root/trunk/compiler/cppAst/ast/TextEmitter.hpp @ 2
| 2 | krennw | /**
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*
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* OOAS Compiler - C++ AST
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*
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* Copyright 2015, AIT Austrian Institute of Technology.
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* All rights reserved.
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*
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* SEE THE "LICENSE" FILE FOR THE TERMS UNDER WHICH THIS FILE IS PROVIDED.
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*
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* If you modify the file please update the list of contributors below to in-
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* clude your name. Please also stick to the coding convention of using TABs
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* to do the basic (block-level) indentation and spaces for anything after
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* that. (Enable the display of special chars and it should be pretty obvious
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* what this means.) Also, remove all trailing whitespace.
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*
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* Contributors:
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* Willibald Krenn (AIT)
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* Stephan Zimmerer (AIT)
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* Christoph Czurda (AIT)
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*
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*/
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#pragma once
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#include <string>
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#include <cstdint>
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#include <boost/format.hpp>
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namespace Ast {
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/**
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* Shameless copy of the Java "CodeEmitter"...
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*/
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class TextEmitter
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{
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protected:
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std::string m_output;
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unsigned int m_indentLevel;
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const unsigned int m_indentTabWidth;
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public:
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TextEmitter():
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m_output (""),
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m_indentLevel (0),
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m_indentTabWidth(4)
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{}
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void indent()
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{
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for (unsigned int i = 0; i < m_indentLevel * m_indentTabWidth; i++)
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m_output += " ";
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}
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void append(const boost::format& msg) {
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append(msg.str());
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}
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void append(std::int64_t num)
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{
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m_output += std::to_string(num);
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}
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void append(const std::string& text)
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{
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m_output += text;
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}
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void append(const char* text)
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{
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m_output += text;
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}
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void appendLineIncIndent(std::string& text)
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{
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m_indentLevel++;
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appendLine(text);
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}
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void appendLineDecIndent(std::string& text)
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{
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if (m_indentLevel > 0)
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{
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m_indentLevel--;
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string::size_type startIndex = m_output.length() - m_indentTabWidth;
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m_output = m_output.erase(startIndex, std::string::npos);
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}
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appendLine(text);
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}
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void appendLine(const boost::format& msg) {
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appendLine(msg.str());
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}
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void appendLine(const char* text)
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{
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m_output += text;
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appendLine();
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}
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void appendLine(const std::string& text)
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{
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appendLine(text.c_str());
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}
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void appendLine()
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{
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m_output += "\n";
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indent();
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}
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void incIndent()
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{
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m_indentLevel++;
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}
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void decIndent()
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{
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m_indentLevel--;
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}
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void clear()
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{
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m_output = "";
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}
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std::string& toString()
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{
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return m_output;
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}
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};
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} /* namespace Ast */
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