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Unified Diff: pkg/compiler/lib/src/scanner/keyword.dart

Issue 693183006: Revert "Move dart2js from sdk/lib/_internal/compiler to pkg/compiler" (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Created 6 years, 1 month ago
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Index: pkg/compiler/lib/src/scanner/keyword.dart
diff --git a/pkg/compiler/lib/src/scanner/keyword.dart b/pkg/compiler/lib/src/scanner/keyword.dart
deleted file mode 100644
index 1e01efb608d3ed33649ddfa4674b5417888ca697..0000000000000000000000000000000000000000
--- a/pkg/compiler/lib/src/scanner/keyword.dart
+++ /dev/null
@@ -1,209 +0,0 @@
-// Copyright (c) 2011, 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.
-
-part of scanner;
-
-/**
- * A keyword in the Dart programming language.
- */
-class Keyword {
- static const List<Keyword> values = const <Keyword> [
- const Keyword("assert"),
- const Keyword("break"),
- const Keyword("case"),
- const Keyword("catch"),
- const Keyword("class"),
- const Keyword("const"),
- const Keyword("continue"),
- const Keyword("default"),
- const Keyword("do"),
- const Keyword("else"),
- const Keyword("extends"),
- const Keyword("false"),
- const Keyword("final"),
- const Keyword("finally"),
- const Keyword("for"),
- const Keyword("if"),
- const Keyword("in"),
- const Keyword("new"),
- const Keyword("null"),
- const Keyword("rethrow"),
- const Keyword("return"),
- const Keyword("super"),
- const Keyword("switch"),
- const Keyword("this"),
- const Keyword("throw"),
- const Keyword("true"),
- const Keyword("try"),
- const Keyword("var"),
- const Keyword("void"),
- const Keyword("while"),
- const Keyword("with"),
-
- // TODO(ahe): Don't think this is a reserved word.
- // See: http://dartbug.com/5579
- const Keyword("is", info: IS_INFO),
-
- const Keyword("abstract", isBuiltIn: true),
- const Keyword("as", info: AS_INFO, isBuiltIn: true),
- const Keyword("dynamic", isBuiltIn: true),
- const Keyword("export", isBuiltIn: true),
- const Keyword("external", isBuiltIn: true),
- const Keyword("factory", isBuiltIn: true),
- const Keyword("get", isBuiltIn: true),
- const Keyword("implements", isBuiltIn: true),
- const Keyword("import", isBuiltIn: true),
- const Keyword("library", isBuiltIn: true),
- const Keyword("operator", isBuiltIn: true),
- const Keyword("part", isBuiltIn: true),
- const Keyword("set", isBuiltIn: true),
- const Keyword("static", isBuiltIn: true),
- const Keyword("typedef", isBuiltIn: true),
-
- const Keyword("hide", isPseudo: true),
- const Keyword("native", isPseudo: true),
- const Keyword("of", isPseudo: true),
- const Keyword("on", isPseudo: true),
- const Keyword("show", isPseudo: true),
- const Keyword("source", isPseudo: true),
- const Keyword("deferred", isPseudo: true),
- const Keyword("async", isPseudo: true),
- const Keyword("sync", isPseudo: true),
- const Keyword("await", isPseudo: true),
- const Keyword("yield", isPseudo: true)];
-
- final String syntax;
- final bool isPseudo;
- final bool isBuiltIn;
- final PrecedenceInfo info;
-
- static Map<String, Keyword> _keywords;
- static Map<String, Keyword> get keywords {
- if (_keywords == null) {
- _keywords = computeKeywordMap();
- }
- return _keywords;
- }
-
- const Keyword(this.syntax,
- {this.isPseudo: false,
- this.isBuiltIn: false,
- this.info: KEYWORD_INFO});
-
- static Map<String, Keyword> computeKeywordMap() {
- Map<String, Keyword> result = new Map<String, Keyword>();
- for (Keyword keyword in values) {
- result[keyword.syntax] = keyword;
- }
- return result;
- }
-
- String toString() => syntax;
-}
-
-/**
- * Abstract state in a state machine for scanning keywords.
- */
-abstract class KeywordState {
- KeywordState(this.keyword);
-
- KeywordState next(int c);
- final Keyword keyword;
-
- static KeywordState _KEYWORD_STATE;
- static KeywordState get KEYWORD_STATE {
- if (_KEYWORD_STATE == null) {
- List<String> strings =
- new List<String>(Keyword.values.length);
- for (int i = 0; i < Keyword.values.length; i++) {
- strings[i] = Keyword.values[i].syntax;
- }
- strings.sort((a,b) => a.compareTo(b));
- _KEYWORD_STATE = computeKeywordStateTable(0, strings, 0, strings.length);
- }
- return _KEYWORD_STATE;
- }
-
- static KeywordState computeKeywordStateTable(int start, List<String> strings,
- int offset, int length) {
- List<KeywordState> result = new List<KeywordState>(26);
- assert(length != 0);
- int chunk = 0;
- int chunkStart = -1;
- bool isLeaf = false;
- for (int i = offset; i < offset + length; i++) {
- if (strings[i].length == start) {
- isLeaf = true;
- }
- if (strings[i].length > start) {
- int c = strings[i].codeUnitAt(start);
- if (chunk != c) {
- if (chunkStart != -1) {
- assert(result[chunk - $a] == null);
- result[chunk - $a] = computeKeywordStateTable(start + 1, strings,
- chunkStart,
- i - chunkStart);
- }
- chunkStart = i;
- chunk = c;
- }
- }
- }
- if (chunkStart != -1) {
- assert(result[chunk - $a] == null);
- result[chunk - $a] =
- computeKeywordStateTable(start + 1, strings, chunkStart,
- offset + length - chunkStart);
- } else {
- assert(length == 1);
- return new LeafKeywordState(strings[offset]);
- }
- if (isLeaf) {
- return new ArrayKeywordState(result, strings[offset]);
- } else {
- return new ArrayKeywordState(result, null);
- }
- }
-}
-
-/**
- * A state with multiple outgoing transitions.
- */
-class ArrayKeywordState extends KeywordState {
- final List<KeywordState> table;
-
- ArrayKeywordState(List<KeywordState> this.table, String syntax)
- : super((syntax == null) ? null : Keyword.keywords[syntax]);
-
- KeywordState next(int c) => table[c - $a];
-
- String toString() {
- StringBuffer sb = new StringBuffer();
- sb.write("[");
- if (keyword != null) {
- sb.write("*");
- sb.write(keyword);
- sb.write(" ");
- }
- List<KeywordState> foo = table;
- for (int i = 0; i < foo.length; i++) {
- if (foo[i] != null) {
- sb.write("${new String.fromCharCodes([i + $a])}: ${foo[i]}; ");
- }
- }
- sb.write("]");
- return sb.toString();
- }
-}
-
-/**
- * A state that has no outgoing transitions.
- */
-class LeafKeywordState extends KeywordState {
- LeafKeywordState(String syntax) : super(Keyword.keywords[syntax]);
-
- KeywordState next(int c) => null;
-
- String toString() => keyword.syntax;
-}
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