gecko-dev/js/js2/icodeasm.h
rogerl%netscape.com 9250f428f3 Fixes to support ICodeModule operand type (via name in global object) and
TRUE/FALSE/NULL/CLASS instructions.
2001-01-25 23:34:33 +00:00

160 lines
5.5 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express oqr
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is the JavaScript 2 Prototype.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the
* terms of the GNU Public License (the "GPL"), in which case the
* provisions of the GPL are applicable instead of those above.
* If you wish to allow use of your version of this file only
* under the terms of the GPL and not to allow others to use your
* version of this file under the NPL, indicate your decision by
* deleting the provisions above and replace them with the notice
* and other provisions required by the GPL. If you do not delete
* the provisions above, a recipient may use your version of this
* file under either the NPL or the GPL.
*/
#ifdef _WIN32 // Microsoft Visual C++ 6.0 whines about name lengths over 255 getting truncated in the browser database
#pragma warning( disable : 4786)
#endif
#ifndef icodeasm_h___
#define icodeasm_h___
#include <string>
#include <iterator>
#include "vmtypes.h"
#include "jstypes.h"
#include "interpreter.h"
namespace JavaScript {
namespace ICodeASM {
enum OperandType {
otNone = 0,
otArgumentList,
otExprNodeKind,
otBool,
otDouble,
otICodeModule,
otJSClass,
otJSString,
otJSFunction,
otJSType,
otLabel,
otUInt32,
otRegister,
otStringAtom
};
struct AnyOperand {
OperandType type;
int64 data;
/*void *data;*/
};
struct StatementNode {
uint icodeID;
AnyOperand operand[4];
};
class ICodeParser
{
private:
ICodeParser(const ICodeParser&); /* No copy constructor */
Interpreter::Context *mCx;
uint32 mInstructionCount;
VM::LabelList mLabels; /* contains both named *and* unnamed labels */
typedef std::map<const char *, VM::Label*> LabelMap;
LabelMap mNamedLabels;
public:
uint32 mMaxRegister;
VM::InstructionStream *mInstructions;
public:
ICodeParser (Interpreter::Context *aCx) : mCx(aCx), mInstructions(0) {}
void parseSourceFromString (const string8 &source);
/* operand parse functions; These functions take care of finding
* the start of the token with |SeekTokenStart|, and checking the
* "estimation" (explicit checking takes care of |begin| == |end|,
* aka EOF, because EOF is a token estimate.) Once the start of the
* token is found, and it is of the expected type, the actual parsing is
* carried out by one of the general purpose parse functions.
*/
string8_citer
parseArgumentListOperand (string8_citer begin, string8_citer end,
VM::ArgumentList **rval);
string8_citer
parseExprNodeKindOperand (string8_citer begin, string8_citer end,
JavaScript::ExprNode::Kind *rval);
string8_citer
parseBoolOperand (string8_citer begin, string8_citer end,
bool *rval);
string8_citer
parseDoubleOperand (string8_citer begin, string8_citer end,
double *rval);
string8_citer
parseICodeModuleOperand (string8_citer begin, string8_citer end,
VM::ICodeModule **rval);
string8_citer
parseJSClassOperand (string8_citer begin, string8_citer end,
JSTypes::JSType **rval);
string8_citer
parseJSStringOperand (string8_citer begin, string8_citer end,
JSTypes::JSString **rval);
string8_citer
parseJSFunctionOperand (string8_citer begin, string8_citer end,
string8 **rval);
string8_citer
parseJSTypeOperand (string8_citer begin, string8_citer end,
JSTypes::JSType **rval);
string8_citer
parseLabelOperand (string8_citer begin, string8_citer end,
VM::Label **rval);
string8_citer
parseUInt32Operand (string8_citer begin, string8_citer end,
uint32 *rval);
string8_citer
parseRegisterOperand (string8_citer begin, string8_citer end,
JSTypes::Register *rval);
string8_citer
parseStringAtomOperand (string8_citer begin, string8_citer end,
StringAtom **rval);
/* "high level" parse functions */
string8_citer
parseInstruction (uint icodeID, string8_citer start,
string8_citer end);
string8_citer
parseNextStatement (string8_citer begin, string8_citer end);
};
}
}
#endif /* #ifndef icodeasm_h___ */