Examples with InstanceOfExpr kalang.ast.InstanceOfExpr used on opensource projects

Example 1 with InstanceOfExpr

use of kalang.ast.InstanceOfExpr in project kalang by kasonyang.

the class AstBuilder method visitInstanceofExpr.

@Override
public Object visitInstanceofExpr(KalangParser.InstanceofExprContext ctx) {
    ExprNode expr = visitExpression(ctx.expression());
    Token ts = ctx.Identifier().getSymbol();
    AstNode tnode = getNodeById(ts.getText(), ts);
    if (tnode instanceof ClassReference) {
        InstanceOfExpr ie = new InstanceOfExpr(expr, (ClassReference) tnode);
        mapAst(ie, ctx);
        return ie;
    } else {
        AstBuilder.this.handleSyntaxError("unsupported type", ts);
        return null;
    }
}

Example 2 with InstanceOfExpr

use of kalang.ast.InstanceOfExpr in project kalang by kasonyang.

the class AstBuilder method onIf.

protected void onIf(ExprNode expr, boolean onTrue) {
    if (expr instanceof InstanceOfExpr && onTrue) {
        InstanceOfExpr ie = (InstanceOfExpr) expr;
        changeTypeTemporarilyIfCould(ie.getExpr(), Types.getClassType(ie.getTarget().getReferencedClassNode()));
    }
    if (expr instanceof CompareExpr) {
        CompareExpr ce = (CompareExpr) expr;
        ExprNode e1 = ce.getExpr1();
        ExprNode e2 = ce.getExpr2();
        boolean isEQ = ce.getOperation().equals(CompareExpr.OP_EQ);
        if (e1.getType().equals(Types.NULL_TYPE)) {
            onNull(e2, onTrue, isEQ);
        } else if (e2.getType().equals(Types.NULL_TYPE)) {
            onNull(e1, onTrue, isEQ);
        }
    }
    if (expr instanceof UnaryExpr) {
        onIf(((UnaryExpr) expr).getExpr(), !onTrue);
    }
    if (expr instanceof LogicExpr) {
        LogicExpr le = (LogicExpr) expr;
        if (le.getOperation().equals(LogicExpr.OP_LOGIC_AND)) {
            if (onTrue) {
                onIf(le.getExpr1(), true);
                onIf(le.getExpr2(), true);
            }
        } else if (le.getOperation().equals(LogicExpr.OP_LOGIC_OR)) {
            if (!onTrue) {
                onIf(le.getExpr1(), false);
                onIf(le.getExpr2(), false);
            }
        }
    }
}