Examples with LatchedExpr com.rockwellcollins.atc.agree.agree.LatchedExpr used on opensource projects

Example 1 with LatchedExpr

use of com.rockwellcollins.atc.agree.agree.LatchedExpr in project AGREE by loonwerks.

the class AgreeValidator method checkLatchedExpr.

@Check(CheckType.FAST)
public void checkLatchedExpr(LatchedExpr latched) {
    // get container
    EObject container = latched.eContainer();
    AgreeContract contract = null;
    while (!(container instanceof ComponentClassifier)) {
        if (container instanceof AgreeContract) {
            contract = (AgreeContract) container;
        }
        container = container.eContainer();
    }
    if (container instanceof ComponentImplementation) {
        boolean foundLatchedStatement = false;
        for (SpecStatement spec : contract.getSpecs()) {
            if (spec instanceof LatchedStatement) {
                foundLatchedStatement = true;
                break;
            }
        }
        if (!foundLatchedStatement) {
            error(latched, "Latched expressions can appear only in component implementations " + "that contain a latched synchrony statement");
        }
    } else {
        error(latched, "Latched expressions can appear only in component implementations");
    }
    Expr expr = latched.getExpr();
    Expr nestId = null;
    if (expr instanceof NamedElmExpr) {
        nestId = expr;
    } else if (expr instanceof EventExpr) {
        EventExpr eventExpr = (EventExpr) expr;
        nestId = eventExpr.getPort();
    }
    if (nestId != null) {
        NamedElement namedEl = null;
        if (nestId instanceof NamedElmExpr) {
            namedEl = ((NamedElmExpr) nestId).getElm();
        } else if (nestId instanceof SelectionExpr) {
            namedEl = ((SelectionExpr) nestId).getField();
        }
        if ((namedEl instanceof DataPort) && ((DataPort) namedEl).isIn()) {
            return;
        } else if ((namedEl instanceof EventDataPort) && ((EventDataPort) namedEl).isIn()) {
            return;
        } else {
            // check to see if it is an "agree_input"
            EObject namedElContainer = namedEl.eContainer();
            if (namedElContainer instanceof InputStatement) {
                return;
            }
        }
    }
    error(latched, "Latched expressions are valid only for input data ports or event expressions over input event data ports");
}