Visual Basic - EBNF and Railroad

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EBNF

Definitions:

Digit = 0|1|2|3|4|5|6|7|8|9

Character = a|b|c|d|e|f|g|h|i|k|l|m|n|o|p|q|r|s|t|u|v|w|x|y|z|A|B|C|

D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W|X|Y|Z

Special character (including "space")

space + - * / = < > [ ] . , ( ) : ^ @ { } $ # & %

Identifier = Character { Character | Digit } (Identifiers are Variable names)

String = Character { Special character | Character | Digit }

Declaration of variables:

Machine generated alternative text:
CustomEventMemberDeclaration
Attributes? EventModifiers* Identifier TypeName ImplementsCIause? StatementTerminator EventAccessorDecIaration+
StatementTer minator
(used in EventMemberDec/aration)
oxOOA>
Del g
Never empty
MayStartWith:
MayaeFoIIowedBy: public
Oxooo>
Oxon
oxaoaE>
oxaoagy <
-caly

Grammar vb10

https://msdnshared.blob.core.windows.net/media/MSDNBlogsFS/prod.evol.blogs.msdn.com/CommunityServer.Blogs.Components.WeblogFiles/00/00/01/12/06/7120.vb10.html

Screen clipping taken: 11/10/2018 10:00 AM

DimStatement = <AccessModifier> <Identifier> As <DataType>

{<AccessModifier> <Identifier> As <DataType>}

Machine generated alternative text:
—pub
lic Class
Forml
Dim Tot As Integer
Dim Nol As Integer
Dim N02 As Integer
Din* N03 As Integer
Ii Class
Forml
Private
Private
Private
Private
Tot
No I
No 2
No 3
As
As
As
As
Integer
Integer
Integer
Integer

Concatenation:

String = Character { Special character | Character | Digit }

Text block = " <string> "

Final statement = [<Text block> ] [& {<identifier> | <Text block>}]

Message (print to screen) statements:

Text block = " <string> "

Message Box = MsgBox( [<Text block> ] [& {<identifier> | <Text block>}] )

Assignment:

<identifier> = <Text block> | <identifier> {<Text block> | <identifier>}] ;

Condition (evaluates to true or false):

(<identifier> ==|===|<|> <Text block> | <identifier> )

And you could have:

<condition> =(<condition> || <condition> AND <condition> )

( || means OR)

Statement - block of code to be executed

Machine generated alternative text:
e ßlNT

"IF" statement:

Railroad:

Definitions:

N 人 X ^ C ↓ 0 日 0 Z 1 ) 「
く P 「い C95 代
′ ・つ物当っー物・つ・ J
ノつテつ ′ つ
X 9 ョョ 0 つ日 >
4 ! 6 ℃

String:

Machine generated alternative text:

Identifier (Identifiers are Variable names)

Machine generated alternative text:

letter
letter
( digit

Declaration of variables:

Data types:

Machine generated alternative text:
Tre

DimStatement=

Machine generated alternative text:
Cie

Machine generated alternative text:
—pub
lic Class
Forml
Dim Tot As Integer
Dim Nol As Integer
Dim N02 As Integer
Din* N03 As Integer
Ii Class
Forml
Private
Private
Private
Private
Tot
No I
No 2
No 3
As
As
As
As
Integer
Integer
Integer
Integer

Or

DimStatement =

Machine generated alternative text:
def
cees$
Type

Machine generated alternative text:
public Class Forml
Private Tot, TotP, Mol, N02, N03 As Integer
private StrSu• AS String

Concatenation:

Machine generated alternative text:

Message (print to screen) statements:

Machine generated alternative text:
4

Assignment:

Condition (evaluates to true or false):

(<identifier> ==|===|<|> <Text block> | <identifier> )

And you could have:

<condition> =(<condition> || <condition> AND <condition> )

( || means OR)

Statement - block of code to be executed

Machine generated alternative text:
e ßlNT

"IF" statement: