root / trunk / compiler / cppAst / ast / TextEmitter.hpp @ 3
| 1 |
/**
|
|---|---|
| 2 |
*
|
| 3 |
* OOAS Compiler - C++ AST
|
| 4 |
*
|
| 5 |
* Copyright 2015, AIT Austrian Institute of Technology.
|
| 6 |
* All rights reserved.
|
| 7 |
*
|
| 8 |
* SEE THE "LICENSE" FILE FOR THE TERMS UNDER WHICH THIS FILE IS PROVIDED.
|
| 9 |
*
|
| 10 |
* If you modify the file please update the list of contributors below to in-
|
| 11 |
* clude your name. Please also stick to the coding convention of using TABs
|
| 12 |
* to do the basic (block-level) indentation and spaces for anything after
|
| 13 |
* that. (Enable the display of special chars and it should be pretty obvious
|
| 14 |
* what this means.) Also, remove all trailing whitespace.
|
| 15 |
*
|
| 16 |
* Contributors:
|
| 17 |
* Willibald Krenn (AIT)
|
| 18 |
* Stephan Zimmerer (AIT)
|
| 19 |
* Christoph Czurda (AIT)
|
| 20 |
*
|
| 21 |
*/
|
| 22 |
|
| 23 |
|
| 24 |
|
| 25 |
|
| 26 |
#pragma once
|
| 27 |
|
| 28 |
#include <string> |
| 29 |
#include <cstdint> |
| 30 |
#include <boost/format.hpp> |
| 31 |
|
| 32 |
|
| 33 |
namespace Ast {
|
| 34 |
|
| 35 |
/**
|
| 36 |
* Shameless copy of the Java "CodeEmitter"...
|
| 37 |
*/
|
| 38 |
|
| 39 |
class TextEmitter |
| 40 |
{
|
| 41 |
protected:
|
| 42 |
std::string m_output;
|
| 43 |
unsigned int m_indentLevel; |
| 44 |
const unsigned int m_indentTabWidth; |
| 45 |
|
| 46 |
public:
|
| 47 |
TextEmitter(): |
| 48 |
m_output (""),
|
| 49 |
m_indentLevel (0),
|
| 50 |
m_indentTabWidth(4)
|
| 51 |
{}
|
| 52 |
|
| 53 |
void indent()
|
| 54 |
{
|
| 55 |
for (unsigned int i = 0; i < m_indentLevel * m_indentTabWidth; i++) |
| 56 |
m_output += " ";
|
| 57 |
} |
| 58 |
|
| 59 |
void append(const boost::format& msg) { |
| 60 |
append(msg.str()); |
| 61 |
} |
| 62 |
|
| 63 |
void append(std::int64_t num)
|
| 64 |
{
|
| 65 |
m_output += std::to_string(num); |
| 66 |
} |
| 67 |
|
| 68 |
void append(const std::string& text) |
| 69 |
{
|
| 70 |
m_output += text; |
| 71 |
} |
| 72 |
|
| 73 |
void append(const char* text) |
| 74 |
{
|
| 75 |
m_output += text; |
| 76 |
} |
| 77 |
|
| 78 |
void appendLineIncIndent(std::string& text) |
| 79 |
{
|
| 80 |
m_indentLevel++; |
| 81 |
appendLine(text); |
| 82 |
} |
| 83 |
|
| 84 |
void appendLineDecIndent(std::string& text) |
| 85 |
{
|
| 86 |
if (m_indentLevel > 0) |
| 87 |
{
|
| 88 |
m_indentLevel--; |
| 89 |
string::size_type startIndex = m_output.length() - m_indentTabWidth;
|
| 90 |
m_output = m_output.erase(startIndex, std::string::npos);
|
| 91 |
} |
| 92 |
appendLine(text); |
| 93 |
} |
| 94 |
|
| 95 |
void appendLine(const boost::format& msg) { |
| 96 |
appendLine(msg.str()); |
| 97 |
} |
| 98 |
|
| 99 |
void appendLine(const char* text) |
| 100 |
{
|
| 101 |
m_output += text; |
| 102 |
appendLine(); |
| 103 |
} |
| 104 |
|
| 105 |
void appendLine(const std::string& text) |
| 106 |
{
|
| 107 |
appendLine(text.c_str()); |
| 108 |
} |
| 109 |
|
| 110 |
void appendLine()
|
| 111 |
{
|
| 112 |
m_output += "\n";
|
| 113 |
indent(); |
| 114 |
} |
| 115 |
|
| 116 |
|
| 117 |
|
| 118 |
void incIndent()
|
| 119 |
{
|
| 120 |
m_indentLevel++; |
| 121 |
} |
| 122 |
|
| 123 |
void decIndent()
|
| 124 |
{
|
| 125 |
m_indentLevel--; |
| 126 |
} |
| 127 |
|
| 128 |
void clear()
|
| 129 |
{
|
| 130 |
m_output = "";
|
| 131 |
} |
| 132 |
|
| 133 |
|
| 134 |
std::string& toString()
|
| 135 |
{
|
| 136 |
return m_output;
|
| 137 |
} |
| 138 |
}; |
| 139 |
|
| 140 |
} /* namespace Ast */
|
| 141 |
|