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author | Alex Beregszaszi <alex@rtfs.hu> | 2017-06-15 07:39:01 +0800 |
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committer | Alex Beregszaszi <alex@rtfs.hu> | 2017-08-11 05:47:09 +0800 |
commit | d5188fb6713f6e34d5769b97a1446dc586e71bab (patch) | |
tree | ed3968f661f83d73c0e08df9a0cccaee41a44692 /libdevcore | |
parent | abe6eb983073d5a8e6d5ac469e4c437ea421c79d (diff) | |
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Introduce IndentedWriter
Diffstat (limited to 'libdevcore')
-rw-r--r-- | libdevcore/IndentedWriter.cpp | 65 | ||||
-rw-r--r-- | libdevcore/IndentedWriter.h | 67 |
2 files changed, 132 insertions, 0 deletions
diff --git a/libdevcore/IndentedWriter.cpp b/libdevcore/IndentedWriter.cpp new file mode 100644 index 00000000..96aaf0fa --- /dev/null +++ b/libdevcore/IndentedWriter.cpp @@ -0,0 +1,65 @@ +/* + This file is part of solidity. + + solidity is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + solidity is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with solidity. If not, see <http://www.gnu.org/licenses/>. +*/ +/** + * @date 2017 + * Indented text writer. + */ + +#include <libdevcore/IndentedWriter.h> +#include <libdevcore/Assertions.h> + +using namespace std; +using namespace dev; + +string IndentedWriter::format() const +{ + string result; + for (auto const& line: m_lines) + result += string(line.indentation * 4, ' ') + line.contents + "\n"; + return result; +} + +void IndentedWriter::newLine() +{ + if (!m_lines.back().contents.empty()) + m_lines.push_back({ string(), m_lines.back().indentation }); +} + +void IndentedWriter::indent() +{ + newLine(); + m_lines.back().indentation++; +} + +void IndentedWriter::unindent() +{ + newLine(); + assertThrow(m_lines.back().indentation > 0, IndentedWriterError, "Negative indentation."); + m_lines.back().indentation--; +} + +void IndentedWriter::add(string const& _str) +{ + m_lines.back().contents += _str; +} + +void IndentedWriter::addLine(string const& _line) +{ + newLine(); + add(_line); + newLine(); +} diff --git a/libdevcore/IndentedWriter.h b/libdevcore/IndentedWriter.h new file mode 100644 index 00000000..4ddd87ed --- /dev/null +++ b/libdevcore/IndentedWriter.h @@ -0,0 +1,67 @@ +/* + This file is part of solidity. + + solidity is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + solidity is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with solidity. If not, see <http://www.gnu.org/licenses/>. +*/ +/** + * @date 2017 + * Indented text writer. + */ + +#pragma once + +#include <vector> +#include <string> + +#include <libdevcore/Exceptions.h> + +namespace dev +{ + +DEV_SIMPLE_EXCEPTION(IndentedWriterError); + +class IndentedWriter +{ +public: + explicit IndentedWriter(): m_lines(std::vector<Line>{{std::string(), 0}}) {} + + // Returns the formatted output. + std::string format() const; + + // Go one indentation level in. + void indent(); + + // Go one indentation level out. + void unindent(); + + // Add text. + void add(std::string const& _str); + + // Add text with new line. + void addLine(std::string const& _line); + + // Add new line. + void newLine(); + +private: + struct Line + { + std::string contents; + unsigned indentation; + }; + + std::vector<Line> m_lines; +}; + +} |