[GROOVY-1665] Allow Closures to be lazily evaluated in GStrings

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.0
• Fix Version/s: 1.1-beta-1
• Component/s: groovy-jdk
• Assignee: John Wilson
• Reporter: John Wilson
• Created: 22/Jan/07 05:31
• Updated: 22/Jan/07 06:00
• Resolved: 22/Jan/07 05:40

Description

When a Closure is a value in a GString do the following when the GString is printed or has toString called on it.

If the Closure takes 0 parameters then call the Closure and use the returned value as the value at that point in the GString

If the Closure takes 1 parameter then call the Closure with a Writer as the parameter and use the characters written to the Writer as the value at that point in the GString

If the Closure takes more that one parameter throw a GroovyRuntimeException.