--- /dev/null
+/************************************************************************
+ ************************************************************************
+ FAUST compiler
+ Copyright (C) 2003-2004 GRAME, Centre National de Creation Musicale
+ ---------------------------------------------------------------------
+ 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ ************************************************************************
+ ************************************************************************/
+
+
+
+/*****************************************************************************
+******************************************************************************
+
+
+ The Box Language
+
+
+******************************************************************************
+*****************************************************************************/
+
+
+/**\file boxes.cpp
+ * \author Yann Orlarey
+ * \version 1.0
+ * \date 2003
+ * \brief Implementation of block diagram expressions.
+ * Boxes are created using five main connection operations : sequential (:),
+ * parallel (,), split (<:), merge (:>), and recursive (~).
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include "boxes.hh"
+#include "ppbox.hh"
+#include "prim2.hh"
+#include "xtended.hh"
+
+
+/*****************************************************************************
+ Identifiers
+*****************************************************************************/
+Sym BOXIDENT = symbol ("BoxIdent");
+
+Tree boxIdent(const char* name) { return tree(BOXIDENT, tree(symbol(name)) ); }
+bool isBoxIdent(Tree t) { return t->node() == Node(BOXIDENT); }
+bool isBoxIdent(Tree t0, const char** str)
+{
+ Tree t1; Sym s;
+ if ( isTree(t0, BOXIDENT, t1) && isSym(t1->node(), &s) ) {
+ *str = name(s);
+ return true;
+ } else {
+ return false;
+ }
+}
+
+
+/*****************************************************************************
+ Numbers
+*****************************************************************************/
+
+Tree boxInt(int n) { return tree(n); }
+Tree boxReal(double n) { return tree(n); }
+
+bool isBoxInt(Tree t) { return isInt(t->node()); }
+bool isBoxReal(Tree t) { return isDouble(t->node()); }
+
+bool isBoxInt(Tree t, int* i) { return isInt(t->node(), i); }
+bool isBoxReal(Tree t, double* r) { return isDouble(t->node(), r); }
+
+
+/*****************************************************************************
+ Wire and Cut
+*****************************************************************************/
+
+Sym BOXCUT = symbol ("BoxCut");
+Tree boxCut() { return tree(BOXCUT); }
+bool isBoxCut(Tree t) { return isTree(t, BOXCUT); }
+
+Sym BOXWIRE = symbol ("BoxWire");
+Tree boxWire() { return tree(BOXWIRE); }
+bool isBoxWire(Tree t) { return isTree(t, BOXWIRE); }
+
+
+/*****************************************************************************
+ Symbolic Boxes with symbolic slots
+*****************************************************************************/
+
+Sym BOXSLOT = symbol ("BoxSlot");
+
+Tree boxSlot(int id) { return tree(BOXSLOT,tree(id)); }
+bool isBoxSlot(Tree t) { Tree w; return isTree(t, BOXSLOT,w); }
+bool isBoxSlot(Tree t, int* id) { Tree w; return isTree(t, BOXSLOT,w) && isInt(w->node(),id); }
+
+
+Sym BOXSYMBOLIC = symbol ("BoxSymbolic");
+
+Tree boxSymbolic(Tree slot, Tree body) { return tree(BOXSYMBOLIC,slot, body); }
+bool isBoxSymbolic(Tree t) { Tree slot, body; return isTree(t, BOXSYMBOLIC, slot, body); }
+bool isBoxSymbolic(Tree t, Tree& slot, Tree& body) { return isTree(t, BOXSYMBOLIC, slot, body); }
+
+
+/*****************************************************************************
+ Composition of Boxes
+*****************************************************************************/
+
+Sym BOXSEQ = symbol ("BoxSeq");
+Tree boxSeq(Tree x, Tree y) { return tree(BOXSEQ, x, y); }
+bool isBoxSeq(Tree t, Tree& x, Tree& y) { return isTree(t, BOXSEQ, x, y); }
+
+Sym BOXPAR = symbol ("BoxPar");
+Tree boxPar(Tree x, Tree y) { return tree(BOXPAR, x, y); }
+bool isBoxPar(Tree t, Tree& x, Tree& y) { return isTree(t, BOXPAR, x, y); }
+
+Sym BOXREC = symbol ("BoxRec");
+Tree boxRec(Tree x, Tree y) { return tree(BOXREC, x, y); }
+bool isBoxRec(Tree t, Tree& x, Tree& y) { return isTree(t, BOXREC, x, y); }
+
+Sym BOXSPLIT = symbol ("BoxSplit");
+Tree boxSplit(Tree x, Tree y) { return tree(BOXSPLIT, x, y); }
+bool isBoxSplit(Tree t, Tree& x, Tree& y) { return isTree(t, BOXSPLIT, x, y); }
+
+Sym BOXMERGE = symbol ("BoxMerge");
+Tree boxMerge(Tree x, Tree y) { return tree(BOXMERGE, x, y); }
+bool isBoxMerge(Tree t, Tree& x, Tree& y) { return isTree(t, BOXMERGE, x, y); }
+
+
+/*****************************************************************************
+ Algorithmic Composition of Boxes
+*****************************************************************************/
+
+Sym BOXIPAR = symbol ("BoxIPar");
+Sym BOXISEQ = symbol ("BoxISeq");
+Sym BOXISUM = symbol ("BoxISum");
+Sym BOXIPROD = symbol ("BoxIProd");
+
+Tree boxIPar(Tree x, Tree y, Tree z) { return tree(BOXIPAR, x, y, z); }
+Tree boxISeq(Tree x, Tree y, Tree z) { return tree(BOXISEQ, x, y, z); }
+Tree boxISum(Tree x, Tree y, Tree z) { return tree(BOXISUM, x, y, z); }
+Tree boxIProd(Tree x, Tree y, Tree z) { return tree(BOXIPROD, x, y, z); }
+
+bool isBoxIPar(Tree t, Tree& x, Tree& y, Tree& z) { return isTree(t, BOXIPAR, x, y, z); }
+bool isBoxISeq(Tree t, Tree& x, Tree& y, Tree& z) { return isTree(t, BOXISEQ, x, y, z); }
+bool isBoxISum(Tree t, Tree& x, Tree& y, Tree& z) { return isTree(t, BOXISUM, x, y, z); }
+bool isBoxIProd(Tree t, Tree& x, Tree& y, Tree& z) { return isTree(t, BOXIPROD, x, y, z); }
+
+
+
+/*****************************************************************************
+ Lambda-Calculus of Boxes
+*****************************************************************************/
+Sym BOXABSTR = symbol ("BoxAbstr");
+Sym BOXAPPL = symbol ("BoxAppl");
+Sym CLOSURE = symbol ("Closure");
+Sym BOXERROR = symbol ("BoxError");
+Sym BOXACCESS = symbol ("BoxAccess");
+
+Tree boxAbstr (Tree x, Tree y) { return tree(BOXABSTR, x, y); }
+Tree boxAppl (Tree x, Tree y) { return tree(BOXAPPL, x, y); }
+
+bool isBoxAbstr (Tree t) { return t->node() == Node(BOXABSTR); }
+bool isBoxAppl (Tree t) { return t->node() == Node(BOXAPPL); }
+
+bool isBoxAbstr (Tree t, Tree& x, Tree& y) { return isTree(t, BOXABSTR, x, y); }
+bool isBoxAppl (Tree t, Tree& x, Tree& y) { return isTree(t, BOXAPPL, x, y); }
+
+Tree buildBoxAbstr (Tree largs, Tree body)
+{
+ if (isNil(largs)) {
+ return body;
+ } else {
+ return buildBoxAbstr(tl(largs), boxAbstr(hd(largs), body));
+ }
+}
+#if 0
+Tree buildBoxAppl (Tree fun, Tree revarglist)
+{
+ if (isNil(revarglist)) {
+ return fun;
+ } else {
+ return boxAppl(buildBoxAppl(fun, tl(revarglist)), hd(revarglist));
+ }
+}
+#else
+Tree buildBoxAppl (Tree fun, Tree revarglist)
+{
+ if (isNil (revarglist)) exit(1); // a revoir !!!!!!
+ return boxAppl(fun, revarglist);
+}
+#endif
+
+Tree closure (Tree abstr, Tree genv, Tree vis, Tree lenv)
+{
+ return tree(CLOSURE, abstr, genv, vis, lenv);
+}
+
+bool isClosure (Tree t, Tree& abstr, Tree& genv, Tree& vis, Tree& lenv)
+{
+ return isTree(t, CLOSURE, abstr, genv, vis, lenv);
+}
+
+Tree boxError()
+{
+ return tree(BOXERROR);
+}
+
+bool isBoxError(Tree t)
+{
+ return isTree(t, BOXERROR);
+}
+
+
+Tree boxAccess (Tree exp, Tree id) { return tree(BOXACCESS, exp, id); }
+bool isBoxAccess(Tree t, Tree& exp, Tree& id) { return isTree(t, BOXACCESS, exp, id); }
+
+
+/*****************************************************************************
+ Boxes with local definitions
+*****************************************************************************/
+Sym BOXWITHLOCALDEF = symbol ("BoxWithLocalDef");
+
+Tree boxWithLocalDef (Tree body, Tree ldef) { return tree(BOXWITHLOCALDEF, body, ldef); }
+bool isBoxWithLocalDef (Tree t, Tree& body, Tree& ldef) { return isTree(t, BOXWITHLOCALDEF, body, ldef); }
+
+
+/*****************************************************************************
+ Boxes modif local definitions
+*****************************************************************************/
+Sym BOXMODIFLOCALDEF = symbol ("BoxModifLocalDef");
+
+
+Tree boxModifLocalDef (Tree body, Tree ldef) { return tree(BOXMODIFLOCALDEF, body, ldef); }
+bool isBoxModifLocalDef (Tree t, Tree& body, Tree& ldef) { return isTree(t, BOXMODIFLOCALDEF, body, ldef); }
+
+
+/*****************************************************************************
+ Modules
+*****************************************************************************/
+
+Sym BOXENVIRONMENT = symbol ("BoxEnvironment");
+
+Tree boxEnvironment () { return tree(BOXENVIRONMENT); }
+bool isBoxEnvironment (Tree s) { return isTree(s, BOXENVIRONMENT); }
+
+Sym BOXCOMPONENT = symbol ("BoxComponent");
+
+Tree boxComponent (Tree filename) { return tree(BOXCOMPONENT, filename); }
+bool isBoxComponent (Tree s, Tree& filename) { return isTree(s, BOXCOMPONENT, filename); }
+
+Sym BOXLIBRARY = symbol ("BoxLibrary");
+
+Tree boxLibrary (Tree filename) { return tree(BOXLIBRARY, filename); }
+bool isBoxLibrary (Tree s, Tree& filename) { return isTree(s, BOXLIBRARY, filename); }
+
+
+Sym IMPORTFILE = symbol ("ImportFile");
+
+Tree importFile(Tree filename) { return tree(IMPORTFILE, filename); }
+bool isImportFile(Tree s, Tree& filename) { return isTree(s, IMPORTFILE, filename); }
+
+
+/*****************************************************************************
+ External Primitive Boxes (n -> 1)
+*****************************************************************************/
+
+Sym BOXPRIM0 = symbol ("BoxPrim0");
+Tree boxPrim0(prim0 foo) { return tree(BOXPRIM0, tree((void*)foo)); }
+bool isBoxPrim0 (Tree s) { Tree t; return isTree(s, BOXPRIM0, t); }
+bool isBoxPrim0 (Tree s, prim0* p) { Tree t; return isTree(s, BOXPRIM0, t) && isPointer(t->node(),(void**)p); }
+
+Sym BOXPRIM1 = symbol ("BoxPrim1");
+Tree boxPrim1(prim1 foo) { return tree(BOXPRIM1, tree((void*)foo)); }
+bool isBoxPrim1 (Tree s) { Tree t; return isTree(s, BOXPRIM1, t); }
+bool isBoxPrim1 (Tree s, prim1* p) { Tree t; return isTree(s, BOXPRIM1, t) && isPointer(t->node(),(void**)p); }
+
+Sym BOXPRIM2 = symbol ("BoxPrim2");
+Tree boxPrim2(prim2 foo) { return tree(BOXPRIM2, tree((void*)foo)); }
+bool isBoxPrim2 (Tree s) { Tree t; return isTree(s, BOXPRIM2, t); }
+bool isBoxPrim2 (Tree s, prim2* p) { Tree t; return isTree(s, BOXPRIM2, t) && isPointer(t->node(),(void**)p); }
+
+Sym BOXPRIM3 = symbol ("BoxPrim3");
+Tree boxPrim3(prim3 foo) { return tree(BOXPRIM3, tree((void*)foo)); }
+bool isBoxPrim3 (Tree s) { Tree t; return isTree(s, BOXPRIM3, t); }
+bool isBoxPrim3 (Tree s, prim3* p) { Tree t; return isTree(s, BOXPRIM3, t) && isPointer(t->node(),(void**)p); }
+
+Sym BOXPRIM4 = symbol ("BoxPrim4");
+Tree boxPrim4(prim4 foo) { return tree(BOXPRIM4, tree((void*)foo)); }
+bool isBoxPrim4 (Tree s) { Tree t; return isTree(s, BOXPRIM4, t); }
+bool isBoxPrim4 (Tree s, prim4* p) { Tree t; return isTree(s, BOXPRIM4, t) && isPointer(t->node(),(void**)p); }
+
+Sym BOXPRIM5 = symbol ("BoxPrim5");
+Tree boxPrim5(prim5 foo) { return tree(BOXPRIM5, tree((void*)foo)); }
+bool isBoxPrim5 (Tree s) { Tree t; return isTree(s, BOXPRIM5, t); }
+bool isBoxPrim5 (Tree s, prim5* p) { Tree t; return isTree(s, BOXPRIM5, t) && isPointer(t->node(),(void**)p); }
+
+/*****************************************************************************
+ Foreign Functions
+*****************************************************************************/
+
+Sym BOXFFUN = symbol ("BoxFFun");
+Tree boxFFun (Tree ff) { return tree(BOXFFUN, ff); }
+bool isBoxFFun (Tree s) { Tree ff; return isTree(s, BOXFFUN, ff); }
+bool isBoxFFun (Tree s, Tree& ff) { return isTree(s, BOXFFUN, ff); }
+
+
+Sym BOXFCONST = symbol ("BoxFConst");
+Tree boxFConst (Tree type, Tree name, Tree file) { return tree(BOXFCONST, type, name, file); }
+bool isBoxFConst (Tree s) { Tree t,n,f; return isTree(s, BOXFCONST, t, n, f); }
+bool isBoxFConst (Tree s, Tree& type, Tree& name, Tree& file) { return isTree(s, BOXFCONST,type, name, file); }
+
+
+Sym BOXFVAR = symbol ("BoxFVar");
+Tree boxFVar (Tree type, Tree name, Tree file) { return tree(BOXFVAR, type, name, file); }
+bool isBoxFVar (Tree s) { Tree t,n,f; return isTree(s, BOXFVAR, t, n, f); }
+bool isBoxFVar (Tree s, Tree& type, Tree& name, Tree& file) { return isTree(s, BOXFVAR,type, name, file); }
+
+
+/*****************************************************************************
+ User Interface Elements
+*****************************************************************************/
+
+Sym BOXBUTTON = symbol ("BoxButton");
+Tree boxButton (Tree lbl) { return tree(BOXBUTTON, lbl); }
+bool isBoxButton (Tree s) { Tree lbl; return isTree(s, BOXBUTTON, lbl); }
+bool isBoxButton (Tree s, Tree& lbl) { return isTree(s, BOXBUTTON, lbl); }
+
+
+Sym BOXCHECKBOX = symbol ("BoxCheckbox");
+Tree boxCheckbox (Tree lbl) { return tree(BOXCHECKBOX, lbl); }
+bool isBoxCheckbox (Tree s) { Tree lbl; return isTree(s, BOXCHECKBOX, lbl); }
+bool isBoxCheckbox (Tree s, Tree& lbl) { return isTree(s, BOXCHECKBOX, lbl); }
+
+
+Sym BOXHSLIDER = symbol ("BoxHSlider");
+Tree boxHSlider (Tree lbl, Tree cur, Tree min, Tree max, Tree step)
+ { return tree(BOXHSLIDER, lbl, list4(cur,min,max,step)); }
+bool isBoxHSlider (Tree s) { Tree lbl, params; return isTree(s, BOXHSLIDER, lbl, params); }
+
+bool isBoxHSlider (Tree s, Tree& lbl, Tree& cur, Tree& min, Tree& max, Tree& step)
+{
+ Tree params;
+ if (isTree(s, BOXHSLIDER, lbl, params)) {
+ cur = nth(params, 0);
+ min = nth(params, 1);
+ max = nth(params, 2);
+ step= nth(params, 3);
+ return true;
+ } else {
+ return false;
+ }
+}
+
+
+Sym BOXVSLIDER = symbol ("BoxVSlider");
+Tree boxVSlider (Tree lbl, Tree cur, Tree min, Tree max, Tree step)
+ { return tree(BOXVSLIDER, lbl, list4(cur,min,max,step)); }
+bool isBoxVSlider (Tree s) { Tree lbl, params; return isTree(s, BOXVSLIDER, lbl, params); }
+
+bool isBoxVSlider (Tree s, Tree& lbl, Tree& cur, Tree& min, Tree& max, Tree& step)
+{
+ Tree params;
+ if (isTree(s, BOXVSLIDER, lbl, params)) {
+ cur = nth(params, 0);
+ min = nth(params, 1);
+ max = nth(params, 2);
+ step= nth(params, 3);
+ return true;
+ } else {
+ return false;
+ }
+}
+
+Sym BOXNUMENTRY = symbol ("BoxNumEntry");
+Tree boxNumEntry (Tree lbl, Tree cur, Tree min, Tree max, Tree step)
+ { return tree(BOXNUMENTRY, lbl, list4(cur,min,max,step)); }
+bool isBoxNumEntry (Tree s) { Tree lbl, params; return isTree(s, BOXNUMENTRY, lbl, params); }
+
+bool isBoxNumEntry (Tree s, Tree& lbl, Tree& cur, Tree& min, Tree& max, Tree& step)
+{
+ Tree params;
+ if (isTree(s, BOXNUMENTRY, lbl, params)) {
+ cur = nth(params, 0);
+ min = nth(params, 1);
+ max = nth(params, 2);
+ step= nth(params, 3);
+ return true;
+ } else {
+ return false;
+ }
+}
+
+
+Sym BOXHGROUP = symbol ("BoxHGroup");
+Tree boxHGroup (Tree lbl, Tree x) { return tree(BOXHGROUP, lbl, x); }
+bool isBoxHGroup (Tree s) { Tree lbl, x; return isTree(s, BOXHGROUP, lbl, x); }
+bool isBoxHGroup (Tree s, Tree& lbl, Tree& x) { return isTree(s, BOXHGROUP, lbl, x); }
+
+
+Sym BOXVGROUP = symbol ("BoxVGroup");
+Tree boxVGroup (Tree lbl, Tree x) { return tree(BOXVGROUP, lbl, x); }
+bool isBoxVGroup (Tree s) { Tree lbl, x; return isTree(s, BOXVGROUP, lbl, x); }
+bool isBoxVGroup (Tree s, Tree& lbl, Tree& x) { return isTree(s, BOXVGROUP, lbl, x); }
+
+
+Sym BOXTGROUP = symbol ("BoxTGroup");
+Tree boxTGroup (Tree lbl, Tree x) { return tree(BOXTGROUP, lbl, x); }
+bool isBoxTGroup (Tree s) { Tree lbl, x; return isTree(s, BOXTGROUP, lbl, x); }
+bool isBoxTGroup (Tree s, Tree& lbl, Tree& x) { return isTree(s, BOXTGROUP, lbl, x); }
+
+
+Sym BOXHBARGRAPH = symbol ("BoxHBargraph");
+Tree boxHBargraph(Tree lbl, Tree min, Tree max) { return tree(BOXHBARGRAPH, lbl, min, max); }
+bool isBoxHBargraph (Tree s) { Tree lbl, min, max; return isTree(s, BOXHBARGRAPH, lbl, min, max); }
+bool isBoxHBargraph (Tree s, Tree& lbl, Tree& min, Tree& max) { return isTree(s, BOXHBARGRAPH, lbl, min, max); }
+
+
+Sym BOXVBARGRAPH = symbol ("BoxVBargraph");
+Tree boxVBargraph(Tree lbl, Tree min, Tree max) { return tree(BOXVBARGRAPH, lbl, min, max); }
+bool isBoxVBargraph (Tree s) { Tree lbl, min, max; return isTree(s, BOXVBARGRAPH, lbl, min, max); }
+bool isBoxVBargraph (Tree s, Tree& lbl, Tree& min, Tree& max) { return isTree(s, BOXVBARGRAPH, lbl, min, max); }
+
+
+/*****************************************************************************
+ pattern lmatching case
+*****************************************************************************/
+
+Sym BOXCASE = symbol ("BoxCase");
+Sym BOXPATMATCHER = symbol ("BoxPatMatcher");
+Sym BOXPATVAR = symbol ("BoxPatVar");
+
+/**
+ * Prepare a "pattern" by replacing variables x by special
+ * pattern variables ?x.
+ *
+ * P[x] -> ?x
+ * P[x(e)] -> x(P[e])
+ * P[e(f)] -> P[e](P[f])
+ * P[e:f] -> P[e]:P[f]
+ * etc.
+ */
+static Tree preparePattern(Tree box)
+{
+// cerr << "preparePattern(" << boxpp(box) << ")" << endl;
+
+ int id;
+ double r;
+ prim0 p0;
+ prim1 p1;
+ prim2 p2;
+ prim3 p3;
+ prim4 p4;
+ prim5 p5;
+
+ Tree t1, t2, t3, ff, label, cur, min, max, step, type, name, file, arg,
+ body, fun, args, ldef, slot,
+ ident, rules;
+
+ xtended* xt = (xtended*) getUserData(box);
+
+
+ // primitive elements
+ if (xt) return box;
+ else if (isBoxIdent(box)) return boxPatternVar(box);
+ else if (isBoxAppl(box, fun, args)) {
+ if (isBoxIdent(fun)) return boxAppl( fun, lmap(preparePattern,args));
+ else return boxAppl( preparePattern(fun), lmap(preparePattern,args));
+ }
+ else if (isBoxAbstr(box,arg,body)) return box;
+ else if (isBoxInt(box)) return box;
+ else if (isBoxReal(box, &r)) return box;
+ else if (isBoxCut(box)) return box;
+ else if (isBoxWire(box)) return box;
+ else if (isBoxPrim0(box, &p0)) return box;
+ else if (isBoxPrim1(box, &p1)) return box;
+ else if (isBoxPrim2(box, &p2)) return box;
+ else if (isBoxPrim3(box, &p3)) return box;
+ else if (isBoxPrim4(box, &p4)) return box;
+ else if (isBoxPrim5(box, &p5)) return box;
+
+ else if (isBoxWithLocalDef(box, body, ldef)) return boxWithLocalDef(preparePattern(body), ldef);
+
+
+ // foreign elements
+ else if (isBoxFFun(box, ff)) return box;
+ else if (isBoxFConst(box, type, name, file))
+ return box;
+ else if (isBoxFVar(box, type, name, file))
+ return box;
+
+ // block diagram binary operator
+ else if (isBoxSeq(box, t1, t2)) return boxSeq( preparePattern(t1), preparePattern(t2) );
+ else if (isBoxSplit(box, t1, t2)) return boxSplit( preparePattern(t1), preparePattern(t2) );
+ else if (isBoxMerge(box, t1, t2)) return boxMerge( preparePattern(t1), preparePattern(t2) );
+ else if (isBoxPar(box, t1, t2)) return boxPar( preparePattern(t1), preparePattern(t2) );
+ else if (isBoxRec(box, t1, t2)) return boxRec( preparePattern(t1), preparePattern(t2) );
+
+ // iterative block diagram construction
+ else if (isBoxIPar(box, t1, t2, t3)) return boxIPar ( t1, t2, preparePattern(t3) );
+ else if (isBoxISeq(box, t1, t2, t3)) return boxISeq ( t1, t2, preparePattern(t3) );
+ else if (isBoxISum(box, t1, t2, t3)) return boxISum ( t1, t2, preparePattern(t3) );
+ else if (isBoxIProd(box, t1, t2, t3)) return boxIProd( t1, t2, preparePattern(t3) );
+
+ // user interface
+ else if (isBoxButton(box, label)) return box;
+ else if (isBoxCheckbox(box, label)) return box;
+
+ else if (isBoxVSlider(box, label, cur, min, max, step)) return box;
+ else if (isBoxHSlider(box, label, cur, min, max, step)) return box;
+
+ else if (isBoxVGroup(box, label, t1)) return boxVGroup(label, preparePattern(t1));
+ else if (isBoxHGroup(box, label, t1)) return boxHGroup(label, preparePattern(t1));
+ else if (isBoxTGroup(box, label, t1)) return boxTGroup(label, preparePattern(t1));
+
+ else if (isBoxHBargraph(box, label, min, max)) return box;
+ else if (isBoxVBargraph(box, label, min, max)) return box;
+ else if (isBoxNumEntry(box, label, cur, min, max, step)) return box;
+
+ else if (isNil(box)) return box;
+ else if (isList(box)) return lmap(preparePattern, box);
+ else if (isBoxEnvironment(box)) return box;
+ /* not expected
+ else if (isClosure(box, abstr, genv, vis, lenv)) {
+ fout << "closure[" << boxpp(abstr)
+ << ", genv = " << envpp(genv)
+ << ", lenv = " << envpp(lenv)
+ << "]";
+ }
+ */
+ else if (isBoxComponent(box, label)) return box;
+ else if (isBoxAccess(box, t1, t2)) return box;
+
+ /* not expected
+ else if (isImportFile(box, label)) {
+ fout << "import("
+ << tree2str(label) << ')';
+ }
+ */
+
+
+ else if (isBoxSlot(box, &id)) return box;
+ else if (isBoxSymbolic(box, slot, body)) return box;
+
+ // Pattern Matching Extensions
+ else if (isBoxCase(box, rules)) return box;
+ else if (isBoxPatternVar(box, ident)) return box;
+
+
+ // None of the previous tests succeded, then it is not a valid box
+ else {
+ cerr << "Error in preparePattern() : " << *box << " is not a valid box" << endl;
+ exit(1);
+ }
+
+
+ return box;
+}
+
+static Tree prepareRule(Tree rule)
+{
+ return cons (lmap(preparePattern,hd(rule)), tl(rule));
+}
+
+static Tree prepareRules(Tree rules) {
+ return lmap(prepareRule, rules);
+}
+
+Tree boxCaseInternal (Tree rules) { return tree(BOXCASE, rules); }
+Tree boxCase (Tree rules) { return boxCaseInternal(prepareRules(rules)); }
+
+bool isBoxCase (Tree s) { Tree rules; return isTree(s, BOXCASE, rules); }
+bool isBoxCase (Tree s, Tree& rules) { return isTree(s, BOXCASE, rules); }
+
+
+Tree boxPatternVar (Tree id) { return tree(BOXPATVAR, id); }
+bool isBoxPatternVar(Tree s, Tree& id) { return isTree(s, BOXPATVAR, id); }
+
+
+Tree boxPatternMatcher (Automaton* a, int state, Tree env, Tree origRules, Tree revParamList)
+{
+ return tree(BOXPATMATCHER, tree((void*)a), tree(state), env, origRules, revParamList);
+}
+
+bool isBoxPatternMatcher (Tree s)
+{
+ Tree ta, ts, env, orig, rpl;
+ return isTree(s, BOXPATMATCHER, ta, ts, env, orig, rpl);
+}
+
+bool isBoxPatternMatcher (Tree s, Automaton*& a, int& state, Tree& env, Tree& origRules, Tree& revParamList)
+{
+ Tree ta, ts;
+ if (isTree(s, BOXPATMATCHER, ta, ts, env, origRules, revParamList)) {
+ a = (Automaton*)tree2ptr(ta);
+ state = tree2int(ts);
+ return true;
+ } else {
+ return false;
+ }
+}
+
+