TqlExpressionVisitor.java 文件源码

@Override
public TqlElement visitFieldIn(TqlParser.FieldInContext ctx) {
    LOG.debug("Visit field in: " + ctx.getText());
    TerminalNode field = ctx.getChild(TerminalNode.class, 0);
    TqlElement fieldName = field.accept(this);
    // All children which are not terminal values are the needed literal values (see syntax)
    LiteralValue[] literalValues = ctx.children.stream().filter(c -> c instanceof TqlParser.LiteralValueContext
            || c instanceof TqlParser.BooleanValueContext || c instanceof ErrorNode).map(c -> (LiteralValue) c.accept(this))
            .toArray(LiteralValue[]::new);
    FieldInExpression fieldIn = new FieldInExpression(fieldName, literalValues);
    LOG.debug("End visit field in: " + ctx.getText());
    return fieldIn;
}