IntermNode_util.cpp

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Author : Stuart Morgan
Date : 2019-08-14 12:25:12
Hash : 9d737966
Message : Standardize copyright notices to project style For all "ANGLE Project" copyrights, standardize to the format specified by the style guide. Changes: - "Copyright (c)" and "Copyright(c)" changed to just "Copyright". - Removed the second half of date ranges ("Y1Y1-Y2Y2"->"Y1Y1"). - Fixed a small number of files that had no copyright date using the initial commit year from the version control history. - Fixed one instance of copyright being "The ANGLE Project" rather than "The ANGLE Project Authors" These changes are applied both to the copyright of source file, and where applicable to copyright statements that are generated by templates. BUG=angleproject:3811 Change-Id: I973dd65e4ef9deeba232d5be74c768256a0eb2e5 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1754397 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>

src/compiler/translator/tree_util/IntermNode_util.cpp

//
// Copyright 2017 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.
//
// IntermNode_util.cpp: High-level utilities for creating AST nodes and node hierarchies. Mostly
// meant to be used in AST transforms.

#include "compiler/translator/tree_util/IntermNode_util.h"

#include "compiler/translator/FunctionLookup.h"
#include "compiler/translator/SymbolTable.h"

namespace sh
{

namespace
{

const TFunction *LookUpBuiltInFunction(const char *name,
                                       const TIntermSequence *arguments,
                                       const TSymbolTable &symbolTable,
                                       int shaderVersion)
{
    const ImmutableString &mangledName = TFunctionLookup::GetMangledName(name, *arguments);
    const TSymbol *symbol              = symbolTable.findBuiltIn(mangledName, shaderVersion);
    if (symbol)
    {
        ASSERT(symbol->isFunction());
        return static_cast<const TFunction *>(symbol);
    }
    return nullptr;
}

}  // anonymous namespace

TIntermFunctionPrototype *CreateInternalFunctionPrototypeNode(const TFunction &func)
{
    return new TIntermFunctionPrototype(&func);
}

TIntermFunctionDefinition *CreateInternalFunctionDefinitionNode(const TFunction &func,
                                                                TIntermBlock *functionBody)
{
    return new TIntermFunctionDefinition(new TIntermFunctionPrototype(&func), functionBody);
}

TIntermTyped *CreateZeroNode(const TType &type)
{
    TType constType(type);
    constType.setQualifier(EvqConst);

    if (!type.isArray() && type.getBasicType() != EbtStruct)
    {
        size_t size       = constType.getObjectSize();
        TConstantUnion *u = new TConstantUnion[size];
        for (size_t i = 0; i < size; ++i)
        {
            switch (type.getBasicType())
            {
                case EbtFloat:
                    u[i].setFConst(0.0f);
                    break;
                case EbtInt:
                    u[i].setIConst(0);
                    break;
                case EbtUInt:
                    u[i].setUConst(0u);
                    break;
                case EbtBool:
                    u[i].setBConst(false);
                    break;
                default:
                    // CreateZeroNode is called by ParseContext that keeps parsing even when an
                    // error occurs, so it is possible for CreateZeroNode to be called with
                    // non-basic types. This happens only on error condition but CreateZeroNode
                    // needs to return a value with the correct type to continue the typecheck.
                    // That's why we handle non-basic type by setting whatever value, we just need
                    // the type to be right.
                    u[i].setIConst(42);
                    break;
            }
        }

        TIntermConstantUnion *node = new TIntermConstantUnion(u, constType);
        return node;
    }

    TIntermSequence *arguments = new TIntermSequence();

    if (type.isArray())
    {
        TType elementType(type);
        elementType.toArrayElementType();

        size_t arraySize = type.getOutermostArraySize();
        for (size_t i = 0; i < arraySize; ++i)
        {
            arguments->push_back(CreateZeroNode(elementType));
        }
    }
    else
    {
        ASSERT(type.getBasicType() == EbtStruct);

        const TStructure *structure = type.getStruct();
        for (const auto &field : structure->fields())
        {
            arguments->push_back(CreateZeroNode(*field->type()));
        }
    }

    return TIntermAggregate::CreateConstructor(constType, arguments);
}

TIntermConstantUnion *CreateFloatNode(float value)
{
    TConstantUnion *u = new TConstantUnion[1];
    u[0].setFConst(value);

    TType type(EbtFloat, EbpUndefined, EvqConst, 1);
    return new TIntermConstantUnion(u, type);
}

TIntermConstantUnion *CreateIndexNode(int index)
{
    TConstantUnion *u = new TConstantUnion[1];
    u[0].setIConst(index);

    TType type(EbtInt, EbpUndefined, EvqConst, 1);
    return new TIntermConstantUnion(u, type);
}

TIntermConstantUnion *CreateBoolNode(bool value)
{
    TConstantUnion *u = new TConstantUnion[1];
    u[0].setBConst(value);

    TType type(EbtBool, EbpUndefined, EvqConst, 1);
    return new TIntermConstantUnion(u, type);
}

TVariable *CreateTempVariable(TSymbolTable *symbolTable, const TType *type)
{
    ASSERT(symbolTable != nullptr);
    // TODO(oetuaho): Might be useful to sanitize layout qualifier etc. on the type of the created
    // variable. This might need to be done in other places as well.
    return new TVariable(symbolTable, kEmptyImmutableString, type, SymbolType::AngleInternal);
}

TVariable *CreateTempVariable(TSymbolTable *symbolTable, const TType *type, TQualifier qualifier)
{
    ASSERT(symbolTable != nullptr);
    if (type->getQualifier() == qualifier)
    {
        return CreateTempVariable(symbolTable, type);
    }
    TType *typeWithQualifier = new TType(*type);
    typeWithQualifier->setQualifier(qualifier);
    return CreateTempVariable(symbolTable, typeWithQualifier);
}

TIntermSymbol *CreateTempSymbolNode(const TVariable *tempVariable)
{
    ASSERT(tempVariable->symbolType() == SymbolType::AngleInternal);
    ASSERT(tempVariable->getType().getQualifier() == EvqTemporary ||
           tempVariable->getType().getQualifier() == EvqConst ||
           tempVariable->getType().getQualifier() == EvqGlobal);
    return new TIntermSymbol(tempVariable);
}

TIntermDeclaration *CreateTempDeclarationNode(const TVariable *tempVariable)
{
    TIntermDeclaration *tempDeclaration = new TIntermDeclaration();
    tempDeclaration->appendDeclarator(CreateTempSymbolNode(tempVariable));
    return tempDeclaration;
}

TIntermDeclaration *CreateTempInitDeclarationNode(const TVariable *tempVariable,
                                                  TIntermTyped *initializer)
{
    ASSERT(initializer != nullptr);
    TIntermSymbol *tempSymbol           = CreateTempSymbolNode(tempVariable);
    TIntermDeclaration *tempDeclaration = new TIntermDeclaration();
    TIntermBinary *tempInit             = new TIntermBinary(EOpInitialize, tempSymbol, initializer);
    tempDeclaration->appendDeclarator(tempInit);
    return tempDeclaration;
}

TIntermBinary *CreateTempAssignmentNode(const TVariable *tempVariable, TIntermTyped *rightNode)
{
    ASSERT(rightNode != nullptr);
    TIntermSymbol *tempSymbol = CreateTempSymbolNode(tempVariable);
    return new TIntermBinary(EOpAssign, tempSymbol, rightNode);
}

TVariable *DeclareTempVariable(TSymbolTable *symbolTable,
                               const TType *type,
                               TQualifier qualifier,
                               TIntermDeclaration **declarationOut)
{
    TVariable *variable = CreateTempVariable(symbolTable, type, qualifier);
    *declarationOut     = CreateTempDeclarationNode(variable);
    return variable;
}

TVariable *DeclareTempVariable(TSymbolTable *symbolTable,
                               TIntermTyped *initializer,
                               TQualifier qualifier,
                               TIntermDeclaration **declarationOut)
{
    TVariable *variable =
        CreateTempVariable(symbolTable, new TType(initializer->getType()), qualifier);
    *declarationOut = CreateTempInitDeclarationNode(variable, initializer);
    return variable;
}

const TVariable *DeclareInterfaceBlock(TIntermBlock *root,
                                       TSymbolTable *symbolTable,
                                       TFieldList *fieldList,
                                       TQualifier qualifier,
                                       const TMemoryQualifier &memoryQualifier,
                                       uint32_t arraySize,
                                       const ImmutableString &blockTypeName,
                                       const ImmutableString &blockVariableName)
{
    // Define an interface block.
    TLayoutQualifier layoutQualifier = TLayoutQualifier::Create();
    TInterfaceBlock *interfaceBlock  = new TInterfaceBlock(
        symbolTable, blockTypeName, fieldList, layoutQualifier, SymbolType::AngleInternal);

    // Turn the inteface block into a declaration.
    TType *interfaceBlockType = new TType(interfaceBlock, qualifier, layoutQualifier);
    interfaceBlockType->setMemoryQualifier(memoryQualifier);
    if (arraySize > 0)
    {
        interfaceBlockType->makeArray(arraySize);
    }

    TIntermDeclaration *interfaceBlockDecl = new TIntermDeclaration;
    TVariable *interfaceBlockVar = new TVariable(symbolTable, blockVariableName, interfaceBlockType,
                                                 SymbolType::AngleInternal);
    TIntermSymbol *interfaceBlockDeclarator = new TIntermSymbol(interfaceBlockVar);
    interfaceBlockDecl->appendDeclarator(interfaceBlockDeclarator);

    // Insert the declarations before the first function.
    TIntermSequence *insertSequence = new TIntermSequence;
    insertSequence->push_back(interfaceBlockDecl);

    size_t firstFunctionIndex = FindFirstFunctionDefinitionIndex(root);
    root->insertChildNodes(firstFunctionIndex, *insertSequence);

    return interfaceBlockVar;
}

TIntermBlock *EnsureBlock(TIntermNode *node)
{
    if (node == nullptr)
        return nullptr;
    TIntermBlock *blockNode = node->getAsBlock();
    if (blockNode != nullptr)
        return blockNode;

    blockNode = new TIntermBlock();
    blockNode->setLine(node->getLine());
    blockNode->appendStatement(node);
    return blockNode;
}

TIntermSymbol *ReferenceGlobalVariable(const ImmutableString &name, const TSymbolTable &symbolTable)
{
    const TVariable *var = static_cast<const TVariable *>(symbolTable.findGlobal(name));
    ASSERT(var);
    return new TIntermSymbol(var);
}

TIntermSymbol *ReferenceBuiltInVariable(const ImmutableString &name,
                                        const TSymbolTable &symbolTable,
                                        int shaderVersion)
{
    const TVariable *var =
        static_cast<const TVariable *>(symbolTable.findBuiltIn(name, shaderVersion));
    ASSERT(var);
    return new TIntermSymbol(var);
}

TIntermTyped *CreateBuiltInFunctionCallNode(const char *name,
                                            TIntermSequence *arguments,
                                            const TSymbolTable &symbolTable,
                                            int shaderVersion)
{
    const TFunction *fn = LookUpBuiltInFunction(name, arguments, symbolTable, shaderVersion);
    ASSERT(fn);
    TOperator op = fn->getBuiltInOp();
    if (op != EOpCallBuiltInFunction && arguments->size() == 1)
    {
        return new TIntermUnary(op, arguments->at(0)->getAsTyped(), fn);
    }
    return TIntermAggregate::CreateBuiltInFunctionCall(*fn, arguments);
}

}  // namespace sh

kc3-lang/angle/src/compiler/translator/tree_util/IntermNode_util.cpp

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kc3-lang/angle /src/compiler/translator/tree_util/IntermNode_util.cpp