Disallow dot in inline assembly identifiers.

test/libsolidity/syntaxTests/inlineAssembly/invalid/dot_in_fun_param.sol

@@ -0,0 +1,12 @@
+contract C {
+  function f() public pure {
+    assembly {
+      function f(a., x.b) -> t.b, b.. {}
+    }
+  }
+}
+// ----
+// DeclarationError 3927: (74-76): User-defined identifiers in inline assembly cannot contain '.'.
+// DeclarationError 3927: (78-81): User-defined identifiers in inline assembly cannot contain '.'.
+// DeclarationError 3927: (86-89): User-defined identifiers in inline assembly cannot contain '.'.
+// DeclarationError 3927: (91-94): User-defined identifiers in inline assembly cannot contain '.'.

test/libsolidity/syntaxTests/inlineAssembly/invalid/dot_in_fundecl.sol

@@ -0,0 +1,11 @@
+contract C {
+  function f() public pure {
+    assembly {
+      function f.() {}
+      function g.f() {}
+    }
+  }
+}
+// ----
+// DeclarationError 3927: (63-79): User-defined identifiers in inline assembly cannot contain '.'.
+// DeclarationError 3927: (86-103): User-defined identifiers in inline assembly cannot contain '.'.

test/libsolidity/syntaxTests/inlineAssembly/invalid/dot_in_multi_vardecl.sol

@@ -0,0 +1,11 @@
+contract C {
+  function f() public pure {
+    assembly {
+      function f() -> x, y, z {}
+      let a., aa.b := f()
+    }
+  }
+}
+// ----
+// DeclarationError 3927: (100-102): User-defined identifiers in inline assembly cannot contain '.'.
+// DeclarationError 3927: (104-108): User-defined identifiers in inline assembly cannot contain '.'.

test/libsolidity/syntaxTests/inlineAssembly/invalid/dot_in_vardecl.sol

@@ -0,0 +1,15 @@
+contract C {
+  function f() public pure {
+    assembly {
+      let a. := 2
+      let a.. := 2
+      let a.b := 2
+      let a..b := 2
+    }
+  }
+}
+// ----
+// DeclarationError 3927: (67-69): User-defined identifiers in inline assembly cannot contain '.'.
+// DeclarationError 3927: (85-88): User-defined identifiers in inline assembly cannot contain '.'.
+// DeclarationError 3927: (104-107): User-defined identifiers in inline assembly cannot contain '.'.
+// DeclarationError 3927: (123-127): User-defined identifiers in inline assembly cannot contain '.'.

test/libsolidity/syntaxTests/inlineAssembly/invalid/identifier_starting_with_dot.sol

@@ -0,0 +1,9 @@
+contract C {
+  function f() public pure {
+    assembly {
+      let a, .a, aa.b := f()
+    }
+  }
+}
+// ----
+// ParserError 2314: (70-71): Expected identifier but got '.'

test/libsolidity/syntaxTests/inlineAssembly/shadowing/name_clash_in_import.sol

@@ -15,4 +15,5 @@ contract B {
 }
 // ----
 // DeclarationError 3859: (b:105-106): This declaration shadows a declaration outside the inline assembly block.
+// DeclarationError 3927: (b:128-131): User-defined identifiers in inline assembly cannot contain '.'.
 // DeclarationError 3859: (b:128-131): The prefix of this declaration conflicts with a declaration outside the inline assembly block.

test/libsolidity/syntaxTests/inlineAssembly/shadowing/no_name_clash_in_import.sol

@@ -9,7 +9,6 @@ contract B {
     function f() public pure {
         assembly {
             let A := 1
-            let A.b := 2
         }
     }
 }

test/libsolidity/syntaxTests/inlineAssembly/shadowing/qualified_names.sol

@@ -10,5 +10,7 @@ contract C {
     }
 }
 // ----
+// DeclarationError 3927: (115-118): User-defined identifiers in inline assembly cannot contain '.'.
 // DeclarationError 3859: (115-118): The prefix of this declaration conflicts with a declaration outside the inline assembly block.
+// DeclarationError 3927: (140-143): User-defined identifiers in inline assembly cannot contain '.'.
 // DeclarationError 3859: (140-143): The prefix of this declaration conflicts with a declaration outside the inline assembly block.