CHAR: - Factor Documentation

Vocabulary
syntax

Syntax

CHAR: token

Inputs and outputs

token

a literal character, escape code, or Unicode code point name

Word description
Adds a Unicode code point to the parse tree.

Examples

CHAR: x
CHAR: \u000032
CHAR: \u{exclamation-mark}
CHAR: exclamation-mark
CHAR: ugaritic-letter-samka

Definition

USING: combinators kernel lexer namespaces sequences splitting
strings strings.parser ;

IN: syntax

SYNTAX: CHAR:
    scan-token {
        { [ dup length 1 = ] [ first ] }
        { [ "\\" ?head ] [ next-escape >string "" assert= ] }
        [ name>char-hook get ( name -- char ) call-effect ]
    } cond suffix! ;