Copy scanner and parser to own packages.

pkg/dart_scanner/lib/src/precedence.dart

Index: pkg/dart_scanner/lib/src/precedence.dart
diff --git a/pkg/dart_scanner/lib/src/precedence.dart b/pkg/dart_scanner/lib/src/precedence.dart
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+// Copyright (c) 2015, 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.
+
+library dart2js.tokens.precedence.constants;
+
+import 'precedence.dart' show PrecedenceInfo;
+import 'token_constants.dart';
+
+// TODO(ahe): The following are not tokens in Dart.
+const PrecedenceInfo BACKPING_INFO =
+    const PrecedenceInfo('`', 0, BACKPING_TOKEN);
+const PrecedenceInfo BACKSLASH_INFO =
+    const PrecedenceInfo('\\', 0, BACKSLASH_TOKEN);
+const PrecedenceInfo PERIOD_PERIOD_PERIOD_INFO =
+    const PrecedenceInfo('...', 0, PERIOD_PERIOD_PERIOD_TOKEN);
+
+/**
+ * The cascade operator has the lowest precedence of any operator
+ * except assignment.
+ */
+const int CASCADE_PRECEDENCE = 2;
+const PrecedenceInfo PERIOD_PERIOD_INFO =
+    const PrecedenceInfo('..', CASCADE_PRECEDENCE, PERIOD_PERIOD_TOKEN);
+
+const PrecedenceInfo BANG_INFO = const PrecedenceInfo('!', 0, BANG_TOKEN);
+const PrecedenceInfo COLON_INFO = const PrecedenceInfo(':', 0, COLON_TOKEN);
+const PrecedenceInfo INDEX_INFO = const PrecedenceInfo('[]', 0, INDEX_TOKEN);
+const PrecedenceInfo MINUS_MINUS_INFO =
+    const PrecedenceInfo('--', POSTFIX_PRECEDENCE, MINUS_MINUS_TOKEN);
+const PrecedenceInfo PLUS_PLUS_INFO =
+    const PrecedenceInfo('++', POSTFIX_PRECEDENCE, PLUS_PLUS_TOKEN);
+const PrecedenceInfo TILDE_INFO = const PrecedenceInfo('~', 0, TILDE_TOKEN);
+
+const PrecedenceInfo FUNCTION_INFO =
+    const PrecedenceInfo('=>', 0, FUNCTION_TOKEN);
+const PrecedenceInfo HASH_INFO = const PrecedenceInfo('#', 0, HASH_TOKEN);
+const PrecedenceInfo INDEX_EQ_INFO =
+    const PrecedenceInfo('[]=', 0, INDEX_EQ_TOKEN);
+const PrecedenceInfo SEMICOLON_INFO =
+    const PrecedenceInfo(';', 0, SEMICOLON_TOKEN);
+const PrecedenceInfo COMMA_INFO = const PrecedenceInfo(',', 0, COMMA_TOKEN);
+
+const PrecedenceInfo AT_INFO = const PrecedenceInfo('@', 0, AT_TOKEN);
+
+// Assignment operators.
+const int ASSIGNMENT_PRECEDENCE = 1;
+const PrecedenceInfo AMPERSAND_EQ_INFO =
+    const PrecedenceInfo('&=', ASSIGNMENT_PRECEDENCE, AMPERSAND_EQ_TOKEN);
+const PrecedenceInfo BAR_EQ_INFO =
+    const PrecedenceInfo('|=', ASSIGNMENT_PRECEDENCE, BAR_EQ_TOKEN);
+const PrecedenceInfo CARET_EQ_INFO =
+    const PrecedenceInfo('^=', ASSIGNMENT_PRECEDENCE, CARET_EQ_TOKEN);
+const PrecedenceInfo EQ_INFO =
+    const PrecedenceInfo('=', ASSIGNMENT_PRECEDENCE, EQ_TOKEN);
+const PrecedenceInfo GT_GT_EQ_INFO =
+    const PrecedenceInfo('>>=', ASSIGNMENT_PRECEDENCE, GT_GT_EQ_TOKEN);
+const PrecedenceInfo LT_LT_EQ_INFO =
+    const PrecedenceInfo('<<=', ASSIGNMENT_PRECEDENCE, LT_LT_EQ_TOKEN);
+const PrecedenceInfo MINUS_EQ_INFO =
+    const PrecedenceInfo('-=', ASSIGNMENT_PRECEDENCE, MINUS_EQ_TOKEN);
+const PrecedenceInfo PERCENT_EQ_INFO =
+    const PrecedenceInfo('%=', ASSIGNMENT_PRECEDENCE, PERCENT_EQ_TOKEN);
+const PrecedenceInfo PLUS_EQ_INFO =
+    const PrecedenceInfo('+=', ASSIGNMENT_PRECEDENCE, PLUS_EQ_TOKEN);
+const PrecedenceInfo SLASH_EQ_INFO =
+    const PrecedenceInfo('/=', ASSIGNMENT_PRECEDENCE, SLASH_EQ_TOKEN);
+const PrecedenceInfo STAR_EQ_INFO =
+    const PrecedenceInfo('*=', ASSIGNMENT_PRECEDENCE, STAR_EQ_TOKEN);
+const PrecedenceInfo TILDE_SLASH_EQ_INFO =
+    const PrecedenceInfo('~/=', ASSIGNMENT_PRECEDENCE, TILDE_SLASH_EQ_TOKEN);
+const PrecedenceInfo QUESTION_QUESTION_EQ_INFO = const PrecedenceInfo(
+    '??=', ASSIGNMENT_PRECEDENCE, QUESTION_QUESTION_EQ_TOKEN);
+
+const PrecedenceInfo QUESTION_INFO =
+    const PrecedenceInfo('?', 3, QUESTION_TOKEN);
+
+const PrecedenceInfo QUESTION_QUESTION_INFO =
+    const PrecedenceInfo('??', 4, QUESTION_QUESTION_TOKEN);
+
+const PrecedenceInfo BAR_BAR_INFO =
+    const PrecedenceInfo('||', 5, BAR_BAR_TOKEN);
+
+const PrecedenceInfo AMPERSAND_AMPERSAND_INFO =
+    const PrecedenceInfo('&&', 6, AMPERSAND_AMPERSAND_TOKEN);
+
+const PrecedenceInfo BAR_INFO = const PrecedenceInfo('|', 9, BAR_TOKEN);
+
+const PrecedenceInfo CARET_INFO = const PrecedenceInfo('^', 10, CARET_TOKEN);
+
+const PrecedenceInfo AMPERSAND_INFO =
+    const PrecedenceInfo('&', 11, AMPERSAND_TOKEN);
+
+// Equality operators.
+const int EQUALITY_PRECEDENCE = 7;
+const PrecedenceInfo BANG_EQ_EQ_INFO =
+    const PrecedenceInfo('!==', EQUALITY_PRECEDENCE, BANG_EQ_EQ_TOKEN);
+const PrecedenceInfo BANG_EQ_INFO =
+    const PrecedenceInfo('!=', EQUALITY_PRECEDENCE, BANG_EQ_TOKEN);
+const PrecedenceInfo EQ_EQ_EQ_INFO =
+    const PrecedenceInfo('===', EQUALITY_PRECEDENCE, EQ_EQ_EQ_TOKEN);
+const PrecedenceInfo EQ_EQ_INFO =
+    const PrecedenceInfo('==', EQUALITY_PRECEDENCE, EQ_EQ_TOKEN);
+
+// Relational operators.
+const int RELATIONAL_PRECEDENCE = 8;
+const PrecedenceInfo GT_EQ_INFO =
+    const PrecedenceInfo('>=', RELATIONAL_PRECEDENCE, GT_EQ_TOKEN);
+const PrecedenceInfo GT_INFO =
+    const PrecedenceInfo('>', RELATIONAL_PRECEDENCE, GT_TOKEN);
+const PrecedenceInfo IS_INFO =
+    const PrecedenceInfo('is', RELATIONAL_PRECEDENCE, KEYWORD_TOKEN);
+const PrecedenceInfo AS_INFO =
+    const PrecedenceInfo('as', RELATIONAL_PRECEDENCE, KEYWORD_TOKEN);
+const PrecedenceInfo LT_EQ_INFO =
+    const PrecedenceInfo('<=', RELATIONAL_PRECEDENCE, LT_EQ_TOKEN);
+const PrecedenceInfo LT_INFO =
+    const PrecedenceInfo('<', RELATIONAL_PRECEDENCE, LT_TOKEN);
+
+// Shift operators.
+const PrecedenceInfo GT_GT_INFO = const PrecedenceInfo('>>', 12, GT_GT_TOKEN);
+const PrecedenceInfo LT_LT_INFO = const PrecedenceInfo('<<', 12, LT_LT_TOKEN);
+
+// Additive operators.
+const PrecedenceInfo MINUS_INFO = const PrecedenceInfo('-', 13, MINUS_TOKEN);
+const PrecedenceInfo PLUS_INFO = const PrecedenceInfo('+', 13, PLUS_TOKEN);
+
+// Multiplicative operators.
+const PrecedenceInfo PERCENT_INFO =
+    const PrecedenceInfo('%', 14, PERCENT_TOKEN);
+const PrecedenceInfo SLASH_INFO = const PrecedenceInfo('/', 14, SLASH_TOKEN);
+const PrecedenceInfo STAR_INFO = const PrecedenceInfo('*', 14, STAR_TOKEN);
+const PrecedenceInfo TILDE_SLASH_INFO =
+    const PrecedenceInfo('~/', 14, TILDE_SLASH_TOKEN);
+
+const int POSTFIX_PRECEDENCE = 15;
+const PrecedenceInfo PERIOD_INFO =
+    const PrecedenceInfo('.', POSTFIX_PRECEDENCE, PERIOD_TOKEN);
+const PrecedenceInfo QUESTION_PERIOD_INFO =
+    const PrecedenceInfo('?.', POSTFIX_PRECEDENCE, QUESTION_PERIOD_TOKEN);
+
+const PrecedenceInfo KEYWORD_INFO =
+    const PrecedenceInfo('keyword', 0, KEYWORD_TOKEN);
+
+const PrecedenceInfo EOF_INFO = const PrecedenceInfo('EOF', 0, EOF_TOKEN);
+
+const PrecedenceInfo IDENTIFIER_INFO =
+    const PrecedenceInfo('identifier', 0, IDENTIFIER_TOKEN);
+
+const PrecedenceInfo BAD_INPUT_INFO =
+    const PrecedenceInfo('malformed input', 0, BAD_INPUT_TOKEN);
+
+const PrecedenceInfo OPEN_PAREN_INFO =
+    const PrecedenceInfo('(', POSTFIX_PRECEDENCE, OPEN_PAREN_TOKEN);
+
+const PrecedenceInfo CLOSE_PAREN_INFO =
+    const PrecedenceInfo(')', 0, CLOSE_PAREN_TOKEN);
+
+const PrecedenceInfo OPEN_CURLY_BRACKET_INFO =
+    const PrecedenceInfo('{', 0, OPEN_CURLY_BRACKET_TOKEN);
+
+const PrecedenceInfo CLOSE_CURLY_BRACKET_INFO =
+    const PrecedenceInfo('}', 0, CLOSE_CURLY_BRACKET_TOKEN);
+
+const PrecedenceInfo INT_INFO = const PrecedenceInfo('int', 0, INT_TOKEN);
+
+const PrecedenceInfo STRING_INFO =
+    const PrecedenceInfo('string', 0, STRING_TOKEN);
+
+const PrecedenceInfo OPEN_SQUARE_BRACKET_INFO =
+    const PrecedenceInfo('[', POSTFIX_PRECEDENCE, OPEN_SQUARE_BRACKET_TOKEN);
+
+const PrecedenceInfo CLOSE_SQUARE_BRACKET_INFO =
+    const PrecedenceInfo(']', 0, CLOSE_SQUARE_BRACKET_TOKEN);
+
+const PrecedenceInfo DOUBLE_INFO =
+    const PrecedenceInfo('double', 0, DOUBLE_TOKEN);
+
+const PrecedenceInfo STRING_INTERPOLATION_INFO =
+    const PrecedenceInfo('\${', 0, STRING_INTERPOLATION_TOKEN);
+
+const PrecedenceInfo STRING_INTERPOLATION_IDENTIFIER_INFO =
+    const PrecedenceInfo('\$', 0, STRING_INTERPOLATION_IDENTIFIER_TOKEN);
+
+const PrecedenceInfo HEXADECIMAL_INFO =
+    const PrecedenceInfo('hexadecimal', 0, HEXADECIMAL_TOKEN);
+
+const PrecedenceInfo COMMENT_INFO =
+    const PrecedenceInfo('comment', 0, COMMENT_TOKEN);