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// Copyright 2020 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef SRC_WRITER_MSL_GENERATOR_IMPL_H_
#define SRC_WRITER_MSL_GENERATOR_IMPL_H_
#include <sstream>
#include <string>
#include "src/ast/module.h"
#include "src/writer/text_generator.h"
namespace tint {
namespace writer {
namespace msl {
/// Implementation class for WGSL generator
class GeneratorImpl : public TextGenerator {
public:
/// Constructor
GeneratorImpl();
~GeneratorImpl();
/// Generates the result data
/// @param module the module to generate
/// @returns true on successful generation; false otherwise
bool Generate(const ast::Module& module);
/// Handles generate an Expression
/// @param expr the expression
/// @returns true if the expression was emitted
bool EmitExpression(ast::Expression* expr);
/// Handles return statements
/// @param stmt the statement to emit
/// @returns true if the statement was successfully emitted
bool EmitReturn(ast::ReturnStatement* stmt);
/// Handles a brace-enclosed list of statements.
/// @param statements the statements to output
/// @returns true if the statements were emitted
bool EmitStatementBlock(const ast::StatementList& statements);
/// Handles a brace-enclosed list of statements and trailing newline.
/// @param statements the statements to output
/// @returns true if the statements were emitted
bool EmitStatementBlockAndNewline(const ast::StatementList& statements);
/// Handles statement
/// @param stmt the statement to emit
/// @returns true if the statement was emitted
bool EmitStatement(ast::Statement* stmt);
/// Handles generating type
/// @param type the type to generate
/// @param name the name of the variable, only used for array emission
/// @returns true if the type is emitted
bool EmitType(ast::type::Type* type, const std::string& name);
};
} // namespace msl
} // namespace writer
} // namespace tint
#endif // SRC_WRITER_MSL_GENERATOR_IMPL_H_