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path: root/server/src/method/textDocument/definition.lua
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local core = require 'core'

local function checkWorkSpaceComplete(lsp, result)
    if result.type ~= 'field' and result.type ~= 'local' then
        return
    end
    if result.value then
        if not result.value.isRequire then
            return
        end
    else
        if not result.isRequire then
            return
        end
    end
    lsp:checkWorkSpaceComplete()
end

return function (lsp, params)
    local uri = params.textDocument.uri
    local vm, lines = lsp:loadVM(uri)
    if not vm then
        return nil
    end
    -- lua是从1开始的,因此都要+1
    local position = lines:position(params.position.line + 1, params.position.character + 1)
    local result = core.findResult(vm, position)
    if not result then
        return nil
    end

    checkWorkSpaceComplete(lsp, result)

    local positions = core.definition(vm, result)
    if not positions then
        return nil
    end

    local locations = {}
    for i, position in ipairs(positions) do
        local start, finish, valueUri = position[1], position[2], (position[3] or uri)
        local _, valueLines = lsp:loadVM(valueUri)
        local start_row,  start_col  = valueLines:rowcol(start)
        local finish_row, finish_col = valueLines:rowcol(finish)
        locations[i] = {
            uri =  valueUri,
            range = {
                start = {
                    line = start_row - 1,
                    character = start_col - 1,
                },
                ['end'] = {
                    line = finish_row - 1,
                    -- 这里不用-1,因为前端期待的是匹配完成后的位置
                    character = finish_col,
                },
            }
        }
    end

    local response = locations

    return response
end