diff options
Diffstat (limited to 'src/mesa/shader/slang/MachineIndependent/glslang.y')
| -rw-r--r-- | src/mesa/shader/slang/MachineIndependent/glslang.y | 2009 |
1 files changed, 0 insertions, 2009 deletions
diff --git a/src/mesa/shader/slang/MachineIndependent/glslang.y b/src/mesa/shader/slang/MachineIndependent/glslang.y deleted file mode 100644 index d2dc1db3769..00000000000 --- a/src/mesa/shader/slang/MachineIndependent/glslang.y +++ /dev/null @@ -1,2009 +0,0 @@ -//
-//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 <lex> ATTRIBUTE CONST_QUAL BOOL_TYPE FLOAT_TYPE INT_TYPE
-%token <lex> BREAK CONTINUE DO ELSE FOR IF DISCARD RETURN
-%token <lex> BVEC2 BVEC3 BVEC4 IVEC2 IVEC3 IVEC4 VEC2 VEC3 VEC4
-%token <lex> MATRIX2 MATRIX3 MATRIX4 IN_QUAL OUT_QUAL INOUT_QUAL UNIFORM VARYING
-%token <lex> STRUCT VOID_TYPE WHILE
-%token <lex> SAMPLER1D SAMPLER2D SAMPLER3D SAMPLERCUBE SAMPLER1DSHADOW SAMPLER2DSHADOW
-
-%token <lex> IDENTIFIER TYPE_NAME FLOATCONSTANT INTCONSTANT BOOLCONSTANT
-%token <lex> FIELD_SELECTION
-%token <lex> LEFT_OP RIGHT_OP
-%token <lex> INC_OP DEC_OP LE_OP GE_OP EQ_OP NE_OP
-%token <lex> AND_OP OR_OP XOR_OP MUL_ASSIGN DIV_ASSIGN ADD_ASSIGN
-%token <lex> MOD_ASSIGN LEFT_ASSIGN RIGHT_ASSIGN AND_ASSIGN XOR_ASSIGN OR_ASSIGN
-%token <lex> SUB_ASSIGN
-
-%token <lex> LEFT_PAREN RIGHT_PAREN LEFT_BRACKET RIGHT_BRACKET LEFT_BRACE RIGHT_BRACE DOT
-%token <lex> COMMA COLON EQUAL SEMICOLON BANG DASH TILDE PLUS STAR SLASH PERCENT
-%token <lex> LEFT_ANGLE RIGHT_ANGLE VERTICAL_BAR CARET AMPERSAND QUESTION
-
-%type <interm> assignment_operator constructor_identifier unary_operator
-%type <interm.intermTypedNode> variable_identifier primary_expression postfix_expression
-%type <interm.intermTypedNode> expression integer_expression assignment_expression
-%type <interm.intermTypedNode> unary_expression multiplicative_expression additive_expression
-%type <interm.intermTypedNode> relational_expression equality_expression
-%type <interm.intermTypedNode> conditional_expression constant_expression
-%type <interm.intermTypedNode> logical_or_expression logical_xor_expression logical_and_expression
-%type <interm.intermTypedNode> shift_expression and_expression exclusive_or_expression inclusive_or_expression
-%type <interm.intermTypedNode> function_call initializer condition conditionopt
-
-%type <interm.intermNode> translation_unit function_definition
-%type <interm.intermNode> statement simple_statement
-%type <interm.intermAggregate> statement_list compound_statement
-%type <interm.intermNode> declaration_statement selection_statement expression_statement
-%type <interm.intermNode> declaration external_declaration
-%type <interm.intermNode> for_init_statement compound_statement_no_new_scope
-%type <interm.nodePair> selection_rest_statement for_rest_statement
-%type <interm.intermNode> iteration_statement jump_statement statement_no_new_scope
-%type <interm> single_declaration init_declarator_list
-
-%type <interm> parameter_declaration parameter_declarator parameter_type_specifier
-%type <interm.qualifier> parameter_qualifier
-
-%type <interm.type> type_qualifier fully_specified_type type_specifier
-%type <interm.type> struct_specifier
-%type <interm.typeLine> struct_declarator
-%type <interm.typeList> struct_declarator_list struct_declaration struct_declaration_list
-%type <interm.function> function_header function_declarator function_identifier
-%type <interm.function> function_header_with_parameters function_call_header
-%type <interm> 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<const TVariable*>(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<TIntermTyped*>($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<TVariable*>($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<TFunction*>(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 <interm> buffer_declaration
-//%type <interm.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;
- $$.qualifier = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary;
- }
- | TYPE_NAME {
- //
- // This is for user defined type names. The lexical phase looked up the
- // type.
- //
- TType& structure = static_cast<TVariable*>($1.symbol)->getType();
- TQualifier qual = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary;
- TPublicType t = { EbtStruct, qual, 1, false, false, &structure, $1.line };
- $$ = 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<TIntermNode*>($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(
- $$,
- parseContext.intermediate.addLoop($7, reinterpret_cast<TIntermTyped*>($5.node1), reinterpret_cast<TIntermTyped*>($5.node2), true, $1.line),
- $1.line);
- $$->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<TFunction*>(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);
- }
- ;
-
-%%
|