448b620dad
All module expressions, and all variables that might refer to modules, are assigned interfaces (module types) that are resolved using unification. This is necessary to deal with the highly recursive nature of ES6 modules, which does not allow any kind of bottom-up strategy for resolving module names and paths. Error messages are rudimental right now. Probably need to track more information to make them nicer. R=svenpanne@chromium.org BUG=v8:1569 TEST= Review URL: https://chromiumcodereview.appspot.com/9615009 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10966 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
140 lines
4.1 KiB
JavaScript
140 lines
4.1 KiB
JavaScript
// Copyright 2012 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Flags: --harmony-modules --harmony-scoping
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// Test basic module interface inference.
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"use strict";
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print("begin.")
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export let x = print("0")
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export module B = A.B
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export module A {
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export let x = print("1")
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export let f = function() { return B.x }
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export module B {
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module BB = B
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export BB, x
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let x = print("2")
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let y = print("3")
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let Ax = A.x
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let ABx = A.B.x
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let Ay = A.y
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let BBx = BB.x
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let Af = A.f
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function f(x,y) { return x }
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}
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export let y = print("4")
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let Ax = A.x
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let Bx = B.x
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let ABx = A.B.x
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module C {
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export let z = print("5")
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export module D = B
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// TODO(rossberg): turn these into proper negative test cases once we have
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// suitable error messages.
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// import C.z // multiple declarations
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import x from B
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}
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module D {
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// TODO(rossberg): Handle import *.
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// import A.* // invalid forward import
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}
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module M {}
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// TODO(rossberg): Handle import *.
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// import M.* // invalid forward import
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let Cz = C.z
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let CDx = C.D.x
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}
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export module Imports {
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module A1 {
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export module A2 {}
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}
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module B {
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// TODO(rossberg): Handle import *.
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// import A1.*
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// import A2.* // unbound variable A2
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}
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}
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export module E {
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export let xx = x
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export y, B
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let Bx = B.x
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// TODO(rossberg): Handle import *.
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// import A.*
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}
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export module M1 {
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export module A2 = M2
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}
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export module M2 {
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export module A1 = M1
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}
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// TODO(rossberg): turn these into proper negative test cases once we have
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// suitable error messages.
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// module W1 = W2.W
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// module W2 = { export module W = W3 }
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// module W3 = W1 // cyclic module definition
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// module W1 = W2.W3
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// module W2 = {
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// export module W3 = W4
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// export module W4 = W1
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// } // cyclic module definition
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// TODO(rossberg): Handle import *.
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//module M3B = M3.B
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//export module M3 {
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// export module B { export let x = "" }
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// module C1 = { import M3.* }
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// module C2 = { import M3.B.* }
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// module C3 = { import M3B.* }
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// module C4 = { export x import B.* }
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//// TODO(rossberg): turn these into proper negative test cases once we have
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//// suitable error messages.
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//// export module C5 = { import C5.* } // invalid forward import
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//// export module C6 = { import M3.C6.* } // invalid forward import
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//}
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export module External at "external.js"
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export module External1 = External
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export module ExternalA = External.A
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export module InnerExternal {
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export module E at "external.js"
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}
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export module External2 = InnerExternal.E
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//export let xxx = InnerExternal.E.A.x
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print("end.")
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