netscape-revival

sun-java/classsrc/netscape/tools/jmc/ImplStubGen.java

// Copyright (c) 1995 Netscape Communications Corporation. All rights reserved. 

package netscape.tools.jmc;

import netscape.tools.jmc.*;
import netscape.tools.jric.*;
import netscape.tools.ClassFileParser.*;
import java.io.*;
import java.util.Vector;

public abstract 
class ImplStubGen extends JMCGenerator {

    public ImplStubGen(netscape.tools.jmc.Main global, ClassDef clazz) {
	super(global, clazz);
    }

    protected String getFileName() {
	return "M" + getImplName() + ".c";
    }

    protected String getHeaderString() {
	return clazz.name + " module C-language stub file\n * Generated by jmc";
    }

    protected void generateJumpTable(Vector interfaces, String prefix) throws IOException {
	int i;

	printBlockComment("Jump Table");

	out.println("const " + clazzCName + "Interface "
		    + getImplName() + "_interface = {");
	out.println("\t(void*\t(*)(" + clazzCName + "* self, jint op, jint a))\n\t\t"
		    + prefix + "_GetInterface,");
	out.println("\t(void\t(*)(" + clazzCName + "* self, jint op))\n\t\t"
		    + prefix + "_AddRef,");
	out.println("\t(void\t(*)(" + clazzCName + "* self, jint op))\n\t\t"
		    + prefix + "_Release,");
	out.print("\t(const char**\t(*)(" + clazzCName + "* self, jint op))\n\t\t"
		  + prefix + "_Description");
	for (i = interfaces.size() - 1; i >= 0; i--) {
	    ClassDef intf = (ClassDef)interfaces.elementAt(i);
	    for (int j = 0; j < intf.methods.length; j++) {
		MethodDef method = intf.methods[j];
		out.print(",\n\t");
		printMethodType(prefix, method, j);
	    }
	}
	out.println("\n};\n");
    }

    //\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\
    
    void printMethodType(String prefix, MethodDef method, int methodIndex) 
		throws IOException {
	if (method.isVararg()) {
	    printMethodType(prefix, method, methodIndex, VARARGS_ELIPSIS);
	    out.print(",\n\t");
	    printMethodType(prefix, method, methodIndex, VARARGS_VA_LIST);
	    out.print(",\n\t");
	    printMethodType(prefix, method, methodIndex, VARARGS_ARRAY);
	}
	else 
	    printMethodType(prefix, method, methodIndex, VARARGS_NONE);
    }

    protected abstract void printMethodType(String prefix, MethodDef method,
					    int methodIndex, byte varargsType) 
		throws IOException;

}