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annotate truffle/com.oracle.truffle.sl/src/com/oracle/truffle/sl/parser/Scanner.java @ 21951:9c8c0937da41

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Moving all sources into truffle subdirectory
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Wed, 17 Jun 2015 10:58:08 +0200
parents graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/parser/Scanner.java@b1530a6cce8c
children c07e64ecb528
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1 /*
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2 * Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23
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24 // The content of this file is automatically generated. DO NOT EDIT.
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25
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26 package com.oracle.truffle.sl.parser;
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27
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28 import java.io.*;
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29 import java.util.*;
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30
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31 // Checkstyle: stop
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32 // @formatter:off
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33 class Token {
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34
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35 public int kind; // token kind
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36 public int pos; // token position in bytes in the source text (starting at 0)
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37 public int charPos; // token position in characters in the source text (starting at 0)
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38 public int col; // token column (starting at 1)
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39 public int line; // token line (starting at 1)
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40 public String val; // token value
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41 public Token next; // ML 2005-03-11 Peek tokens are kept in linked list
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42 }
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43
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44 // -----------------------------------------------------------------------------------
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45 // Buffer
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46 // -----------------------------------------------------------------------------------
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47 class Buffer {
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48
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49 // This Buffer supports the following cases:
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50 // 1) seekable stream (file)
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51 // a) whole stream in buffer
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52 // b) part of stream in buffer
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53 // 2) non seekable stream (network, console)
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54
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55 public static final int EOF = Character.MAX_VALUE + 1;
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56 private static final int MIN_BUFFER_LENGTH = 1024; // 1KB
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57 private static final int MAX_BUFFER_LENGTH = MIN_BUFFER_LENGTH * 64; // 64KB
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58 private byte[] buf; // input buffer
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59 private int bufStart; // position of first byte in buffer relative to input stream
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60 private int bufLen; // length of buffer
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61 private int fileLen; // length of input stream (may change if stream is no file)
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62 private int bufPos; // current position in buffer
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63 private RandomAccessFile file; // input stream (seekable)
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64 private InputStream stream; // growing input stream (e.g.: console, network)
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65
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66 public Buffer(InputStream s) {
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67 stream = s;
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68 fileLen = bufLen = bufStart = bufPos = 0;
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69 buf = new byte[MIN_BUFFER_LENGTH];
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70 }
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71
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72 public Buffer(String fileName) {
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73 try {
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74 file = new RandomAccessFile(fileName, "r");
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75 fileLen = (int) file.length();
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76 bufLen = Math.min(fileLen, MAX_BUFFER_LENGTH);
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77 buf = new byte[bufLen];
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78 bufStart = Integer.MAX_VALUE; // nothing in buffer so far
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79 if (fileLen > 0)
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80 setPos(0); // setup buffer to position 0 (start)
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81 else
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82 bufPos = 0; // index 0 is already after the file, thus setPos(0) is invalid
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83 if (bufLen == fileLen)
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84 Close();
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85 } catch (IOException e) {
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86 throw new FatalError("Could not open file " + fileName);
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87 }
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88 }
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89
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90 // don't use b after this call anymore
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91 // called in UTF8Buffer constructor
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92 protected Buffer(Buffer b) {
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93 buf = b.buf;
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94 bufStart = b.bufStart;
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95 bufLen = b.bufLen;
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96 fileLen = b.fileLen;
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97 bufPos = b.bufPos;
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98 file = b.file;
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99 stream = b.stream;
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100 // keep finalize from closing the file
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101 b.file = null;
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102 }
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103
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104 @Override
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105 protected void finalize() throws Throwable {
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106 super.finalize();
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107 Close();
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108 }
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109
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110 protected void Close() {
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111 if (file != null) {
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112 try {
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113 file.close();
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114 file = null;
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115 } catch (IOException e) {
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116 throw new FatalError(e.getMessage());
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117 }
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118 }
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119 }
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120
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121 public int Read() {
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122 if (bufPos < bufLen) {
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123 return buf[bufPos++] & 0xff; // mask out sign bits
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124 } else if (getPos() < fileLen) {
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125 setPos(getPos()); // shift buffer start to pos
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126 return buf[bufPos++] & 0xff; // mask out sign bits
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127 } else if (stream != null && ReadNextStreamChunk() > 0) {
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128 return buf[bufPos++] & 0xff; // mask out sign bits
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129 } else {
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130 return EOF;
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131 }
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132 }
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133
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134 public int Peek() {
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135 int curPos = getPos();
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136 int ch = Read();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
137 setPos(curPos);
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
138 return ch;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
139 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
140
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
141 // beg .. begin, zero-based, inclusive, in byte
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
142 // end .. end, zero-based, exclusive, in byte
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
143 public String GetString(int beg, int end) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
144 int len = 0;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
145 char[] buffer = new char[end - beg];
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
146 int oldPos = getPos();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
147 setPos(beg);
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
148 while (getPos() < end)
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
149 buffer[len++] = (char) Read();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
150 setPos(oldPos);
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
151 return new String(buffer, 0, len);
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
152 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
153
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
154 public int getPos() {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
155 return bufPos + bufStart;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
156 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
157
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
158 public void setPos(int value) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
159 if (value >= fileLen && stream != null) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
160 // Wanted position is after buffer and the stream
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
161 // is not seek-able e.g. network or console,
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
162 // thus we have to read the stream manually till
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
163 // the wanted position is in sight.
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
164 while (value >= fileLen && ReadNextStreamChunk() > 0) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
165 // nothing to do...
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
166 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
167 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
168
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
169 if (value < 0 || value > fileLen) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
170 throw new FatalError("buffer out of bounds access, position: " + value);
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
171 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
172
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
173 if (value >= bufStart && value < bufStart + bufLen) { // already in buffer
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
174 bufPos = value - bufStart;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
175 } else if (file != null) { // must be swapped in
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
176 try {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
177 file.seek(value);
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
178 bufLen = file.read(buf);
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
179 bufStart = value;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
180 bufPos = 0;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
181 } catch (IOException e) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
182 throw new FatalError(e.getMessage());
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
183 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
184 } else {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
185 // set the position to the end of the file, Pos will return fileLen.
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
186 bufPos = fileLen - bufStart;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
187 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
188 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
189
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
190 // Read the next chunk of bytes from the stream, increases the buffer
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
191 // if needed and updates the fields fileLen and bufLen.
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
192 // Returns the number of bytes read.
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
193 private int ReadNextStreamChunk() {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
194 int free = buf.length - bufLen;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
195 if (free == 0) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
196 // in the case of a growing input stream
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
197 // we can neither seek in the stream, nor can we
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
198 // foresee the maximum length, thus we must adapt
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
199 // the buffer size on demand.
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
200 byte[] newBuf = new byte[bufLen * 2];
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
201 System.arraycopy(buf, 0, newBuf, 0, bufLen);
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
202 buf = newBuf;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
203 free = bufLen;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
204 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
205
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
206 int read;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
207 try {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
208 read = stream.read(buf, bufLen, free);
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
209 } catch (IOException ioex) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
210 throw new FatalError(ioex.getMessage());
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
211 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
212
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
213 if (read > 0) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
214 fileLen = bufLen = (bufLen + read);
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
215 return read;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
216 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
217 // end of stream reached
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
218 return 0;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
219 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
220 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
221
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
222 // -----------------------------------------------------------------------------------
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
223 // UTF8Buffer
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
224 // -----------------------------------------------------------------------------------
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
225 class UTF8Buffer extends Buffer {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
226
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
227 UTF8Buffer(Buffer b) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
228 super(b);
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
229 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
230
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
231 @Override
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
232 public int Read() {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
233 int ch;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
234 do {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
235 ch = super.Read();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
236 // until we find a utf8 start (0xxxxxxx or 11xxxxxx)
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
237 } while ((ch >= 128) && ((ch & 0xC0) != 0xC0) && (ch != EOF));
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
238 if (ch < 128 || ch == EOF) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
239 // nothing to do, first 127 chars are the same in ascii and utf8
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
240 // 0xxxxxxx or end of file character
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
241 } else if ((ch & 0xF0) == 0xF0) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
242 // 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
243 int c1 = ch & 0x07;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
244 ch = super.Read();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
245 int c2 = ch & 0x3F;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
246 ch = super.Read();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
247 int c3 = ch & 0x3F;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
248 ch = super.Read();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
249 int c4 = ch & 0x3F;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
250 ch = (((((c1 << 6) | c2) << 6) | c3) << 6) | c4;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
251 } else if ((ch & 0xE0) == 0xE0) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
252 // 1110xxxx 10xxxxxx 10xxxxxx
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
253 int c1 = ch & 0x0F;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
254 ch = super.Read();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
255 int c2 = ch & 0x3F;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
256 ch = super.Read();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
257 int c3 = ch & 0x3F;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
258 ch = (((c1 << 6) | c2) << 6) | c3;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
259 } else if ((ch & 0xC0) == 0xC0) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
260 // 110xxxxx 10xxxxxx
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
261 int c1 = ch & 0x1F;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
262 ch = super.Read();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
263 int c2 = ch & 0x3F;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
264 ch = (c1 << 6) | c2;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
265 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
266 return ch;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
267 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
268 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
269
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
270 // -----------------------------------------------------------------------------------
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
271 // StartStates -- maps characters to start states of tokens
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
272 // -----------------------------------------------------------------------------------
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
273 class StartStates {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
274
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
275 private static class Elem {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
276
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
277 public int key, val;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
278 public Elem next;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
279
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
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280 public Elem(int key, int val) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
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parents:
diff changeset
281 this.key = key;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
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parents:
diff changeset
282 this.val = val;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
283 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
284 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
285
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
286 private Elem[] tab = new Elem[128];
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
287
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
288 public void set(int key, int val) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
289 Elem e = new Elem(key, val);
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
290 int k = key % 128;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
291 e.next = tab[k];
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
292 tab[k] = e;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
293 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
294
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
295 public int state(int key) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
296 Elem e = tab[key % 128];
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
297 while (e != null && e.key != key)
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
298 e = e.next;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
299 return e == null ? 0 : e.val;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
300 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
301 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
302
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
303 // -----------------------------------------------------------------------------------
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
304 // Scanner
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
305 // -----------------------------------------------------------------------------------
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
306 @SuppressWarnings({"rawtypes", "unchecked"})
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
307 public class Scanner {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
308
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
309 static final char EOL = '\n';
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
310 static final int eofSym = 0;
18411
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Andreas Woess <andreas.woess@jku.at>
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diff changeset
311 static final int maxT = 31;
dc2e000bed40 SL: add basic support for creating objects and accessing properties
Andreas Woess <andreas.woess@jku.at>
parents: 16512
diff changeset
312 static final int noSym = 31;
7292
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
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313
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
314
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
315 public Buffer buffer; // scanner buffer
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
316
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
317 Token t; // current token
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
318 int ch; // current input character
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
319 int pos; // byte position of current character
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
320 int charPos; // position by unicode characters starting with 0
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
321 int col; // column number of current character
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
322 int line; // line number of current character
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
323 int oldEols; // EOLs that appeared in a comment;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
324 static final StartStates start; // maps initial token character to start state
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
325 static final Map literals; // maps literal strings to literal kinds
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
326
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
327 Token tokens; // list of tokens already peeked (first token is a dummy)
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
328 Token pt; // current peek token
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
329
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
330 char[] tval = new char[16]; // token text used in NextToken(), dynamically enlarged
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
331 int tlen; // length of current token
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
332
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
333 static {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
334 start = new StartStates();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
335 literals = new HashMap();
12754
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
336 for (int i = 65; i <= 90; ++i) start.set(i, 1);
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
337 for (int i = 97; i <= 122; ++i) start.set(i, 1);
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
338 for (int i = 49; i <= 57; ++i) start.set(i, 4);
18411
dc2e000bed40 SL: add basic support for creating objects and accessing properties
Andreas Woess <andreas.woess@jku.at>
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diff changeset
339 start.set(34, 2);
dc2e000bed40 SL: add basic support for creating objects and accessing properties
Andreas Woess <andreas.woess@jku.at>
parents: 16512
diff changeset
340 start.set(48, 5);
dc2e000bed40 SL: add basic support for creating objects and accessing properties
Andreas Woess <andreas.woess@jku.at>
parents: 16512
diff changeset
341 start.set(40, 6);
dc2e000bed40 SL: add basic support for creating objects and accessing properties
Andreas Woess <andreas.woess@jku.at>
parents: 16512
diff changeset
342 start.set(44, 7);
dc2e000bed40 SL: add basic support for creating objects and accessing properties
Andreas Woess <andreas.woess@jku.at>
parents: 16512
diff changeset
343 start.set(41, 8);
dc2e000bed40 SL: add basic support for creating objects and accessing properties
Andreas Woess <andreas.woess@jku.at>
parents: 16512
diff changeset
344 start.set(123, 9);
dc2e000bed40 SL: add basic support for creating objects and accessing properties
Andreas Woess <andreas.woess@jku.at>
parents: 16512
diff changeset
345 start.set(125, 10);
dc2e000bed40 SL: add basic support for creating objects and accessing properties
Andreas Woess <andreas.woess@jku.at>
parents: 16512
diff changeset
346 start.set(59, 11);
dc2e000bed40 SL: add basic support for creating objects and accessing properties
Andreas Woess <andreas.woess@jku.at>
parents: 16512
diff changeset
347 start.set(124, 12);
dc2e000bed40 SL: add basic support for creating objects and accessing properties
Andreas Woess <andreas.woess@jku.at>
parents: 16512
diff changeset
348 start.set(38, 14);
dc2e000bed40 SL: add basic support for creating objects and accessing properties
Andreas Woess <andreas.woess@jku.at>
parents: 16512
diff changeset
349 start.set(60, 26);
dc2e000bed40 SL: add basic support for creating objects and accessing properties
Andreas Woess <andreas.woess@jku.at>
parents: 16512
diff changeset
350 start.set(62, 27);
dc2e000bed40 SL: add basic support for creating objects and accessing properties
Andreas Woess <andreas.woess@jku.at>
parents: 16512
diff changeset
351 start.set(61, 28);
dc2e000bed40 SL: add basic support for creating objects and accessing properties
Andreas Woess <andreas.woess@jku.at>
parents: 16512
diff changeset
352 start.set(33, 19);
dc2e000bed40 SL: add basic support for creating objects and accessing properties
Andreas Woess <andreas.woess@jku.at>
parents: 16512
diff changeset
353 start.set(43, 21);
dc2e000bed40 SL: add basic support for creating objects and accessing properties
Andreas Woess <andreas.woess@jku.at>
parents: 16512
diff changeset
354 start.set(45, 22);
dc2e000bed40 SL: add basic support for creating objects and accessing properties
Andreas Woess <andreas.woess@jku.at>
parents: 16512
diff changeset
355 start.set(42, 23);
dc2e000bed40 SL: add basic support for creating objects and accessing properties
Andreas Woess <andreas.woess@jku.at>
parents: 16512
diff changeset
356 start.set(47, 24);
dc2e000bed40 SL: add basic support for creating objects and accessing properties
Andreas Woess <andreas.woess@jku.at>
parents: 16512
diff changeset
357 start.set(46, 25);
12754
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
358 start.set(Buffer.EOF, -1);
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
359 literals.put("function", new Integer(4));
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
360 literals.put("break", new Integer(10));
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
361 literals.put("continue", new Integer(12));
13821
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13763
diff changeset
362 literals.put("while", new Integer(13));
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13763
diff changeset
363 literals.put("if", new Integer(14));
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13763
diff changeset
364 literals.put("else", new Integer(15));
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
365 literals.put("return", new Integer(16));
7292
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
366
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
367 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
368
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
369 public Scanner(String fileName) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
370 buffer = new Buffer(fileName);
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
371 Init();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
372 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
373
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
374 public Scanner(InputStream s) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
375 buffer = new Buffer(s);
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
376 Init();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
377 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
378
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
379 void Init() {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
380 pos = -1;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
381 line = 1;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
382 col = 0;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
383 charPos = -1;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
384 oldEols = 0;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
385 NextCh();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
386 if (ch == 0xEF) { // check optional byte order mark for UTF-8
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
387 NextCh();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
388 int ch1 = ch;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
389 NextCh();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
390 int ch2 = ch;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
391 if (ch1 != 0xBB || ch2 != 0xBF) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
392 throw new FatalError("Illegal byte order mark at start of file");
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
393 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
394 buffer = new UTF8Buffer(buffer);
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
395 col = 0;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
396 charPos = -1;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
397 NextCh();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
398 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
399 pt = tokens = new Token(); // first token is a dummy
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
400 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
401
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
402 void NextCh() {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
403 if (oldEols > 0) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
404 ch = EOL;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
405 oldEols--;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
406 } else {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
407 pos = buffer.getPos();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
408 // buffer reads unicode chars, if UTF8 has been detected
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
409 ch = buffer.Read();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
410 col++;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
411 charPos++;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
412 // replace isolated '\r' by '\n' in order to make
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
413 // eol handling uniform across Windows, Unix and Mac
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
414 if (ch == '\r' && buffer.Peek() != '\n')
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
415 ch = EOL;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
416 if (ch == EOL) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
417 line++;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
418 col = 0;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
419 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
420 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
421
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
422 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
423
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
424 void AddCh() {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
425 if (tlen >= tval.length) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
426 char[] newBuf = new char[2 * tval.length];
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
427 System.arraycopy(tval, 0, newBuf, 0, tval.length);
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
428 tval = newBuf;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
429 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
430 if (ch != Buffer.EOF) {
18411
dc2e000bed40 SL: add basic support for creating objects and accessing properties
Andreas Woess <andreas.woess@jku.at>
parents: 16512
diff changeset
431 tval[tlen++] = (char)ch;
7292
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
432
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
433 NextCh();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
434 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
435 }
7517
b6743d7eb8d4 disabled auto-formatting of generated code
Doug Simon <doug.simon@oracle.com>
parents: 7292
diff changeset
436
12754
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
437
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
438 boolean Comment0() {
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
439 int level = 1, pos0 = pos, line0 = line, col0 = col, charPos0 = charPos;
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
440 NextCh();
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
441 if (ch == '/') {
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
442 NextCh();
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
443 for(;;) {
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
444 if (ch == 10) {
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
445 level--;
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
446 if (level == 0) { oldEols = line - line0; NextCh(); return true; }
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
447 NextCh();
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
448 } else if (ch == Buffer.EOF) return false;
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
449 else NextCh();
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
450 }
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
451 } else {
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
452 buffer.setPos(pos0); NextCh(); line = line0; col = col0; charPos = charPos0;
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
453 }
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
454 return false;
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
455 }
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
456
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
457 boolean Comment1() {
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
458 int level = 1, pos0 = pos, line0 = line, col0 = col, charPos0 = charPos;
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
459 NextCh();
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
460 if (ch == '*') {
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
461 NextCh();
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
462 for(;;) {
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
463 if (ch == '*') {
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
464 NextCh();
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
465 if (ch == '/') {
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
466 level--;
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
467 if (level == 0) { oldEols = line - line0; NextCh(); return true; }
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
468 NextCh();
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
469 }
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
470 } else if (ch == Buffer.EOF) return false;
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
471 else NextCh();
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
472 }
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
473 } else {
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
474 buffer.setPos(pos0); NextCh(); line = line0; col = col0; charPos = charPos0;
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
475 }
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
476 return false;
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
477 }
7292
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
478
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
479
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
480 void CheckLiteral() {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
481 String val = t.val;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
482
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
483 Object kind = literals.get(val);
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
484 if (kind != null) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
485 t.kind = ((Integer) kind).intValue();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
486 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
487 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
488
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
489 Token NextToken() {
18411
dc2e000bed40 SL: add basic support for creating objects and accessing properties
Andreas Woess <andreas.woess@jku.at>
parents: 16512
diff changeset
490 while (ch == ' ' ||
7292
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
491 ch >= 9 && ch <= 10 || ch == 13
7848
698cd036a1ca Added a ternary operator to simple language to test short circuit specialization.
Christian Humer <christian.humer@gmail.com>
parents: 7530
diff changeset
492 ) NextCh();
7292
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
493 if (ch == '/' && Comment0() ||ch == '/' && Comment1()) return NextToken();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
494 int recKind = noSym;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
495 int recEnd = pos;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
496 t = new Token();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
497 t.pos = pos;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
498 t.col = col;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
499 t.line = line;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
500 t.charPos = charPos;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
501 int state = start.state(ch);
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
502 tlen = 0;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
503 AddCh();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
504
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
505 loop: for (;;) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
506 switch (state) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
507 case -1: {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
508 t.kind = eofSym;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
509 break loop;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
510 } // NextCh already done
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
511 case 0: {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
512 if (recKind != noSym) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
513 tlen = recEnd - t.pos;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
514 SetScannerBehindT();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
515 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
516 t.kind = recKind;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
517 break loop;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
518 } // NextCh already done
12754
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
519 case 1:
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
520 recEnd = pos; recKind = 1;
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
521 if (ch >= '0' && ch <= '9' || ch >= 'A' && ch <= 'Z' || ch >= 'a' && ch <= 'z') {AddCh(); state = 1; break;}
12754
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
522 else {t.kind = 1; t.val = new String(tval, 0, tlen); CheckLiteral(); return t;}
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
523 case 2:
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
524 if (ch <= 9 || ch >= 11 && ch <= 12 || ch >= 14 && ch <= '!' || ch >= '#' && ch <= '[' || ch >= ']' && ch <= 65535) {AddCh(); state = 2; break;}
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
525 else if (ch == '"') {AddCh(); state = 3; break;}
12754
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
526 else {state = 0; break;}
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
527 case 3:
12754
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
528 {t.kind = 2; break loop;}
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
529 case 4:
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
530 recEnd = pos; recKind = 3;
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
531 if (ch >= '0' && ch <= '9') {AddCh(); state = 4; break;}
12754
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
532 else {t.kind = 3; break loop;}
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
533 case 5:
12754
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
534 {t.kind = 3; break loop;}
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
535 case 6:
12754
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
536 {t.kind = 5; break loop;}
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
537 case 7:
12754
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
538 {t.kind = 6; break loop;}
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
539 case 8:
12754
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
540 {t.kind = 7; break loop;}
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
541 case 9:
12754
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
542 {t.kind = 8; break loop;}
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
543 case 10:
12754
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
544 {t.kind = 9; break loop;}
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
545 case 11:
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
546 {t.kind = 11; break loop;}
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
547 case 12:
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
548 if (ch == '|') {AddCh(); state = 13; break;}
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
549 else {state = 0; break;}
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
550 case 13:
12754
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
551 {t.kind = 17; break loop;}
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
552 case 14:
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
553 if (ch == '&') {AddCh(); state = 15; break;}
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
554 else {state = 0; break;}
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
555 case 15:
12754
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
556 {t.kind = 18; break loop;}
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
557 case 16:
13821
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13763
diff changeset
558 {t.kind = 20; break loop;}
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
559 case 17:
12754
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
560 {t.kind = 22; break loop;}
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
561 case 18:
12754
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
562 {t.kind = 23; break loop;}
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
563 case 19:
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
564 if (ch == '=') {AddCh(); state = 20; break;}
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
565 else {state = 0; break;}
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
566 case 20:
12754
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
567 {t.kind = 24; break loop;}
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
568 case 21:
12754
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
569 {t.kind = 25; break loop;}
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
570 case 22:
12754
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
571 {t.kind = 26; break loop;}
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
572 case 23:
12754
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
573 {t.kind = 27; break loop;}
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
574 case 24:
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
575 {t.kind = 28; break loop;}
12754
7311354f5bf8 SL: fixed eclipse formatter problems.
Christian Humer <christian.humer@gmail.com>
parents: 12752
diff changeset
576 case 25:
18411
dc2e000bed40 SL: add basic support for creating objects and accessing properties
Andreas Woess <andreas.woess@jku.at>
parents: 16512
diff changeset
577 {t.kind = 30; break loop;}
dc2e000bed40 SL: add basic support for creating objects and accessing properties
Andreas Woess <andreas.woess@jku.at>
parents: 16512
diff changeset
578 case 26:
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
579 recEnd = pos; recKind = 19;
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
580 if (ch == '=') {AddCh(); state = 16; break;}
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
581 else {t.kind = 19; break loop;}
18411
dc2e000bed40 SL: add basic support for creating objects and accessing properties
Andreas Woess <andreas.woess@jku.at>
parents: 16512
diff changeset
582 case 27:
13821
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13763
diff changeset
583 recEnd = pos; recKind = 21;
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
584 if (ch == '=') {AddCh(); state = 17; break;}
13821
b16ec83edc73 Documentation and more refactoring of Simple Language
Christian Wimmer <christian.wimmer@oracle.com>
parents: 13763
diff changeset
585 else {t.kind = 21; break loop;}
18411
dc2e000bed40 SL: add basic support for creating objects and accessing properties
Andreas Woess <andreas.woess@jku.at>
parents: 16512
diff changeset
586 case 28:
13761
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
587 recEnd = pos; recKind = 29;
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
588 if (ch == '=') {AddCh(); state = 18; break;}
7c418666c6c9 Refactoring and cleanup of Simple Language (more to come soon)
Christian Wimmer <christian.wimmer@oracle.com>
parents: 12754
diff changeset
589 else {t.kind = 29; break loop;}
7292
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
590
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
591 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
592 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
593 t.val = new String(tval, 0, tlen);
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
594 return t;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
595 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
596
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
597 private void SetScannerBehindT() {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
598 buffer.setPos(t.pos);
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
599 NextCh();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
600 line = t.line;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
601 col = t.col;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
602 charPos = t.charPos;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
603 for (int i = 0; i < tlen; i++)
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
604 NextCh();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
605 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
606
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
607 // get the next token (possibly a token already seen during peeking)
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
608 public Token Scan() {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
609 if (tokens.next == null) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
610 return NextToken();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
611 } else {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
612 pt = tokens = tokens.next;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
613 return tokens;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
614 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
615 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
616
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
617 // get the next token, ignore pragmas
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
618 public Token Peek() {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
619 do {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
620 if (pt.next == null) {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
621 pt.next = NextToken();
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
622 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
623 pt = pt.next;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
624 } while (pt.kind > maxT); // skip pragmas
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
625
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
626 return pt;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
627 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
628
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
629 // make sure that peeking starts at current scan position
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
630 public void ResetPeek() {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
631 pt = tokens;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
632 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
633
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
634 // The following methods are used for the CLNG Editor and will be called with java.Reflection.
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
635 // If the editor won't be used these 3 functions are obsolete,
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
636 // otherwise changes within the signature of the methods will result in Syntax Highlighting not working properly
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
637 // anymore.
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
638
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
639 // get the offset of the next Token
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
640 public int getPeekTokenOffset() {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
641 return pt.pos;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
642 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
643
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
644 // get the String value of the Token
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
645 public String getPeekTokenVal() {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
646 return pt.val;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
647 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
648
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
649 // get the Kind value of the Token
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
650 public int getPeekTokenKind() {
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
651 return pt.kind;
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
652 }
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
653
213c1297a814 Simple Language: A simple dynamic programming language to demonstrate Truffle features
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
654 } // end Scanner