Examples with ExprMissing org.csstudio.autocomplete.parser.engine.expr.ExprMissing used on opensource projects

Example 1 with ExprMissing

use of org.csstudio.autocomplete.parser.engine.expr.ExprMissing in project yamcs-studio by yamcs.

the class ExprParser method parseFunction.

private void parseFunction(ExprToken token, ExprLexer lexer) throws ExprException, IOException {
    Expr c = current;
    current = null;
    ExprToken e = null;
    ArrayList<Expr> args = new ArrayList<Expr>();
    boolean complete = false;
    while ((e = lexer.next()) != null) {
        if (e.type.equals(ExprTokenType.Comma)) {
            if ((e = lexer.next()) != null) {
                current = null;
                parseToken(lexer, e);
                args.add(current == null ? new ExprMissing() : current);
            } else {
                args.add(new ExprMissing());
            }
        } else if (e.type.equals(ExprTokenType.CloseBracket)) {
            // end
            complete = true;
            current = c;
            break;
        } else {
            // first arg
            parseToken(lexer, e);
            args.add(current == null ? new ExprMissing() : current);
        }
    }
    ExprFunction f = new ExprFunction(token.val, (Expr[]) args.toArray(new Expr[0]));
    f.setComplete(complete);
    setValue(f);
}

Example 2 with ExprMissing

use of org.csstudio.autocomplete.parser.engine.expr.ExprMissing in project yamcs-studio by yamcs.

the class ExprParser method parseConditionalOperator.

private void parseConditionalOperator(ExprToken token, ExprLexer lexer) throws ExprException, IOException {
    Expr c = current;
    current = null;
    ExprToken e = null;
    ExprConditionalOperator co = new ExprConditionalOperator(c, null, null);
    while ((e = lexer.next()) != null) {
        if (e.type.equals(ExprTokenType.Colon)) {
            if ((e = lexer.next()) != null) {
                current = null;
                parseToken(lexer, e);
                co.setValueIfFalse(current == null ? new ExprMissing() : current);
            } else {
                co.setValueIfFalse(new ExprMissing());
            }
            break;
        } else {
            parseToken(lexer, e);
            co.setValueIfTrue(current == null ? new ExprMissing() : current);
        }
    }
    setValue(co);
}

Example 3 with ExprMissing

use of org.csstudio.autocomplete.parser.engine.expr.ExprMissing in project yamcs-studio by yamcs.

the class ExprParser method parseArray.

private void parseArray(ExprLexer lexer) throws ExprException, IOException {
    Expr c = current;
    current = null;
    ExprToken e = null;
    int cols = -1;
    int count = 0;
    ArrayList<Expr> args = new ArrayList<Expr>();
    while ((e = lexer.next()) != null) {
        if (e.type.equals(ExprTokenType.Comma)) {
            // if (current == null)
            // throw new ExprException("Arrays cannot contain empty values");
            args.add(current == null ? new ExprMissing() : current);
            current = null;
            count++;
        } else if (e.type.equals(ExprTokenType.SemiColon)) {
            // if (current == null)
            // throw new ExprException("Arrays cannot contain empty values");
            args.add(current == null ? new ExprMissing() : current);
            current = null;
            count++;
            // if (count == 0) {
            // throw new ExprException("Array rows must contain at least one element");
            // }
            // if (cols != -1 && count != cols) {
            // throw new ExprException("Array rows must be equal sizes");
            // }
            cols = count;
            count = 0;
        } else if (e.type.equals(ExprTokenType.CloseBrace)) {
            args.add(current == null ? new ExprMissing() : current);
            current = c;
            int rows = 1;
            if (cols == -1)
                cols = args.size();
            else
                rows = args.size() / cols;
            ExprArray a = new ExprArray(rows, cols);
            for (int i = 0; i < args.size(); i++) {
                a.set(0, i, (Expr) args.get(i));
            }
            setValue(a);
            break;
        } else {
            parseToken(lexer, e);
        }
    }
}