95 lines
2.6 KiB
C++
95 lines
2.6 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/source.h"
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#include <algorithm>
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#include <sstream>
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#include <utility>
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namespace tint {
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namespace {
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std::vector<std::string> split_lines(const std::string& str) {
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std::stringstream stream(str);
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std::string line;
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std::vector<std::string> lines;
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while (std::getline(stream, line, '\n')) {
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lines.emplace_back(std::move(line));
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}
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return lines;
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}
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} // namespace
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Source::FileContent::FileContent(const std::string& body)
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: data(body), lines(split_lines(body)) {}
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Source::FileContent::~FileContent() = default;
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Source::File::~File() = default;
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std::ostream& operator<<(std::ostream& out, const Source& source) {
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auto rng = source.range;
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if (!source.file_path.empty()) {
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out << source.file_path << ":";
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}
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if (rng.begin.line) {
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out << rng.begin.line << ":";
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if (rng.begin.column) {
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out << rng.begin.column;
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}
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if (source.file_content) {
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out << std::endl << std::endl;
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auto repeat = [&](char c, size_t n) {
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while (n--) {
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out << c;
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}
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};
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for (size_t line = rng.begin.line; line <= rng.end.line; line++) {
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if (line < source.file_content->lines.size() + 1) {
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auto len = source.file_content->lines[line - 1].size();
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out << source.file_content->lines[line - 1];
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out << std::endl;
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if (line == rng.begin.line && line == rng.end.line) {
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// Single line
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repeat(' ', rng.begin.column - 1);
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repeat('^', std::max<size_t>(rng.end.column - rng.begin.column, 1));
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} else if (line == rng.begin.line) {
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// Start of multi-line
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repeat(' ', rng.begin.column - 1);
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repeat('^', len - (rng.begin.column - 1));
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} else if (line == rng.end.line) {
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// End of multi-line
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repeat('^', rng.end.column - 1);
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} else {
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// Middle of multi-line
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repeat('^', len);
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}
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out << std::endl;
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}
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}
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}
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}
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return out;
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}
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} // namespace tint
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