74 lines
1.9 KiB
C++
74 lines
1.9 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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#ifndef SRC_WRITER_TEXT_GENERATOR_H_
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#define SRC_WRITER_TEXT_GENERATOR_H_
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#include <sstream>
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#include <string>
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#include "src/diagnostic/diagnostic.h"
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namespace tint {
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namespace writer {
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/// Helper methods for generators which are creating text output
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class TextGenerator {
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public:
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/// Constructor
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TextGenerator();
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~TextGenerator();
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/// Increment the emitter indent level
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void increment_indent() { indent_ += 2; }
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/// Decrement the emiter indent level
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void decrement_indent() {
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if (indent_ < 2) {
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indent_ = 0;
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return;
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}
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indent_ -= 2;
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}
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/// Writes the current indent to the output stream
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void make_indent();
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/// Writes the current indent to `out`
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/// @param out the stream to write the indent to
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void make_indent(std::ostream& out) const;
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/// @returns the result data
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std::string result() const { return out_.str(); }
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/// @returns the list of diagnostics raised by the generator.
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const diag::List& Diagnostics() const { return diagnostics_; }
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/// @returns the error
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std::string error() const { return diagnostics_.str(); }
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protected:
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/// The text output stream
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std::ostringstream out_;
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/// Diagnostics generated by the generator
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diag::List diagnostics_;
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private:
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size_t indent_ = 0;
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};
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} // namespace writer
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} // namespace tint
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#endif // SRC_WRITER_TEXT_GENERATOR_H_
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