Add support for inline-declared variables #973
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ghaith
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ghaith
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Oct 18, 2023
Variables can be defined in the body using the syntax
```st
{def} VAR y : DINT := 0; (*Pragma to avoid confusion with var blocks *)
(*Pragma is optional once in body*)
VAR x := 0; (*Implicit type declaration to DINT*)
FOR VAR x := 0 TO 10 BEGIN
(*Implicit variable declaration as loop counter*)
END_FOR
```
Ref: #973
ghaith
pushed a commit
that referenced
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Oct 24, 2023
Variables can be defined in the body using the syntax
```st
{def} VAR y : DINT := 0; (*Pragma to avoid confusion with var blocks *)
(*Pragma is optional once in body*)
VAR x := 0; (*Implicit type declaration to DINT*)
FOR VAR x := 0 TO 10 BEGIN
(*Implicit variable declaration as loop counter*)
END_FOR
```
Ref: #973
ghaith
pushed a commit
that referenced
this issue
Nov 10, 2023
Variables can be defined in the body using the syntax
```st
{def} VAR y : DINT := 0; (*Pragma to avoid confusion with var blocks *)
(*Pragma is optional once in body*)
VAR x := 0; (*Implicit type declaration to DINT*)
FOR VAR x := 0 TO 10 BEGIN
(*Implicit variable declaration as loop counter*)
END_FOR
```
Ref: #973
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Is your feature request related to a problem? Please describe.
As part of #947 it makes sense to support on the fly declaration of temporary variables for all languages
Describe the solution you'd like
In ST these variables would then have to be marked with a Pragma, and in general will behave as temp variable. They come into scope on the line they are declared in. And out of scope if their parent scope is also going out of scope (Control statements).
A declaration can look like this:
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