pegasus/src/Pegasus/WQL/WQLParser.cpp - annotate

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1 karl 1.20 //%2006////////////////////////////////////////////////////////////////////////
2 mike 1.2 //
3 karl 1.12 // Copyright (c) 2000, 2001, 2002 BMC Software; Hewlett-Packard Development 4 // Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems. 5 // Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L.P.;
6 karl 1.11 // IBM Corp.; EMC Corporation, The Open Group.
7 karl 1.12 // Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.; 8 // IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group.
9 karl 1.16 // Copyright (c) 2005 Hewlett-Packard Development Company, L.P.; IBM Corp.; 10 // EMC Corporation; VERITAS Software Corporation; The Open Group.
11 karl 1.20 // Copyright (c) 2006 Hewlett-Packard Development Company, L.P.; IBM Corp.; 12 // EMC Corporation; Symantec Corporation; The Open Group.
13 mike 1.2 // 14 // Permission is hereby granted, free of charge, to any person obtaining a copy
15 kumpf 1.6 // of this software and associated documentation files (the "Software"), to 16 // deal in the Software without restriction, including without limitation the 17 // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
18 mike 1.2 // sell copies of the Software, and to permit persons to whom the Software is 19 // furnished to do so, subject to the following conditions: 20 //
21 kumpf 1.6 // THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN
22 mike 1.2 // ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED 23 // "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
24 kumpf 1.6 // LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR 25 // PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 26 // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
27 mike 1.2 // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 29 // 30 //============================================================================== 31 // 32 //%///////////////////////////////////////////////////////////////////////////// 33 34 #include <Pegasus/Common/Config.h>
35 kumpf 1.7 #include <Pegasus/Common/InternalException.h>
36 kumpf 1.4 #include <Pegasus/Common/Tracer.h>
37 kumpf 1.5 #include <Pegasus/Common/PegasusVersion.h>
38 mike 1.21 #include <Pegasus/Common/Mutex.h>
39 mike 1.2 #include <iostream> 40 #include "WQLParser.h" 41 #include "WQLParserState.h" 42 43 PEGASUS_USING_STD; 44 45 extern int WQL_parse();
46 kumpf 1.10 extern void WQL_restart (FILE *input_file);
47 mike 1.2 48 PEGASUS_NAMESPACE_BEGIN 49
50 karl 1.17 WQLParserState* globalParserState = 0;
51 humberto 1.13 static Mutex WQL_mutex;
52 mike 1.2 53 void WQLParser::parse(
54 mike 1.3 const char* text,
55 mike 1.2 WQLSelectStatement& statement) 56 {
57 kumpf 1.4 PEG_METHOD_ENTER(TRC_WQL,"WQLParser::parse");
58 humberto 1.13
59 karl 1.24 AutoMutex mtx(WQL_mutex);
60 kumpf 1.4
61 mike 1.3 if (!text)
62 kumpf 1.4 { 63 PEG_METHOD_EXIT();
64 karl 1.24 throw NullPointer();
65 kumpf 1.4 }
66 mike 1.3 67 statement.clear();
68 mike 1.2
69 karl 1.17 globalParserState = new WQLParserState;
70 mike 1.2 globalParserState->error = false; 71 globalParserState->text = text;
72 a.dunfey 1.22 globalParserState->textSize = (Uint32)(strlen(text) + 1);
73 mike 1.2 globalParserState->offset = 0; 74 globalParserState->statement = &statement; 75 76 WQL_parse(); 77 78 if (globalParserState->error) 79 {
80 karl 1.24 String errorMessage = globalParserState->errorMessage; 81 cleanup(); 82 delete globalParserState;
83 kumpf 1.4 PEG_METHOD_EXIT();
84 karl 1.24 throw ParseError(errorMessage);
85 mike 1.2 } 86 87 cleanup();
88 karl 1.17 delete globalParserState;
89 kumpf 1.4 PEG_METHOD_EXIT();
90 mike 1.2 } 91
92 mike 1.3 void WQLParser::parse(
93 mike 1.19 const Buffer& text,
94 mike 1.3 WQLSelectStatement& statement) 95 {
96 kumpf 1.4 PEG_METHOD_ENTER(TRC_WQL,"WQLParser::parse"); 97
98 kumpf 1.23 parse(text.getData(), statement);
99 mike 1.3
100 kumpf 1.4 PEG_METHOD_EXIT();
101 mike 1.3 } 102 103 void WQLParser::parse( 104 const String& text, 105 WQLSelectStatement& statement) 106 {
107 kumpf 1.4 PEG_METHOD_ENTER(TRC_WQL,"WQLParser::parse"); 108
109 kumpf 1.9 parse(text.getCString(), statement);
110 kumpf 1.4 111 PEG_METHOD_EXIT();
112 mike 1.3 } 113
114 mike 1.2 void WQLParser::cleanup() 115 {
116 kumpf 1.4 PEG_METHOD_ENTER(TRC_WQL,"WQLParser::cleanup"); 117
118 mike 1.2 Array<char*>& arr = globalParserState->outstandingStrings; 119 120 for (Uint32 i = 0, n = arr.size(); i < n; i++)
121 karl 1.24 delete [] arr[i];
122 mike 1.2 123 arr.clear();
124 kumpf 1.4 125 PEG_METHOD_EXIT();
126 mike 1.2 } 127 128 PEGASUS_NAMESPACE_END 129 130 PEGASUS_USING_PEGASUS; 131
132 kumpf 1.8 int WQL_error(const char* errorMessage)
133 mike 1.2 {
134 kumpf 1.4 PEG_METHOD_ENTER(TRC_WQL,"WQL_error"); 135
136 mike 1.2 globalParserState->error = true; 137 globalParserState->errorMessage = errorMessage;
138 kumpf 1.10 139 // 140 // flex does not automatically flush the input buffer in case of error 141 // 142 WQL_restart (0);
143 kumpf 1.4 144 PEG_METHOD_EXIT();
145 mike 1.2 return -1; 146 } 147 148 int WQLInput(char* buffer, int& numRead, int numRequested) 149 {
150 kumpf 1.4 PEG_METHOD_ENTER(TRC_WQL,"WQLInput");
151 mike 1.2 // 152 // Be sure to account for the null terminator (the size of the text will 153 // be one or more; this is fixed checked beforehand by WQLParser::parse()). 154 // 155 156 int remaining =
157 karl 1.24 globalParserState->textSize - globalParserState->offset - 1;
158 mike 1.2 159 if (remaining == 0) 160 {
161 karl 1.24 numRead = 0;
162 kumpf 1.4 PEG_METHOD_EXIT();
163 karl 1.24 return 0;
164 mike 1.2 } 165 166 if (remaining < numRequested)
167 karl 1.24 numRequested = remaining;
168 mike 1.2 169 memcpy(buffer,
170 karl 1.24 globalParserState->text + globalParserState->offset, 171 numRequested);
172 mike 1.2 173 globalParserState->offset += numRequested; 174 numRead = numRequested; 175
176 kumpf 1.4 PEG_METHOD_EXIT();
177 mike 1.2 return numRead; 178 }

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