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File: [Pegasus] / pegasus / src / Pegasus / WQL / WQLParser.cpp
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Revision: 1.11, Wed Oct 22 13:26:14 2003 UTC (20 years, 8 months ago) by karl Branch: MAIN CVS Tags: local, RELEASE_2_4_FC_CANDIDATE_1, RELEASE_2_3_2-testfreeze, RELEASE_2_3_2-root, RELEASE_2_3_2-releasesnapshot, RELEASE_2_3_2-branch-freeze, RELEASE_2_3_2-branch, RELEASE_2_3_1-root, RELEASE_2_3_1-branch, RELEASE_2_3_0-root, RELEASE_2_3_0-branch, POST_LICENSE_UPDATE_2003, MONITOR_CONSOLIDATION_2_5_BRANCH, CQL_2_5_BRANCH Changes since 1.10: +5 -3 lines PEP 55 Update license on source files to current license text and date |
//%2003//////////////////////////////////////////////////////////////////////// // // Copyright (c) 2000, 2001, 2002 BMC Software, Hewlett-Packard Development // Company, L. P., IBM Corp., The Open Group, Tivoli Systems. // Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L. P.; // IBM Corp.; EMC Corporation, The Open Group. // // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to // deal in the Software without restriction, including without limitation the // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or // sell copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // // THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN // ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED // "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT // LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR // PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. // //============================================================================== // // Author: Mike Brasher (mbrasher@bmc.com) // // Modified By: // //%///////////////////////////////////////////////////////////////////////////// #include <Pegasus/Common/Config.h> #include <Pegasus/Common/InternalException.h> #include <Pegasus/Common/Destroyer.h> #include <Pegasus/Common/Tracer.h> #include <Pegasus/Common/PegasusVersion.h> #include <iostream> #include "WQLParser.h" #include "WQLParserState.h" PEGASUS_USING_STD; extern int WQL_parse(); extern void WQL_restart (FILE *input_file); PEGASUS_NAMESPACE_BEGIN WQLParserState* globalParserState = 0; void WQLParser::parse( const char* text, WQLSelectStatement& statement) { PEG_METHOD_ENTER(TRC_WQL,"WQLParser::parse"); if (!text) { PEG_METHOD_EXIT(); throw NullPointer(); } statement.clear(); globalParserState = new WQLParserState; globalParserState->error = false; globalParserState->text = text; globalParserState->textSize = strlen(text) + 1; globalParserState->offset = 0; globalParserState->statement = &statement; WQL_parse(); if (globalParserState->error) { String errorMessage = globalParserState->errorMessage; cleanup(); delete globalParserState; PEG_METHOD_EXIT(); throw ParseError(errorMessage); } cleanup(); delete globalParserState; PEG_METHOD_EXIT(); } void WQLParser::parse( const Array<Sint8>& text, WQLSelectStatement& statement) { PEG_METHOD_ENTER(TRC_WQL,"WQLParser::parse"); if (text.size() == 0 || text[text.size() - 1] != '\0') { PEG_METHOD_EXIT(); throw MissingNullTerminator(); } parse(text.getData(), statement); PEG_METHOD_EXIT(); } void WQLParser::parse( const String& text, WQLSelectStatement& statement) { PEG_METHOD_ENTER(TRC_WQL,"WQLParser::parse"); parse(text.getCString(), statement); PEG_METHOD_EXIT(); } void WQLParser::cleanup() { PEG_METHOD_ENTER(TRC_WQL,"WQLParser::cleanup"); Array<char*>& arr = globalParserState->outstandingStrings; for (Uint32 i = 0, n = arr.size(); i < n; i++) delete [] arr[i]; arr.clear(); PEG_METHOD_EXIT(); } PEGASUS_NAMESPACE_END PEGASUS_USING_PEGASUS; int WQL_error(const char* errorMessage) { PEG_METHOD_ENTER(TRC_WQL,"WQL_error"); globalParserState->error = true; globalParserState->errorMessage = errorMessage; // // flex does not automatically flush the input buffer in case of error // WQL_restart (0); PEG_METHOD_EXIT(); return -1; } int WQLInput(char* buffer, int& numRead, int numRequested) { PEG_METHOD_ENTER(TRC_WQL,"WQLInput"); // // Be sure to account for the null terminator (the size of the text will // be one or more; this is fixed checked beforehand by WQLParser::parse()). // int remaining = globalParserState->textSize - globalParserState->offset - 1; if (remaining == 0) { numRead = 0; PEG_METHOD_EXIT(); return 0; } if (remaining < numRequested) numRequested = remaining; memcpy(buffer, globalParserState->text + globalParserState->offset, numRequested); globalParserState->offset += numRequested; numRead = numRequested; PEG_METHOD_EXIT(); return numRead; }
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