pkg/compiler/lib/src/tokens/precedence_constants.dart

// 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);