+// Copyright 2016 The SwiftShader Authors. All Rights Reserved.
//
-// Copyright (c) 2002-2013 The ANGLE Project Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
#include "ParseHelper.h"
//
////////////////////////////////////////////////////////////////////////
+namespace
+{
+ bool IsVaryingOut(TQualifier qualifier)
+ {
+ switch(qualifier)
+ {
+ case EvqVaryingOut:
+ case EvqSmoothOut:
+ case EvqFlatOut:
+ case EvqCentroidOut:
+ case EvqVertexOut:
+ return true;
+
+ default: break;
+ }
+
+ return false;
+ }
+
+ bool IsVaryingIn(TQualifier qualifier)
+ {
+ switch(qualifier)
+ {
+ case EvqVaryingIn:
+ case EvqSmoothIn:
+ case EvqFlatIn:
+ case EvqCentroidIn:
+ case EvqFragmentIn:
+ return true;
+
+ default: break;
+ }
+
+ return false;
+ }
+
+ bool IsVarying(TQualifier qualifier)
+ {
+ return IsVaryingIn(qualifier) || IsVaryingOut(qualifier);
+ }
+
+ bool IsAssignment(TOperator op)
+ {
+ switch(op)
+ {
+ case EOpPostIncrement:
+ case EOpPostDecrement:
+ case EOpPreIncrement:
+ case EOpPreDecrement:
+ case EOpAssign:
+ case EOpAddAssign:
+ case EOpSubAssign:
+ case EOpMulAssign:
+ case EOpVectorTimesMatrixAssign:
+ case EOpVectorTimesScalarAssign:
+ case EOpMatrixTimesScalarAssign:
+ case EOpMatrixTimesMatrixAssign:
+ case EOpDivAssign:
+ case EOpIModAssign:
+ case EOpBitShiftLeftAssign:
+ case EOpBitShiftRightAssign:
+ case EOpBitwiseAndAssign:
+ case EOpBitwiseXorAssign:
+ case EOpBitwiseOrAssign:
+ return true;
+ default:
+ return false;
+ }
+ }
+}
+
//
// Look at a '.' field selector string and change it into offsets
// for a vector.
//
bool TParseContext::parseVectorFields(const TString& compString, int vecSize, TVectorFields& fields, const TSourceLoc &line)
{
- fields.num = (int) compString.size();
- if (fields.num > 4) {
- error(line, "illegal vector field selection", compString.c_str());
- return false;
- }
-
- enum {
- exyzw,
- ergba,
- estpq
- } fieldSet[4];
-
- for (int i = 0; i < fields.num; ++i) {
- switch (compString[i]) {
- case 'x':
- fields.offsets[i] = 0;
- fieldSet[i] = exyzw;
- break;
- case 'r':
- fields.offsets[i] = 0;
- fieldSet[i] = ergba;
- break;
- case 's':
- fields.offsets[i] = 0;
- fieldSet[i] = estpq;
- break;
- case 'y':
- fields.offsets[i] = 1;
- fieldSet[i] = exyzw;
- break;
- case 'g':
- fields.offsets[i] = 1;
- fieldSet[i] = ergba;
- break;
- case 't':
- fields.offsets[i] = 1;
- fieldSet[i] = estpq;
- break;
- case 'z':
- fields.offsets[i] = 2;
- fieldSet[i] = exyzw;
- break;
- case 'b':
- fields.offsets[i] = 2;
- fieldSet[i] = ergba;
- break;
- case 'p':
- fields.offsets[i] = 2;
- fieldSet[i] = estpq;
- break;
- case 'w':
- fields.offsets[i] = 3;
- fieldSet[i] = exyzw;
- break;
- case 'a':
- fields.offsets[i] = 3;
- fieldSet[i] = ergba;
- break;
- case 'q':
- fields.offsets[i] = 3;
- fieldSet[i] = estpq;
- break;
- default:
- error(line, "illegal vector field selection", compString.c_str());
- return false;
- }
- }
-
- for (int i = 0; i < fields.num; ++i) {
- if (fields.offsets[i] >= vecSize) {
- error(line, "vector field selection out of range", compString.c_str());
- return false;
- }
-
- if (i > 0) {
- if (fieldSet[i] != fieldSet[i-1]) {
- error(line, "illegal - vector component fields not from the same set", compString.c_str());
- return false;
- }
- }
- }
-
- return true;
+ fields.num = (int) compString.size();
+ if (fields.num > 4) {
+ error(line, "illegal vector field selection", compString.c_str());
+ return false;
+ }
+
+ enum {
+ exyzw,
+ ergba,
+ estpq
+ } fieldSet[4];
+
+ for (int i = 0; i < fields.num; ++i) {
+ switch (compString[i]) {
+ case 'x':
+ fields.offsets[i] = 0;
+ fieldSet[i] = exyzw;
+ break;
+ case 'r':
+ fields.offsets[i] = 0;
+ fieldSet[i] = ergba;
+ break;
+ case 's':
+ fields.offsets[i] = 0;
+ fieldSet[i] = estpq;
+ break;
+ case 'y':
+ fields.offsets[i] = 1;
+ fieldSet[i] = exyzw;
+ break;
+ case 'g':
+ fields.offsets[i] = 1;
+ fieldSet[i] = ergba;
+ break;
+ case 't':
+ fields.offsets[i] = 1;
+ fieldSet[i] = estpq;
+ break;
+ case 'z':
+ fields.offsets[i] = 2;
+ fieldSet[i] = exyzw;
+ break;
+ case 'b':
+ fields.offsets[i] = 2;
+ fieldSet[i] = ergba;
+ break;
+ case 'p':
+ fields.offsets[i] = 2;
+ fieldSet[i] = estpq;
+ break;
+ case 'w':
+ fields.offsets[i] = 3;
+ fieldSet[i] = exyzw;
+ break;
+ case 'a':
+ fields.offsets[i] = 3;
+ fieldSet[i] = ergba;
+ break;
+ case 'q':
+ fields.offsets[i] = 3;
+ fieldSet[i] = estpq;
+ break;
+ default:
+ error(line, "illegal vector field selection", compString.c_str());
+ return false;
+ }
+ }
+
+ for (int i = 0; i < fields.num; ++i) {
+ if (fields.offsets[i] >= vecSize) {
+ error(line, "vector field selection out of range", compString.c_str());
+ return false;
+ }
+
+ if (i > 0) {
+ if (fieldSet[i] != fieldSet[i-1]) {
+ error(line, "illegal - vector component fields not from the same set", compString.c_str());
+ return false;
+ }
+ }
+ }
+
+ return true;
}
//
bool TParseContext::parseMatrixFields(const TString& compString, int matCols, int matRows, TMatrixFields& fields, const TSourceLoc &line)
{
- fields.wholeRow = false;
- fields.wholeCol = false;
- fields.row = -1;
- fields.col = -1;
-
- if (compString.size() != 2) {
- error(line, "illegal length of matrix field selection", compString.c_str());
- return false;
- }
-
- if (compString[0] == '_') {
- if (compString[1] < '0' || compString[1] > '3') {
- error(line, "illegal matrix field selection", compString.c_str());
- return false;
- }
- fields.wholeCol = true;
- fields.col = compString[1] - '0';
- } else if (compString[1] == '_') {
- if (compString[0] < '0' || compString[0] > '3') {
- error(line, "illegal matrix field selection", compString.c_str());
- return false;
- }
- fields.wholeRow = true;
- fields.row = compString[0] - '0';
- } else {
- if (compString[0] < '0' || compString[0] > '3' ||
- compString[1] < '0' || compString[1] > '3') {
- error(line, "illegal matrix field selection", compString.c_str());
- return false;
- }
- fields.row = compString[0] - '0';
- fields.col = compString[1] - '0';
- }
-
- if (fields.row >= matRows || fields.col >= matCols) {
- error(line, "matrix field selection out of range", compString.c_str());
- return false;
- }
-
- return true;
+ fields.wholeRow = false;
+ fields.wholeCol = false;
+ fields.row = -1;
+ fields.col = -1;
+
+ if (compString.size() != 2) {
+ error(line, "illegal length of matrix field selection", compString.c_str());
+ return false;
+ }
+
+ if (compString[0] == '_') {
+ if (compString[1] < '0' || compString[1] > '3') {
+ error(line, "illegal matrix field selection", compString.c_str());
+ return false;
+ }
+ fields.wholeCol = true;
+ fields.col = compString[1] - '0';
+ } else if (compString[1] == '_') {
+ if (compString[0] < '0' || compString[0] > '3') {
+ error(line, "illegal matrix field selection", compString.c_str());
+ return false;
+ }
+ fields.wholeRow = true;
+ fields.row = compString[0] - '0';
+ } else {
+ if (compString[0] < '0' || compString[0] > '3' ||
+ compString[1] < '0' || compString[1] > '3') {
+ error(line, "illegal matrix field selection", compString.c_str());
+ return false;
+ }
+ fields.row = compString[0] - '0';
+ fields.col = compString[1] - '0';
+ }
+
+ if (fields.row >= matRows || fields.col >= matCols) {
+ error(line, "matrix field selection out of range", compString.c_str());
+ return false;
+ }
+
+ return true;
}
///////////////////////////////////////////////////////////////////////
// Used by flex/bison to output all syntax and parsing errors.
//
void TParseContext::error(const TSourceLoc& loc,
- const char* reason, const char* token,
- const char* extraInfo)
+ const char* reason, const char* token,
+ const char* extraInfo)
{
- pp::SourceLocation srcLoc(loc.first_file, loc.first_line);
- mDiagnostics.writeInfo(pp::Diagnostics::PP_ERROR,
- srcLoc, reason, token, extraInfo);
+ pp::SourceLocation srcLoc(loc.first_file, loc.first_line);
+ mDiagnostics.writeInfo(pp::Diagnostics::PP_ERROR,
+ srcLoc, reason, token, extraInfo);
}
void TParseContext::warning(const TSourceLoc& loc,
- const char* reason, const char* token,
- const char* extraInfo) {
- pp::SourceLocation srcLoc(loc.first_file, loc.first_line);
- mDiagnostics.writeInfo(pp::Diagnostics::PP_WARNING,
- srcLoc, reason, token, extraInfo);
+ const char* reason, const char* token,
+ const char* extraInfo) {
+ pp::SourceLocation srcLoc(loc.first_file, loc.first_line);
+ mDiagnostics.writeInfo(pp::Diagnostics::PP_WARNING,
+ srcLoc, reason, token, extraInfo);
}
void TParseContext::trace(const char* str)
{
- mDiagnostics.writeDebug(str);
+ mDiagnostics.writeDebug(str);
}
//
//
void TParseContext::assignError(const TSourceLoc &line, const char* op, TString left, TString right)
{
- std::stringstream extraInfoStream;
- extraInfoStream << "cannot convert from '" << right << "' to '" << left << "'";
- std::string extraInfo = extraInfoStream.str();
- error(line, "", op, extraInfo.c_str());
+ std::stringstream extraInfoStream;
+ extraInfoStream << "cannot convert from '" << right << "' to '" << left << "'";
+ std::string extraInfo = extraInfoStream.str();
+ error(line, "", op, extraInfo.c_str());
}
//
//
void TParseContext::unaryOpError(const TSourceLoc &line, const char* op, TString operand)
{
- std::stringstream extraInfoStream;
- extraInfoStream << "no operation '" << op << "' exists that takes an operand of type " << operand
- << " (or there is no acceptable conversion)";
- std::string extraInfo = extraInfoStream.str();
- error(line, " wrong operand type", op, extraInfo.c_str());
+ std::stringstream extraInfoStream;
+ extraInfoStream << "no operation '" << op << "' exists that takes an operand of type " << operand
+ << " (or there is no acceptable conversion)";
+ std::string extraInfo = extraInfoStream.str();
+ error(line, " wrong operand type", op, extraInfo.c_str());
}
//
//
void TParseContext::binaryOpError(const TSourceLoc &line, const char* op, TString left, TString right)
{
- std::stringstream extraInfoStream;
- extraInfoStream << "no operation '" << op << "' exists that takes a left-hand operand of type '" << left
- << "' and a right operand of type '" << right << "' (or there is no acceptable conversion)";
- std::string extraInfo = extraInfoStream.str();
- error(line, " wrong operand types ", op, extraInfo.c_str());
+ std::stringstream extraInfoStream;
+ extraInfoStream << "no operation '" << op << "' exists that takes a left-hand operand of type '" << left
+ << "' and a right operand of type '" << right << "' (or there is no acceptable conversion)";
+ std::string extraInfo = extraInfoStream.str();
+ error(line, " wrong operand types ", op, extraInfo.c_str());
}
bool TParseContext::precisionErrorCheck(const TSourceLoc &line, TPrecision precision, TBasicType type){
- if (!mChecksPrecisionErrors)
- return false;
- switch( type ){
- case EbtFloat:
- if( precision == EbpUndefined ){
- error( line, "No precision specified for (float)", "" );
- return true;
- }
- break;
- case EbtInt:
- if( precision == EbpUndefined ){
- error( line, "No precision specified (int)", "" );
- return true;
- }
- break;
- default:
- return false;
- }
- return false;
+ if (!mChecksPrecisionErrors)
+ return false;
+ switch( type ){
+ case EbtFloat:
+ if( precision == EbpUndefined ){
+ error( line, "No precision specified for (float)", "" );
+ return true;
+ }
+ break;
+ case EbtInt:
+ if( precision == EbpUndefined ){
+ error( line, "No precision specified (int)", "" );
+ return true;
+ }
+ break;
+ default:
+ return false;
+ }
+ return false;
}
//
//
bool TParseContext::lValueErrorCheck(const TSourceLoc &line, const char* op, TIntermTyped* node)
{
- TIntermSymbol* symNode = node->getAsSymbolNode();
- TIntermBinary* binaryNode = node->getAsBinaryNode();
-
- if (binaryNode) {
- bool errorReturn;
-
- switch(binaryNode->getOp()) {
- case EOpIndexDirect:
- case EOpIndexIndirect:
- case EOpIndexDirectStruct:
- return lValueErrorCheck(line, op, binaryNode->getLeft());
- case EOpVectorSwizzle:
- errorReturn = lValueErrorCheck(line, op, binaryNode->getLeft());
- if (!errorReturn) {
- int offset[4] = {0,0,0,0};
-
- TIntermTyped* rightNode = binaryNode->getRight();
- TIntermAggregate *aggrNode = rightNode->getAsAggregate();
-
- for (TIntermSequence::iterator p = aggrNode->getSequence().begin();
- p != aggrNode->getSequence().end(); p++) {
- int value = (*p)->getAsTyped()->getAsConstantUnion()->getIConst(0);
- offset[value]++;
- if (offset[value] > 1) {
- error(line, " l-value of swizzle cannot have duplicate components", op);
-
- return true;
- }
- }
- }
-
- return errorReturn;
- default:
- break;
- }
- error(line, " l-value required", op);
-
- return true;
- }
-
-
- const char* symbol = 0;
- if (symNode != 0)
- symbol = symNode->getSymbol().c_str();
-
- const char* message = 0;
- switch (node->getQualifier()) {
- case EvqConstExpr: message = "can't modify a const"; break;
- case EvqConstReadOnly: message = "can't modify a const"; break;
- case EvqAttribute: message = "can't modify an attribute"; break;
- case EvqFragmentIn: message = "can't modify an input"; break;
- case EvqVertexIn: message = "can't modify an input"; break;
- case EvqUniform: message = "can't modify a uniform"; break;
- case EvqSmoothIn:
- case EvqFlatIn:
- case EvqCentroidIn:
- case EvqVaryingIn: message = "can't modify a varying"; break;
- case EvqInput: message = "can't modify an input"; break;
- case EvqFragCoord: message = "can't modify gl_FragCoord"; break;
- case EvqFrontFacing: message = "can't modify gl_FrontFacing"; break;
- case EvqPointCoord: message = "can't modify gl_PointCoord"; break;
- case EvqInstanceID: message = "can't modify gl_InstanceID"; break;
- default:
-
- //
- // Type that can't be written to?
- //
- if(IsSampler(node->getBasicType()))
- {
- message = "can't modify a sampler";
- }
- else if(node->getBasicType() == EbtVoid)
- {
- message = "can't modify void";
- }
- }
-
- if (message == 0 && binaryNode == 0 && symNode == 0) {
- error(line, " l-value required", op);
-
- return true;
- }
-
-
- //
- // Everything else is okay, no error.
- //
- if (message == 0)
- return false;
-
- //
- // If we get here, we have an error and a message.
- //
- if (symNode) {
- std::stringstream extraInfoStream;
- extraInfoStream << "\"" << symbol << "\" (" << message << ")";
- std::string extraInfo = extraInfoStream.str();
- error(line, " l-value required", op, extraInfo.c_str());
- }
- else {
- std::stringstream extraInfoStream;
- extraInfoStream << "(" << message << ")";
- std::string extraInfo = extraInfoStream.str();
- error(line, " l-value required", op, extraInfo.c_str());
- }
-
- return true;
+ TIntermSymbol* symNode = node->getAsSymbolNode();
+ TIntermBinary* binaryNode = node->getAsBinaryNode();
+
+ if (binaryNode) {
+ bool errorReturn;
+
+ switch(binaryNode->getOp()) {
+ case EOpIndexDirect:
+ case EOpIndexIndirect:
+ case EOpIndexDirectStruct:
+ case EOpIndexDirectInterfaceBlock:
+ return lValueErrorCheck(line, op, binaryNode->getLeft());
+ case EOpVectorSwizzle:
+ errorReturn = lValueErrorCheck(line, op, binaryNode->getLeft());
+ if (!errorReturn) {
+ int offset[4] = {0,0,0,0};
+
+ TIntermTyped* rightNode = binaryNode->getRight();
+ TIntermAggregate *aggrNode = rightNode->getAsAggregate();
+
+ for (TIntermSequence::iterator p = aggrNode->getSequence().begin();
+ p != aggrNode->getSequence().end(); p++) {
+ int value = (*p)->getAsTyped()->getAsConstantUnion()->getIConst(0);
+ offset[value]++;
+ if (offset[value] > 1) {
+ error(line, " l-value of swizzle cannot have duplicate components", op);
+
+ return true;
+ }
+ }
+ }
+
+ return errorReturn;
+ default:
+ break;
+ }
+ error(line, " l-value required", op);
+
+ return true;
+ }
+
+
+ const char* symbol = 0;
+ if (symNode != 0)
+ symbol = symNode->getSymbol().c_str();
+
+ const char* message = 0;
+ switch (node->getQualifier()) {
+ case EvqConstExpr: message = "can't modify a const"; break;
+ case EvqConstReadOnly: message = "can't modify a const"; break;
+ case EvqAttribute: message = "can't modify an attribute"; break;
+ case EvqFragmentIn: message = "can't modify an input"; break;
+ case EvqVertexIn: message = "can't modify an input"; break;
+ case EvqUniform: message = "can't modify a uniform"; break;
+ case EvqSmoothIn:
+ case EvqFlatIn:
+ case EvqCentroidIn:
+ case EvqVaryingIn: message = "can't modify a varying"; break;
+ case EvqInput: message = "can't modify an input"; break;
+ case EvqFragCoord: message = "can't modify gl_FragCoord"; break;
+ case EvqFrontFacing: message = "can't modify gl_FrontFacing"; break;
+ case EvqPointCoord: message = "can't modify gl_PointCoord"; break;
+ case EvqInstanceID: message = "can't modify gl_InstanceID"; break;
+ case EvqVertexID: message = "can't modify gl_VertexID"; break;
+ default:
+
+ //
+ // Type that can't be written to?
+ //
+ if(IsSampler(node->getBasicType()))
+ {
+ message = "can't modify a sampler";
+ }
+ else if(node->getBasicType() == EbtVoid)
+ {
+ message = "can't modify void";
+ }
+ }
+
+ if (message == 0 && binaryNode == 0 && symNode == 0) {
+ error(line, " l-value required", op);
+
+ return true;
+ }
+
+
+ //
+ // Everything else is okay, no error.
+ //
+ if (message == 0)
+ return false;
+
+ //
+ // If we get here, we have an error and a message.
+ //
+ if (symNode) {
+ std::stringstream extraInfoStream;
+ extraInfoStream << "\"" << symbol << "\" (" << message << ")";
+ std::string extraInfo = extraInfoStream.str();
+ error(line, " l-value required", op, extraInfo.c_str());
+ }
+ else {
+ std::stringstream extraInfoStream;
+ extraInfoStream << "(" << message << ")";
+ std::string extraInfo = extraInfoStream.str();
+ error(line, " l-value required", op, extraInfo.c_str());
+ }
+
+ return true;
}
//
//
bool TParseContext::constErrorCheck(TIntermTyped* node)
{
- if (node->getQualifier() == EvqConstExpr)
- return false;
+ if (node->getQualifier() == EvqConstExpr)
+ return false;
- error(node->getLine(), "constant expression required", "");
+ error(node->getLine(), "constant expression required", "");
- return true;
+ return true;
}
//
//
bool TParseContext::integerErrorCheck(TIntermTyped* node, const char* token)
{
- if (node->isScalarInt())
- return false;
+ if (node->isScalarInt())
+ return false;
- error(node->getLine(), "integer expression required", token);
+ error(node->getLine(), "integer expression required", token);
- return true;
+ return true;
}
//
//
bool TParseContext::globalErrorCheck(const TSourceLoc &line, bool global, const char* token)
{
- if (global)
- return false;
+ if (global)
+ return false;
- error(line, "only allowed at global scope", token);
+ error(line, "only allowed at global scope", token);
- return true;
+ return true;
}
//
//
bool TParseContext::reservedErrorCheck(const TSourceLoc &line, const TString& identifier)
{
- static const char* reservedErrMsg = "reserved built-in name";
- if (!symbolTable.atBuiltInLevel()) {
- if (identifier.compare(0, 3, "gl_") == 0) {
- error(line, reservedErrMsg, "gl_");
- return true;
- }
- if (identifier.find("__") != TString::npos) {
- error(line, "identifiers containing two consecutive underscores (__) are reserved as possible future keywords", identifier.c_str());
- return true;
- }
- }
+ static const char* reservedErrMsg = "reserved built-in name";
+ if (!symbolTable.atBuiltInLevel()) {
+ if (identifier.compare(0, 3, "gl_") == 0) {
+ error(line, reservedErrMsg, "gl_");
+ return true;
+ }
+ if (identifier.find("__") != TString::npos) {
+ error(line, "identifiers containing two consecutive underscores (__) are reserved as possible future keywords", identifier.c_str());
+ return true;
+ }
+ }
- return false;
+ return false;
}
//
//
bool TParseContext::constructorErrorCheck(const TSourceLoc &line, TIntermNode* node, TFunction& function, TOperator op, TType* type)
{
- *type = function.getReturnType();
-
- bool constructingMatrix = false;
- switch(op) {
- case EOpConstructMat2:
- case EOpConstructMat2x3:
- case EOpConstructMat2x4:
- case EOpConstructMat3x2:
- case EOpConstructMat3:
- case EOpConstructMat3x4:
- case EOpConstructMat4x2:
- case EOpConstructMat4x3:
- case EOpConstructMat4:
- constructingMatrix = true;
- break;
- default:
- break;
- }
-
- //
- // Note: It's okay to have too many components available, but not okay to have unused
- // arguments. 'full' will go to true when enough args have been seen. If we loop
- // again, there is an extra argument, so 'overfull' will become true.
- //
-
- int size = 0;
- bool constType = true;
- bool full = false;
- bool overFull = false;
- bool matrixInMatrix = false;
- bool arrayArg = false;
- for (size_t i = 0; i < function.getParamCount(); ++i) {
- const TParameter& param = function.getParam(i);
- size += param.type->getObjectSize();
-
- if (constructingMatrix && param.type->isMatrix())
- matrixInMatrix = true;
- if (full)
- overFull = true;
- if (op != EOpConstructStruct && !type->isArray() && size >= type->getObjectSize())
- full = true;
- if (param.type->getQualifier() != EvqConstExpr)
- constType = false;
- if (param.type->isArray())
- arrayArg = true;
- }
-
- if (constType)
- type->setQualifier(EvqConstExpr);
-
- if(type->isArray()) {
- if(type->getArraySize() == 0) {
- type->setArraySize(function.getParamCount());
- } else if(type->getArraySize() != (int)function.getParamCount()) {
- error(line, "array constructor needs one argument per array element", "constructor");
- return true;
- }
- }
-
- if (arrayArg && op != EOpConstructStruct) {
- error(line, "constructing from a non-dereferenced array", "constructor");
- return true;
- }
-
- if (matrixInMatrix && !type->isArray()) {
- if (function.getParamCount() != 1) {
- error(line, "constructing matrix from matrix can only take one argument", "constructor");
- return true;
- }
- }
-
- if (overFull) {
- error(line, "too many arguments", "constructor");
- return true;
- }
-
- if (op == EOpConstructStruct && !type->isArray() && type->getStruct()->fields().size() != function.getParamCount()) {
- error(line, "Number of constructor parameters does not match the number of structure fields", "constructor");
- return true;
- }
-
- if (!type->isMatrix() || !matrixInMatrix) {
- if ((op != EOpConstructStruct && size != 1 && size < type->getObjectSize()) ||
- (op == EOpConstructStruct && size < type->getObjectSize())) {
- error(line, "not enough data provided for construction", "constructor");
- return true;
- }
- }
-
- TIntermTyped *typed = node ? node->getAsTyped() : 0;
- if (typed == 0) {
- error(line, "constructor argument does not have a type", "constructor");
- return true;
- }
- if (op != EOpConstructStruct && IsSampler(typed->getBasicType())) {
- error(line, "cannot convert a sampler", "constructor");
- return true;
- }
- if (typed->getBasicType() == EbtVoid) {
- error(line, "cannot convert a void", "constructor");
- return true;
- }
-
- return false;
+ *type = function.getReturnType();
+
+ bool constructingMatrix = false;
+ switch(op) {
+ case EOpConstructMat2:
+ case EOpConstructMat2x3:
+ case EOpConstructMat2x4:
+ case EOpConstructMat3x2:
+ case EOpConstructMat3:
+ case EOpConstructMat3x4:
+ case EOpConstructMat4x2:
+ case EOpConstructMat4x3:
+ case EOpConstructMat4:
+ constructingMatrix = true;
+ break;
+ default:
+ break;
+ }
+
+ //
+ // Note: It's okay to have too many components available, but not okay to have unused
+ // arguments. 'full' will go to true when enough args have been seen. If we loop
+ // again, there is an extra argument, so 'overfull' will become true.
+ //
+
+ size_t size = 0;
+ bool full = false;
+ bool overFull = false;
+ bool matrixInMatrix = false;
+ bool arrayArg = false;
+ for (size_t i = 0; i < function.getParamCount(); ++i) {
+ const TParameter& param = function.getParam(i);
+ size += param.type->getObjectSize();
+
+ if (constructingMatrix && param.type->isMatrix())
+ matrixInMatrix = true;
+ if (full)
+ overFull = true;
+ if (op != EOpConstructStruct && !type->isArray() && size >= type->getObjectSize())
+ full = true;
+ if (param.type->isArray())
+ arrayArg = true;
+ }
+
+ if(type->isArray()) {
+ if(type->getArraySize() == 0) {
+ type->setArraySize(function.getParamCount());
+ } else if(type->getArraySize() != (int)function.getParamCount()) {
+ error(line, "array constructor needs one argument per array element", "constructor");
+ return true;
+ }
+ }
+
+ if (arrayArg && op != EOpConstructStruct) {
+ error(line, "constructing from a non-dereferenced array", "constructor");
+ return true;
+ }
+
+ if (matrixInMatrix && !type->isArray()) {
+ if (function.getParamCount() != 1) {
+ error(line, "constructing matrix from matrix can only take one argument", "constructor");
+ return true;
+ }
+ }
+
+ if (overFull) {
+ error(line, "too many arguments", "constructor");
+ return true;
+ }
+
+ if (op == EOpConstructStruct && !type->isArray() && type->getStruct()->fields().size() != function.getParamCount()) {
+ error(line, "Number of constructor parameters does not match the number of structure fields", "constructor");
+ return true;
+ }
+
+ if (!type->isMatrix() || !matrixInMatrix) {
+ if ((op != EOpConstructStruct && size != 1 && size < type->getObjectSize()) ||
+ (op == EOpConstructStruct && size < type->getObjectSize())) {
+ error(line, "not enough data provided for construction", "constructor");
+ return true;
+ }
+ }
+
+ TIntermTyped *typed = node ? node->getAsTyped() : 0;
+ if (typed == 0) {
+ error(line, "constructor argument does not have a type", "constructor");
+ return true;
+ }
+ if (op != EOpConstructStruct && IsSampler(typed->getBasicType())) {
+ error(line, "cannot convert a sampler", "constructor");
+ return true;
+ }
+ if (typed->getBasicType() == EbtVoid) {
+ error(line, "cannot convert a void", "constructor");
+ return true;
+ }
+
+ return false;
}
// This function checks to see if a void variable has been declared and raise an error message for such a case
//
bool TParseContext::voidErrorCheck(const TSourceLoc &line, const TString& identifier, const TBasicType& type)
{
- if(type == EbtVoid) {
- error(line, "illegal use of type 'void'", identifier.c_str());
- return true;
- }
+ if(type == EbtVoid) {
+ error(line, "illegal use of type 'void'", identifier.c_str());
+ return true;
+ }
- return false;
+ return false;
}
// This function checks to see if the node (for the expression) contains a scalar boolean expression or not
//
bool TParseContext::boolErrorCheck(const TSourceLoc &line, const TIntermTyped* type)
{
- if (type->getBasicType() != EbtBool || type->isArray() || type->isMatrix() || type->isVector()) {
- error(line, "boolean expression expected", "");
- return true;
- }
+ if (type->getBasicType() != EbtBool || type->isArray() || type->isMatrix() || type->isVector()) {
+ error(line, "boolean expression expected", "");
+ return true;
+ }
- return false;
+ return false;
}
// This function checks to see if the node (for the expression) contains a scalar boolean expression or not
//
bool TParseContext::boolErrorCheck(const TSourceLoc &line, const TPublicType& pType)
{
- if (pType.type != EbtBool || pType.array || (pType.primarySize > 1) || (pType.secondarySize > 1)) {
- error(line, "boolean expression expected", "");
- return true;
- }
+ if (pType.type != EbtBool || pType.array || (pType.primarySize > 1) || (pType.secondarySize > 1)) {
+ error(line, "boolean expression expected", "");
+ return true;
+ }
- return false;
+ return false;
}
bool TParseContext::samplerErrorCheck(const TSourceLoc &line, const TPublicType& pType, const char* reason)
{
- if (pType.type == EbtStruct) {
- if (containsSampler(*pType.userDef)) {
- error(line, reason, getBasicString(pType.type), "(structure contains a sampler)");
+ if (pType.type == EbtStruct) {
+ if (containsSampler(*pType.userDef)) {
+ error(line, reason, getBasicString(pType.type), "(structure contains a sampler)");
- return true;
- }
+ return true;
+ }
- return false;
- } else if (IsSampler(pType.type)) {
- error(line, reason, getBasicString(pType.type));
+ return false;
+ } else if (IsSampler(pType.type)) {
+ error(line, reason, getBasicString(pType.type));
- return true;
- }
+ return true;
+ }
- return false;
+ return false;
}
bool TParseContext::structQualifierErrorCheck(const TSourceLoc &line, const TPublicType& pType)
break;
}
- if (pType.qualifier != EvqUniform && samplerErrorCheck(line, pType, "samplers must be uniform"))
- return true;
+ if (pType.qualifier != EvqUniform && samplerErrorCheck(line, pType, "samplers must be uniform"))
+ return true;
// check for layout qualifier issues
- const TLayoutQualifier layoutQualifier = pType.layoutQualifier;
-
if (pType.qualifier != EvqVertexIn && pType.qualifier != EvqFragmentOut &&
- layoutLocationErrorCheck(line, pType.layoutQualifier))
+ layoutLocationErrorCheck(line, pType.layoutQualifier))
{
return true;
}
- return false;
+ return false;
}
// These checks are common for all declarations starting a declarator list, and declarators that follow an empty
bool TParseContext::parameterSamplerErrorCheck(const TSourceLoc &line, TQualifier qualifier, const TType& type)
{
- if ((qualifier == EvqOut || qualifier == EvqInOut) &&
- type.getBasicType() != EbtStruct && IsSampler(type.getBasicType())) {
- error(line, "samplers cannot be output parameters", type.getBasicString());
- return true;
- }
+ if ((qualifier == EvqOut || qualifier == EvqInOut) &&
+ type.getBasicType() != EbtStruct && IsSampler(type.getBasicType())) {
+ error(line, "samplers cannot be output parameters", type.getBasicString());
+ return true;
+ }
- return false;
+ return false;
}
bool TParseContext::containsSampler(TType& type)
{
- if (IsSampler(type.getBasicType()))
- return true;
+ if (IsSampler(type.getBasicType()))
+ return true;
- if (type.getBasicType() == EbtStruct) {
- const TFieldList& fields = type.getStruct()->fields();
- for(unsigned int i = 0; i < fields.size(); ++i) {
- if (containsSampler(*fields[i]->type()))
- return true;
- }
- }
+ if (type.getBasicType() == EbtStruct || type.isInterfaceBlock()) {
+ const TFieldList& fields = type.getStruct()->fields();
+ for(unsigned int i = 0; i < fields.size(); ++i) {
+ if (containsSampler(*fields[i]->type()))
+ return true;
+ }
+ }
- return false;
+ return false;
}
//
//
bool TParseContext::arraySizeErrorCheck(const TSourceLoc &line, TIntermTyped* expr, int& size)
{
- TIntermConstantUnion* constant = expr->getAsConstantUnion();
+ TIntermConstantUnion* constant = expr->getAsConstantUnion();
- if (constant == 0 || !constant->isScalarInt())
- {
- error(line, "array size must be a constant integer expression", "");
- return true;
- }
+ if (expr->getQualifier() != EvqConstExpr || constant == 0 || !constant->isScalarInt())
+ {
+ error(line, "array size must be a constant integer expression", "");
+ return true;
+ }
- if (constant->getBasicType() == EbtUInt)
- {
- unsigned int uintSize = constant->getUConst(0);
- if (uintSize > static_cast<unsigned int>(std::numeric_limits<int>::max()))
- {
- error(line, "array size too large", "");
- size = 1;
- return true;
- }
+ if (constant->getBasicType() == EbtUInt)
+ {
+ unsigned int uintSize = constant->getUConst(0);
+ if (uintSize > static_cast<unsigned int>(std::numeric_limits<int>::max()))
+ {
+ error(line, "array size too large", "");
+ size = 1;
+ return true;
+ }
- size = static_cast<int>(uintSize);
- }
- else
- {
- size = constant->getIConst(0);
+ size = static_cast<int>(uintSize);
+ }
+ else
+ {
+ size = constant->getIConst(0);
- if (size <= 0)
- {
- error(line, "array size must be a positive integer", "");
- size = 1;
- return true;
- }
- }
+ if (size < 0)
+ {
+ error(line, "array size must be non-negative", "");
+ size = 1;
+ return true;
+ }
+ }
+
+ if(size == 0)
+ {
+ error(line, "array size must be greater than zero", "");
+ return true;
+ }
- return false;
+ return false;
}
//
//
bool TParseContext::arrayQualifierErrorCheck(const TSourceLoc &line, TPublicType type)
{
- if ((type.qualifier == EvqAttribute) || (type.qualifier == EvqVertexIn) || (type.qualifier == EvqConstExpr)) {
- error(line, "cannot declare arrays of this qualifier", TType(type).getCompleteString().c_str());
- return true;
- }
+ if ((type.qualifier == EvqAttribute) || (type.qualifier == EvqVertexIn) || (type.qualifier == EvqConstExpr && mShaderVersion < 300)) {
+ error(line, "cannot declare arrays of this qualifier", TType(type).getCompleteString().c_str());
+ return true;
+ }
- return false;
+ return false;
}
//
//
bool TParseContext::arrayTypeErrorCheck(const TSourceLoc &line, TPublicType type)
{
- //
- // Can the type be an array?
- //
- if (type.array) {
- error(line, "cannot declare arrays of arrays", TType(type).getCompleteString().c_str());
- return true;
- }
+ //
+ // Can the type be an array?
+ //
+ if (type.array) {
+ error(line, "cannot declare arrays of arrays", TType(type).getCompleteString().c_str());
+ return true;
+ }
- return false;
+ // In ESSL1.00 shaders, structs cannot be varying (section 4.3.5). This is checked elsewhere.
+ // In ESSL3.00 shaders, struct inputs/outputs are allowed but not arrays of structs (section 4.3.4).
+ if(mShaderVersion >= 300 && type.type == EbtStruct && IsVarying(type.qualifier))
+ {
+ error(line, "cannot declare arrays of structs of this qualifier",
+ TType(type).getCompleteString().c_str());
+ return true;
+ }
+
+ return false;
}
bool TParseContext::arraySetMaxSize(TIntermSymbol *node, TType* type, int size, bool updateFlag, const TSourceLoc &line)
{
- bool builtIn = false;
- TSymbol* symbol = symbolTable.find(node->getSymbol(), mShaderVersion, &builtIn);
- if (symbol == 0) {
- error(line, " undeclared identifier", node->getSymbol().c_str());
- return true;
- }
- TVariable* variable = static_cast<TVariable*>(symbol);
+ bool builtIn = false;
+ TSymbol* symbol = symbolTable.find(node->getSymbol(), mShaderVersion, &builtIn);
+ if (symbol == 0) {
+ error(line, " undeclared identifier", node->getSymbol().c_str());
+ return true;
+ }
+ TVariable* variable = static_cast<TVariable*>(symbol);
- type->setArrayInformationType(variable->getArrayInformationType());
- variable->updateArrayInformationType(type);
+ type->setArrayInformationType(variable->getArrayInformationType());
+ variable->updateArrayInformationType(type);
- // special casing to test index value of gl_FragData. If the accessed index is >= gl_MaxDrawBuffers
- // its an error
- if (node->getSymbol() == "gl_FragData") {
- TSymbol* fragData = symbolTable.find("gl_MaxDrawBuffers", mShaderVersion, &builtIn);
- ASSERT(fragData);
+ // special casing to test index value of gl_FragData. If the accessed index is >= gl_MaxDrawBuffers
+ // its an error
+ if (node->getSymbol() == "gl_FragData") {
+ TSymbol* fragData = symbolTable.find("gl_MaxDrawBuffers", mShaderVersion, &builtIn);
+ ASSERT(fragData);
- int fragDataValue = static_cast<TVariable*>(fragData)->getConstPointer()[0].getIConst();
- if (fragDataValue <= size) {
- error(line, "", "[", "gl_FragData can only have a max array size of up to gl_MaxDrawBuffers");
- return true;
- }
- }
+ int fragDataValue = static_cast<TVariable*>(fragData)->getConstPointer()[0].getIConst();
+ if (fragDataValue <= size) {
+ error(line, "", "[", "gl_FragData can only have a max array size of up to gl_MaxDrawBuffers");
+ return true;
+ }
+ }
- // we dont want to update the maxArraySize when this flag is not set, we just want to include this
- // node type in the chain of node types so that its updated when a higher maxArraySize comes in.
- if (!updateFlag)
- return false;
+ // we dont want to update the maxArraySize when this flag is not set, we just want to include this
+ // node type in the chain of node types so that its updated when a higher maxArraySize comes in.
+ if (!updateFlag)
+ return false;
- size++;
- variable->getType().setMaxArraySize(size);
- type->setMaxArraySize(size);
- TType* tt = type;
+ size++;
+ variable->getType().setMaxArraySize(size);
+ type->setMaxArraySize(size);
+ TType* tt = type;
- while(tt->getArrayInformationType() != 0) {
- tt = tt->getArrayInformationType();
- tt->setMaxArraySize(size);
- }
+ while(tt->getArrayInformationType() != 0) {
+ tt = tt->getArrayInformationType();
+ tt->setMaxArraySize(size);
+ }
- return false;
+ return false;
}
//
//
bool TParseContext::nonInitConstErrorCheck(const TSourceLoc &line, TString& identifier, TPublicType& type, bool array)
{
- if (type.qualifier == EvqConstExpr)
- {
- // Make the qualifier make sense.
- type.qualifier = EvqTemporary;
+ if (type.qualifier == EvqConstExpr)
+ {
+ // Make the qualifier make sense.
+ type.qualifier = EvqTemporary;
- if (array)
- {
- error(line, "arrays may not be declared constant since they cannot be initialized", identifier.c_str());
- }
- else if (type.isStructureContainingArrays())
- {
- error(line, "structures containing arrays may not be declared constant since they cannot be initialized", identifier.c_str());
- }
- else
- {
- error(line, "variables with qualifier 'const' must be initialized", identifier.c_str());
- }
+ if (array)
+ {
+ error(line, "arrays may not be declared constant since they cannot be initialized", identifier.c_str());
+ }
+ else if (type.isStructureContainingArrays())
+ {
+ error(line, "structures containing arrays may not be declared constant since they cannot be initialized", identifier.c_str());
+ }
+ else
+ {
+ error(line, "variables with qualifier 'const' must be initialized", identifier.c_str());
+ }
- return true;
- }
+ return true;
+ }
- return false;
+ return false;
}
//
bool TParseContext::paramErrorCheck(const TSourceLoc &line, TQualifier qualifier, TQualifier paramQualifier, TType* type)
{
- if (qualifier != EvqConstReadOnly && qualifier != EvqTemporary) {
- error(line, "qualifier not allowed on function parameter", getQualifierString(qualifier));
- return true;
- }
- if (qualifier == EvqConstReadOnly && paramQualifier != EvqIn) {
- error(line, "qualifier not allowed with ", getQualifierString(qualifier), getQualifierString(paramQualifier));
- return true;
- }
+ if (qualifier != EvqConstReadOnly && qualifier != EvqTemporary) {
+ error(line, "qualifier not allowed on function parameter", getQualifierString(qualifier));
+ return true;
+ }
+ if (qualifier == EvqConstReadOnly && paramQualifier != EvqIn) {
+ error(line, "qualifier not allowed with ", getQualifierString(qualifier), getQualifierString(paramQualifier));
+ return true;
+ }
- if (qualifier == EvqConstReadOnly)
- type->setQualifier(EvqConstReadOnly);
- else
- type->setQualifier(paramQualifier);
+ if (qualifier == EvqConstReadOnly)
+ type->setQualifier(EvqConstReadOnly);
+ else
+ type->setQualifier(paramQualifier);
- return false;
+ return false;
}
bool TParseContext::extensionErrorCheck(const TSourceLoc &line, const TString& extension)
{
- const TExtensionBehavior& extBehavior = extensionBehavior();
- TExtensionBehavior::const_iterator iter = extBehavior.find(extension.c_str());
- if (iter == extBehavior.end()) {
- error(line, "extension", extension.c_str(), "is not supported");
- return true;
- }
- // In GLSL ES, an extension's default behavior is "disable".
- if (iter->second == EBhDisable || iter->second == EBhUndefined) {
- error(line, "extension", extension.c_str(), "is disabled");
- return true;
- }
- if (iter->second == EBhWarn) {
- warning(line, "extension", extension.c_str(), "is being used");
- return false;
- }
-
- return false;
+ const TExtensionBehavior& extBehavior = extensionBehavior();
+ TExtensionBehavior::const_iterator iter = extBehavior.find(extension.c_str());
+ if (iter == extBehavior.end()) {
+ error(line, "extension", extension.c_str(), "is not supported");
+ return true;
+ }
+ // In GLSL ES, an extension's default behavior is "disable".
+ if (iter->second == EBhDisable || iter->second == EBhUndefined) {
+ error(line, "extension", extension.c_str(), "is disabled");
+ return true;
+ }
+ if (iter->second == EBhWarn) {
+ warning(line, "extension", extension.c_str(), "is being used");
+ return false;
+ }
+
+ return false;
}
bool TParseContext::functionCallLValueErrorCheck(const TFunction *fnCandidate, TIntermAggregate *aggregate)
bool TParseContext::supportsExtension(const char* extension)
{
- const TExtensionBehavior& extbehavior = extensionBehavior();
- TExtensionBehavior::const_iterator iter = extbehavior.find(extension);
- return (iter != extbehavior.end());
+ const TExtensionBehavior& extbehavior = extensionBehavior();
+ TExtensionBehavior::const_iterator iter = extbehavior.find(extension);
+ return (iter != extbehavior.end());
}
void TParseContext::handleExtensionDirective(const TSourceLoc &line, const char* extName, const char* behavior)
{
- pp::SourceLocation loc(line.first_file, line.first_line);
- mDirectiveHandler.handleExtension(loc, extName, behavior);
+ pp::SourceLocation loc(line.first_file, line.first_line);
+ mDirectiveHandler.handleExtension(loc, extName, behavior);
}
void TParseContext::handlePragmaDirective(const TSourceLoc &line, const char* name, const char* value)
{
- pp::SourceLocation loc(line.first_file, line.first_line);
- mDirectiveHandler.handlePragma(loc, name, value);
+ pp::SourceLocation loc(line.first_file, line.first_line);
+ mDirectiveHandler.handlePragma(loc, name, value);
}
/////////////////////////////////////////////////////////////////////////////////
const TString *name,
const TSymbol *symbol)
{
- const TVariable *variable = NULL;
+ const TVariable *variable = nullptr;
if(!symbol)
{
// This validation is not quite correct - it's only an error to write to
// both FragData and FragColor. For simplicity, and because users shouldn't
- // be rewarded for reading from undefined varaibles, return an error
+ // be rewarded for reading from undefined variables, return an error
// if they are both referenced, rather than assigned.
if(mUsesFragData && mUsesFragColor)
{
//
const TFunction* TParseContext::findFunction(const TSourceLoc &line, TFunction* call, bool *builtIn)
{
- // First find by unmangled name to check whether the function name has been
- // hidden by a variable name or struct typename.
- const TSymbol* symbol = symbolTable.find(call->getName(), mShaderVersion, builtIn);
- if (symbol == 0) {
- symbol = symbolTable.find(call->getMangledName(), mShaderVersion, builtIn);
- }
+ // First find by unmangled name to check whether the function name has been
+ // hidden by a variable name or struct typename.
+ const TSymbol* symbol = symbolTable.find(call->getName(), mShaderVersion, builtIn);
+ if (symbol == 0) {
+ symbol = symbolTable.find(call->getMangledName(), mShaderVersion, builtIn);
+ }
- if (symbol == 0) {
- error(line, "no matching overloaded function found", call->getName().c_str());
- return 0;
- }
+ if (symbol == 0) {
+ error(line, "no matching overloaded function found", call->getName().c_str());
+ return nullptr;
+ }
- if (!symbol->isFunction()) {
- error(line, "function name expected", call->getName().c_str());
- return 0;
- }
+ if (!symbol->isFunction()) {
+ error(line, "function name expected", call->getName().c_str());
+ return nullptr;
+ }
- return static_cast<const TFunction*>(symbol);
+ return static_cast<const TFunction*>(symbol);
}
//
// code to handle them here.
//
bool TParseContext::executeInitializer(const TSourceLoc& line, const TString& identifier, const TPublicType& pType,
- TIntermTyped *initializer, TIntermNode **intermNode)
+ TIntermTyped *initializer, TIntermNode **intermNode)
{
ASSERT(intermNode != nullptr);
TType type = TType(pType);
- TVariable *variable = nullptr;
- if(type.isArray() && (type.getArraySize() == 0))
+ if(type.isUnsizedArray())
{
- type.setArraySize(initializer->getArraySize());
+ // We have not checked yet whether the initializer actually is an array or not.
+ if(initializer->isArray())
+ {
+ type.setArraySize(initializer->getArraySize());
+ }
+ else
+ {
+ // Having a non-array initializer for an unsized array will result in an error later,
+ // so we don't generate an error message here.
+ type.setArraySize(1u);
+ }
}
+
+ TVariable *variable = nullptr;
if(!declareVariable(line, identifier, type, &variable))
{
return true;
{
warning(line, "global variable initializers should be constant expressions "
"(uniforms and globals are allowed in global initializers for legacy compatibility)", "=");
- }
-
- //
- // identifier must be of type constant, a global, or a temporary
- //
- TQualifier qualifier = variable->getType().getQualifier();
- if ((qualifier != EvqTemporary) && (qualifier != EvqGlobal) && (qualifier != EvqConstExpr)) {
- error(line, " cannot initialize this type of qualifier ", variable->getType().getQualifierString());
- return true;
- }
- //
- // test for and propagate constant
- //
-
- if (qualifier == EvqConstExpr) {
- if (qualifier != initializer->getType().getQualifier()) {
- std::stringstream extraInfoStream;
- extraInfoStream << "'" << variable->getType().getCompleteString() << "'";
- std::string extraInfo = extraInfoStream.str();
- error(line, " assigning non-constant to", "=", extraInfo.c_str());
- variable->getType().setQualifier(EvqTemporary);
- return true;
- }
- if (type != initializer->getType()) {
- error(line, " non-matching types for const initializer ",
- variable->getType().getQualifierString());
- variable->getType().setQualifier(EvqTemporary);
- return true;
- }
- if (initializer->getAsConstantUnion()) {
- variable->shareConstPointer(initializer->getAsConstantUnion()->getUnionArrayPointer());
- } else if (initializer->getAsSymbolNode()) {
- const TSymbol* symbol = symbolTable.find(initializer->getAsSymbolNode()->getSymbol(), 0);
- const TVariable* tVar = static_cast<const TVariable*>(symbol);
-
- ConstantUnion* constArray = tVar->getConstPointer();
- variable->shareConstPointer(constArray);
- } else {
- std::stringstream extraInfoStream;
- extraInfoStream << "'" << variable->getType().getCompleteString() << "'";
- std::string extraInfo = extraInfoStream.str();
- error(line, " cannot assign to", "=", extraInfo.c_str());
- variable->getType().setQualifier(EvqTemporary);
- return true;
- }
- }
-
- if (qualifier != EvqConstExpr) {
- TIntermSymbol* intermSymbol = intermediate.addSymbol(variable->getUniqueId(), variable->getName(), variable->getType(), line);
- *intermNode = createAssign(EOpInitialize, intermSymbol, initializer, line);
- if(*intermNode == nullptr) {
- assignError(line, "=", intermSymbol->getCompleteString(), initializer->getCompleteString());
- return true;
- }
- } else
- *intermNode = nullptr;
-
- return false;
-}
-
-bool TParseContext::areAllChildConst(TIntermAggregate* aggrNode)
-{
- ASSERT(aggrNode != NULL);
- if (!aggrNode->isConstructor())
- return false;
-
- bool allConstant = true;
-
- // check if all the child nodes are constants so that they can be inserted into
- // the parent node
- TIntermSequence &sequence = aggrNode->getSequence() ;
- for (TIntermSequence::iterator p = sequence.begin(); p != sequence.end(); ++p) {
- if (!(*p)->getAsTyped()->getAsConstantUnion())
- return false;
- }
-
- return allConstant;
+ }
+
+ //
+ // identifier must be of type constant, a global, or a temporary
+ //
+ TQualifier qualifier = type.getQualifier();
+ if ((qualifier != EvqTemporary) && (qualifier != EvqGlobal) && (qualifier != EvqConstExpr)) {
+ error(line, " cannot initialize this type of qualifier ", variable->getType().getQualifierString());
+ return true;
+ }
+ //
+ // test for and propagate constant
+ //
+
+ if (qualifier == EvqConstExpr) {
+ if (qualifier != initializer->getQualifier()) {
+ std::stringstream extraInfoStream;
+ extraInfoStream << "'" << variable->getType().getCompleteString() << "'";
+ std::string extraInfo = extraInfoStream.str();
+ error(line, " assigning non-constant to", "=", extraInfo.c_str());
+ variable->getType().setQualifier(EvqTemporary);
+ return true;
+ }
+
+ if (type != initializer->getType()) {
+ error(line, " non-matching types for const initializer ",
+ variable->getType().getQualifierString());
+ variable->getType().setQualifier(EvqTemporary);
+ return true;
+ }
+
+ if (initializer->getAsConstantUnion()) {
+ variable->shareConstPointer(initializer->getAsConstantUnion()->getUnionArrayPointer());
+ } else if (initializer->getAsSymbolNode()) {
+ const TSymbol* symbol = symbolTable.find(initializer->getAsSymbolNode()->getSymbol(), 0);
+ const TVariable* tVar = static_cast<const TVariable*>(symbol);
+
+ ConstantUnion* constArray = tVar->getConstPointer();
+ variable->shareConstPointer(constArray);
+ }
+ }
+
+ if (!variable->isConstant()) {
+ TIntermSymbol* intermSymbol = intermediate.addSymbol(variable->getUniqueId(), variable->getName(), variable->getType(), line);
+ *intermNode = createAssign(EOpInitialize, intermSymbol, initializer, line);
+ if(*intermNode == nullptr) {
+ assignError(line, "=", intermSymbol->getCompleteString(), initializer->getCompleteString());
+ return true;
+ }
+ } else
+ *intermNode = nullptr;
+
+ return false;
}
TPublicType TParseContext::addFullySpecifiedType(TQualifier qualifier, bool invariant, TLayoutQualifier layoutQualifier, const TPublicType &typeSpecifier)
if(mShaderVersion < 300)
{
+ if(typeSpecifier.array)
+ {
+ error(typeSpecifier.line, "not supported", "first-class array");
+ returnType.clearArrayness();
+ }
+
if(qualifier == EvqAttribute && (typeSpecifier.type == EbtBool || typeSpecifier.type == EbtInt))
{
error(typeSpecifier.line, "cannot be bool or int", getQualifierString(qualifier));
recover();
}
-
- if((qualifier == EvqVaryingIn || qualifier == EvqVaryingOut) &&
- (typeSpecifier.type == EbtBool || typeSpecifier.type == EbtInt))
+
+ if((qualifier == EvqVaryingIn || qualifier == EvqVaryingOut) &&
+ (typeSpecifier.type == EbtBool || typeSpecifier.type == EbtInt))
+ {
+ error(typeSpecifier.line, "cannot be bool or int", getQualifierString(qualifier));
+ recover();
+ }
+ }
+ else
+ {
+ if(!returnType.layoutQualifier.isEmpty())
+ {
+ globalErrorCheck(typeSpecifier.line, symbolTable.atGlobalLevel(), "layout");
+ }
+
+ if(IsVarying(returnType.qualifier) || returnType.qualifier == EvqVertexIn || returnType.qualifier == EvqFragmentOut)
+ {
+ checkInputOutputTypeIsValidES3(returnType.qualifier, typeSpecifier, typeSpecifier.line);
+ }
+ }
+
+ return returnType;
+}
+
+void TParseContext::checkInputOutputTypeIsValidES3(const TQualifier qualifier,
+ const TPublicType &type,
+ const TSourceLoc &qualifierLocation)
+{
+ // An input/output variable can never be bool or a sampler. Samplers are checked elsewhere.
+ if(type.type == EbtBool)
+ {
+ error(qualifierLocation, "cannot be bool", getQualifierString(qualifier));
+ }
+
+ // Specific restrictions apply for vertex shader inputs and fragment shader outputs.
+ switch(qualifier)
+ {
+ case EvqVertexIn:
+ // ESSL 3.00 section 4.3.4
+ if(type.array)
+ {
+ error(qualifierLocation, "cannot be array", getQualifierString(qualifier));
+ }
+ // Vertex inputs with a struct type are disallowed in singleDeclarationErrorCheck
+ return;
+ case EvqFragmentOut:
+ // ESSL 3.00 section 4.3.6
+ if(type.isMatrix())
+ {
+ error(qualifierLocation, "cannot be matrix", getQualifierString(qualifier));
+ }
+ // Fragment outputs with a struct type are disallowed in singleDeclarationErrorCheck
+ return;
+ default:
+ break;
+ }
+
+ // Vertex shader outputs / fragment shader inputs have a different, slightly more lenient set of
+ // restrictions.
+ bool typeContainsIntegers = (type.type == EbtInt || type.type == EbtUInt ||
+ type.isStructureContainingType(EbtInt) ||
+ type.isStructureContainingType(EbtUInt));
+ if(typeContainsIntegers && qualifier != EvqFlatIn && qualifier != EvqFlatOut)
+ {
+ error(qualifierLocation, "must use 'flat' interpolation here", getQualifierString(qualifier));
+ }
+
+ if(type.type == EbtStruct)
+ {
+ // ESSL 3.00 sections 4.3.4 and 4.3.6.
+ // These restrictions are only implied by the ESSL 3.00 spec, but
+ // the ESSL 3.10 spec lists these restrictions explicitly.
+ if(type.array)
+ {
+ error(qualifierLocation, "cannot be an array of structures", getQualifierString(qualifier));
+ }
+ if(type.isStructureContainingArrays())
+ {
+ error(qualifierLocation, "cannot be a structure containing an array", getQualifierString(qualifier));
+ }
+ if(type.isStructureContainingType(EbtStruct))
{
- error(typeSpecifier.line, "cannot be bool or int", getQualifierString(qualifier));
- recover();
+ error(qualifierLocation, "cannot be a structure containing a structure", getQualifierString(qualifier));
}
- }
- else
- {
- switch(qualifier)
+ if(type.isStructureContainingType(EbtBool))
{
- case EvqSmoothIn:
- case EvqSmoothOut:
- case EvqVertexOut:
- case EvqFragmentIn:
- case EvqCentroidOut:
- case EvqCentroidIn:
- if(typeSpecifier.type == EbtBool)
- {
- error(typeSpecifier.line, "cannot be bool", getQualifierString(qualifier));
- recover();
- }
- if(typeSpecifier.type == EbtInt || typeSpecifier.type == EbtUInt)
- {
- error(typeSpecifier.line, "must use 'flat' interpolation here", getQualifierString(qualifier));
- recover();
- }
- break;
-
- case EvqVertexIn:
- case EvqFragmentOut:
- case EvqFlatIn:
- case EvqFlatOut:
- if(typeSpecifier.type == EbtBool)
- {
- error(typeSpecifier.line, "cannot be bool", getQualifierString(qualifier));
- recover();
- }
- break;
-
- default: break;
+ error(qualifierLocation, "cannot be a structure containing a bool", getQualifierString(qualifier));
}
}
-
- return returnType;
}
TIntermAggregate *TParseContext::parseSingleDeclaration(TPublicType &publicType,
}
}
-TFunction *TParseContext::addConstructorFunc(const TPublicType &publicTypeIn)
+TIntermAggregate *TParseContext::addFunctionPrototypeDeclaration(const TFunction &function, const TSourceLoc &location)
{
- TPublicType publicType = publicTypeIn;
- TOperator op = EOpNull;
- if(publicType.userDef)
+ // Note: symbolTableFunction could be the same as function if this is the first declaration.
+ // Either way the instance in the symbol table is used to track whether the function is declared
+ // multiple times.
+ TFunction *symbolTableFunction =
+ static_cast<TFunction *>(symbolTable.find(function.getMangledName(), getShaderVersion()));
+ if(symbolTableFunction->hasPrototypeDeclaration() && mShaderVersion == 100)
{
- op = EOpConstructStruct;
+ // ESSL 1.00.17 section 4.2.7.
+ // Doesn't apply to ESSL 3.00.4: see section 4.2.3.
+ error(location, "duplicate function prototype declarations are not allowed", "function");
+ recover();
}
- else
+ symbolTableFunction->setHasPrototypeDeclaration();
+
+ TIntermAggregate *prototype = new TIntermAggregate;
+ prototype->setType(function.getReturnType());
+ prototype->setName(function.getMangledName());
+
+ for(size_t i = 0; i < function.getParamCount(); i++)
{
- switch(publicType.type)
+ const TParameter ¶m = function.getParam(i);
+ if(param.name != 0)
{
- case EbtFloat:
- if(publicType.isMatrix())
- {
- switch(publicType.getCols())
- {
- case 2:
- switch(publicType.getRows())
- {
- case 2: op = EOpConstructMat2; break;
- case 3: op = EOpConstructMat2x3; break;
- case 4: op = EOpConstructMat2x4; break;
- }
- break;
- case 3:
- switch(publicType.getRows())
- {
- case 2: op = EOpConstructMat3x2; break;
- case 3: op = EOpConstructMat3; break;
- case 4: op = EOpConstructMat3x4; break;
- }
- break;
- case 4:
- switch(publicType.getRows())
- {
- case 2: op = EOpConstructMat4x2; break;
- case 3: op = EOpConstructMat4x3; break;
- case 4: op = EOpConstructMat4; break;
- }
- break;
- }
- }
- else
- {
- switch(publicType.getNominalSize())
- {
- case 1: op = EOpConstructFloat; break;
- case 2: op = EOpConstructVec2; break;
- case 3: op = EOpConstructVec3; break;
- case 4: op = EOpConstructVec4; break;
- }
- }
- break;
+ TVariable variable(param.name, *param.type);
- case EbtInt:
- switch(publicType.getNominalSize())
- {
- case 1: op = EOpConstructInt; break;
- case 2: op = EOpConstructIVec2; break;
- case 3: op = EOpConstructIVec3; break;
- case 4: op = EOpConstructIVec4; break;
- }
- break;
+ TIntermSymbol *paramSymbol = intermediate.addSymbol(
+ variable.getUniqueId(), variable.getName(), variable.getType(), location);
+ prototype = intermediate.growAggregate(prototype, paramSymbol, location);
+ }
+ else
+ {
+ TIntermSymbol *paramSymbol = intermediate.addSymbol(0, "", *param.type, location);
+ prototype = intermediate.growAggregate(prototype, paramSymbol, location);
+ }
+ }
+
+ prototype->setOp(EOpPrototype);
+
+ symbolTable.pop();
+
+ if(!symbolTable.atGlobalLevel())
+ {
+ // ESSL 3.00.4 section 4.2.4.
+ error(location, "local function prototype declarations are not allowed", "function");
+ recover();
+ }
+
+ return prototype;
+}
+
+TIntermAggregate *TParseContext::addFunctionDefinition(const TFunction &function, TIntermAggregate *functionPrototype, TIntermAggregate *functionBody, const TSourceLoc &location)
+{
+ //?? Check that all paths return a value if return type != void ?
+ // May be best done as post process phase on intermediate code
+ if(mCurrentFunctionType->getBasicType() != EbtVoid && !mFunctionReturnsValue)
+ {
+ error(location, "function does not return a value:", "", function.getName().c_str());
+ recover();
+ }
+
+ TIntermAggregate *aggregate = intermediate.growAggregate(functionPrototype, functionBody, location);
+ intermediate.setAggregateOperator(aggregate, EOpFunction, location);
+ aggregate->setName(function.getMangledName().c_str());
+ aggregate->setType(function.getReturnType());
+
+ // store the pragma information for debug and optimize and other vendor specific
+ // information. This information can be queried from the parse tree
+ aggregate->setOptimize(pragma().optimize);
+ aggregate->setDebug(pragma().debug);
+
+ if(functionBody && functionBody->getAsAggregate())
+ aggregate->setEndLine(functionBody->getAsAggregate()->getEndLine());
+
+ symbolTable.pop();
+ return aggregate;
+}
+
+void TParseContext::parseFunctionPrototype(const TSourceLoc &location, TFunction *function, TIntermAggregate **aggregateOut)
+{
+ const TSymbol *builtIn = symbolTable.findBuiltIn(function->getMangledName(), getShaderVersion());
+
+ if(builtIn)
+ {
+ error(location, "built-in functions cannot be redefined", function->getName().c_str());
+ recover();
+ }
+
+ TFunction *prevDec = static_cast<TFunction *>(symbolTable.find(function->getMangledName(), getShaderVersion()));
+ //
+ // 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.
+ error(location, "function already has a body", function->getName().c_str());
+ recover();
+ }
+ prevDec->setDefined();
+ //
+ // Overload the unique ID of the definition to be the same unique ID as the declaration.
+ // Eventually we will probably want to have only a single definition and just swap the
+ // arguments to be the definition's arguments.
+ //
+ function->setUniqueId(prevDec->getUniqueId());
+
+ // Raise error message if main function takes any parameters or return anything other than void
+ if(function->getName() == "main")
+ {
+ if(function->getParamCount() > 0)
+ {
+ error(location, "function cannot take any parameter(s)", function->getName().c_str());
+ recover();
+ }
+ if(function->getReturnType().getBasicType() != EbtVoid)
+ {
+ error(location, "", function->getReturnType().getBasicString(), "main function cannot return a value");
+ recover();
+ }
+ }
- case EbtUInt:
- switch(publicType.getNominalSize())
+ //
+ // Remember the return type for later checking for RETURN statements.
+ //
+ mCurrentFunctionType = &(prevDec->getReturnType());
+ mFunctionReturnsValue = 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(size_t i = 0; i < function->getParamCount(); i++)
+ {
+ const TParameter ¶m = function->getParam(i);
+ if(param.name != 0)
+ {
+ TVariable *variable = new TVariable(param.name, *param.type);
+ //
+ // Insert the parameters with name in the symbol table.
+ //
+ if(!symbolTable.declare(*variable))
{
- case 1: op = EOpConstructUInt; break;
- case 2: op = EOpConstructUVec2; break;
- case 3: op = EOpConstructUVec3; break;
- case 4: op = EOpConstructUVec4; break;
+ error(location, "redefinition", variable->getName().c_str());
+ recover();
+ paramNodes = intermediate.growAggregate(
+ paramNodes, intermediate.addSymbol(0, "", *param.type, location), location);
+ continue;
}
- break;
- case EbtBool:
- switch(publicType.getNominalSize())
+ //
+ // Add the parameter to the HIL
+ //
+ TIntermSymbol *symbol = intermediate.addSymbol(
+ variable->getUniqueId(), variable->getName(), variable->getType(), location);
+
+ paramNodes = intermediate.growAggregate(paramNodes, symbol, location);
+ }
+ else
+ {
+ paramNodes = intermediate.growAggregate(
+ paramNodes, intermediate.addSymbol(0, "", *param.type, location), location);
+ }
+ }
+ intermediate.setAggregateOperator(paramNodes, EOpParameters, location);
+ *aggregateOut = paramNodes;
+ setLoopNestingLevel(0);
+}
+
+TFunction *TParseContext::parseFunctionDeclarator(const TSourceLoc &location, TFunction *function)
+{
+ //
+ // We don't know at this point whether this is a function definition or a prototype.
+ // The definition production code will check for redefinitions.
+ // In the case of ESSL 1.00 the prototype production code will also check for redeclarations.
+ //
+ // Return types and parameter qualifiers must match in all redeclarations, so those are checked
+ // here.
+ //
+ TFunction *prevDec = static_cast<TFunction *>(symbolTable.find(function->getMangledName(), getShaderVersion()));
+ if(getShaderVersion() >= 300 && symbolTable.hasUnmangledBuiltIn(function->getName().c_str()))
+ {
+ // With ESSL 3.00, names of built-in functions cannot be redeclared as functions.
+ // Therefore overloading or redefining builtin functions is an error.
+ error(location, "Name of a built-in function cannot be redeclared as function", function->getName().c_str());
+ }
+ else if(prevDec)
+ {
+ if(prevDec->getReturnType() != function->getReturnType())
+ {
+ error(location, "overloaded functions must have the same return type",
+ function->getReturnType().getBasicString());
+ recover();
+ }
+ for(size_t i = 0; i < prevDec->getParamCount(); ++i)
+ {
+ if(prevDec->getParam(i).type->getQualifier() != function->getParam(i).type->getQualifier())
{
- case 1: op = EOpConstructBool; break;
- case 2: op = EOpConstructBVec2; break;
- case 3: op = EOpConstructBVec3; break;
- case 4: op = EOpConstructBVec4; break;
+ error(location, "overloaded functions must have the same parameter qualifiers",
+ function->getParam(i).type->getQualifierString());
+ recover();
}
- break;
+ }
+ }
- default: break;
+ //
+ // Check for previously declared variables using the same name.
+ //
+ TSymbol *prevSym = symbolTable.find(function->getName(), getShaderVersion());
+ if(prevSym)
+ {
+ if(!prevSym->isFunction())
+ {
+ error(location, "redefinition", function->getName().c_str(), "function");
+ recover();
}
+ }
+
+ // We're at the inner scope level of the function's arguments and body statement.
+ // Add the function prototype to the surrounding scope instead.
+ symbolTable.getOuterLevel()->insert(*function);
+
+ //
+ // 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.
+ //
+ return function;
+}
+TFunction *TParseContext::addConstructorFunc(const TPublicType &publicTypeIn)
+{
+ TPublicType publicType = publicTypeIn;
+ TOperator op = EOpNull;
+ if(publicType.userDef)
+ {
+ op = EOpConstructStruct;
+ }
+ else
+ {
+ op = TypeToConstructorOperator(TType(publicType));
if(op == EOpNull)
{
error(publicType.line, "cannot construct this type", getBasicString(publicType.type));
//
TIntermTyped* TParseContext::addConstructor(TIntermNode* arguments, const TType* type, TOperator op, TFunction* fnCall, const TSourceLoc &line)
{
- TIntermAggregate *aggregateArguments = arguments->getAsAggregate();
+ TIntermAggregate *aggregateArguments = arguments->getAsAggregate();
- if(!aggregateArguments)
- {
- aggregateArguments = new TIntermAggregate;
- aggregateArguments->getSequence().push_back(arguments);
- }
+ if(!aggregateArguments)
+ {
+ aggregateArguments = new TIntermAggregate;
+ aggregateArguments->getSequence().push_back(arguments);
+ }
- if(op == EOpConstructStruct)
- {
- const TFieldList &fields = type->getStruct()->fields();
- TIntermSequence &args = aggregateArguments->getSequence();
+ if(type->isArray())
+ {
+ // GLSL ES 3.00 section 5.4.4: Each argument must be the same type as the element type of
+ // the array.
+ for(TIntermNode *&argNode : aggregateArguments->getSequence())
+ {
+ const TType &argType = argNode->getAsTyped()->getType();
+ // It has already been checked that the argument is not an array.
+ ASSERT(!argType.isArray());
+ if(!argType.sameElementType(*type))
+ {
+ error(line, "Array constructor argument has an incorrect type", "Error");
+ return nullptr;
+ }
+ }
+ }
+ else if(op == EOpConstructStruct)
+ {
+ const TFieldList &fields = type->getStruct()->fields();
+ TIntermSequence &args = aggregateArguments->getSequence();
- for(size_t i = 0; i < fields.size(); i++)
- {
- if(args[i]->getAsTyped()->getType() != *fields[i]->type())
- {
- error(line, "Structure constructor arguments do not match structure fields", "Error");
- recover();
+ for(size_t i = 0; i < fields.size(); i++)
+ {
+ if(args[i]->getAsTyped()->getType() != *fields[i]->type())
+ {
+ error(line, "Structure constructor arguments do not match structure fields", "Error");
+ recover();
- return 0;
- }
- }
- }
+ return nullptr;
+ }
+ }
+ }
- // Turn the argument list itself into a constructor
- TIntermTyped *constructor = intermediate.setAggregateOperator(aggregateArguments, op, line);
- TIntermTyped *constConstructor = foldConstConstructor(constructor->getAsAggregate(), *type);
- if(constConstructor)
- {
- return constConstructor;
- }
+ // Turn the argument list itself into a constructor
+ TIntermAggregate *constructor = intermediate.setAggregateOperator(aggregateArguments, op, line);
+ TIntermTyped *constConstructor = foldConstConstructor(constructor, *type);
+ if(constConstructor)
+ {
+ return constConstructor;
+ }
- return constructor;
+ return constructor;
}
TIntermTyped* TParseContext::foldConstConstructor(TIntermAggregate* aggrNode, const TType& type)
{
- bool canBeFolded = areAllChildConst(aggrNode);
- aggrNode->setType(type);
- if (canBeFolded) {
- bool returnVal = false;
- ConstantUnion* unionArray = new ConstantUnion[type.getObjectSize()];
- if (aggrNode->getSequence().size() == 1) {
- returnVal = intermediate.parseConstTree(aggrNode->getLine(), aggrNode, unionArray, aggrNode->getOp(), type, true);
- }
- else {
- returnVal = intermediate.parseConstTree(aggrNode->getLine(), aggrNode, unionArray, aggrNode->getOp(), type);
- }
- if (returnVal)
- return 0;
+ aggrNode->setType(type);
+ if (aggrNode->isConstantFoldable()) {
+ bool returnVal = false;
+ ConstantUnion* unionArray = new ConstantUnion[type.getObjectSize()];
+ if (aggrNode->getSequence().size() == 1) {
+ returnVal = intermediate.parseConstTree(aggrNode->getLine(), aggrNode, unionArray, aggrNode->getOp(), type, true);
+ }
+ else {
+ returnVal = intermediate.parseConstTree(aggrNode->getLine(), aggrNode, unionArray, aggrNode->getOp(), type);
+ }
+ if (returnVal)
+ return nullptr;
- return intermediate.addConstantUnion(unionArray, type, aggrNode->getLine());
- }
+ return intermediate.addConstantUnion(unionArray, type, aggrNode->getLine());
+ }
- return 0;
+ return nullptr;
}
//
// This function returns the tree representation for the vector field(s) being accessed from contant vector.
// If only one component of vector is accessed (v.x or v[0] where v is a contant vector), then a contant node is
// returned, else an aggregate node is returned (for v.xy). The input to this function could either be the symbol
-// node or it could be the intermediate tree representation of accessing fields in a constant structure or column of
+// node or it could be the intermediate tree representation of accessing fields in a constant structure or column of
// a constant matrix.
//
TIntermTyped* TParseContext::addConstVectorNode(TVectorFields& fields, TIntermTyped* node, const TSourceLoc &line)
{
- TIntermTyped* typedNode;
- TIntermConstantUnion* tempConstantNode = node->getAsConstantUnion();
+ TIntermTyped* typedNode;
+ TIntermConstantUnion* tempConstantNode = node->getAsConstantUnion();
- ConstantUnion *unionArray;
- if (tempConstantNode) {
- unionArray = tempConstantNode->getUnionArrayPointer();
+ ConstantUnion *unionArray;
+ if (tempConstantNode) {
+ unionArray = tempConstantNode->getUnionArrayPointer();
- if (!unionArray) {
- return node;
- }
- } else { // The node has to be either a symbol node or an aggregate node or a tempConstant node, else, its an error
- error(line, "Cannot offset into the vector", "Error");
- recover();
+ if (!unionArray) {
+ return node;
+ }
+ } else { // The node has to be either a symbol node or an aggregate node or a tempConstant node, else, its an error
+ error(line, "Cannot offset into the vector", "Error");
+ recover();
- return 0;
- }
+ return nullptr;
+ }
- ConstantUnion* constArray = new ConstantUnion[fields.num];
+ ConstantUnion* constArray = new ConstantUnion[fields.num];
- for (int i = 0; i < fields.num; i++) {
- if (fields.offsets[i] >= node->getType().getObjectSize()) {
- std::stringstream extraInfoStream;
- extraInfoStream << "vector field selection out of range '" << fields.offsets[i] << "'";
- std::string extraInfo = extraInfoStream.str();
- error(line, "", "[", extraInfo.c_str());
- recover();
- fields.offsets[i] = 0;
- }
+ int objSize = static_cast<int>(node->getType().getObjectSize());
+ for (int i = 0; i < fields.num; i++) {
+ if (fields.offsets[i] >= objSize) {
+ std::stringstream extraInfoStream;
+ extraInfoStream << "vector field selection out of range '" << fields.offsets[i] << "'";
+ std::string extraInfo = extraInfoStream.str();
+ error(line, "", "[", extraInfo.c_str());
+ recover();
+ fields.offsets[i] = 0;
+ }
- constArray[i] = unionArray[fields.offsets[i]];
+ constArray[i] = unionArray[fields.offsets[i]];
- }
- typedNode = intermediate.addConstantUnion(constArray, node->getType(), line);
- return typedNode;
+ }
+ typedNode = intermediate.addConstantUnion(constArray, node->getType(), line);
+ return typedNode;
}
//
//
TIntermTyped* TParseContext::addConstMatrixNode(int index, TIntermTyped* node, const TSourceLoc &line)
{
- TIntermTyped* typedNode;
- TIntermConstantUnion* tempConstantNode = node->getAsConstantUnion();
+ TIntermTyped* typedNode;
+ TIntermConstantUnion* tempConstantNode = node->getAsConstantUnion();
- if (index >= node->getType().getNominalSize()) {
- std::stringstream extraInfoStream;
- extraInfoStream << "matrix field selection out of range '" << index << "'";
- std::string extraInfo = extraInfoStream.str();
- error(line, "", "[", extraInfo.c_str());
- recover();
- index = 0;
- }
+ if (index >= node->getType().getNominalSize()) {
+ std::stringstream extraInfoStream;
+ extraInfoStream << "matrix field selection out of range '" << index << "'";
+ std::string extraInfo = extraInfoStream.str();
+ error(line, "", "[", extraInfo.c_str());
+ recover();
+ index = 0;
+ }
- if (tempConstantNode) {
- ConstantUnion* unionArray = tempConstantNode->getUnionArrayPointer();
- int size = tempConstantNode->getType().getNominalSize();
- typedNode = intermediate.addConstantUnion(&unionArray[size*index], tempConstantNode->getType(), line);
- } else {
- error(line, "Cannot offset into the matrix", "Error");
- recover();
+ if (tempConstantNode) {
+ ConstantUnion* unionArray = tempConstantNode->getUnionArrayPointer();
+ int size = tempConstantNode->getType().getNominalSize();
+ typedNode = intermediate.addConstantUnion(&unionArray[size*index], tempConstantNode->getType(), line);
+ } else {
+ error(line, "Cannot offset into the matrix", "Error");
+ recover();
- return 0;
- }
+ return nullptr;
+ }
- return typedNode;
+ return typedNode;
}
//
TIntermTyped* TParseContext::addConstArrayNode(int index, TIntermTyped* node, const TSourceLoc &line)
{
- TIntermTyped* typedNode;
- TIntermConstantUnion* tempConstantNode = node->getAsConstantUnion();
- TType arrayElementType = node->getType();
- arrayElementType.clearArrayness();
+ TIntermTyped* typedNode;
+ TIntermConstantUnion* tempConstantNode = node->getAsConstantUnion();
+ TType arrayElementType = node->getType();
+ arrayElementType.clearArrayness();
- if (index >= node->getType().getArraySize()) {
- std::stringstream extraInfoStream;
- extraInfoStream << "array field selection out of range '" << index << "'";
- std::string extraInfo = extraInfoStream.str();
- error(line, "", "[", extraInfo.c_str());
- recover();
- index = 0;
- }
+ if (index >= node->getType().getArraySize()) {
+ std::stringstream extraInfoStream;
+ extraInfoStream << "array field selection out of range '" << index << "'";
+ std::string extraInfo = extraInfoStream.str();
+ error(line, "", "[", extraInfo.c_str());
+ recover();
+ index = 0;
+ }
- int arrayElementSize = arrayElementType.getObjectSize();
+ size_t arrayElementSize = arrayElementType.getObjectSize();
- if (tempConstantNode) {
- ConstantUnion* unionArray = tempConstantNode->getUnionArrayPointer();
- typedNode = intermediate.addConstantUnion(&unionArray[arrayElementSize * index], tempConstantNode->getType(), line);
- } else {
- error(line, "Cannot offset into the array", "Error");
- recover();
+ if (tempConstantNode) {
+ ConstantUnion* unionArray = tempConstantNode->getUnionArrayPointer();
+ typedNode = intermediate.addConstantUnion(&unionArray[arrayElementSize * index], tempConstantNode->getType(), line);
+ } else {
+ error(line, "Cannot offset into the array", "Error");
+ recover();
- return 0;
- }
+ return nullptr;
+ }
- return typedNode;
+ return typedNode;
}
//
TIntermTyped* TParseContext::addConstStruct(const TString& identifier, TIntermTyped* node, const TSourceLoc &line)
{
- const TFieldList &fields = node->getType().getStruct()->fields();
- TIntermTyped *typedNode;
- int instanceSize = 0;
- unsigned int index = 0;
- TIntermConstantUnion *tempConstantNode = node->getAsConstantUnion();
+ const TFieldList &fields = node->getType().getStruct()->fields();
+ TIntermTyped *typedNode;
+ size_t instanceSize = 0;
+ TIntermConstantUnion *tempConstantNode = node->getAsConstantUnion();
- for ( index = 0; index < fields.size(); ++index) {
- if (fields[index]->name() == identifier) {
- break;
- } else {
- instanceSize += fields[index]->type()->getObjectSize();
- }
- }
+ for(size_t index = 0; index < fields.size(); ++index) {
+ if (fields[index]->name() == identifier) {
+ break;
+ } else {
+ instanceSize += fields[index]->type()->getObjectSize();
+ }
+ }
- if (tempConstantNode) {
- ConstantUnion* constArray = tempConstantNode->getUnionArrayPointer();
+ if (tempConstantNode) {
+ ConstantUnion* constArray = tempConstantNode->getUnionArrayPointer();
- typedNode = intermediate.addConstantUnion(constArray+instanceSize, tempConstantNode->getType(), line); // type will be changed in the calling function
- } else {
- error(line, "Cannot offset into the structure", "Error");
- recover();
+ typedNode = intermediate.addConstantUnion(constArray+instanceSize, tempConstantNode->getType(), line); // type will be changed in the calling function
+ } else {
+ error(line, "Cannot offset into the structure", "Error");
+ recover();
- return 0;
- }
+ return nullptr;
+ }
- return typedNode;
+ return typedNode;
}
//
// Interface/uniform blocks
//
TIntermAggregate* TParseContext::addInterfaceBlock(const TPublicType& typeQualifier, const TSourceLoc& nameLine, const TString& blockName, TFieldList* fieldList,
- const TString* instanceName, const TSourceLoc& instanceLine, TIntermTyped* arrayIndex, const TSourceLoc& arrayIndexLine)
+ const TString* instanceName, const TSourceLoc& instanceLine, TIntermTyped* arrayIndex, const TSourceLoc& arrayIndexLine)
{
if(reservedErrorCheck(nameLine, blockName))
recover();
// add array index
int arraySize = 0;
- if(arrayIndex != NULL)
+ if(arrayIndex)
{
if(arraySizeErrorCheck(arrayIndexLine, arrayIndex, arraySize))
recover();
//
TIntermTyped *TParseContext::addIndexExpression(TIntermTyped *baseExpression, const TSourceLoc &location, TIntermTyped *indexExpression)
{
- TIntermTyped *indexedExpression = NULL;
+ TIntermTyped *indexedExpression = nullptr;
if(!baseExpression->isArray() && !baseExpression->isMatrix() && !baseExpression->isVector())
{
TIntermTyped *TParseContext::addFieldSelectionExpression(TIntermTyped *baseExpression, const TSourceLoc &dotLocation,
const TString &fieldString, const TSourceLoc &fieldLocation)
{
- TIntermTyped *indexedExpression = NULL;
+ TIntermTyped *indexedExpression = nullptr;
if(baseExpression->isArray())
{
recover();
}
- if(baseExpression->getType().getQualifier() == EvqConstExpr)
+ if(baseExpression->getAsConstantUnion())
{
// constant folding for vector fields
indexedExpression = addConstVectorNode(fields, baseExpression, fieldLocation);
TIntermTyped *index = intermediate.addSwizzle(fields, fieldLocation);
indexedExpression = intermediate.addIndex(EOpVectorSwizzle, baseExpression, index, dotLocation);
indexedExpression->setType(TType(baseExpression->getBasicType(), baseExpression->getPrecision(),
- EvqTemporary, (unsigned char)vectorString.size()));
+ baseExpression->getQualifier() == EvqConstExpr ? EvqConstExpr : EvqTemporary, (unsigned char)vectorString.size()));
}
}
else if(baseExpression->isMatrix())
}
else
{
- ConstantUnion *unionArray = new ConstantUnion[1];
- unionArray->setIConst(i);
- TIntermTyped *index = intermediate.addConstantUnion(unionArray, *fields[i]->type(), fieldLocation);
+ TIntermTyped *index = TIntermTyped::CreateIndexNode(i);
+ index->setLine(fieldLocation);
indexedExpression = intermediate.addIndex(EOpIndexDirectStruct, baseExpression, index, dotLocation);
indexedExpression->setType(*fields[i]->type());
}
TLayoutQualifier TParseContext::parseLayoutQualifier(const TString &qualifierType, const TSourceLoc& qualifierTypeLine)
{
- TLayoutQualifier qualifier;
+ TLayoutQualifier qualifier;
- qualifier.location = -1;
+ qualifier.location = -1;
qualifier.matrixPacking = EmpUnspecified;
qualifier.blockStorage = EbsUnspecified;
qualifier.matrixPacking = EmpColumnMajor;
}
else if(qualifierType == "location")
- {
- error(qualifierTypeLine, "invalid layout qualifier", qualifierType.c_str(), "location requires an argument");
- recover();
- }
- else
- {
- error(qualifierTypeLine, "invalid layout qualifier", qualifierType.c_str());
- recover();
- }
+ {
+ error(qualifierTypeLine, "invalid layout qualifier", qualifierType.c_str(), "location requires an argument");
+ recover();
+ }
+ else
+ {
+ error(qualifierTypeLine, "invalid layout qualifier", qualifierType.c_str());
+ recover();
+ }
- return qualifier;
+ return qualifier;
}
TLayoutQualifier TParseContext::parseLayoutQualifier(const TString &qualifierType, const TSourceLoc& qualifierTypeLine, const TString &intValueString, int intValue, const TSourceLoc& intValueLine)
{
- TLayoutQualifier qualifier;
-
- qualifier.location = -1;
- qualifier.matrixPacking = EmpUnspecified;
- qualifier.blockStorage = EbsUnspecified;
-
- if (qualifierType != "location")
- {
- error(qualifierTypeLine, "invalid layout qualifier", qualifierType.c_str(), "only location may have arguments");
- recover();
- }
- else
- {
- // must check that location is non-negative
- if (intValue < 0)
- {
- error(intValueLine, "out of range:", intValueString.c_str(), "location must be non-negative");
- recover();
- }
- else
- {
- qualifier.location = intValue;
- }
- }
-
- return qualifier;
+ TLayoutQualifier qualifier;
+
+ qualifier.location = -1;
+ qualifier.matrixPacking = EmpUnspecified;
+ qualifier.blockStorage = EbsUnspecified;
+
+ if (qualifierType != "location")
+ {
+ error(qualifierTypeLine, "invalid layout qualifier", qualifierType.c_str(), "only location may have arguments");
+ recover();
+ }
+ else
+ {
+ // must check that location is non-negative
+ if (intValue < 0)
+ {
+ error(intValueLine, "out of range:", intValueString.c_str(), "location must be non-negative");
+ recover();
+ }
+ else
+ {
+ qualifier.location = intValue;
+ }
+ }
+
+ return qualifier;
}
TLayoutQualifier TParseContext::joinLayoutQualifiers(TLayoutQualifier leftQualifier, TLayoutQualifier rightQualifier)
{
- TLayoutQualifier joinedQualifier = leftQualifier;
+ TLayoutQualifier joinedQualifier = leftQualifier;
- if (rightQualifier.location != -1)
- {
- joinedQualifier.location = rightQualifier.location;
- }
+ if (rightQualifier.location != -1)
+ {
+ joinedQualifier.location = rightQualifier.location;
+ }
if(rightQualifier.matrixPacking != EmpUnspecified)
{
joinedQualifier.matrixPacking = rightQualifier.matrixPacking;
joinedQualifier.blockStorage = rightQualifier.blockStorage;
}
- return joinedQualifier;
+ return joinedQualifier;
}
bool TParseContext::enterStructDeclaration(const TSourceLoc &line, const TString& identifier)
{
- ++mStructNestingLevel;
+ ++mStructNestingLevel;
- // Embedded structure definitions are not supported per GLSL ES spec.
- // They aren't allowed in GLSL either, but we need to detect this here
- // so we don't rely on the GLSL compiler to catch it.
- if (mStructNestingLevel > 1) {
- error(line, "", "Embedded struct definitions are not allowed");
- return true;
- }
+ // Embedded structure definitions are not supported per GLSL ES spec.
+ // They aren't allowed in GLSL either, but we need to detect this here
+ // so we don't rely on the GLSL compiler to catch it.
+ if (mStructNestingLevel > 1) {
+ error(line, "", "Embedded struct definitions are not allowed");
+ return true;
+ }
- return false;
+ return false;
}
void TParseContext::exitStructDeclaration()
{
- --mStructNestingLevel;
+ --mStructNestingLevel;
}
bool TParseContext::structNestingErrorCheck(const TSourceLoc &line, const TField &field)
break;
}
- return intermediate.addUnaryMath(op, child, loc); // FIXME , funcReturnType);
+ return intermediate.addUnaryMath(op, child, loc, funcReturnType);
}
TIntermTyped *TParseContext::addUnaryMath(TOperator op, TIntermTyped *child, const TSourceLoc &loc)
{
return false;
}
+ break;
+ case EOpAdd:
+ case EOpSub:
+ case EOpDiv:
+ case EOpIMod:
+ case EOpBitShiftLeft:
+ case EOpBitShiftRight:
+ case EOpBitwiseAnd:
+ case EOpBitwiseXor:
+ case EOpBitwiseOr:
+ case EOpAddAssign:
+ case EOpSubAssign:
+ case EOpDivAssign:
+ case EOpIModAssign:
+ case EOpBitShiftLeftAssign:
+ case EOpBitShiftRightAssign:
+ case EOpBitwiseAndAssign:
+ case EOpBitwiseXorAssign:
+ case EOpBitwiseOrAssign:
+ if((left->isMatrix() && right->isVector()) || (left->isVector() && right->isMatrix()))
+ {
+ return false;
+ }
+
+ // Are the sizes compatible?
+ if(left->getNominalSize() != right->getNominalSize() || left->getSecondarySize() != right->getSecondarySize())
+ {
+ // If the nominal sizes of operands do not match:
+ // One of them must be a scalar.
+ if(!left->isScalar() && !right->isScalar())
+ return false;
+
+ // In the case of compound assignment other than multiply-assign,
+ // the right side needs to be a scalar. Otherwise a vector/matrix
+ // would be assigned to a scalar. A scalar can't be shifted by a
+ // vector either.
+ if(!right->isScalar() && (IsAssignment(op) || op == EOpBitShiftLeft || op == EOpBitShiftRight))
+ return false;
+ }
+ break;
default:
break;
}
recover();
callNode = intermediate.setAggregateOperator(nullptr, op, loc);
}
- callNode->setType(type);
}
else
{
functionCallLValueErrorCheck(fnCandidate, aggregate);
callNode = aggregate;
+
+ if(fnCandidate->getParamCount() == 2)
+ {
+ TIntermSequence ¶meters = paramNode->getAsAggregate()->getSequence();
+ TIntermTyped *left = parameters[0]->getAsTyped();
+ TIntermTyped *right = parameters[1]->getAsTyped();
+
+ TIntermConstantUnion *leftTempConstant = left->getAsConstantUnion();
+ TIntermConstantUnion *rightTempConstant = right->getAsConstantUnion();
+ if (leftTempConstant && rightTempConstant)
+ {
+ TIntermTyped *typedReturnNode = leftTempConstant->fold(op, rightTempConstant, infoSink());
+
+ if(typedReturnNode)
+ {
+ callNode = typedReturnNode;
+ }
+ }
+ }
}
}
else
functionCallLValueErrorCheck(fnCandidate, aggregate);
}
- callNode->setType(fnCandidate->getReturnType());
}
else
{
// Returns 0 for success.
//
int PaParseStrings(int count, const char* const string[], const int length[],
- TParseContext* context) {
- if ((count == 0) || (string == NULL))
- return 1;
+ TParseContext* context) {
+ if ((count == 0) || !string)
+ return 1;
- if (glslang_initialize(context))
- return 1;
+ if (glslang_initialize(context))
+ return 1;
- int error = glslang_scan(count, string, length, context);
- if (!error)
- error = glslang_parse(context);
+ int error = glslang_scan(count, string, length, context);
+ if (!error)
+ error = glslang_parse(context);
- glslang_finalize(context);
+ glslang_finalize(context);
- return (error == 0) && (context->numErrors() == 0) ? 0 : 1;
+ return (error == 0) && (context->numErrors() == 0) ? 0 : 1;
}
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