String arguments can permit arbitrary string values

by leaving out the choices keyword.

1 files changed, 11 insertions, 9 deletions

diff --git a/mesonbuild/optinterpreter.py b/mesonbuild/optinterpreter.py
index 22a263e..3cca239 100644
--- a/mesonbuild/optinterpreter.py
+++ b/mesonbuild/optinterpreter.py
@@ -86,15 +86,17 @@ def ComboParser(name, description, kwargs):
 
 @permitted_kwargs({'value', 'choices'})
 def string_array_parser(name, description, kwargs):
-    if 'choices' not in kwargs:
-        raise OptionException('Array option missing "choices" keyword.')
-    choices = kwargs['choices']
-    if not isinstance(choices, list):
-        raise OptionException('Array choices must be an array.')
-    for i in choices:
-        if not isinstance(i, str):
-            raise OptionException('Array choice elements must be strings.')
-    value = kwargs.get('value', choices)
+    if 'choices' in kwargs:
+        choices = kwargs['choices']
+        if not isinstance(choices, list):
+            raise OptionException('Array choices must be an array.')
+        for i in choices:
+            if not isinstance(i, str):
+                raise OptionException('Array choice elements must be strings.')
+            value = kwargs.get('value', choices)
+    else:
+        choices = None
+        value = kwargs.get('value', [])
     if not isinstance(value, list):
         raise OptionException('Array choices must be passed as an array.')
     return coredata.UserStringArrayOption(name, description, value, choices=choices)