Rename to cpp files and add dev builds of b2.

src/engine/class.cpp

@@ -0,0 +1,192 @@
+/*
+ * 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 "output.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 ) ) )
+        {
+            out_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
+    {
+        out_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;
+    }
+}