| /* Copyright Vladimir Prus 2003. Distributed under the Boost */ |
| /* Software License, Version 1.0. (See accompanying */ |
| /* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) */ |
| |
| #include "class.h" |
| #include "strings.h" |
| #include "variable.h" |
| #include "frames.h" |
| #include "rules.h" |
| #include "newstr.h" |
| |
| #include "hash.h" |
| |
| |
| static struct hash * classes = 0; |
| |
| |
| static void check_defined( LIST * class_names ) |
| { |
| for ( ; class_names; class_names = class_names->next ) |
| { |
| char * * p = &class_names->string; |
| if ( !hashcheck( classes, (HASHDATA * *)&p ) ) |
| { |
| printf( "Class %s is not defined\n", class_names->string ); |
| abort(); |
| } |
| } |
| } |
| |
| |
| static char * class_module_name( char * declared_name ) |
| { |
| string name[ 1 ]; |
| char * result; |
| |
| string_new( name ); |
| string_append( name, "class@" ); |
| string_append( name, declared_name ); |
| |
| result = newstr( name->value ); |
| string_free( name ); |
| |
| return result; |
| } |
| |
| |
| struct import_base_data |
| { |
| char * base_name; |
| module_t * base_module; |
| module_t * class_module; |
| }; |
| |
| |
| static void import_base_rule( void * r_, void * d_ ) |
| { |
| RULE * r = (RULE *)r_; |
| RULE * ir1; |
| RULE * ir2; |
| struct import_base_data * d = (struct import_base_data *)d_; |
| string qualified_name[ 1 ]; |
| |
| string_new ( qualified_name ); |
| string_append ( qualified_name, d->base_name ); |
| string_push_back( qualified_name, '.' ); |
| string_append ( qualified_name, r->name ); |
| |
| ir1 = import_rule( r, d->class_module, r->name ); |
| ir2 = import_rule( r, d->class_module, qualified_name->value ); |
| |
| /* Copy 'exported' flag. */ |
| ir1->exported = ir2->exported = r->exported; |
| |
| /* If we are importing a class method, localize it. */ |
| if ( ( r->module == d->base_module ) || ( r->module->class_module && |
| ( r->module->class_module == d->base_module ) ) ) |
| ir1->module = ir2->module = d->class_module; |
| |
| string_free( qualified_name ); |
| } |
| |
| |
| /* |
| * For each exported rule 'n', declared in class module for base, imports that |
| * rule in 'class' as 'n' and as 'base.n'. Imported rules are localized and |
| * marked as exported. |
| */ |
| |
| static void import_base_rules( module_t * class, char * base ) |
| { |
| module_t * base_module = bindmodule( class_module_name( base ) ); |
| struct import_base_data d; |
| d.base_name = base; |
| d.base_module = base_module; |
| d.class_module = class; |
| |
| if ( base_module->rules ) |
| hashenumerate( base_module->rules, import_base_rule, &d ); |
| |
| import_module( imported_modules( base_module ), class ); |
| } |
| |
| |
| char * make_class_module( LIST * xname, LIST * bases, FRAME * frame ) |
| { |
| char * name = class_module_name( xname->string ); |
| char * * pp = &xname->string; |
| module_t * class_module = 0; |
| module_t * outer_module = frame->module; |
| |
| if ( !classes ) |
| classes = hashinit( sizeof( char * ), "classes" ); |
| |
| if ( hashcheck( classes, (HASHDATA * *)&pp ) ) |
| { |
| printf( "Class %s already defined\n", xname->string ); |
| abort(); |
| } |
| else |
| { |
| hashenter( classes, (HASHDATA * *)&pp ); |
| } |
| check_defined( bases ); |
| |
| class_module = bindmodule( name ); |
| |
| exit_module( outer_module ); |
| enter_module( class_module ); |
| |
| var_set( "__name__", xname, VAR_SET ); |
| var_set( "__bases__", bases, VAR_SET ); |
| |
| exit_module( class_module ); |
| enter_module( outer_module ); |
| |
| for ( ; bases; bases = bases->next ) |
| import_base_rules( class_module, bases->string ); |
| |
| return name; |
| } |