kc3-lang/angle/src/compiler/preprocessor/compile.h

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• Author : daniel@transgaming.com
  Date : 2011-01-26 17:32:26
  Hash : e9874058
  Message : Fix issues with preprocessor on very malformed shaders Trac #15236,#15237,#15238,#15239 Error out instead of continued processing when we already know the preprocessor directives are bungled. Generally be more careful about the order in which cpp->elsetracker and cpp->ifdepth are checked/operated on. Validate all accesses of cpp->elsedepth to ensure no out of bounds accesses occur. Also slipped in a few indentation/spacing fixes. Signed-off-by: Nicolas Capens git-svn-id: https://angleproject.googlecode.com/svn/trunk@540 736b8ea6-26fd-11df-bfd4-992fa37f6226

• src/compiler/preprocessor/compile.h

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  //
  // compile.h
  //
  
  #if !defined(__COMPILE_H)
  #define __COMPILE_H 1
  
  int InitCPPStruct(void);
  
  typedef struct Options_Rec{
      const char *profileString;
      int ErrorMode;
      int Quiet;
  	
      // Debug The Compiler options:
      int DumpAtomTable;
  } Options;
  
  #define MAX_IF_NESTING  64
  struct CPPStruct_Rec {
      // Public members
      SourceLoc *pLastSourceLoc;  // Set at the start of each statement by the tree walkers
      Options options;            // Compile options and parameters
  
      // Private members
      SourceLoc lastSourceLoc;
  
      // Scanner data:
  
      SourceLoc *tokenLoc;        // Source location of most recent token seen by the scanner
      int mostRecentToken;        // Most recent token seen by the scanner
      InputSrc *currentInput;
      int previous_token;
      int pastFirstStatement;     // used to make sure that #version is the first statement seen in the file, if present
      
  	void *pC;                   // storing the parseContext of the compile object in cpp.  
       
      // Private members:
      SourceLoc ltokenLoc;
  	int ifdepth;                //current #if-#else-#endif nesting in the cpp.c file (pre-processor)    
      int elsedepth[MAX_IF_NESTING];//Keep a track of #if depth..Max allowed is 64.
      int elsetracker;            //#if-#else and #endif constructs...Counter.
      const char *ErrMsg;
      int CompileError;           //Indicate compile error when #error, #else,#elif mismatch.
  
      //
      // Globals used to communicate between PaParseStrings() and yy_input()and 
      // also across the files.(gen_glslang.cpp and scanner.c)
      //
      int PaWhichStr;             // which string we're parsing
      const int* PaStrLen;        // array of lengths of the PaArgv strings
      int PaArgc;                 // count of strings in the array
      const char* const* PaArgv;  // our array of strings to parse    
      unsigned int tokensBeforeEOF : 1;
  };
  
  #endif // !defined(__COMPILE_H)