Removes dartc reliance on its own libraries, now can be targeted at any implementation's libraries

compiler/lib/implementation/string.dart

-// 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.
-
-class StringImplementation implements String native "String" {
-  factory StringImplementation.fromValues(List<int> values) {
-    return _newFromValues(values);
-  }
-
-  String operator[](int index) {
-    if (0 <= index && index < length) {
-      return _indexOperator(index);
-    }
-    throw new IndexOutOfRangeException(index);
-  }
-
-  int charCodeAt(int index) {
-    if (0 <= index && index < length) {
-      return _charCodeAt(index);
-    }
-    throw new IndexOutOfRangeException(index);
-  }
-
-  int get length() native;
-
-  bool operator ==(var other) native;
-
-  bool substringMatches(int start, String other) {
-    int len = length;
-    int otherLen = other.length;
-    if (otherLen == 0) return true;
-    if ((start < 0) || (start >= len)) return false;
-    if (start + otherLen > len) return false;
-    StringImplementation otherImpl = other;
-    for (int i = 0; i < otherLen; i++) {
-      // We can use the unsafe _charCodeAt.
-      if (_charCodeAt(start + i) != otherImpl._charCodeAt(i)) return false;
-    }
-    return true;
-  }
-
-  bool endsWith(String other) {
-    return substringMatches(length - other.length, other);
-  }
-
-  bool startsWith(String other) {
-    return substringMatches(0, other);
-  }
-
-  int indexOf(String other, [int start = 0]) {
-    return _nativeIndexOf(other, start);
-  }
-
-  int lastIndexOf(String other, [int start = null]) {
-    if (start === null) start = length - 1;
-    return _nativeLastIndexOf(other, start);
-  }
-
-  int _nativeIndexOf(String other, int start) native;
-  int _nativeLastIndexOf(String other, int start) native;
-
-  bool isEmpty() {
-    return length == 0;
-  }
-
-  String concat(String other) native;
-
-  String operator +(Object obj) {
-    return this.concat(obj.toString());
-  }
-
-  String substring(int startIndex, [int endIndex = null]) {
-    if (endIndex == null) endIndex = this.length;
-
-    if ((startIndex < 0) || (startIndex > this.length)) {
-      throw new IndexOutOfRangeException(startIndex);
-    }
-    if ((endIndex < 0) || (endIndex > this.length)) {
-      throw new IndexOutOfRangeException(endIndex);
-    }
-    if (startIndex > endIndex) {
-      throw new IndexOutOfRangeException(startIndex);
-    }
-    return _substringUnchecked(startIndex, endIndex);
-  }
-
-  String trim() native;
-
-  bool contains(Pattern pattern, [int startIndex = 0]) {
-    if (startIndex < 0 || startIndex > length) {
-      throw new IndexOutOfRangeException(startIndex);
-    }
-    if (pattern is String) {
-      return this.indexOf(pattern, startIndex) != -1;
-    } else if (pattern is JSSyntaxRegExp) {
-      JSSyntaxRegExp regExp = pattern;
-      return regExp.hasMatch(_substringUnchecked(startIndex, length));
-    } else {
-      String substr = _substringUnchecked(startIndex, length);
-      return !pattern.allMatches(substr).iterator().hasNext();
-    }
-  }
-
-  String replaceFirst(Pattern from, String to) {
-    if (from is String || from is JSSyntaxRegExp) {
-      return _replace(from, to);
-    } else {
-      // TODO(floitsch): implement generic String.replace (with patterns).
-      throw "StringImplementation.replace(Pattern) UNIMPLEMENTED";
-    }
-  }
-
-  String replaceAll(Pattern from, String to) {
-    if (from is String) {
-      if (from == "") {
-        if (this == "") {
-          return to;
-        } else {
-          StringBuffer result = new StringBuffer();
-          int len = length;
-          result.add(to);
-          for (int i = 0; i < len; i++) {
-            result.add(this[i]);
-            result.add(to);
-          }
-          return result.toString();
-        }
-      } else {
-        return _replaceAll(from, to);
-      }
-    } else if (from is JSSyntaxRegExp) {
-      return _replaceAll(from, to);
-    } else {
-      // TODO(floitsch): implement generic String.replace (with patterns).
-      throw "StringImplementation.replaceAll(Pattern) UNIMPLEMENTED";
-    }
-  }
-
-  List<String> split(Pattern pattern) {
-    if (pattern is String || pattern is JSSyntaxRegExp) {
-      return _split(pattern);
-    } else {
-      throw "StringImplementation.split(Pattern) UNIMPLEMENTED";
-    }
-  }
-
-  Iterable<Match> allMatches(String str) {
-    List<Match> result = [];
-    if (this.isEmpty()) return result;
-    int length = this.length;
-
-    int ix = 0;
-    while (ix < str.length) {
-      int foundIx = str.indexOf(this, ix);
-      if (foundIx < 0) break;
-      // Call "toString" to coerce the "this" back to a primitive string.
-      result.add(new _StringMatch(foundIx, str, this.toString()));
-      ix = foundIx + length;
-    }
-    return result;
-  }
-
-  List<String> splitChars() {
-    return _split("");
-  }
-
-  List<int> charCodes() {
-    int len = length;
-    List<int> result = new List<int>(len);
-    for (int i = 0; i < len; i++) {
-      // It is safe to call the private function (which doesn't do
-      // range-checks).
-      result[i] = _charCodeAt(i);
-    }
-    return result;
-  }
-
-  String toLowerCase() native;
-  String toUpperCase() native;
-
-  int hashCode() native;
-
-  // Note: we can't just return 'this', because we want the primitive string
-  // and not the wrapped String object.
-  String toString() native;
-
-  int compareTo(String other) native;
-
-  static String _newFromValues(List<int> values) native;
-  String _indexOperator(int index) native;
-  int _charCodeAt(int index) native;
-  String _substringUnchecked(int startIndex, int endIndex) native;
-  String _replace(Pattern from, String to) native;
-  String _replaceAll(Pattern from, String to) native;
-  List<String> _split(Pattern pattern) native;
-
-  get dynamic() { return toString(); }
-}
-
-class _StringJsUtil {
-  static String toDartString(o) native {
-    if (o === null) return "null";
-    return o.toString();
-  }
-}
-
-class _StringMatch implements Match {
-  const _StringMatch(int this._start,
-                     String this.str,
-                     String this.pattern);
-
-  int start() => _start;
-  int end() => _start + pattern.length;
-  String operator[](int g) => group(g);
-  int groupCount() => 0;
-
-  String group(int group_) {
-    if (group_ != 0) {
-      throw new IndexOutOfRangeException(group_);
-    }
-    return pattern;
-  }
-
-  List<String> groups(List<int> groups_) {
-    List<String> result = new List<String>();
-    for (int g in groups_) {
-      result.add(group(g));
-    }
-    return result;
-  }
-
-  final int _start;
-  final String str;
-  final String pattern;
-}