[193] | 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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