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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/source/TextMap.java @ 13995:e455fc531ec2

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Truffle: Added API in NodeUtil to count nodes restricted to a Kind. Added API in NodeUtil to print the inlining tree.
author Christian Humer <christian.humer@gmail.com>
date Fri, 21 Feb 2014 02:25:12 +0100
parents 69d2e4baa215
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
13455
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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1 /*
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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4 *
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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5 * This code is free software; you can redistribute it and/or modify it
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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6 * under the terms of the GNU General Public License version 2 only, as
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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7 * published by the Free Software Foundation. Oracle designates this
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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8 * particular file as subject to the "Classpath" exception as provided
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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9 * by Oracle in the LICENSE file that accompanied this code.
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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10 *
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11 * This code is distributed in the hope that it will be useful, but WITHOUT
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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14 * version 2 for more details (a copy is included in the LICENSE file that
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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15 * accompanied this code).
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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16 *
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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17 * You should have received a copy of the GNU General Public License version
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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18 * 2 along with this work; if not, write to the Free Software Foundation,
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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20 *
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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22 * or visit www.oracle.com if you need additional information or have any
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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23 * questions.
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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24 */
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25 package com.oracle.truffle.api.source;
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26
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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27 import java.util.*;
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28
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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29 /**
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30 * A utility for converting between coordinate systems in a string of text interspersed with newline
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31 * characters. The coordinate systems are:
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32 * <ul>
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33 * <li>0-based character offset from the beginning of the text, where newline characters count as a
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34 * single character and the first character in the text occupies position 0.</li>
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35 * <li>1-based position in the 2D space of lines and columns, in which the first position in the
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36 * text is at (1,1).</li>
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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37 * </ul>
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38 * <p>
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39 * This utility is based on positions occupied by characters, not text stream positions as in a text
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40 * editor. The distinction shows up in editors where you can put the cursor just past the last
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41 * character in a buffer; this is necessary, among other reasons, so that you can put the edit
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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42 * cursor in a new (empty) buffer. For the purposes of this utility, however, there are no character
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43 * positions in an empty text string and there are no lines in an empty text string.
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44 * <p>
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45 * A newline character designates the end of a line and occupies a column position.
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46 * <p>
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47 * If the text ends with a character other than a newline, then the characters following the final
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48 * newline character count as a line, even though not newline-terminated.
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49 * <p>
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50 * <strong>Limitations:</strong>
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51 * <ul>
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52 * <li>Does not handle multiple character encodings correctly.</li>
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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53 * <li>Treats tabs as occupying 1 column.</li>
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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54 * <li>Does not handle multiple-character line termination sequences correctly.</li>
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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55 * </ul>
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56 */
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57 public final class TextMap {
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58
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59 // 0-based offsets of newline characters in the text, with sentinel
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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60 private final int[] nlOffsets;
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61
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62 // The number of characters in the text, including newlines (which count as 1).
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63 private final int textLength;
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64
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65 // Is the final text character a newline?
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66 final boolean finalNL;
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67
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68 /**
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69 * Constructs map permitting translation between 0-based character offsets and 1-based
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70 * lines/columns.
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71 */
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72 public TextMap(String text) {
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73 this.textLength = text.length();
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74 final ArrayList<Integer> lines = new ArrayList<>();
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75 lines.add(0);
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76 int offset = 0;
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77
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78 while (offset < text.length()) {
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79 final int nlIndex = text.indexOf('\n', offset);
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80 if (nlIndex >= 0) {
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81 offset = nlIndex + 1;
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82 lines.add(offset);
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83 } else {
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84 break;
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85 }
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86 }
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87 lines.add(Integer.MAX_VALUE);
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88
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89 nlOffsets = new int[lines.size()];
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90 for (int line = 0; line < lines.size(); line++) {
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91 nlOffsets[line] = lines.get(line);
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92 }
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93
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94 finalNL = textLength > 0 && (textLength == nlOffsets[nlOffsets.length - 2]);
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95 }
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96
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97 /**
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98 * Converts 0-based character offset to 1-based number of the line containing the character.
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99 *
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100 * @throws IllegalArgumentException if the offset is outside the string.
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101 */
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102 public int offsetToLine(int offset) throws IllegalArgumentException {
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103 if (offset < 0 || offset >= textLength) {
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104 throw new IllegalArgumentException("offset out of bounds");
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105 }
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106 int line = 1;
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107 while (offset >= nlOffsets[line]) {
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108 line++;
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109 }
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110 return line;
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111 }
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112
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113 /**
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114 * Converts 0-based character offset to 1-based number of the column occupied by the character.
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115 * <p>
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116 * Tabs are not expanded; they occupy 1 column.
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117 *
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118 * @throws IllegalArgumentException if the offset is outside the string.
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119 */
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120 public int offsetToCol(int offset) throws IllegalArgumentException {
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121 return 1 + offset - nlOffsets[offsetToLine(offset) - 1];
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122 }
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123
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124 /**
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125 * The number of lines in the text; if characters appear after the final newline, then they also
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126 * count as a line, even though not newline-terminated.
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127 */
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128 public int lineCount() {
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129 if (textLength == 0) {
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130 return 0;
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131 }
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132 return finalNL ? nlOffsets.length - 2 : nlOffsets.length - 1;
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133 }
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134
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135 /**
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136 * Converts 1-based line number to the 0-based offset of the line's first character; this would
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137 * be the offset of a newline if the line is empty.
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138 *
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139 * @throws IllegalArgumentException if there is no such line in the text.
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140 */
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141 public int lineStartOffset(int line) throws IllegalArgumentException {
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142 if (textLength == 0 || lineOutOfRange(line)) {
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143 throw new IllegalArgumentException("line out of bounds");
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144 }
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145 return nlOffsets[line - 1];
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146 }
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147
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148 /**
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149 * Gets the number of characters in a line, identified by 1-based line number; <em>does not</em>
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150 * include the final newline, if any.
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151 *
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152 * @throws IllegalArgumentException if there is no such line in the text.
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153 */
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154 public int lineLength(int line) throws IllegalArgumentException {
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155 if (textLength == 0 || lineOutOfRange(line)) {
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156 throw new IllegalArgumentException("line out of bounds");
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157 }
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158 if (line == nlOffsets.length - 1 && !finalNL) {
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159 return textLength - nlOffsets[line - 1];
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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160 }
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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161 return (nlOffsets[line] - nlOffsets[line - 1]) - 1;
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
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162
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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163 }
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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164
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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165 /**
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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166 * Is the line number out of range.
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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167 */
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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168 private boolean lineOutOfRange(int line) {
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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169 return line <= 0 || line >= nlOffsets.length || (line == nlOffsets.length - 1 && finalNL);
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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170 }
69d2e4baa215 Truffle: new infrastructure related to instrumentation, and in particular debugging: support for managing Source objects; framework for generalized "instrumentation proxy nodes" (to be inserted into ASTs with no runtime cost when inactive), and "probes" (which can be attached to proxy nodes to receive event notification); a rudimentary interface and abstract implementation for a "debug manager" (mostly a placeholder at this point); and the beginning of a language-agnostic ExecutionContext interface.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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171
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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172 }