Add parsing for object types

test/mjsunit/harmony/typesystem/typegen.js

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 
 load("test/mjsunit/harmony/typesystem/testgen.js");
 
 
 // In the rest, for each NonTerminal symbol in the parser grammar that we
 // care to test, there are two generator functions (ValidNonTerminal and
@@ skipping 13 matching lines @@
     new TestGen(1, ValidTypes, [
       t => "(" + t + ")"
     ]),
     new TestGen(1, ValidPrimaryTypes, [
       t => t + "[]",
       t => t + "[][]",
       t => "(" + t + "[])",
       t => "(" + t + "[])[]",
     ]),
     new TestGen(1, ValidTupleTypes, [t => t]),
+    new TestGen(1, ValidObjectTypes, [t => t]),
     proper && "number",
     proper && "boolean",
     proper && "string",
     proper && "symbol",
     // Type references
     "A",
     "Tree<number>",
     "Map<string, number>",
     // Type queries
     "typeof x",
@@ skipping 10 matching lines @@
     new TestGen(1, InvalidTypes, [
       t => "(" + t + ")"
     ]),
     new TestGen(1, InvalidPrimaryTypes, [
       t => t + "[]",
       t => t + "[][]",
       t => "(" + t + "[])",
       t => "(" + t + "[])[]",
     ]),
     new TestGen(1, InvalidTupleTypes, [t => t]),
+    new TestGen(1, InvalidObjectTypes, [t => t]),
     // Line terminator in arrays.
     new TestGen(1, ValidTypes, [
       t => "(" + t + "\n[])"
     ]),
     // Type references
     "Map<string, (number, void)>",
     "number<string>",
     "Foo<>",
     // Type queries
     "typeof",
@@ skipping 73 matching lines @@
     new TestGen(1, ValidTypes, [
       t => c + "() => " + t,
       t => c + "(a: " + t + ") => " + t,
       t => c + "(a:" + t + ", b?:" + t + ") => " + t,
       t => c + "(a:" + t + ", b?:" + t + ", c) => " + t,
       t => c + "(a:" + t + ", b?:" + t + ", c?) => " + t,
       t => c + "(a:" + t + ", b:" + t + ", c, ...d) => " + t,
       t => c + "(a:" + t + ", b:" + t + ", c, ...d) => " + t,
       t => c + "(a:" + t + ", b:" + t + ", c, ...d: string[]) => " + t
     ]),
-    // Parametric function types
+    // Parametric function types.
     "<A> (x: A) => A",
     "<A extends string> (x: A) => A",
     "<A, B> (x: A, y: B) => A",
     "<A, B extends number[], C> (x: A, y: B) => C",
     "<A, B, C, D> (x: A, y: B, z: C[], d: (e: D) => D) => A",
-    // String literal types
+    // String literal types.
     "(cmd: 'add', x: number, y: number) => number",
     '(cmd: "sum", a: number[]) => number',
     "(x: number, cmd: 'one', ...rest) => any",
     "(x: string, y: number, cmd: 'two', ...rest) => any",
-    "(x: number, cmd?: 'two', ...rest) => string"
+    "(x: number, cmd?: 'two', ...rest) => string",
+    // With binding patterns.
+    "([]: number[]) => boolean",
+    "([x, y]: number[]) => boolean",
+    "([x, ...rest]: number[]) => boolean",
+    "([,x, y]: number[]) => boolean",
+    "([x, y,]: number[]) => boolean",
+    "([x, y,,]: number[]) => boolean",
+    "([x, [a, b, c], z]: [number, any[], string]) => boolean",
+    "({x: a, y: b}: {x: number, y: string}) => boolean",
+    "({x: a, y: [b, c, ...rest]}: {x: number, y: string[]}) => boolean",
+    "({x: {a, b}, y: c}: {x: {a, b}, y: string}) => boolean"
   ]);
 }
 
 function InvalidFunctionTypes(size, constr) {
   let c = constr ? "new " : "";
   return Generate(size, [
     // Illegal types in legal places.
     new TestGen(1, InvalidTypes, [
       t => c + "() => " + t,
       t => c + "(a: " + t + ") => " + t,
       t => c + "(a:" + t + ", b?:" + t + ") => " + t,
       t => c + "(a:" + t + ", b?:" + t + ", c) => " + t,
       t => c + "(a:" + t + ", b?:" + t + ", c?) => " + t,
       t => c + "(a:" + t + ", b:" + t + ", c, ...d) => " + t,
       t => c + "(a:" + t + ", b:" + t + ", c, ...d) => " + t,
       t => c + "(a:" + t + ", b:" + t + ", c, ...d: string[]) => " + t,
     ]),
-    // Parametric function types
+    // Parametric function types.
     "<A> A[]",
     "<> (x: number) => number",
-    "<A extends ()> (x: A) => A"
+    "<A extends ()> (x: A) => A",
+    // With illegal binding patterns.
+    "({x: {a; b}, y: c}: {x: {a; b}, y: string}) => boolean"
   ]);
 }
 
 
 // Tuple types.
 
 function ValidTupleTypes(size) {
   return Generate(size, [
     new TestGen(1, ValidTypes, [
       t => "[" + t + "]",
@@ skipping 17 matching lines @@
     new TestGen(1, ValidTypes, [t => "[" + t + ",,]"]),
     new TestGen(1, ValidTypes, [t => "[," + t + "]"]),
     new TestGen(1, ValidTypes, [t => "[,," + t + "]"]),
     new TestGen(1, ValidTypes, [t => "[" + t + ",," + t + "]"]),
     new TestGen(1, ValidTypes, [t => "[..." + t + "]"]),
     new TestGen(1, ValidTypes, [t => "[" + t + ", ..." + t + "]"]),
   ]);
 }
 
 
+// Object types.
+
+function ValidObjectTypes(size) {
+  return Generate(size, [
+    // Empty object type.
+    "{}",
+    // Property signatures.
+    "{a}",
+    "{a, b}",
+    "{a, b?}",
+    "{a?, b}",
+    new TestGen(1, ValidTypes, [
+      t => "{a: " + t + "}",
+      t => "{a: " + t + ", b: " + t + "}",
+      t => "{a?: " + t + "}",
+      t => "{a: " + t + ", b?: " + t + "}",
+    ]),
+    // Method signatures.
+    "{f()}",
+    "{f?()}",
+    "{f(a)}",
+    "{f?(a)}",
+    "{f(a, b)}",
+    "{f?(a, b)}",
+    new TestGen(1, ValidTypes, [
+      t => "{f() : " + t + "}",
+      t => "{f?() : " + t + "}",
+      t => "{f(a: " + t + ")}",
+      t => "{f?(a: " + t + ")}",
+      t => "{f(a: " + t + ") : " + t + "}",
+      t => "{f?(a: " + t + ") : " + t + "}",
+      t => "{f<A>(a: " + t + ")}",
+      t => "{f?<A>(a: " + t + ")}",
+      t => "{f<A, B>(a: A, b: " + t + ") : B}",
+      t => "{f?<A, B>(a: A, b: " + t + ") : B}",
+      t => "{f<A extends " + t + ">(a: " + t + ")}",
+      t => "{f?<A extends " + t + ">(a: " + t + ")}",
+      t => "{f<A extends " + t + ", B>(a: A, b: " + t + ") : B}",
+      t => "{f?<A extends " + t + ", B>(a: A, b: " + t + ") : B}",
+      t => "{f<A extends " + t + ">(a: " + t + ") : " + t + "}",
+      t => "{f?<A extends " + t + ">(a: " + t + ") : " + t + "}"
+    ]),
+    // Call signatures.
+    "{()}",
+    "{(a)}",
+    "{(a, b)}",
+    new TestGen(1, ValidTypes, [
+      t => "{() : " + t + "}",
+      t => "{(a: " + t + ")}",
+      t => "{(a: " + t + ") : " + t + "}",
+      t => "{<A extends " + t + ">(a: " + t + ")}",
+      t => "{<A extends " + t + ">(a: " + t + ") : " + t + "}"
+    ]),
+    // Constructor signatures.
+    "{new ()}",
+    "{new (a)}",
+    "{new (a, b)}",
+    new TestGen(1, ValidTypes, [
+      t => "{new () : " + t + "}",
+      t => "{new (a: " + t + ")}",
+      t => "{new (a: " + t + ") : " + t + "}",
+      t => "{new <A extends " + t + ">(a: " + t + ")}",
+      t => "{new <A extends " + t + ">(a: " + t + ") : " + t + "}"
+    ]),
+    // Index signatures.
+    "{[a: number]}",
+    "{[a: string]}",
+    new TestGen(1, ValidTypes, [
+      t => "{[a: number] : " + t + "}",
+      t => "{[a: string] : " + t + "}"
+    ])
+  ]);
+}
+
+function InvalidObjectTypes(size) {
+  return Generate(size, [
+    // Illegal types in legal places.
+    new TestGen(1, InvalidTypes, [
+      t => "{a: " + t + "}",
+      t => "{a: " + t + ", b?: " + t + "}",
+      t => "{f() : " + t + "}",
+      t => "{f(a: " + t + ")}",
+      t => "{f<A extends " + t + ">()}",
+      t => "{(a: " + t + ")}",
+      t => "{new () : " + t + "}"
+    ]),
+    // Valid binding patterns that are not tuple types.
+    "{a: []}",
+    "{a: [...rest]}",
+    // Invalid index signatures.
+    "{[a: any]}",
+    "{[a: any] : number}"
+  ]);
+}
+
+
 // All types: simple, type references, type parametric, type queries
 // and tuples.
 
 function ValidTypes(size) {
   return Generate(size, [
     new TestGen(1, ValidUnionTypes, [t => t]),
     new TestGen(1, ValidFunctionTypes, [t => t], false),
   ]);
 }
 
 function InvalidTypes(size) {
   return Generate(size, [
     new TestGen(1, InvalidUnionTypes, [t => t]),
     new TestGen(1, InvalidFunctionTypes, [t => t], false),
   ]);
 }