[Feat] diagnosis warn not allow `if ()` line has `Return` / `msgBox`

[CoffeeChaton]

Feat Provide

🔎 Search keywords

diag
#34

💻 Exp Code

#Warn All, MsgBox

fn(A_LineNumber, 1) ; b is 1
fn(A_LineNumber, 0) ; b is 1
fn(A_LineNumber, -1) ; b is 1

fn2(A_LineNumber, 1) ; b is 1
fn2(A_LineNumber, 0) ; b is 0
fn2(A_LineNumber, -1) ; b is 0

fn(user_LineNumber, c) {
    b := 0
    if (c>0) b := 1 ; TODO diag this case at ahk-v1 allow run this `b := 1` or auto format and add \n of this ?
        MsgBox, % "always run this line"
    MsgBox, % "b is " b " at ln " user_LineNumber
}

fn2(user_LineNumber, c) {
    b := 0
    if (c>0)
        b := 1 
    MsgBox, % "always run this line"
    MsgBox, % "b is " b " at ln " user_LineNumber
}

#Requires AutoHotkey v1.1.33+
; #Warn All, MsgBox

MsgBox, % foo(99) ; just 99 -> "caseEnd" , but not has "ELSE"
MsgBox, % foo(0) ; just "caseEnd", not "ELSE"
MsgBox, % foo(1) ; just "caseEnd", not "ELSE"
MsgBox, % foo(2) ; just "caseEnd", not "ELSE"
MsgBox, % foo(3) ; just "caseEnd", not "ELSE"
MsgBox, % foo(4) ; just "caseEnd", not "ELSE"

;@ahk-neko-format-ignore-start
foo(var1) {
    if (var1 = 99), Return "Case99"
        MsgBox, % "99"
    
    if (var1 = 0) , Return "caseA"
    if (var1 = 1) , Return "caseB"
    if (var1 = 2) , Return "caseC"
    if (var1 = 3) , Return "caseD"

    MsgBox, % "ELSE"
    Return "caseEnd"
}
;@ahk-neko-format-ignore-end

#Requires AutoHotkey v1.1.33+
; #Warn All, MsgBox

MsgBox, % foo(99) 
MsgBox, % foo(0) 
MsgBox, % foo(1) 
MsgBox, % foo(2) 
MsgBox, % foo(3)
MsgBox, % foo(4)

;@ahk-neko-format-ignore-start
foo(var1) {
    if (var1 = 99) Return "Case99"
        MsgBox, % "99"
    
    if (var1 = 0)  Return "caseA"
    if (var1 = 1)  Return "caseB"
    if (var1 = 2)  Return "caseC"
    if (var1 = 3)  Return "caseD"

    MsgBox, % "ELSE"
    Return "caseEnd"
}
;@ahk-neko-format-ignore-end

Additional context

1. Basic syntax errors , like this case
2. complex logic with code

I want to focus on complex cases instead of being bothered by basic syntax errors.