From 1d5c727bbabf80b0d92dd3fb3822e476a42f347f Mon Sep 17 00:00:00 2001 From: Michal Krol Date: Fri, 18 Mar 2005 12:18:00 +0000 Subject: glslang flex and bison sources: flex glslang.l bison -t -v -d glslang.y mv glslang.tab.c Gen_glslang_tab.cpp (shouldn't be .c?) mv glslang.tab.h glslang_tab.h --- src/mesa/shader/slang/MachineIndependent/glslang.l | 614 ++++++ src/mesa/shader/slang/MachineIndependent/glslang.y | 2009 ++++++++++++++++++++ 2 files changed, 2623 insertions(+) create mode 100644 src/mesa/shader/slang/MachineIndependent/glslang.l create mode 100644 src/mesa/shader/slang/MachineIndependent/glslang.y (limited to 'src/mesa/shader') diff --git a/src/mesa/shader/slang/MachineIndependent/glslang.l b/src/mesa/shader/slang/MachineIndependent/glslang.l new file mode 100644 index 0000000000..f6cd3ca663 --- /dev/null +++ b/src/mesa/shader/slang/MachineIndependent/glslang.l @@ -0,0 +1,614 @@ +/* +// +//Copyright (C) 2002-2005 3Dlabs Inc. Ltd. +//All rights reserved. +// +//Redistribution and use in source and binary forms, with or without +//modification, are permitted provided that the following conditions +//are met: +// +// Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// +// Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following +// disclaimer in the documentation and/or other materials provided +// with the distribution. +// +// Neither the name of 3Dlabs Inc. Ltd. nor the names of its +// contributors may be used to endorse or promote products derived +// from this software without specific prior written permission. +// +//THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +//"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +//LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS +//FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +//COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +//INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, +//BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +//LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER +//CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +//LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN +//ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +//POSSIBILITY OF SUCH DAMAGE. +// +*/ +/* Based on +ANSI C grammar, Lex specification + +In 1985, Jeff Lee published this Lex specification together with a Yacc +grammar for the April 30, 1985 ANSI C draft. Tom Stockfisch reposted +both to net.sources in 1987; that original, as mentioned in the answer +to question 17.25 of the comp.lang.c FAQ, can be ftp'ed from ftp.uu.net, +file usenet/net.sources/ansi.c.grammar.Z. + +I intend to keep this version as close to the current C Standard grammar +as possible; please let me know if you discover discrepancies. + +Jutta Degener, 1995 +*/ + +D [0-9] +L [a-zA-Z_] +H [a-fA-F0-9] +E [Ee][+-]?{D}+ +O [0-7] + +%option nounput +%{ +#include +#include +#include "ParseHelper.h" +#include "glslang_tab.h" + +/* windows only pragma */ +#ifdef _MSC_VER +#pragma warning(disable : 4102) +#endif + +int yy_input(char* buf, int max_size); +TSourceLoc yylineno; + +#ifdef _WIN32 + extern int yyparse(TParseContext&); + #define YY_DECL int yylex(YYSTYPE* pyylval, TParseContext& parseContext) +#else + extern int yyparse(void*); + #define YY_DECL int yylex(YYSTYPE* pyylval, void* parseContextLocal) + #define parseContext (*((TParseContext*)(parseContextLocal))) +#endif + +#define YY_INPUT(buf,result,max_size) (result = yy_input(buf, max_size)) + +%} + +%option noyywrap +%option never-interactive +%option outfile="Gen_glslang.cpp" +%x FIELDS + + +%% +<*>"//"[^\n]*"\n" { /* ?? carriage and/or line-feed? */ }; + +"attribute" { pyylval->lex.line = yylineno; return(ATTRIBUTE); } +"const" { pyylval->lex.line = yylineno; return(CONST_QUAL); } +"uniform" { pyylval->lex.line = yylineno; return(UNIFORM); } +"varying" { pyylval->lex.line = yylineno; return(VARYING); } + +"break" { pyylval->lex.line = yylineno; return(BREAK); } +"continue" { pyylval->lex.line = yylineno; return(CONTINUE); } +"do" { pyylval->lex.line = yylineno; return(DO); } +"for" { pyylval->lex.line = yylineno; return(FOR); } +"while" { pyylval->lex.line = yylineno; return(WHILE); } + +"if" { pyylval->lex.line = yylineno; return(IF); } +"else" { pyylval->lex.line = yylineno; return(ELSE); } + +"in" { pyylval->lex.line = yylineno; return(IN_QUAL); } +"out" { pyylval->lex.line = yylineno; return(OUT_QUAL); } +"inout" { pyylval->lex.line = yylineno; return(INOUT_QUAL); } + +"float" { pyylval->lex.line = yylineno; parseContext.lexAfterType = true; return(FLOAT_TYPE); } +"int" { pyylval->lex.line = yylineno; parseContext.lexAfterType = true; return(INT_TYPE); } +"void" { pyylval->lex.line = yylineno; parseContext.lexAfterType = true; return(VOID_TYPE); } +"bool" { pyylval->lex.line = yylineno; parseContext.lexAfterType = true; return(BOOL_TYPE); } +"true" { pyylval->lex.line = yylineno; pyylval->lex.b = true; return(BOOLCONSTANT); } +"false" { pyylval->lex.line = yylineno; pyylval->lex.b = false; return(BOOLCONSTANT); } + +"discard" { pyylval->lex.line = yylineno; return(DISCARD); } +"return" { pyylval->lex.line = yylineno; return(RETURN); } + +"mat2" { pyylval->lex.line = yylineno; parseContext.lexAfterType = true; return(MATRIX2); } +"mat3" { pyylval->lex.line = yylineno; parseContext.lexAfterType = true; return(MATRIX3); } +"mat4" { pyylval->lex.line = yylineno; parseContext.lexAfterType = true; return(MATRIX4); } + +"vec2" { pyylval->lex.line = yylineno; parseContext.lexAfterType = true; return (VEC2); } +"vec3" { pyylval->lex.line = yylineno; parseContext.lexAfterType = true; return (VEC3); } +"vec4" { pyylval->lex.line = yylineno; parseContext.lexAfterType = true; return (VEC4); } +"ivec2" { pyylval->lex.line = yylineno; parseContext.lexAfterType = true; return (IVEC2); } +"ivec3" { pyylval->lex.line = yylineno; parseContext.lexAfterType = true; return (IVEC3); } +"ivec4" { pyylval->lex.line = yylineno; parseContext.lexAfterType = true; return (IVEC4); } +"bvec2" { pyylval->lex.line = yylineno; parseContext.lexAfterType = true; return (BVEC2); } +"bvec3" { pyylval->lex.line = yylineno; parseContext.lexAfterType = true; return (BVEC3); } +"bvec4" { pyylval->lex.line = yylineno; parseContext.lexAfterType = true; return (BVEC4); } + +"sampler1D" { pyylval->lex.line = yylineno; parseContext.lexAfterType = true; return SAMPLER1D; } +"sampler2D" { pyylval->lex.line = yylineno; parseContext.lexAfterType = true; return SAMPLER2D; } +"sampler3D" { pyylval->lex.line = yylineno; parseContext.lexAfterType = true; return SAMPLER3D; } +"samplerCube" { pyylval->lex.line = yylineno; parseContext.lexAfterType = true; return SAMPLERCUBE; } +"sampler1DShadow" { pyylval->lex.line = yylineno; parseContext.lexAfterType = true; return SAMPLER1DSHADOW; } +"sampler2DShadow" { pyylval->lex.line = yylineno; parseContext.lexAfterType = true; return SAMPLER2DSHADOW; } + +"struct" { pyylval->lex.line = yylineno; return(STRUCT); } + +"asm" { PaReservedWord(); return 0; } + +"class" { PaReservedWord(); return 0; } +"union" { PaReservedWord(); return 0; } +"enum" { PaReservedWord(); return 0; } +"typedef" { PaReservedWord(); return 0; } +"template" { PaReservedWord(); return 0; } +"this" { PaReservedWord(); return 0; } +"packed" { PaReservedWord(); return 0; } + +"goto" { PaReservedWord(); return 0; } +"switch" { PaReservedWord(); return 0; } +"default" { PaReservedWord(); return 0; } + +"inline" { PaReservedWord(); return 0; } +"noinline" { PaReservedWord(); return 0; } +"volatile" { PaReservedWord(); return 0; } +"public" { PaReservedWord(); return 0; } +"static" { PaReservedWord(); return 0; } +"extern" { PaReservedWord(); return 0; } +"external" { PaReservedWord(); return 0; } +"interface" { PaReservedWord(); return 0; } + +"long" { PaReservedWord(); return 0; } +"short" { PaReservedWord(); return 0; } +"double" { PaReservedWord(); return 0; } +"half" { PaReservedWord(); return 0; } +"fixed" { PaReservedWord(); return 0; } +"unsigned" { PaReservedWord(); return 0; } + +"input" { PaReservedWord(); return 0; } +"output" { PaReservedWord(); return 0; } + +"hvec2" { PaReservedWord(); return 0; } +"hvec3" { PaReservedWord(); return 0; } +"hvec4" { PaReservedWord(); return 0; } +"fvec2" { PaReservedWord(); return 0; } +"fvec3" { PaReservedWord(); return 0; } +"fvec4" { PaReservedWord(); return 0; } +"dvec2" { PaReservedWord(); return 0; } +"dvec3" { PaReservedWord(); return 0; } +"dvec4" { PaReservedWord(); return 0; } + +"sampler2DRect" { PaReservedWord(); return 0; } +"sampler3DRect" { PaReservedWord(); return 0; } +"sampler2DRectShadow" { PaReservedWord(); return 0; } + +"sizeof" { PaReservedWord(); return 0; } +"cast" { PaReservedWord(); return 0; } + +"namespace" { PaReservedWord(); return 0; } +"using" { PaReservedWord(); return 0; } + +{L}({L}|{D})* { + pyylval->lex.line = yylineno; + pyylval->lex.string = NewPoolTString(yytext); + return PaIdentOrType(*pyylval->lex.string, parseContext, pyylval->lex.symbol); +} + +0[xX]{H}+ { pyylval->lex.line = yylineno; pyylval->lex.i = strtol(yytext, 0, 0); return(INTCONSTANT); } +0{O}+ { pyylval->lex.line = yylineno; pyylval->lex.i = strtol(yytext, 0, 0); return(INTCONSTANT); } +0{D}+ { pyylval->lex.line = yylineno; parseContext.error(yylineno, "Invalid Octal number.", yytext, "", ""); parseContext.recover(); return 0;} +{D}+ { pyylval->lex.line = yylineno; pyylval->lex.i = strtol(yytext, 0, 0); return(INTCONSTANT); } + +{D}+{E} { pyylval->lex.line = yylineno; pyylval->lex.f = static_cast(atof(yytext)); return(FLOATCONSTANT); } +{D}+"."{D}*({E})? { pyylval->lex.line = yylineno; pyylval->lex.f = static_cast(atof(yytext)); return(FLOATCONSTANT); } +"."{D}+({E})? { pyylval->lex.line = yylineno; pyylval->lex.f = static_cast(atof(yytext)); return(FLOATCONSTANT); } + +"/*" { int ret = PaParseComment(pyylval->lex.line, parseContext); if (!ret) return ret; } + +"+=" { pyylval->lex.line = yylineno; return(ADD_ASSIGN); } +"-=" { pyylval->lex.line = yylineno; return(SUB_ASSIGN); } +"*=" { pyylval->lex.line = yylineno; return(MUL_ASSIGN); } +"/=" { pyylval->lex.line = yylineno; return(DIV_ASSIGN); } +"%=" { pyylval->lex.line = yylineno; return(MOD_ASSIGN); } +"<<=" { pyylval->lex.line = yylineno; return(LEFT_ASSIGN); } +">>=" { pyylval->lex.line = yylineno; return(RIGHT_ASSIGN); } +"&=" { pyylval->lex.line = yylineno; return(AND_ASSIGN); } +"^=" { pyylval->lex.line = yylineno; return(XOR_ASSIGN); } +"|=" { pyylval->lex.line = yylineno; return(OR_ASSIGN); } + +"++" { pyylval->lex.line = yylineno; return(INC_OP); } +"--" { pyylval->lex.line = yylineno; return(DEC_OP); } +"&&" { pyylval->lex.line = yylineno; return(AND_OP); } +"||" { pyylval->lex.line = yylineno; return(OR_OP); } +"^^" { pyylval->lex.line = yylineno; return(XOR_OP); } +"<=" { pyylval->lex.line = yylineno; return(LE_OP); } +">=" { pyylval->lex.line = yylineno; return(GE_OP); } +"==" { pyylval->lex.line = yylineno; return(EQ_OP); } +"!=" { pyylval->lex.line = yylineno; return(NE_OP); } +"<<" { pyylval->lex.line = yylineno; return(LEFT_OP); } +">>" { pyylval->lex.line = yylineno; return(RIGHT_OP); } +";" { pyylval->lex.line = yylineno; parseContext.lexAfterType = false; return(SEMICOLON); } +("{"|"<%") { pyylval->lex.line = yylineno; parseContext.lexAfterType = false; return(LEFT_BRACE); } +("}"|"%>") { pyylval->lex.line = yylineno; return(RIGHT_BRACE); } +"," { pyylval->lex.line = yylineno; if (parseContext.inTypeParen) parseContext.lexAfterType = false; return(COMMA); } +":" { pyylval->lex.line = yylineno; return(COLON); } +"=" { pyylval->lex.line = yylineno; parseContext.lexAfterType = false; return(EQUAL); } +"(" { pyylval->lex.line = yylineno; parseContext.lexAfterType = false; parseContext.inTypeParen = true; return(LEFT_PAREN); } +")" { pyylval->lex.line = yylineno; parseContext.inTypeParen = false; return(RIGHT_PAREN); } +("["|"<:") { pyylval->lex.line = yylineno; return(LEFT_BRACKET); } +("]"|":>") { pyylval->lex.line = yylineno; return(RIGHT_BRACKET); } +"." { BEGIN(FIELDS); return(DOT); } +"!" { pyylval->lex.line = yylineno; return(BANG); } +"-" { pyylval->lex.line = yylineno; return(DASH); } +"~" { pyylval->lex.line = yylineno; return(TILDE); } +"+" { pyylval->lex.line = yylineno; return(PLUS); } +"*" { pyylval->lex.line = yylineno; return(STAR); } +"/" { pyylval->lex.line = yylineno; return(SLASH); } +"%" { pyylval->lex.line = yylineno; return(PERCENT); } +"<" { pyylval->lex.line = yylineno; return(LEFT_ANGLE); } +">" { pyylval->lex.line = yylineno; return(RIGHT_ANGLE); } +"|" { pyylval->lex.line = yylineno; return(VERTICAL_BAR); } +"^" { pyylval->lex.line = yylineno; return(CARET); } +"&" { pyylval->lex.line = yylineno; return(AMPERSAND); } +"?" { pyylval->lex.line = yylineno; return(QUESTION); } + +{L}({L}|{D})* { +BEGIN(INITIAL); + pyylval->lex.line = yylineno; + pyylval->lex.string = NewPoolTString(yytext); + return FIELD_SELECTION; } +[ \t\v\f\r] {} + +[ \t\v\n\f\r] { } +<*><> { (&parseContext)->AfterEOF = true; yy_delete_buffer(YY_CURRENT_BUFFER); yyterminate();} +<*>. { parseContext.infoSink.info << "FLEX: Unknown char " << yytext << "\n"; + return 0; } + +%% + + +//Including Pre-processor. +extern "C" { + #include "./preprocessor/preprocess.h" +} + +// +// The YY_INPUT macro just calls this. Maybe this could be just put into +// the macro directly. +// + +int yy_input(char* buf, int max_size) +{ + char *char_token =NULL; + int len; + + if ((len = yylex_CPP(buf, max_size)) == 0) + return 0; + if (len >= max_size) + YY_FATAL_ERROR( "input buffer overflow, can't enlarge buffer because scanner uses REJECT" ); + + buf[len] = ' '; + return len+1; +} + + +// +// Parse an array of strings using yyparse. We set up globals used by +// yywrap. +// +// Returns 0 for success, as per yyparse(). +// +int PaParseStrings(char* argv[], int strLen[], int argc, TParseContext& parseContextLocal) +{ + int argv0len; + ScanFromString(argv[0]); + + //Storing the Current Compiler Parse context into the cpp structure. + cpp->pC = (void*)&parseContextLocal; + + if (!argv || argc == 0 || !argv[0]) + return 1; + + if (!strLen) { + argv0len = (int) strlen(argv[0]); + strLen = &argv0len; + } + yyrestart(0); + (&parseContextLocal)->AfterEOF = false; + cpp->PaWhichStr = 0; + cpp->PaArgv = argv; + cpp->PaArgc = argc; + cpp->PaStrLen = strLen; + yylineno = 1; + + if (*cpp->PaStrLen >= 0) { + int ret; + #ifdef _WIN32 + ret = yyparse(parseContextLocal); + #else + ret = yyparse((void*)(&parseContextLocal)); + #endif + if (cpp->CompileError == 1 || parseContextLocal.recoveredFromError || parseContextLocal.numErrors > 0) + return 1; + else + return 0; + } + else + return 0; +} + +void yyerror(char *s) +{ + if (((TParseContext *)cpp->pC)->AfterEOF) { + if (cpp->tokensBeforeEOF == 1) { + GlobalParseContext->error(yylineno, "syntax error", "pre-mature EOF", s, ""); + GlobalParseContext->recover(); + } + } else { + GlobalParseContext->error(yylineno, "syntax error", yytext, s, ""); + GlobalParseContext->recover(); + } +} + +void PaReservedWord() +{ + GlobalParseContext->error(yylineno, "Reserved word.", yytext, "", ""); + GlobalParseContext->recover(); +} + +int PaIdentOrType(TString& id, TParseContext& parseContextLocal, TSymbol*& symbol) +{ + symbol = parseContextLocal.symbolTable.find(id); + if (parseContextLocal.lexAfterType == false && symbol && symbol->isVariable()) { + TVariable* variable = static_cast(symbol); + if (variable->isUserType()) { + parseContextLocal.lexAfterType = true; + return TYPE_NAME; + } + } + + return IDENTIFIER; +} + +int PaParseComment(int &lineno, TParseContext& parseContextLocal) +{ + int transitionFlag = 0; + int nextChar; + + while (transitionFlag != 2) { + nextChar = yyinput(); + if (nextChar == '\n') + lineno++; + switch (nextChar) { + case '*' : + transitionFlag = 1; + break; + case '/' : /* if star is the previous character, then it is the end of comment */ + if (transitionFlag == 1) { + return 1 ; + } + break; + case EOF : + /* Raise error message here */ + parseContextLocal.error(yylineno, "End of shader found before end of comment.", "", "", ""); + GlobalParseContext->recover(); + return YY_NULL; + default : /* Any other character will be a part of the comment */ + transitionFlag = 0; + } + } + return 1; +} + +extern "C" { + +void CPPDebugLogMsg(const char *msg) +{ + ((TParseContext *)cpp->pC)->infoSink.debug.message(EPrefixNone, msg); +} + +void CPPWarningToInfoLog(const char *msg) +{ + ((TParseContext *)cpp->pC)->infoSink.info.message(EPrefixWarning, msg, yylineno); +} + +void CPPShInfoLogMsg(const char *msg) +{ + ((TParseContext *)cpp->pC)->error(yylineno,"", "",msg,""); + GlobalParseContext->recover(); +} + +void CPPErrorToInfoLog(char *msg) +{ + ((TParseContext *)cpp->pC)->error(yylineno,"syntax error", "",msg,""); + GlobalParseContext->recover(); +} + +void SetLineNumber(int line) +{ + yylineno &= ~SourceLocLineMask; + yylineno |= line; +} + +void SetStringNumber(int string) +{ + yylineno = (string << SourceLocStringShift) | (yylineno & SourceLocLineMask); +} + +int GetStringNumber(void) +{ + return yylineno >> 16; +} + +int GetLineNumber(void) +{ + return yylineno & SourceLocLineMask; +} + +void IncLineNumber(void) +{ + if ((yylineno & SourceLocLineMask) <= SourceLocLineMask) + ++yylineno; +} + +void DecLineNumber(void) +{ + if ((yylineno & SourceLocLineMask) > 0) + --yylineno; +} + +void HandlePragma(const char **tokens, int numTokens) +{ + if (!strcmp(tokens[0], "optimize")) { + if (numTokens != 4) { + CPPShInfoLogMsg("optimize pragma syntax is incorrect"); + return; + } + + if (strcmp(tokens[1], "(")) { + CPPShInfoLogMsg("\"(\" expected after 'optimize' keyword"); + return; + } + + if (!strcmp(tokens[2], "on")) + ((TParseContext *)cpp->pC)->contextPragma.optimize = true; + else if (!strcmp(tokens[2], "off")) + ((TParseContext *)cpp->pC)->contextPragma.optimize = false; + else { + CPPShInfoLogMsg("\"on\" or \"off\" expected after '(' for 'optimize' pragma"); + return; + } + + if (strcmp(tokens[3], ")")) { + CPPShInfoLogMsg("\")\" expected to end 'optimize' pragma"); + return; + } + } else if (!strcmp(tokens[0], "debug")) { + if (numTokens != 4) { + CPPShInfoLogMsg("debug pragma syntax is incorrect"); + return; + } + + if (strcmp(tokens[1], "(")) { + CPPShInfoLogMsg("\"(\" expected after 'debug' keyword"); + return; + } + + if (!strcmp(tokens[2], "on")) + ((TParseContext *)cpp->pC)->contextPragma.debug = true; + else if (!strcmp(tokens[2], "off")) + ((TParseContext *)cpp->pC)->contextPragma.debug = false; + else { + CPPShInfoLogMsg("\"on\" or \"off\" expected after '(' for 'debug' pragma"); + return; + } + + if (strcmp(tokens[3], ")")) { + CPPShInfoLogMsg("\")\" expected to end 'debug' pragma"); + return; + } + } else { + /* + // implementation specific pragma + // use ((TParseContext *)cpp->pC)->contextPragma.pragmaTable to store the information about pragma + // For now, just ignore the pragma that the implementation cannot recognize + // An Example of one such implementation for a pragma that has a syntax like + // #pragma pragmaname(pragmavalue) + // This implementation stores the current pragmavalue against the pragma name in pragmaTable. + if (numTokens == 4 && !strcmp(tokens[1], "(") && !strcmp(tokens[3], ")")) { + TPragmaTable& pragmaTable = ((TParseContext *)cpp->pC)->contextPragma.pragmaTable; + TPragmaTable::iterator iter; + iter = pragmaTable.find(TString(tokens[0])); + if (iter != pragmaTable.end()) { + iter->second = tokens[2]; + } else { + pragmaTable[tokens[0]] = tokens[2]; + } + } + */ + } +} + +void StoreStr(char *string) +{ + TString strSrc; + strSrc = TString(string); + + ((TParseContext *)cpp->pC)->HashErrMsg = ((TParseContext *)cpp->pC)->HashErrMsg + " " + strSrc; +} + +const char* GetStrfromTStr(void) +{ + cpp->ErrMsg = (((TParseContext *)cpp->pC)->HashErrMsg).c_str(); + return cpp->ErrMsg; +} + +void ResetTString(void) +{ + ((TParseContext *)cpp->pC)->HashErrMsg = ""; +} + +TBehavior GetBehavior(const char* behavior) +{ + if (!strcmp("require", behavior)) + return EBhRequire; + else if (!strcmp("enable", behavior)) + return EBhEnable; + else if (!strcmp("disable", behavior)) + return EBhDisable; + else if (!strcmp("warn", behavior)) + return EBhWarn; + else { + CPPShInfoLogMsg((TString("behavior '") + behavior + "' is not supported").c_str()); + return EBhDisable; + } +} + +void updateExtensionBehavior(const char* extName, const char* behavior) +{ + TBehavior behaviorVal = GetBehavior(behavior); + TMap:: iterator iter; + TString msg; + + // special cased for all extension + if (!strcmp(extName, "all")) { + if (behaviorVal == EBhRequire || behaviorVal == EBhEnable) { + CPPShInfoLogMsg("extension 'all' cannot have 'require' or 'enable' behavior"); + return; + } else { + for (iter = ((TParseContext *)cpp->pC)->extensionBehavior.begin(); iter != ((TParseContext *)cpp->pC)->extensionBehavior.end(); ++iter) + iter->second = behaviorVal; + } + } else { + iter = ((TParseContext *)cpp->pC)->extensionBehavior.find(TString(extName)); + if (iter == ((TParseContext *)cpp->pC)->extensionBehavior.end()) { + switch (behaviorVal) { + case EBhRequire: + CPPShInfoLogMsg((TString("extension '") + extName + "' is not supported").c_str()); + break; + case EBhEnable: + case EBhWarn: + case EBhDisable: + msg = TString("extension '") + extName + "' is not supported"; + ((TParseContext *)cpp->pC)->infoSink.info.message(EPrefixWarning, msg.c_str(), yylineno); + break; + } + return; + } else + iter->second = behaviorVal; + } +} + +} + +void setInitialState() +{ + yy_start = 1; +} diff --git a/src/mesa/shader/slang/MachineIndependent/glslang.y b/src/mesa/shader/slang/MachineIndependent/glslang.y new file mode 100644 index 0000000000..d2dc1db376 --- /dev/null +++ b/src/mesa/shader/slang/MachineIndependent/glslang.y @@ -0,0 +1,2009 @@ +// +//Copyright (C) 2002-2005 3Dlabs Inc. Ltd. +//All rights reserved. +// +//Redistribution and use in source and binary forms, with or without +//modification, are permitted provided that the following conditions +//are met: +// +// Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// +// Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following +// disclaimer in the documentation and/or other materials provided +// with the distribution. +// +// Neither the name of 3Dlabs Inc. Ltd. nor the names of its +// contributors may be used to endorse or promote products derived +// from this software without specific prior written permission. +// +//THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +//"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +//LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS +//FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +//COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +//INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, +//BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +//LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER +//CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +//LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN +//ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +//POSSIBILITY OF SUCH DAMAGE. +// + +/** + * This is bison grammar and production code for parsing the OpenGL 2.0 shading + * languages. + */ +%{ + +/* Based on: +ANSI C Yacc grammar + +In 1985, Jeff Lee published his Yacc grammar (which is accompanied by a +matching Lex specification) for the April 30, 1985 draft version of the +ANSI C standard. Tom Stockfisch reposted it to net.sources in 1987; that +original, as mentioned in the answer to question 17.25 of the comp.lang.c +FAQ, can be ftp'ed from ftp.uu.net, file usenet/net.sources/ansi.c.grammar.Z. + +I intend to keep this version as close to the current C Standard grammar as +possible; please let me know if you discover discrepancies. + +Jutta Degener, 1995 +*/ + +#include "SymbolTable.h" +#include "ParseHelper.h" +#include "../Public/ShaderLang.h" + +#ifdef _WIN32 + #define YYPARSE_PARAM parseContext + #define YYPARSE_PARAM_DECL TParseContext& + #define YY_DECL int yylex(YYSTYPE* pyylval, TParseContext& parseContext) + #define YYLEX_PARAM parseContext +#else + #define YYPARSE_PARAM parseContextLocal + #define parseContext (*((TParseContext*)(parseContextLocal))) + #define YY_DECL int yylex(YYSTYPE* pyylval, void* parseContextLocal) + #define YYLEX_PARAM (void*)(parseContextLocal) + extern void yyerror(char*); +#endif + +#define FRAG_VERT_ONLY(S, L) { \ + if (parseContext.language != EShLangFragment && \ + parseContext.language != EShLangVertex) { \ + parseContext.error(L, " supported in vertex/fragment shaders only ", S, "", ""); \ + parseContext.recover(); \ + } \ +} + +#define VERTEX_ONLY(S, L) { \ + if (parseContext.language != EShLangVertex) { \ + parseContext.error(L, " supported in vertex shaders only ", S, "", ""); \ + parseContext.recover(); \ + } \ +} + +#define FRAG_ONLY(S, L) { \ + if (parseContext.language != EShLangFragment) { \ + parseContext.error(L, " supported in fragment shaders only ", S, "", ""); \ + parseContext.recover(); \ + } \ +} + +#define PACK_ONLY(S, L) { \ + if (parseContext.language != EShLangPack) { \ + parseContext.error(L, " supported in pack shaders only ", S, "", ""); \ + parseContext.recover(); \ + } \ +} + +#define UNPACK_ONLY(S, L) { \ + if (parseContext.language != EShLangUnpack) { \ + parseContext.error(L, " supported in unpack shaders only ", S, "", ""); \ + parseContext.recover(); \ + } \ +} + +#define PACK_UNPACK_ONLY(S, L) { \ + if (parseContext.language != EShLangUnpack && \ + parseContext.language != EShLangPack) { \ + parseContext.error(L, " supported in pack/unpack shaders only ", S, "", ""); \ + parseContext.recover(); \ + } \ +} +%} +%union { + struct { + TSourceLoc line; + union { + TString *string; + float f; + int i; + bool b; + }; + TSymbol* symbol; + } lex; + struct { + TSourceLoc line; + TOperator op; + union { + TIntermNode* intermNode; + TIntermNodePair nodePair; + TIntermTyped* intermTypedNode; + TIntermAggregate* intermAggregate; + }; + union { + TPublicType type; + TQualifier qualifier; + TFunction* function; + TParameter param; + TTypeLine typeLine; + TTypeList* typeList; + }; + } interm; +} + +%{ +#ifndef _WIN32 + extern int yylex(YYSTYPE*, void*); +#endif +%} + +%pure_parser /* Just in case is called from multiple threads */ +%expect 1 /* One shift reduce conflict because of if | else */ +%token ATTRIBUTE CONST_QUAL BOOL_TYPE FLOAT_TYPE INT_TYPE +%token BREAK CONTINUE DO ELSE FOR IF DISCARD RETURN +%token BVEC2 BVEC3 BVEC4 IVEC2 IVEC3 IVEC4 VEC2 VEC3 VEC4 +%token MATRIX2 MATRIX3 MATRIX4 IN_QUAL OUT_QUAL INOUT_QUAL UNIFORM VARYING +%token STRUCT VOID_TYPE WHILE +%token SAMPLER1D SAMPLER2D SAMPLER3D SAMPLERCUBE SAMPLER1DSHADOW SAMPLER2DSHADOW + +%token IDENTIFIER TYPE_NAME FLOATCONSTANT INTCONSTANT BOOLCONSTANT +%token FIELD_SELECTION +%token LEFT_OP RIGHT_OP +%token INC_OP DEC_OP LE_OP GE_OP EQ_OP NE_OP +%token AND_OP OR_OP XOR_OP MUL_ASSIGN DIV_ASSIGN ADD_ASSIGN +%token MOD_ASSIGN LEFT_ASSIGN RIGHT_ASSIGN AND_ASSIGN XOR_ASSIGN OR_ASSIGN +%token SUB_ASSIGN + +%token LEFT_PAREN RIGHT_PAREN LEFT_BRACKET RIGHT_BRACKET LEFT_BRACE RIGHT_BRACE DOT +%token COMMA COLON EQUAL SEMICOLON BANG DASH TILDE PLUS STAR SLASH PERCENT +%token LEFT_ANGLE RIGHT_ANGLE VERTICAL_BAR CARET AMPERSAND QUESTION + +%type assignment_operator constructor_identifier unary_operator +%type variable_identifier primary_expression postfix_expression +%type expression integer_expression assignment_expression +%type unary_expression multiplicative_expression additive_expression +%type relational_expression equality_expression +%type conditional_expression constant_expression +%type logical_or_expression logical_xor_expression logical_and_expression +%type shift_expression and_expression exclusive_or_expression inclusive_or_expression +%type function_call initializer condition conditionopt + +%type translation_unit function_definition +%type statement simple_statement +%type statement_list compound_statement +%type declaration_statement selection_statement expression_statement +%type declaration external_declaration +%type for_init_statement compound_statement_no_new_scope +%type selection_rest_statement for_rest_statement +%type iteration_statement jump_statement statement_no_new_scope +%type single_declaration init_declarator_list + +%type parameter_declaration parameter_declarator parameter_type_specifier +%type parameter_qualifier + +%type type_qualifier fully_specified_type type_specifier +%type struct_specifier +%type struct_declarator +%type struct_declarator_list struct_declaration struct_declaration_list +%type function_header function_declarator function_identifier +%type function_header_with_parameters function_call_header +%type function_call_header_with_parameters function_call_header_no_parameters function_call_generic function_prototype + +%start translation_unit +%% + +variable_identifier + : IDENTIFIER { + // The symbol table search was done in the lexical phase + const TSymbol* symbol = $1.symbol; + const TVariable* variable; + if (symbol == 0) { + parseContext.error($1.line, "undeclared identifier", $1.string->c_str(), ""); + parseContext.recover(); + TType type(EbtFloat); + TVariable* fakeVariable = new TVariable($1.string, type); + parseContext.symbolTable.insert(*fakeVariable); + variable = fakeVariable; + } else { + // This identifier can only be a variable type symbol + if (! symbol->isVariable()) { + parseContext.error($1.line, "variable expected", $1.string->c_str(), ""); + parseContext.recover(); + } + variable = static_cast(symbol); + } + + // don't delete $1.string, it's used by error recovery, and the pool + // pop will reclaim the memory + + if (variable->getType().getQualifier() == EvqConst ) { + constUnion* constArray = variable->getConstPointer(); + TType t(variable->getType()); + $$ = parseContext.intermediate.addConstantUnion(constArray, t, $1.line); + } else + $$ = parseContext.intermediate.addSymbol(variable->getUniqueId(), + variable->getName(), + variable->getType(), $1.line); + } + ; + +primary_expression + : variable_identifier { + $$ = $1; + } + | INTCONSTANT { + // + // INT_TYPE is only 16-bit plus sign bit for vertex/fragment shaders, + // check for overflow for constants + // + if (abs($1.i) >= (1 << 16)) { + parseContext.error($1.line, " integer constant overflow", "", ""); + parseContext.recover(); + } + constUnion *unionArray = new constUnion[1]; + unionArray->iConst = $1.i; + $$ = parseContext.intermediate.addConstantUnion(unionArray, TType(EbtInt, EvqConst), $1.line); + } + | FLOATCONSTANT { + constUnion *unionArray = new constUnion[1]; + unionArray->fConst = $1.f; + $$ = parseContext.intermediate.addConstantUnion(unionArray, TType(EbtFloat, EvqConst), $1.line); + } + | BOOLCONSTANT { + constUnion *unionArray = new constUnion[1]; + unionArray->bConst = $1.b; + $$ = parseContext.intermediate.addConstantUnion(unionArray, TType(EbtBool, EvqConst), $1.line); + } + | LEFT_PAREN expression RIGHT_PAREN { + $$ = $2; + } + ; + +postfix_expression + : primary_expression { + $$ = $1; + } + | postfix_expression LEFT_BRACKET integer_expression RIGHT_BRACKET { + if (!$1->isArray() && !$1->isMatrix() && !$1->isVector()) { + if ($1->getAsSymbolNode()) + parseContext.error($2.line, " left of '[' is not of type array, matrix, or vector ", $1->getAsSymbolNode()->getSymbol().c_str(), ""); + else + parseContext.error($2.line, " left of '[' is not of type array, matrix, or vector ", "expression", ""); + parseContext.recover(); + } + if ($1->getType().getQualifier() == EvqConst && !$1->isArray() && $3->getQualifier() == EvqConst) { + if ($1->isVector()) { // constant folding for vectors + TVectorFields fields; + fields.num = 1; + fields.offsets[0] = $3->getAsConstantUnion()->getUnionArrayPointer()->iConst; // need to do it this way because v.xy sends fields integer array + $$ = parseContext.addConstVectorNode(fields, $1, $2.line); + } else if ($1->isMatrix()) { // constant folding for matrices + $$ = parseContext.addConstMatrixNode($3->getAsConstantUnion()->getUnionArrayPointer()->iConst, $1, $2.line); + } + } else { + if ($3->getQualifier() == EvqConst) { + if (($1->isVector() || $1->isMatrix()) && $1->getType().getNominalSize() <= $3->getAsConstantUnion()->getUnionArrayPointer()->iConst && !$1->isArray() ) { + parseContext.error($2.line, "", "[", "field selection out of range '%d'", $3->getAsConstantUnion()->getUnionArrayPointer()->iConst); + parseContext.recover(); + } else { + if ($1->isArray()) { + if ($1->getType().getArraySize() == 0) { + if ($1->getType().getMaxArraySize() <= $3->getAsConstantUnion()->getUnionArrayPointer()->iConst) { + if (parseContext.arraySetMaxSize($1->getAsSymbolNode(), $1->getTypePointer(), $3->getAsConstantUnion()->getUnionArrayPointer()->iConst, true, $2.line)) + parseContext.recover(); + } else { + if (parseContext.arraySetMaxSize($1->getAsSymbolNode(), $1->getTypePointer(), 0, false, $2.line)) + parseContext.recover(); + } + } else if ( $3->getAsConstantUnion()->getUnionArrayPointer()->iConst >= $1->getType().getArraySize()) { + parseContext.error($2.line, "", "[", "array index out of range '%d'", $3->getAsConstantUnion()->getUnionArrayPointer()->iConst); + parseContext.recover(); + } + } + $$ = parseContext.intermediate.addIndex(EOpIndexDirect, $1, $3, $2.line); + } + } else { + if ($1->isArray() && $1->getType().getArraySize() == 0) { + parseContext.error($2.line, "", "[", "array must be redeclared with a size before being indexed with a variable"); + parseContext.recover(); + } + + $$ = parseContext.intermediate.addIndex(EOpIndexIndirect, $1, $3, $2.line); + } + } + if ($$ == 0) { + constUnion *unionArray = new constUnion[1]; + unionArray->fConst = 0.0; + $$ = parseContext.intermediate.addConstantUnion(unionArray, TType(EbtFloat, EvqConst), $2.line); + } else if ($1->isArray()) { + if ($1->getType().getStruct()) + $$->setType(TType($1->getType().getStruct(), $1->getType().getTypeName())); + else + $$->setType(TType($1->getBasicType(), EvqTemporary, $1->getNominalSize(), $1->isMatrix())); + } else if ($1->isMatrix() && $1->getType().getQualifier() == EvqConst) + $$->setType(TType($1->getBasicType(), EvqConst, $1->getNominalSize())); + else if ($1->isMatrix()) + $$->setType(TType($1->getBasicType(), EvqTemporary, $1->getNominalSize())); + else if ($1->isVector() && $1->getType().getQualifier() == EvqConst) + $$->setType(TType($1->getBasicType(), EvqConst)); + else if ($1->isVector()) + $$->setType(TType($1->getBasicType(), EvqTemporary)); + else + $$->setType($1->getType()); + } + | function_call { + $$ = $1; + } + | postfix_expression DOT FIELD_SELECTION { + if ($1->isArray()) { + parseContext.error($3.line, "cannot apply dot operator to an array", ".", ""); + parseContext.recover(); + } + + if ($1->isVector()) { + TVectorFields fields; + if (! parseContext.parseVectorFields(*$3.string, $1->getNominalSize(), fields, $3.line)) { + fields.num = 1; + fields.offsets[0] = 0; + parseContext.recover(); + } + + if ($1->getType().getQualifier() == EvqConst) { // constant folding for vector fields + $$ = parseContext.addConstVectorNode(fields, $1, $3.line); + if ($$ == 0) { + parseContext.recover(); + $$ = $1; + } + else + $$->setType(TType($1->getBasicType(), EvqConst, (int) (*$3.string).size())); + } else { + if (fields.num == 1) { + constUnion *unionArray = new constUnion[1]; + unionArray->iConst = fields.offsets[0]; + TIntermTyped* index = parseContext.intermediate.addConstantUnion(unionArray, TType(EbtInt, EvqConst), $3.line); + $$ = parseContext.intermediate.addIndex(EOpIndexDirect, $1, index, $2.line); + $$->setType(TType($1->getBasicType())); + } else { + TString vectorString = *$3.string; + TIntermTyped* index = parseContext.intermediate.addSwizzle(fields, $3.line); + $$ = parseContext.intermediate.addIndex(EOpVectorSwizzle, $1, index, $2.line); + $$->setType(TType($1->getBasicType(),EvqTemporary, (int) vectorString.size())); + } + } + } else if ($1->isMatrix()) { + TMatrixFields fields; + if (! parseContext.parseMatrixFields(*$3.string, $1->getNominalSize(), fields, $3.line)) { + fields.wholeRow = false; + fields.wholeCol = false; + fields.row = 0; + fields.col = 0; + parseContext.recover(); + } + + if (fields.wholeRow || fields.wholeCol) { + parseContext.error($2.line, " non-scalar fields not implemented yet", ".", ""); + parseContext.recover(); + constUnion *unionArray = new constUnion[1]; + unionArray->iConst = 0; + TIntermTyped* index = parseContext.intermediate.addConstantUnion(unionArray, TType(EbtInt, EvqConst), $3.line); + $$ = parseContext.intermediate.addIndex(EOpIndexDirect, $1, index, $2.line); + $$->setType(TType($1->getBasicType(), EvqTemporary, $1->getNominalSize())); + } else { + constUnion *unionArray = new constUnion[1]; + unionArray->iConst = fields.col * $1->getNominalSize() + fields.row; + TIntermTyped* index = parseContext.intermediate.addConstantUnion(unionArray, TType(EbtInt, EvqConst), $3.line); + $$ = parseContext.intermediate.addIndex(EOpIndexDirect, $1, index, $2.line); + $$->setType(TType($1->getBasicType())); + } + } else if ($1->getBasicType() == EbtStruct) { + bool fieldFound = false; + TTypeList* fields = $1->getType().getStruct(); + if (fields == 0) { + parseContext.error($2.line, "structure has no fields", "Internal Error", ""); + parseContext.recover(); + $$ = $1; + } else { + unsigned int i; + for (i = 0; i < fields->size(); ++i) { + if ((*fields)[i].type->getFieldName() == *$3.string) { + fieldFound = true; + break; + } + } + if (fieldFound) { + if ($1->getType().getQualifier() == EvqConst) { + $$ = parseContext.addConstStruct(*$3.string, $1, $2.line); + if ($$ == 0) { + parseContext.recover(); + $$ = $1; + } + else { + $$->setType(*(*fields)[i].type); + // change the qualifier of the return type, not of the structure field + // as the structure definition is shared between various structures. + $$->getTypePointer()->changeQualifier(EvqConst); + } + } else { + constUnion *unionArray = new constUnion[1]; + unionArray->iConst = i; + TIntermTyped* index = parseContext.intermediate.addConstantUnion(unionArray, TType(EbtInt, EvqConst), $3.line); + $$ = parseContext.intermediate.addIndex(EOpIndexDirectStruct, $1, index, $2.line); + $$->setType(*(*fields)[i].type); + } + } else { + parseContext.error($2.line, " no such field in structure", $3.string->c_str(), ""); + parseContext.recover(); + $$ = $1; + } + } + } else { + parseContext.error($2.line, " field selection requires structure, vector, or matrix on left hand side", $3.string->c_str(), ""); + parseContext.recover(); + $$ = $1; + } + // don't delete $3.string, it's from the pool + } + | postfix_expression INC_OP { + if (parseContext.lValueErrorCheck($2.line, "++", $1)) + parseContext.recover(); + $$ = parseContext.intermediate.addUnaryMath(EOpPostIncrement, $1, $2.line, parseContext.symbolTable); + if ($$ == 0) { + parseContext.unaryOpError($2.line, "++", $1->getCompleteString()); + parseContext.recover(); + $$ = $1; + } + } + | postfix_expression DEC_OP { + if (parseContext.lValueErrorCheck($2.line, "--", $1)) + parseContext.recover(); + $$ = parseContext.intermediate.addUnaryMath(EOpPostDecrement, $1, $2.line, parseContext.symbolTable); + if ($$ == 0) { + parseContext.unaryOpError($2.line, "--", $1->getCompleteString()); + parseContext.recover(); + $$ = $1; + } + } + ; + +integer_expression + : expression { + if (parseContext.integerErrorCheck($1, "[]")) + parseContext.recover(); + $$ = $1; + } + ; + +function_call + : function_call_generic { + TFunction* fnCall = $1.function; + TOperator op = fnCall->getBuiltInOp(); + + if (op != EOpNull) { + // + // Then this should be a constructor. + // + TType type(EbtVoid); // use this to get the type back + if (parseContext.constructorErrorCheck($1.line, $1.intermNode, *fnCall, op, &type)) { + $$ = 0; + } else { + // + // It's a constructor, of type 'type'. + // + $$ = parseContext.addConstructor($1.intermNode, &type, op, fnCall, $1.line); + } + + if ($$ == 0) { + parseContext.recover(); + $$ = parseContext.intermediate.setAggregateOperator(0, op, $1.line); + } + $$->setType(type); + } else { + // + // Not a constructor. Find it in the symbol table. + // + const TFunction* fnCandidate; + bool builtIn; + fnCandidate = parseContext.findFunction($1.line, fnCall, &builtIn); + if (fnCandidate) { + // + // A declared function. But, it might still map to a built-in + // operation. + // + op = fnCandidate->getBuiltInOp(); + if (builtIn && op != EOpNull) { + // + // A function call mapped to a built-in operation. + // + if (fnCandidate->getParamCount() == 1) { + // + // Treat it like a built-in unary operator. + // + $$ = parseContext.intermediate.addUnaryMath(op, $1.intermNode, 0, parseContext.symbolTable); + if ($$ == 0) { + parseContext.error($1.intermNode->getLine(), " wrong operand type", "Internal Error", + "built in unary operator function. Type: %s", + static_cast($1.intermNode)->getCompleteString().c_str()); + YYERROR; + } + } else { + $$ = parseContext.intermediate.setAggregateOperator($1.intermAggregate, op, $1.line); + } + } else { + // This is a real function call + + $$ = parseContext.intermediate.setAggregateOperator($1.intermAggregate, EOpFunctionCall, $1.line); + $$->setType(fnCandidate->getReturnType()); + + // this is how we know whether the given function is a builtIn function or a user defined function + // if builtIn == false, it's a userDefined -> could be an overloaded builtIn function also + // if builtIn == true, it's definitely a builtIn function with EOpNull + if (!builtIn) + $$->getAsAggregate()->setUserDefined(); + $$->getAsAggregate()->setName(fnCandidate->getMangledName()); + + TQualifier qual; + TQualifierList& qualifierList = $$->getAsAggregate()->getQualifier(); + for (int i = 0; i < fnCandidate->getParamCount(); ++i) { + qual = (*fnCandidate)[i].type->getQualifier(); + if (qual == EvqOut || qual == EvqInOut) { + if (parseContext.lValueErrorCheck($$->getLine(), "assign", $$->getAsAggregate()->getSequence()[i]->getAsTyped())) { + parseContext.error($1.intermNode->getLine(), "Constant value cannot be passed for 'out' or 'inout' parameters.", "Error", ""); + parseContext.recover(); + } + } + qualifierList.push_back(qual); + } + } + $$->setType(fnCandidate->getReturnType()); + } else { + // error message was put out by PaFindFunction() + // Put on a dummy node for error recovery + constUnion *unionArray = new constUnion[1]; + unionArray->fConst = 0.0; + $$ = parseContext.intermediate.addConstantUnion(unionArray, TType(EbtFloat, EvqConst), $1.line); + parseContext.recover(); + } + } + delete fnCall; + } + ; + +function_call_generic + : function_call_header_with_parameters RIGHT_PAREN { + $$ = $1; + $$.line = $2.line; + } + | function_call_header_no_parameters RIGHT_PAREN { + $$ = $1; + $$.line = $2.line; + } + ; + +function_call_header_no_parameters + : function_call_header VOID_TYPE { + $$.function = $1; + $$.intermNode = 0; + } + | function_call_header { + $$.function = $1; + $$.intermNode = 0; + } + ; + +function_call_header_with_parameters + : function_call_header assignment_expression { + TParameter param = { 0, new TType($2->getType()) }; + $1->addParameter(param); + $$.function = $1; + $$.intermNode = $2; + } + | function_call_header_with_parameters COMMA assignment_expression { + TParameter param = { 0, new TType($3->getType()) }; + $1.function->addParameter(param); + $$.function = $1.function; + $$.intermNode = parseContext.intermediate.growAggregate($1.intermNode, $3, $2.line); + } + ; + +function_call_header + : function_identifier LEFT_PAREN { + $$ = $1; + } + ; + +function_identifier + : constructor_identifier { + if ($1.op == EOpConstructStruct) { + TString tempString = ""; + TFunction *function = new TFunction(&tempString, *($1.type.userDef), $1.op); + $$ = function; + } + else { + TFunction *function = new TFunction($1.op); + $$ = function; + } + } + | IDENTIFIER { + if (parseContext.reservedErrorCheck($1.line, *$1.string)) + parseContext.recover(); + TType type(EbtVoid); + TFunction *function = new TFunction($1.string, type); + $$ = function; + } + ; + +// Grammar Note: Constructors look like functions, but lexical anaylsis recognized most of them as keywords. + +// +// Don't go through the symbol table for constructors. +// Their parameters will be verified algorithmically. +// +constructor_identifier + : FLOAT_TYPE { $$.line = $1.line; $$.op = EOpConstructFloat; } + | INT_TYPE { $$.line = $1.line; $$.op = EOpConstructInt; } + | BOOL_TYPE { $$.line = $1.line; $$.op = EOpConstructBool; } + | VEC2 { $$.line = $1.line; $$.op = EOpConstructVec2; } + | VEC3 { $$.line = $1.line; $$.op = EOpConstructVec3; } + | VEC4 { $$.line = $1.line; $$.op = EOpConstructVec4; } + | BVEC2 { FRAG_VERT_ONLY("bvec2", $1.line); $$.line = $1.line; $$.op = EOpConstructBVec2; } + | BVEC3 { FRAG_VERT_ONLY("bvec3", $1.line); $$.line = $1.line; $$.op = EOpConstructBVec3; } + | BVEC4 { FRAG_VERT_ONLY("bvec4", $1.line); $$.line = $1.line; $$.op = EOpConstructBVec4; } + | IVEC2 { FRAG_VERT_ONLY("ivec2", $1.line); $$.line = $1.line; $$.op = EOpConstructIVec2; } + | IVEC3 { FRAG_VERT_ONLY("ivec3", $1.line); $$.line = $1.line; $$.op = EOpConstructIVec3; } + | IVEC4 { FRAG_VERT_ONLY("ivec4", $1.line); $$.line = $1.line; $$.op = EOpConstructIVec4; } + | MATRIX2 { FRAG_VERT_ONLY("mat2", $1.line); $$.line = $1.line; $$.op = EOpConstructMat2; } + | MATRIX3 { FRAG_VERT_ONLY("mat3", $1.line); $$.line = $1.line; $$.op = EOpConstructMat3; } + | MATRIX4 { FRAG_VERT_ONLY("mat4", $1.line); $$.line = $1.line; $$.op = EOpConstructMat4; } + | TYPE_NAME { + TType& structure = static_cast($1.symbol)->getType(); + TQualifier qual = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; + TPublicType t = { EbtStruct, qual, 1, false, false, &structure, $1.line }; + $$.type = t; + $$.line = $1.line; + $$.op = EOpConstructStruct; + } + ; + +unary_expression + : postfix_expression { + $$ = $1; + } + | INC_OP unary_expression { + if (parseContext.lValueErrorCheck($1.line, "++", $2)) + parseContext.recover(); + $$ = parseContext.intermediate.addUnaryMath(EOpPreIncrement, $2, $1.line, parseContext.symbolTable); + if ($$ == 0) { + parseContext.unaryOpError($1.line, "++", $2->getCompleteString()); + parseContext.recover(); + $$ = $2; + } + } + | DEC_OP unary_expression { + if (parseContext.lValueErrorCheck($1.line, "--", $2)) + parseContext.recover(); + $$ = parseContext.intermediate.addUnaryMath(EOpPreDecrement, $2, $1.line, parseContext.symbolTable); + if ($$ == 0) { + parseContext.unaryOpError($1.line, "--", $2->getCompleteString()); + parseContext.recover(); + $$ = $2; + } + } + | unary_operator unary_expression { + if ($1.op != EOpNull) { + $$ = parseContext.intermediate.addUnaryMath($1.op, $2, $1.line, parseContext.symbolTable); + if ($$ == 0) { + char* errorOp = ""; + switch($1.op) { + case EOpNegative: errorOp = "-"; break; + case EOpLogicalNot: errorOp = "!"; break; + case EOpBitwiseNot: errorOp = "~"; break; + default: break; + } + parseContext.unaryOpError($1.line, errorOp, $2->getCompleteString()); + parseContext.recover(); + $$ = $2; + } + } else + $$ = $2; + } + ; +// Grammar Note: No traditional style type casts. + +unary_operator + : PLUS { $$.line = $1.line; $$.op = EOpNull; } + | DASH { $$.line = $1.line; $$.op = EOpNegative; } + | BANG { $$.line = $1.line; $$.op = EOpLogicalNot; } + | TILDE { PACK_UNPACK_ONLY("~", $1.line); + $$.line = $1.line; $$.op = EOpBitwiseNot; } + ; +// Grammar Note: No '*' or '&' unary ops. Pointers are not supported. + +multiplicative_expression + : unary_expression { $$ = $1; } + | multiplicative_expression STAR unary_expression { + FRAG_VERT_ONLY("*", $2.line); + $$ = parseContext.intermediate.addBinaryMath(EOpMul, $1, $3, $2.line, parseContext.symbolTable); + if ($$ == 0) { + parseContext.binaryOpError($2.line, "*", $1->getCompleteString(), $3->getCompleteString()); + parseContext.recover(); + $$ = $1; + } + } + | multiplicative_expression SLASH unary_expression { + FRAG_VERT_ONLY("/", $2.line); + $$ = parseContext.intermediate.addBinaryMath(EOpDiv, $1, $3, $2.line, parseContext.symbolTable); + if ($$ == 0) { + parseContext.binaryOpError($2.line, "/", $1->getCompleteString(), $3->getCompleteString()); + parseContext.recover(); + $$ = $1; + } + } + | multiplicative_expression PERCENT unary_expression { + PACK_UNPACK_ONLY("%", $2.line); + $$ = parseContext.intermediate.addBinaryMath(EOpMod, $1, $3, $2.line, parseContext.symbolTable); + if ($$ == 0) { + parseContext.binaryOpError($2.line, "%", $1->getCompleteString(), $3->getCompleteString()); + parseContext.recover(); + $$ = $1; + } + } + ; + +additive_expression + : multiplicative_expression { $$ = $1; } + | additive_expression PLUS multiplicative_expression { + $$ = parseContext.intermediate.addBinaryMath(EOpAdd, $1, $3, $2.line, parseContext.symbolTable); + if ($$ == 0) { + parseContext.binaryOpError($2.line, "+", $1->getCompleteString(), $3->getCompleteString()); + parseContext.recover(); + $$ = $1; + } + } + | additive_expression DASH multiplicative_expression { + $$ = parseContext.intermediate.addBinaryMath(EOpSub, $1, $3, $2.line, parseContext.symbolTable); + if ($$ == 0) { + parseContext.binaryOpError($2.line, "-", $1->getCompleteString(), $3->getCompleteString()); + parseContext.recover(); + $$ = $1; + } + } + ; + +shift_expression + : additive_expression { $$ = $1; } + | shift_expression LEFT_OP additive_expression { + PACK_UNPACK_ONLY("<<", $2.line); + $$ = parseContext.intermediate.addBinaryMath(EOpLeftShift, $1, $3, $2.line, parseContext.symbolTable); + if ($$ == 0) { + parseContext.binaryOpError($2.line, "<<", $1->getCompleteString(), $3->getCompleteString()); + parseContext.recover(); + $$ = $1; + } + } + | shift_expression RIGHT_OP additive_expression { + PACK_UNPACK_ONLY(">>", $2.line); + $$ = parseContext.intermediate.addBinaryMath(EOpRightShift, $1, $3, $2.line, parseContext.symbolTable); + if ($$ == 0) { + parseContext.binaryOpError($2.line, ">>", $1->getCompleteString(), $3->getCompleteString()); + parseContext.recover(); + $$ = $1; + } + } + ; + +relational_expression + : shift_expression { $$ = $1; } + | relational_expression LEFT_ANGLE shift_expression { + $$ = parseContext.intermediate.addBinaryMath(EOpLessThan, $1, $3, $2.line, parseContext.symbolTable); + if ($$ == 0) { + parseContext.binaryOpError($2.line, "<", $1->getCompleteString(), $3->getCompleteString()); + parseContext.recover(); + constUnion *unionArray = new constUnion[1]; + unionArray->bConst = false; + $$ = parseContext.intermediate.addConstantUnion(unionArray, TType(EbtBool, EvqConst), $2.line); + } + } + | relational_expression RIGHT_ANGLE shift_expression { + $$ = parseContext.intermediate.addBinaryMath(EOpGreaterThan, $1, $3, $2.line, parseContext.symbolTable); + if ($$ == 0) { + parseContext.binaryOpError($2.line, ">", $1->getCompleteString(), $3->getCompleteString()); + parseContext.recover(); + constUnion *unionArray = new constUnion[1]; + unionArray->bConst = false; + $$ = parseContext.intermediate.addConstantUnion(unionArray, TType(EbtBool, EvqConst), $2.line); + } + } + | relational_expression LE_OP shift_expression { + $$ = parseContext.intermediate.addBinaryMath(EOpLessThanEqual, $1, $3, $2.line, parseContext.symbolTable); + if ($$ == 0) { + parseContext.binaryOpError($2.line, "<=", $1->getCompleteString(), $3->getCompleteString()); + parseContext.recover(); + constUnion *unionArray = new constUnion[1]; + unionArray->bConst = false; + $$ = parseContext.intermediate.addConstantUnion(unionArray, TType(EbtBool, EvqConst), $2.line); + } + } + | relational_expression GE_OP shift_expression { + $$ = parseContext.intermediate.addBinaryMath(EOpGreaterThanEqual, $1, $3, $2.line, parseContext.symbolTable); + if ($$ == 0) { + parseContext.binaryOpError($2.line, ">=", $1->getCompleteString(), $3->getCompleteString()); + parseContext.recover(); + constUnion *unionArray = new constUnion[1]; + unionArray->bConst = false; + $$ = parseContext.intermediate.addConstantUnion(unionArray, TType(EbtBool, EvqConst), $2.line); + } + } + ; + +equality_expression + : relational_expression { $$ = $1; } + | equality_expression EQ_OP relational_expression { + $$ = parseContext.intermediate.addBinaryMath(EOpEqual, $1, $3, $2.line, parseContext.symbolTable); + if ($$ == 0) { + parseContext.binaryOpError($2.line, "==", $1->getCompleteString(), $3->getCompleteString()); + parseContext.recover(); + constUnion *unionArray = new constUnion[1]; + unionArray->bConst = false; + $$ = parseContext.intermediate.addConstantUnion(unionArray, TType(EbtBool, EvqConst), $2.line); + } + } + | equality_expression NE_OP relational_expression { + $$ = parseContext.intermediate.addBinaryMath(EOpNotEqual, $1, $3, $2.line, parseContext.symbolTable); + if ($$ == 0) { + parseContext.binaryOpError($2.line, "!=", $1->getCompleteString(), $3->getCompleteString()); + parseContext.recover(); + constUnion *unionArray = new constUnion[1]; + unionArray->bConst = false; + $$ = parseContext.intermediate.addConstantUnion(unionArray, TType(EbtBool, EvqConst), $2.line); + } + } + ; + +and_expression + : equality_expression { $$ = $1; } + | and_expression AMPERSAND equality_expression { + PACK_UNPACK_ONLY("&", $2.line); + $$ = parseContext.intermediate.addBinaryMath(EOpAnd, $1, $3, $2.line, parseContext.symbolTable); + if ($$ == 0) { + parseContext.binaryOpError($2.line, "&", $1->getCompleteString(), $3->getCompleteString()); + parseContext.recover(); + $$ = $1; + } + } + ; + +exclusive_or_expression + : and_expression { $$ = $1; } + | exclusive_or_expression CARET and_expression { + PACK_UNPACK_ONLY("^", $2.line); + $$ = parseContext.intermediate.addBinaryMath(EOpExclusiveOr, $1, $3, $2.line, parseContext.symbolTable); + if ($$ == 0) { + parseContext.binaryOpError($2.line, "^", $1->getCompleteString(), $3->getCompleteString()); + parseContext.recover(); + $$ = $1; + } + } + ; + +inclusive_or_expression + : exclusive_or_expression { $$ = $1; } + | inclusive_or_expression VERTICAL_BAR exclusive_or_expression { + PACK_UNPACK_ONLY("|", $2.line); + $$ = parseContext.intermediate.addBinaryMath(EOpInclusiveOr, $1, $3, $2.line, parseContext.symbolTable); + if ($$ == 0) { + parseContext.binaryOpError($2.line, "|", $1->getCompleteString(), $3->getCompleteString()); + parseContext.recover(); + $$ = $1; + } + } + ; + +logical_and_expression + : inclusive_or_expression { $$ = $1; } + | logical_and_expression AND_OP inclusive_or_expression { + $$ = parseContext.intermediate.addBinaryMath(EOpLogicalAnd, $1, $3, $2.line, parseContext.symbolTable); + if ($$ == 0) { + parseContext.binaryOpError($2.line, "&&", $1->getCompleteString(), $3->getCompleteString()); + parseContext.recover(); + constUnion *unionArray = new constUnion[1]; + unionArray->bConst = false; + $$ = parseContext.intermediate.addConstantUnion(unionArray, TType(EbtBool, EvqConst), $2.line); + } + } + ; + +logical_xor_expression + : logical_and_expression { $$ = $1; } + | logical_xor_expression XOR_OP logical_and_expression { + $$ = parseContext.intermediate.addBinaryMath(EOpLogicalXor, $1, $3, $2.line, parseContext.symbolTable); + if ($$ == 0) { + parseContext.binaryOpError($2.line, "^^", $1->getCompleteString(), $3->getCompleteString()); + parseContext.recover(); + constUnion *unionArray = new constUnion[1]; + unionArray->bConst = false; + $$ = parseContext.intermediate.addConstantUnion(unionArray, TType(EbtBool, EvqConst), $2.line); + } + } + ; + +logical_or_expression + : logical_xor_expression { $$ = $1; } + | logical_or_expression OR_OP logical_xor_expression { + $$ = parseContext.intermediate.addBinaryMath(EOpLogicalOr, $1, $3, $2.line, parseContext.symbolTable); + if ($$ == 0) { + parseContext.binaryOpError($2.line, "||", $1->getCompleteString(), $3->getCompleteString()); + parseContext.recover(); + constUnion *unionArray = new constUnion[1]; + unionArray->bConst = false; + $$ = parseContext.intermediate.addConstantUnion(unionArray, TType(EbtBool, EvqConst), $2.line); + } + } + ; + +conditional_expression + : logical_or_expression { $$ = $1; } + | logical_or_expression QUESTION expression COLON assignment_expression { + if (parseContext.boolErrorCheck($2.line, $1)) + parseContext.recover(); + + $$ = parseContext.intermediate.addSelection($1, $3, $5, $2.line); + if ($3->getType() != $5->getType()) + $$ = 0; + + if ($$ == 0) { + parseContext.binaryOpError($2.line, ":", $3->getCompleteString(), $5->getCompleteString()); + parseContext.recover(); + $$ = $5; + } + } + ; + +assignment_expression + : conditional_expression { $$ = $1; } + | unary_expression assignment_operator assignment_expression { + if (parseContext.lValueErrorCheck($2.line, "assign", $1)) + parseContext.recover(); + $$ = parseContext.intermediate.addAssign($2.op, $1, $3, $2.line); + if ($$ == 0) { + parseContext.assignError($2.line, "assign", $1->getCompleteString(), $3->getCompleteString()); + parseContext.recover(); + $$ = $1; + } + } + ; + +assignment_operator + : EQUAL { $$.line = $1.line; $$.op = EOpAssign; } + | MUL_ASSIGN { FRAG_VERT_ONLY("*=", $1.line); $$.line = $1.line; $$.op = EOpMulAssign; } + | DIV_ASSIGN { FRAG_VERT_ONLY("/=", $1.line); $$.line = $1.line; $$.op = EOpDivAssign; } + | MOD_ASSIGN { PACK_UNPACK_ONLY("%=", $1.line); $$.line = $1.line; $$.op = EOpModAssign; } + | ADD_ASSIGN { $$.line = $1.line; $$.op = EOpAddAssign; } + | SUB_ASSIGN { $$.line = $1.line; $$.op = EOpSubAssign; } + | LEFT_ASSIGN { PACK_UNPACK_ONLY("<<=", $1.line); $$.line = $1.line; $$.op = EOpLeftShiftAssign; } + | RIGHT_ASSIGN { PACK_UNPACK_ONLY("<<=", $1.line); $$.line = $1.line; $$.op = EOpRightShiftAssign; } + | AND_ASSIGN { PACK_UNPACK_ONLY("&=", $1.line); $$.line = $1.line; $$.op = EOpAndAssign; } + | XOR_ASSIGN { PACK_UNPACK_ONLY("^=", $1.line); $$.line = $1.line; $$.op = EOpExclusiveOrAssign; } + | OR_ASSIGN { PACK_UNPACK_ONLY("|=", $1.line); $$.line = $1.line; $$.op = EOpInclusiveOrAssign; } + ; + +expression + : assignment_expression { + $$ = $1; + } + | expression COMMA assignment_expression { + $$ = parseContext.intermediate.addComma($1, $3, $2.line); + if ($$ == 0) { + parseContext.binaryOpError($2.line, ",", $1->getCompleteString(), $3->getCompleteString()); + parseContext.recover(); + $$ = $3; + } + } + ; + +constant_expression + : conditional_expression { + if (parseContext.constErrorCheck($1)) + parseContext.recover(); + $$ = $1; + } + ; + +declaration + : function_prototype SEMICOLON { $$ = 0; } + | init_declarator_list SEMICOLON { + if ($1.intermAggregate) + $1.intermAggregate->setOperator(EOpSequence); + $$ = $1.intermAggregate; + } + ; + +function_prototype + : function_declarator RIGHT_PAREN { + // + // Multiple declarations of the same function are allowed. + // + // If this is a definition, the definition production code will check for redefinitions + // (we don't know at this point if it's a definition or not). + // + // Redeclarations are allowed. But, return types and parameter qualifiers must match. + // + TFunction* prevDec = static_cast(parseContext.symbolTable.find($1->getMangledName())); + if (prevDec) { + if (prevDec->getReturnType() != $1->getReturnType()) { + parseContext.error($2.line, "overloaded functions must have the same return type", $1->getReturnType().getBasicString(), ""); + parseContext.recover(); + } + for (int i = 0; i < prevDec->getParamCount(); ++i) { + if ((*prevDec)[i].type->getQualifier() != (*$1)[i].type->getQualifier()) { + parseContext.error($2.line, "overloaded functions must have the same parameter qualifiers", (*$1)[i].type->getQualifierString(), ""); + parseContext.recover(); + } + } + } + + // + // If this is a redeclaration, it could also be a definition, + // in which case, we want to use the variable names from this one, and not the one that's + // being redeclared. So, pass back up this declaration, not the one in the symbol table. + // + $$.function = $1; + $$.line = $2.line; + + parseContext.symbolTable.insert(*$$.function); + } + ; + +function_declarator + : function_header { + $$ = $1; + } + | function_header_with_parameters { + $$ = $1; + } + ; + + +function_header_with_parameters + : function_header parameter_declaration { + // Add the parameter + $$ = $1; + if ($2.param.type->getBasicType() != EbtVoid) + $1->addParameter($2.param); + else + delete $2.param.type; + } + | function_header_with_parameters COMMA parameter_declaration { + // + // Only first parameter of one-parameter functions can be void + // The check for named parameters not being void is done in parameter_declarator + // + if ($3.param.type->getBasicType() == EbtVoid) { + // + // This parameter > first is void + // + parseContext.error($2.line, "cannot be an argument type except for '(void)'", "void", ""); + parseContext.recover(); + delete $3.param.type; + } else { + // Add the parameter + $$ = $1; + $1->addParameter($3.param); + } + } + ; + +function_header + : fully_specified_type IDENTIFIER LEFT_PAREN { + if ($1.qualifier != EvqGlobal && $1.qualifier != EvqTemporary) { + parseContext.error($2.line, "no qualifiers allowed for function return", getQualifierString($1.qualifier), ""); + parseContext.recover(); + } + // make sure a sampler is not involved as well... + if (parseContext.structQualifierErrorCheck($2.line, $1)) + parseContext.recover(); + + // Add the function as a prototype after parsing it (we do not support recursion) + TFunction *function; + TType type($1); + function = new TFunction($2.string, type); + $$ = function; + } + ; + +parameter_declarator + // Type + name + : type_specifier IDENTIFIER { + if ($1.type == EbtVoid) { + parseContext.error($2.line, "illegal use of type 'void'", $2.string->c_str(), ""); + parseContext.recover(); + } + if (parseContext.reservedErrorCheck($2.line, *$2.string)) + parseContext.recover(); + TParameter param = {$2.string, new TType($1)}; + $$.line = $2.line; + $$.param = param; + } + | type_specifier IDENTIFIER LEFT_BRACKET constant_expression RIGHT_BRACKET { + // Check that we can make an array out of this type + if ($1.array) { + parseContext.error($3.line, "cannot declare arrays of this type", TType($1).getCompleteString().c_str(), ""); + parseContext.recover(); + } + if (parseContext.reservedErrorCheck($2.line, *$2.string)) + parseContext.recover(); + $1.array = true; + TType* type = new TType($1); + if ($4->getAsConstantUnion()) + type->setArraySize($4->getAsConstantUnion()->getUnionArrayPointer()->iConst); + TParameter param = { $2.string, type }; + $$.line = $2.line; + $$.param = param; + } + ; + +parameter_declaration + // + // The only parameter qualifier a parameter can have are + // IN_QUAL, OUT_QUAL, INOUT_QUAL, or CONST. + // + + // + // Type + name + // + : type_qualifier parameter_qualifier parameter_declarator { + $$ = $3; + if (parseContext.paramErrorCheck($3.line, $1.qualifier, $2, $$.param.type)) + parseContext.recover(); + } + | parameter_qualifier parameter_declarator { + $$ = $2; + if (parseContext.parameterSamplerErrorCheck($2.line, $1, *$2.param.type)) + parseContext.recover(); + if (parseContext.paramErrorCheck($2.line, EvqTemporary, $1, $$.param.type)) + parseContext.recover(); + } + // + // Only type + // + | type_qualifier parameter_qualifier parameter_type_specifier { + $$ = $3; + if (parseContext.paramErrorCheck($3.line, $1.qualifier, $2, $$.param.type)) + parseContext.recover(); + } + | parameter_qualifier parameter_type_specifier { + $$ = $2; + if (parseContext.parameterSamplerErrorCheck($2.line, $1, *$2.param.type)) + parseContext.recover(); + if (parseContext.paramErrorCheck($2.line, EvqTemporary, $1, $$.param.type)) + parseContext.recover(); + } + ; + +parameter_qualifier + : /* empty */ { + $$ = EvqIn; + } + | IN_QUAL { + $$ = EvqIn; + } + | OUT_QUAL { + $$ = EvqOut; + } + | INOUT_QUAL { + $$ = EvqInOut; + } + ; + +parameter_type_specifier + : type_specifier { + TParameter param = { 0, new TType($1) }; + $$.param = param; + + } + | type_specifier LEFT_BRACKET constant_expression RIGHT_BRACKET { + // Check that we can make an array out of this type + if ($1.array) { + parseContext.error($2.line, "cannot declare arrays of this type", TType($1).getCompleteString().c_str(), ""); + parseContext.recover(); + } + $1.array = true; + TType* type = new TType($1); + if ($3->getAsConstantUnion()) + type->setArraySize($3->getAsConstantUnion()->getUnionArrayPointer()->iConst); + + TParameter param = { 0, type }; + $$.line = $2.line; + $$.param = param; + } + ; + +init_declarator_list + : single_declaration { + $$ = $1; + } + | init_declarator_list COMMA IDENTIFIER { + $$ = $1; + if (parseContext.structQualifierErrorCheck($3.line, $1.type)) + parseContext.recover(); + + if (parseContext.nonInitErrorCheck($3.line, *$3.string, $$.type)) + parseContext.recover(); + } + | init_declarator_list COMMA IDENTIFIER LEFT_BRACKET RIGHT_BRACKET { + $$ = $1; + if (parseContext.structQualifierErrorCheck($3.line, $1.type)) + parseContext.recover(); + + if (parseContext.arrayErrorCheck($4.line, *$3.string, $$.type, 0)) + parseContext.recover(); + } + | init_declarator_list COMMA IDENTIFIER LEFT_BRACKET constant_expression RIGHT_BRACKET { + $$ = $1; + if (parseContext.structQualifierErrorCheck($3.line, $1.type)) + parseContext.recover(); + + if (parseContext.arrayErrorCheck($4.line, *$3.string, $$.type, $5)) + parseContext.recover(); + } + | init_declarator_list COMMA IDENTIFIER EQUAL initializer { + $$ = $1; + if (parseContext.structQualifierErrorCheck($3.line, $1.type)) + parseContext.recover(); + + TIntermNode* intermNode; + if (!parseContext.executeInitializer($3.line, *$3.string, $1.type, $5, intermNode)) { + // + // build the intermediate representation + // + if (intermNode) + $$.intermAggregate = parseContext.intermediate.growAggregate($1.intermNode, intermNode, $4.line); + else + $$.intermAggregate = $1.intermAggregate; + } else { + parseContext.recover(); + $$.intermAggregate = 0; + } + } + ; + +single_declaration + : fully_specified_type { + $$.type = $1; + $$.intermAggregate = 0; + } + | fully_specified_type IDENTIFIER { + $$.intermAggregate = 0; + $$.type = $1; + if (parseContext.structQualifierErrorCheck($2.line, $1)) + parseContext.recover(); + + if (parseContext.nonInitErrorCheck($2.line, *$2.string, $$.type)) + parseContext.recover(); + } + | fully_specified_type IDENTIFIER LEFT_BRACKET RIGHT_BRACKET { + $$.intermAggregate = 0; + $$.type = $1; + if (parseContext.structQualifierErrorCheck($2.line, $1)) + parseContext.recover(); + + if (parseContext.arrayErrorCheck($3.line, *$2.string, $$.type, 0)) + parseContext.recover(); + } + | fully_specified_type IDENTIFIER LEFT_BRACKET constant_expression RIGHT_BRACKET { + $$.intermAggregate = 0; + $$.type = $1; + if (parseContext.structQualifierErrorCheck($2.line, $1)) + parseContext.recover(); + + if (parseContext.arrayErrorCheck($3.line, *$2.string, $$.type, $4)) + parseContext.recover(); + } + | fully_specified_type IDENTIFIER EQUAL initializer { + $$.type = $1; + if (parseContext.structQualifierErrorCheck($2.line, $1)) + parseContext.recover(); + + TIntermNode* intermNode; + if (!parseContext.executeInitializer($2.line, *$2.string, $1, $4, intermNode)) { + // + // Build intermediate representation + // + if (intermNode) + $$.intermAggregate = parseContext.intermediate.makeAggregate(intermNode, $3.line); + else + $$.intermAggregate = 0; + } else { + parseContext.recover(); + $$.intermAggregate = 0; + } + } + +// +// Place holder for the pack/unpack languages. +// +// | buffer_specifier { +// $$.intermAggregate = 0; +// } + ; + +// Grammar Note: No 'enum', or 'typedef'. + +// +// Place holder for the pack/unpack languages. +// +//%type buffer_declaration +//%type buffer_specifier input_or_output buffer_declaration_list +//buffer_specifier +// : input_or_output LEFT_BRACE buffer_declaration_list RIGHT_BRACE { +// } +// ; +// +//input_or_output +// : INPUT { +// if (parseContext.globalErrorCheck($1.line, parseContext.symbolTable.atGlobalLevel(), "input")) +// parseContext.recover(); +// UNPACK_ONLY("input", $1.line); +// $$.qualifier = EvqInput; +// } +// | OUTPUT { +// if (parseContext.globalErrorCheck($1.line, parseContext.symbolTable.atGlobalLevel(), "output")) +// parseContext.recover(); +// PACK_ONLY("output", $1.line); +// $$.qualifier = EvqOutput; +// } +// ; + +// +// Place holder for the pack/unpack languages. +// +//buffer_declaration_list +// : buffer_declaration { +// } +// | buffer_declaration_list buffer_declaration { +// } +// ; + +// +// Input/output semantics: +// float must be 16 or 32 bits +// float alignment restrictions? +// check for only one input and only one output +// sum of bitfields has to be multiple of 32 +// + +// +// Place holder for the pack/unpack languages. +// +//buffer_declaration +// : type_specifier IDENTIFIER COLON constant_expression SEMICOLON { +// if (parseContext.reservedErrorCheck($2.line, *$2.string, parseContext)) +// parseContext.recover(); +// $$.variable = new TVariable($2.string, $1); +// if (! parseContext.symbolTable.insert(*$$.variable)) { +// parseContext.error($2.line, "redefinition", $$.variable->getName().c_str(), ""); +// parseContext.recover(); +// // don't have to delete $$.variable, the pool pop will take care of it +// } +// } +// ; + +fully_specified_type + : type_specifier { + $$ = $1; + } + | type_qualifier type_specifier { + TPublicType t = { $2.type, $1.qualifier, $2.size, $2.matrix, false, $2.userDef, 0 }; + if ($1.qualifier == EvqAttribute && + ($2.type == EbtBool || $2.type == EbtInt)) { + parseContext.error($2.line, "cannot be bool or int", getQualifierString($1.qualifier), ""); + parseContext.recover(); + } + if (($1.qualifier == EvqVaryingIn || $1.qualifier == EvqVaryingOut) && + ($2.type == EbtBool || $2.type == EbtInt)) { + parseContext.error($2.line, "cannot be bool or int", getQualifierString($1.qualifier), ""); + parseContext.recover(); + } + $$ = t; + } + ; + +type_qualifier + : CONST_QUAL { + TPublicType t = { EbtVoid, EvqConst, 1, false, false, 0 }; + $$ = t; + } + | ATTRIBUTE { + VERTEX_ONLY("attribute", $1.line); + if (parseContext.globalErrorCheck($1.line, parseContext.symbolTable.atGlobalLevel(), "attribute")) + parseContext.recover(); + TPublicType t = { EbtVoid, EvqAttribute, 1, false, false, 0 }; + $$ = t; + } + | VARYING { + if (parseContext.globalErrorCheck($1.line, parseContext.symbolTable.atGlobalLevel(), "varying")) + parseContext.recover(); + TPublicType t = { EbtVoid, EvqVaryingIn, 1, false, false, 0 }; + if (parseContext.language == EShLangVertex) + t.qualifier = EvqVaryingOut; + $$ = t; + } + | UNIFORM { + if (parseContext.globalErrorCheck($1.line, parseContext.symbolTable.atGlobalLevel(), "uniform")) + parseContext.recover(); + TPublicType t = { EbtVoid, EvqUniform, 1, false, false, 0 }; + $$ = t; + } + ; + +type_specifier + : VOID_TYPE { + TQualifier qual = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; + TPublicType t = { EbtVoid, qual, 1, false, false, 0, $1.line }; + $$ = t; + } + | FLOAT_TYPE { + TQualifier qual = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; + TPublicType t = { EbtFloat, qual, 1, false, false, 0, $1.line }; + $$ = t; + } + | INT_TYPE { + TQualifier qual = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; + TPublicType t = { EbtInt, qual, 1, false, false, 0, $1.line }; + $$ = t; + } + | BOOL_TYPE { + TQualifier qual = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; + TPublicType t = { EbtBool, qual, 1, false, false, 0, $1.line }; + $$ = t; + } +// | UNSIGNED INT_TYPE { +// PACK_UNPACK_ONLY("unsigned", $1.line); +// TQualifier qual = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; +// TPublicType t = { EbtInt, qual, 1, false, false, 0, $1.line }; +// $$ = t; +// } + | VEC2 { + TQualifier qual = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; + TPublicType t = { EbtFloat, qual, 2, false, false, 0, $1.line }; + $$ = t; + } + | VEC3 { + TQualifier qual = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; + TPublicType t = { EbtFloat, qual, 3, false, false, 0, $1.line }; + $$ = t; + } + | VEC4 { + TQualifier qual = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; + TPublicType t = { EbtFloat, qual, 4, false, false, 0, $1.line }; + $$ = t; + } + | BVEC2 { + TQualifier qual = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; + TPublicType t = { EbtBool, qual, 2, false, false, 0, $1.line }; + $$ = t; + } + | BVEC3 { + TQualifier qual = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; + TPublicType t = { EbtBool, qual, 3, false, false, 0, $1.line }; + $$ = t; + } + | BVEC4 { + TQualifier qual = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; + TPublicType t = { EbtBool, qual, 4, false, false, 0, $1.line }; + $$ = t; + } + | IVEC2 { + TQualifier qual = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; + TPublicType t = { EbtInt, qual, 2, false, false, 0, $1.line }; + $$ = t; + } + | IVEC3 { + TQualifier qual = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; + TPublicType t = { EbtInt, qual, 3, false, false, 0, $1.line }; + $$ = t; + } + | IVEC4 { + TQualifier qual = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; + TPublicType t = { EbtInt, qual, 4, false, false, 0, $1.line }; + $$ = t; + } + | MATRIX2 { + FRAG_VERT_ONLY("mat2", $1.line); + TQualifier qual = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; + TPublicType t = { EbtFloat, qual, 2, true, false, 0, $1.line }; + $$ = t; + } + | MATRIX3 { + FRAG_VERT_ONLY("mat3", $1.line); + TQualifier qual = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; + TPublicType t = { EbtFloat, qual, 3, true, false, 0, $1.line }; + $$ = t; + } + | MATRIX4 { + FRAG_VERT_ONLY("mat4", $1.line); + TQualifier qual = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; + TPublicType t = { EbtFloat, qual, 4, true, false, 0, $1.line }; + $$ = t; + } + | SAMPLER1D { + FRAG_VERT_ONLY("sampler1D", $1.line); + TQualifier qual = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; + TPublicType t = { EbtSampler1D, qual, 1, false, false, 0, $1.line }; + $$ = t; + } + | SAMPLER2D { + FRAG_VERT_ONLY("sampler2D", $1.line); + TQualifier qual = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; + TPublicType t = { EbtSampler2D, qual, 1, false, false, 0, $1.line }; + $$ = t; + } + | SAMPLER3D { + FRAG_VERT_ONLY("sampler3D", $1.line); + TQualifier qual = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; + TPublicType t = { EbtSampler3D, qual, 1, false, false, 0, $1.line }; + $$ = t; + } + | SAMPLERCUBE { + FRAG_VERT_ONLY("samplerCube", $1.line); + TQualifier qual = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; + TPublicType t = { EbtSamplerCube, qual, 1, false, false, 0, $1.line }; + $$ = t; + } + | SAMPLER1DSHADOW { + FRAG_VERT_ONLY("sampler1DShadow", $1.line); + TQualifier qual = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; + TPublicType t = { EbtSampler1DShadow, qual, 1, false, false, 0, $1.line }; + $$ = t; + } + | SAMPLER2DSHADOW { + FRAG_VERT_ONLY("sampler2DShadow", $1.line); + TQualifier qual = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; + TPublicType t = { EbtSampler2DShadow, qual, 1, false, false, 0, $1.line }; + $$ = t; + } + | struct_specifier { + FRAG_VERT_ONLY("struct", $1.line); + $$ = $1; + $$.qualifier = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; + } + | TYPE_NAME { + // + // This is for user defined type names. The lexical phase looked up the + // type. + // + TType& structure = static_cast($1.symbol)->getType(); + TQualifier qual = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; + TPublicType t = { EbtStruct, qual, 1, false, false, &structure, $1.line }; + $$ = t; + } + ; + +struct_specifier + : STRUCT IDENTIFIER LEFT_BRACE struct_declaration_list RIGHT_BRACE { + TType* structure = new TType($4, *$2.string); + TVariable* userTypeDef = new TVariable($2.string, *structure, true); + if (! parseContext.symbolTable.insert(*userTypeDef)) { + parseContext.error($2.line, "redefinition", $2.string->c_str(), "struct"); + parseContext.recover(); + } + TPublicType t = { EbtStruct, EvqTemporary, 1, false, false, structure, $1.line }; + $$ = t; + } + | STRUCT LEFT_BRACE struct_declaration_list RIGHT_BRACE { + TType* structure = new TType($3, TString("")); + TPublicType t = { EbtStruct, EvqTemporary, 1, false, false, structure, $1.line }; + $$ = t; + } + ; + +struct_declaration_list + : struct_declaration { + $$ = $1; + } + | struct_declaration_list struct_declaration { + $$ = $1; + for (unsigned int i = 0; i < $2->size(); ++i) { + for (unsigned int j = 0; j < $$->size(); ++j) { + if ((*$$)[j].type->getFieldName() == (*$2)[i].type->getFieldName()) { + parseContext.error((*$2)[i].line, "duplicate field name in structure:", "struct", (*$2)[i].type->getFieldName().c_str()); + parseContext.recover(); + } + } + $$->push_back((*$2)[i]); + } + } + ; + +struct_declaration + : type_specifier struct_declarator_list SEMICOLON { + $$ = $2; + + if (parseContext.voidErrorCheck($1.line, (*$2)[0].type->getFieldName(), $1)) { + parseContext.recover(); + } + for (unsigned int i = 0; i < $$->size(); ++i) { + // + // Careful not to replace already know aspects of type, like array-ness + // + (*$$)[i].type->setType($1.type, $1.size, $1.matrix, $1.userDef); + if ($1.userDef) + (*$$)[i].type->setTypeName($1.userDef->getTypeName()); + } + } + ; + +struct_declarator_list + : struct_declarator { + $$ = NewPoolTTypeList(); + $$->push_back($1); + } + | struct_declarator_list COMMA struct_declarator { + $$->push_back($3); + } + ; + +struct_declarator + : IDENTIFIER { + $$.type = new TType(EbtVoid); + $$.line = $1.line; + $$.type->setFieldName(*$1.string); + } + | IDENTIFIER LEFT_BRACKET constant_expression RIGHT_BRACKET { + $$.type = new TType(EbtVoid); + $$.line = $1.line; + $$.type->setFieldName(*$1.string); + + if ($3->getAsConstantUnion() == 0 || $3->getAsConstantUnion()->getBasicType() != EbtInt || + $3->getAsConstantUnion()->getUnionArrayPointer()->iConst <= 0) { + parseContext.error($2.line, "structure field array size must be a positive integer", $1.string->c_str(), ""); + parseContext.recover(); + } else { + $$.type->setArraySize($3->getAsConstantUnion()->getUnionArrayPointer()->iConst); + } + } + ; + +initializer + : assignment_expression { $$ = $1; } + ; + +declaration_statement + : declaration { $$ = $1; } + ; + +statement + : compound_statement { $$ = $1; } + | simple_statement { $$ = $1; } + ; + +// Grammar Note: No labeled statements; 'goto' is not supported. + +simple_statement + : declaration_statement { $$ = $1; } + | expression_statement { $$ = $1; } + | selection_statement { $$ = $1; } + | iteration_statement { $$ = $1; } + | jump_statement { $$ = $1; } + ; + +compound_statement + : LEFT_BRACE RIGHT_BRACE { $$ = 0; } + | LEFT_BRACE { parseContext.symbolTable.push(); } statement_list { parseContext.symbolTable.pop(); } RIGHT_BRACE { + if ($3 != 0) + $3->setOperator(EOpSequence); + $$ = $3; + } + ; + +statement_no_new_scope + : compound_statement_no_new_scope { $$ = $1; } + | simple_statement { $$ = $1; } + ; + +compound_statement_no_new_scope + // Statement that doesn't create a new scope, for selection_statement, iteration_statement + : LEFT_BRACE RIGHT_BRACE { + $$ = 0; + } + | LEFT_BRACE statement_list RIGHT_BRACE { + if ($2) + $2->setOperator(EOpSequence); + $$ = $2; + } + ; + +statement_list + : statement { + $$ = parseContext.intermediate.makeAggregate($1, 0); + } + | statement_list statement { + $$ = parseContext.intermediate.growAggregate($1, $2, 0); + } + ; + +expression_statement + : SEMICOLON { $$ = 0; } + | expression SEMICOLON { $$ = static_cast($1); } + ; + +selection_statement + : IF LEFT_PAREN expression RIGHT_PAREN selection_rest_statement { + if (parseContext.boolErrorCheck($1.line, $3)) + parseContext.recover(); + $$ = parseContext.intermediate.addSelection($3, $5, $1.line); + } + ; + +selection_rest_statement + : statement ELSE statement { + $$.node1 = $1; + $$.node2 = $3; + } + | statement { + $$.node1 = $1; + $$.node2 = 0; + } + ; + +// Grammar Note: No 'switch'. Switch statements not supported. + +condition + // In 1996 c++ draft, conditions can include single declarations + : expression { + $$ = $1; + if (parseContext.boolErrorCheck($1->getLine(), $1)) + parseContext.recover(); + } + | fully_specified_type IDENTIFIER EQUAL initializer { + TIntermNode* intermNode; + if (parseContext.structQualifierErrorCheck($2.line, $1)) + parseContext.recover(); + if (parseContext.boolErrorCheck($2.line, $1)) + parseContext.recover(); + + if (!parseContext.executeInitializer($2.line, *$2.string, $1, $4, intermNode)) + $$ = $4; + else { + parseContext.recover(); + $$ = 0; + } + } + ; + +iteration_statement + : WHILE LEFT_PAREN { parseContext.symbolTable.push(); ++parseContext.loopNestingLevel; } condition RIGHT_PAREN statement_no_new_scope { + parseContext.symbolTable.pop(); + $$ = parseContext.intermediate.addLoop($6, $4, 0, true, $1.line); + --parseContext.loopNestingLevel; + } + | DO { ++parseContext.loopNestingLevel; } statement WHILE LEFT_PAREN expression RIGHT_PAREN SEMICOLON { + if (parseContext.boolErrorCheck($8.line, $6)) + parseContext.recover(); + + $$ = parseContext.intermediate.addLoop($3, $6, 0, false, $4.line); + --parseContext.loopNestingLevel; + } + | FOR LEFT_PAREN { parseContext.symbolTable.push(); ++parseContext.loopNestingLevel; } for_init_statement for_rest_statement RIGHT_PAREN statement_no_new_scope { + parseContext.symbolTable.pop(); + $$ = parseContext.intermediate.makeAggregate($4, $2.line); + $$ = parseContext.intermediate.growAggregate( + $$, + parseContext.intermediate.addLoop($7, reinterpret_cast($5.node1), reinterpret_cast($5.node2), true, $1.line), + $1.line); + $$->getAsAggregate()->setOperator(EOpSequence); + --parseContext.loopNestingLevel; + } + ; + +for_init_statement + : expression_statement { + $$ = $1; + } + | declaration_statement { + $$ = $1; + } + ; + +conditionopt + : condition { + $$ = $1; + } + | /* May be null */ { + $$ = 0; + } + ; + +for_rest_statement + : conditionopt SEMICOLON { + $$.node1 = $1; + $$.node2 = 0; + } + | conditionopt SEMICOLON expression { + $$.node1 = $1; + $$.node2 = $3; + } + ; + +jump_statement + : CONTINUE SEMICOLON { + if (parseContext.loopNestingLevel <= 0) { + parseContext.error($1.line, "continue statement only allowed in loops", "", ""); + parseContext.recover(); + } + $$ = parseContext.intermediate.addBranch(EOpContinue, $1.line); + } + | BREAK SEMICOLON { + if (parseContext.loopNestingLevel <= 0) { + parseContext.error($1.line, "break statement only allowed in loops", "", ""); + parseContext.recover(); + } + $$ = parseContext.intermediate.addBranch(EOpBreak, $1.line); + } + | RETURN SEMICOLON { + $$ = parseContext.intermediate.addBranch(EOpReturn, $1.line); + if (parseContext.currentFunctionType->getBasicType() != EbtVoid) { + parseContext.error($1.line, "non-void function must return a value", "return", ""); + parseContext.recover(); + } + } + | RETURN expression SEMICOLON { + $$ = parseContext.intermediate.addBranch(EOpReturn, $2, $1.line); + parseContext.functionReturnsValue = true; + if (parseContext.currentFunctionType->getBasicType() == EbtVoid) { + parseContext.error($1.line, "void function cannot return a value", "return", ""); + parseContext.recover(); + } else if (*(parseContext.currentFunctionType) != $2->getType()) { + parseContext.error($1.line, "function return is not matching type:", "return", ""); + parseContext.recover(); + } + } + | DISCARD SEMICOLON { + FRAG_ONLY("discard", $1.line); + $$ = parseContext.intermediate.addBranch(EOpKill, $1.line); + } + ; + +// Grammar Note: No 'goto'. Gotos are not supported. + +translation_unit + : external_declaration { + $$ = $1; + parseContext.treeRoot = $$; + } + | translation_unit external_declaration { + $$ = parseContext.intermediate.growAggregate($1, $2, 0); + parseContext.treeRoot = $$; + } + ; + +external_declaration + : function_definition { + $$ = $1; + } + | declaration { + $$ = $1; + } + ; + +function_definition + : function_prototype { + TFunction& function = *($1.function); + TFunction* prevDec = static_cast(parseContext.symbolTable.find(function.getMangledName())); + // + // Note: 'prevDec' could be 'function' if this is the first time we've seen function + // as it would have just been put in the symbol table. Otherwise, we're looking up + // an earlier occurance. + // + if (prevDec->isDefined()) { + // + // Then this function already has a body. + // + parseContext.error($1.line, "function already has a body", function.getName().c_str(), ""); + parseContext.recover(); + } + prevDec->setDefined(); + + // + // Raise error message if main function takes any parameters or return anything other than void + // + if (function.getName() == "main") { + if (function.getParamCount() > 0) { + parseContext.error($1.line, "function cannot take any parameter(s)", function.getName().c_str(), ""); + parseContext.recover(); + } + if (function.getReturnType().getBasicType() != EbtVoid) { + parseContext.error($1.line, "", function.getReturnType().getBasicString(), "main function cannot return a value" ); + parseContext.recover(); + } + } + + // + // New symbol table scope for body of function plus its arguments + // + parseContext.symbolTable.push(); + + // + // Remember the return type for later checking for RETURN statements. + // + parseContext.currentFunctionType = &(prevDec->getReturnType()); + parseContext.functionReturnsValue = false; + + // + // Insert parameters into the symbol table. + // If the parameter has no name, it's not an error, just don't insert it + // (could be used for unused args). + // + // Also, accumulate the list of parameters into the HIL, so lower level code + // knows where to find parameters. + // + TIntermAggregate* paramNodes = new TIntermAggregate; + for (int i = 0; i < function.getParamCount(); i++) { + TParameter& param = function[i]; + if (param.name != 0) { + TVariable *variable = new TVariable(param.name, *param.type); + // + // Insert the parameters with name in the symbol table. + // + if (! parseContext.symbolTable.insert(*variable)) { + parseContext.error($1.line, "redefinition", variable->getName().c_str(), ""); + parseContext.recover(); + delete variable; + } + // + // Transfer ownership of name pointer to symbol table. + // + param.name = 0; + + // + // Add the parameter to the HIL + // + paramNodes = parseContext.intermediate.growAggregate( + paramNodes, + parseContext.intermediate.addSymbol(variable->getUniqueId(), + variable->getName(), + variable->getType(), $1.line), + $1.line); + } else { + paramNodes = parseContext.intermediate.growAggregate(paramNodes, parseContext.intermediate.addSymbol(0, "", *param.type, $1.line), $1.line); + } + } + parseContext.intermediate.setAggregateOperator(paramNodes, EOpParameters, $1.line); + $1.intermAggregate = paramNodes; + parseContext.loopNestingLevel = 0; + } + compound_statement_no_new_scope { + //?? Check that all paths return a value if return type != void ? + // May be best done as post process phase on intermediate code + if (parseContext.currentFunctionType->getBasicType() != EbtVoid && ! parseContext.functionReturnsValue) { + parseContext.error($1.line, "function does not return a value:", "", $1.function->getName().c_str()); + parseContext.recover(); + } + parseContext.symbolTable.pop(); + $$ = parseContext.intermediate.growAggregate($1.intermAggregate, $3, 0); + parseContext.intermediate.setAggregateOperator($$, EOpFunction, $1.line); + $$->getAsAggregate()->setName($1.function->getMangledName().c_str()); + $$->getAsAggregate()->setType($1.function->getReturnType()); + + // store the pragma information for debug and optimize and other vendor specific + // information. This information can be queried from the parse tree + $$->getAsAggregate()->setOptimize(parseContext.contextPragma.optimize); + $$->getAsAggregate()->setDebug(parseContext.contextPragma.debug); + $$->getAsAggregate()->addToPragmaTable(parseContext.contextPragma.pragmaTable); + } + ; + +%% -- cgit v1.2.3