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-;;;;
-;;;; resolve.stk -- Skribe Resolve Stage
-;;;;
-;;;; Copyright © 2003-2004 Erick Gallesio - I3S-CNRS/ESSI <eg@unice.fr>
-;;;;
-;;;;
-;;;; This program is free software; you can redistribute it and/or modify
-;;;; it under the terms of the GNU General Public License as published by
-;;;; the Free Software Foundation; either version 2 of the License, or
-;;;; (at your option) any later version.
-;;;;
-;;;; This program is distributed in the hope that it will be useful,
-;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-;;;; GNU General Public License for more details.
-;;;;
-;;;; You should have received a copy of the GNU General Public License
-;;;; along with this program; if not, write to the Free Software
-;;;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
-;;;; USA.
-;;;;
-;;;; Author: Erick Gallesio [eg@essi.fr]
-;;;; Creation date: 13-Aug-2003 18:39 (eg)
-;;;; Last file update: 17-Feb-2004 14:43 (eg)
-;;;;
-
-(define-module SKRIBE-RESOLVE-MODULE
- (import SKRIBE-DEBUG-MODULE SKRIBE-RUNTIME-MODULE)
- (export resolve! resolve-search-parent resolve-children resolve-children*
- find1 resolve-counter resolve-parent resolve-ident)
-
-(define *unresolved* #f)
-(define-generic do-resolve!)
-
-
-;;;; ======================================================================
-;;;;
-;;;; 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)
- (fluid-let ((*unresolved* #f))
- (let Loop ((ast ast))
- (set! *unresolved* #f)
- (let ((ast (do-resolve! ast engine env)))
- (if *unresolved*
- (Loop ast)
- ast))))))
-
-;;;; ======================================================================
-;;;;
-;;;; D O - R E S O L V E !
-;;;;
-;;;; ======================================================================
-
-(define-method do-resolve! (ast engine env)
- ast)
-
-
-(define-method do-resolve! ((ast <pair>) engine env)
- (let Loop ((n* ast))
- (cond
- ((pair? n*)
- (set-car! n* (do-resolve! (car n*) engine env))
- (Loop (cdr n*)))
- ((not (null? n*))
- (error 'do-resolve "Illegal argument" n*))
- (else
- ast))))
-
-
-(define-method do-resolve! ((node <node>) engine env)
- (let ((body (slot-ref node 'body))
- (options (slot-ref node 'options))
- (parent (slot-ref node 'parent)))
- (with-debug 5 'do-resolve<body>
- (debug-item "body=" body)
- (when (eq? parent 'unspecified)
- (let ((p (assq 'parent env)))
- (slot-set! node 'parent (and (pair? p) (pair? (cdr p)) (cadr p)))
- (when (pair? options)
- (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))))
- (slot-set! node 'body (do-resolve! body engine env))
- node)))
-
-
-
-(define-method do-resolve! ((node <container>) engine env0)
- (let ((body (slot-ref node 'body))
- (options (slot-ref node 'options))
- (env (slot-ref node 'env))
- (parent (slot-ref node 'parent)))
- (with-debug 5 'do-resolve<container>
- (debug-item "markup=" (markup-markup node))
- (debug-item "body=" body)
- (debug-item "env0=" env0)
- (debug-item "env=" env)
- (when (eq? parent 'unspecified)
- (let ((p (assq 'parent env0)))
- (slot-set! node 'parent (and (pair? p) (pair? (cdr p)) (cadr p)))
- (when (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)))
- (slot-set! node 'body (do-resolve! body engine e)))))
- node)))
-
-
-(define-method do-resolve! ((node <document>) engine env0)
- (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))))
- (slot-ref engine 'customs)))
- node)
-
-
-(define-method do-resolve! ((node <unresolved>) engine env)
- (with-debug 5 'do-resolve<unresolved>
- (debug-item "node=" node)
- (let ((p (assq 'parent env)))
- (slot-set! node 'parent (and (pair? p) (pair? (cdr p)) (cadr p))))
-
- (let* ((proc (slot-ref node 'proc))
- (res (resolve! (proc node engine env) engine env))
- (loc (ast-loc node)))
- (when (ast? res)
- (ast-loc-set! res loc))
- (debug-item "res=" res)
- (set! *unresolved* #t)
- res)))
-
-
-(define-method do-resolve! ((node <handle>) engine env)
- node)
-
-
-;;;; ======================================================================
-;;;;
-;;;; RESOLVE-PARENT
-;;;;
-;;;; ======================================================================
-(define (resolve-parent n e)
- (with-debug 5 'resolve-parent
- (debug-item "n=" n)
- (cond
- ((not (is-a? n <ast>))
- (let ((c (assq 'parent e)))
- (if (pair? c)
- (cadr c)
- n)))
- ((eq? (slot-ref n 'parent) 'unspecified)
- (skribe-error 'resolve-parent "Orphan node" n))
- (else
- (slot-ref n 'parent)))))
-
-
-;;;; ======================================================================
-;;;;
-;;;; RESOLVE-SEARCH-PARENT
-;;;;
-;;;; ======================================================================
-(define (resolve-search-parent n e pred)
- (with-debug 5 'resolve-search-parent
- (debug-item "node=" n)
- (debug-item "searching=" pred)
- (let ((p (resolve-parent n e)))
- (debug-item "parent=" p " "
- (if (is-a? p 'markup) (slot-ref p 'markup) "???"))
- (cond
- ((pred p) p)
- ((is-a? p <unresolved>) p)
- ((not p) #f)
- (else (resolve-search-parent p e pred))))))
-
-;;;; ======================================================================
-;;;;
-;;;; RESOLVE-COUNTER
-;;;;
-;;;; ======================================================================
-;;FIXME: factoriser
-(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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