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https://github.com/gnustep/libs-steptalk.git
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b4e1c926df
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/steptalk/trunk@21697 72102866-910b-0410-8b05-ffd578937521
126 lines
3.3 KiB
Objective-C
126 lines
3.3 KiB
Objective-C
/**
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STEngine.m
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Scripting engine
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Copyright (c) 2002 Free Software Foundation
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Written by: Stefan Urbanek <urbanek@host.sk>
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Date: 2000
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This file is part of the StepTalk project.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#import "STEngine.h"
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#import "STEnvironment.h"
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#import "STExterns.h"
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#import "STFunctions.h"
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#import "STLanguageManager.h"
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#import "STMethod.h"
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#import "STUndefinedObject.h"
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#import <Foundation/NSDictionary.h>
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#import <Foundation/NSException.h>
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#import <Foundation/NSString.h>
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#import <Foundation/NSZone.h>
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NSZone *STMallocZone = (NSZone *)nil;
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void _STInitMallocZone(void)
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{
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if(!STMallocZone)
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{
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/* FIXME: do some testing whether there should be YES or NO */
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STMallocZone = NSCreateZone(NSPageSize(),NSPageSize(),YES);
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}
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}
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@implementation STEngine
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+ (void)initialize
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{
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_STInitMallocZone();
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if(!STNil)
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{
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STNil = (STUndefinedObject *)NSAllocateObject([STUndefinedObject class],
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0, STMallocZone);
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}
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}
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/**
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Return a scripting engine for language with specified name. The engine
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is get from default language manager.
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*/
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+ (STEngine *) engineForLanguage:(NSString *)name
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{
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STLanguageManager *manager = [STLanguageManager defaultManager];
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if(!name)
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{
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[NSException raise:@"STConversationException"
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format:@"Unspecified language for a new engine."];
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return nil;
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}
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return [manager createEngineForLanguage:name];
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}
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+ (STEngine *) engineForLanguageWithName:(NSString *)name
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{
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NSLog(@"%@ %@ is depreciated, use %@ instead",
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[self className], NSStringFromSelector(_cmd), @"engineForLanguage:");
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return [self engineForLanguage:name];
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}
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/** Interpret source code <var>code</var> in a context <var>context</var>.
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This is the method, that has to be implemented by those who are writing
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a language engine.
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<override-subclass />
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*/
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- (id)interpretScript:(NSString *)script
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inContext:(STContext *)context
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{
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[self subclassResponsibility:_cmd];
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return nil;
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}
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- (BOOL)understandsCode:(NSString *)code
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{
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[self subclassResponsibility:_cmd];
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return NO;
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}
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- (STMethod *)methodFromSource:(NSString *)sourceString
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forReceiver:(id)receiver
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inContext:(STContext *)env;
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{
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[self subclassResponsibility:_cmd];
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return nil;
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}
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- (id) executeMethod:(id <STMethod>)aMethod
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forReceiver:(id)anObject
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withArguments:(NSArray *)args
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inContext:(STContext *)env;
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{
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[self subclassResponsibility:_cmd];
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return nil;
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}
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@end
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