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local class = require('java-core.utils.class')

local log = require('java-core.utils.log2')

---@class java-dap.DapRunner

---@field private server uv_tcp_t

local Runner = class()

---@return java-dap.DapRunner

function Runner:new()

local o = {

server = nil,

}

setmetatable(o, self)

self.__index = self

return o

end

---Dap run with given config

---@param config java-dap.DapLauncherConfig

---@param report java-test.JUnitTestReport

function Runner:run_by_config(config, report)

log.debug('running dap with config: ', config)

require('dap').run(config --[[@as Configuration]], {

before = function(conf)

return self:before(conf, report)

end,

after = function()

return self:after()

end,

})

end

---Runs before the dap run

---@private

---@param conf java-dap.DapLauncherConfig

---@param report java-test.JUnitTestReport

---@return java-dap.DapLauncherConfig

function Runner:before(conf, report)

log.debug('running "before" callback')

self.server = assert(vim.loop.new_tcp(), 'uv.new_tcp() must return handle')

self.server:bind('127.0.0.1', 0)

self.server:listen(128, function(err)

assert(not err, err)

local sock = assert(vim.loop.new_tcp(), 'uv.new_tcp must return handle')

self.server:accept(sock)

local success = sock:read_start(report:get_stream_reader(sock))

assert(success == 0, 'failed to listen to reader')

end)

-- replace the port number in the generated args

conf.args = conf.args:gsub('-port ([0-9]+)', '-port ' .. self.server:getsockname().port)

return conf

end

---Runs after the dap run

---@private

function Runner:after()

log.debug('running "after" callback')

if self.server then

self.server:shutdown()

self.server:close()

end

return Runner

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