1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 #include <precomp.h> 23 #include "cx_c_pp.hxx" 24 25 26 27 // NOT FULLY DECLARED SERVICES 28 #include "c_dealer.hxx" 29 #include <tokens/parseinc.hxx> 30 #include <x_parse.hxx> 31 #include "all_toks.hxx" 32 33 34 namespace cpp 35 { 36 37 Context_Preprocessor::Context_Preprocessor( TkpContext & i_rFollowUpContext ) 38 : Cx_Base(&i_rFollowUpContext), 39 pContext_Parent(&i_rFollowUpContext), 40 pContext_PP_MacroParams( 0 ), 41 pContext_PP_Definition( new Context_PP_Definition(i_rFollowUpContext) ) 42 { 43 pContext_PP_MacroParams = new Context_PP_MacroParams(*pContext_PP_Definition); 44 } 45 46 void 47 Context_Preprocessor::ReadCharChain( CharacterSource & io_rText ) 48 { 49 jumpOverWhite( io_rText ); 50 jumpToWhite( io_rText ); 51 const char * sPP_Keyword = io_rText.CutToken(); 52 if ( strcmp(sPP_Keyword, "define") == 0 ) 53 ReadDefine(io_rText); 54 else 55 ReadDefault(io_rText); 56 } 57 58 void 59 Context_Preprocessor::AssignDealer( Distributor & o_rDealer ) 60 { 61 Cx_Base::AssignDealer(o_rDealer); 62 pContext_PP_MacroParams->AssignDealer(o_rDealer); 63 pContext_PP_Definition->AssignDealer(o_rDealer); 64 } 65 66 void 67 Context_Preprocessor::ReadDefault( CharacterSource & io_rText ) 68 { 69 int o_rCount_BackslashedLineBreaks = 0; 70 jumpToEol(io_rText,o_rCount_BackslashedLineBreaks); 71 for ( ; o_rCount_BackslashedLineBreaks > 0; --o_rCount_BackslashedLineBreaks ) 72 Dealer().Deal_Eol(); 73 74 if (io_rText.CurChar() != NULCH) 75 jumpOverEol(io_rText); 76 io_rText.CutToken(); 77 Dealer().Deal_Eol(); 78 SetNewToken(0); 79 SetFollowUpContext( pContext_Parent ); 80 } 81 82 void 83 Context_Preprocessor::ReadDefine( CharacterSource & io_rText ) 84 { 85 jumpOverWhite( io_rText ); 86 io_rText.CutToken(); 87 88 char cNext = '\0'; 89 for ( cNext = io_rText.CurChar(); 90 static_cast<UINT8>(cNext) > 32 AND cNext != '('; 91 cNext = io_rText.MoveOn() ) 92 { } 93 94 bool bMacro = cNext == '('; 95 96 if ( NOT bMacro ) 97 { 98 SetNewToken( new Tok_DefineName(io_rText.CutToken()) ); 99 SetFollowUpContext( pContext_PP_Definition.Ptr() ); 100 } 101 else 102 { 103 SetNewToken( new Tok_MacroName(io_rText.CutToken()) ); 104 io_rText.MoveOn(); 105 io_rText.CutToken(); 106 SetFollowUpContext( pContext_PP_MacroParams.Ptr() ); 107 } 108 } 109 110 111 Context_PP_MacroParams::Context_PP_MacroParams( Cx_Base & i_rFollowUpContext ) 112 : Cx_Base(&i_rFollowUpContext), 113 pContext_PP_Definition(&i_rFollowUpContext) 114 { 115 } 116 117 void 118 Context_PP_MacroParams::ReadCharChain( CharacterSource & io_rText ) 119 { 120 uintt nLen; 121 122 jumpOverWhite( io_rText ); 123 // KORR_FUTURE Handling line breaks within macro parameters: 124 char cSeparator = jumpTo( io_rText, ',', ')' ); 125 csv_assert( cSeparator != 0 ); 126 127 static char cBuf[500]; 128 // KORR_FUTURE, make it still safer, here: 129 strcpy( cBuf, io_rText.CutToken() ); // SAFE STRCPY (#100211# - checked) 130 for ( nLen = strlen(cBuf); 131 nLen > 0 AND cBuf[nLen-1] < 33; 132 --nLen ) 133 { } 134 cBuf[nLen] = '\0'; 135 SetNewToken( new Tok_MacroParameter(cBuf) ); 136 137 io_rText.MoveOn(); 138 io_rText.CutToken(); 139 if ( cSeparator == ',') 140 SetFollowUpContext( this ); 141 else // Must be ')' 142 SetFollowUpContext( pContext_PP_Definition ); 143 } 144 145 Context_PP_Definition::Context_PP_Definition( TkpContext & i_rFollowUpContext ) 146 : Cx_Base(&i_rFollowUpContext), 147 pContext_Parent(&i_rFollowUpContext) 148 { 149 } 150 151 void 152 Context_PP_Definition::ReadCharChain( CharacterSource & io_rText ) 153 { 154 int o_rCount_BackslashedLineBreaks = 0; 155 jumpToEol(io_rText,o_rCount_BackslashedLineBreaks); 156 for ( ; o_rCount_BackslashedLineBreaks > 0; --o_rCount_BackslashedLineBreaks ) 157 Dealer().Deal_Eol(); 158 SetNewToken( new Tok_PreProDefinition(io_rText.CutToken()) ); 159 if (io_rText.CurChar() != NULCH) 160 jumpOverEol(io_rText); 161 Dealer().Deal_Eol(); 162 } 163 164 165 } // namespace cpp 166 167 168 169 170 171 172 173 174 175