/* Part of XPCE --- The SWI-Prolog GUI toolkit Author: Jan Wielemaker and Anjo Anjewierden E-mail: jan@swi.psy.uva.nl WWW: http://www.swi.psy.uva.nl/projects/xpce/ Copyright (c) 1985-2002, University of Amsterdam All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #define INLINE_UTILITIES 1 #include status initialiseCode(Code c) { return initialiseProgramObject(c); } static Function getConvertCode(Class class, QuoteFunction q) { answer(q->function); } static status debugClassCode(Code c, Name cls) { if ( cls == NAME_user ) clearDFlag(c, D_SERVICE); else setDFlag(c, D_SERVICE); succeed; } static Name getDebugClassCode(Code c) { if ( onDFlag(c, D_SERVICE) ) return NAME_service; else return NAME_user; } /******************************** * FORWARDING * ********************************/ static status forwardVarsCodev(Code c, int argc, Assignment *argv) { status rval; int errors = 0; int i; withLocalVars({ for(i=0; ivalue)) ) { assignVar(argv[0]->var, value, NAME_local); if ( argv[0]->var == RECEIVER && isObject(value) ) assignVar(RECEIVER_CLASS, classOfObject(value), NAME_local); } else { errors++; break; } } rval = (errors ? FAIL : executeCode(c)); }); return rval; } /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - FORWARDING WITH PUSH OF @RECEIVER The test of `if ( RECEIVER->value != receiver )' is dubious: we should check whether the message actually is send to @receiver TBD: Seems we can throw away all the sendSuperObject() and related stuff using the XPCE 5 message passing code and only keep @receiver for messages in dialog items. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ status userForwardReceiverCodev(Code c, Any receiver, int argc, const Any argv[]) { Any receiver_save = RECEIVER->value; Any receiver_class_save = RECEIVER_CLASS->value; status rval; RECEIVER->value = receiver; RECEIVER_CLASS->value = classOfObject(receiver); rval = forwardCodev(c, argc, argv); RECEIVER_CLASS->value = receiver_class_save; RECEIVER->value = receiver_save; return rval; } status forwardReceiverCodev(Code c, Any receiver, int argc, const Any argv[]) { if ( RECEIVER->value != receiver ) return userForwardReceiverCodev(c, receiver, argc, argv); else return forwardCodev(c, argc, argv); } /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - VECTOR BASED FORWARDING - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ static status forwardVectorCodev(Code c, int argc, const Any argv[]) { Vector v; int shift; int args; if ( argc == 0 ) goto usage; if ( argc >= 2 && isInteger(argv[argc-1]) ) { v = argv[argc-2]; shift = valInt(argv[argc-1]); args = argc-2; } else { v = argv[argc-1]; shift = 0; args = argc-1; } if ( !instanceOfObject(v, ClassVector) ) goto usage; else { int argn = args+valInt(v->size)-shift; ArgVector(av, args+valInt(v->size)-shift); int i, n; for(i=0; isize); n++) av[i++] = v->elements[n]; return forwardCodev(c, argn, av); } usage: return errorPce(c, NAME_badVectorUsage); } /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ARGLIST CODE INVOKATION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ status forwardCode(Code c, ...) { va_list args; Any argv[VA_PCE_MAX_ARGS]; int argc; va_start(args, c); for(argc=0; (argv[argc] = va_arg(args, Any)) != NULL; argc++) assert(argc <= VA_PCE_MAX_ARGS); va_end(args); return forwardCodev(c, argc, argv); } status forwardReceiverCode(Code c, Any rec, ...) { va_list args; Any argv[VA_PCE_MAX_ARGS]; int argc; va_start(args, rec); for(argc=0; (argv[argc] = va_arg(args, Any)) != NULL; argc++) assert(argc <= VA_PCE_MAX_ARGS); va_end(args); return forwardReceiverCodev(c, rec, argc, argv); } static status ExecuteCode(Code c) { Class cl = classOfObject(c); FixGetFunctionClass(cl, NAME_Execute); if ( cl->get_function ) { status rval; if ( onDFlag(c, D_SERVICE) ) { ServiceMode(PCE_EXEC_SERVICE, rval = ((*cl->get_function)((Function)c) ? SUCCEED : FAIL)); } else rval = (*cl->get_function)((Function)c) ? SUCCEED : FAIL; return rval; } return errorPce(c, NAME_cannotExecute); } static Any getExecuteCode(Code c) { errorPce(c, NAME_noFunction); fail; } /******************************** * CLASS CODE_VECTOR * ********************************/ Vector createCodeVectorv(int argc, const Any argv[]) { Vector v = alloc(sizeof(struct vector)); int n; initHeaderObj(v, ClassCodeVector); v->offset = ZERO; v->size = toInt(argc); v->allocated = v->size; v->elements = alloc(argc * sizeof(Any)); for(n=0; n < argc; n++) { v->elements[n] = argv[n]; if ( isObject(argv[n]) && !isProtectedObj(argv[n]) ) addRefObj(argv[n]); } clearCreatingObj(v); return v; } static Vector getConvertCodeVector(Any ctx, Any in) { if ( in == name_nil ) answer(createCodeVectorv(0, NULL)); fail; } static status unlinkCodeVector(Vector v) { if ( v->elements != NULL ) { int size = valInt(v->size); int n; Any *argv = v->elements; for(n=0; nallocated)*sizeof(Any), v->elements); v->elements = NULL; } succeed; } void doneCodeVector(Vector v) { if ( isVirginObj(v) ) { unlinkCodeVector(v); unalloc(sizeof(struct vector), v); } } /******************************* * CLASS DECLARATION * *******************************/ /* Type declarations */ static char *T_element[] = { "index=int", "value=any|function" }; static char *T_fill[] = { "value=any|function", "from=[int]", "to=[int]" }; /* Instance Variables */ #define var_codeVector NULL /* static vardecl var_codeVector[] = { }; */ /* Send Methods */ static senddecl send_codeVector[] = { SM(NAME_append, 1, "value=any|function ...", appendVector, DEFAULT, NULL), SM(NAME_element, 2, T_element, elementVector, DEFAULT, NULL), SM(NAME_fill, 3, T_fill, fillVector, DEFAULT, NULL), SM(NAME_initialise, 1, "element=any|function ...", initialiseVectorv, DEFAULT, NULL), SM(NAME_unlink, 0, NULL, unlinkCodeVector, DEFAULT, NULL) }; /* Get Methods */ static getdecl get_codeVector[] = { GM(NAME_convert, 1, "code_vector", "any", getConvertCodeVector, DEFAULT, "Convert [] into empty code-vector"), }; /* Resources */ #define rc_codeVector NULL /* static classvardecl rc_codeVector[] = { }; */ /* Class Declaration */ ClassDecl(codeVector_decls, var_codeVector, send_codeVector, get_codeVector, rc_codeVector, ARGC_INHERIT, NULL, "$Rev$"); status makeClassCodeVector(Class class) { declareClass(class, &codeVector_decls); assign(class, un_answer, OFF); assign(class, summary, CtoString("Argument vector")); succeed; } /******************************* * CLASS DECLARATION * *******************************/ /* Type declarations */ static char *T_fwdrec[] = { "receiver=any", "any ..." }; /* Instance Variables */ #define var_code NULL /* static vardecl var_code[] = { }; */ /* Send Methods */ static senddecl send_code[] = { SM(NAME_execute, 0, NULL, executeCode, NAME_execute, "Execute code"), SM(NAME_forward, 1, "any ...", forwardCodev, NAME_execute, "Push @arg1, ... and execute"), SM(NAME_forwardVars, 1, "assign ...", forwardVarsCodev, NAME_execute, "Push vars and execute"), SM(NAME_forwardVector, 1, "any ...", forwardVectorCodev, NAME_execute, "Push @arg1, ... from a vector and execute"), SM(NAME_forwardReceiver, 2, T_fwdrec, userForwardReceiverCodev, NAME_execute, "Push @receiver, @arg1, ... and execute"), SM(NAME_Execute, 0, NULL, ExecuteCode, NAME_internal, "Execute the code object (redefined)"), SM(NAME_debugClass, 1, "{user,service}", debugClassCode, NAME_debugging, "Specify debug-capabilities") }; /* Get Methods */ static getdecl get_code[] = { GM(NAME_Execute, 0, "unchecked", NULL, getExecuteCode, NAME_internal, "Execute the function object (error)"), GM(NAME_convert, 1, "function", "quote=quote_function", getConvertCode, DEFAULT, "Convert quoted function to value quoted"), GM(NAME_debugClass, 0, "{user,service}", NULL, getDebugClassCode, NAME_debugging, "Specify debug-capabilities") }; /* Resources */ #define rc_code NULL /* static classvardecl rc_code[] = { }; */ /* Class Declaration */ ClassDecl(code_decls, var_code, send_code, get_code, rc_code, 0, NULL, "$Rev$"); status makeClassCode(Class class) { declareClass(class, &code_decls); cloneStyleClass(class, NAME_none); assign(class, un_answer, OFF); succeed; }