[GROOVY-9855] Compiler does not resolve compile-time constants in string concatenation

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.0.7
• Fix Version/s: 3.0.8, 4.0.0-alpha-3, 2.5.16
• Component/s: Compiler, Static compilation
• Assignee: Eric Milles
• Reporter: Christopher Smith
• Created: 09/Dec/20 03:29
• Updated: 25/Sep/22 20:50
• Resolved: 24/Dec/20 15:33

Description

@Qualifier(ConfigProps.PREFIX + '.suffix')
@CompileStatic
class ConfigProps {
    public static final String PREFIX = 'prefix'
}

In this case, the value (prefix.suffix) is a compile-time constant and should be available as an annotation parameter, but the compiler does not recognize this. Both plain and static compilation produce errors, though different errors:

dynamic:

The value for annotation attribute Qualifier.value must be a constant expression

static:

Attribute 'value' should have type 'java.lang.String'; but found type 'java.lang.Object'