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/**
STCompiler.h
Bytecode compiler. Generates STExecutableCode from source code.
Copyright (c) 2002 Free Software Foundation
Written by: Stefan Urbanek <urbanek@host.sk>
This file is part of the StepTalk project.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#import <Foundation/NSObject.h>
#import <Foundation/NSGeometry.h>
#import <Foundation/NSRange.h>
@class STCompiledScript;
@class STCompiledCode;
@class STCompiledMethod;
@class STEnvironment;
@class STScriptObject;
@class STSourceReader;
@class STCExpression;
@class STCMethod;
@class STCPrimary;
@class STCStatements;
@class STCompiler;
@class NSMutableData;
@class NSMutableArray;
@protocol STScriptObject;
/*" Parser context information "*/
typedef struct _STParserContext
{
STCompiler *compiler;
STSourceReader *reader;
} STParserContext;
/*" Get compiler from parser context "*/
#define STParserContextGetCompiler(context)\
(((STParserContext *)context)->compiler)
/*" Get source reader from parser context "*/
#define STParserContextGetReader(context)\
(((STParserContext *)context)->reader)
/*" Initialize parser context "*/
#define STParserContextInit(context,aCompiler,aReader) \
do { \
((STParserContext *)context)->compiler = aCompiler; \
((STParserContext *)context)->reader = aReader; \
} while(0)
@interface STCompiler:NSObject
{
STEnvironment *environment;
STSourceReader *reader;
STParserContext context;
STCompiledScript *resultScript;
STCompiledMethod *resultMethod;
NSMutableData *byteCodes;
NSMutableArray *tempVars;
NSMutableArray *externVars;
NSMutableArray *receiverVars;
NSMutableArray *namedReferences;
NSMutableArray *literals;
STScriptObject *receiver;
BOOL isSingleMethod;
NSUInteger stackSize; /* Required stack size */
NSUInteger stackPos; /* Current stack pointer */
NSUInteger tempsSize; /* Required temp space */
NSUInteger tempsCount; /* Actual temp space */
NSUInteger bcpos; /* Bytecode position */
Class stringLiteralClass; /* default: NSMutableString */
Class arrayLiteralClass; /* default: NSMutableArray */
Class characterLiteralClass; /* default: NSString */
Class intNumberLiteralClass; /* default: NSNumber */
Class realNumberLiteralClass; /* default: NSNumber */
Class symbolLiteralClass; /* default: NSString */
}
+ compilerWithEnvironment:(STEnvironment *)env;
- initWithEnvironment:(STEnvironment *)env;
/*" Environment "*/
- (void)setEnvironment:(STEnvironment *)env;
- (STSourceReader *)sourceReader;
/*" Compilation "*/
- (STCompiledScript *)compileString:(NSString *)aString;
- (STCompiledMethod *)compileMethodFromSource:(NSString *)aString
forReceiver:(STScriptObject *)receiver;
/*
- (NSMutableArray *)compileString:(NSString *)string;
- (NSMutableArray *)compileString:(NSString *)string range:(NSRange) range;
*/
/*" Literals "*/
- (Class)intNumberLiteralClass;
- (Class)realNumberLiteralClass;
- (Class)stringLiteralClass;
- (Class)arrayLiteralClass;
- (Class)symbolLiteralClass;
- (void)setStringLiteralClass:(Class)aClass;
- (void)setArrayLiteralClass:(Class)aClass;
- (void)setSymbolLiteralClass:(Class)aClass;
- (void)setIntNumberLiteralClass:(Class)aClass;
- (void)setRealNumberLiteralClass:(Class)aClass;
- (void)setReceiverVariables:(NSArray *)vars;
- (void)addTempVariable:(NSString *)varName;
- (BOOL)beginScript;
@end
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