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

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;
+}