How to add Lua functions to the Notepad++ functionList.XML

Question

Notepad++ provides a function list.

I'm currently using Notepad++ 6.5

functionList.xml defines parsers for function names using regular expressions.

The following code defines the parser for c functions

<parser id="c_function" displayName="C source" commentExpr="((/\*.*?\*)/|(//.*?$))">
    <function
        mainExpr="^[\t ]*((static|const|virtual)[\s]+)?[\w:]+([\s]+[\w]+)?([\s]+|\*[\s]+|[\s]+\*|[\s]+\*[\s]+)([\w_]+[\s]*::)?(?!(if|while|for))[\w_]+[\s]*\([^\)\(]*\)([\s]*const[\s]*)?[\n\s]*\{"
        displayMode="$functionName">
            <functionName>
                <nameExpr expr="(?!(if|while|for))[\w_~]+[\s]*\("/>
                <nameExpr expr="(?!(if|while|for))[\w_~]+"/>
                </functionName>         </function>
</parser>

I tried my regex online and everything was fine. But it does not work for the functionList.xml somehow. The function list stays empty.

How would this look like for a Lua function?

Here's my try:

<parser id="lua_function" displayName="Lua Function" commentExpr="((--\[\[\*.*?\*)/|(--.*[\n\s\w\t]*\]\]))">
            <function
                mainExpr="^[\t\s]*(function)[\s]+[\w]+\("
                displayMode="$functionName">
                <functionName>
                    <nameExpr expr="(?:(function[\s]+))[\w]+"/>
                </functionName>
            </function>
        </parser>

Answer 1

I use my own definition for Notepad++. It's main difference is supporting of functions like:local SomeFunction = function() end and function SomeObject:Func() end. Also it has some basic lua table view compatibilitites.

<!-- Basic lua parser for functionList.xml in Notepad++ 6.5.3 -->
<!-- See http://notepad-plus-plus.org/features/function-list.html -->
<parser id="lua_function" displayName="Lua" commentExpr="--.*?$">
    <!-- Basic lua table view, nested lua table not supported -->
    <classRange
        mainExpr="[.\w]+[\s]*=[\s]*\{"
        openSymbole="\{"
        closeSymbole="\}"
        displayMode="node">
        <className>
            <nameExpr expr="[.\w]+"/>
        </className>
        <function
            mainExpr="[.\w]+[\s]*=[\s]*['&quot;]?[\w]+['&quot;]?">
            <functionName>
                <funcNameExpr expr=".*"/>
            </functionName>
        </function>
    </classRange>
    <!-- Basic lua functions support -->
    <function 
        mainExpr="(function[\s]+[.\w]+(:[\w]+)?)|([.\w]+[\s]*=[\s]*function)"
        displayMode="$className->$functionName">
        <functionName>
            <nameExpr expr="((?<=function)[\s]+[.:\w]+)|(([.\w]+)(?=([\s]*=[\s]*function)))"/>
        </functionName>
        <className>
            <nameExpr expr="[.\w]+(?=:)"/>
        </className>
    </function>
</parser>

Also add association

<association id="lua_function" langID="23" />

Answer 2

Two things i have experienced with lua and functions list is that i first have to use functionList.xml inside %appdata%\Notepad++ for it to work, but that could be my installation second is that whats missing from your configruations is 2 things. First the association langID = "23"

<associationMap>
  <association langID = "23" id="lua_function"/>
</associationMap>

second being regexp will miss local functions, mine currently looks like this

        <parser id="lua_function" displayName="Lua">
            <function mainExpr="^[\t|local\s]*function\s+[^0-9][_A-Za-z0-9]+\s*\("
                      displayMode="$functionName">
              <functionName>
                <nameExpr expr="[^0-9][_A-Za-z0-9]+\s*\("/>
                <nameExpr expr="[^0-9][_A-Za-z0-9]+"/>
              </functionName>
            </function>
         </parser>

adding both to functionList.xml (depending on installation, program files or %appdata%) will make functionlist work for lua language inside Notepad++ 6.5.1