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tim |
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/* ANTLR Translator Generator |
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* Project led by Terence Parr at http://www.jGuru.com |
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* Software rights: http://www.antlr.org/license.html |
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* |
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* $Id: TreeParser.cpp,v 1.1 2005-12-02 15:38:02 tim Exp $ |
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*/ |
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#include <iostream> |
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#include "antlr/TreeParser.hpp" |
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#include "antlr/ASTNULLType.hpp" |
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#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE |
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namespace antlr { |
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#endif |
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/** The AST Null object; the parsing cursor is set to this when |
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* it is found to be null. This way, we can test the |
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* token type of a node without having to have tests for null |
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* everywhere. |
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*/ |
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RefAST TreeParser::ASTNULL(new ASTNULLType); |
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/** Parser error-reporting function can be overridden in subclass */ |
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void TreeParser::reportError(const RecognitionException& ex) |
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{ |
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ANTLR_USE_NAMESPACE(std)cerr << ex.toString().c_str() << ANTLR_USE_NAMESPACE(std)endl; |
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} |
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/** Parser error-reporting function can be overridden in subclass */ |
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void TreeParser::reportError(const ANTLR_USE_NAMESPACE(std)string& s) |
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{ |
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ANTLR_USE_NAMESPACE(std)cerr << "error: " << s.c_str() << ANTLR_USE_NAMESPACE(std)endl; |
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} |
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/** Parser warning-reporting function can be overridden in subclass */ |
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void TreeParser::reportWarning(const ANTLR_USE_NAMESPACE(std)string& s) |
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{ |
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ANTLR_USE_NAMESPACE(std)cerr << "warning: " << s.c_str() << ANTLR_USE_NAMESPACE(std)endl; |
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} |
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/** Procedure to write out an indent for traceIn and traceOut */ |
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void TreeParser::traceIndent() |
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{ |
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for( int i = 0; i < traceDepth; i++ ) |
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ANTLR_USE_NAMESPACE(std)cout << " "; |
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} |
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void TreeParser::traceIn(const char* rname, RefAST t) |
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{ |
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traceDepth++; |
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traceIndent(); |
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ANTLR_USE_NAMESPACE(std)cout << "> " << rname |
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<< "(" << (t ? t->toString().c_str() : "null") << ")" |
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<< ((inputState->guessing>0)?" [guessing]":"") |
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<< ANTLR_USE_NAMESPACE(std)endl; |
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} |
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void TreeParser::traceOut(const char* rname, RefAST t) |
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{ |
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traceIndent(); |
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ANTLR_USE_NAMESPACE(std)cout << "< " << rname |
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<< "(" << (t ? t->toString().c_str() : "null") << ")" |
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<< ((inputState->guessing>0)?" [guessing]":"") |
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<< ANTLR_USE_NAMESPACE(std)endl; |
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traceDepth--; |
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} |
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#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE |
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} |
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#endif |
