Can chain multiple logical operations in a row.

mparser.py

@@ -318,14 +318,14 @@ class Parser:
 
     def e2(self):
         left = self.e3()
-        if self.accept('or'):
+        while self.accept('or'):
-            return OrNode(left.lineno, left.colno, left, self.e3())
+            left = OrNode(left.lineno, left.colno, left, self.e3())
         return left
 
     def e3(self):
         left = self.e4()
-        if self.accept('and'):
+        while self.accept('and'):
-            return AndNode(left.lineno, left.colno, left, self.e4())
+            left = AndNode(left.lineno, left.colno, left, self.e4())
         return left
 
     def e4(self):

test cases/common/40 logic ops/meson.build

@@ -75,3 +75,15 @@ else
   error('Negation failed.')
 endif
 
+
+if f or f or f or f or f or f or f or f or t
+  message('Ok.')
+else
+  error('Chain of ors failed.')
+endif
+
+if t and t and t and t and t and t and t and t and f
+  error('Chain of ands failed.')
+else
+  message('Ok.')
+endif