Examples with Node org.eclipse.n4js.flowgraphs.model.Node used on opensource projects

Example 31 with Node

use of org.eclipse.n4js.flowgraphs.model.Node in project n4js by eclipse.

the class GraphVisitorGuideInternal method walkthrough.

private void walkthrough(ComplexNode cn, NextEdgesProvider edgeProvider) {
    List<BranchWalkerInternal> activatedPaths = initVisit();
    guideWorklist.initialize(cn, edgeProvider, activatedPaths);
    Node lastVisitNode = null;
    for (EdgeGuide currEdgeGuide : guideWorklist.getCurrentEdgeGuides()) {
        Node visitNode = currEdgeGuide.getPrevNode();
        visitNode(lastVisitNode, currEdgeGuide, visitNode);
        lastVisitNode = visitNode;
    }
    while (guideWorklist.hasNext()) {
        flowAnalyzer.checkCancelled();
        EdgeGuide currEdgeGuide = guideWorklist.next();
        Node visitNode = currEdgeGuide.getNextNode();
        visitNode(lastVisitNode, currEdgeGuide, visitNode);
        lastVisitNode = visitNode;
        mergeEdgeGuides();
    }
}

Example 32 with Node

use of org.eclipse.n4js.flowgraphs.model.Node in project n4js by eclipse.

the class BinaryLogicalExpressionFactory method buildComplexNode.

static ComplexNode buildComplexNode(ReentrantASTIterator astpp, BinaryLogicalExpression lbExpr) {
    ComplexNode cNode = new ComplexNode(astpp.container(), lbExpr);
    HelperNode entryNode = new HelperNode(NodeNames.ENTRY, astpp.pos(), lbExpr);
    Node lhsNode = DelegatingNodeFactory.createOrHelper(astpp, NodeNames.LHS, lbExpr, lbExpr.getLhs());
    Node scJumpNode = new HelperNode(NodeNames.SHORT_CIRCUIT_JUMP, astpp.pos(), lbExpr);
    Node rhsNode = DelegatingNodeFactory.createOrHelper(astpp, NodeNames.RHS, lbExpr, lbExpr.getRhs());
    Node exitNode = new RepresentingNode(NodeNames.EXIT, astpp.pos(), lbExpr);
    cNode.addNode(entryNode);
    cNode.addNode(lhsNode);
    cNode.addNode(scJumpNode);
    cNode.addNode(rhsNode);
    cNode.addNode(exitNode);
    ControlFlowType thenCFT = null;
    ControlFlowType elseCFT = null;
    switch(lbExpr.getOp()) {
        case OR:
            thenCFT = ControlFlowType.IfFalse;
            elseCFT = ControlFlowType.IfTrue;
            break;
        case AND:
            thenCFT = ControlFlowType.IfTrue;
            elseCFT = ControlFlowType.IfFalse;
            break;
    }
    cNode.connectInternalSucc(entryNode, lhsNode, scJumpNode);
    cNode.connectInternalSucc(thenCFT, scJumpNode, rhsNode);
    cNode.connectInternalSucc(rhsNode, exitNode);
    // short-circuit evaluation
    scJumpNode.addJumpToken(new JumpToken(elseCFT));
    cNode.setJumpNode(scJumpNode);
    cNode.setEntryNode(entryNode);
    cNode.setExitNode(exitNode);
    rhsNode.addCatchToken(new CatchToken(thenCFT));
    boolean isCatchingLhs = isTopJumpCatcher(lbExpr);
    if (isCatchingLhs) {
        exitNode.addCatchToken(new CatchToken(elseCFT));
        exitNode.addCatchToken(new CatchToken(thenCFT));
    } else {
    // TODO: minor improvement: add the following jump node
    // exitNode.addJumpToken(new JumpToken(thenCFT)); // short-circuit evaluation
    // cNode.setJumpNode(scJumpNode);
    }
    return cNode;
}

Example 33 with Node

use of org.eclipse.n4js.flowgraphs.model.Node in project n4js by eclipse.

the class AbstractCaseClauseFactory method buildComplexNode.

static ComplexNode buildComplexNode(ReentrantASTIterator astpp, AbstractCaseClause abstrCaseClause) {
    ComplexNode cNode = new ComplexNode(astpp.container(), abstrCaseClause);
    Node entryNode = new HelperNode(NodeNames.ENTRY, astpp.pos(), abstrCaseClause);
    List<Node> stmtNodes = new LinkedList<>();
    Node caseConditionNode = null;
    if (abstrCaseClause instanceof CaseClause) {
        CaseClause caseClause = (CaseClause) abstrCaseClause;
        caseConditionNode = DelegatingNodeFactory.create(astpp, NodeNames.CONDITION, caseClause, caseClause.getExpression());
    }
    EList<Statement> stmts = abstrCaseClause.getStatements();
    for (int i = 0; i < stmts.size(); i++) {
        Statement stmt = stmts.get(i);
        Node blockNode = new DelegatingNode("stmt_" + i, astpp.pos(), abstrCaseClause, stmt);
        stmtNodes.add(blockNode);
        astpp.visitUtil(blockNode.getDelegatedControlFlowElement());
    }
    Node exitNode = new HelperNode(NodeNames.EXIT, astpp.pos(), abstrCaseClause);
    cNode.addNode(entryNode);
    cNode.addNode(caseConditionNode);
    for (Node blockNode : stmtNodes) cNode.addNode(blockNode);
    cNode.addNode(exitNode);
    List<Node> nodes = new LinkedList<>();
    nodes.add(entryNode);
    nodes.add(caseConditionNode);
    nodes.addAll(stmtNodes);
    nodes.add(exitNode);
    cNode.connectInternalSucc(nodes);
    cNode.setEntryNode(entryNode);
    cNode.setExitNode(exitNode);
    return cNode;
}

Example 34 with Node

use of org.eclipse.n4js.flowgraphs.model.Node in project n4js by eclipse.

the class BlockFactory method buildComplexNode.

static ComplexNode buildComplexNode(ReentrantASTIterator astpp, org.eclipse.n4js.n4JS.Block block) {
    ComplexNode cNode = new ComplexNode(astpp.container(), block);
    Node entryNode = new HelperNode(NodeNames.ENTRY, astpp.pos(), block);
    List<Node> blockNodes = new LinkedList<>();
    EList<Statement> stmts = block.getStatements();
    for (int i = 0; i < stmts.size(); i++) {
        Statement stmt = stmts.get(i);
        Node blockNode = DelegatingNodeFactory.create(astpp, "stmt_" + i, block, stmt);
        blockNodes.add(blockNode);
    }
    Node exitNode = new HelperNode(NodeNames.EXIT, astpp.pos(), block);
    cNode.addNode(entryNode);
    for (Node blockNode : blockNodes) cNode.addNode(blockNode);
    cNode.addNode(exitNode);
    List<Node> nodes = new LinkedList<>();
    nodes.add(entryNode);
    nodes.addAll(blockNodes);
    nodes.add(exitNode);
    cNode.connectInternalSucc(nodes);
    cNode.setEntryNode(entryNode);
    cNode.setExitNode(exitNode);
    if (FGUtils.isCFContainer(block)) {
        exitNode.addCatchToken(new CatchToken(ControlFlowType.CatchesAll));
    } else {
        LabelledStatement lblStmt = ASTUtils.getLabelledStatement(block);
        if (lblStmt != null) {
            exitNode.addCatchToken(new CatchToken(ControlFlowType.Break, lblStmt));
        }
    }
    return cNode;
}

Example 35 with Node

use of org.eclipse.n4js.flowgraphs.model.Node in project n4js by eclipse.

the class CatchNodeFinder method find.

/**
 * @return the node to which the given {@code jumpNode} jumps via the given {@link JumpToken}. Can return null.
 */
static Pair<Node, ControlFlowType> find(JumpToken jumpToken, Node jumpNode, ComplexNodeMapper cnMapper) {
    CatchEvaluator catchEvaluator = getCatchEvaluator(jumpToken);
    ControlFlowElement cfe = jumpNode.getControlFlowElement();
    cfe = skipContainers(cfe);
    ControlFlowElement lastCFE = null;
    while (cfe != null) {
        Pair<Node, ControlFlowType> catcher = findCatchNode(jumpToken, cfe, lastCFE, catchEvaluator, cnMapper);
        if (catcher != null)
            return catcher;
        lastCFE = cfe;
        cfe = getContainer(cfe);
    }
    return null;
}