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-rw-r--r--src/bigloo/resolve.scm283
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diff --git a/src/bigloo/resolve.scm b/src/bigloo/resolve.scm
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-;*=====================================================================*/
-;* serrano/prgm/project/skribe/src/bigloo/resolve.scm */
-;* ------------------------------------------------------------- */
-;* Author : Manuel Serrano */
-;* Creation : Fri Jul 25 09:31:18 2003 */
-;* Last change : Sun Jul 11 09:17:52 2004 (serrano) */
-;* Copyright : 2003-04 Manuel Serrano */
-;* ------------------------------------------------------------- */
-;* The Skribe resolve stage */
-;*=====================================================================*/
-
-;*---------------------------------------------------------------------*/
-;* The module */
-;*---------------------------------------------------------------------*/
-(module skribe_resolve
-
- (include "debug.sch")
-
- (import skribe_types
- skribe_lib
- skribe_bib
- skribe_eval)
-
- (import skribe_index)
-
- (export (resolve! ::obj ::%engine ::pair-nil)
- (resolve-children ::obj)
- (resolve-children* ::obj)
- (resolve-parent ::%ast ::pair-nil)
- (resolve-search-parent ::%ast ::pair-nil ::procedure)
- (resolve-counter ::%ast ::pair-nil ::symbol ::obj . o)
- (resolve-ident ::bstring ::obj ::%ast ::obj)))
-
-;*---------------------------------------------------------------------*/
-;* *unresolved* ... */
-;*---------------------------------------------------------------------*/
-(define *unresolved* #f)
-
-;*---------------------------------------------------------------------*/
-;* resolve! ... */
-;* ------------------------------------------------------------- */
-;* This function iterates over an ast until all unresolved */
-;* references are resolved. */
-;*---------------------------------------------------------------------*/
-(define (resolve! ast engine env)
- (with-debug 3 'resolve
- (debug-item "ast=" ast)
- (let ((old *unresolved*))
- (let loop ((ast ast))
- (set! *unresolved* #f)
- (let ((ast (do-resolve! ast engine env)))
- (if *unresolved*
- (loop ast)
- (begin
- (set! *unresolved* old)
- ast)))))))
-
-;*---------------------------------------------------------------------*/
-;* do-resolve! ... */
-;*---------------------------------------------------------------------*/
-(define-generic (do-resolve! ast engine env)
- (if (pair? ast)
- (do-resolve*! ast engine env)
- ast))
-
-;*---------------------------------------------------------------------*/
-;* do-resolve! ::%node ... */
-;*---------------------------------------------------------------------*/
-(define-method (do-resolve! node::%node engine env)
- (with-access::%node node (body options parent)
- (with-debug 5 'do-resolve::body
- (debug-item "node=" (if (markup? node)
- (markup-markup node)
- (find-runtime-type node)))
- (debug-item "body=" (find-runtime-type body))
- (if (not (eq? parent #unspecified))
- node
- (let ((p (assq 'parent env)))
- (set! parent (and (pair? p) (pair? (cdr p)) (cadr p)))
- (if (pair? options)
- (begin
- (debug-item "unresolved options=" options)
- (for-each (lambda (o)
- (set-car! (cdr o)
- (do-resolve! (cadr o) engine env)))
- options)
- (debug-item "resolved options=" options)))))
- (set! body (do-resolve! body engine env))
- node)))
-
-;*---------------------------------------------------------------------*/
-;* do-resolve! ::%container ... */
-;*---------------------------------------------------------------------*/
-(define-method (do-resolve! node::%container engine env0)
- (with-access::%container node (body options env parent)
- (with-debug 5 'do-resolve::%container
- (debug-item "markup=" (markup-markup node))
- (debug-item "body=" (find-runtime-type body))
- (debug-item "env0=" env0)
- (debug-item "env=" env)
- (if (not (eq? parent #unspecified))
- (let ((e `((parent ,node) ,@env ,@env0)))
- (set! body (do-resolve! body engine e))
- node)
- (let ((p (assq 'parent env0)))
- (set! parent (and (pair? p) (pair? (cdr p)) (cadr p)))
- (if (pair? options)
- (let ((e (append `((parent ,node)) env0)))
- (debug-item "unresolved options=" options)
- (for-each (lambda (o)
- (set-car! (cdr o)
- (do-resolve! (cadr o) engine e)))
- options)
- (debug-item "resolved options=" options)))
- (let ((e `((parent ,node) ,@env ,@env0)))
- (set! body (do-resolve! body engine e))
- node))))
- ;; return the container
- node))
-
-;*---------------------------------------------------------------------*/
-;* do-resolve! ::%document ... */
-;*---------------------------------------------------------------------*/
-(define-method (do-resolve! node::%document engine env0)
- (with-access::%document node (env)
- (call-next-method)
- ;; resolve the engine custom
- (let ((env (append `((parent ,node)) env0)))
- (for-each (lambda (c)
- (let ((i (car c))
- (a (cadr c)))
- (debug-item "custom=" i " " a)
- (set-car! (cdr c) (do-resolve! a engine env))))
- (%engine-customs engine)))
- ;; return the container
- node))
-
-;*---------------------------------------------------------------------*/
-;* do-resolve! ::%unresolved ... */
-;*---------------------------------------------------------------------*/
-(define-method (do-resolve! node::%unresolved engine env)
- (with-debug 5 'do-resolve::%unresolved
- (debug-item "node=" node)
- (with-access::%unresolved node (proc parent loc)
- (let ((p (assq 'parent env)))
- (set! parent (and (pair? p) (pair? (cdr p)) (cadr p))))
- (let ((res (proc node engine env)))
- (if (ast? res) (%ast-loc-set! res loc))
- (debug-item "res=" res)
- (set! *unresolved* #t)
- res))))
-
-;*---------------------------------------------------------------------*/
-;* do-resolve! ::handle ... */
-;*---------------------------------------------------------------------*/
-(define-method (do-resolve! node::%handle engine env)
- node)
-
-;*---------------------------------------------------------------------*/
-;* do-resolve*! ... */
-;*---------------------------------------------------------------------*/
-(define (do-resolve*! n+ engine env)
- (let loop ((n* n+))
- (cond
- ((pair? n*)
- (set-car! n* (do-resolve! (car n*) engine env))
- (loop (cdr n*)))
- ((not (null? n*))
- (skribe-error 'do-resolve "Illegal argument" n*))
- (else
- n+))))
-
-;*---------------------------------------------------------------------*/
-;* resolve-children ... */
-;*---------------------------------------------------------------------*/
-(define (resolve-children n)
- (if (pair? n)
- n
- (list n)))
-
-;*---------------------------------------------------------------------*/
-;* resolve-children* ... */
-;*---------------------------------------------------------------------*/
-(define (resolve-children* n)
- (cond
- ((pair? n)
- (map resolve-children* n))
- ((%container? n)
- (cons n (resolve-children* (%container-body n))))
- (else
- (list n))))
-
-;*---------------------------------------------------------------------*/
-;* resolve-parent ... */
-;*---------------------------------------------------------------------*/
-(define (resolve-parent n e)
- (with-debug 5 'resolve-parent
- (debug-item "n=" n)
- (cond
- ((not (%ast? n))
- (let ((c (assq 'parent e)))
- (if (pair? c)
- (cadr c)
- n)))
- ((eq? (%ast-parent n) #unspecified)
- (skribe-error 'resolve-parent "Orphan node" n))
- (else
- (%ast-parent n)))))
-
-;*---------------------------------------------------------------------*/
-;* resolve-search-parent ... */
-;*---------------------------------------------------------------------*/
-(define (resolve-search-parent n e pred)
- (with-debug 5 'resolve-search-parent
- (debug-item "node=" (find-runtime-type n))
- (debug-item "searching=" pred)
- (let ((p (resolve-parent n e)))
- (debug-item "parent=" (find-runtime-type p) " "
- (if (markup? p) (markup-markup p) "???"))
- (cond
- ((pred p)
- p)
- ((%unresolved? p)
- p)
- ((not p)
- #f)
- (else
- (resolve-search-parent p e pred))))))
-
-;*---------------------------------------------------------------------*/
-;* resolve-counter ... */
-;*---------------------------------------------------------------------*/
-(define (resolve-counter n e cnt val . opt)
- (let ((c (assq (symbol-append cnt '-counter) e)))
- (if (not (pair? c))
- (if (or (null? opt) (not (car opt)) (null? e))
- (skribe-error cnt "Orphan node" n)
- (begin
- (set-cdr! (last-pair e)
- (list (list (symbol-append cnt '-counter) 0)
- (list (symbol-append cnt '-env) '())))
- (resolve-counter n e cnt val)))
- (let* ((num (cadr c))
- (nval (if (integer? val)
- val
- (+ 1 num))))
- (let ((c2 (assq (symbol-append cnt '-env) e)))
- (set-car! (cdr c2) (cons (resolve-parent n e) (cadr c2))))
- (cond
- ((integer? val)
- (set-car! (cdr c) val)
- (car val))
- ((not val)
- val)
- (else
- (set-car! (cdr c) (+ 1 num))
- (+ 1 num)))))))
-
-;*---------------------------------------------------------------------*/
-;* resolve-ident ... */
-;*---------------------------------------------------------------------*/
-(define (resolve-ident ident markup n e)
- (with-debug 4 'resolve-ident
- (debug-item "ident=" ident)
- (debug-item "markup=" markup)
- (debug-item "n=" (if (markup? n) (markup-markup n) n))
- (if (not (string? ident))
- (skribe-type-error 'resolve-ident
- "Illegal ident"
- ident
- "string")
- (let ((mks (find-markups ident)))
- (and mks
- (if (not markup)
- (car mks)
- (let loop ((mks mks))
- (cond
- ((null? mks)
- #f)
- ((is-markup? (car mks) markup)
- (car mks))
- (else
- (loop (cdr mks)))))))))))
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