diff options
Diffstat (limited to 'tools/build/src/engine/class.c')
| -rw-r--r-- | tools/build/src/engine/class.c | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/tools/build/src/engine/class.c b/tools/build/src/engine/class.c new file mode 100644 index 000000000..a4abfaac8 --- /dev/null +++ b/tools/build/src/engine/class.c @@ -0,0 +1,191 @@ +/* + * 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 "constants.h" +#include "frames.h" +#include "hash.h" +#include "lists.h" +#include "object.h" +#include "rules.h" +#include "strings.h" +#include "variable.h" + +#include <stdio.h> +#include <stdlib.h> + + +static struct hash * classes = 0; + + +static void check_defined( LIST * class_names ) +{ + LISTITER iter = list_begin( class_names ); + LISTITER const end = list_end( class_names ); + for ( ; iter != end; iter = list_next( iter ) ) + { + if ( !hash_find( classes, list_item( iter ) ) ) + { + printf( "Class %s is not defined\n", object_str( list_item( iter ) ) + ); + abort(); + } + } +} + + +static OBJECT * class_module_name( OBJECT * declared_name ) +{ + string name[ 1 ]; + OBJECT * result; + + string_new( name ); + string_append( name, "class@" ); + string_append( name, object_str( declared_name ) ); + + result = object_new( name->value ); + string_free( name ); + + return result; +} + + +struct import_base_data +{ + OBJECT * 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_; + OBJECT * qname; + + string qualified_name[ 1 ]; + string_new ( qualified_name ); + string_append ( qualified_name, object_str( d->base_name ) ); + string_push_back( qualified_name, '.' ); + string_append ( qualified_name, object_str( r->name ) ); + qname = object_new( qualified_name->value ); + string_free( qualified_name ); + + ir1 = import_rule( r, d->class_module, r->name ); + ir2 = import_rule( r, d->class_module, qname ); + + object_free( qname ); + + /* 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 ) ) ) + { + rule_localize( ir1, d->class_module ); + rule_localize( ir2, d->class_module ); + } +} + + +/* + * 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_, OBJECT * base ) +{ + OBJECT * module_name = class_module_name( base ); + module_t * base_module = bindmodule( module_name ); + LIST * imported; + struct import_base_data d; + d.base_name = base; + d.base_module = base_module; + d.class_module = class_; + object_free( module_name ); + + if ( base_module->rules ) + hashenumerate( base_module->rules, import_base_rule, &d ); + + imported = imported_modules( base_module ); + import_module( imported, class_ ); + list_free( imported ); +} + + +OBJECT * make_class_module( LIST * xname, LIST * bases, FRAME * frame ) +{ + OBJECT * name = class_module_name( list_front( xname ) ); + OBJECT * * pp; + module_t * class_module = 0; + module_t * outer_module = frame->module; + int found; + + if ( !classes ) + classes = hashinit( sizeof( OBJECT * ), "classes" ); + + pp = (OBJECT * *)hash_insert( classes, list_front( xname ), &found ); + if ( !found ) + { + *pp = object_copy( list_front( xname ) ); + } + else + { + printf( "Class %s already defined\n", object_str( list_front( xname ) ) + ); + abort(); + } + check_defined( bases ); + + class_module = bindmodule( name ); + + { + /* + Initialize variables that Boost.Build inserts in every object. + We want to avoid creating the object's hash if it isn't needed. + */ + int num = class_module->num_fixed_variables; + module_add_fixed_var( class_module, constant_name, &num ); + module_add_fixed_var( class_module, constant_class, &num ); + module_set_fixed_variables( class_module, num ); + } + + var_set( class_module, constant_name, xname, VAR_SET ); + var_set( class_module, constant_bases, bases, VAR_SET ); + + { + LISTITER iter = list_begin( bases ); + LISTITER const end = list_end( bases ); + for ( ; iter != end; iter = list_next( iter ) ) + import_base_rules( class_module, list_item( iter ) ); + } + + return name; +} + + +static void free_class( void * xclass, void * data ) +{ + object_free( *(OBJECT * *)xclass ); +} + + +void class_done( void ) +{ + if ( classes ) + { + hashenumerate( classes, free_class, (void *)0 ); + hashdone( classes ); + classes = 0; + } +} |