blob: 20eb17ad0ddb3c2e115cf84b12fcb4d2029a3ed9 [file] [log] [blame]
// Copyright (c) 2014, 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.
library source_maps.source_map_span;
import 'package:source_span/source_span.dart';
/// A [SourceSpan] for spans coming from or being written to source maps.
/// These spans have an extra piece of metadata: whether or not they represent
/// an identifier (see [isIdentifier]).
class SourceMapSpan extends SourceSpanBase {
/// Whether this span represents an identifier.
/// If this is `true`, [text] is the value of the identifier.
final bool isIdentifier;
SourceMapSpan(SourceLocation start, SourceLocation end, String text,
{this.isIdentifier: false})
: super(start, end, text);
/// Creates a [SourceMapSpan] for an identifier with value [text] starting at
/// [start].
/// The [end] location is determined by adding [text] to [start].
SourceMapSpan.identifier(SourceLocation start, String text)
: this(
new SourceLocation(start.offset + text.length,
sourceUrl: start.sourceUrl,
line: start.line,
column: start.column + text.length),
isIdentifier: true);
/// A wrapper aruond a [FileSpan] that implements [SourceMapSpan].
class SourceMapFileSpan implements SourceMapSpan, FileSpan {
final FileSpan _inner;
final bool isIdentifier;
SourceFile get file => _inner.file;
FileLocation get start => _inner.start;
FileLocation get end => _inner.end;
String get text => _inner.text;
Uri get sourceUrl => _inner.sourceUrl;
int get length => _inner.length;
SourceMapFileSpan(this._inner, {this.isIdentifier: false});
int compareTo(SourceSpan other) => _inner.compareTo(other);
SourceSpan union(SourceSpan other) => _inner.union(other);
FileSpan expand(FileSpan other) => _inner.expand(other);
String message(String message, {color}) =>
_inner.message(message, color: color);
String toString() => _inner.toString()
.replaceAll("FileSpan", "SourceMapFileSpan");