FunctionLookup.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/FunctionLookup.cpp

//
// Copyright 2018 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.
//
// FunctionLookup.cpp: Used for storing function calls that have not yet been resolved during
// parsing.
//

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

namespace sh
{

namespace
{

const char kFunctionMangledNameSeparator = '(';

constexpr const ImmutableString kEmptyName("");

// Helper function for GetMangledNames
// Gets all ordered combinations of elements in list[currentIndex, end]
std::vector<std::vector<int>> GetImplicitConversionCombinations(const std::vector<int> &list)
{
    std::vector<std::vector<int>> target;
    target.push_back(std::vector<int>());

    for (size_t currentIndex = 0; currentIndex < list.size(); currentIndex++)
    {
        size_t prevIterSize = target.size();
        for (size_t copyIndex = 0; copyIndex < prevIterSize; copyIndex++)
        {
            std::vector<int> combination = target[copyIndex];
            combination.push_back(list[currentIndex]);
            target.push_back(combination);
        }
    }

    return target;
}

}  // anonymous namespace

TFunctionLookup::TFunctionLookup(const ImmutableString &name,
                                 const TType *constructorType,
                                 const TSymbol *symbol)
    : mName(name), mConstructorType(constructorType), mThisNode(nullptr), mSymbol(symbol)
{}

// static
TFunctionLookup *TFunctionLookup::CreateConstructor(const TType *type)
{
    ASSERT(type != nullptr);
    return new TFunctionLookup(kEmptyName, type, nullptr);
}

// static
TFunctionLookup *TFunctionLookup::CreateFunctionCall(const ImmutableString &name,
                                                     const TSymbol *symbol)
{
    ASSERT(name != "");
    return new TFunctionLookup(name, nullptr, symbol);
}

const ImmutableString &TFunctionLookup::name() const
{
    return mName;
}

ImmutableString TFunctionLookup::getMangledName() const
{
    return GetMangledName(mName.data(), mArguments);
}

ImmutableString TFunctionLookup::GetMangledName(const char *functionName,
                                                const TIntermSequence &arguments)
{
    std::string newName(functionName);
    newName += kFunctionMangledNameSeparator;

    for (TIntermNode *argument : arguments)
    {
        newName += argument->getAsTyped()->getType().getMangledName();
    }
    return ImmutableString(newName);
}

std::vector<ImmutableString> GetMangledNames(const char *functionName,
                                             const TIntermSequence &arguments)
{
    std::vector<ImmutableString> target;

    std::vector<int> indexes;
    for (int i = 0; i < static_cast<int>(arguments.size()); i++)
    {
        TIntermNode *argument = arguments[i];
        TBasicType argType    = argument->getAsTyped()->getType().getBasicType();
        if (argType == EbtInt || argType == EbtUInt)
        {
            indexes.push_back(i);
        }
    }

    std::vector<std::vector<int>> combinations = GetImplicitConversionCombinations(indexes);
    for (const std::vector<int> &combination : combinations)
    {
        // combination: ordered list of indexes for arguments that should be converted to float
        std::string newName(functionName);
        newName += kFunctionMangledNameSeparator;
        // combination[currentIndex] represents index of next argument to be converted
        int currentIndex = 0;
        for (int i = 0; i < (int)arguments.size(); i++)
        {
            TIntermNode *argument = arguments[i];

            if (currentIndex != static_cast<int>(combination.size()) &&
                combination[currentIndex] == i)
            {
                // Convert
                TType type = argument->getAsTyped()->getType();
                type.setBasicType(EbtFloat);
                newName += type.getMangledName();
                currentIndex++;
            }
            else
            {
                // Don't convert
                newName += argument->getAsTyped()->getType().getMangledName();
            }
        }
        target.push_back(ImmutableString(newName));
    }

    return target;
}

std::vector<ImmutableString> TFunctionLookup::getMangledNamesForImplicitConversions() const
{
    return GetMangledNames(mName.data(), mArguments);
}

bool TFunctionLookup::isConstructor() const
{
    return mConstructorType != nullptr;
}

const TType &TFunctionLookup::constructorType() const
{
    return *mConstructorType;
}

void TFunctionLookup::setThisNode(TIntermTyped *thisNode)
{
    mThisNode = thisNode;
}

TIntermTyped *TFunctionLookup::thisNode() const
{
    return mThisNode;
}

void TFunctionLookup::addArgument(TIntermTyped *argument)
{
    mArguments.push_back(argument);
}

TIntermSequence &TFunctionLookup::arguments()
{
    return mArguments;
}

const TSymbol *TFunctionLookup::symbol() const
{
    return mSymbol;
}

}  // namespace sh

kc3-lang/angle/src/compiler/translator/FunctionLookup.cpp

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kc3-lang/angle /src/compiler/translator/FunctionLookup.cpp