| /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| * Copyright (C) 2001 Gerwin Klein <lsf@jflex.de> * |
| * Copyright (C) 2001 Bernhard Rumpe <rumpe@in.tum.de> * |
| * All rights reserved. * |
| * * |
| * This program is free software; you can redistribute it and/or modify * |
| * it under the terms of the GNU General Public License. See the file * |
| * COPYRIGHT for more information. * |
| * * |
| * 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 * |
| * * |
| * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
| |
| |
| /** |
| * AST node for function application. |
| * |
| * Also contains pointer to declaration location of the function. |
| */ |
| class Tfun extends Texp implements AST { |
| Tident ident; // name of the function |
| Texplist explist; // parameter list |
| |
| public Tfun(Tident i, Texplist e) { |
| ident=i; |
| explist=e; |
| } |
| |
| public String toString() { |
| return ident+"("+explist+")"; |
| } |
| |
| public void checkcontext(SymTab st) { // CoCo (DefFun,Arity) |
| explist.checkcontext(st); |
| SymtabEntry ste = st.lookup(ident.toString()); |
| if (ste==null) |
| Main.error("function not defined: "+ident); |
| else if (ste.kind() != SymtabEntry.FUN) |
| Main.error("variable used as funktion: "+ident); |
| else if (((STEfun)ste).arity() != explist.length()) |
| Main.error("wrong arity at function call: "+ident); |
| } |
| |
| Tdekl fundekl; // pointer to location of function declaration |
| |
| // set pointers and indices |
| public void prepInterp(SymTab st) { |
| fundekl = ((STEfun)st.lookup(ident.toString())).getDekl(); |
| explist.prepInterp(st); |
| } |
| |
| public int interpret(int[] in, int[] par) { |
| int[] newparams = new int[fundekl.arity()]; |
| explist.interpret(in,par,newparams,0); |
| return fundekl.interpret(in,newparams); |
| } |
| } |
| |
| |