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Diffstat (limited to 'tools/droiddoc/src/SourcePositionInfo.java')
-rw-r--r-- | tools/droiddoc/src/SourcePositionInfo.java | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/tools/droiddoc/src/SourcePositionInfo.java b/tools/droiddoc/src/SourcePositionInfo.java new file mode 100644 index 000000000..62448032f --- /dev/null +++ b/tools/droiddoc/src/SourcePositionInfo.java @@ -0,0 +1,94 @@ +/* + * Copyright (C) 2008 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +public class SourcePositionInfo implements Comparable +{ + public SourcePositionInfo() { + this.file = "<unknown>"; + this.line = 0; + this.column = 0; + } + + public SourcePositionInfo(String file, int line, int column) + { + this.file = file; + this.line = line; + this.column = column; + } + + public SourcePositionInfo(SourcePositionInfo that) + { + this.file = that.file; + this.line = that.line; + this.column = that.column; + } + + /** + * Given this position and str which occurs at that position, as well as str an index into str, + * find the SourcePositionInfo. + * + * @throw StringIndexOutOfBoundsException if index > str.length() + */ + public static SourcePositionInfo add(SourcePositionInfo that, String str, int index) + { + if (that == null) { + return null; + } + int line = that.line; + char prev = 0; + for (int i=0; i<index; i++) { + char c = str.charAt(i); + if (c == '\r' || (c == '\n' && prev != '\r')) { + line++; + } + prev = c; + } + return new SourcePositionInfo(that.file, line, 0); + } + + public static SourcePositionInfo findBeginning(SourcePositionInfo that, String str) + { + if (that == null) { + return null; + } + int line = that.line-1; // -1 because, well, it seems to work + int prev = 0; + for (int i=str.length()-1; i>=0; i--) { + char c = str.charAt(i); + if ((c == '\r' && prev != '\n') || (c == '\n')) { + line--; + } + prev = c; + } + return new SourcePositionInfo(that.file, line, 0); + } + + public String toString() + { + return file + ':' + line; + } + + public int compareTo(Object o) { + SourcePositionInfo that = (SourcePositionInfo)o; + int r = this.file.compareTo(that.file); + if (r != 0) return r; + return this.line - that.line; + } + + public String file; + public int line; + public int column; +} |