104 lines
2.5 KiB
C++
104 lines
2.5 KiB
C++
// Copyright 2020 The Tint Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "src/ast/if_statement.h"
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#include "src/ast/else_statement.h"
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namespace tint {
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namespace ast {
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IfStatement::IfStatement() : Statement() {}
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IfStatement::IfStatement(std::unique_ptr<Expression> condition,
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StatementList body)
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: Statement(), condition_(std::move(condition)), body_(std::move(body)) {}
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IfStatement::IfStatement(const Source& source,
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std::unique_ptr<Expression> condition,
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StatementList body)
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: Statement(source),
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condition_(std::move(condition)),
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body_(std::move(body)) {}
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IfStatement::IfStatement(IfStatement&&) = default;
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IfStatement::~IfStatement() = default;
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bool IfStatement::IsIf() const {
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return true;
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}
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bool IfStatement::IsValid() const {
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if (condition_ == nullptr || !condition_->IsValid())
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return false;
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for (const auto& stmt : body_) {
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if (stmt == nullptr || !stmt->IsValid())
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return false;
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}
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bool found_else = false;
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for (const auto& el : else_statements_) {
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// Else statement must be last
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if (found_else)
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return false;
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if (el == nullptr || !el->IsValid())
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return false;
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if (el->condition() == nullptr)
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found_else = true;
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}
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return true;
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}
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void IfStatement::to_str(std::ostream& out, size_t indent) const {
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make_indent(out, indent);
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out << "If{" << std::endl;
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// Open if conditional
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make_indent(out, indent + 2);
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out << "(" << std::endl;
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condition_->to_str(out, indent + 4);
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// Close if conditional
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make_indent(out, indent + 2);
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out << ")" << std::endl;
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// Open if body
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make_indent(out, indent + 2);
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out << "{" << std::endl;
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for (const auto& stmt : body_)
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stmt->to_str(out, indent + 4);
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// Close the if body
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make_indent(out, indent + 2);
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out << "}" << std::endl;
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// Close the If
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make_indent(out, indent);
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out << "}" << std::endl;
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for (const auto& e : else_statements_) {
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e->to_str(out, indent);
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}
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}
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} // namespace ast
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} // namespace tint
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