Scala 2.6.1-RC2
API Specification

This document is the API specification for Scala Library Documentation

Class Summary
`abstract class` | Lexical `extends` Scanners `with` Tokens This component complements the `Scanners` component with common operations for lexical parsers. {@see StdLexical} for a concrete implementation for a simple, Scala-like language.
`trait` | Scanners `extends` Parsers This component provides core functionality for lexical parsers. See its subclasses {@see Lexical} and -- most interestingly {@see StdLexical}, for more functionality. @requires token a parser that produces a token (from a stream of characters) @requires whitespace a unit-parser for white-space @provides Scanner essentially a parser that parses a stream of characters to produce `Token's, which are typically passed to a syntactical parser (which operates on `Token's, not on individual characters).
`class` | StdLexical `extends` Lexical `with` StdTokens This component provides a standard lexical parser for a simple, Scala-like language. It parses keywords and identifiers, numeric literals (integers), strings, and delimiters. To distinguish between identifiers and keywords, it uses a set of reserved identifiers: every string contained in `reserved' is returned as a keyword token. (Note that "=>" is hard-coded as a keyword.) Additionally, the kinds of delimiters can be specified by the `delimiters' set. Usually this component is used to break character-based input into bigger tokens, which are then passed to a token-parser {@see TokenParsers}.