You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
|
|
|
|
#cs
|
|
|
|
|
(module yacc mzscheme
|
|
|
|
|
|
|
|
|
|
(require-for-syntax "private-yacc/parser-builder.ss")
|
|
|
|
|
(require "private-yacc/terminal.ss"
|
|
|
|
|
"private-yacc/parser-actions.ss"
|
|
|
|
|
"private-yacc/array2d.ss")
|
|
|
|
|
|
|
|
|
|
(provide define-tokens define-empty-tokens parser parser-debug)
|
|
|
|
|
|
|
|
|
|
(define-syntax parser
|
|
|
|
|
(lambda (stx)
|
|
|
|
|
(syntax-case stx ()
|
|
|
|
|
((_ start input-terms assocs prods)
|
|
|
|
|
(build-parser (syntax start) (syntax input-terms)
|
|
|
|
|
(syntax assocs) (syntax prods)
|
|
|
|
|
"" #'here stx))
|
|
|
|
|
(_
|
|
|
|
|
(raise-syntax-error
|
|
|
|
|
#f
|
|
|
|
|
"parser must have the form (parser start-symbol tokens precedence/associativity productions)"
|
|
|
|
|
stx)))))
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(define-syntax parser-debug
|
|
|
|
|
(lambda (stx)
|
|
|
|
|
(syntax-case stx ()
|
|
|
|
|
((_ filename start input-terms assocs prods)
|
|
|
|
|
(string? (syntax-object->datum (syntax filename)))
|
|
|
|
|
(build-parser (syntax start) (syntax input-terms)
|
|
|
|
|
(syntax assocs) (syntax prods)
|
|
|
|
|
(syntax-object->datum (syntax filename))
|
|
|
|
|
#'here stx))
|
|
|
|
|
(_
|
|
|
|
|
(raise-syntax-error
|
|
|
|
|
#f
|
|
|
|
|
"parser must have the form (parser-debug filename start-symbol tokens precedence/associativity productions) where filename is a string"
|
|
|
|
|
stx)))))
|
|
|
|
|
|
|
|
|
|
)
|
