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intl/lib/src/intl/date_format_helpers.dart

Index: intl/lib/src/intl/date_format_helpers.dart
diff --git a/intl/lib/src/intl/date_format_helpers.dart b/intl/lib/src/intl/date_format_helpers.dart
deleted file mode 100644
index 6a6e68c8f46d593a126ee0609672236d30479458..0000000000000000000000000000000000000000
--- a/intl/lib/src/intl/date_format_helpers.dart
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-// Copyright (c) 2012, 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 intl;
-
-/**
- * A class for holding onto the data for a date so that it can be built
- * up incrementally.
- */
-class _DateBuilder {
-  // Default the date values to the EPOCH so that there's a valid date
-  // in case the format doesn't set them.
-  int year = 1970,
-      month = 1,
-      day = 1,
-      hour = 0,
-      minute = 0,
-      second = 0,
-      fractionalSecond = 0;
-  bool pm = false;
-  bool utc = false;
-
-  // Functions that exist just to be closurized so we can pass them to a general
-  // method.
-  void setYear(x) {
-    year = x;
-  }
-  void setMonth(x) {
-    month = x;
-  }
-  void setDay(x) {
-    day = x;
-  }
-  void setHour(x) {
-    hour = x;
-  }
-  void setMinute(x) {
-    minute = x;
-  }
-  void setSecond(x) {
-    second = x;
-  }
-  void setFractionalSecond(x) {
-    fractionalSecond = x;
-  }
-
-  get hour24 => pm ? hour + 12 : hour;
-
-  /**
-   * Verify that we correspond to a valid date. This will reject out of
-   * range values, even if the DateTime constructor would accept them. An
-   * invalid message will result in throwing a [FormatException].
-   */
-  verify(String s) {
-    _verify(month, 1, 12, "month", s);
-    _verify(hour24, 0, 23, "hour", s);
-    _verify(minute, 0, 59, "minute", s);
-    _verify(second, 0, 59, "second", s);
-    _verify(fractionalSecond, 0, 999, "fractional second", s);
-    // Verifying the day is tricky, because it depends on the month. Create
-    // our resulting date and then verify that our values agree with it
-    // as an additional verification. And since we're doing that, also
-    // check the year, which we otherwise can't verify, and the hours,
-    // which will catch cases like "14:00:00 PM".
-    var date = asDate();
-    _verify(hour24, date.hour, date.hour, "hour", s);
-    _verify(day, date.day, date.day, "day", s);
-    _verify(year, date.year, date.year, "year", s);
-  }
-
-  _verify(int value, int min, int max, String desc, String originalInput) {
-    if (value < min || value > max) {
-      throw new FormatException(
-          "Error parsing $originalInput, invalid $desc value: $value");
-    }
-  }
-
-  /**
-   * Return a date built using our values. If no date portion is set,
-   * use the "Epoch" of January 1, 1970.
-   */
-  DateTime asDate({retry: true}) {
-    // TODO(alanknight): Validate the date, especially for things which
-    // can crash the VM, e.g. large month values.
-    var result;
-    if (utc) {
-      result = new DateTime.utc(
-          year, month, day, hour24, minute, second, fractionalSecond);
-    } else {
-      result = new DateTime(
-          year, month, day, hour24, minute, second, fractionalSecond);
-      // TODO(alanknight): Issue 15560 means non-UTC dates occasionally come
-      // out in UTC. If that happens, retry once. This will always happen if
-      // the local time zone is UTC, but that's ok.
-      if (result.toUtc() == result) {
-        result = asDate(retry: false);
-      }
-    }
-    return result;
-  }
-}
-
-/**
- * A simple and not particularly general stream class to make parsing
- * dates from strings simpler. It is general enough to operate on either
- * lists or strings.
- */
-// TODO(alanknight): With the improvements to the collection libraries
-// since this was written we might be able to get rid of it entirely
-// in favor of e.g. aString.split('') giving us an iterable of one-character
-// strings, or else make the implementation trivial. And consider renaming,
-// as _Stream is now just confusing with the system Streams.
-class _Stream {
-  var contents;
-  int index = 0;
-
-  _Stream(this.contents);
-
-  bool atEnd() => index >= contents.length;
-
-  next() => contents[index++];
-
-  /**
-   * Return the next [howMany] items, or as many as there are remaining.
-   * Advance the stream by that many positions.
-   */
-  read([int howMany = 1]) {
-    var result = peek(howMany);
-    index += howMany;
-    return result;
-  }
-
-  /**
-   * Does the input start with the given string, if we start from the
-   * current position.
-   */
-  bool startsWith(String pattern) {
-    if (contents is String) return contents.startsWith(pattern, index);
-    return pattern == peek(pattern.length);
-  }
-
-  /**
-   * Return the next [howMany] items, or as many as there are remaining.
-   * Does not modify the stream position.
-   */
-  peek([int howMany = 1]) {
-    var result;
-    if (contents is String) {
-      result = contents.substring(index, min(index + howMany, contents.length));
-    } else {
-      // Assume List
-      result = contents.sublist(index, index + howMany);
-    }
-    return result;
-  }
-
-  /** Return the remaining contents of the stream */
-  rest() => peek(contents.length - index);
-
-  /**
-   * Find the index of the first element for which [f] returns true.
-   * Advances the stream to that position.
-   */
-  int findIndex(Function f) {
-    while (!atEnd()) {
-      if (f(next())) return index - 1;
-    }
-    return null;
-  }
-
-  /**
-   * Find the indexes of all the elements for which [f] returns true.
-   * Leaves the stream positioned at the end.
-   */
-  List findIndexes(Function f) {
-    var results = [];
-    while (!atEnd()) {
-      if (f(next())) results.add(index - 1);
-    }
-    return results;
-  }
-
-  /**
-   * Assuming that the contents are characters, read as many digits as we
-   * can see and then return the corresponding integer. Advance the stream.
-   */
-  var digitMatcher = new RegExp(r'\d+');
-  int nextInteger() {
-    var string = digitMatcher.stringMatch(rest());
-    if (string == null || string.isEmpty) return null;
-    read(string.length);
-    return int.parse(string);
-  }
-}