package org.jruby.ir.instructions.ruby19;
import org.jruby.ir.IRVisitor;
import org.jruby.ir.instructions.CopyInstr;
import org.jruby.ir.instructions.Instr;
import org.jruby.ir.instructions.OptArgMultipleAsgnInstr;
import org.jruby.ir.instructions.ReceiveOptArgBase;
import org.jruby.ir.operands.UndefinedValue;
import org.jruby.ir.operands.Variable;
import org.jruby.ir.transformations.inlining.InlinerInfo;
import org.jruby.runtime.builtin.IRubyObject;
public class ReceiveOptArgInstr19 extends ReceiveOptArgBase {
/** This instruction gets to pick an argument off the incoming list only if
* there are at least this many incoming arguments */
public final int minArgsLength;
public ReceiveOptArgInstr19(Variable result, int index, int minArgsLength) {
super(result, index);
this.minArgsLength = minArgsLength;
}
@Override
public String toString() {
return (isDead() ? "[DEAD]" : "") + (hasUnusedResult() ? "[DEAD-RESULT]" : "") + getResult() + " = " + getOperation() + "(" + argIndex + ", " + minArgsLength + ")";
}
@Override
public Instr cloneForInlining(InlinerInfo ii) {
if (ii.canMapArgsStatically()) {
int n = ii.getArgsCount();
return new CopyInstr(ii.getRenamedVariable(result), minArgsLength <= n ? ii.getArg(argIndex) : UndefinedValue.UNDEFINED);
} else {
return new OptArgMultipleAsgnInstr(ii.getRenamedVariable(result), ii.getArgs(), argIndex, minArgsLength);
}
}
@Override
public Instr cloneForBlockCloning(InlinerInfo ii) {
return new ReceiveOptArgInstr19(ii.getRenamedVariable(result), argIndex, minArgsLength);
}
public Object receiveOptArg(IRubyObject[] args) {
return (minArgsLength <= args.length ? args[argIndex] : UndefinedValue.UNDEFINED);
}
@Override
public void visit(IRVisitor visitor) {
visitor.ReceiveOptArgInstr19(this);
}
}