Regex for Function List in User Defined Language (Business Rules!)

John Bowman

I am trying to set up functionList.xml for my user defined language. I need help with the regular expressions. I would be very grateful if someone could assist me. Here are some details and examples:

Functions are defined with the (always case insensitive) word “def” and may or may not be preceeded by a 5 digit number. all function names must start with “fn”
If a function has parameters they are included in parenthesis after the function name. Parameters will be separated by commas. However one semi-colon may seperate all the optional parameters from the required ones (instead of a comma). Spaces may appear in many places within the syntax, but not in the function name and can pretty much be ignored.

Examples

def fnwhat3ver
00100 def fnAnotherExample
DEF FNwithParameters(arg_number,arg_string$)
def fnX
00200 Def FnWithOptional(par_12;par_option_3)
00200 Def FnWithOptional(par_12, arg_xyz, another_parameter ; par_option_3)

I really appreciate any help on this matter. I am a long time user and lover of Notepad++ and hope to implement this feature for myself and to win over some new n++ users whom also use this Business Rules! language.

-John

donho

Hi John,

User Defined Language doesn’t support (yet) regex.
So in your cas, you can only colourise def (or DEF).

I’ll do a feature request to Loreia (the person who develops and maintains UDL), but it will not be soon even the FR is accepted.

John Bowman

Oh - I’m not trying to colorize it. I’m trying to make them appear in the functionlist side bar. :)

donho

Oups sorry, I misunderstand you totally.

Each function takes only one line and whole line?

donho

John,

Try this one:
([0-9][0-9][0-9][0-9][0-9][ ]|)(def|DEF) [\w]+($.*$|)

John Bowman

oh it’s getting really close! I don’t fully understand everything I am doing. But here’s what I’ve got so far. I’va added these lines:

  <association userDefinedLangName="BR! Source" id="brs_function"/>

and

		<parser id="brs_function" displayName="BR! Source">
			<function mainExpr="([0-9][0-9][0-9][0-9][0-9][ ]|)(def|DEF) [\w]+(\(.*\)|)" displayMode="$className->$functionName">
			</function>
		</parser>

It encounters the first function in the program then and doesn’t stop… it thinks the rest of the program is a function. I need it to stop at the first “)”, “!” or CRLF (whichever of the three comes first) … I might have formatted my parser stuff wrong too… I didn’t know what to do with the <functionName> section so i just took it out… may have been a bad idea.

John Bowman

a little more clarification:

the function definition will always be on one line. the name ends at the first = or (. the variables passed to it (if any) start at the ( and end at the ) and are comma or semicolon delimited. (variables may include characters: a-z,A-Z,_,$,1-9 and &)

another kink:

the function definition line may or may not have the word “library” after the def before the function name. for example:

examples:

def library fnsteve
def fnsteve
def fnsteve(; x,y)
DEF LIBRARY FNSTEVE( x; y,e3$)
Def Fnsteve=13
Def Fnsteve=x12+rnd
01020 def library fnsteve
01030 def fnsteve
01040 def fnsteve(; x,y)
01080 DEF LIBRARY FNSTEVE( x; y,e3$)
01022 Def Fnsteve=13
41020 Def Fnsteve=x12+rnd

In all of these fnsteve would be the function name. In some of these variables passed are like x, y and e3$.

donho

Try this one:
([0-9][0-9][0-9][0-9][0-9][ ]|)(def|DEF)( library| LIBRARY|) [\w]+($.*$|=.+|)

John Bowman

Closer still!!

That works beautifully until it encounters a ; then it puts everything on the same line… And also I failed to mention * may be in the variable parameter list… here is a better test list:

def fnwhatever (x,y,x)
fnend
def fn_another
fnend
def fnyeah$(nope)
fnend
100 def fnyop
200 fnend
300 def fnok
def library fnwhatever (x,y,x)
fnend
def library fn_another
fnend
def library fnyeah$(nope)
fnend
100 def library fnyop
200 fnend
300 def library fnok
def library fnsteve
def fnsteve

def fntestastrisk(x$*20,big$*2048)

def fnsteve(; x,y)
DEF LIBRARY FNSTEVE( x; y,e3$)
Def Fnsteve=13
Def Fnsteve=x12+rnd
01020 def library fnsteve
01030 def fnsteve
01040 def fnsteve(; x,y)
01080 DEF LIBRARY FNSTEVE( x; y,e3$)

John Bowman

oh geeze I forgot the &s. & may preceed any or all variables in the line. it’s allowed.

i.e.

def fnwhatever(x; &no,more, &spaceallowed)

donho

@John-Bowman said:

That works beautifully until it encounters a ; then it puts everything on the same line…

A screenshot will explain everything.

donho

Otherwise, you can try this one:
([0-9][0-9][0-9][0-9][0-9][ ]|)(def|DEF)( library| LIBRARY|) \w+\$?[ ]*($.*$|=.+|)

MAPJe71

Alternative:
(?i)(\d{3,5}[\t ]+)?DEF([\t ]+LIBRARY)?[\t ]+FN\w+\$?[\t ]*($[^)]*$|=)?

John Bowman

@donho yours was really close but it was adding everything to the end of the first line when it encounterd a $ for some reason.

@MAPJe71 WORKS GREAT!!!

I now have all my function lines listed in my Function List! Wonderful - I can double click on them and get right to them! SPECTACULAR!

So - one follow detail though - Is it possible for me to get the parameters as auto-complete things when typing code?

Here is what I have right now:

		<parser id="brs_function" displayName="BR! Source">
			<function mainExpr="(?i)(\d{3,5}[\t ]+)?DEF([\t ]+LIBRARY)?[\t ]+FN\w+\$?[\t ]*(\([^)]*\)|=)?" displayMode="$className->$functionName">
			</function>
		</parser>

I notice most the other parser sections have a <functionName> part too - but I don’t… I’m really REALLY happy with what I have right now - but if I can take it a step farther I don’t want to miss out on all the fun =)

MAPJe71

The Function List parsers are used to populate the Function List tree view only.
Auto-Complete has its separate configuration files in the Plugins\APIs sub-folder, but I don’t know if it works for user defined languages. You could try by adding the applicable brs.xml.

The <functionName> part is used to filter/resolve the function name e.g.

<functionName>
    <nameExpr expr="(?i)FN\w+\$?[\t ]*(\([^)]*\))?" />
    <!-- comment out the following node to display the method with its parameters -->
    <nameExpr expr="(?i)FN\w+\$?" />
</functionName>

John Bowman

you are correct. and yes, it does work with the UDLs. I have that working, but was only asking if I could use the cool regex syntax detecting settings in functionList.xml to accomplish the same thing. Perhaps I could do it more auto-magically over in there, but that is a subject for another thread. I’m going mark this bad boy solved. THANK YOU!!!