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## Package com.singularsys.jep.configurableparser.matchers

This package contains matchers for tokens and grammar elements.

See:
Description

Interface Summary
GrammarMatcher | Interface defining matchers for custom grammatical elements.
TokenBuilder | Sub-interface of TokenMatcher which allows tokens to be created without matching input text.
TokenMatcher | Interface defining classes which match tokens

Class Summary
ArrayAccessGrammarMatcher | Matches syntax for array element access u[3].
CommentTokenMatcher | Matches various styles of comments.
FunctionGrammarMatcher | A GrammarMatcher which matches functions in the form 'atan2(y,x)'.
IdentifierTokenMatcher | Matches identifiers: variables or function names.
ListGrammarMatcher | A GrammarMatcher which matches lists of items.
ListOrBracketGrammarMatcher | A GrammarMatcher which matches overloaded lists of items or brackets.
MultiLineMatcher | Matches tokens which span multiple lines of the input.
NumberTokenMatcher | Matches numbers.
OperatorTokenMatcher | TokenMatcher for matching operators from the operator set.
RegExpTokenMatcher | An abstract TokenMatcher which uses RegExp patterns to match patterns.
RoundBracketGrammarMatcher | A GrammarMatcher which matches bracketed expressions.
StringTokenMatcher | Base class for matching quoted strings.
SymbolTokenMatcher | Matches a fixed set of symbols, each represented by a SymbolToken.
TerminatorTokenMatcher | A token matcher which matches the end of an expression
WhiteSpaceTokenMatcher | Matches whitespace.

## Package com.singularsys.jep.configurableparser.matchers Description

This package contains matchers for tokens and grammar elements.

### TokenMatchers

The following classes implement the `TokenMatcher` interface and are responsible for matching various elements in the input .

Comments
  `CommentTokenMatcher` contains static factory methods for matching various styles of comments.
  - `CommentTokenMatcher.hashCommentMatcher()` match single line comments starting #
  - `CommentTokenMatcher.slashSlashCommentMatcher()` match single line comments starting //
  - `CommentTokenMatcher.slashStarCommentMatcher()` matches a single line java style /* ...*/ comment
  - `CommentTokenMatcher.multiLineSlashStarCommentMatcher()` matches a multi-line line java style /* ...*/ comment
Whitespace
  `WhiteSpaceTokenMatcher.defaultWhiteSpaceTokenMatcher()` matches standard white space characters.
Strings
  `StringTokenMatcher` contains static factory methods for matching single and double quoted string.
  - `StringTokenMatcher.doubleQuoteStringMatcher()` matches double quoted strings " ... "
  - `StringTokenMatcher.singleQuoteStringMatcher()` matches single quoted strings ' ... '
Numbers
  `NumberTokenMatcher` contains static factory methods for matching single and double quoted string.
  - `NumberTokenMatcher.defaultNumberTokenMatcher()` matches decimal numbers 123.456 without an exponent.
  - `NumberTokenMatcher.exponentNumberTokenMatcher()` matches decimal numbers 1.23456e2 with or without an exponent.
Identifiers
  `IdentifierTokenMatcher` is the basic class for matching variable and function names. Static factory methods are provided to match specific type of input.
  - `IdentifierTokenMatcher.basicIndetifierMatcher()` java-style names.
  - `IdentifierTokenMatcher.dottedIndetifierMatcher()` java-style names containing dots.
Operators
  `OperatorTokenMatcher` a token matcher which matches operators specified in the OperatorTable.
Symbols
  `SymbolTokenMatcher` matches other symbols used by the parser.

See Also:
  `Token`, `Tokenizer`

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Copyright © 2007 Singular Systems http://www.singularsys.com/jep