[GROOVY-9507] JSP style loop in StreamingTemplateEngine template results in TemplateParseException

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.3
• Fix Version/s: 4.0.0-alpha-1, 3.0.4
• Component/s: Templating
• Assignee: Daniel Sun
• Reporter: Christopher Chase
• Created: 15/Apr/20 01:31
• Updated: 22/May/20 04:03
• Resolved: 17/Apr/20 15:53

Description

 

The example below works as expected when run in Groovy 2.5.8, yet it fails when run in Groovy 3.0.3

 

 

TemplateEngine engine = new StreamingTemplateEngine()

Template template = engine.createTemplate('''
<ul>
    <% items.each { %>
    <li>${it}</li>
    <% } %>
</ul>
''')

println template.make([items : [1,2,3,4]])

 

Expected output (and the output 2.5.8 yields):

 

<ul>
    
    <li>1</li>
    
    <li>2</li>
    
    <li>3</li>
    
    <li>4</li>
    
</ul>

 

Exception 3.0.3 gives:

 

Exception in thread "main" groovy.text.TemplateParseException: Template parse error 'Unexpected input: '{'; Expecting RBRACE ' at line 3, column 27
         2:         <ul>
     --> 3:             <% items.each { %>
         4:             <li>${it}</li>