Source/WebGPU/WGSL/WGSLShaderModule.cpp

/*
 * Copyright (c) 2024 Apple Inc. All rights reserved.
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 *
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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#include "config.h"
#include "WGSLShaderModule.h"

#include "WGSL.h"
#include <wtf/TZoneMallocInlines.h>

namespace WGSL {

WTF_MAKE_TZONE_ALLOCATED_IMPL(ShaderModule);

std::optional<Error> ShaderModule::validateOverrides(const HashMap<String, ConstantValue>& constantValues)
{
    for (const auto& [expression, validators] : m_overrideValidations) {
        auto maybeValue = evaluate(*expression, constantValues);
        if (!maybeValue)
            return { Error("failed to evaluate override expression"_s, expression->span()) };

        for (const auto& validator : validators) {
            if (auto maybeError = validator(*maybeValue))
                return { Error(*maybeError, expression->span()) };
        }
    }
    for (const auto& validator : m_finalOverrideValidations) {
        if (auto maybeError = validator())
            return maybeError;
    }
    return std::nullopt;
}

} // namespace WGSL