Stdlib.Genlex(3o) OCaml library Stdlib.Genlex(3o)
NAME
Stdlib.Genlex - no description
Module
Module Stdlib.Genlex
Documentation
Module Genlex
: (module Stdlib__Genlex)
type token =
| Kwd of string
| Ident of string
| Int of int
| Float of float
| String of string
| Char of char
The type of tokens. The lexical classes are: Int and Float for integer
and floating-point numbers; String for string literals, enclosed in
double quotes; Char for character literals, enclosed in single quotes;
Ident for identifiers (either sequences of letters, digits, underscores
and quotes, or sequences of 'operator characters' such as + , * , etc);
and Kwd for keywords (either identifiers or single 'special characters'
such as ( , } , etc).
val make_lexer : string list -> char Stream.t -> token Stream.t
Construct the lexer function. The first argument is the list of key-
words. An identifier s is returned as Kwd s if s belongs to this list,
and as Ident s otherwise. A special character s is returned as Kwd s
if s belongs to this list, and cause a lexical error (exception
Stream.Error with the offending lexeme as its parameter) otherwise.
Blanks and newlines are skipped. Comments delimited by (* and *) are
skipped as well, and can be nested. A Stream.Failure exception is
raised if end of stream is unexpectedly reached.
OCamldoc 2023-02-12 Stdlib.Genlex(3o)
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