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128 lines
4.2 KiB
C++
128 lines
4.2 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express oqr
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is the JavaScript 2 Prototype.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the
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* terms of the GNU Public License (the "GPL"), in which case the
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* provisions of the GPL are applicable instead of those above.
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* If you wish to allow use of your version of this file only
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* under the terms of the GPL and not to allow others to use your
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* version of this file under the NPL, indicate your decision by
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* deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL. If you do not delete
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* the provisions above, a recipient may use your version of this
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* file under either the NPL or the GPL.
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*/
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#include <string>
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#include <iterator>
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#define iter string::const_iterator
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namespace JavaScript {
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namespace ICodeASM {
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enum TokenEstimation {
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/* guess at tokentype, based on first character of token */
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teEOF,
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teUnknown,
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teIllegal,
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teComma,
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teNumeric,
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teAlpha,
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teString,
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teNotARegister
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};
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enum TokenType {
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/* verified token type */
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ttUndetermined,
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ttLabel,
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ttInstruction,
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ttRegister,
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ttRegisterList,
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ttNotARegister,
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ttString,
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ttNumber,
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ttOffsetKeyword
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};
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struct ICodeParseException {
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ICodeParserException (string aMsg, iter aPos = 0)
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: msg(aMsg), pos(aPos) {}
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string msg;
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iter aPos;
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};
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struct TokenLocation {
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TokenLocation () : begin(0), end(0), estimate(teIllegal),
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type(ttUndetermined) {}
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iter begin, end;
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TokenEstimation estimate;
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TokenType type;
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};
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union AnyOperand {
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/* eww */
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double asDouble;
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uint32 asUInt32;
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Register asRegister;
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bool asBool;
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ArgumentList *asArgumentList;
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struct {
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iter begin, end;
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} asString;
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};
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struct StatementNode {
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uint icodeID;
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AnyOperand operand[3];
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}
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class ICodeParser
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{
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private:
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uint mMaxRegister;
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std::vector<StatementNode *> mStatementNodes;
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std::map<string *, uint32> mLabels;
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public:
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void ParseSourceFromString (const string source);
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TokenLocation SeekTokenStart (iter begin, iter end);
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iter ParseStatement (iter begin, iter end);
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iter ParseInstruction (uint icodeID, iter start, iter end);
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iter ParseArgumentListOperand (iter start, iter end, AnyOperand *rval);
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iter ParseBinaryOpOperand (iter start, iter end, AnyOperand *rval);
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iter ParseBoolOperand (iter start, iter end, AnyOperand *rval);
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iter ParseDoubleOperand (iter start, iter end, AnyOperand *rval);
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iter ParseICodeModuleOperand (iter start, iter end, AnyOperand *rval);
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iter ParseJSClassOperand (iter start, iter end, AnyOperand *rval);
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iter ParseJSStringOperand (iter start, iter end, AnyOperand *rval);
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iter ParseJSFunctionOperand (iter start, iter end, AnyOperand *rval);
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iter ParseJSTypeOperand (iter start, iter end, AnyOperand *rval);
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iter ParseLabelOperand (iter start, iter end, AnyOperand *rval);
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iter ParseUInt32Operand (iter start, iter end, AnyOperand *rval);
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iter ParseRegisterOperand (iter start, iter end, AnyOperand *rval);
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iter ParseStringAtomOperand (iter start, iter end, AnyOperand *rval);
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};
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}
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}
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