/*
* @(#) $(JCGO)/jtrsrc/com/ivmaisoft/jcgo/MethodProxy.java --
* a part of JCGO translator.
**
* Project: JCGO (http://www.ivmaisoft.com/jcgo/)
* Copyright (C) 2001-2012 Ivan Maidanski <ivmai@mail.ru>
* All rights reserved.
*/
/*
* This 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, or (at your option)
* any later version.
**
* This software 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 (GPL) for more details.
**
* Linking this library statically or dynamically with other modules is
* making a combined work based on this library. Thus, the terms and
* conditions of the GNU General Public License cover the whole
* combination.
**
* As a special exception, the copyright holders of this library give you
* permission to link this library with independent modules to produce an
* executable, regardless of the license terms of these independent
* modules, and to copy and distribute the resulting executable under
* terms of your choice, provided that you also meet, for each linked
* independent module, the terms and conditions of the license of that
* module. An independent module is a module which is not derived from
* or based on this library. If you modify this library, you may extend
* this exception to your version of the library, but you are not
* obligated to do so. If you do not wish to do so, delete this
* exception statement from your version.
*/
package com.ivmaisoft.jcgo;
import java.util.Enumeration;
/**
* A proxy function generator for reflected methods.
*/
final class MethodProxy {
private MethodDefinition md;
private String csign;
MethodProxy(MethodDefinition md) {
this.md = md;
StringBuffer sb = new StringBuffer();
int s0 = md.exprType().objectSize();
sb.append(Type.sig[s0 < Type.CLASSINTERFACE ? s0 : Type.CLASSINTERFACE]);
if (!md.isClassMethod()) {
sb.append('T');
}
Enumeration en = md.methodSignature().elements();
while (en.hasMoreElements()) {
s0 = ((ExpressionType) en.nextElement()).objectSize();
sb.append(Type.sig[s0 < Type.CLASSINTERFACE ? s0
: Type.CLASSINTERFACE]);
}
csign = sb.toString();
}
String csign() {
return csign;
}
String stringOutput() {
return "jcgo_mproxy_" + csign;
}
void processOutput(OutputContext oc) {
oc.cAndHPrint("JCGO_NOSEP_STATIC ");
oc.cAndHPrint(Type.cName[Type.CLASSINTERFACE]);
oc.cAndHPrint(" CFASTCALL\n");
oc.cAndHPrint("jcgo_mproxy_");
oc.cAndHPrint(csign);
oc.cAndHPrint("( ");
oc.cAndHPrint(Type.cName[Type.VOID]);
oc.cAndHPrint(" (CFASTCALL *jmethod)( ");
oc.cAndHPrint(Type.cName[Type.VOID]);
oc.cAndHPrint(" ), ");
oc.cAndHPrint(Type.cName[Type.CLASSINTERFACE]);
oc.cAndHPrint(" obj, ");
for (int type = Type.INT; type <= Type.DOUBLE; type++) {
oc.cAndHPrint(Type.cName[type + Type.CLASSINTERFACE]);
oc.cAndHPrint(" ");
oc.cAndHPrint(Type.name[type]);
oc.cAndHPrint("Args, ");
}
oc.cAndHPrint(Type.cName[Type.OBJECTARRAY]);
oc.cAndHPrint(" objectArgs )");
oc.hPrint(";\n\n");
oc.cPrint("{");
ExpressionType resType = md.exprType();
int s0 = resType.objectSize();
if (s0 < Type.CLASSINTERFACE) {
if (s0 != Type.VOID) {
oc.cPrint("JCGO_ARR_INTERNALACC(");
oc.cPrint(Type.cName[s0 > Type.INT ? s0 : Type.INT]);
oc.cPrint(", ");
oc.cPrint(Type.name[s0 > Type.INT ? s0 : Type.INT]);
oc.cPrint("Args, 0)= ");
if (s0 == Type.CHAR) {
oc.cPrint("(");
oc.cPrint(Type.cName[Type.INT]);
oc.cPrint(")");
}
}
oc.cPrint("((");
oc.cPrint(Type.cName[s0]);
} else {
oc.cPrint("return ((");
oc.cPrint(Type.cName[Type.CLASSINTERFACE]);
}
oc.cPrint(" (CFASTCALL*)( ");
boolean next = false;
if (!md.isClassMethod()) {
oc.cPrint(Type.cName[Type.CLASSINTERFACE]);
next = true;
}
MethodSignature msig = null;
if (md.hasParameters()) {
msig = md.methodSignature();
int type = Type.VOID;
do {
int type2 = type == Type.LONG ? Type.FLOAT
: type == Type.FLOAT ? Type.LONG : type;
Enumeration en = msig.elements();
while (en.hasMoreElements()) {
int s = ((ExpressionType) en.nextElement()).objectSize();
if (type2 == s
|| (type == Type.VOID && s >= Type.CLASSINTERFACE)) {
if (next) {
oc.cPrint(", ");
}
oc.cPrint(Type.cName[s < Type.CLASSINTERFACE ? s
: Type.CLASSINTERFACE]);
next = true;
}
}
} while (--type > Type.NULLREF);
}
if (!next) {
oc.cPrint(Type.cName[Type.VOID]);
}
oc.cPrint(" ))jmethod)(");
next = false;
if (!md.isClassMethod()) {
oc.cPrint("obj");
next = true;
}
if (msig != null) {
int[] indices = new int[Type.CLASSINTERFACE - Type.INT + 1];
int type = Type.VOID;
do {
int type2 = type == Type.LONG ? Type.FLOAT
: type == Type.FLOAT ? Type.LONG : type;
indices[0] = 0;
Enumeration en = msig.elements();
while (en.hasMoreElements()) {
int s = ((ExpressionType) en.nextElement()).objectSize();
if (type2 == s
|| (type == Type.VOID && s >= Type.CLASSINTERFACE)) {
if (next) {
oc.cPrint(", ");
}
boolean isBool = false;
if (s < Type.INT) {
oc.cPrint("(");
oc.cPrint(Type.cName[s]);
oc.cPrint(")");
if (s == Type.BOOLEAN) {
oc.cPrint("(");
isBool = true;
}
s = Type.INT;
} else if (s >= Type.CLASSINTERFACE) {
s = Type.CLASSINTERFACE;
}
oc.cPrint("JCGO_ARR_INTERNALACC(");
oc.cPrint(Type.cName[s]);
oc.cPrint(", ");
oc.cPrint(s != Type.CLASSINTERFACE ? Type.name[s]
: "object");
oc.cPrint("Args, ");
oc.cPrint(Integer.toString(indices[s - Type.INT]++));
oc.cPrint(")");
if (isBool) {
oc.cPrint("!= 0)");
}
next = true;
} else if (s <= Type.INT) {
indices[0]++;
}
}
} while (--type > Type.NULLREF);
}
oc.cPrint(")");
if (s0 == Type.BOOLEAN) {
oc.cPrint("? 1\003 :\003 0");
}
oc.cPrint(";");
if (s0 < Type.CLASSINTERFACE) {
oc.cPrint("return ");
oc.cPrint(LexTerm.NULL_STR);
oc.cPrint(";");
}
oc.cPrint("}\n\n");
}
}