cl-unification-cvs May 2007

cl-unification-cvs@common-lisp.net

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[cl-unification-cvs] CVS cl-unification
by mantoniotti 21 May '07

21 May '07

Update of /project/cl-unification/cvsroot/cl-unification In directory clnet:/tmp/cvs-serv31824 Modified Files: match-block.lisp Log Message: See previous message. --- /project/cl-unification/cvsroot/cl-unification/match-block.lisp 2005/10/25 19:08:15 1.6 +++ /project/cl-unification/cvsroot/cl-unification/match-block.lisp 2007/05/21 12:33:07 1.7 @@ -10,7 +10,7 @@ (defmacro match ((template object &key - (substitution (make-empty-environment)) + (substitution '(make-empty-environment)) (errorp t) (error-value nil)) &body forms) @@ -39,7 +39,7 @@ ) `(block nil (handler-case - (let* ((,env-var (unify ',template ,object ,substitution)) + (let* ((,env-var (unify ,template ,object ,substitution)) ,@(generate-var-bindings) ) (declare (ignorable ,@(mapcar #'first (generate-var-bindings)))) @@ -49,7 +49,7 @@ (unification-failure (uf) (if ,errorp - (signal uf) + (error uf) ,error-value)) ))))) @@ -155,7 +155,7 @@ <form> and <forms> are regular Common Lisp forms. <template> is a unification template. -The full syntax of MATCHING is +The full syntax of MATCH-CASE is match-case <object> (&key errorp default-substitution) <clauses> @@ -163,7 +163,7 @@ present in the template are bound lexically. Note that both variable names '?FOO' and 'FOO' are bound for convenience. -The values returned by the MATCHING form are those of the last form in +The values returned by the MATCH-CASE form are those of the last form in the first clause that satisfies the match test. If ERRORP is non-NIL then if none of the regular clauses matches, then @@ -188,7 +188,7 @@ ) (labels ((generate-matchers (clauses) (if (null clauses) - otherwise-clause + `(progn ,@(rest otherwise-clause)) (destructuring-bind (pattern &rest body) (car clauses) `(handler-case (match (,pattern ,object-var)

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[cl-unification-cvs] CVS cl-unification
by mantoniotti 21 May '07

21 May '07

Update of /project/cl-unification/cvsroot/cl-unification In directory clnet:/tmp/cvs-serv31810 Added Files: apply-substitution.lisp Log Message: See previous message. --- /project/cl-unification/cvsroot/cl-unification/apply-substitution.lisp 2007/05/21 12:33:05 NONE +++ /project/cl-unification/cvsroot/cl-unification/apply-substitution.lisp 2007/05/21 12:33:05 1.1 ;;; -*- Mode: Lisp -*- ;;; substitutions.lisp ;;; General CL structures unifier. ;;; Substitution definitions. (in-package "CL.EXT.DACF.UNIFICATION") ; DACF = Data And Control Flow. ;;;--------------------------------------------------------------------------- ;;; Substitution application. (defgeneric apply-substitution (substitution item)) (defmethod apply-substitution ((substitution environment) (s symbol)) (cond ((variable-any-p s) s) ((variablep s) (multiple-value-bind (val foundp) (find-variable-value s substitution) (cond (foundp val) (t (warn "~S is a free variable in the current environment." s) s)))) (t s))) (defmethod apply-substitution ((substitution environment) (l cons)) (cons (apply-substitution substitution (first l)) (apply-substitution substitution (rest l)))) (defmethod apply-substitution ((substitution environment) (l null)) '()) (export '(apply-substitution)) (defun ground-term (term &optional (substitution (make-empty-environment))) (apply-substitution substitution term)) ;;; end of file -- apply-substitutions.lisp --

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[cl-unification-cvs] CVS cl-unification
by mantoniotti 21 May '07

21 May '07

Update of /project/cl-unification/cvsroot/cl-unification In directory clnet:/tmp/cvs-serv30753 Modified Files: unification.system Log Message: Added file 'apply-substitition.lisp' with a few new functions that are a start for the variable substitition operation. New fixes to the MATCH and MATCH-CASE macros. They should now work as advertised. Minor changes to other files: added exports to package file, fixed .system and .asd files. --- /project/cl-unification/cvsroot/cl-unification/unification.system 2004/11/17 22:19:55 1.1.1.1 +++ /project/cl-unification/cvsroot/cl-unification/unification.system 2007/05/21 12:29:24 1.2 @@ -7,6 +7,7 @@ "lambda-list-parsing" "templates-hierarchy" "unifier" - "match-block")) + "match-block" + "apply-substitution")) ;;; end of file -- unification.system --

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cl-unification-cvs May 2007