Generated scanner and parser tests.

pkg/analyzer-experimental/test/generated/test_support.dart

+// This code was auto-generated, is not intended to be edited, and is subject to
+// significant change. Please see the README file for more information.
+
+library engine.test_support;
+
+import 'dart:collection';
+import 'package:analyzer-experimental/src/generated/java_core.dart';
+import 'package:analyzer-experimental/src/generated/java_engine.dart';
+import 'package:analyzer-experimental/src/generated/java_junit.dart';
+import 'package:analyzer-experimental/src/generated/source.dart';
+import 'package:analyzer-experimental/src/generated/error.dart';
+import 'package:analyzer-experimental/src/generated/scanner.dart';
+import 'package:unittest/unittest.dart' as _ut;
+
+/**
+ * Instances of the class {@code GatheringErrorListener} implement an error listener that collects
+ * all of the errors passed to it for later examination.
+ */
+class GatheringErrorListener implements AnalysisErrorListener {
+  /**
+   * The source being parsed.
+   */
+  String _rawSource;
+  /**
+   * The source being parsed after inserting a marker at the beginning and end of the range of the
+   * most recent error.
+   */
+  String _markedSource;
+  /**
+   * A list containing the errors that were collected.
+   */
+  List<AnalysisError> _errors = new List<AnalysisError>();
+  /**
+   * A table mapping sources to the line information for the source.
+   */
+  Map<Source, LineInfo> _lineInfoMap = new Map<Source, LineInfo>();
+  /**
+   * An empty array of errors used when no errors are expected.
+   */
+  static List<AnalysisError> _NO_ERRORS = new List<AnalysisError>.fixedLength(0);
+  /**
+   * Initialize a newly created error listener to collect errors.
+   */
+  GatheringErrorListener() : super() {
+    _jtd_constructor_234_impl();
+  }
+  _jtd_constructor_234_impl() {
+  }
+  /**
+   * Initialize a newly created error listener to collect errors.
+   */
+  GatheringErrorListener.con1(String rawSource) {
+    _jtd_constructor_235_impl(rawSource);
+  }
+  _jtd_constructor_235_impl(String rawSource) {
+    this._rawSource = rawSource;
+    this._markedSource = rawSource;
+  }
+  /**
+   * Assert that the number of errors that have been gathered matches the number of errors that are
+   * given and that they have the expected error codes and locations. The order in which the errors
+   * were gathered is ignored.
+   * @param errorCodes the errors that should have been gathered
+   * @throws AssertionFailedError if a different number of errors have been gathered than were
+   * expected or if they do not have the same codes and locations
+   */
+  void assertErrors(List<AnalysisError> expectedErrors) {
+    if (_errors.length != expectedErrors.length) {
+      fail(expectedErrors);
+    }
+    List<AnalysisError> remainingErrors = new List<AnalysisError>();
+    for (AnalysisError error in expectedErrors) {
+      remainingErrors.add(error);
+    }
+    for (AnalysisError error in _errors) {
+      if (!foundAndRemoved(remainingErrors, error)) {
+        fail(expectedErrors);
+      }
+    }
+  }
+  /**
+   * Assert that the number of errors that have been gathered matches the number of errors that are
+   * given and that they have the expected error codes. The order in which the errors were gathered
+   * is ignored.
+   * @param expectedErrorCodes the error codes of the errors that should have been gathered
+   * @throws AssertionFailedError if a different number of errors have been gathered than were
+   * expected
+   */
+  void assertErrors2(List<ErrorCode> expectedErrorCodes) {
+    StringBuffer builder = new StringBuffer();
+    Map<ErrorCode, int> expectedCounts = new Map<ErrorCode, int>();
+    for (ErrorCode code in expectedErrorCodes) {
+      int count = expectedCounts[code];
+      if (count == null) {
+        count = 1;
+      } else {
+        count = count + 1;
+      }
+      expectedCounts[code] = count;
+    }
+    Map<ErrorCode, List<AnalysisError>> errorsByCode = new Map<ErrorCode, List<AnalysisError>>();
+    for (AnalysisError error in _errors) {
+      ErrorCode code = error.errorCode;
+      List<AnalysisError> list = errorsByCode[code];
+      if (list == null) {
+        list = new List<AnalysisError>();
+        errorsByCode[code] = list;
+      }
+      list.add(error);
+    }
+    for (MapEntry<ErrorCode, int> entry in getMapEntrySet(expectedCounts)) {
+      ErrorCode code = entry.getKey();
+      int expectedCount = entry.getValue();
+      int actualCount;
+      List<AnalysisError> list = errorsByCode.remove(code);
+      if (list == null) {
+        actualCount = 0;
+      } else {
+        actualCount = list.length;
+      }
+      if (actualCount != expectedCount) {
+        if (builder.length == 0) {
+          builder.add("Expected ");
+        } else {
+          builder.add("; ");
+        }
+        builder.add(expectedCount);
+        builder.add(" errors of type ");
+        builder.add(code);
+        builder.add(", found ");
+        builder.add(actualCount);
+      }
+    }
+    for (MapEntry<ErrorCode, List<AnalysisError>> entry in getMapEntrySet(errorsByCode)) {
+      ErrorCode code = entry.getKey();
+      List<AnalysisError> actualErrors = entry.getValue();
+      int actualCount = actualErrors.length;
+      if (builder.length == 0) {
+        builder.add("Expected ");
+      } else {
+        builder.add("; ");
+      }
+      builder.add("0 errors of type ");
+      builder.add(code);
+      builder.add(", found ");
+      builder.add(actualCount);
+      builder.add(" (");
+      for (int i = 0; i < actualErrors.length; i++) {
+        AnalysisError error = actualErrors[i];
+        if (i > 0) {
+          builder.add(", ");
+        }
+        builder.add(error.offset);
+      }
+      builder.add(")");
+    }
+    if (builder.length > 0) {
+      JUnitTestCase.fail(builder.toString());
+    }
+  }
+  /**
+   * Assert that the number of errors that have been gathered matches the number of severities that
+   * are given and that there are the same number of errors and warnings as specified by the
+   * argument. The order in which the errors were gathered is ignored.
+   * @param expectedSeverities the severities of the errors that should have been gathered
+   * @throws AssertionFailedError if a different number of errors have been gathered than were
+   * expected
+   */
+  void assertErrors3(List<ErrorSeverity> expectedSeverities) {
+    int expectedErrorCount = 0;
+    int expectedWarningCount = 0;
+    for (ErrorSeverity severity in expectedSeverities) {
+      if (severity == ErrorSeverity.ERROR) {
+        expectedErrorCount++;
+      } else {
+        expectedWarningCount++;
+      }
+    }
+    int actualErrorCount = 0;
+    int actualWarningCount = 0;
+    for (AnalysisError error in _errors) {
+      if (error.errorCode.errorSeverity == ErrorSeverity.ERROR) {
+        actualErrorCount++;
+      } else {
+        actualWarningCount++;
+      }
+    }
+    if (expectedErrorCount != actualErrorCount || expectedWarningCount != actualWarningCount) {
+      JUnitTestCase.fail("Expected ${expectedErrorCount} errors and ${expectedWarningCount} warnings, found ${actualErrorCount} errors and ${actualWarningCount} warnings");
+    }
+  }
+  /**
+   * Assert that no errors have been gathered.
+   * @throws AssertionFailedError if any errors have been gathered
+   */
+  void assertNoErrors() {
+    assertErrors(GatheringErrorListener._NO_ERRORS);
+  }
+  /**
+   * Return the errors that were collected.
+   * @return the errors that were collected
+   */
+  List<AnalysisError> get errors => _errors;
+  /**
+   * Return {@code true} if an error with the given error code has been gathered.
+   * @param errorCode the error code being searched for
+   * @return {@code true} if an error with the given error code has been gathered
+   */
+  bool hasError(ErrorCode errorCode) {
+    for (AnalysisError error in _errors) {
+      if (error.errorCode == errorCode) {
+        return true;
+      }
+    }
+    return false;
+  }
+  void onError(AnalysisError error) {
+    if (_rawSource != null) {
+      int left = error.offset;
+      int right = left + error.length - 1;
+      _markedSource = "${_rawSource.substring(0, left)}^${_rawSource.substring(left, right)}^${_rawSource.substring(right)}";
+    }
+    _errors.add(error);
+  }
+  /**
+   * Set the line information associated with the given source to the given information.
+   * @param source the source with which the line information is associated
+   * @param lineStarts the line start information to be associated with the source
+   */
+  void setLineInfo(Source source, List<int> lineStarts) {
+    _lineInfoMap[source] = new LineInfo(lineStarts);
+  }
+  /**
+   * Set the line information associated with the given source to the given information.
+   * @param source the source with which the line information is associated
+   * @param lineInfo the line information to be associated with the source
+   */
+  void setLineInfo2(Source source, LineInfo lineInfo) {
+    _lineInfoMap[source] = lineInfo;
+  }
+  /**
+   * Return {@code true} if the two errors are equivalent.
+   * @param firstError the first error being compared
+   * @param secondError the second error being compared
+   * @return {@code true} if the two errors are equivalent
+   */
+  bool equals(AnalysisError firstError, AnalysisError secondError) => firstError.errorCode == secondError.errorCode && firstError.offset == secondError.offset && firstError.length == secondError.length && equals3(firstError.source, secondError.source);
+  /**
+   * Return {@code true} if the two sources are equivalent.
+   * @param firstSource the first source being compared
+   * @param secondSource the second source being compared
+   * @return {@code true} if the two sources are equivalent
+   */
+  bool equals3(Source firstSource, Source secondSource) {
+    if (firstSource == null) {
+      return secondSource == null;
+    } else if (secondSource == null) {
+      return false;
+    }
+    return firstSource == secondSource;
+  }
+  /**
+   * Assert that the number of errors that have been gathered matches the number of errors that are
+   * given and that they have the expected error codes. The order in which the errors were gathered
+   * is ignored.
+   * @param errorCodes the errors that should have been gathered
+   * @throws AssertionFailedError with
+   */
+  void fail(List<AnalysisError> expectedErrors) {
+    PrintStringWriter writer = new PrintStringWriter();
+    writer.print("Expected ");
+    writer.print(expectedErrors.length);
+    writer.print(" errors:");
+    for (AnalysisError error in expectedErrors) {
+      Source source5 = error.source;
+      LineInfo lineInfo = _lineInfoMap[source5];
+      writer.println();
+      if (lineInfo == null) {
+        int offset8 = error.offset;
+        writer.printf("  %s %s (%d..%d)", [source5 == null ? "" : source5.shortName, error.errorCode, offset8, offset8 + error.length]);
+      } else {
+        LineInfo_Location location = lineInfo.getLocation(error.offset);
+        writer.printf("  %s %s (%d, %d/%d)", [source5 == null ? "" : source5.shortName, error.errorCode, location.lineNumber, location.columnNumber, error.length]);
+      }
+    }
+    writer.println();
+    writer.print("found ");
+    writer.print(_errors.length);
+    writer.print(" errors:");
+    for (AnalysisError error in _errors) {
+      Source source6 = error.source;
+      LineInfo lineInfo = _lineInfoMap[source6];
+      writer.println();
+      if (lineInfo == null) {
+        int offset9 = error.offset;
+        writer.printf("  %s %s (%d..%d): %s", [source6 == null ? "" : source6.shortName, error.errorCode, offset9, offset9 + error.length, error.message]);
+      } else {
+        LineInfo_Location location = lineInfo.getLocation(error.offset);
+        writer.printf("  %s %s (%d, %d/%d): %s", [source6 == null ? "" : source6.shortName, error.errorCode, location.lineNumber, location.columnNumber, error.length, error.message]);
+      }
+    }
+    JUnitTestCase.fail(writer.toString());
+  }
+  /**
+   * Search through the given list of errors for an error that is equal to the target error. If one
+   * is found, remove it from the list and return {@code true}, otherwise return {@code false}without modifying the list.
+   * @param errors the errors through which we are searching
+   * @param targetError the error being searched for
+   * @return {@code true} if the error is found and removed from the list
+   */
+  bool foundAndRemoved(List<AnalysisError> errors, AnalysisError targetError) {
+    for (AnalysisError error in errors) {
+      if (equals(error, targetError)) {
+        errors.remove(error);
+        return true;
+      }
+    }
+    return true;
+  }
+}
+/**
+ * The class {@code EngineTestCase} defines utility methods for making assertions.
+ */
+class EngineTestCase extends JUnitTestCase {
+  static int _PRINT_RANGE = 6;
+  /**
+   * Assert that the tokens in the actual stream of tokens have the same types and lexemes as the
+   * tokens in the expected stream of tokens. Note that this does not assert anything about the
+   * offsets of the tokens (although the lengths will be equal).
+   * @param expectedStream the head of the stream of tokens that were expected
+   * @param actualStream the head of the stream of tokens that were actually found
+   * @throws AssertionFailedError if the two streams of tokens are not the same
+   */
+  static void assertAllMatch(Token expectedStream, Token actualStream) {
+    Token left = expectedStream;
+    Token right = actualStream;
+    while (left.type != TokenType.EOF && right.type != TokenType.EOF) {
+      assertMatches(left, right);
+      left = left.next;
+      right = right.next;
+    }
+  }
+  /**
+   * Assert that the array of actual values contain exactly the same values as those in the array of
+   * expected value, with the exception that the order of the elements is not required to be the
+   * same.
+   * @param expectedValues the values that are expected to be found
+   * @param actualValues the actual values that are being compared against the expected values
+   */
+  static void assertEqualsIgnoreOrder(List<Object> expectedValues, List<Object> actualValues) {
+    JUnitTestCase.assertNotNull(actualValues);
+    int expectedLength = expectedValues.length;
+    JUnitTestCase.assertEquals(expectedLength, actualValues.length);
+    List<bool> found = new List<bool>.fixedLength(expectedLength);
+    for (int i = 0; i < expectedLength; i++) {
+      found[i] = false;
+    }
+    for (Object actualValue in actualValues) {
+      bool wasExpected = false;
+      for (int i = 0; i < expectedLength; i++) {
+        if (!found[i] && expectedValues[i] == actualValue) {
+          found[i] = true;
+          wasExpected = true;
+          break;
+        }
+      }
+      if (!wasExpected) {
+        JUnitTestCase.fail("The actual value ${actualValue} was not expected");
+      }
+    }
+  }
+  /**
+   * Assert that a given String is equal to an expected value.
+   * @param expected the expected String value
+   * @param actual the actual String value
+   */
+  static void assertEqualString(String expected, String actual) {
+    if (actual == null || expected == null) {
+      if (actual == expected) {
+        return;
+      }
+      if (actual == null) {
+        JUnitTestCase.assertTrueMsg("Content not as expected: is 'null' expected: ${expected}", false);
+      } else {
+        JUnitTestCase.assertTrueMsg("Content not as expected: expected 'null' is: ${actual}", false);
+      }
+    }
+    int diffPos = getDiffPos(expected, actual);
+    if (diffPos != -1) {
+      int diffAhead = Math.max(0, diffPos - EngineTestCase._PRINT_RANGE);
+      int diffAfter = Math.min(actual.length, diffPos + EngineTestCase._PRINT_RANGE);
+      String diffStr = "${actual.substring(diffAhead, diffPos)}^${actual.substring(diffPos, diffAfter)}";
+      String message = "Content not as expected: is\n${actual}\nDiffers at pos ${diffPos}: ${diffStr}\nexpected:\n${expected}";
+      JUnitTestCase.assertEqualsMsg(message, expected, actual);
+    }
+  }
+  /**
+   * Assert that the given list is non-{@code null} and has exactly expected elements.
+   * @param list the list being tested
+   * @param expectedElements the expected elements
+   * @throws AssertionFailedError if the list is {@code null} or does not have the expected elements
+   */
+  static void assertExactElements(List<Object> list, List<Object> expectedElements) {
+    int expectedSize = expectedElements.length;
+    if (list == null) {
+      JUnitTestCase.fail("Expected list of size ${expectedSize}; found null");
+    }
+    if (list.length != expectedSize) {
+      JUnitTestCase.fail("Expected list of size ${expectedSize}; contained ${list.length} elements");
+    }
+    for (int i = 0; i < expectedElements.length; i++) {
+      Object element = list[i];
+      Object expectedElement = expectedElements[i];
+      if (!element == expectedElement) {
+        JUnitTestCase.fail("Expected ${expectedElement} at [${i}]; found ${element}");
+      }
+    }
+  }
+  /**
+   * Assert that the given array is non-{@code null} and has exactly expected elements.
+   * @param array the array being tested
+   * @param expectedElements the expected elements
+   * @throws AssertionFailedError if the array is {@code null} or does not have the expected
+   * elements
+   */
+  static void assertExactElements2(List<Object> array, List<Object> expectedElements) {
+    int expectedSize = expectedElements.length;
+    if (array == null) {
+      JUnitTestCase.fail("Expected array of size ${expectedSize}; found null");
+    }
+    if (array.length != expectedSize) {
+      JUnitTestCase.fail("Expected array of size ${expectedSize}; contained ${array.length} elements");
+    }
+    for (int i = 0; i < expectedElements.length; i++) {
+      Object element = array[0];
+      Object expectedElement = expectedElements[i];
+      if (!element == expectedElement) {
+        JUnitTestCase.fail("Expected ${expectedElement} at [${i}]; found ${element}");
+      }
+    }
+  }
+  /**
+   * Assert that the given list is non-{@code null} and has exactly expected elements.
+   * @param set the list being tested
+   * @param expectedElements the expected elements
+   * @throws AssertionFailedError if the list is {@code null} or does not have the expected elements
+   */
+  static void assertExactElements3(Set<Object> set, List<Object> expectedElements) {
+    int expectedSize = expectedElements.length;
+    if (set == null) {
+      JUnitTestCase.fail("Expected list of size ${expectedSize}; found null");
+    }
+    if (set.length != expectedSize) {
+      JUnitTestCase.fail("Expected list of size ${expectedSize}; contained ${set.length} elements");
+    }
+    for (int i = 0; i < expectedElements.length; i++) {
+      Object expectedElement = expectedElements[i];
+      if (!set.contains(expectedElement)) {
+        JUnitTestCase.fail("Expected ${expectedElement} in set${set}");
+      }
+    }
+  }
+  /**
+   * Assert that the given object is an instance of the expected class.
+   * @param expectedClass the class that the object is expected to be an instance of
+   * @param object the object being tested
+   * @return the object that was being tested
+   * @throws Exception if the object is not an instance of the expected class
+   */
+  static Object assertInstanceOf(Type expectedClass, Object object) {
+    if (!isInstanceOf(object, expectedClass)) {
+      JUnitTestCase.fail("Expected instance of ${expectedClass.toString()}, found ${(object == null ? "null" : object.runtimeType.toString())}");
+    }
+    return object as Object;
+  }
+  /**
+   * Assert that the given array is non-{@code null} and has the expected number of elements.
+   * @param expectedLength the expected number of elements
+   * @param array the array being tested
+   * @throws AssertionFailedError if the array is {@code null} or does not have the expected number
+   * of elements
+   */
+  static void assertLength(int expectedLength, List<Object> array) {
+    if (array == null) {
+      JUnitTestCase.fail("Expected array of length ${expectedLength}; found null");
+    } else if (array.length != expectedLength) {
+      JUnitTestCase.fail("Expected array of length ${expectedLength}; contained ${array.length} elements");
+    }
+  }
+  /**
+   * Assert that the actual token has the same type and lexeme as the expected token. Note that this
+   * does not assert anything about the offsets of the tokens (although the lengths will be equal).
+   * @param expectedToken the token that was expected
+   * @param actualToken the token that was found
+   * @throws AssertionFailedError if the two tokens are not the same
+   */
+  static void assertMatches(Token expectedToken, Token actualToken) {
+    JUnitTestCase.assertEquals(expectedToken.type, actualToken.type);
+    if (expectedToken is KeywordToken) {
+      assertInstanceOf(KeywordToken, actualToken);
+      JUnitTestCase.assertEquals((expectedToken as KeywordToken).keyword, (actualToken as KeywordToken).keyword);
+    } else if (expectedToken is StringToken) {
+      assertInstanceOf(StringToken, actualToken);
+      JUnitTestCase.assertEquals((expectedToken as StringToken).lexeme, (actualToken as StringToken).lexeme);
+    }
+  }
+  /**
+   * Assert that the given list is non-{@code null} and has the expected number of elements.
+   * @param expectedSize the expected number of elements
+   * @param list the list being tested
+   * @throws AssertionFailedError if the list is {@code null} or does not have the expected number
+   * of elements
+   */
+  static void assertSize(int expectedSize, List<Object> list) {
+    if (list == null) {
+      JUnitTestCase.fail("Expected list of size ${expectedSize}; found null");
+    } else if (list.length != expectedSize) {
+      JUnitTestCase.fail("Expected list of size ${expectedSize}; contained ${list.length} elements");
+    }
+  }
+  /**
+   * Assert that the given map is non-{@code null} and has the expected number of elements.
+   * @param expectedSize the expected number of elements
+   * @param map the map being tested
+   * @throws AssertionFailedError if the map is {@code null} or does not have the expected number of
+   * elements
+   */
+  static void assertSize2(int expectedSize, Map<Object, Object> map) {
+    if (map == null) {
+      JUnitTestCase.fail("Expected map of size ${expectedSize}; found null");
+    } else if (map.length != expectedSize) {
+      JUnitTestCase.fail("Expected map of size ${expectedSize}; contained ${map.length} elements");
+    }
+  }
+  /**
+   * Convert the given array of lines into a single source string.
+   * @param lines the lines to be merged into a single source string
+   * @return the source string composed of the given lines
+   */
+  static String createSource(List<String> lines) {
+    PrintStringWriter writer = new PrintStringWriter();
+    for (String line in lines) {
+      writer.printlnObject(line);
+    }
+    return writer.toString();
+  }
+  /**
+   * Calculate the offset where the given strings differ.
+   * @param str1 the first String to compare
+   * @param str2 the second String to compare
+   * @return the offset at which the strings differ (or <code>-1</code> if they do not)
+   */
+  static int getDiffPos(String str1, String str2) {
+    int len1 = Math.min(str1.length, str2.length);
+    int diffPos = -1;
+    for (int i = 0; i < len1; i++) {
+      if (str1.charCodeAt(i) != str2.charCodeAt(i)) {
+        diffPos = i;
+        break;
+      }
+    }
+    if (diffPos == -1 && str1.length != str2.length) {
+      diffPos = len1;
+    }
+    return diffPos;
+  }
+  static dartSuite() {
+    _ut.group('EngineTestCase', () {
+    });
+  }
+}
+main() {
+}
+
+class TestSource implements Source {
+  bool operator ==(Object object) {
+    return this == object;
+  }
+  void getContents(Source_ContentReceiver receiver) {
+    throw new UnsupportedOperationException();
+  }
+  String get fullName {
+    throw new UnsupportedOperationException();
+  }
+  String get shortName {
+    throw new UnsupportedOperationException();
+  }
+  bool isInSystemLibrary() {
+    throw new UnsupportedOperationException();
+  }
+  Source resolve(String uri) {
+    throw new UnsupportedOperationException();
+  }
+}
+
+/**
+ * Wrapper around [Function] which should be called with [target] and [arguments].
+ */
+class MethodTrampoline {
+  int parameterCount;
+  Function trampoline;
+  MethodTrampoline(this.parameterCount, this.trampoline);
+  Object invoke(target, List arguments) {
+    if (arguments.length != parameterCount) {
+      throw new IllegalArgumentException("${arguments.length} != $parameterCount");
+    }
+    switch (parameterCount) {
+      case 0:
+        return trampoline(target);
+      case 1:
+        return trampoline(target, arguments[0]);
+      case 2:
+        return trampoline(target, arguments[0], arguments[1]);
+      case 3:
+        return trampoline(target, arguments[0], arguments[1], arguments[2]);
+      case 4:
+        return trampoline(target, arguments[0], arguments[1], arguments[2], arguments[3]);
+      default:
+        throw new IllegalArgumentException("Not implemented for > 4 arguments");
+    }
+  }
+}