diff options
Diffstat (limited to 'src/common/lib.scm')
| -rw-r--r-- | src/common/lib.scm | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/src/common/lib.scm b/src/common/lib.scm new file mode 100644 index 0000000..b0fa2d0 --- /dev/null +++ b/src/common/lib.scm @@ -0,0 +1,238 @@ +;*=====================================================================*/ +;* serrano/prgm/project/skribe/src/common/lib.scm */ +;* ------------------------------------------------------------- */ +;* Author : Manuel Serrano */ +;* Creation : Wed Sep 10 11:57:54 2003 */ +;* Last change : Wed Oct 27 12:16:40 2004 (eg) */ +;* Copyright : 2003-04 Manuel Serrano */ +;* ------------------------------------------------------------- */ +;* The Scheme independent lib part. */ +;* ------------------------------------------------------------- */ +;* Implementation: @label lib@ */ +;* bigloo: @path ../bigloo/lib.bgl@ */ +;*=====================================================================*/ + +;*---------------------------------------------------------------------*/ +;* engine-custom-add! ... */ +;*---------------------------------------------------------------------*/ +(define (engine-custom-add! e id val) + (let ((old (engine-custom e id))) + (if (unspecified? old) + (engine-custom-set! e id (list val)) + (engine-custom-set! e id (cons val old))))) + +;*---------------------------------------------------------------------*/ +;* find-markup-ident ... */ +;*---------------------------------------------------------------------*/ +(define (find-markup-ident ident) + (let ((r (find-markups ident))) + (if (or (pair? r) (null? r)) + r + '()))) + +;*---------------------------------------------------------------------*/ +;* container-search-down ... */ +;*---------------------------------------------------------------------*/ +(define (container-search-down pred obj) + (with-debug 4 'container-search-down + (debug-item "obj=" (find-runtime-type obj)) + (let loop ((obj (markup-body obj))) + (cond + ((pair? obj) + (apply append (map (lambda (o) (loop o)) obj))) + ((container? obj) + (let ((rest (loop (markup-body obj)))) + (if (pred obj) + (cons obj rest) + rest))) + ((pred obj) + (list obj)) + (else + '()))))) + +;*---------------------------------------------------------------------*/ +;* search-down ... */ +;*---------------------------------------------------------------------*/ +(define (search-down pred obj) + (with-debug 4 'search-down + (debug-item "obj=" (find-runtime-type obj)) + (let loop ((obj (markup-body obj))) + (cond + ((pair? obj) + (apply append (map (lambda (o) (loop o)) obj))) + ((markup? obj) + (let ((rest (loop (markup-body obj)))) + (if (pred obj) + (cons obj rest) + rest))) + ((pred obj) + (list obj)) + (else + '()))))) + +;*---------------------------------------------------------------------*/ +;* find-down ... */ +;*---------------------------------------------------------------------*/ +(define (find-down pred obj) + (with-debug 4 'find-down + (debug-item "obj=" (find-runtime-type obj)) + (let loop ((obj obj)) + (cond + ((pair? obj) + (apply append (map (lambda (o) (loop o)) obj))) + ((markup? obj) + (debug-item "loop=" (find-runtime-type obj) + " " (markup-ident obj)) + (if (pred obj) + (list (cons obj (loop (markup-body obj)))) + '())) + (else + (if (pred obj) + (list obj) + '())))))) + +;*---------------------------------------------------------------------*/ +;* find1-down ... */ +;*---------------------------------------------------------------------*/ +(define (find1-down pred obj) + (with-debug 4 'find1-down + (let loop ((obj obj) + (stack '())) + (debug-item "obj=" (find-runtime-type obj) + " " (if (markup? obj) (markup-markup obj) "???") + " " (if (markup? obj) (markup-ident obj) "")) + (cond + ((memq obj stack) + (skribe-error 'find1-down "Illegal cyclic object" obj)) + ((pair? obj) + (let liip ((obj obj)) + (cond + ((null? obj) + #f) + (else + (or (loop (car obj) (cons obj stack)) + (liip (cdr obj))))))) + ((pred obj) + obj) + ((markup? obj) + (loop (markup-body obj) (cons obj stack))) + (else + #f))))) + +;*---------------------------------------------------------------------*/ +;* find-up ... */ +;*---------------------------------------------------------------------*/ +(define (find-up pred obj) + (let loop ((obj obj) + (res '())) + (cond + ((not (ast? obj)) + res) + ((pred obj) + (loop (ast-parent obj) (cons obj res))) + (else + (loop (ast-parent obj) (cons obj res)))))) + +;*---------------------------------------------------------------------*/ +;* find1-up ... */ +;*---------------------------------------------------------------------*/ +(define (find1-up pred obj) + (let loop ((obj obj)) + (cond + ((not (ast? obj)) + #f) + ((pred obj) + obj) + (else + (loop (ast-parent obj)))))) + +;*---------------------------------------------------------------------*/ +;* ast-document ... */ +;*---------------------------------------------------------------------*/ +(define (ast-document m) + (find1-up document? m)) + +;*---------------------------------------------------------------------*/ +;* ast-chapter ... */ +;*---------------------------------------------------------------------*/ +(define (ast-chapter m) + (find1-up (lambda (n) (is-markup? n 'chapter)) m)) + +;*---------------------------------------------------------------------*/ +;* ast-section ... */ +;*---------------------------------------------------------------------*/ +(define (ast-section m) + (find1-up (lambda (n) (is-markup? n 'section)) m)) + +;*---------------------------------------------------------------------*/ +;* the-body ... */ +;* ------------------------------------------------------------- */ +;* Filter out the options */ +;*---------------------------------------------------------------------*/ +(define (the-body opt+) + (let loop ((opt* opt+) + (res '())) + (cond + ((null? opt*) + (reverse! res)) + ((not (pair? opt*)) + (skribe-error 'the-body "Illegal body" opt*)) + ((keyword? (car opt*)) + (if (null? (cdr opt*)) + (skribe-error 'the-body "Illegal option" (car opt*)) + (loop (cddr opt*) res))) + (else + (loop (cdr opt*) (cons (car opt*) res)))))) + +;*---------------------------------------------------------------------*/ +;* the-options ... */ +;* ------------------------------------------------------------- */ +;* Returns an list made of options. The OUT argument contains */ +;* keywords that are filtered out. */ +;*---------------------------------------------------------------------*/ +(define (the-options opt+ . out) + (let loop ((opt* opt+) + (res '())) + (cond + ((null? opt*) + (reverse! res)) + ((not (pair? opt*)) + (skribe-error 'the-options "Illegal options" opt*)) + ((keyword? (car opt*)) + (cond + ((null? (cdr opt*)) + (skribe-error 'the-options "Illegal option" (car opt*))) + ((memq (car opt*) out) + (loop (cdr opt*) res)) + (else + (loop (cdr opt*) + (cons (list (car opt*) (cadr opt*)) res))))) + (else + (loop (cdr opt*) res))))) + +;*---------------------------------------------------------------------*/ +;* list-split ... */ +;*---------------------------------------------------------------------*/ +(define (list-split l num . fill) + (let loop ((l l) + (i 0) + (acc '()) + (res '())) + (cond + ((null? l) + (reverse! (cons (if (or (null? fill) (= i num)) + (reverse! acc) + (append! (reverse! acc) + (make-list (- num i) (car fill)))) + res))) + ((= i num) + (loop l + 0 + '() + (cons (reverse! acc) res))) + (else + (loop (cdr l) + (+ i 1) + (cons (car l) acc) + res))))) + |