Examples of org.jruby.ir.operands.Variable

org.jruby.ir.operands.Variable

        // Now build the dummy rescue block that:
        // * catches all exceptions thrown by the body
        // * jumps to the ensure block code
        // * returns back (via set_retaddr instr)
        Label rethrowExcLabel = s.getNewLabel();
        Variable exc = s.getNewTemporaryVariable();
        s.addInstr(new LabelInstr(ebi.dummyRescueBlockLabel));
        s.addInstr(new ReceiveExceptionInstr(exc, false)); // Dont check type since we are simply throwing it back
        s.addInstr(new SetReturnAddressInstr(ebi.returnAddr, rethrowExcLabel));


        // Generate the ensure block now

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    public Operand buildFCall(FCallNode fcallNode, IRScope s) {
        Node          callArgsNode = fcallNode.getArgsNode();
        List<Operand> args         = setupCallArgs(callArgsNode, s);
        Operand       block        = setupCallClosure(fcallNode.getIterNode(), s);
        Variable      callResult   = s.getNewTemporaryVariable();
        CallInstr     callInstr    = CallInstr.create(CallType.FUNCTIONAL, callResult, new MethAddr(fcallNode.getName()), getSelf(s), args.toArray(new Operand[args.size()]), block);
        receiveBreakException(s, block, callInstr);
        return callResult;
    }

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        Fixnum s1 = new Fixnum((long)1);
        Fixnum s2 = new Fixnum((long)2);


        // Create a variable to hold the flip state 
        IRScope nearestNonClosure = s.getNearestFlipVariableScope();
        Variable flipState = nearestNonClosure.getNewFlipStateVariable();
        nearestNonClosure.initFlipStateVariable(flipState, s1);
        if (s instanceof IRClosure) {
            // Clone the flip variable to be usable at the proper-depth.
            int n = 0;
            IRScope x = s;
            while (!x.isFlipScope()) {
                if (!x.isForLoopBody()) n++;
                x = x.getLexicalParent();
            }
            if (n > 0) flipState = ((LocalVariable)flipState).cloneForDepth(n);
        }


        // Variables and labels needed for the code
        Variable returnVal = s.getNewTemporaryVariable();
        Label    s2Label   = s.getNewLabel();
        Label    doneLabel = s.getNewLabel();


        // Init
        s.addInstr(new CopyInstr(returnVal, manager.getFalse()));

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        // Or is this a premature optimization?
        return new Float(node.getValue());
    }


    public Operand buildFor(ForNode forNode, IRScope s) {
        Variable result = s.getNewTemporaryVariable();
        Operand  receiver = build(forNode.getIterNode(), s);
        Operand  forBlock = buildForIter(forNode, s);
        CallInstr callInstr = new CallInstr(CallType.NORMAL, result, new MethAddr("each"), receiver, NO_ARGS, forBlock);
        receiveBreakException(s, forBlock, callInstr);

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        s.addInstr(new PutGlobalVarInstr(globalAsgnNode.getName(), value));
        return value;
    }


    public Operand buildGlobalVar(GlobalVarNode node, IRScope s) {
        Variable rv  = s.getNewTemporaryVariable();
        s.addInstr(new GetGlobalVariableInstr(rv, node.getName()));
        return rv;
    }

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    //     --- r is the result of the if expression --
    //
    public Operand buildIf(final IfNode ifNode, IRScope s) {
        Node actualCondition = skipOverNewlines(s, ifNode.getCondition());


        Variable result;
        Label    falseLabel = s.getNewLabel();
        Label    doneLabel  = s.getNewLabel();
        Operand  thenResult;
        s.addInstr(BEQInstr.create(build(actualCondition, s), manager.getFalse(), falseLabel));

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        s.addInstr(new PutFieldInstr(getSelf(s), instAsgnNode.getName(), val));
        return val;
    }


    public Operand buildInstVar(InstVarNode node, IRScope s) {
        Variable ret = s.getNewTemporaryVariable();
        s.addInstr(new GetFieldInstr(ret, getSelf(s), node.getName()));
        return ret;
    }

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    public Operand buildLiteral(LiteralNode literalNode, IRScope s) {
        return copyAndReturnValue(s, new StringLiteral(literalNode.getName()));
    }


    public Operand buildLocalAsgn(LocalAsgnNode localAsgnNode, IRScope s) {
        Variable var  = s.getLocalVariable(localAsgnNode.getName(), localAsgnNode.getDepth());
        Operand value = build(localAsgnNode.getValueNode(), s);
        s.addInstr(new CopyInstr(var, value));
        return value;  


        // IMPORTANT: The return value of this method is value, not var!

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        return s.getLocalVariable(node.getName(), node.getDepth());
    }


    public Operand buildMatch(MatchNode matchNode, IRScope s) {
        Operand regexp = build(matchNode.getRegexpNode(), s);
        Variable result = s.getNewTemporaryVariable();
        s.addInstr(new MatchInstr(result, regexp));
        return result;
    }

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    }


    public Operand buildMatch2(Match2Node matchNode, IRScope s) {
        Operand receiver = build(matchNode.getReceiverNode(), s);
        Operand value    = build(matchNode.getValueNode(), s);
        Variable result = s.getNewTemporaryVariable();        
        s.addInstr(new Match2Instr(result, receiver, value));
        return result;
    }

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Related Classes of org.jruby.ir.operands.Variable

org.jruby.ir.dataflow.analyses.LiveVariableNode

org.jruby.ir.dataflow.analyses.LiveVariablesProblem

org.jruby.ir.dataflow.analyses.StoreLocalVarPlacementNode

org.jruby.ir.dataflow.analyses.StoreLocalVarPlacementProblem

org.jruby.ir.instructions.BreakInstr

org.jruby.ir.instructions.Instr

org.jruby.ir.instructions.NonlocalReturnInstr

org.jruby.ir.instructions.ReturnInstr

org.jruby.ir.instructions.RuntimeHelperCall

org.jruby.ir.interpreter.Interpreter

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