Method arraySizeCheck

glslang/HLSL/hlslParseHelper.cpp:6855–6886

Do size checking for an array type's size.

// Do size checking for an array type's size.
//
void HlslParseContext::arraySizeCheck(const TSourceLoc& loc, TIntermTyped* expr, TArraySize& sizePair)
{
    bool isConst = false;
    sizePair.size = 1;
    sizePair.node = nullptr;

    TIntermConstantUnion* constant = expr->getAsConstantUnion();
    if (constant) {
        // handle true (non-specialization) constant
        sizePair.size = constant->getConstArray()[0].getIConst();
        isConst = true;
    } else {
        // see if it's a specialization constant instead
        if (expr->getQualifier().isSpecConstant()) {
            isConst = true;
            sizePair.node = expr;
            TIntermSymbol* symbol = expr->getAsSymbolNode();
            if (symbol && symbol->getConstArray().size() > 0)
                sizePair.size = symbol->getConstArray()[0].getIConst();
        }
    }

    if (! isConst || (expr->getBasicType() != EbtInt && expr->getBasicType() != EbtUint)) {
        error(loc, "array size must be a constant integer expression", "", "");
        return;
    }

    if (sizePair.size <= 0) {
        error(loc, "array size must be a positive integer", "", "");
        return;
    }
}

//
// Require array to be completely sized