Re: [Webmacro-devel] Parser error: StringIndexOutOfRange

[Keats <ke...@ea...>]

Marc,

I have isolated this problem and it appears to be a whitespace issue with
the in-line explicit #begin.

I reduced your test case to the minimal:

#if (true) #begin #set $x=0 #end

which still gives the error.  Adding a second space before the #set (or
replacing it with a newline) makes the error go away.  Apparently the parser
prematurely discards the whitespace that it needs to recognize the next
token as a directive.

I have made a one-line patch to the ParserBlockBuilder.directiveOK(), line
227, to check for an empty String which seems to fix the problem.  All the
unit tests still pass, but I guess I'd feel more confortable having Brian
bless this before I commit the change.

Keats

----- Original Message -----
From: "Marc Palmer" <ma...@an...>
To: <web...@li...>
Sent: Friday, August 01, 2003 7:12 AM
Subject: [Webmacro-devel] Parser error: StringIndexOutOfRange


>
> I just got, using the latest CVS source:
>
> org.webmacro.engine.BuildException: Error parsing template:
> FileTemplate:xxxxxx (name removed)
> java.lang.StringIndexOutOfBoundsException: String index out of range: -1
>
> The problem seems to be related to #begin...#end handling, possibly to do
> with nested directives (#set).
>
> If I remove my EXPLICIT #begin...#end it works fine.
>
> The line is marked in the template below. I will add a test case for this.
>
>
> #include "includes/header.wmt"
>
> <h2>Generator for SQL CREATE TABLE based on Metalizer Schema</h2>
>
> <form action="gensql.wmt" method="post">
> Schema name: <input name="$Ignition.FormFieldName.schemaName"
> #if ($Ignition.FieldValue.schemaName)
>     value="$Ignition.FieldValue.schemaName"
> #end
> >
> <input type="submit" value=" Generate ">
> </form>
>
> #if ($Ignition.FieldValue.schemaName)
> <h3>SQL follows:</h3>
>
> #set $schema = $Ignition.getSchema($Ignition.FieldValue.schemaName)
> <pre>
> CREATE TABLE tablename (
>
> #set $first = true
> #foreach $group in $schema.FieldGroups
> #begin
>     #foreach $fieldName in $schema.getFieldNamesInGroup($group)
>     #begin
>         #set $field = $schema.getField($fieldName)
> !!!!!!!!!!!! This next line is the problem
>         #if ($first) #begin #set $first = false #end #else #begin , #end
>         $field.Name $field.DataType.Name
>     #end
> #end
> );
> </pre>
>
> #end
>