From a844e9bdb0ad89114e73c8ea9906606990fcfc51 Mon Sep 17 00:00:00 2001
From: Xavier Claessens <xavier.claessens@collabora.com>
Date: Fri, 27 Aug 2021 11:39:21 -0400
Subject: [PATCH] optinterpreter: Add support for dictionaries

---
 mesonbuild/optinterpreter.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/mesonbuild/optinterpreter.py b/mesonbuild/optinterpreter.py
index 72bf86517..27bda2ec2 100644
--- a/mesonbuild/optinterpreter.py
+++ b/mesonbuild/optinterpreter.py
@@ -174,6 +174,13 @@ class OptionInterpreter:
             lr = [self.reduce_single(curarg) for curarg in arg.args.arguments]
             # mypy really struggles with recursive flattening, help it out
             return T.cast(T.Sequence[T.Union[str, int, bool]], lr)
+        elif isinstance(arg, mparser.DictNode):
+            d = {}
+            for k, v in arg.args.kwargs.items():
+                if not isinstance(k, mparser.StringNode):
+                    raise OptionException('Dictionary keys must be a string literal')
+                d[k.value] = self.reduce_single(v)
+            return d
         elif isinstance(arg, mparser.UMinusNode):
             res = self.reduce_single(arg.value)
             if not isinstance(res, (int, float)):