Fixed issue that the key's value type wasn't checked correctly.

Added two new failing tests.

mesonbuild/interpreterbase.py

@@ -735,7 +735,7 @@ The result of this is undefined and will become a hard error in a future Meson r
             for (key, value) in addition.items():
                 if isinstance(key, str):
                     new_addition[key] = value
-                elif isinstance(key, mparser.IdNode):
+                elif isinstance(key, mparser.IdNode) and isinstance(self.get_variable(key.value), str):
                     FeatureNew('Adding dictionary entry using string variable as key', '0.53.0').use(self.subproject)
                     new_addition[self.get_variable(key.value)] = value
                 else:

mesonbuild/mparser.py

@@ -676,16 +676,17 @@ class Parser:
         while not isinstance(s, EmptyNode):
             potential = self.current
             if self.accept('colon'):
+                key_value = self.statement()
                 if isinstance(s, StringNode):
                     if s.value in a.kwargs:
                         # + 1 to colno to point to the actual string, not the opening quote
                         raise ParseException('Duplicate dictionary key: {}'.format(s.value), self.getline(), s.lineno, s.colno + 1)
-                    a.set_kwarg(s.value, self.statement())
-                elif isinstance(s, IdNode) and isinstance(s.value, str):
+                    a.set_kwarg(s.value, key_value)
+                elif isinstance(s, IdNode) and isinstance(key_value, StringNode):
                     for key in a.kwargs:
                         if s.value == key.value:
                             raise ParseException('Duplicate dictionary variable key: {}'.format(s.value), self.getline(), s.lineno, s.colno)
-                    a.set_kwarg(s, self.statement())
+                    a.set_kwarg(s, key_value)
                 else:
                     raise ParseException('Key must be a string or string variable', self.getline(), s.lineno, s.colno)
                 potential = self.current

test cases/failing/97 add dict non string key/meson.build

@@ -0,0 +1,9 @@
+project('add dictionary entry using non-string key')
+
+dict = {}
+
+# An integer variable to be used as a key
+key = 1
+
+# Add new entry using integer variable as key should fail
+dict += {key : 'myValue'}

test cases/failing/98 add dict duplicate keys/meson.build

@@ -0,0 +1,9 @@
+project('add dictionary entries with duplicate keys')
+
+dict = {}
+
+# A variable to be used as a key
+key = 'myKey'
+
+# Add two entries with duplicate keys should fail
+dict += {key : 'myValue1', key : 'myValue2'}