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Limiting watched file compilation to once every 25ms

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This commit is contained in:
Trevor Burnham 2011-12-18 14:05:18 -05:00
parent 9fde794858
commit dfc602159e
2 changed files with 25 additions and 17 deletions
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24
lib/coffee-script/command.js
View file

@ -188,20 +188,24 @@
};
watch = function(source, base) {
var callback, compile, prevStats, watchErr, watcher;
var callback, compile, compileTimeout, prevStats, watchErr, watcher;
prevStats = null;
compileTimeout = null;
compile = function() {
return fs.stat(source, function(err, stats) {
if (err) throw err;
if (prevStats && (stats.size === prevStats.size && stats.mtime.getTime() === prevStats.mtime.getTime())) {
return;
}
prevStats = stats;
return fs.readFile(source, function(err, code) {
clearTimeout(compileTimeout);
return compileTimeout = setTimeout(function() {
return fs.stat(source, function(err, stats) {
if (err) throw err;
return compileScript(source, code.toString(), base);
if (prevStats && (stats.size === prevStats.size && stats.mtime.getTime() === prevStats.mtime.getTime())) {
return;
}
prevStats = stats;
return fs.readFile(source, function(err, code) {
if (err) throw err;
return compileScript(source, code.toString(), base);
});
});
});
}, 25);
};
watchErr = function(e) {
if (e.code === 'ENOENT') {

18
src/command.coffee
View file

@ -168,16 +168,20 @@ loadRequires = ->
watch = (source, base) ->
prevStats = null
compileTimeout = null
compile = ->
fs.stat source, (err, stats) ->
throw err if err
return if prevStats and (stats.size is prevStats.size and
stats.mtime.getTime() is prevStats.mtime.getTime())
prevStats = stats
fs.readFile source, (err, code) ->
clearTimeout compileTimeout
compileTimeout = setTimeout ->
fs.stat source, (err, stats) ->
throw err if err
compileScript(source, code.toString(), base)
return if prevStats and (stats.size is prevStats.size and
stats.mtime.getTime() is prevStats.mtime.getTime())
prevStats = stats
fs.readFile source, (err, code) ->
throw err if err
compileScript(source, code.toString(), base)
, 25
watchErr = (e) ->
if e.code is 'ENOENT'