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Unified Diff: pkg/source_maps/lib/refactor.dart

Issue 814113004: Pull args, intl, logging, shelf, and source_maps out of the SDK. (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Also csslib. Created 6 years ago
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Index: pkg/source_maps/lib/refactor.dart
diff --git a/pkg/source_maps/lib/refactor.dart b/pkg/source_maps/lib/refactor.dart
deleted file mode 100644
index a33b86bec0d39184ba63fa0905c392ab72e00887..0000000000000000000000000000000000000000
--- a/pkg/source_maps/lib/refactor.dart
+++ /dev/null
@@ -1,133 +0,0 @@
-// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-/// Tools to help implement refactoring like transformations to Dart code.
-///
-/// [TextEditTransaction] supports making a series of changes to a text buffer.
-/// [guessIndent] helps to guess the appropriate indentiation for the new code.
-library source_maps.refactor;
-
-import 'package:source_span/source_span.dart';
-
-import 'printer.dart';
-
-/// Editable text transaction.
-///
-/// Applies a series of edits using original location
-/// information, and composes them into the edited string.
-class TextEditTransaction {
- final SourceFile file;
- final String original;
- final _edits = <_TextEdit>[];
-
- /// Creates a new transaction.
- TextEditTransaction(this.original, this.file);
-
- bool get hasEdits => _edits.length > 0;
-
- /// Edit the original text, replacing text on the range [begin] and [end]
- /// with the [replacement]. [replacement] can be either a string or a
- /// [NestedPrinter].
- void edit(int begin, int end, replacement) {
- _edits.add(new _TextEdit(begin, end, replacement));
- }
-
- /// Create a source map [SourceLocation] for [offset].
- SourceLocation _loc(int offset) =>
- file != null ? file.location(offset) : null;
-
- /// Applies all pending [edit]s and returns a [NestedPrinter] containing the
- /// rewritten string and source map information. [filename] is given to the
- /// underlying printer to indicate the name of the generated file that will
- /// contains the source map information.
- ///
- /// Throws [UnsupportedError] if the edits were overlapping. If no edits were
- /// made, the printer simply contains the original string.
- NestedPrinter commit() {
- var printer = new NestedPrinter();
- if (_edits.length == 0) {
- return printer..add(original, location: _loc(0), isOriginal: true);
- }
-
- // Sort edits by start location.
- _edits.sort();
-
- int consumed = 0;
- for (var edit in _edits) {
- if (consumed > edit.begin) {
- var sb = new StringBuffer();
- sb..write(file.location(edit.begin).toolString)
- ..write(': overlapping edits. Insert at offset ')
- ..write(edit.begin)
- ..write(' but have consumed ')
- ..write(consumed)
- ..write(' input characters. List of edits:');
- for (var e in _edits) sb..write('\n ')..write(e);
- throw new UnsupportedError(sb.toString());
- }
-
- // Add characters from the original string between this edit and the last
- // one, if any.
- var betweenEdits = original.substring(consumed, edit.begin);
- printer..add(betweenEdits, location: _loc(consumed), isOriginal: true)
- ..add(edit.replace, location: _loc(edit.begin));
- consumed = edit.end;
- }
-
- // Add any text from the end of the original string that was not replaced.
- printer.add(original.substring(consumed),
- location: _loc(consumed), isOriginal: true);
- return printer;
- }
-}
-
-class _TextEdit implements Comparable<_TextEdit> {
- final int begin;
- final int end;
-
- /// The replacement used by the edit, can be a string or a [NestedPrinter].
- final replace;
-
- _TextEdit(this.begin, this.end, this.replace);
-
- int get length => end - begin;
-
- String toString() => '(Edit @ $begin,$end: "$replace")';
-
- int compareTo(_TextEdit other) {
- int diff = begin - other.begin;
- if (diff != 0) return diff;
- return end - other.end;
- }
-}
-
-/// Returns all whitespace characters at the start of [charOffset]'s line.
-String guessIndent(String code, int charOffset) {
- // Find the beginning of the line
- int lineStart = 0;
- for (int i = charOffset - 1; i >= 0; i--) {
- var c = code.codeUnitAt(i);
- if (c == _LF || c == _CR) {
- lineStart = i + 1;
- break;
- }
- }
-
- // Grab all the whitespace
- int whitespaceEnd = code.length;
- for (int i = lineStart; i < code.length; i++) {
- var c = code.codeUnitAt(i);
- if (c != _SPACE && c != _TAB) {
- whitespaceEnd = i;
- break;
- }
- }
-
- return code.substring(lineStart, whitespaceEnd);
-}
-
-const int _CR = 13;
-const int _LF = 10;
-const int _TAB = 9;
-const int _SPACE = 32;
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