Parse function calls that use a name-value list

Author: cgewecke

solidity.pegjs

@@ -657,12 +657,31 @@ Arguments
   = "(" __ args:(ArgumentList __)? ")" {
       return optionalList(extractOptional(args, 0));
     }
+  / "(" __ "{" __ args:(NameValueList __ )? "}" __ ")" {
+      return optionalList(extractOptional(args, 0));
+    }
 
 ArgumentList
   = head:AssignmentExpression tail:(__ "," __ AssignmentExpression)* {
       return buildList(head, tail, 3);
     }
 
+NameValueList
+  = head:NameValueAssignment tail:(__ "," __ NameValueAssignment)* {
+      return buildList(head, tail, 3);
+    }
+
+NameValueAssignment
+  = name:Identifier __ ":" __ value:AssignmentExpression __ {
+      return {
+        type: "NameValueAssignment",
+        name: name,
+        value: value,
+        start: location().start.offset,
+        end: location().end.offset
+      };
+    }
+
 LeftHandSideExpression
   = DeclarativeExpression
   / CallExpression

test/doc_examples.sol

@@ -366,3 +366,22 @@ contract TypeIndexSpacing {
   uint [ 7 ] x;
   uint  []  y;
 }
+
+contract Ballot {
+
+    struct Voter {
+        uint weight;
+        bool voted;
+    }
+
+    function abstain() returns (bool) {
+      return false;
+    }
+
+    Voter you = Voter(1, true);
+
+    Voter me = Voter({
+        weight: 2,
+        voted: abstain()
+    });
+}