Detect and report multiple #version directives

TRAC #12072
Signed-off-by: Shannon Woods
Signed-off-by: Daniel Koch

Author:    Nicolas Capens

git-svn-id: https://angleproject.googlecode.com/svn/trunk@206 736b8ea6-26fd-11df-bfd4-992fa37f6226

src/compiler/glslang.l

@@ -304,7 +304,7 @@ int PaParseStrings(char* argv[], int strLen[], int argc, TParseContext& parseCon
     cpp->PaArgv     = argv;
     cpp->PaArgc     = argc;
     cpp->PaStrLen   = strLen;
-    cpp->notAVersionToken = 0;
+    cpp->pastFirstStatement = 0;
     yylineno   = 1;
    
     if (*cpp->PaStrLen >= 0) {    

src/compiler/preprocessor/compile.h

@@ -78,7 +78,7 @@ struct CPPStruct_Rec {
     int mostRecentToken;        // Most recent token seen by the scanner
     InputSrc *currentInput;
     int previous_token;
-    int notAVersionToken;      // used to make sure that #version is the first token seen in the file, if present
+    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.  
      

src/compiler/preprocessor/cpp.c

@@ -638,7 +638,7 @@ static int CPPversion(yystypepp * yylvalpp)
 
     int token = cpp->currentInput->scan(cpp->currentInput, yylvalpp);
 
-    if (cpp->notAVersionToken == 1)
+    if (cpp->pastFirstStatement == 1)
         CPPShInfoLogMsg("#version must occur before any other statement in the program");
 
     if(token=='\n'){
@@ -734,7 +734,7 @@ int readCPPline(yystypepp * yylvalpp)
              }else{
                  CPPErrorToInfoLog("#else after a #else");
                  cpp->ifdepth=0;
-                 cpp->notAVersionToken = 1;
+                 cpp->pastFirstStatement = 1;
                  return 0;
              }
 		} else if (yylvalpp->sc_ident == elifAtom) {
@@ -787,7 +787,7 @@ int readCPPline(yystypepp * yylvalpp)
 		token = cpp->currentInput->scan(cpp->currentInput, yylvalpp);
 	}
         
-    cpp->notAVersionToken = !isVersion;
+    cpp->pastFirstStatement = 1;
 
     return token;
 } // readCPPline

src/compiler/preprocessor/scanner.c

@@ -120,7 +120,7 @@ int InitScanner(CPPStruct *cpp)
 
     cpp->currentInput = &eof_inputsrc;
     cpp->previous_token = '\n';
-    cpp->notAVersionToken = 0;
+    cpp->pastFirstStatement = 0;
 
     return 1;
 } // InitScanner
@@ -712,7 +712,7 @@ int yylex_CPP(char* buf, int maxSize)
         cpp->previous_token = token;
         // expand macros
         if (token == CPP_IDENTIFIER && MacroExpand(yylvalpp.sc_ident, &yylvalpp)) {
-            cpp->notAVersionToken = 1;
+            cpp->pastFirstStatement = 1;
             continue;
         }
         
@@ -720,13 +720,13 @@ int yylex_CPP(char* buf, int maxSize)
             continue;
           
         if (token == CPP_IDENTIFIER) {                
-            cpp->notAVersionToken = 1;
+            cpp->pastFirstStatement = 1;
             tokenString = GetStringOfAtom(atable,yylvalpp.sc_ident);
         } else if (token == CPP_FLOATCONSTANT||token == CPP_INTCONSTANT){             
-            cpp->notAVersionToken = 1;            
+            cpp->pastFirstStatement = 1;            
             tokenString = yylvalpp.symbol_name;
 		} else {            
-            cpp->notAVersionToken = 1;            
+            cpp->pastFirstStatement = 1;            
             tokenString = GetStringOfAtom(atable,token);
 	    }