vscode-postfix-dart
Postfix templates for Dart
Features
This extension features postfix templates that can be used to improve productivity.
It's been inspired on former, great TypeScript/JavaScript extension.
I find it annoying to jump the cursor back and forth whenever I want to perform some simple operations. This extension makes it easier. I use this feature on daily basis in C# but was missing it in Dart until now.
All available templates (expr means the expression on which the template is applied):
| Template |
Outcome |
| .if |
if (expr) |
| .else |
if (!expr) |
| .null |
if (expr == null) |
| .notnull |
if (expr != null) |
| .for |
for (var i = 0; i < expr.length; i++) |
| .forin |
for (let item in expr) |
| .foreach |
expr.forEach((item){} ) |
| .not |
!expr |
| .return |
return expr |
| .var |
var name = expr |
| .varType |
SomeType name = expr |
| .const |
const name = expr |
| .print |
print(expr) |
| .castis |
expr is SomeType |
| .castas |
expr as SomeTyp |
Custom templates (1.6.0 and above)
You can now add your own templates if the defaults are not enough. This will only work for simple ones as some templates require additional tricky handling.
To configure a template you need to set postfix.customTemplates setting. It's an array of the following objects:
{
"name": "...",
"description": "...",
"body": "...",
"when": ["..."]
}
name defines what will be the name of the suggestion
description will show additional optional description when suggestion panel is opened
body defines how the template will work (see below)
when defines conditions when the template should be suggested
Template body
Template body defines how will the expression before the cursor be replaced.
It supports standard Visual Studio Code Snippet syntax.
There is also one special placeholder that can be used:
{{expr}}: this will be replaced by the expression on which the template is applied so for example !{{expr}} will simply negate the expression
Template conditions
when condition can be zero or more of the following options:
identifier: simple identifier, ie. variableName (inside an if statement or function call arguments)expression: can be either a simple expression like object.property.value or array[index] or a combination of thembinary-expression: a binary expression, ie. x > 3, x * 100, x && yunary-expression: an unary expression, ie. !x, x++ or ++xfunction-call: a function call expression, ie. func(), object.method() and so on
If no conditions are specified then given template will be available under all possible situations
Configuration
This plugin contributes the following settings:
Known issues
Feel free to open issues for whatever you think may improve the extension's value. New ideas for more templates are also welcome. Most of them are pretty easy to implement.
