multiple if/else statements with different variables: vscode snippet

Question

I'm trying to write a snippet to make case-style statements in JavaScript quicker. Right now I have this, and it works:

    "long if-else": {
        "scope": "javascript,typescript,html",
        "prefix": "ie",
        "body": [
            "if ( $2 ) {\n\n} ${1/(.)/else if ( ) {\n\n} /g}else {\n\n}\n"
        ]
    }

it allows you to insert 0 or more else if statements in between the opening if and closing else by entering n characters after first tab and hitting tab again.

I would like the user (me) to be able to specify a value to go inside the brackets (like myVar =). I've tried setting up a variable to be evaluated after the transform, but it hasn't been read as a variable.

That is a very smart snippet use of the global flag. I don't understand what you are looking for in the question though. I thought you meant for the second tabstop but you mean in each else if set of brackets? — Mark
– Mark, Commented Apr 5, 2020 at 18:09
Thanks. Yes, you got it - I'd like to put the same value in all of the round brackets. — Ivo Evans Storrie
– Ivo Evans Storrie, Commented Apr 5, 2020 at 20:13
Of course, easy to /else if (myVar = ) {\n\n} / in your transform but you can't put a tabstop or a variable inside a transform, the grammar allows only text at this point. — Mark
– Mark, Commented Apr 5, 2020 at 21:24

Mark · Accepted Answer · 2020-04-05 22:44:19Z

You can't put a tabstop or another variable inside the replacement part of a transform.

You have to use a different approach if you want each if/else block to contain a different variable, like:

if (myVar == ) {

} else if (myVar == a) {

} else if (myVar == b) {

} else if (myVar == c) {

} else if (myVar == d) {

} else {

}

You have to list those variables first before generating each else if block. Try this snippet:

"long if-else": {
  "scope": "javascript,typescript,html",
  "prefix": "ie",
  "body": [

    "if (myVar = $2) {\n",

    "${1/(\\w+)(,\\s*|\\b)/} else if (myVar = $1) {${2:?\n\n:\n}/g}",

    "} else {",
    "",
    "}",
    "$3"
  ]
},

Here is a demo to see how you input the variables:

You enter each of the myVar's as a comma-separated list and then Tab. It doesn't handle the zero-case though without some more complications.

Nadim Al Abdou · Accepted Answer · 2020-04-05 19:09:39Z

0

i'm not very sure that this what you are looking for ( may be ) like this

"long if-else": {
    "scope": "javascript,typescript,html",
    "prefix": "ie",
    "body": [
        "if ( ${myVar} ) {\n\n} ${1/(.)/else if ( ) {\n\n} /g}else {\n\n}\n"
    ]
}

using this way the user (you) will have something like

if ( myVar ) {

 } else {

 }

answered Apr 5, 2020 at 19:09

Nadim Al Abdou

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