Class AccessChainTraverser

glslang/MachineIndependent/ParseHelper.cpp:9090–9131

Generates a valid GLSL dereferencing string for the input TIntermNode

// Generates a valid GLSL dereferencing string for the input TIntermNode
//
struct AccessChainTraverser : public TIntermTraverser {
    AccessChainTraverser() : TIntermTraverser(false, false, true)
    {}

    TString path = "";
    TStorageQualifier topLevelStorageQualifier = TStorageQualifier::EvqLast;

    bool visitBinary(TVisit, TIntermBinary* binary) override {
        if (binary->getOp() == EOpIndexDirectStruct)
        {
            const TTypeList& members = *binary->getLeft()->getType().getStruct();
            const TTypeLoc& member =
                members[binary->getRight()->getAsConstantUnion()->getConstArray()[0].getIConst()];
            TString memberName = member.type->getFieldName();

            if (path != "")
                path.append(".");

            path.append(memberName);
        }

        if (binary->getOp() == EOpIndexDirect)
        {
            const TConstUnionArray& indices = binary->getRight()->getAsConstantUnion()->getConstArray();
            for (int index = 0; index < indices.size(); ++index)
            {
                path.append("[");
                path.append(String(indices[index].getIConst()));
                path.append("]");
            }
        }

        return true;
    }

    void visitSymbol(TIntermSymbol* symbol) override {
        if (symbol->getType().isOpaque())
            topLevelStorageQualifier = symbol->getQualifier().storage;
        if (!IsAnonymous(symbol->getName()))
            path.append(symbol->getName());
    }
};

TIntermNode* TParseContext::vkRelaxedRemapFunctionArgument(const TSourceLoc& loc, TFunction* function, TIntermTyped* intermTyped)
{