1 | /* Generated By:JavaCC: Do not edit this line. SimpleCharStream.java Version 4.0 */
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2 | package com.framsticks.framclipse.internal.parser;
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3 |
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4 | /**
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5 | * An implementation of interface CharStream, where the stream is assumed to
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6 | * contain only ASCII characters (without unicode processing).
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7 | */
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8 |
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9 | public class CharStreamWithOffset implements CharStream
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10 | {
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11 | public static final boolean staticFlag = false;
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12 | int bufsize;
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13 | int available;
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14 | int tokenBegin;
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15 | public int bufpos = -1;
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16 | protected int bufline[];
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17 | protected int bufcolumn[];
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18 | int charOffset = 0;
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19 |
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20 | protected int column = 0;
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21 | protected int line = 1;
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22 |
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23 | protected boolean prevCharIsCR = false;
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24 | protected boolean prevCharIsLF = false;
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25 |
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26 | protected java.io.Reader inputStream;
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27 |
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28 | protected char[] buffer;
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29 | protected int maxNextCharInd = 0;
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30 | protected int inBuf = 0;
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31 | protected int tabSize = 8;
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32 |
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33 | protected void setTabSize(int i) { tabSize = i; }
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34 | protected int getTabSize(int i) { return tabSize; }
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35 |
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36 |
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37 | protected void ExpandBuff(boolean wrapAround)
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38 | {
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39 | char[] newbuffer = new char[bufsize + 2048];
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40 | int newbufline[] = new int[bufsize + 2048];
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41 | int newbufcolumn[] = new int[bufsize + 2048];
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42 |
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43 | try
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44 | {
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45 | if (wrapAround)
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46 | {
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47 | System.arraycopy(buffer, tokenBegin, newbuffer, 0, bufsize - tokenBegin);
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48 | System.arraycopy(buffer, 0, newbuffer,
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49 | bufsize - tokenBegin, bufpos);
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50 | buffer = newbuffer;
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51 |
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52 | System.arraycopy(bufline, tokenBegin, newbufline, 0, bufsize - tokenBegin);
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53 | System.arraycopy(bufline, 0, newbufline, bufsize - tokenBegin, bufpos);
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54 | bufline = newbufline;
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55 |
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56 | System.arraycopy(bufcolumn, tokenBegin, newbufcolumn, 0, bufsize - tokenBegin);
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57 | System.arraycopy(bufcolumn, 0, newbufcolumn, bufsize - tokenBegin, bufpos);
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58 | bufcolumn = newbufcolumn;
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59 |
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60 | maxNextCharInd = (bufpos += (bufsize - tokenBegin));
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61 | }
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62 | else
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63 | {
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64 | System.arraycopy(buffer, tokenBegin, newbuffer, 0, bufsize - tokenBegin);
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65 | buffer = newbuffer;
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66 |
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67 | System.arraycopy(bufline, tokenBegin, newbufline, 0, bufsize - tokenBegin);
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68 | bufline = newbufline;
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69 |
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70 | System.arraycopy(bufcolumn, tokenBegin, newbufcolumn, 0, bufsize - tokenBegin);
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71 | bufcolumn = newbufcolumn;
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72 |
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73 | maxNextCharInd = (bufpos -= tokenBegin);
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74 | }
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75 | }
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76 | catch (Throwable t)
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77 | {
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78 | throw new Error(t.getMessage());
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79 | }
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80 |
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81 |
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82 | bufsize += 2048;
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83 | available = bufsize;
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84 | tokenBegin = 0;
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85 | }
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86 |
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87 | protected void FillBuff() throws java.io.IOException
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88 | {
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89 | if (maxNextCharInd == available)
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90 | {
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91 | if (available == bufsize)
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92 | {
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93 | if (tokenBegin > 2048)
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94 | {
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95 | bufpos = maxNextCharInd = 0;
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96 | available = tokenBegin;
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97 | }
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98 | else if (tokenBegin < 0)
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99 | bufpos = maxNextCharInd = 0;
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100 | else
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101 | ExpandBuff(false);
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102 | }
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103 | else if (available > tokenBegin)
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104 | available = bufsize;
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105 | else if ((tokenBegin - available) < 2048)
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106 | ExpandBuff(true);
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107 | else
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108 | available = tokenBegin;
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109 | }
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110 |
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111 | int i;
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112 | try {
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113 | if ((i = inputStream.read(buffer, maxNextCharInd,
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114 | available - maxNextCharInd)) == -1)
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115 | {
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116 | inputStream.close();
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117 | throw new java.io.IOException();
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118 | }
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119 | else
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120 | {
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121 | maxNextCharInd += i;
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122 | charOffset += i;
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123 | }
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124 | return;
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125 | }
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126 | catch(java.io.IOException e) {
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127 | --bufpos;
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128 | backup(0);
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129 | if (tokenBegin == -1)
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130 | tokenBegin = bufpos;
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131 | throw e;
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132 | }
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133 | }
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134 |
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135 | public char BeginToken() throws java.io.IOException
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136 | {
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137 | tokenBegin = -1;
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138 | char c = readChar();
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139 | tokenBegin = bufpos;
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140 |
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141 | return c;
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142 | }
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143 |
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144 | protected void UpdateLineColumn(char c)
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145 | {
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146 | column++;
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147 |
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148 | if (prevCharIsLF)
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149 | {
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150 | prevCharIsLF = false;
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151 | line += (column = 1);
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152 | }
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153 | else if (prevCharIsCR)
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154 | {
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155 | prevCharIsCR = false;
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156 | if (c == '\n')
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157 | {
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158 | prevCharIsLF = true;
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159 | }
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160 | else
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161 | line += (column = 1);
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162 | }
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163 |
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164 | switch (c)
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165 | {
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166 | case '\r' :
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167 | prevCharIsCR = true;
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168 | break;
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169 | case '\n' :
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170 | prevCharIsLF = true;
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171 | break;
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172 | case '\t' :
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173 | column--;
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174 | column += (tabSize - (column % tabSize));
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175 | break;
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176 | default :
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177 | break;
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178 | }
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179 |
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180 | bufline[bufpos] = line;
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181 | bufcolumn[bufpos] = column;
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182 | }
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183 |
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184 | public char readChar() throws java.io.IOException
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185 | {
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186 | if (inBuf > 0)
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187 | {
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188 | --inBuf;
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189 |
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190 | if (++bufpos == bufsize)
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191 | bufpos = 0;
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192 |
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193 | return buffer[bufpos];
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194 | }
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195 |
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196 | if (++bufpos >= maxNextCharInd)
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197 | FillBuff();
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198 |
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199 | char c = buffer[bufpos];
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200 |
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201 | UpdateLineColumn(c);
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202 | return (c);
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203 | }
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204 |
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205 | /**
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206 | * @deprecated
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207 | * @see #getEndColumn
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208 | */
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209 |
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210 | public int getColumn() {
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211 | return bufcolumn[bufpos];
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212 | }
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213 |
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214 | /**
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215 | * @deprecated
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216 | * @see #getEndLine
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217 | */
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218 |
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219 | public int getLine() {
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220 | return bufline[bufpos];
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221 | }
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222 |
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223 | public int getEndColumn() {
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224 | return bufcolumn[bufpos];
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225 | }
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226 |
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227 | public int getEndLine() {
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228 | return bufline[bufpos];
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229 | }
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230 |
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231 | public int getBeginOffset() {
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232 | return charOffset - maxNextCharInd + tokenBegin;
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233 | }
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234 |
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235 | public int getOffset() {
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236 | return charOffset - maxNextCharInd + bufpos + 1;
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237 | }
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238 |
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239 |
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240 | public int getBeginColumn() {
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241 | return bufcolumn[tokenBegin];
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242 | }
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243 |
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244 | public int getBeginLine() {
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245 | return bufline[tokenBegin];
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246 | }
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247 |
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248 | public void backup(int amount) {
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249 |
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250 | inBuf += amount;
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251 | if ((bufpos -= amount) < 0)
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252 | bufpos += bufsize;
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253 |
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254 | }
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255 |
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256 | public CharStreamWithOffset(java.io.Reader dstream, int startline,
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257 | int startcolumn, int buffersize)
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258 | {
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259 | inputStream = dstream;
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260 | line = startline;
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261 | column = startcolumn - 1;
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262 |
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263 | available = bufsize = buffersize;
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264 | buffer = new char[buffersize];
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265 | bufline = new int[buffersize];
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266 | bufcolumn = new int[buffersize];
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267 | }
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268 |
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269 | public CharStreamWithOffset(java.io.Reader dstream, int startline,
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270 | int startcolumn)
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271 | {
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272 | this(dstream, startline, startcolumn, 4096);
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273 | }
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274 |
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275 | public CharStreamWithOffset(java.io.Reader dstream)
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276 | {
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277 | this(dstream, 1, 1, 4096);
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278 | }
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279 | public void ReInit(java.io.Reader dstream, int startline,
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280 | int startcolumn, int buffersize)
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281 | {
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282 | inputStream = dstream;
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283 | line = startline;
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284 | column = startcolumn - 1;
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285 |
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286 | if (buffer == null || buffersize != buffer.length)
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287 | {
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288 | available = bufsize = buffersize;
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289 | buffer = new char[buffersize];
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290 | bufline = new int[buffersize];
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291 | bufcolumn = new int[buffersize];
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292 | }
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293 | prevCharIsLF = prevCharIsCR = false;
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294 | tokenBegin = inBuf = maxNextCharInd = 0;
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295 | bufpos = -1;
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296 | }
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297 |
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298 | public void ReInit(java.io.Reader dstream, int startline,
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299 | int startcolumn)
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300 | {
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301 | ReInit(dstream, startline, startcolumn, 4096);
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302 | }
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303 |
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304 | public void ReInit(java.io.Reader dstream)
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305 | {
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306 | ReInit(dstream, 1, 1, 4096);
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307 | }
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308 | public CharStreamWithOffset(java.io.InputStream dstream, String encoding, int startline,
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309 | int startcolumn, int buffersize) throws java.io.UnsupportedEncodingException
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310 | {
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311 | this(encoding == null ? new java.io.InputStreamReader(dstream) : new java.io.InputStreamReader(dstream, encoding), startline, startcolumn, buffersize);
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312 | }
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313 |
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314 | public CharStreamWithOffset(java.io.InputStream dstream, int startline,
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315 | int startcolumn, int buffersize)
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316 | {
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317 | this(new java.io.InputStreamReader(dstream), startline, startcolumn, buffersize);
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318 | }
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319 |
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320 | public CharStreamWithOffset(java.io.InputStream dstream, String encoding, int startline,
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321 | int startcolumn) throws java.io.UnsupportedEncodingException
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322 | {
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323 | this(dstream, encoding, startline, startcolumn, 4096);
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324 | }
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325 |
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326 | public CharStreamWithOffset(java.io.InputStream dstream, int startline,
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327 | int startcolumn)
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328 | {
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329 | this(dstream, startline, startcolumn, 4096);
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330 | }
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331 |
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332 | public CharStreamWithOffset(java.io.InputStream dstream, String encoding) throws java.io.UnsupportedEncodingException
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333 | {
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334 | this(dstream, encoding, 1, 1, 4096);
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335 | }
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336 |
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337 | public CharStreamWithOffset(java.io.InputStream dstream)
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338 | {
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339 | this(dstream, 1, 1, 4096);
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340 | }
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341 |
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342 | public void ReInit(java.io.InputStream dstream, String encoding, int startline,
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343 | int startcolumn, int buffersize) throws java.io.UnsupportedEncodingException
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344 | {
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345 | ReInit(encoding == null ? new java.io.InputStreamReader(dstream) : new java.io.InputStreamReader(dstream, encoding), startline, startcolumn, buffersize);
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346 | }
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347 |
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348 | public void ReInit(java.io.InputStream dstream, int startline,
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349 | int startcolumn, int buffersize)
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350 | {
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351 | ReInit(new java.io.InputStreamReader(dstream), startline, startcolumn, buffersize);
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352 | }
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353 |
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354 | public void ReInit(java.io.InputStream dstream, String encoding) throws java.io.UnsupportedEncodingException
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355 | {
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356 | ReInit(dstream, encoding, 1, 1, 4096);
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357 | }
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358 |
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359 | public void ReInit(java.io.InputStream dstream)
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360 | {
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361 | ReInit(dstream, 1, 1, 4096);
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362 | }
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363 | public void ReInit(java.io.InputStream dstream, String encoding, int startline,
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364 | int startcolumn) throws java.io.UnsupportedEncodingException
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365 | {
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366 | ReInit(dstream, encoding, startline, startcolumn, 4096);
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367 | }
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368 | public void ReInit(java.io.InputStream dstream, int startline,
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369 | int startcolumn)
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370 | {
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371 | ReInit(dstream, startline, startcolumn, 4096);
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372 | }
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373 | public String GetImage()
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374 | {
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375 | if (bufpos >= tokenBegin)
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376 | return new String(buffer, tokenBegin, bufpos - tokenBegin + 1);
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377 | else
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378 | return new String(buffer, tokenBegin, bufsize - tokenBegin) +
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379 | new String(buffer, 0, bufpos + 1);
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380 | }
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381 |
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382 | public char[] GetSuffix(int len)
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383 | {
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384 | char[] ret = new char[len];
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385 |
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386 | if ((bufpos + 1) >= len)
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387 | System.arraycopy(buffer, bufpos - len + 1, ret, 0, len);
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388 | else
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389 | {
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390 | System.arraycopy(buffer, bufsize - (len - bufpos - 1), ret, 0,
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391 | len - bufpos - 1);
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392 | System.arraycopy(buffer, 0, ret, len - bufpos - 1, bufpos + 1);
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393 | }
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394 |
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395 | return ret;
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396 | }
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397 |
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398 | public void Done()
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399 | {
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400 | buffer = null;
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401 | bufline = null;
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402 | bufcolumn = null;
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403 | }
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404 |
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405 | /**
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406 | * Method to adjust line and column numbers for the start of a token.
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407 | */
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408 | public void adjustBeginLineColumn(int newLine, int newCol)
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409 | {
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410 | int start = tokenBegin;
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411 | int len;
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412 |
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413 | if (bufpos >= tokenBegin)
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414 | {
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415 | len = bufpos - tokenBegin + inBuf + 1;
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416 | }
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417 | else
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418 | {
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419 | len = bufsize - tokenBegin + bufpos + 1 + inBuf;
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420 | }
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421 |
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422 | int i = 0, j = 0, k = 0;
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423 | int nextColDiff = 0, columnDiff = 0;
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424 |
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425 | while (i < len &&
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426 | bufline[j = start % bufsize] == bufline[k = ++start % bufsize])
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427 | {
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428 | bufline[j] = newLine;
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429 | nextColDiff = columnDiff + bufcolumn[k] - bufcolumn[j];
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430 | bufcolumn[j] = newCol + columnDiff;
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431 | columnDiff = nextColDiff;
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432 | i++;
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433 | }
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434 |
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435 | if (i < len)
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436 | {
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437 | bufline[j] = newLine++;
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438 | bufcolumn[j] = newCol + columnDiff;
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439 |
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440 | while (i++ < len)
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441 | {
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442 | if (bufline[j = start % bufsize] != bufline[++start % bufsize])
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443 | bufline[j] = newLine++;
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444 | else
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445 | bufline[j] = newLine;
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446 | }
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447 | }
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448 |
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449 | line = bufline[j];
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450 | column = bufcolumn[j];
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451 | }
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452 |
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453 | }
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