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// GEN_BUILD:CONDITION(tint_build_wgsl_reader)

#include <iostream>

#include "src/tint/cmd/fuzz/wgsl/fuzz.h"
#include "src/tint/lang/msl/writer/helpers/generate_bindings.h"
#include "src/tint/lang/msl/writer/writer.h"
#include "src/tint/lang/wgsl/ast/module.h"
#include "src/tint/lang/wgsl/sem/variable.h"

namespace tint::msl::writer {
namespace {

bool CanRun(const Program& program) {
    if (program.AST().HasOverrides()) {
        // MSL writer assumes the SubstituteOverride and SingleEntryPoint transforms have been run.
        return false;
    }

    // Check for push constants, which the MSL writer does not support.
    for (auto* global : program.AST().GlobalVariables()) {
        if (program.Sem().Get(global)->AddressSpace() == core::AddressSpace::kPushConstant) {
            return false;
        }
    }

    return true;
}

void ASTFuzzer(const tint::Program& program, const fuzz::wgsl::Context& context, Options options) {
    if (!CanRun(program)) {
        return;
    }

    options.bindings = GenerateBindings(program);

    auto res = tint::msl::writer::Generate(program, options);

    if (res == Success && context.options.dump) {
        std::cout << "Dumping generated MSL:\n" << res->msl << std::endl;
    }
}

}  // namespace
}  // namespace tint::msl::writer

TINT_WGSL_PROGRAM_FUZZER(tint::msl::writer::ASTFuzzer);