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ffe40d07da
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/steptalk/trunk@13926 72102866-910b-0410-8b05-ffd578937521
132 lines
3.2 KiB
Objective-C
132 lines
3.2 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 <StepTalk/STEngine.h>
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#import <StepTalk/STEnvironment.h>
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#import <StepTalk/STExterns.h>
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#import <StepTalk/STFunctions.h>
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#import <StepTalk/STLanguage.h>
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#import <StepTalk/STUndefinedObject.h>
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#import <Foundation/NSDictionary.h>
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#import <Foundation/NSException.h>
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NSZone *STMallocZone = NULL;
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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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STMallocZone = NSCreateZone(NSPageSize(),NSPageSize(),NO);
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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 the language used in files of type
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<var>fileType</var>
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*/
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+ (STEngine *) engineForFileType:(NSString *)fileType
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{
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STLanguage *language = [STLanguage languageForFileType:fileType];
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return [language engine];
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}
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/**
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Return a scripting engine for language with specified name.
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*/
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+ (STEngine *) engineForLanguageWithName:(NSString *)name
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{
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if(!name)
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{
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NSLog(@"No language name given");
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return NULL;
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}
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return [[STLanguage languageWithName:name] engine];
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}
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- (void)dealloc
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{
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RELEASE(defaultEnvironment);
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[super dealloc];
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}
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/** Return the default scripting environment for the engine. */
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- (STEnvironment *)defaultEnvironment
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{
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return defaultEnvironment;
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}
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/** Set the default scripting environment for the engine. */
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- (void) setDefaultEnvironment:(STEnvironment *)anEnvironment
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{
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ASSIGN(defaultEnvironment,anEnvironment);
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}
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/** Execude source code <var>code</var> in default scripting environment. */
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- (id) executeCode:(NSString *)code
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{
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return [self executeCode:code
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inEnvironment:defaultEnvironment];
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}
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/** Execude source code <var>code</var> in an environment <var>env</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) executeCode:(NSString *)code
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inEnvironment:(STEnvironment *)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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- (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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@end
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