnode("")); +} -STATICCONSTANT : T_BYTE {$$ = constant_new_int($1);} -STATICCONSTANT : T_INT {$$ = constant_new_int($1);} -STATICCONSTANT : T_UINT {$$ = constant_new_uint($1);} -STATICCONSTANT : T_FLOAT {$$ = constant_new_float($1);} -STATICCONSTANT : T_STRING {$$ = constant_new_string2($1.str,$1.len);} -//STATICCONSTANT : T_NAMESPACE {$$ = constant_new_namespace($1);} -STATICCONSTANT : "true" {$$ = constant_new_true($1);} -STATICCONSTANT : "false" {$$ = constant_new_false($1);} -STATICCONSTANT : "null" {$$ = constant_new_null($1);} +XMLATTRIBUTES: XMLATTRIBUTE { + $$ = $1; +} +XMLATTRIBUTES: XMLATTRIBUTES XMLATTRIBUTE { + $$ = mkaddnode($1, mkaddnode(mkstringnode(" "),$2)); +} +XMLATTRIBUTE: XMLEXPR2 { + $$ = $1; +} +XMLATTRIBUTE: XMLEXPR2 '=' T_STRING { + char* str = string_cstr(&$3); + $$ = mkaddnode($1, mkstringnode(concat2("=",str))); + free(str); +} +XMLATTRIBUTE: XMLEXPR2 '=' XMLEXPR2 { + $$ = mkaddnode($1, mkaddnode(mkstringnode("=\""), mkaddnode($3, mkstringnode("\"")))); +} +XMLATTRIBUTE: T_IDENTIFIER '=' XMLEXPR2 { + $$ = mkaddnode(mkaddnode(mkstringnode(concat2($1,"=\"")), $3), mkstringnode("\"")); +} +XMLATTRIBUTE: T_IDENTIFIER '=' T_STRING { + char* str = string_cstr(&$3); + $$=mkstringnode(allocprintf("%s=%s", $1,str)); + free(str); + free($1);free((char*)$3.str); +} /* ------------ classes and interfaces (body, functions) ------- */ // non-vararg version MAYBE_PARAM_LIST: { + PASS12 memset(&$$,0,sizeof($$)); } MAYBE_PARAM_LIST: PARAM_LIST { + PASS12 $$=$1; } // vararg version MAYBE_PARAM_LIST: "..." PARAM { + PASS12 memset(&$$,0,sizeof($$)); $$.varargs=1; list_append($$.list, $2); } MAYBE_PARAM_LIST: PARAM_LIST ',' "..." PARAM { + PASS12 $$ =$1; $$.varargs=1; list_append($$.list, $4); @@ -1777,72 +2998,123 @@ MAYBE_PARAM_LIST: PARAM_LIST ',' "..." PARAM { // non empty PARAM_LIST: PARAM_LIST ',' PARAM { + PASS12 $$ = $1; list_append($$.list, $3); } PARAM_LIST: PARAM { + PASS12 memset(&$$,0,sizeof($$)); list_append($$.list, $1); } -PARAM: T_IDENTIFIER ':' TYPE MAYBESTATICCONSTANT { - $$ = malloc(sizeof(param_t)); +PARAM: T_IDENTIFIER ':' TYPE MAYBECONSTANT { + PASS12 + $$ = rfx_calloc(sizeof(param_t)); $$->name=$1; $$->type = $3; + PASS2 $$->value = $4; } -PARAM: T_IDENTIFIER MAYBESTATICCONSTANT { - $$ = malloc(sizeof(param_t)); +PARAM: T_IDENTIFIER MAYBECONSTANT { + PASS12 + $$ = rfx_calloc(sizeof(param_t)); $$->name=$1; $$->type = TYPE_ANY; + PASS2 $$->value = $2; } -GETSET : "get" {$$=$1;} - | "set" {$$=$1;} - | {$$=0;} +GETSET : "get" + | "set" + | {PASS12 $$=0;} FUNCTION_DECLARATION: MAYBE_MODIFIERS "function" GETSET T_IDENTIFIER '(' MAYBE_PARAM_LIST ')' - MAYBETYPE '{' {startfunction(0,$1,$3,$4,&$6,$8)} MAYBECODE '}' + MAYBETYPE '{' {PASS12 startfunction(&$1,$3,$4,&$6,$8);} MAYBECODE '}' { - code_t*c = 0; - if(state->method->late_binding) { - c = abc_getlocal_0(c); - c = abc_pushscope(c); - } - if(state->method->is_constructor && !state->method->has_super) { - // call default constructor - c = abc_getlocal_0(c); - c = abc_constructsuper(c, 0); - } - c = wrap_function(c, state->method->initcode, $11); - endfunction(0,$1,$3,$4,&$6,$8,c); + PASS1 + endfunction(&$1,$3,$4,&$6,0,0); + PASS2 + if(!state->method->info) syntaxerror("internal error"); + + code_t*c = method_header(state->method); + c = wrap_function(c, 0, $11); + + endfunction(&$1,$3,$4,&$6,$8,c); + PASS12 + list_deep_free($6.list); $$=0; } -/* ------------- package + class ids --------------- */ +MAYBE_IDENTIFIER: T_IDENTIFIER +MAYBE_IDENTIFIER: {PASS12 $$=0;} +INNERFUNCTION: "function" MAYBE_IDENTIFIER '(' MAYBE_PARAM_LIST ')' MAYBETYPE + '{' {PASS12 innerfunction($2,&$4,$6);} MAYBECODE '}' +{ + PASS1 + endfunction(0,0,$2,&$4,0,0); + PASS2 + methodinfo_t*f = state->method->info; + if(!f || !f->kind) syntaxerror("internal error"); + + code_t*c = method_header(state->method); + c = wrap_function(c, 0, $9); -CLASS: T_IDENTIFIER { + int index = state->method->var_index; + endfunction(0,0,$2,&$4,$6,c); + + $$.c = abc_getlocal(0, index); + $$.t = TYPE_FUNCTION(f); - /* try current package */ - $$ = find_class($1); - if(!$$) syntaxerror("Could not find class %s\n", $1); + PASS12 list_deep_free($4.list); } -PACKAGEANDCLASS : PACKAGE '.' T_IDENTIFIER { - $$ = registry_findclass($1, $3); - if(!$$) syntaxerror("Couldn't find class %s.%s\n", $1, $3); + +/* ------------- package + class ids --------------- */ + +CLASS: X_IDENTIFIER { + PASS1 NEW(unresolvedinfo_t,c); + memset(c, 0, sizeof(*c)); + c->kind = INFOTYPE_UNRESOLVED; + c->name = $1; + c->package = get_package_from_name($1); + if(!c->package) { + c->nsset = get_current_imports(); + /* make the compiler look for this class in the current directory, + just in case: */ + as3_schedule_class_noerror(state->package, $1); + } + $$ = (classinfo_t*)c; + PASS2 + slotinfo_t*s = find_class($1); + if(!s) syntaxerror("Could not find class/method %s (current package: %s)\n", $1, state->package); + $$ = (classinfo_t*)s; + registry_use(s); +} + +PACKAGEANDCLASS : PACKAGE '.' X_IDENTIFIER { + PASS1 NEW(unresolvedinfo_t,c); + memset(c, 0, sizeof(*c)); + c->kind = INFOTYPE_UNRESOLVED; + c->package = $1; + c->name = $3; + $$ = (classinfo_t*)c; + PASS2 + slotinfo_t*s = registry_find($1, $3); + if(!s) syntaxerror("Couldn't find class/method %s.%s\n", $1, $3); free($1);$1=0; + $$ = (classinfo_t*)s; + registry_use(s); } -QNAME: PACKAGEANDCLASS - | CLASS +CLASS_SPEC: PACKAGEANDCLASS + | CLASS -QNAME_LIST : QNAME {$$=list_new();list_append($$, $1);} -QNAME_LIST : QNAME_LIST ',' QNAME {$$=$1;list_append($$,$3);} +CLASS_SPEC_LIST : CLASS_SPEC {PASS12 $$=list_new();list_append($$, $1);} +CLASS_SPEC_LIST : CLASS_SPEC_LIST ',' CLASS_SPEC {PASS12 $$=$1;list_append($$,$3);} -TYPE : QNAME {$$=$1;} - | '*' {$$=registry_getanytype();} - | "void" {$$=registry_getanytype();} +TYPE : CLASS_SPEC {PASS12 $$=$1;} + | '*' {PASS12 $$=TYPE_ANY;} + | "void" {PASS12 $$=TYPE_VOID;} /* | "String" {$$=registry_getstringclass();} | "int" {$$=registry_getintclass();} @@ -1851,42 +3123,70 @@ TYPE : QNAME {$$=$1;} | "Number" {$$=registry_getnumberclass();} */ -MAYBETYPE: ':' TYPE {$$=$2;} -MAYBETYPE: {$$=0;} +MAYBETYPE: ':' TYPE {PASS12 $$=$2;} +MAYBETYPE: {PASS12 $$=0;} /* ----------function calls, delete, constructor calls ------ */ -MAYBE_PARAM_VALUES : %prec prec_none {$$.cc=0;$$.len=0;} -MAYBE_PARAM_VALUES : '(' MAYBE_EXPRESSION_LIST ')' {$$=$2} +MAYBE_PARAM_VALUES : %prec prec_none {$$.cc=0;$$.number=0;} +MAYBE_PARAM_VALUES : '(' MAYBE_EXPRESSION_LIST ')' {$$=$2;} -MAYBE_EXPRESSION_LIST : {$$.cc=0;$$.len=0;} +MAYBE_EXPRESSION_LIST : {$$.cc=0;$$.number=0;} MAYBE_EXPRESSION_LIST : EXPRESSION_LIST -EXPRESSION_LIST : NONCOMMAEXPRESSION {$$.len=1; +MAYBE_EXPRESSION_LIST : EXPRESSION_LIST_AND_COMMA + +EXPRESSION_LIST : NONCOMMAEXPRESSION {$$.number=1; $$.cc = $1.c; } -EXPRESSION_LIST : EXPRESSION_LIST ',' NONCOMMAEXPRESSION { - $$.len= $1.len+1; - $$.cc = code_append($1.cc, $3.c); - } -NEW : "new" CLASS MAYBE_PARAM_VALUES { - MULTINAME(m, $2); - $$.c = code_new(); - - if($2->slot) { - $$.c = abc_getglobalscope($$.c); - $$.c = abc_getslot($$.c, $2->slot); +EXPRESSION_LIST_AND_COMMA: EXPRESSION_LIST ',' {$$ = $1;} +EXPRESSION_LIST : EXPRESSION_LIST_AND_COMMA NONCOMMAEXPRESSION { + $$.number= $1.number+1; + $$.cc = code_append($1.cc, $2.c); + } + +XX : %prec new2 +NEW : "new" E XX MAYBE_PARAM_VALUES { + typedcode_t v = node_read($2); + $$.c = v.c; + if($$.c->opcode == OPCODE_COERCE_A) $$.c = code_cutlast($$.c); + + code_t*paramcode = $4.cc; + if($$.c->opcode == OPCODE_GETPROPERTY) { + multiname_t*name = $$.c->data[0];$$.c->data[0]=0; + $$.c = code_cutlast($$.c); + $$.c = code_append($$.c, paramcode); + $$.c = abc_constructprop2($$.c, name, $4.number); + multiname_destroy(name); + } else if(is_getlocal($$.c)) { + $$.c = code_append($$.c, paramcode); + $$.c = abc_construct($$.c, $4.number); + } else if(TYPE_IS_CLASS(v.t) && v.t->data) { + code_free($$.c); + classinfo_t*c = v.t->data; + MULTINAME(m, c); + $$.c = abc_findpropstrict2(0, &m); + $$.c = code_append($$.c, paramcode); + $$.c = abc_constructprop2($$.c, &m, $4.number); + /*} else if($$.c->opcode == OPCODE_GETSLOT) { + int slot = (int)(ptroff_t)$$.c->data[0]; + trait_t*t = traits_find_slotid(state->cls->abc->traits,slot);//FIXME + multiname_t*name = t->name; + $$.c = code_cutlast($$.c); + $$.c = code_append($$.c, paramcode); + $$.c = abc_constructprop2($$.c, name, $4.number);*/ } else { - $$.c = abc_findpropstrict2($$.c, &m); + $$.c = code_append($$.c, paramcode); + $$.c = abc_construct($$.c, $4.number); + } + + $$.t = TYPE_ANY; + if(TYPE_IS_CLASS(v.t) && v.t->data) { + $$.t = v.t->data; + } else { + $$.c = abc_coerce_a($$.c); + $$.t = TYPE_ANY; } - - $$.c = code_append($$.c, $3.cc); - - if($2->slot) - $$.c = abc_construct($$.c, $3.len); - else - $$.c = abc_constructprop2($$.c, &m, $3.len); - $$.t = $2; } /* TODO: use abc_call (for calling local variables), @@ -1894,8 +3194,9 @@ NEW : "new" CLASS MAYBE_PARAM_VALUES { call (for closures) */ FUNCTIONCALL : E '(' MAYBE_EXPRESSION_LIST ')' { - - $$.c = $1.c; + + typedcode_t v = node_read($1); + $$.c = v.c; if($$.c->opcode == OPCODE_COERCE_A) { $$.c = code_cutlast($$.c); } @@ -1906,11 +3207,11 @@ FUNCTIONCALL : E '(' MAYBE_EXPRESSION_LIST ')' { multiname_t*name = $$.c->data[0];$$.c->data[0]=0; $$.c = code_cutlast($$.c); $$.c = code_append($$.c, paramcode); - $$.c = abc_callproperty2($$.c, name, $3.len); + $$.c = abc_callproperty2($$.c, name, $3.number); multiname_destroy(name); - } else if($$.c->opcode == OPCODE_GETSLOT) { +/* } else if($$.c->opcode == OPCODE_GETSLOT && $$.c->prev->opcode != OPCODE_GETSCOPEOBJECT) { int slot = (int)(ptroff_t)$$.c->data[0]; - trait_t*t = abc_class_find_slotid(state->cls->abc,slot);//FIXME + trait_t*t = traits_find_slotid(state->cls->abc->traits,slot); if(t->kind!=TRAIT_METHOD) { //ok: flash allows to assign closures to members. } @@ -1918,29 +3219,30 @@ FUNCTIONCALL : E '(' MAYBE_EXPRESSION_LIST ')' { $$.c = code_cutlast($$.c); $$.c = code_append($$.c, paramcode); //$$.c = abc_callmethod($$.c, t->method, len); //#1051 illegal early access binding - $$.c = abc_callproperty2($$.c, name, $3.len); + $$.c = abc_callproperty2($$.c, name, $3.number);*/ } else if($$.c->opcode == OPCODE_GETSUPER) { multiname_t*name = $$.c->data[0];$$.c->data[0]=0; $$.c = code_cutlast($$.c); $$.c = code_append($$.c, paramcode); - $$.c = abc_callsuper2($$.c, name, $3.len); + $$.c = abc_callsuper2($$.c, name, $3.number); multiname_destroy(name); } else { - $$.c = abc_getlocal_0($$.c); + $$.c = abc_getglobalscope($$.c); $$.c = code_append($$.c, paramcode); - $$.c = abc_call($$.c, $3.len); + $$.c = abc_call($$.c, $3.number); } - memberinfo_t*f = 0; - - if(TYPE_IS_FUNCTION($1.t) && $1.t->function) { - $$.t = $1.t->function->return_type; + if(TYPE_IS_FUNCTION(v.t) && v.t->data) { + $$.t = ((methodinfo_t*)(v.t->data))->return_type; + } else if(TYPE_IS_CLASS(v.t) && v.t->data) { + // calling a class is like a typecast + $$.t = (classinfo_t*)v.t->data; } else { - $$.c = abc_coerce_a($$.c); $$.t = TYPE_ANY; + $$.c = abc_coerce_a($$.c); } - } + FUNCTIONCALL : "super" '(' MAYBE_EXPRESSION_LIST ')' { if(!state->cls) syntaxerror("super() not allowed outside of a class"); if(!state->method) syntaxerror("super() not allowed outside of a function"); @@ -1956,13 +3258,15 @@ FUNCTIONCALL : "super" '(' MAYBE_EXPRESSION_LIST ')' { syntaxerror("constructor may call super() only once"); */ state->method->has_super = 1; - $$.c = abc_constructsuper($$.c, $3.len); + + $$.c = abc_constructsuper($$.c, $3.number); $$.c = abc_pushundefined($$.c); $$.t = TYPE_ANY; } DELETE: "delete" E { - $$.c = $2.c; + typedcode_t v = node_read($2); + $$.c = v.c; if($$.c->opcode == OPCODE_COERCE_A) { $$.c = code_cutlast($$.c); } @@ -1971,12 +3275,12 @@ DELETE: "delete" E { $$.c->opcode = OPCODE_DELETEPROPERTY; } else if($$.c->opcode == OPCODE_GETSLOT) { int slot = (int)(ptroff_t)$$.c->data[0]; - multiname_t*name = abc_class_find_slotid(state->cls->abc,slot)->name; + multiname_t*name = traits_find_slotid(state->cls->abc->traits,slot)->name; $$.c = code_cutlast($$.c); $$.c = abc_deleteproperty2($$.c, name); } else { $$.c = abc_getlocal_0($$.c); - MULTINAME_LATE(m, $2.t?$2.t->access:ACCESS_PACKAGE, ""); + MULTINAME_LATE(m, v.t?v.t->access:ACCESS_PACKAGE, ""); $$.c = abc_deleteproperty2($$.c, &m); } $$.t = TYPE_BOOLEAN; @@ -1992,557 +3296,653 @@ RETURN: "return" EXPRESSION { // ----------------------- expression types ------------------------------------- -NONCOMMAEXPRESSION : E %prec below_minus {$$=$1;} -EXPRESSION : E %prec below_minus {$$ = $1;} -EXPRESSION : EXPRESSION ',' E %prec below_minus { - $$.c = $1.c; - $$.c = cut_last_push($$.c); - $$.c = code_append($$.c,$3.c); - $$.t = $3.t; +NONCOMMAEXPRESSION : E %prec below_lt { + $$ = node_read($1); } -VOIDEXPRESSION : EXPRESSION %prec below_minus { - $$=cut_last_push($1.c); +EXPRESSION : COMMA_EXPRESSION { + $$ = node_read($1); } - -// ----------------------- expression evaluation ------------------------------------- - -E : CONSTANT -E : VAR_READ %prec T_IDENTIFIER {$$ = $1;} -E : NEW {$$ = $1;} -E : DELETE {$$ = $1;} -E : T_REGEXP {$$.c = abc_pushundefined(0); /* FIXME */ - $$.t = TYPE_ANY; - } - -CONSTANT : T_BYTE {$$.c = abc_pushbyte(0, $1); - //MULTINAME(m, registry_getintclass()); - //$$.c = abc_coerce2($$.c, &m); // FIXME - $$.t = TYPE_INT; - } -CONSTANT : T_SHORT {$$.c = abc_pushshort(0, $1); - $$.t = TYPE_INT; - } -CONSTANT : T_INT {$$.c = abc_pushint(0, $1); - $$.t = TYPE_INT; - } -CONSTANT : T_UINT {$$.c = abc_pushuint(0, $1); - $$.t = TYPE_UINT; - } -CONSTANT : T_FLOAT {$$.c = abc_pushdouble(0, $1); - $$.t = TYPE_FLOAT; - } -CONSTANT : T_STRING {$$.c = abc_pushstring2(0, &$1); - $$.t = TYPE_STRING; - } -CONSTANT : "undefined" {$$.c = abc_pushundefined(0); - $$.t = TYPE_ANY; - } -CONSTANT : "true" {$$.c = abc_pushtrue(0); - $$.t = TYPE_BOOLEAN; - } -CONSTANT : "false" {$$.c = abc_pushfalse(0); - $$.t = TYPE_BOOLEAN; - } -CONSTANT : "null" {$$.c = abc_pushnull(0); - $$.t = TYPE_NULL; - } - -E : FUNCTIONCALL -E : E '<' E {$$.c = code_append($1.c,$3.c);$$.c = abc_greaterequals($$.c);$$.c=abc_not($$.c); - $$.t = TYPE_BOOLEAN; - } -E : E '>' E {$$.c = code_append($1.c,$3.c);$$.c = abc_greaterthan($$.c); - $$.t = TYPE_BOOLEAN; - } -E : E "<=" E {$$.c = code_append($1.c,$3.c);$$.c = abc_greaterthan($$.c);$$.c=abc_not($$.c); - $$.t = TYPE_BOOLEAN; - } -E : E ">=" E {$$.c = code_append($1.c,$3.c);$$.c = abc_greaterequals($$.c); - $$.t = TYPE_BOOLEAN; - } -E : E "==" E {$$.c = code_append($1.c,$3.c);$$.c = abc_equals($$.c); - $$.t = TYPE_BOOLEAN; - } -E : E "===" E {$$.c = code_append($1.c,$3.c);$$.c = abc_strictequals($$.c); - $$.t = TYPE_BOOLEAN; - } -E : E "!==" E {$$.c = code_append($1.c,$3.c);$$.c = abc_strictequals($$.c);$$.c = abc_not($$.c); - $$.t = TYPE_BOOLEAN; - } -E : E "!=" E {$$.c = code_append($1.c,$3.c);$$.c = abc_equals($$.c);$$.c = abc_not($$.c); - $$.t = TYPE_BOOLEAN; - } - -E : E "||" E {$$.t = join_types($1.t, $3.t, 'O'); - $$.c = $1.c; - $$.c = converttype($$.c, $1.t, $$.t); - $$.c = abc_dup($$.c); - code_t*jmp = $$.c = abc_iftrue($$.c, 0); - $$.c = cut_last_push($$.c); - $$.c = code_append($$.c,$3.c); - $$.c = converttype($$.c, $3.t, $$.t); - code_t*label = $$.c = abc_label($$.c); - jmp->branch = label; - } -E : E "&&" E { - $$.t = join_types($1.t, $3.t, 'A'); - /*printf("%08x:\n",$1.t); - code_dump($1.c, 0, 0, "", stdout); - printf("%08x:\n",$3.t); - code_dump($3.c, 0, 0, "", stdout); - printf("joining %08x and %08x to %08x\n", $1.t, $3.t, $$.t);*/ - $$.c = $1.c; - $$.c = converttype($$.c, $1.t, $$.t); - $$.c = abc_dup($$.c); - code_t*jmp = $$.c = abc_iffalse($$.c, 0); - $$.c = cut_last_push($$.c); - $$.c = code_append($$.c,$3.c); - $$.c = converttype($$.c, $3.t, $$.t); - code_t*label = $$.c = abc_label($$.c); - jmp->branch = label; - } - -E : '!' E {$$.c=$2.c; - $$.c = abc_not($$.c); - $$.t = TYPE_BOOLEAN; - } - -E : '~' E {$$.c=$2.c; - $$.c = abc_bitnot($$.c); - $$.t = TYPE_INT; - } - -E : E '&' E {$$.c = code_append($1.c,$3.c); - $$.c = abc_bitand($$.c); - $$.t = TYPE_INT; - } - -E : E '^' E {$$.c = code_append($1.c,$3.c); - $$.c = abc_bitxor($$.c); - $$.t = TYPE_INT; - } - -E : E '|' E {$$.c = code_append($1.c,$3.c); - $$.c = abc_bitor($$.c); - $$.t = TYPE_INT; - } - -E : E '-' E {$$.c = code_append($1.c,$3.c); - if(BOTH_INT($1,$3)) { - $$.c = abc_subtract_i($$.c); - $$.t = TYPE_INT; - } else { - $$.c = abc_subtract($$.c); - $$.t = TYPE_NUMBER; - } - } -E : E ">>" E {$$.c = code_append($1.c,$3.c); - $$.c = abc_rshift($$.c); - $$.t = TYPE_INT; - } -E : E ">>>" E {$$.c = code_append($1.c,$3.c); - $$.c = abc_urshift($$.c); - $$.t = TYPE_INT; - } -E : E "<<" E {$$.c = code_append($1.c,$3.c); - $$.c = abc_lshift($$.c); - $$.t = TYPE_INT; - } - -E : E '/' E {$$.c = code_append($1.c,$3.c); - $$.c = abc_divide($$.c); - $$.t = TYPE_NUMBER; - } -E : E '+' E {$$.c = code_append($1.c,$3.c); - $$.c = abc_add($$.c); - $$.t = TYPE_NUMBER; - } -E : E '%' E {$$.c = code_append($1.c,$3.c); - $$.c = abc_modulo($$.c); - $$.t = TYPE_NUMBER; - } -E : E '*' E {$$.c = code_append($1.c,$3.c); - if(BOTH_INT($1,$3)) { - $$.c = abc_multiply_i($$.c); - $$.t = TYPE_INT; - } else { - $$.c = abc_multiply($$.c); - $$.t = TYPE_NUMBER; - } - } - -E : E "in" E {$$.c = code_append($1.c,$3.c); - $$.c = abc_in($$.c); - $$.t = TYPE_BOOLEAN; - } - -E : E "as" E {char use_astype=0; // flash player's astype works differently than astypelate - if(use_astype && TYPE_IS_CLASS($3.t)) { - MULTINAME(m,$3.t->cls); - $$.c = abc_astype2($1.c, &m); - $$.t = $3.t->cls; - } else { - $$.c = code_append($1.c, $3.c); - $$.c = abc_astypelate($$.c); - $$.t = TYPE_ANY; - } - } - -E : E "instanceof" E - {$$.c = code_append($1.c, $3.c); - $$.c = abc_instanceof($$.c); - $$.t = TYPE_BOOLEAN; - } - -E : E "is" E {$$.c = code_append($1.c, $3.c); - $$.c = abc_istypelate($$.c); - $$.t = TYPE_BOOLEAN; - } - -E : "typeof" '(' E ')' { - $$.c = $3.c; - $$.c = abc_typeof($$.c); - $$.t = TYPE_STRING; - } - -E : "void" E { - $$.c = cut_last_push($2.c); - $$.c = abc_pushundefined($$.c); - $$.t = TYPE_ANY; - } - -E : "void" { $$.c = abc_pushundefined(0); - $$.t = TYPE_ANY; - } - -E : '(' EXPRESSION ')' {$$=$2;} //allow commas in here, too - -E : '-' E { - $$=$2; - if(IS_INT($2)) { - $$.c=abc_negate_i($$.c); - $$.t = TYPE_INT; - } else { - $$.c=abc_negate($$.c); - $$.t = TYPE_NUMBER; - } +COMMA_EXPRESSION : E %prec below_lt { + $$ = mkmultinode(&node_comma, $1); } - -E : E '[' E ']' { - $$.c = $1.c; - $$.c = code_append($$.c, $3.c); - - MULTINAME_LATE(m, $1.t?$1.t->access:ACCESS_PACKAGE, ""); - $$.c = abc_getproperty2($$.c, &m); - $$.t = 0; // array elements have unknown type +COMMA_EXPRESSION : COMMA_EXPRESSION ',' E %prec below_lt { + $$ = multinode_extend($1, $3); } - -E : '[' MAYBE_EXPRESSION_LIST ']' { - $$.c = code_new(); - $$.c = code_append($$.c, $2.cc); - $$.c = abc_newarray($$.c, $2.len); - $$.t = registry_getarrayclass(); +VOIDEXPRESSION : E %prec below_minus { + $$ = node_exec($1); +} +VOIDEXPRESSION : VOIDEXPRESSION ',' E %prec below_lt { + $$ = $1; + $$ = code_append($$, node_exec($3)); } -MAYBE_EXPRPAIR_LIST : {$$.cc=0;$$.len=0;} -MAYBE_EXPRPAIR_LIST : EXPRPAIR_LIST {$$=$1}; +MAYBE_DICT_EXPRPAIR_LIST : {$$.cc=0;$$.number=0;} +MAYBE_DICT_EXPRPAIR_LIST : DICT_EXPRPAIR_LIST {$$=$1;} -EXPRPAIR_LIST : NONCOMMAEXPRESSION ':' NONCOMMAEXPRESSION { +DICTLH: T_IDENTIFIER {$$=abc_pushstring(0,$1);} +DICTLH: T_STRING {$$=abc_pushstring2(0,&$1);} +DICTLH: T_INT {syntaxerror("dictionary keys must be strings");} +DICTLH: T_UINT {syntaxerror("dictionary keys must be strings");} +DICTLH: T_FLOAT {syntaxerror("dictionary keys must be strings");} + +DICT_EXPRPAIR_LIST : DICTLH ':' NONCOMMAEXPRESSION { $$.cc = 0; - $$.cc = code_append($$.cc, $1.c); + $$.cc = code_append($$.cc, $1); $$.cc = code_append($$.cc, $3.c); - $$.len = 2; + $$.number = 2; } -EXPRPAIR_LIST : EXPRPAIR_LIST ',' NONCOMMAEXPRESSION ':' NONCOMMAEXPRESSION { +DICT_EXPRPAIR_LIST : DICT_EXPRPAIR_LIST ',' DICTLH ':' NONCOMMAEXPRESSION { $$.cc = $1.cc; - $$.len = $1.len+2; - $$.cc = code_append($$.cc, $3.c); + $$.number = $1.number+2; + $$.cc = code_append($$.cc, $3); $$.cc = code_append($$.cc, $5.c); } -//MAYBECOMMA: ',' -//MAYBECOMMA: -E : '{' MAYBE_EXPRPAIR_LIST '}' { - $$.c = code_new(); - $$.c = code_append($$.c, $2.cc); - $$.c = abc_newobject($$.c, $2.len/2); - $$.t = registry_getobjectclass(); -} - -E : E "*=" E { - code_t*c = $3.c; - if(BOTH_INT($1,$3)) { - c=abc_multiply_i(c); - } else { - c=abc_multiply(c); - } - c=converttype(c, join_types($1.t, $3.t, '*'), $1.t); - $$.c = toreadwrite($1.c, c, 0, 0); - $$.t = $1.t; - } - -E : E "%=" E { - code_t*c = abc_modulo($3.c); - c=converttype(c, join_types($1.t, $3.t, '%'), $1.t); - $$.c = toreadwrite($1.c, c, 0, 0); - $$.t = $1.t; - } -E : E "<<=" E { - code_t*c = abc_lshift($3.c); - c=converttype(c, join_types($1.t, $3.t, '<'), $1.t); - $$.c = toreadwrite($1.c, c, 0, 0); - $$.t = $1.t; - } -E : E ">>=" E { - code_t*c = abc_rshift($3.c); - c=converttype(c, join_types($1.t, $3.t, '>'), $1.t); - $$.c = toreadwrite($1.c, c, 0, 0); - $$.t = $1.t; - } -E : E ">>>=" E { - code_t*c = abc_urshift($3.c); - c=converttype(c, join_types($1.t, $3.t, 'U'), $1.t); - $$.c = toreadwrite($1.c, c, 0, 0); - $$.t = $1.t; - } -E : E "/=" E { - code_t*c = abc_divide($3.c); - c=converttype(c, join_types($1.t, $3.t, '/'), $1.t); - $$.c = toreadwrite($1.c, c, 0, 0); - $$.t = $1.t; - } -E : E "+=" E { - code_t*c = $3.c; - if(TYPE_IS_INT($3.t) || TYPE_IS_UINT($3.t)) { - c=abc_add_i(c); - } else { - c=abc_add(c); - } - c=converttype(c, join_types($1.t, $3.t, '+'), $1.t); - - $$.c = toreadwrite($1.c, c, 0, 0); - $$.t = $1.t; - } -E : E "-=" E { code_t*c = $3.c; - if(TYPE_IS_INT($3.t) || TYPE_IS_UINT($3.t)) { - c=abc_subtract_i(c); - } else { - c=abc_subtract(c); - } - c=converttype(c, join_types($1.t, $3.t, '-'), $1.t); - - $$.c = toreadwrite($1.c, c, 0, 0); - $$.t = $1.t; - } -E : E '=' E { code_t*c = 0; - c = code_append(c, $3.c); - c = converttype(c, $3.t, $1.t); - $$.c = toreadwrite($1.c, c, 1, 0); - $$.t = $1.t; - } +// ----------------------- expression evaluation ------------------------------------- -E : E '?' E ':' E %prec below_assignment { - $$.c = $1.c; - code_t*j1 = $$.c = abc_iffalse($$.c, 0); - $$.c = code_append($$.c, $3.c); - code_t*j2 = $$.c = abc_jump($$.c, 0); - $$.c = j1->branch = abc_label($$.c); - $$.c = code_append($$.c, $5.c); - $$.c = j2->branch = abc_label($$.c); - $$.t = join_types($3.t,$5.t,'?'); - } +E : INNERFUNCTION %prec prec_none {$$ = mkcodenode($1);} +E : MEMBER %prec '.' {$$ = mkcodenode($1);} +E : NEW {$$ = mkcodenode($1);} +E : DELETE {$$ = mkcodenode($1);} +E : FUNCTIONCALL {$$ = mkcodenode($1);} +E : VAR_READ %prec T_IDENTIFIER {$$ = $1;} -// TODO: use inclocal where appropriate -E : E "++" { code_t*c = 0; - classinfo_t*type = $1.t; - if(TYPE_IS_INT(type) || TYPE_IS_UINT(type)) { - c=abc_increment_i(c); - type = TYPE_INT; - } else { - c=abc_increment(c); - type = TYPE_NUMBER; - } - c=converttype(c, type, $1.t); - $$.c = toreadwrite($1.c, c, 0, 1); - $$.t = $1.t; - } -E : E "--" { code_t*c = 0; - classinfo_t*type = $1.t; - if(TYPE_IS_INT(type) || TYPE_IS_UINT(type)) { - c=abc_decrement_i(c); - type = TYPE_INT; - } else { - c=abc_decrement(c); - type = TYPE_NUMBER; - } - c=converttype(c, type, $1.t); - $$.c = toreadwrite($1.c, c, 0, 1); - $$.t = $1.t; - } +E : CONSTANT { + $$ = mkconstnode($1); +} -E : "++" %prec plusplus_prefix E { code_t*c = 0; - classinfo_t*type = $2.t; - if(TYPE_IS_INT(type) || TYPE_IS_UINT(type)) { - c=abc_increment_i(c); - type = TYPE_INT; - } else { - c=abc_increment(c); - type = TYPE_NUMBER; - } - c=converttype(c, type, $2.t); - $$.c = toreadwrite($2.c, c, 0, 0); - $$.t = $2.t; - } +E : XML { + $$ = $1; +} -E : "--" %prec minusminus_prefix E { code_t*c = 0; - classinfo_t*type = $2.t; - if(TYPE_IS_INT(type) || TYPE_IS_UINT(type)) { - c=abc_decrement_i(c); - type = TYPE_INT; - } else { - c=abc_decrement(c); - type = TYPE_NUMBER; - } - c=converttype(c, type, $2.t); - $$.c = toreadwrite($2.c, c, 0, 0); - $$.t = $2.t; - } +/* regexp */ +E : T_REGEXP { + typedcode_t v; + v.c = 0; + multiname_t m = {QNAME, &stdns, 0, "RegExp"}; + if(!$1.options) { + v.c = abc_getlex2(v.c, &m); + v.c = abc_pushstring(v.c, $1.pattern); + v.c = abc_construct(v.c, 1); + } else { + v.c = abc_getlex2(v.c, &m); + v.c = abc_pushstring(v.c, $1.pattern); + v.c = abc_pushstring(v.c, $1.options); + v.c = abc_construct(v.c, 2); + } + v.t = TYPE_REGEXP; + $$ = mkcodenode(v); +} + +E : KW_ARGUMENTS { + PASS1 + state->method->need_arguments = 1; + PASS2 + typedcode_t v; + v.c = abc_getlocal(0, state->method->need_arguments); + v.t = TYPE_ARRAY; + $$ = mkcodenode(v); +} + +/* array */ +E : '[' MAYBE_EXPRESSION_LIST ']' { + typedcode_t v; + v.c = code_new(); + v.c = code_append(v.c, $2.cc); + v.c = abc_newarray(v.c, $2.number); + v.t = registry_getarrayclass(); + $$ = mkcodenode(v); +} + +/* dictionary */ +E : "{ (dictionary)" MAYBE_DICT_EXPRPAIR_LIST '}' { + typedcode_t v; + v.c = code_new(); + v.c = code_append(v.c, $2.cc); + v.c = abc_newobject(v.c, $2.number/2); + v.t = registry_getobjectclass(); + $$ = mkcodenode(v); +} + +E : E '<' E {$$ = mknode2(&node_lt,$1,$3);} +E : E '>' E {$$ = mknode2(&node_gt,$1,$3);} +E : E "<=" E {$$ = mknode2(&node_le,$1,$3);} +E : E ">=" E {$$ = mknode2(&node_ge,$1,$3);} +E : E "==" E {$$ = mknode2(&node_eqeq,$1,$3);} +E : E "===" E {$$ = mknode2(&node_eqeqeq,$1,$3);} +E : E "!==" E {$$ = mknode2(&node_noteqeq,$1,$3);} +E : E "!=" E {$$ = mknode2(&node_noteq,$1,$3);} +E : E "||" E {$$ = mknode2(&node_oror,$1,$3);} +E : E "&&" E {$$ = mknode2(&node_andand,$1,$3);} +E : '!' E {$$ = mknode1(&node_not, $2);} +E : '~' E {$$ = mknode1(&node_bitnot, $2);} +E : E '&' E {$$ = mknode2(&node_bitand, $1, $3);} +E : E '^' E {$$ = mknode2(&node_bitxor, $1, $3);} +E : E '|' E {$$ = mknode2(&node_bitor, $1, $3);} +E : E ">>" E {$$ = mknode2(&node_shr, $1, $3);} +E : E ">>>" E {$$ = mknode2(&node_ushr, $1, $3);} +E : E "<<" E {$$ = mknode2(&node_shl, $1, $3);} +E : E '/' E {$$ = mknode2(&node_div, $1, $3);} +E : E '%' E {$$ = mknode2(&node_mod, $1, $3);} +E : E '+' E {$$ = mknode2(&node_plus, $1, $3);} +E : E '-' E {$$ = mknode2(&node_minus, $1, $3);} +E : E '*' E {$$ = mknode2(&node_multiply, $1, $3);} +E : E "in" E {$$ = mknode2(&node_in, $1, $3);} +E : E "as" E {$$ = mknode2(&node_as, $1, $3);} +E : E "instanceof" E {$$ = mknode2(&node_instanceof, $1, $3);} +E : E "is" E {$$ = mknode2(&node_is, $1, $3);} +E : "typeof" E {$$ = mknode1(&node_typeof, $2);} +E : "void" E {$$ = mknode1(&node_void, $2);} +E : "void" { $$ = mkconstnode(constant_new_undefined());} +E : '(' COMMA_EXPRESSION ')' { $$=$2;} +E : '-' E {$$ = mknode1(&node_neg, $2);} +E : E '[' E ']' {$$ = mknode2(&node_arraylookup, $1,$3);} +E : E "*=" E {$$ = mknode2(&node_muleq, $1, $3);} +E : E "%=" E {$$ = mknode2(&node_modeq, $1, $3);} +E : E "<<=" E {$$ = mknode2(&node_shleq, $1, $3);} +E : E ">>=" E {$$ = mknode2(&node_shreq, $1, $3);} +E : E ">>>=" E {$$ = mknode2(&node_ushreq, $1, $3);} +E : E "/=" E { $$ = mknode2(&node_diveq, $1, $3);} +E : E "|=" E { $$ = mknode2(&node_bitoreq, $1, $3);} +E : E "^=" E { $$ = mknode2(&node_bitxoreq, $1, $3);} +E : E "&=" E { $$ = mknode2(&node_bitandeq, $1, $3);} +E : E "+=" E { $$ = mknode2(&node_pluseq, $1, $3);} +E : E "-=" E { $$ = mknode2(&node_minuseq, $1, $3);} +E : E '=' E { $$ = mknode2(&node_assign, $1, $3);} +E : E '?' E ':' E %prec below_assignment { $$ = mknode3(&node_tenary, $1, $3, $5);} + +E : E "++" { $$ = mknode1(&node_rplusplus, $1);} +E : E "--" { $$ = mknode1(&node_rminusminus, $1);} +E : "++" %prec plusplus_prefix E {$$ = mknode1(&node_lplusplus, $2); } +E : "--" %prec minusminus_prefix E {$$ = mknode1(&node_lminusminus, $2); } E : "super" '.' T_IDENTIFIER { if(!state->cls->info) syntaxerror("super keyword not allowed outside a class"); classinfo_t*t = state->cls->info->superclass; if(!t) t = TYPE_OBJECT; - - memberinfo_t*f = registry_findmember(t, $3, 1); - namespace_t ns = {flags2access(f->flags), ""}; + memberinfo_t*f = findmember_nsset(t, $3, 1, 0); MEMBER_MULTINAME(m, f, $3); - $$.c = 0; - $$.c = abc_getlocal_0($$.c); - $$.c = abc_getsuper2($$.c, &m); - $$.t = memberinfo_gettype(f); + typedcode_t v; + v.c = 0; + v.c = abc_getlocal_0(v.c); + v.c = abc_getsuper2(v.c, &m); + v.t = slotinfo_gettype((slotinfo_t*)f); + $$ = mkcodenode(v); } -E : E '.' T_IDENTIFIER - {$$.c = $1.c; - classinfo_t*t = $1.t; - char is_static = 0; - if(TYPE_IS_CLASS(t) && t->cls) { - t = t->cls; - is_static = 1; - } - if(t) { - memberinfo_t*f = registry_findmember(t, $3, 1); - char noslot = 0; - if(f && !is_static != !(f->flags&FLAG_STATIC)) - noslot=1; - if(f && f->slot && !noslot) { - $$.c = abc_getslot($$.c, f->slot); - } else { - MEMBER_MULTINAME(m, f, $3); - $$.c = abc_getproperty2($$.c, &m); - } - /* determine type */ - $$.t = memberinfo_gettype(f); - if(!$$.t) - $$.c = abc_coerce_a($$.c); - } else { - /* when resolving a property on an unknown type, we do know the - name of the property (and don't seem to need the package), but - we need to make avm2 try out all access modes */ - multiname_t m = {MULTINAME, 0, &nopackage_namespace_set, $3}; - $$.c = abc_getproperty2($$.c, &m); - $$.c = abc_coerce_a($$.c); - $$.t = registry_getanytype(); - } - } +E : '@' T_IDENTIFIER { + typedcode_t v; + multiname_t m = {MULTINAMEA, 0, &nopackage_namespace_set, $2}; + v.c = abc_getlex2(0, &m); + v.t = TYPE_STRING; + $$ = mkcodenode(v); +} -VAR_READ : T_IDENTIFIER { - $$.t = 0; - $$.c = 0; - classinfo_t*a = 0; - memberinfo_t*f = 0; - - variable_t*v; - /* look at variables */ - if((v = find_variable($1))) { - // $1 is a local variable - $$.c = abc_getlocal($$.c, v->index); - $$.t = v->type; - - /* look at current class' members */ - } else if(state->cls && (f = registry_findmember(state->cls->info, $1, 1))) { - // $1 is a function in this class - int var_is_static = (f->flags&FLAG_STATIC); - int i_am_static = ((state->method && state->method->info)?(state->method->info->flags&FLAG_STATIC):FLAG_STATIC); - if(var_is_static != i_am_static) { - /* there doesn't seem to be any "static" way to access - static properties of a class */ - state->method->late_binding = 1; - $$.t = f->type; - namespace_t ns = {flags2access(f->flags), ""}; - multiname_t m = {QNAME, &ns, 0, $1}; - $$.c = abc_findpropstrict2($$.c, &m); - $$.c = abc_getproperty2($$.c, &m); +E : E '.' '(' {PASS12 new_state();state->xmlfilter=1;} E ')' { + PASS1 old_state(); + PASS2 + typedcode_t v = node_read($1); + typedcode_t w = node_read($5); + code_t*c = 0; + int index = alloc_local(); + int result = alloc_local(); + int tmp = alloc_local(); + int xml = alloc_local(); + + c = code_append(c, v.c); + c = abc_checkfilter(c); + c = abc_coerce_a(c); //hasnext2 converts to * + c = abc_setlocal(c, xml); + multiname_t m = {QNAME, &stdns, 0, "XMLList"}; + c = abc_getlex2(c, &m); + c = abc_construct(c, 0); + c = abc_setlocal(c, result); + c = abc_pushbyte(c, 0); + c = abc_setlocal(c, index); + code_t*jmp = c = abc_jump(c, 0); + code_t*loop = c = abc_label(c); + c = abc_getlocal(c, xml); + c = abc_getlocal(c, index); + c = abc_nextvalue(c); + c = abc_dup(c); + c = abc_setlocal(c, tmp); + c = abc_pushwith(c); + c = code_append(c, w.c); + c = abc_popscope(c); + code_t*b = c = abc_iffalse(c, 0); + c = abc_getlocal(c, result); + c = abc_getlocal(c, index); + c = abc_getlocal(c, tmp); + multiname_t m2 = {MULTINAMEL, 0, &nopackage_namespace_set, 0}; + c = abc_setproperty2(c, &m2); + c = b->branch = jmp->branch = abc_nop(c); + c = abc_kill(c, tmp); + c = abc_hasnext2(c, xml, index); + c = abc_iftrue(c, loop); + c = abc_getlocal(c, result); + c = abc_kill(c, xml); + c = abc_kill(c, result); + c = abc_kill(c, index); + + c = var_block(c, state->vars); + old_state(); + typedcode_t r; + r.c = c; + r.t = TYPE_XMLLIST; + $$ = mkcodenode(r); +} + +ID_OR_NS : T_IDENTIFIER {$$=$1;} +ID_OR_NS : '*' {$$="*";} +SUBNODE: X_IDENTIFIER + | '*' {$$="*";} + +%code { + node_t* resolve_identifier(const char*name); + node_t* get_descendants(node_t*e,const char*ns,const char*subnode,char multi, char attr) + { + typedcode_t v = node_read(e); + typedcode_t w; + + multiname_t m = {0,0,0,subnode}; + namespace_t zero = {ZERONAMESPACE,"*"}; + if(!strcmp(ns,"*")) { + m.ns = &zero; + m.type = attr?QNAMEA:QNAME; + } else { + typedcode_t w = node_read(resolve_identifier(ns)); + if(!TYPE_IS_NAMESPACE(w.t)) { + as3_softwarning("%s might not be a namespace", ns); + } + v.c = code_append(v.c, w.c); + v.c = converttype(v.c, w.t, TYPE_NAMESPACE); + m.type = attr?RTQNAMEA:RTQNAME; + } + + if(!multi) { + v.c = abc_getproperty2(v.c, &m); + } else { + v.c = abc_getdescendants2(v.c, &m); + } + + if(TYPE_IS_XML(v.t)) { + v.t = TYPE_XMLLIST; + } else { + v.c = abc_coerce_a(v.c); + v.t = TYPE_ANY; + } + return mkcodenode(v); + } +}; + +E : E '.' ID_OR_NS "::" SUBNODE { + $$ = get_descendants($1, $3, $5, 0, 0); +} +E : E ".." SUBNODE { + typedcode_t v = node_read($1); + multiname_t m = {MULTINAME, 0, &nopackage_namespace_set, $3}; + v.c = abc_getdescendants2(v.c, &m); + v.t = TYPE_XMLLIST; + $$ = mkcodenode(v); +} +E : E ".." ID_OR_NS "::" SUBNODE { + $$ = get_descendants($1, $3, $5, 1, 0); +} +E : E '.' '[' E ']' { + typedcode_t v = node_read($1); + typedcode_t w = node_read($4); + multiname_t m = {MULTINAMEL, 0, &nopackage_namespace_set, 0}; + v.c = code_append(v.c, w.c); + v.c = converttype(w.c, w.t, TYPE_STRING); + v.c = abc_getproperty2(v.c, &m); + v.t = TYPE_XMLLIST; + $$ = mkcodenode(v); +} + +E : E '.' '@' SUBNODE { + typedcode_t v = node_read($1); + multiname_t m = {MULTINAMEA, 0, &nopackage_namespace_set, $4}; + v.c = abc_getproperty2(v.c, &m); + v.t = TYPE_STRING; + $$ = mkcodenode(v); +} + +E : E '.' '@' ID_OR_NS "::" SUBNODE { + $$ = get_descendants($1, $4, $6, 0, 1); +} + +E : E ".." '@' SUBNODE { + typedcode_t v = node_read($1); + multiname_t m = {MULTINAMEA, 0, &nopackage_namespace_set, $4}; + v.c = abc_getdescendants2(v.c, &m); + v.t = TYPE_STRING; + $$ = mkcodenode(v); +} +E : E ".." '@' ID_OR_NS "::" SUBNODE { + $$ = get_descendants($1, $4, $6, 1, 1); +} + +E : E '.' '@' '[' E ']' { + typedcode_t v = node_read($1); + typedcode_t w = node_read($5); + multiname_t m = {MULTINAMELA, 0, &nopackage_namespace_set, 0}; + v.c = code_append(v.c, w.c); + v.c = converttype(w.c, w.t, TYPE_STRING); + v.c = abc_getproperty2(v.c, &m); + v.t = TYPE_STRING; + $$ = mkcodenode(v); +} +E : E ".." '@' '[' E ']' { + typedcode_t v = node_read($1); + typedcode_t w = node_read($5); + multiname_t m = {MULTINAMELA, 0, &nopackage_namespace_set, 0}; + v.c = code_append(v.c, w.c); + v.c = converttype(w.c, w.t, TYPE_STRING); + v.c = abc_getdescendants2(v.c, &m); + v.t = TYPE_STRING; + $$ = mkcodenode(v); +} + +MEMBER : E '.' SUBNODE { + typedcode_t v1 = node_read($1); + $$.c = v1.c; + classinfo_t*t = v1.t; + char is_static = 0; + if(TYPE_IS_CLASS(t) && t->data) { + t = t->data; + is_static = 1; + } + if(TYPE_IS_XML(t) && !findmember_nsset(t, $3, 1, is_static)) { + multiname_t m = {MULTINAME, 0, &nopackage_namespace_set, $3}; + $$.c = abc_getproperty2($$.c, &m); + $$.c = abc_coerce_a($$.c); + $$.t = TYPE_XMLLIST; + } else if(t) { + if(t->subtype==INFOTYPE_UNRESOLVED) { + syntaxerror("syntaxerror: trying to resolve property '%s' on incomplete object '%s'", $3, t->name); + } + memberinfo_t*f = findmember_nsset(t, $3, 1, is_static); + char noslot = 0; + if(f && !is_static != !(f->flags&FLAG_STATIC)) + noslot=1; + if(f && f->slot && !noslot) { + $$.c = abc_getslot($$.c, f->slot); } else { - if(f->slot>0) { - $$.c = abc_getlocal_0($$.c); - $$.c = abc_getslot($$.c, f->slot); - } else { - namespace_t ns = {flags2access(f->flags), ""}; - multiname_t m = {QNAME, &ns, 0, $1}; - $$.c = abc_getlocal_0($$.c); - $$.c = abc_getproperty2($$.c, &m); + if(!f) { + if(!TYPE_IS_XMLLIST(t)) { + as3_softwarning("Access of undefined property '%s' in %s", $3, t->name); + } } + MEMBER_MULTINAME(m, f, $3); + $$.c = abc_getproperty2($$.c, &m); } - if(f->kind == MEMBER_METHOD) { - $$.t = TYPE_FUNCTION(f); + /* determine type */ + $$.t = slotinfo_gettype((slotinfo_t*)f); + if(!$$.t) + $$.c = abc_coerce_a($$.c); + + } else if(v1.c && v1.c->opcode == OPCODE___PUSHPACKAGE__) { + string_t*package = v1.c->data[0]; + char*package2 = concat3(package->str, ".", $3); + + slotinfo_t*a = registry_find(package->str, $3); + if(a) { + $$ = push_class(a); + } else if(dict_contains(state->import_toplevel_packages, package2) || + registry_ispackage(package2)) { + $$.c = v1.c; + $$.c->data[0] = string_new4(package2); + $$.t = 0; } else { - $$.t = f->type; + syntaxerror("couldn't resolve %s", package2); } - - /* look at actual classes, in the current package and imported */ - } else if((a = find_class($1))) { - if(a->flags & FLAG_METHOD) { - MULTINAME(m, a); - $$.c = abc_findpropstrict2($$.c, &m); - $$.c = abc_getproperty2($$.c, &m); - $$.t = TYPE_FUNCTION(a->function); - } else { - if(a->slot) { - $$.c = abc_getglobalscope($$.c); - $$.c = abc_getslot($$.c, a->slot); + } else { + /* when resolving a property on an unknown type, we do know the + name of the property (and don't seem to need the package), but + we need to make avm2 try out all access modes */ + as3_softwarning("Resolving %s on unknown type", $3); + multiname_t m = {MULTINAME, 0, &nopackage_namespace_set, $3}; + $$.c = abc_getproperty2($$.c, &m); + $$.c = abc_coerce_a($$.c); + $$.t = TYPE_ANY; + } +} + +%code { + node_t* var_read(variable_t*v) + { + typedcode_t o; + o.c = abc_getlocal(0, v->index); + o.t = v->type; + return mkcodenode(o); + } + + node_t* resolve_identifier(const char*name) + { + typedcode_t o; + o.t = 0; + o.c = 0; + + slotinfo_t*a = 0; + memberinfo_t*f = 0; + + variable_t*v; + /* look at variables */ + if((v = find_variable(state, name))) { + // name is a local variable + return var_read(v); + } + if((v = find_slot(state->method, name))) { + o.c = abc_getscopeobject(o.c, 1); + o.c = abc_getslot(o.c, v->index); + o.t = v->type; + return mkcodenode(o); + } + + int i_am_static = state->method->is_static; + + if(!state->method->inner && !state->xmlfilter && state->cls) + { + /* look at current class' members */ + if((f = findmember_nsset(state->cls->info, name, 1, i_am_static))) + { + // name is a member or attribute in this class + int var_is_static = (f->flags&FLAG_STATIC); + + if(f->kind == INFOTYPE_VAR && (f->flags&FLAG_CONST)) { + /* if the variable is a constant (and we know what is evaluates to), we + can just use the value itself */ + varinfo_t*v = (varinfo_t*)f; + if(v->value) { + return mkconstnode(v->value); + } + } + + if(var_is_static >= i_am_static) { + if(f->kind == INFOTYPE_METHOD) { + o.t = TYPE_FUNCTION(f); + } else { + o.t = f->type; + } + + if(var_is_static && !i_am_static) { + /* access to a static member from a non-static location. + do this via findpropstrict: + there doesn't seem to be any non-lookup way to access + static properties of a class */ + state->method->late_binding = 1; + o.t = f->type; + namespace_t ns = {f->access, f->package}; + multiname_t m = {QNAME, &ns, 0, name}; + o.c = abc_findpropstrict2(o.c, &m); + o.c = abc_getproperty2(o.c, &m); + return mkcodenode(o); + } else if(f->slot>0) { + o.c = abc_getlocal_0(o.c); + o.c = abc_getslot(o.c, f->slot); + return mkcodenode(o); + } else { + MEMBER_MULTINAME(m, f, name); + o.c = abc_getlocal_0(o.c); + o.c = abc_getproperty2(o.c, &m); + return mkcodenode(o); + } + } + } + /* special case: it's allowed to access non-static constants + from a static context */ + if(i_am_static && (f=findmember_nsset(state->cls->info, name, 1, 0))) { + if(f->kind == INFOTYPE_VAR && (f->flags&FLAG_CONST)) { + varinfo_t*v = (varinfo_t*)f; + if(v->value) { + return mkconstnode(v->value); + } + } + } + } + + /* look at actual classes, in the current package and imported */ + if(!state->xmlfilter && (a = find_class(name))) { + registry_use(a); + if(state->cls && state->cls->info == (classinfo_t*)a && i_am_static) { + o.c = abc_getlocal_0(0); + o.t = TYPE_CLASS((classinfo_t*)a); } else { - MULTINAME(m, a); - $$.c = abc_getlex2($$.c, &m); + o = push_class(a); } - $$.t = TYPE_CLASS(a); + return mkcodenode(o); } - /* unknown object, let the avm2 resolve it */ - } else { - if(strcmp($1,"trace")) - warning("Couldn't resolve '%s', doing late binding", $1); - state->method->late_binding = 1; - - multiname_t m = {MULTINAME, 0, &nopackage_namespace_set, $1}; + /* look through package prefixes */ + if(!state->xmlfilter && + (dict_contains(state->import_toplevel_packages, name) || + registry_ispackage(name))) { + o.c = abc___pushpackage__(o.c, (char*)name); + o.t = 0; + return mkcodenode(o); //? + } - $$.t = 0; - $$.c = abc_findpropstrict2($$.c, &m); - $$.c = abc_getproperty2($$.c, &m); + /* unknown object, let the avm2 resolve it */ + if(1) { + if(!state->method->inner && !state->xmlfilter) { + /* we really should make inner functions aware of the class context */ + as3_warning("Couldn't resolve '%s', doing late binding", name); + } + state->method->late_binding = 1; + + multiname_t m = {MULTINAME, 0, &nopackage_namespace_set, name}; + + o.t = 0; + o.c = abc_findpropstrict2(o.c, &m); + o.c = abc_getproperty2(o.c, &m); + return mkcodenode(o); + } } -} +}; + +VAR_READ : T_IDENTIFIER { + PASS1 + /* Queue unresolved identifiers for checking against the parent + function's variables. + We consider everything which is not a local variable "unresolved". + This encompasses class names, members of the surrounding class + etc. which is *correct* because local variables of the parent function + would shadow those. + */ + + if(!find_variable(state, $1)) { + unknown_variable($1); + /* let the compiler know that it might want to check the current directory/package + for this identifier- maybe there's a file $1.as defining $1. */ + as3_schedule_class_noerror(state->package, $1); + } + + $$ = 0; + PASS2 -//TODO: -//VARIABLE : VARIABLE ".." T_IDENTIFIER // descendants -//VARIABLE : VARIABLE "::" VARIABLE // namespace declaration -//VARIABLE : VARIABLE "::" '[' EXPRESSION ']' // qualified expression + $$ = resolve_identifier($1); +} // ----------------- namespaces ------------------------------------------------- -NAMESPACE_DECLARATION : MAYBE_MODIFIERS "namespace" T_IDENTIFIER {$$=0;} -NAMESPACE_DECLARATION : MAYBE_MODIFIERS "namespace" T_IDENTIFIER '=' T_IDENTIFIER {$$=0;} -NAMESPACE_DECLARATION : MAYBE_MODIFIERS "namespace" T_IDENTIFIER '=' T_STRING {$$=0;} +%code { + void add_active_url(const char*url) + { + NEW(namespace_t,n); + n->name = url; + list_append(state->active_namespace_urls, n); + } +}; + +NAMESPACE_ID : "namespace" T_IDENTIFIER { + PASS12 + NEW(namespace_decl_t,n); + n->name = $2; + n->url = $2; + $$=n; +} +NAMESPACE_ID : "namespace" T_IDENTIFIER '=' T_IDENTIFIER { + PASS12 + NEW(namespace_decl_t,n); + n->name = $2; + n->url = $4; + $$=n; +} +NAMESPACE_ID : "namespace" T_IDENTIFIER '=' T_STRING { + PASS12 + NEW(namespace_decl_t,n); + n->name = $2; + n->url = $4.str; + $$=n; +} +NAMESPACE_DECLARATION : MAYBE_MODIFIERS NAMESPACE_ID { + PASS12 + dict_put(state->namespaces, (unsigned char*)$2->name, (void*)$2->url); + + namespace_t access = modifiers2access(&$1); + varinfo_t* var = varinfo_register_global(access.access, state->package, $2->name); + var->type = TYPE_NAMESPACE; + namespace_t ns; + ns.access = ACCESS_NAMESPACE; + ns.name = $2->url; + var->value = constant_new_namespace(&ns); + + if(as3_pass==2) { + MULTINAME(m, TYPE_NAMESPACE); + trait_t*t = add_abc_slot(&$1, $2->name, 0, 0); + t->value = var->value; + t->type_name = multiname_clone(&m); + } + + $$=0; +} + +DEFAULT_NAMESPACE : "default xml" "namespace" '=' E +{ + $$ = 0; + $$ = code_append($$, node_read($4).c); + $$ = abc_dxnslate($$); +} + +USE_NAMESPACE : "use" "namespace" CLASS_SPEC { + PASS12 + + varinfo_t*s = (varinfo_t*)$3; + if(s->kind == INFOTYPE_UNRESOLVED) { + s = (varinfo_t*)registry_resolve((slotinfo_t*)s); + if(!s) + syntaxerror("Couldn't resolve namespace %s", $3->name); + } + + if(!s || s->kind != INFOTYPE_VAR) + syntaxerror("%s.%s is not a public namespace (%d)", $3->package, $3->name, s?s->kind:-1); + if(!s->value || !NS_TYPE(s->value->type)) + syntaxerror("%s.%s is not a namespace", $3->package, $3->name); -USE_NAMESPACE : "use" "namespace" T_IDENTIFIER {$$=0;} + const char*url = s->value->ns->name; + dict_put(state->namespaces, (unsigned char*)$3->name, (void*)url); + add_active_url(url); + $$=0; +}