package org.jruby.ir.instructions;
import org.jruby.ir.IRFlags;
import org.jruby.ir.IRScope;
import org.jruby.ir.IRVisitor;
import org.jruby.ir.Operation;
import org.jruby.ir.operands.GlobalVariable;
import org.jruby.ir.operands.Operand;
import org.jruby.ir.transformations.inlining.CloneInfo;
import org.jruby.parser.StaticScope;
import org.jruby.runtime.DynamicScope;
import org.jruby.runtime.ThreadContext;
import org.jruby.runtime.builtin.IRubyObject;
public class PutGlobalVarInstr extends PutInstr implements FixedArityInstr {
public PutGlobalVarInstr(String varName, Operand value) {
super(Operation.PUT_GLOBAL_VAR, new GlobalVariable(varName), null, value);
}
@Override
public Operand[] getOperands() {
return new Operand[] { getTarget(), getValue() };
}
@Override
public boolean computeScopeFlags(IRScope scope) {
String gvName = ((GlobalVariable) getTarget()).getName();
if (gvName.equals("$_") || gvName.equals("$~")) {
scope.getFlags().add(IRFlags.USES_BACKREF_OR_LASTLINE);
return true;
}
return false;
}
@Override
public Instr clone(CloneInfo ii) {
return new PutGlobalVarInstr(((GlobalVariable) getTarget()).getName(), getValue().cloneForInlining(ii));
}
@Override
public Object interpret(ThreadContext context, StaticScope currScope, DynamicScope currDynScope, IRubyObject self, Object[] temp) {
GlobalVariable target = (GlobalVariable)getTarget();
IRubyObject value = (IRubyObject) getValue().retrieve(context, self, currScope, currDynScope, temp);
context.runtime.getGlobalVariables().set(target.getName(), value);
return null;
}
@Override
public void visit(IRVisitor visitor) {
visitor.PutGlobalVarInstr(this);
}
}