v8/test/mjsunit/harmony/module-parsing.js
rossberg@chromium.org ab26fb6b21 Implement rudimentary module linking.
Constructs the (generally cyclic) graph of module instance objects
and populates their exports. Any exports other than nested modules
are currently set to 'undefined' (but already present as properties).

Details:
- Added new type JSModule for instance objects: a JSObject carrying a context.
- Statically allocate instance objects for all module literals (in parser 8-}).
- Extend interfaces to record and unify concrete instance objects,
  and to support iteration over members.
- Introduce new runtime function for pushing module contexts.
- Generate code for allocating, initializing, and setting module contexts,
  and for populating instance objects from module literals.
  Currently, all non-module exports are still initialized with 'undefined'.
- Module aliases are resolved statically, so no special code is required.
- Make sure that code containing module constructs is never optimized
  (macrofy AST node construction flag setting while we're at it).
- Add test case checking linkage.

Baseline: http://codereview.chromium.org/9722043/

R=svenpanne@chromium.org,mstarzinger@chromium.org
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9844002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11336 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2012-04-16 14:43:27 +00:00

160 lines
3.0 KiB
JavaScript

// Copyright 2012 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Flags: --harmony-modules
// Test basic module syntax, with and without automatic semicolon insertion.
module A {}
module A1 = A
module A2 = A;
module A3 = A2
module B {
export vx
export vy, lz, c, f
var vx
var vx, vy;
var vx = 0, vy
let lx, ly
let lz = 1
const c = 9
function f() {}
module C0 {}
export module C {
let x
export module D { export let x }
let y
}
let zz = ""
export var x0
export var x1, x2 = 6, x3
export let y0
export let y1 = 0, y2
export const z0 = 0
export const z1 = 2, z2 = 3
export function f0() {}
export module M1 {}
export module M2 = C.D
export module M3 at "http://where"
import i0 from I
import i1, i2, i3, M from I
//import i4, i5 from "http://where"
}
module I {
export let i0, i1, i2, i3;
export module M {}
}
module C1 = B.C;
module D1 = B.C.D
module D2 = C1.D
module D3 = D2
module E1 at "http://where"
module E2 at "http://where";
module E3 = E1
// Check that ASI does not interfere.
module X
{
let x
}
module Y
=
X
module Z
at
"file://local"
import
vx
,
vy
from
B
module Wrap {
export
x
,
y
export
var
v1 = 1
export
let
v2 = 2
export
const
v3 = 3
export
function
f
(
)
{
}
export
module V
{
}
}
export A, A1, A2, A3, B, I, C1, D1, D2, D3, E1, E2, E3, X, Y, Z, Wrap, x, y, UU
// Check that 'module' still works as an identifier.
var module
module = {}
module["a"] = 6
function module() {}
function f(module) { return module }
try {} catch (module) {}
module
v = 20