fix-FunctionTypeName (#67)

* add FunctionTypeName

* moar extra spaces

* bump version

Author: mattiaerre

package.json

@@ -1,6 +1,6 @@
 {
   "name": "prettier-plugin-solidity",
-  "version": "1.0.0-alpha.7",
+  "version": "1.0.0-alpha.8",
   "description": "prettier plugin for solidity",
   "main": "src",
   "scripts": {

src/printer.js

@@ -479,6 +479,32 @@ function genericPrint(path, options, print) {
         ':=',
         path.call(print, 'expression')
       ]);
+    case 'FunctionTypeName': {
+      const returns = returnTypes => {
+        if (returnTypes.length > 0) {
+          return concat([
+            'returns(',
+            join(', ', path.map(print, 'returnTypes')),
+            ')'
+          ]);
+        }
+        return null;
+      };
+
+      return join(
+        ' ',
+        [
+          concat([
+            'function(',
+            join(', ', path.map(print, 'parameterTypes')),
+            ')'
+          ]),
+          returns(node.returnTypes),
+          node.visibility === 'default' ? null : node.visibility,
+          node.stateMutability
+        ].filter(element => element)
+      );
+    }
     default:
       throw new Error(`Unknown type: ${JSON.stringify(node.type)}`);
   }

tests/Etc/Etc.sol

@@ -7,6 +7,12 @@ pragma solidity ^0.4.24;
 */
 
 contract Contract {
+  struct StructWithFunctionTypes {
+    function (uint, uint) returns(bool)a;
+    function(bytes32, bytes32)   internal view[]  b;
+    function  (bytes32, bytes32)internal[]   c;
+  }
+
   modifier modifierWithoutParams() {
     require(msg.sender != address(0));
     _;

tests/Etc/__snapshots__/jsfmt.spec.js.snap

@@ -10,6 +10,12 @@ pragma solidity ^0.4.24;
 */
 
 contract Contract {
+  struct StructWithFunctionTypes {
+    function (uint, uint) returns(bool)a;
+    function(bytes32, bytes32)   internal view[]  b;
+    function  (bytes32, bytes32)internal[]   c;
+  }
+
   modifier modifierWithoutParams() {
     require(msg.sender != address(0));
     _;
@@ -30,6 +36,12 @@ pragma solidity ^0.4.24;
 */
 
 contract Contract {
+  struct StructWithFunctionTypes {
+    function(uint, uint) returns(bool) a;
+    function(bytes32, bytes32) internal view[] b;
+    function(bytes32, bytes32) internal[] c;
+  }
+
   modifier modifierWithoutParams() {
     require(msg.sender != address(0));
     _;