GetGlobalVariableInstr.java
- 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.operands.Variable;
- 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 GetGlobalVariableInstr extends GetInstr implements FixedArityInstr {
- public GetGlobalVariableInstr(Variable dest, String gvarName) {
- this(dest, new GlobalVariable(gvarName));
- }
- public GetGlobalVariableInstr(Variable dest, GlobalVariable gvar) {
- super(Operation.GET_GLOBAL_VAR, dest, gvar, null);
- }
- @Override
- public Operand[] getOperands() {
- return new Operand[] { getSource() };
- }
- public boolean computeScopeFlags(IRScope scope) {
- String name = ((GlobalVariable) getSource()).getName();
- if (name.equals("$_") || name.equals("$~") || name.equals("$`") || name.equals("$'") ||
- name.equals("$+") || name.equals("$LAST_READ_LINE") || name.equals("$LAST_MATCH_INFO") ||
- name.equals("$PREMATCH") || name.equals("$POSTMATCH") || name.equals("$LAST_PAREN_MATCH")) {
- scope.getFlags().add(IRFlags.USES_BACKREF_OR_LASTLINE);
- return true;
- }
- return false;
- }
- @Override
- public Instr clone(CloneInfo ii) {
- return new GetGlobalVariableInstr(ii.getRenamedVariable(getResult()), ((GlobalVariable)getSource()).getName());
- }
- @Override
- public Object interpret(ThreadContext context, StaticScope currScope, DynamicScope currDynScope, IRubyObject self, Object[] temp) {
- return getSource().retrieve(context, self, currScope, currDynScope, temp);
- }
- @Override
- public void visit(IRVisitor visitor) {
- visitor.GetGlobalVariableInstr(this);
- }
- }