Last update March 7, 2012

Language Devel / DIPs /
DIP14



Difference (last change) (no other diffs, normal page display)

Deleted: 89,199d88
jam tangan
jam tangan murah
jam tangan kw
hostgator coupon
kata mutiara
Jasa SEO
EZido
RDAnet
pioneer deh-1300mp
asus a53e-xa2
asus tf101-b1
asus tf101-a1
asus n53sv-eh72
asus republic of gamers g74sx
asus acer a5250
acer chromebook ac700
asus asus 53u
lg infinia 55lw5600
Sonicview 360 premier
asus 7 cu ft freezer
asus 30 single wall oven
brother cs6000i sewing machine
brother 1034d serger
brother sewing machines
Yokohama Geolandar H/T-S
crib tent tots in mind
kidco peapod plus
foscam fi8910w
samsung pl120 review
gopro helmet cam
Canon SX130IS
powershot s100
ContourHD 1080p
canon vixia hf r21
digital picture frame
canon ef 50mm f1.4
canon ef 70-300mm review
wide angle lenses
moving comfort sports bra
moving comfort bra
womens argyle sweater
bebe dresses
ViewSonic VX2250WM
Le Pan TC 970
Apple MacBook Air MC965LL
Sennheiser CX 880
plantronics cs540
ultrasonic jewelry cleaner
Sennheiser RS120
bose quietcomfort 15 acoustic noise cancelling headphones
logitech harmony one remote
logitech harmony 900
sony mhc-ec69i
sony mhcec909ip
bose wave music system
sony htss380
logitech squeezebox touch
sony dvp-fx970
onkyo tx-nr509
onkyo tx - nr609
onkyo ht-s3400
energy 5.1 take classic home theater system
polk audio psw505
onkyo ht-s5400
onkyo tx-nr709
belkin pf60
onkyo ht-rc360
denon avr-1912
Yamaha YHT-S400BL
fujitsu scansnap s1500
brother hl-2270dw
epson workforce 545
hp laserjet p2055dn
bushnell 8mp trophy cam
toshiba 32c110u
panasonic viera tc-p60s30
VIZIO E220VA
hauppauge wintv dcr-2650
Acer AM3970-U5022
Acer AspireRevo AR3700-U3002
Dell Inspiron i570
Dell GX620
Gateway FX6860-UR20P
Western Digital My Passport Essential SE 1 TB USB 3.0
Fujitsu ScanSnap S1300
Epson Perfection V300
Fujitsu SCANSNAP S1100
NeatDesk Desktop Scanner and Digital Filing System
Epson WorkForce Pro GT-S50
Kodak P811BK
Epson Perfection V330
Viewsonic VX2453MH
Asus VE228H
ViewSonic VA2431WM
Samsung B2230
HP 2711x
ASUS ML228H
Epson PowerLite Home Cinema 8350
Optoma PK301
Epson EX7210
Epson EX5210
ViewSonic PJD5133
Acer X1161P
FAVI RioHD-LED-2
Epson EX3210
ViewSonic PJD6531w
Trinity 360 Breville 800JEXL
Skil 3320-02
Delta 46-460
Grizzly G0555
Delta 18-900L

DIP14: Import path binding in source code

DIP:14
Title:Import path binding in source code
Version:1
Status:Draft
Created:2011-10-18
Last Modified:2011-10-18
Author:Martin Nowak
Links:Split of from DIP11

Abstract

Provide a language construct to declare import paths in source files.

Rationale

Declaring the location of dependencies should be done at the place where the dependency occurs. This reduces redundancy and maintenance effort. This is a requirement for DIP11.

Description

The specification for ImportDeclaration is extended as follows.

ModuleFullyQualifiedName:
        Identifier
        Expression of type String

Usage

module foo;
import "/path/bar.d";
import bar2="/path/bar2.d";
import "/path/bar3.d" : bar3fun;

void main()
{
  auto a = barfun();
  auto b = bar2fun();
  auto c = bar3fun();
}

This will not add a symbol bar to the current scope.

import "/path/bar.d"
An alternative would be to only allow alias imports.

Impact

Allowing an expression as module name does conflict with import bindings and alias imports.

@property string bar()
{
  return "/path/to/bar.d";
}
import bar;        // currently is an error due to name collision
static import bar; // ditto
import bar : fun;  // this would change it's behavior and evaluate bar
import baz = bar;  // ditto

Alternatives

It was proposed in DIP11 to add a new pragma(importpath, "ImportSpec") with the same rules as giving a command line import path.

This has two drawbacks. First one would need to statements to import a module.

pragma(importpath, "/path/to");
import bar;

Second using a pragma needs scoping rules. It was proposed that pragma(importpath) only be valid for that particular module. This has maintenance issues as every import from that path and the imported source themselves need to be kept in sync. One would need additional means to selectively transfer the import path to other modules.

Copyright

This document has been placed in the Public Domain.


FrontPage | News | TestPage | MessageBoard | Search | Contributors | Folders | Index | Help | Preferences | Edit

Edit text of this page (date of last change: March 7, 2012 20:40 (diff))