complete.vim

vim的自动配置文件

        let s:CACHE_TAG_FILES = {}
        return 1
    endif

    let result = 0
    for tagFile in tagfiles()
        if has_key(s:CACHE_TAG_FILES, tagFile)
            let currentFiletime = getftime(tagFile)
            if currentFiletime > s:CACHE_TAG_FILES[tagFile]
                " The file has changed, updating the cache
                let s:CACHE_TAG_FILES[tagFile] = currentFiletime
                let result = 1
            endif
        else
            " We store the time of the file
            let s:CACHE_TAG_FILES[tagFile] = getftime(tagFile)
            let result = 1
        endif
    endfor
    return result
endfunc
" Initialization
call s:HasATagFileOrTagEnvChanged()

" Filter same function signatures of base classes
function! s:FilterOverloadedFunctions(tagPopupList)
    let result = []
    for tagPopupItem in a:tagPopupList
        if has_key(tagPopupItem, 'kind') && index(['f', 'p'], tagPopupItem.kind[0])>=0 && has_key(tagPopupItem, 'signature')
            if !has_key(s:CACHE_OVERLOADED_FUNCTIONS, tagPopupItem.word . tagPopupItem.signature)
                let s:CACHE_OVERLOADED_FUNCTIONS[tagPopupItem.word . tagPopupItem.signature] = 1
                call extend(result, [tagPopupItem])
            endif
        else
            call extend(result, [tagPopupItem])
        endif
    endfor
    return result
endfunc

" Access filter
function! s:GetAccessFilter(szFilter, szAccessFilter)
    let szFilter = a:szFilter
    if g:OmniCpp_DisplayMode == 0
        if a:szAccessFilter == 'public'
            " We only get public members
            let szFilter .= "&& v:val.access == 'public'"
        elseif a:szAccessFilter == 'protected'
            " We get public and protected members
            let szFilter .= "&& v:val.access != 'private'"
        endif
    endif
    return szFilter
endfunc

" Filter class members in the popup menu after a completion with -> or .
function! s:FilterClassMembers(tagPopupList, szAccessFilter)
    let szFilter = "(!has_key(v:val, 'friendfunc') && !has_key(v:val, 'ctor') && has_key(v:val, 'kind') && index(['m', 'p', 'f'], v:val.kind[0])>=0 && has_key(v:val, 'access'))"
    call filter(a:tagPopupList, s:GetAccessFilter(szFilter, a:szAccessFilter))
    call extend(s:popupItemResultList, s:FilterOverloadedFunctions(a:tagPopupList))
endfunc

" Filter class scope members in the popup menu after a completion with ::
" We only display attribute and functions members that
" have an access information. We also display nested
" class, struct, union, and enums, typedefs
function! s:FilterClassScopeMembers(tagPopupList, szAccessFilter)
    let szFilter = "!has_key(v:val, 'friendfunc') && has_key(v:val, 'kind') && (index(['m', 'p', 'f'], v:val.kind[0])>=0 && has_key(v:val, 'access'))"
    let szFilter = s:GetAccessFilter(szFilter, a:szAccessFilter)
    let szFilter .= "|| index(['c','e','g','s','t','u'], v:val.kind[0])>=0"
    call filter(a:tagPopupList, szFilter)
    call extend(s:popupItemResultList, s:FilterOverloadedFunctions(a:tagPopupList))
endfunc

" Filter static class members in the popup menu
function! s:FilterStaticClassMembers(tagPopupList, szAccessFilter)
    let szFilter = "!has_key(v:val, 'friendfunc') && has_key(v:val, 'kind') && (index(['m', 'p', 'f'], v:val.kind[0])>=0 && has_key(v:val, 'access') && match(v:val.cmd, '\\Cstatic')!=-1)"
    let szFilter = s:GetAccessFilter(szFilter, a:szAccessFilter)
    let szFilter = szFilter . "|| index(['c','e','g','n','s','t','u','v'], v:val.kind[0])>=0"
    call filter(a:tagPopupList, szFilter)
    call extend(s:popupItemResultList, s:FilterOverloadedFunctions(a:tagPopupList))
endfunc

" Filter scope members in the popup menu
function! s:FilterNamespaceScopeMembers(tagPopupList)
    call extend(s:popupItemResultList, a:tagPopupList)
endfunc

" Init data at the start of completion
function! s:InitComplete()
    " Reset the popup item list
    let s:popupItemResultList = []
    let s:CACHE_OVERLOADED_FUNCTIONS = {}

    " Reset includes cache when the current working directory has changed
    let szCurrentWorkingDir = getcwd()
    if s:szCurrentWorkingDir != szCurrentWorkingDir
        let s:szCurrentWorkingDir = szCurrentWorkingDir
        let g:omni#cpp#includes#CACHE_INCLUDES = {}
        let g:omni#cpp#includes#CACHE_FILE_TIME = {}
    endif

    " Has preview window ?
    let s:hasPreviewWindow = match(&completeopt, 'preview')>=0

    let bResetCache = 0

    " Reset tag env or tag files dependent caches
    if s:HasATagFileOrTagEnvChanged()
        let bResetCache = 1
    endif

    if  (s:OmniCpp_ShowScopeInAbbr !=  g:OmniCpp_ShowScopeInAbbr)
        \|| (s:OmniCpp_ShowPrototypeInAbbr != g:OmniCpp_ShowPrototypeInAbbr)
        \|| (s:OmniCpp_ShowAccess != g:OmniCpp_ShowAccess)

        let s:OmniCpp_ShowScopeInAbbr = g:OmniCpp_ShowScopeInAbbr
        let s:OmniCpp_ShowPrototypeInAbbr = g:OmniCpp_ShowPrototypeInAbbr
        let s:OmniCpp_ShowAccess = g:OmniCpp_ShowAccess
        let bResetCache = 1
    endif

    if s:hasPreviewWindow != s:hasPreviewWindowOld
        let s:hasPreviewWindowOld = s:hasPreviewWindow
        let bResetCache = 1
    endif

    if bResetCache
        let g:omni#cpp#namespaces#CacheResolve = {}
        let s:CACHE_TAG_POPUP_ITEMS = {}
        let g:omni#cpp#utils#CACHE_TAG_INHERITS = {}
        call garbagecollect()
    endif

    " Check for updates
    for szIncludeName in keys(g:omni#cpp#includes#CACHE_INCLUDES)
        let fTime = getftime(szIncludeName)
        let bNeedUpdate = 0
        if has_key(g:omni#cpp#includes#CACHE_FILE_TIME, szIncludeName)
            if fTime != g:omni#cpp#includes#CACHE_FILE_TIME[szIncludeName]
                let bNeedUpdate = 1
            endif
        else
            let g:omni#cpp#includes#CACHE_FILE_TIME[szIncludeName] = fTime
            let bNeedUpdate = 1
        endif
        
        if bNeedUpdate
            " We have to update include list and namespace map of this file
            call omni#cpp#includes#GetList(szIncludeName, 1)
            call omni#cpp#namespaces#GetMapFromBuffer(szIncludeName, 1)
        endif
    endfor

    let s:bDoNotComplete = 0
endfunc


" This function is used for the 'omnifunc' option.
function! omni#cpp#complete#Main(findstart, base)
    if a:findstart
        "call omni#common#debug#Start()

        call s:InitComplete()

        " Note: if s:bMayComplete==1 g:omni#cpp#items#data is build by MayComplete functions
        if !s:bMayComplete
            " If the cursor is in a comment we go out
            if omni#cpp#utils#IsCursorInCommentOrString()
                " Returning -1 is not enough we have to set a variable to let
                " the second call of omni#cpp#complete knows that the
                " cursor was in a comment
                " Why is there a second call when the first call returns -1 ?
                let s:bDoNotComplete = 1
                return -1
            endif

            " We get items here (whend a:findstart==1) because GetItemsToComplete()
            " depends on the cursor position.
            " When a:findstart==0 the cursor position is modified
            let g:omni#cpp#items#data = omni#cpp#items#Get(omni#cpp#utils#TokenizeCurrentInstruction())
        endif

        " Get contexts stack
        let s:contextStack = omni#cpp#namespaces#GetContexts()

        " Reinit of may complete indicator
        let s:bMayComplete = 0
        return s:FindStartPositionOfCompletion()
    endif

    " If the cursor is in a comment we return an empty result
    if s:bDoNotComplete
        let s:bDoNotComplete = 0
        return []
    endif

    if len(g:omni#cpp#items#data)==0
        " A) CURRENT_SCOPE_COMPLETION_MODE

        " 1) Displaying data of each context
        let szAccessFilter = 'all'
        for szCurrentContext in s:contextStack
            if szCurrentContext == '::'
                continue
            endif

            let resolvedTagItem = omni#cpp#utils#GetResolvedTagItem(s:contextStack, omni#cpp#utils#CreateTypeInfo(szCurrentContext))
            if resolvedTagItem != {}
                " We don't search base classes because bases classes are
                " already in the context stack
                let tagPopupList = s:SearchMembers(resolvedTagItem, a:base)
                if index(['c','s'], resolvedTagItem.kind[0])>=0
                    " It's a class or struct
                    call s:FilterClassScopeMembers(tagPopupList, szAccessFilter)
                    let szAccessFilter = 'protected'
                else
                    " It's a namespace or union, we display all members
                    call s:FilterNamespaceScopeMembers(tagPopupList)
                endif
            endif
        endfor

        " 2) Displaying global scope members
        if g:OmniCpp_GlobalScopeSearch
            call s:SearchGlobalMembers(a:base)
        endif
    else
        let typeInfo = omni#cpp#items#ResolveItemsTypeInfo(s:contextStack, g:omni#cpp#items#data)
        if typeInfo != {}
            if g:omni#cpp#items#data[-1].kind == 'itemScope'
                " B) SCOPE_COMPLETION_MODE
                if omni#cpp#utils#GetTypeInfoString(typeInfo)==''
                    call s:SearchGlobalMembers(a:base)
                else
                    for resolvedTagItem in omni#cpp#utils#GetResolvedTags(s:contextStack, typeInfo)
                        let tagPopupList = s:SearchMembers(resolvedTagItem, a:base)
                        if index(['c','s'], resolvedTagItem.kind[0])>=0
                            let szTypeInfo = omni#cpp#utils#ExtractTypeInfoFromTag(resolvedTagItem)
                            if g:OmniCpp_DisplayMode==0
                                " We want to complete a class or struct
                                " If this class is a base class so we display all class members
                                if index(s:contextStack, szTypeInfo)<0
                                    let szAccessFilter = 'public'
                                    call s:FilterStaticClassMembers(tagPopupList, szAccessFilter)
                                else
                                    let szAccessFilter = (s:contextStack[0] == szTypeInfo)? 'all' : 'protected'
                                    call s:FilterClassScopeMembers(tagPopupList, szAccessFilter)
                                endif
                            else
                                if index(s:contextStack, szTypeInfo)<0
                                    let szAccessFilter = 'public'
                                else
                                    let szAccessFilter = (s:contextStack[0] == szTypeInfo)? 'all' : 'protected'
                                endif
                                call s:FilterClassScopeMembers(tagPopupList, szAccessFilter)
                            endif
                        else
                            " We want to complete a namespace
                            call s:FilterNamespaceScopeMembers(tagPopupList)
                        endif
                    endfor
                endif
            else
                " C) CLASS_MEMBERS_COMPLETION_MODE
                for resolvedTagItem in omni#cpp#utils#GetResolvedTags(s:contextStack, typeInfo)
                    let szTypeInfo = omni#cpp#utils#ExtractTypeInfoFromTag(resolvedTagItem)
                    if index(s:contextStack, szTypeInfo)<0
                        let szAccessFilter = 'public'
                    else
                        let szAccessFilter = (s:contextStack[0] == szTypeInfo)? 'all' : 'protected'
                    endif
                    call s:FilterClassMembers(s:SearchMembers(resolvedTagItem, a:base), szAccessFilter)
                endfor
            endif
        endif
    endif

    "call omni#common#debug#End()

    return s:popupItemResultList
endfunc