Add assembly case blocks (#92)

* Add support for AssemblyIf

* Print assembly cases blocks

* Indent switch cases in assembly code

Author: Franco Victorio

src/printer.js

@@ -512,14 +512,19 @@ function genericPrint(path, options, print) {
       return node.value;
     case 'AssemblySwitch':
       doc = join(hardline, path.map(print, 'cases'));
-      return concat(['switch ', path.call(print, 'expression'), hardline, doc]);
+      return concat([
+        'switch ',
+        path.call(print, 'expression'),
+        indent(hardline),
+        indent(doc)
+      ]);
     case 'AssemblyCase':
       if (node.default) {
         doc = concat(['default']);
       } else {
         doc = concat(['case ', path.call(print, 'value')]);
       }
-      return join(' ', [doc, '{}']);
+      return join(' ', [doc, path.call(print, 'block')]);
     case 'AssemblyLocalDefinition':
       return join(' ', [
         'let',

tests/Assembly/Assembly.sol

@@ -7,4 +7,16 @@ contract Assembly {
       }
     }
   }
+
+  function caseAssembly() {
+    assembly {
+          switch value
+            case 0 {
+              mstore(0, 0x0000000000000000000000000000000000000000000000000000000000000000)
+            }
+            case 1 {
+                mstore(0, 0x1111111111111111111111111111111111111111111111111111111111111111)
+            }
+        }
+  }
 }

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

@@ -10,6 +10,18 @@ contract Assembly {
       }
     }
   }
+
+  function caseAssembly() {
+    assembly {
+          switch value
+            case 0 {
+              mstore(0, 0x0000000000000000000000000000000000000000000000000000000000000000)
+            }
+            case 1 {
+                mstore(0, 0x1111111111111111111111111111111111111111111111111111111111111111)
+            }
+        }
+  }
 }
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 contract Assembly {
@@ -20,6 +32,18 @@ contract Assembly {
       }
     }
   }
+
+  function caseAssembly() {
+    assembly {
+      switch value
+        case 0 {
+          mstore(0, 0x0000000000000000000000000000000000000000000000000000000000000000)
+        }
+        case 1 {
+          mstore(0, 0x1111111111111111111111111111111111111111111111111111111111111111)
+        }
+    }
+  }
 }
 
 `;