| 1 | // -*- c-basic-offset: 4 -*-
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| 2 | /*
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| 3 | * This file is part of the KDE libraries
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| 4 | * Copyright (C) 1999-2001 Harri Porten ([email protected])
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| 5 | * Copyright (C) 2001 Peter Kelly ([email protected])
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| 6 | * Copyright (C) 2003, 2006, 2007 Apple Inc.
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| 7 | *
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| 8 | * This library is free software; you can redistribute it and/or
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| 9 | * modify it under the terms of the GNU Library General Public
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| 10 | * License as published by the Free Software Foundation; either
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| 11 | * version 2 of the License, or (at your option) any later version.
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| 12 | *
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| 13 | * This library is distributed in the hope that it will be useful,
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| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 16 | * Library General Public License for more details.
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| 17 | *
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| 18 | * You should have received a copy of the GNU Library General Public License
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| 19 | * along with this library; see the file COPYING.LIB. If not, write to
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| 20 | * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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| 21 | * Boston, MA 02110-1301, USA.
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| 22 | *
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| 23 | */
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| 24 |
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| 25 | #include "config.h"
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| 26 | #include "Parser.h"
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| 27 |
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| 28 | #include "lexer.h"
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| 29 | #include <wtf/HashSet.h>
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| 30 | #include <wtf/Vector.h>
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| 31 |
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| 32 | extern int kjsyyparse();
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| 33 |
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| 34 | namespace KJS {
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| 35 |
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| 36 | Parser::Parser()
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| 37 | : m_sourceId(0)
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| 38 | {
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| 39 | }
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| 40 |
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| 41 | template <class ParsedNode>
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| 42 | PassRefPtr<ParsedNode> Parser::parse(const UString& sourceURL, int startingLineNumber,
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| 43 | const UChar* code, unsigned length,
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| 44 | int* sourceId, int* errLine, UString* errMsg)
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| 45 | {
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| 46 | m_sourceURL = sourceURL;
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| 47 | parse(startingLineNumber, code, length, sourceId, errLine, errMsg);
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| 48 | if (!m_sourceElements) {
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| 49 | m_sourceURL = UString();
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| 50 | return 0;
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| 51 | }
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| 52 | RefPtr<ParsedNode> node = new ParsedNode(m_sourceElements.release());
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| 53 | m_sourceURL = UString();
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| 54 | node->setLoc(startingLineNumber, m_lastLine);
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| 55 | return node.release();
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| 56 | }
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| 57 |
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| 58 | void Parser::parse(int startingLineNumber,
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| 59 | const UChar* code, unsigned length,
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| 60 | int* sourceId, int* errLine, UString* errMsg)
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| 61 | {
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| 62 | ASSERT(!m_sourceElements);
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| 63 |
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| 64 | if (errLine)
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| 65 | *errLine = -1;
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| 66 | if (errMsg)
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| 67 | *errMsg = 0;
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| 68 |
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| 69 | Lexer& lexer = KJS::lexer();
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| 70 |
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| 71 | lexer.setCode(startingLineNumber, code, length);
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| 72 | m_sourceId++;
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| 73 | if (sourceId)
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| 74 | *sourceId = m_sourceId;
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| 75 |
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| 76 | int parseError = kjsyyparse();
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| 77 | bool lexError = lexer.sawError();
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| 78 | lexer.clear();
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| 79 |
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| 80 | Node::clearNewNodes();
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| 81 |
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| 82 | if (parseError || lexError) {
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| 83 | if (errLine)
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| 84 | *errLine = lexer.lineNo();
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| 85 | if (errMsg)
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| 86 | *errMsg = "Parse error";
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| 87 | m_sourceElements.clear();
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| 88 | }
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| 89 | }
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| 90 |
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| 91 | Parser& parser()
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| 92 | {
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| 93 | ASSERT(JSLock::currentThreadIsHoldingLock());
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| 94 |
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| 95 | static Parser& staticParser = *new Parser;
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| 96 | return staticParser;
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| 97 | }
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| 98 |
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| 99 | } // namespace KJS
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