diff options
Diffstat (limited to 'src/mesa/shader/slang/MachineIndependent/ParseHelper.cpp')
| -rwxr-xr-x | src/mesa/shader/slang/MachineIndependent/ParseHelper.cpp | 1452 |
1 files changed, 0 insertions, 1452 deletions
diff --git a/src/mesa/shader/slang/MachineIndependent/ParseHelper.cpp b/src/mesa/shader/slang/MachineIndependent/ParseHelper.cpp deleted file mode 100755 index cfc42746ae1..00000000000 --- a/src/mesa/shader/slang/MachineIndependent/ParseHelper.cpp +++ /dev/null @@ -1,1452 +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.
-//
-
-#include "ParseHelper.h"
-#include "Include/InitializeParseContext.h"
-#include "osinclude.h"
-#include <stdarg.h>
-///////////////////////////////////////////////////////////////////////
-//
-// Sub- vector and matrix fields
-//
-////////////////////////////////////////////////////////////////////////
-
-//
-// Look at a '.' field selector string and change it into offsets
-// for a vector.
-//
-bool TParseContext::parseVectorFields(const TString& compString, int vecSize, TVectorFields& fields, int 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;
-}
-
-
-//
-// Look at a '.' field selector string and change it into offsets
-// for a matrix.
-//
-bool TParseContext::parseMatrixFields(const TString& compString, int matSize, TMatrixFields& fields, int 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 >= matSize || fields.col >= matSize) {
- error(line, "matrix field selection out of range", compString.c_str(), "");
- return false;
- }
-
- return true;
-}
-
-///////////////////////////////////////////////////////////////////////
-//
-// Errors
-//
-////////////////////////////////////////////////////////////////////////
-
-//
-// Track whether errors have occurred.
-//
-void TParseContext::recover()
-{
- recoveredFromError = true;
-}
-
-//
-// Used by flex/bison to output all syntax and parsing errors.
-//
-void C_DECL TParseContext::error(TSourceLoc nLine, const char *szReason, const char *szToken,
- const char *szExtraInfoFormat, ...)
-{
- char szExtraInfo[400];
- va_list marker;
-
- va_start(marker, szExtraInfoFormat);
-
- _vsnprintf(szExtraInfo, sizeof(szExtraInfo), szExtraInfoFormat, marker);
-
- /* VC++ format: file(linenum) : error #: 'token' : extrainfo */
- infoSink.info.prefix(EPrefixError);
- infoSink.info.location(nLine);
- infoSink.info << "'" << szToken << "' : " << szReason << " " << szExtraInfo << "\n";
-
- va_end(marker);
-
- ++numErrors;
-}
-
-//
-// Same error message for all places assignments don't work.
-//
-void TParseContext::assignError(int line, const char* op, TString left, TString right)
-{
- error(line, "", op, "cannot convert from '%s' to '%s'",
- right.c_str(), left.c_str());
-}
-
-//
-// Same error message for all places unary operations don't work.
-//
-void TParseContext::unaryOpError(int line, char* op, TString operand)
-{
- error(line, " wrong operand type", op,
- "no operation '%s' exists that takes an operand of type %s (or there is no acceptable conversion)",
- op, operand.c_str());
-}
-
-//
-// Same error message for all binary operations don't work.
-//
-void TParseContext::binaryOpError(int line, char* op, TString left, TString right)
-{
- error(line, " wrong operand types ", op,
- "no operation '%s' exists that takes a left-hand operand of type '%s' and "
- "a right operand of type '%s' (or there is no acceptable conversion)",
- op, left.c_str(), right.c_str());
-}
-
-//
-// Both test and if necessary, spit out an error, to see if the node is really
-// an l-value that can be operated on this way.
-//
-// Returns true if the was an error.
-//
-bool TParseContext::lValueErrorCheck(int line, 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()->getUnionArrayPointer()->iConst;
- 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();
-
- char* message = 0;
- switch (node->getQualifier()) {
- case EvqConst: 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 EvqUniform: message = "can't modify a uniform"; break;
- case EvqVaryingIn: message = "can't modify a varying"; break;
- case EvqInput: message = "can't modify an input"; break;
- case EvqFace: message = "can't modify gl_FrontFace"; break;
- case EvqFragCoord: message = "can't modify gl_FragCoord"; break;
- default:
-
- //
- // Type that can't be written to?
- //
- switch (node->getBasicType()) {
- case EbtSampler1D:
- case EbtSampler2D:
- case EbtSampler3D:
- case EbtSamplerCube:
- case EbtSampler1DShadow:
- case EbtSampler2DShadow:
- message = "can't modify a sampler";
- break;
- case EbtVoid:
- message = "can't modify void";
- break;
- default:
- break;
- }
- }
-
- 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)
- error(line, " l-value required", op, "\"%s\" (%s)", symbol, message);
- else
- error(line, " l-value required", op, "(%s)", message);
-
- return true;
-}
-
-//
-// Both test, and if necessary spit out an error, to see if the node is really
-// a constant.
-//
-// Returns true if the was an error.
-//
-bool TParseContext::constErrorCheck(TIntermTyped* node)
-{
- if (node->getQualifier() == EvqConst)
- return false;
-
- error(node->getLine(), "constant expression required", "", "");
-
- return true;
-}
-
-//
-// Both test, and if necessary spit out an error, to see if the node is really
-// an integer.
-//
-// Returns true if the was an error.
-//
-bool TParseContext::integerErrorCheck(TIntermTyped* node, char* token)
-{
- if (node->getBasicType() == EbtInt && node->getNominalSize() == 1)
- return false;
-
- error(node->getLine(), "integer expression required", token, "");
-
- return true;
-}
-
-//
-// Both test, and if necessary spit out an error, to see if we are currently
-// globally scoped.
-//
-// Returns true if the was an error.
-//
-bool TParseContext::globalErrorCheck(int line, bool global, char* token)
-{
- if (global)
- return false;
-
- error(line, "only allowed at global scope", token, "");
-
- return true;
-}
-
-//
-// For now, keep it simple: if it starts "gl_", it's reserved, independent
-// of scope. Except, if the symbol table is at the built-in push-level,
-// which is when we are parsing built-ins.
-//
-// Returns true if there was an error.
-//
-bool TParseContext::reservedErrorCheck(int line, const TString& identifier)
-{
- if (symbolTable.atBuiltInLevel() ||
- identifier.substr(0, 3) != TString("gl_"))
- return false;
-
- error(line, "reserved built-in name", "gl_", "");
-
- return true;
-}
-
-//
-// Make sure there is enough data provided to the constructor to build
-// something of the type of the constructor. Also returns the type of
-// the constructor.
-//
-// Returns true if there was an error in construction.
-//
-bool TParseContext::constructorErrorCheck(int line, TIntermNode* node, TFunction& function, TOperator op, TType* type)
-{
- switch(op) {
- case EOpConstructInt: *type = TType(EbtInt); break;
- case EOpConstructBool: *type = TType(EbtBool); break;
- case EOpConstructFloat: *type = TType(EbtFloat); break;
- case EOpConstructVec2: *type = TType(EbtFloat, EvqTemporary, 2); break;
- case EOpConstructVec3: *type = TType(EbtFloat, EvqTemporary, 3); break;
- case EOpConstructVec4: *type = TType(EbtFloat, EvqTemporary, 4); break;
- case EOpConstructBVec2: *type = TType(EbtBool, EvqTemporary, 2); break;
- case EOpConstructBVec3: *type = TType(EbtBool, EvqTemporary, 3); break;
- case EOpConstructBVec4: *type = TType(EbtBool, EvqTemporary, 4); break;
- case EOpConstructIVec2: *type = TType(EbtInt, EvqTemporary, 2); break;
- case EOpConstructIVec3: *type = TType(EbtInt, EvqTemporary, 3); break;
- case EOpConstructIVec4: *type = TType(EbtInt, EvqTemporary, 4); break;
- case EOpConstructMat2: *type = TType(EbtFloat, EvqTemporary, 2, true); break;
- case EOpConstructMat3: *type = TType(EbtFloat, EvqTemporary, 3, true); break;
- case EOpConstructMat4: *type = TType(EbtFloat, EvqTemporary, 4, true); break;
- case EOpConstructStruct: *type = TType(function.getReturnType().getStruct(), function.getReturnType().getTypeName()); break;
- default:
- error(line, "expected constructor", "Internal Error", "");
- return true;
- }
-
- bool constructingMatrix = false;
- switch(op) {
- case EOpConstructMat2:
- case EOpConstructMat3:
- 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;
- for (int i = 0; i < function.getParamCount(); ++i) {
- size += function[i].type->getInstanceSize();
- if (constructingMatrix && function[i].type->isMatrix())
- matrixInMatrix = true;
- if (full)
- overFull = true;
- if (op != EOpConstructStruct && size >= type->getInstanceSize())
- full = true;
- if (function[i].type->getQualifier() != EvqConst)
- constType = false;
- }
-
- if (constType)
- type->changeQualifier(EvqConst);
-
- if (matrixInMatrix) {
- error(line, "constructing matrix from matrix", "constructor", "(reserved)");
- return true;
- }
-
- if (overFull) {
- error(line, "too many arguments", "constructor", "");
- return true;
- }
-
- if (size != 1 && size < type->getInstanceSize() || (size < 1) && op == EOpConstructStruct) {
- error(line, "not enough data provided for construction", "constructor", "");
- return true;
- }
-
- TIntermTyped* typed = node->getAsTyped();
- 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
-//
-// returns true in case of an error
-//
-bool TParseContext::voidErrorCheck(int line, const TString& identifier, const TPublicType& pubType)
-{
- if (pubType.type == EbtVoid) {
- error(line, "illegal use of type 'void'", identifier.c_str(), "");
- return true;
- }
-
- return false;
-}
-
-// This function checks to see if the node (for the expression) contains a scalar boolean expression or not
-//
-// returns true in case of an error
-//
-bool TParseContext::boolErrorCheck(int line, const TIntermTyped* type)
-{
- if (type->getBasicType() != EbtBool || type->isArray() || type->isMatrix() || type->isVector()) {
- error(line, "boolean expression expected", "", "");
- return true;
- }
-
- return false;
-}
-
-// This function checks to see if the node (for the expression) contains a scalar boolean expression or not
-//
-// returns true in case of an error
-//
-bool TParseContext::boolErrorCheck(int line, const TPublicType& pType)
-{
- if (pType.type != EbtBool || pType.array || pType.matrix || (pType.size > 1)) {
- error(line, "boolean expression expected", "", "");
- return true;
- }
-
- return false;
-}
-
-bool TParseContext::samplerErrorCheck(int line, const TPublicType& pType, const char* reason)
-{
- if (pType.type == EbtStruct) {
- if (containsSampler(*pType.userDef)) {
- error(line, reason, TType::getBasicString(pType.type), "(structure contains a sampler)");
-
- return true;
- }
-
- return false;
- } else if (IsSampler(pType.type)) {
- error(line, reason, TType::getBasicString(pType.type), "");
-
- return true;
- }
-
- return false;
-}
-
-bool TParseContext::structQualifierErrorCheck(int line, const TPublicType& pType)
-{
- if ((pType.qualifier == EvqVaryingIn || pType.qualifier == EvqVaryingOut || pType.qualifier == EvqAttribute) &&
- pType.type == EbtStruct) {
- error(line, "cannot be used with a structure", getQualifierString(pType.qualifier), "");
-
- return true;
- }
-
- if (pType.qualifier != EvqUniform && samplerErrorCheck(line, pType, "samplers must be uniform"))
- return true;
-
- return false;
-}
-
-bool TParseContext::parameterSamplerErrorCheck(int 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;
- }
-
- return false;
-}
-
-bool TParseContext::containsSampler(TType& type)
-{
- if (IsSampler(type.getBasicType()))
- return true;
-
- if (type.getBasicType() == EbtStruct) {
- TTypeList& structure = *type.getStruct();
- for (unsigned int i = 0; i < structure.size(); ++i) {
- if (containsSampler(*structure[i].type))
- return true;
- }
- }
-
- return false;
-}
-
-bool TParseContext::insertBuiltInArrayAtGlobalLevel()
-{
- TString *name = NewPoolTString("gl_TexCoord");
- TSymbol* symbol = symbolTable.find(*name);
- if (!symbol) {
- error(0, "INTERNAL ERROR finding symbol", name->c_str(), "");
- return true;
- }
- TVariable* variable = static_cast<TVariable*>(symbol);
-
- TVariable* newVariable = new TVariable(name, variable->getType());
-
- if (! symbolTable.insert(*newVariable)) {
- delete newVariable;
- error(0, "INTERNAL ERROR inserting new symbol", name->c_str(), "");
- return true;
- }
-
- return false;
-}
-
-//
-// Do all the semantic checking for declaring an array, with and
-// without a size, and make the right changes to the symbol table.
-//
-// size == 0 means no specified size.
-//
-// Returns true if there was an error.
-//
-bool TParseContext::arrayErrorCheck(int line, TString& identifier, TPublicType type, TIntermTyped* size)
-{
- //
- // Don't check for reserved word use until after we know it's not in the symbol table,
- // because reserved arrays can be redeclared.
- //
-
- //
- // Can the type be an array?
- //
- if (type.array || type.qualifier == EvqAttribute || type.qualifier == EvqConst) {
- error(line, "cannot declare arrays of this type", TType(type).getCompleteString().c_str(), "");
- return true;
- }
- type.array = true;
-
- //
- // size will be 0 if there is no size declared, otherwise it contains the size
- // declared.
- //
- TIntermConstantUnion* constant = 0;
- if (size) {
- constant = size->getAsConstantUnion();
- if (constant == 0 || constant->getBasicType() != EbtInt || constant->getUnionArrayPointer()->iConst <= 0) {
- error(line, "array size must be a positive integer", identifier.c_str(), "");
- return true;
- }
- }
-
- bool builtIn = false;
- bool sameScope = false;
- TSymbol* symbol = symbolTable.find(identifier, &builtIn, &sameScope);
- if (symbol == 0 || !sameScope) {
- if (reservedErrorCheck(line, identifier))
- return true;
-
- TVariable* variable = new TVariable(&identifier, TType(type));
-
- if (size)
- variable->getType().setArraySize(constant->getUnionArrayPointer()->iConst);
-
- if (! symbolTable.insert(*variable)) {
- delete variable;
- error(line, "INTERNAL ERROR inserting new symbol", identifier.c_str(), "");
- return true;
- }
- } else {
- if (! symbol->isVariable()) {
- error(line, "variable expected", identifier.c_str(), "");
- return true;
- }
-
- TVariable* variable = static_cast<TVariable*>(symbol);
- if (! variable->getType().isArray()) {
- error(line, "redeclaring non-array as array", identifier.c_str(), "");
- return true;
- }
- if (variable->getType().getArraySize() > 0) {
- error(line, "redeclaration of array with size", identifier.c_str(), "");
- return true;
- }
-
- if (variable->getType() != TType(type)) {
- error(line, "redeclaration of array with a different type", identifier.c_str(), "");
- return true;
- }
-
- TType* t = variable->getArrayInformationType();
- while (t != 0) {
- if (t->getMaxArraySize() > constant->getUnionArrayPointer()->iConst) {
- error(line, "higher index value already used for the array", identifier.c_str(), "");
- return true;
- }
- t->setArraySize(constant->getUnionArrayPointer()->iConst);
- t = t->getArrayInformationType();
- }
-
- if (size)
- variable->getType().setArraySize(constant->getUnionArrayPointer()->iConst);
- }
-
- if (voidErrorCheck(line, identifier, type))
- return true;
-
- return false;
-}
-
-bool TParseContext::arraySetMaxSize(TIntermSymbol *node, TType* type, int size, bool updateFlag, TSourceLoc line)
-{
- bool builtIn = false;
- TSymbol* symbol = symbolTable.find(node->getSymbol(), &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);
-
- // 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;
-
- while(tt->getArrayInformationType() != 0) {
- tt = tt->getArrayInformationType();
- tt->setMaxArraySize(size);
- }
-
- return false;
-}
-
-//
-// Do semantic checking for a variable declaration that has no initializer,
-// and update the symbol table.
-//
-// Returns true if there was an error.
-//
-bool TParseContext::nonInitErrorCheck(int line, TString& identifier, TPublicType& type)
-{
- if (reservedErrorCheck(line, identifier))
- recover();
-
- //
- // Make the qualifier make sense, error is issued in a little bit.
- //
- bool constError = false;
- if (type.qualifier == EvqConst) {
- type.qualifier = EvqTemporary;
- constError = true;
- }
-
- TVariable* variable = new TVariable(&identifier, TType(type));
-
- if (! symbolTable.insert(*variable)) {
- error(line, "redefinition", variable->getName().c_str(), "");
- delete variable;
- return true;
- }
- if (constError) {
- error(line, "variables with qualifier 'const' must be initialized", identifier.c_str(), "");
- return true;
- }
-
- if (voidErrorCheck(line, identifier, type))
- return true;
-
- return false;
-}
-
-bool TParseContext::paramErrorCheck(int line, TQualifier qualifier, TQualifier paramQualifier, TType* type)
-{
- if (qualifier != EvqConst && qualifier != EvqTemporary) {
- error(line, "qualifier not allowed on function parameter", getQualifierString(qualifier), "");
- return true;
- }
- if (qualifier == EvqConst && paramQualifier != EvqIn) {
- error(line, "qualifier not allowed with ", getQualifierString(qualifier), getQualifierString(paramQualifier));
- return true;
- }
-
- if (qualifier == EvqConst)
- type->changeQualifier(EvqConstReadOnly);
- else
- type->changeQualifier(paramQualifier);
-
- return false;
-}
-
-/////////////////////////////////////////////////////////////////////////////////
-//
-// Non-Errors.
-//
-/////////////////////////////////////////////////////////////////////////////////
-
-//
-// Look up a function name in the symbol table, and make sure it is a function.
-//
-// Return the function symbol if found, otherwise 0.
-//
-const TFunction* TParseContext::findFunction(int line, TFunction* call, bool *builtIn)
-{
- const TSymbol* symbol = symbolTable.find(call->getMangledName(), builtIn);
-
- if (symbol == 0) {
- error(line, "no matching overloaded function found", call->getName().c_str(), "");
- return 0;
- }
-
- if (! symbol->isFunction()) {
- error(line, "function name expected", call->getName().c_str(), "");
- return 0;
- }
-
- const TFunction* function = static_cast<const TFunction*>(symbol);
-
- return function;
-}
-//
-// Initializers show up in several places in the grammar. Have one set of
-// code to handle them here.
-//
-bool TParseContext::executeInitializer(TSourceLoc line, TString& identifier, TPublicType& pType,
- TIntermTyped* initializer, TIntermNode*& intermNode)
-{
- if (reservedErrorCheck(line, identifier))
- return true;
-
- if (voidErrorCheck(line, identifier, pType))
- return true;
-
- //
- // add variable to symbol table
- //
- TVariable* variable = new TVariable(&identifier, TType(pType));
- if (! symbolTable.insert(*variable)) {
- error(line, "redefinition", variable->getName().c_str(), "");
- return true;
- // don't delete variable, it's used by error recovery, and the pool
- // pop will take care of the memory
- }
-
- //
- // identifier must be of type constant, a global, or a temporary
- //
- TQualifier qualifier = variable->getType().getQualifier();
- if ((qualifier != EvqTemporary) && (qualifier != EvqGlobal) && (qualifier != EvqConst)) {
- error(line, " cannot initialize this type of qualifier ", variable->getType().getQualifierString(), "");
- return true;
- }
- //
- // test for and propagate constant
- //
-
- if (qualifier == EvqConst) {
- if (qualifier != initializer->getType().getQualifier()) {
- error(line, " assigning non-constant to", "=", "'%s'", variable->getType().getCompleteString().c_str());
- variable->getType().changeQualifier(EvqTemporary);
- return true;
- }
- if (TType(pType) != initializer->getType()) {
- error(line, " non-matching types for const initializer ",
- variable->getType().getQualifierString(), "");
- variable->getType().changeQualifier(EvqTemporary);
- return true;
- }
- if (initializer->getAsConstantUnion()) {
- constUnion* unionArray = variable->getConstPointer();
-
- if (pType.size == 1 && TType(pType).getBasicType() != EbtStruct) {
- switch (pType.type ) {
- case EbtInt:
- unionArray->iConst = (initializer->getAsConstantUnion()->getUnionArrayPointer())[0].iConst;
- break;
- case EbtFloat:
- unionArray->fConst = (initializer->getAsConstantUnion()->getUnionArrayPointer())[0].fConst;
- break;
- case EbtBool:
- unionArray->bConst = (initializer->getAsConstantUnion()->getUnionArrayPointer())[0].bConst;
- break;
- default:
- error(line, " cannot initialize constant of this type", "", "");
- return true;
- }
- } else {
- variable->shareConstPointer(initializer->getAsConstantUnion()->getUnionArrayPointer());
- }
- } else if (initializer->getAsAggregate()) {
- bool returnVal = false;
- constUnion* unionArray = variable->getConstPointer();
- if (initializer->getAsAggregate()->getSequence().size() == 1 && initializer->getAsAggregate()->getSequence()[0]->getAsTyped()->getAsConstantUnion()) {
- returnVal = intermediate.parseConstTree(line, initializer, unionArray, initializer->getAsAggregate()->getOp(), symbolTable, variable->getType(), true);
- }
- else {
- returnVal = intermediate.parseConstTree(line, initializer, unionArray, initializer->getAsAggregate()->getOp(), symbolTable, variable->getType());
- }
- intermNode = 0;
- constUnion *arrayUnion = unionArray;
- if (returnVal) {
- arrayUnion = 0;
- variable->getType().changeQualifier(EvqTemporary);
- }
- return returnVal;
- } else if (initializer->getAsSymbolNode()) {
- const TSymbol* symbol = symbolTable.find(initializer->getAsSymbolNode()->getSymbol());
- const TVariable* tVar = static_cast<const TVariable*>(symbol);
-
- constUnion* constArray = tVar->getConstPointer();
- variable->shareConstPointer(constArray);
- } else {
- error(line, " assigning non-constant to", "=", "'%s'", variable->getType().getCompleteString().c_str());
- variable->getType().changeQualifier(EvqTemporary);
- return true;
- }
- }
-
- if (qualifier != EvqConst) {
- TIntermSymbol* intermSymbol = intermediate.addSymbol(variable->getUniqueId(), variable->getName(), variable->getType(), line);
- intermNode = intermediate.addAssign(EOpAssign, intermSymbol, initializer, line);
- if (intermNode == 0) {
- assignError(line, "=", intermSymbol->getCompleteString(), initializer->getCompleteString());
- return true;
- }
- } else
- intermNode = 0;
-
- return false;
-}
-
-//
-// This method checks to see if the given aggregate node has all its children nodes as constants
-// This method does not test if structure members are constant
-//
-bool TParseContext::canNodeBeRemoved(TIntermNode* childNode)
-{
- TIntermAggregate *aggrNode = childNode->getAsAggregate();
- if (!aggrNode)
- return false;
-
- if (!aggrNode->isConstructor() || aggrNode->getOp() == EOpConstructStruct)
- return false;
-
- bool allConstant = true;
-
- // check if all the child nodes are constants so that they can be inserted into
- // the parent node
- if (aggrNode) {
- TIntermSequence &childSequenceVector = aggrNode->getSequence() ;
- for (TIntermSequence::iterator p = childSequenceVector.begin();
- p != childSequenceVector.end(); p++) {
- if (!(*p)->getAsTyped()->getAsConstantUnion())
- return false;
- }
- }
-
- return allConstant;
-}
-
-// This function is used to test for the correctness of the parameters passed to various constructor functions
-// and also convert them to the right datatype if it is allowed and required.
-//
-// Returns 0 for an error or the constructed node (aggregate or typed) for no error.
-//
-TIntermTyped* TParseContext::addConstructor(TIntermNode* node, TType* type, TOperator op, TFunction* fnCall, TSourceLoc line)
-{
- if (node == 0)
- return 0;
-
- TIntermAggregate* aggrNode = node->getAsAggregate();
-
- TTypeList::iterator list;
- TTypeList* structure = 0; // Store the information (vector) about the return type of the structure.
- if (op == EOpConstructStruct) {
- const TType& ttype = fnCall->getReturnType();
- structure = ttype.getStruct();
- list = (*structure).begin();
- }
-
- bool singleArg;
- if (aggrNode) {
- if (aggrNode->getOp() != EOpNull || aggrNode->getSequence().size() == 1)
- singleArg = true;
- else
- singleArg = false;
- } else
- singleArg = true;
-
- TIntermTyped *newNode;
- if (singleArg) {
- if (op == EOpConstructStruct) {
- // If structure constructor is being called for only one parameter inside the structure,
- // we need to call constructStruct function once.
- if (structure->size() != 1) {
- error(line, "Number of constructor parameters does not match the number of structure fields", "constructor", "");
-
- return 0;
- } else
- return constructStruct(node, (*list).type, 1, node->getLine(), false);
- } else {
- newNode = constructBuiltIn(type, op, node, node->getLine(), false);
- if (newNode && newNode->getAsAggregate()) {
- if (canNodeBeRemoved(newNode->getAsAggregate()->getSequence()[0])) {
- TIntermAggregate* returnAggNode = newNode->getAsAggregate()->getSequence()[0]->getAsAggregate();
- newNode = intermediate.removeChildNode(newNode, type, returnAggNode);
- }
- }
- return newNode;
- }
- }
-
- //
- // Handle list of arguments.
- //
- TIntermSequence &sequenceVector = aggrNode->getSequence() ; // Stores the information about the parameter to the constructor
- // if the structure constructor contains more than one parameter, then construct
- // each parameter
- if (op == EOpConstructStruct) {
- if (structure->size() != sequenceVector.size()) { // If the number of parameters to the constructor does not match the expected number of parameters
- error(line, "Number of constructor parameters does not match the number of structure fields", "constructor", "");
-
- return 0;
- }
- }
-
- int paramCount = 0; // keeps a track of the constructor parameter number being checked
-
- // for each parameter to the constructor call, check to see if the right type is passed or convert them
- // to the right type if possible (and allowed).
- // for structure constructors, just check if the right type is passed, no conversion is allowed.
-
- for (TIntermSequence::iterator p = sequenceVector.begin();
- p != sequenceVector.end(); p++, paramCount++) {
- bool move = false;
- if (op == EOpConstructStruct) {
- newNode = constructStruct(*p, (list[paramCount]).type, paramCount+1, node->getLine(), true);
- if (newNode)
- move = true;
- } else {
- newNode = constructBuiltIn(type, op, *p, node->getLine(), true);
-
- if (newNode) {
- if (canNodeBeRemoved(newNode))
- intermediate.removeChildNode(sequenceVector, *type, paramCount, p, newNode->getAsAggregate());
- else
- move = true;
- }
- }
- if (move) {
- sequenceVector.erase(p);
- sequenceVector.insert(p, newNode);
- }
- }
-
- return intermediate.setAggregateOperator(aggrNode, op, line);
-}
-
-// Function for constructor implementation. Calls addUnaryMath with appropriate EOp value
-// for the parameter to the constructor (passed to this function). Essentially, it converts
-// the parameter types correctly. If a constructor expects an int (like ivec2) and is passed a
-// float, then float is converted to int.
-//
-// Returns 0 for an error or the constructed node.
-//
-TIntermTyped* TParseContext::constructBuiltIn(TType* type, TOperator op, TIntermNode* node, TSourceLoc line, bool subset)
-{
- TIntermTyped* newNode;
- TOperator basicOp;
-
- //
- // First, convert types as needed.
- //
- switch (op) {
- case EOpConstructVec2:
- case EOpConstructVec3:
- case EOpConstructVec4:
- case EOpConstructMat2:
- case EOpConstructMat3:
- case EOpConstructMat4:
- case EOpConstructFloat:
- basicOp = EOpConstructFloat;
- break;
-
- case EOpConstructIVec2:
- case EOpConstructIVec3:
- case EOpConstructIVec4:
- case EOpConstructInt:
- basicOp = EOpConstructInt;
- break;
-
- case EOpConstructBVec2:
- case EOpConstructBVec3:
- case EOpConstructBVec4:
- case EOpConstructBool:
- basicOp = EOpConstructBool;
- break;
-
- default:
- error(line, "unsupported construction", "", "");
- recover();
-
- return 0;
- }
- newNode = intermediate.addUnaryMath(basicOp, node, node->getLine(), symbolTable);
- if (newNode == 0) {
- error(line, "can't convert", "constructor", "");
- return 0;
- }
-
- //
- // Now, if there still isn't an operation to do the construction, and we need one, add one.
- //
-
- // Otherwise, skip out early.
- if (subset || newNode != node && newNode->getType() == *type)
- return newNode;
-
- // setAggregateOperator will insert a new node for the constructor, as needed.
- return intermediate.setAggregateOperator(newNode, op, line);
-}
-
-// This function tests for the type of the parameters to the structures constructors. Raises
-// an error message if the expected type does not match the parameter passed to the constructor.
-//
-// Returns 0 for an error or the input node itself if the expected and the given parameter types match.
-//
-TIntermTyped* TParseContext::constructStruct(TIntermNode* node, TType* type, int paramCount, TSourceLoc line, bool subset)
-{
- if (*type == node->getAsTyped()->getType()) {
- if (subset)
- return node->getAsTyped();
- else
- return intermediate.setAggregateOperator(node->getAsTyped(), EOpConstructStruct, line);
- } else {
- error(line, "", "constructor", "cannot convert parameter %d from '%s' to '%s'", paramCount,
- node->getAsTyped()->getType().getBasicString(), type->getBasicString());
- recover();
- }
-
- return 0;
-}
-
-//
-// 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
-// a constant matrix.
-//
-TIntermTyped* TParseContext::addConstVectorNode(TVectorFields& fields, TIntermTyped* node, TSourceLoc line)
-{
- TIntermTyped* typedNode;
- TIntermConstantUnion* tempConstantNode = node->getAsConstantUnion();
- TIntermAggregate* aggregateNode = node->getAsAggregate();
-
- constUnion *unionArray;
- if (tempConstantNode) {
- unionArray = tempConstantNode->getUnionArrayPointer();
-
- if (!unionArray) { // this error message should never be raised
- infoSink.info.message(EPrefixInternalError, "constUnion not initialized in addConstVectorNode function", line);
- recover();
-
- return node;
- }
- } else if (aggregateNode) { // if an aggregate node is present, the value has to be taken from the parse tree
- // for a case like vec(4).xz
- unionArray = new constUnion[aggregateNode->getType().getInstanceSize()];
-
- bool returnVal = false;
- if (aggregateNode->getAsAggregate()->getSequence().size() == 1 && aggregateNode->getAsAggregate()->getSequence()[0]->getAsTyped()->getAsConstantUnion()) {
- returnVal = intermediate.parseConstTree(line, aggregateNode, unionArray, aggregateNode->getOp(), symbolTable, aggregateNode->getType(), true);
- }
- else {
- returnVal = intermediate.parseConstTree(line, aggregateNode, unionArray, aggregateNode->getOp(), symbolTable, aggregateNode->getType());
- }
-
- if (returnVal)
- return 0;
-
- } else { // The node has to be either a symbol node or an aggregate node or a tempConstant node, else, its an error
- error(line, "No aggregate or constant union node available", "Internal Error", "");
- recover();
-
- return 0;
- }
-
- constUnion* constArray = new constUnion[fields.num];
-
- for (int i = 0; i < fields.num; i++) {
- if (fields.offsets[i] >= node->getType().getInstanceSize()) {
- error(line, "", "[", "vector field selection out of range '%d'", fields.offsets[i]);
- recover();
- fields.offsets[i] = 0;
- }
-
- constArray[i] = unionArray[fields.offsets[i]];
-
- }
- typedNode = intermediate.addConstantUnion(constArray, node->getType(), line);
- return typedNode;
-}
-
-//
-// This function returns the column being accessed from a constant matrix. The values are retrieved from
-// the symbol table and parse-tree is built for a vector (each column of a matrix is a vector). The input
-// to the function could either be a symbol node (m[0] where m is a constant matrix)that represents a
-// constant matrix or it could be the tree representation of the constant matrix (s.m1[0] where s is a constant structure)
-//
-TIntermTyped* TParseContext::addConstMatrixNode(int index, TIntermTyped* node, TSourceLoc line)
-{
- TIntermTyped* typedNode;
- TIntermConstantUnion* tempConstantNode = node->getAsConstantUnion();
- TIntermAggregate* aggregateNode = node->getAsAggregate();
-
- if (index >= node->getType().getNominalSize()) {
- error(line, "", "[", "matrix field selection out of range '%d'", index);
- recover();
- index = 0;
- }
-
- if (tempConstantNode) {
- constUnion* unionArray = tempConstantNode->getUnionArrayPointer();
- int size = tempConstantNode->getType().getNominalSize();
- typedNode = intermediate.addConstantUnion(&unionArray[size*index], tempConstantNode->getType(), line);
- } else if (aggregateNode) {
- // for a case like mat4(5)[0]
- constUnion* unionArray = new constUnion[aggregateNode->getType().getInstanceSize()];
- int size = aggregateNode->getType().getNominalSize();
-
- bool returnVal = false;
- if (aggregateNode->getAsAggregate()->getSequence().size() == 1 && aggregateNode->getAsAggregate()->getSequence()[0]->getAsTyped()->getAsConstantUnion()) {
- returnVal = intermediate.parseConstTree(line, aggregateNode, unionArray, aggregateNode->getOp(), symbolTable, aggregateNode->getType(), true);
- }
- else {
- returnVal = intermediate.parseConstTree(line, aggregateNode, unionArray, aggregateNode->getOp(), symbolTable, aggregateNode->getType());
- }
-
- if (!returnVal)
- typedNode = intermediate.addConstantUnion(&unionArray[size*index], aggregateNode->getType(), line);
- else
- return 0;
-
- } else {
- error(line, "No Aggregate or Constant Union node available", "Internal Error", "");
- recover();
-
- return 0;
- }
-
- return typedNode;
-}
-
-//
-// This function returns the value of a particular field inside a constant structure from the symbol table.
-// If there is an embedded/nested struct, it appropriately calls addConstStructNested or addConstStructFromAggr
-// function and returns the parse-tree with the values of the embedded/nested struct.
-//
-TIntermTyped* TParseContext::addConstStruct(TString& identifier, TIntermTyped* node, TSourceLoc line)
-{
- TTypeList* fields = node->getType().getStruct();
- TIntermTyped *typedNode;
- int instanceSize = 0;
- unsigned int index = 0;
- TIntermConstantUnion *tempConstantNode = node->getAsConstantUnion();
- TIntermAggregate* aggregateNode = node->getAsAggregate();
-
- for ( index = 0; index < fields->size(); ++index) {
- if ((*fields)[index].type->getFieldName() == identifier) {
- break;
- } else {
- if ((*fields)[index].type->getStruct())
- //?? We should actually be calling getStructSize() function and not setStructSize. This problem occurs in case
- // of nested/embedded structs.
- instanceSize += (*fields)[index].type->setStructSize((*fields)[index].type->getStruct());
- else
- instanceSize += (*fields)[index].type->getInstanceSize();
- }
- }
-
- if (tempConstantNode) {
- constUnion* constArray = tempConstantNode->getUnionArrayPointer();
-
- typedNode = intermediate.addConstantUnion(constArray+instanceSize, tempConstantNode->getType(), line); // type will be changed in the calling function
- } else if (aggregateNode) {
- // for a case like constStruct(1,v3).i where structure fields is int i and vec3 v3.
-
- constUnion* unionArray = new constUnion[aggregateNode->getType().getStructSize()];
-
- bool returnVal = false;
- if (aggregateNode->getAsAggregate()->getSequence().size() == 1 && aggregateNode->getAsAggregate()->getSequence()[0]->getAsTyped()->getAsConstantUnion()) {
- returnVal = intermediate.parseConstTree(line, aggregateNode, unionArray, aggregateNode->getOp(), symbolTable, aggregateNode->getType(), true);
- }
- else {
- returnVal = intermediate.parseConstTree(line, aggregateNode, unionArray, aggregateNode->getOp(), symbolTable, aggregateNode->getType());
- }
-
- if (!returnVal)
- typedNode = intermediate.addConstantUnion(unionArray+instanceSize, aggregateNode->getType(), line);
- else
- return 0;
-
- } else {
- error(line, "No Aggregate or Constant Union node available", "Internal Error", "");
- recover();
-
- return 0;
- }
-
- return typedNode;
-}
-
-//
-// Initialize all supported extensions to disable
-//
-void TParseContext::initializeExtensionBehavior()
-{
- //
- // example code: extensionBehavior["test"] = EDisable; // where "test" is the name of
- // supported extension
- //
-}
-
-OS_TLSIndex GlobalParseContextIndex = OS_INVALID_TLS_INDEX;
-
-bool InitializeParseContextIndex()
-{
- if (GlobalParseContextIndex != OS_INVALID_TLS_INDEX) {
- assert(0 && "InitializeParseContextIndex(): Parse Context already initalised");
- return false;
- }
-
- //
- // Allocate a TLS index.
- //
- GlobalParseContextIndex = OS_AllocTLSIndex();
-
- if (GlobalParseContextIndex == OS_INVALID_TLS_INDEX) {
- assert(0 && "InitializeParseContextIndex(): Parse Context already initalised");
- return false;
- }
-
- return true;
-}
-
-bool InitializeGlobalParseContext()
-{
- if (GlobalParseContextIndex == OS_INVALID_TLS_INDEX) {
- assert(0 && "InitializeGlobalParseContext(): Parse Context index not initalised");
- return false;
- }
-
- TThreadParseContext *lpParseContext = static_cast<TThreadParseContext *>(OS_GetTLSValue(GlobalParseContextIndex));
- if (lpParseContext != 0) {
- assert(0 && "InitializeParseContextIndex(): Parse Context already initalised");
- return false;
- }
-
- TThreadParseContext *lpThreadData = new TThreadParseContext();
- if (lpThreadData == 0) {
- assert(0 && "InitializeGlobalParseContext(): Unable to create thread parse context");
- return false;
- }
-
- lpThreadData->lpGlobalParseContext = 0;
- OS_SetTLSValue(GlobalParseContextIndex, lpThreadData);
-
- return true;
-}
-
-TParseContextPointer& GetGlobalParseContext()
-{
- //
- // Minimal error checking for speed
- //
-
- TThreadParseContext *lpParseContext = static_cast<TThreadParseContext *>(OS_GetTLSValue(GlobalParseContextIndex));
-
- return lpParseContext->lpGlobalParseContext;
-}
-
-bool FreeParseContext()
-{
- if (GlobalParseContextIndex == OS_INVALID_TLS_INDEX) {
- assert(0 && "FreeParseContext(): Parse Context index not initalised");
- return false;
- }
-
- TThreadParseContext *lpParseContext = static_cast<TThreadParseContext *>(OS_GetTLSValue(GlobalParseContextIndex));
- if (lpParseContext)
- delete lpParseContext;
-
- return true;
-}
-
-bool FreeParseContextIndex()
-{
- OS_TLSIndex tlsiIndex = GlobalParseContextIndex;
-
- if (GlobalParseContextIndex == OS_INVALID_TLS_INDEX) {
- assert(0 && "FreeParseContextIndex(): Parse Context index not initalised");
- return false;
- }
-
- GlobalParseContextIndex = OS_INVALID_TLS_INDEX;
-
- return OS_FreeTLSIndex(tlsiIndex);
-}
|