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Merge pull request #257 from luvit/coro-sugar
Make fiber sugar more useful.
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Original file line number | Diff line number | Diff line change |
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@@ -1,47 +1,58 @@ | ||
local fs = require('fs') | ||
local timer = require('timer') | ||
local fiber = require('fiber') | ||
local fiber = require 'fiber' | ||
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fiber.new(function (resume, wait) | ||
local function logic(wrap) | ||
-- Wrap some functions for sync-style calling | ||
local sleep = wrap(require('timer').setTimeout) | ||
-- Can wrap modules too | ||
local fs = wrap(require('fs'), true) -- true means to auto-handle errors | ||
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print("opening...") | ||
fs.open(__dirname .. "/../LICENSE.txt", "r", "0644", resume) | ||
local err, fd = wait() | ||
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p("on_open", {err=err,fd=fd}) | ||
local fd = fs.open(__filename, "r", "0644") | ||
p("on_open", {fd=fd}) | ||
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print("fstatting...") | ||
fs.fstat(fd, resume) | ||
local err, stat = wait() | ||
p("stat", {err=err,stat=stat}) | ||
local stat = fs.fstat(fd) | ||
p("stat", {stat=stat}) | ||
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print("reading...") | ||
local offset = 0 | ||
repeat | ||
fs.read(fd, offset, 72, resume) | ||
local err, chunk, length = wait() | ||
p("on_read", {err=err,chunk=chunk, offset=offset, length=length}) | ||
local chunk, length = fs.read(fd, offset, 40) | ||
p("on_read", {chunk=chunk, offset=offset, length=length}) | ||
offset = offset + length | ||
until length == 0 | ||
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print("pausing...") | ||
timer.setTimeout(400, resume) | ||
wait() | ||
sleep(1000) | ||
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print("closing...") | ||
fs.close(fd, resume) | ||
local err = wait() | ||
p("on_close", {err=err}) | ||
fs.close(fd) | ||
p("on_close", {}) | ||
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return fd, stat, offset | ||
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end | ||
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print "Starting fiber." | ||
fiber.new(logic, function (err, fd, stat, offset) | ||
if err then | ||
p("ERROR", err) | ||
error(err) | ||
else | ||
p("SUCCESS", { fd = fd, stat = stat, offset = offset }) | ||
end | ||
end) | ||
print "started." | ||
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fiber.new(function (resume, wait) | ||
print "Starting another fiber." | ||
fiber.new(function (wrap) | ||
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local readdir = wrap(require('fs').readdir) | ||
print("scanning directory...") | ||
fs.readdir(".", resume) | ||
local err, files = wait() | ||
local err, files = readdir(".") | ||
p("on_open", {err=err,files=files}) | ||
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end) | ||
print "started second." | ||
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