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Lazy load console object

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This commit is contained in:
Ryan Dahl 2010-11-30 11:18:02 -08:00
parent 81afb54c0a
commit 70188499b0
2 changed files with 88 additions and 77 deletions
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83
lib/console.js Normal file
View File

@ -0,0 +1,83 @@
var writeError = process.binding('stdio').writeError;
// console object
var formatRegExp = /%[sdj]/g;
function format (f) {
if (typeof f !== 'string') {
var objects = [], util = require('util');
for (var i = 0; i < arguments.length; i++) {
objects.push(util.inspect(arguments[i]));
}
return objects.join(' ');
}
var i = 1;
var args = arguments;
var str = String(f).replace(formatRegExp, function (x) {
switch (x) {
case '%s': return args[i++];
case '%d': return +args[i++];
case '%j': return JSON.stringify(args[i++]);
default:
return x;
}
});
for (var len = args.length; i < len; ++i) {
str += ' ' + args[i];
}
return str;
}
exports.log = function () {
process.stdout.write(format.apply(this, arguments) + '\n');
};
exports.info = exports.log;
exports.warn = function () {
writeError(format.apply(this, arguments) + '\n');
};
exports.error = exports.warn;
exports.dir = function(object){
var util = require('util');
process.stdout.write(util.inspect(object) + '\n');
};
var times = {};
exports.time = function(label){
times[label] = Date.now();
};
exports.timeEnd = function(label){
var duration = Date.now() - times[label];
exports.log('%s: %dms', label, duration);
};
exports.trace = function(label){
// TODO probably can to do this better with V8's debug object once that is
// exposed.
var err = new Error;
err.name = 'Trace';
err.message = label || '';
Error.captureStackTrace(err, arguments.callee);
console.error(err.stack);
};
exports.assert = function(expression){
if(!expression){
var arr = Array.prototype.slice.call(arguments, 1);
process.assert(false, format.apply(this, arr));
}
};

82
src/node.js
View File

@ -27,7 +27,6 @@ process.assert = function (x, msg) {
if (!x) throw new Error(msg || "assertion error"); if (!x) throw new Error(msg || "assertion error");
}; };
var writeError = process.binding('stdio').writeError;
var evals = process.binding('evals'); var evals = process.binding('evals');
// lazy loaded. // lazy loaded.
@ -115,9 +114,7 @@ var module = (function () {
var debugLevel = parseInt(process.env["NODE_DEBUG"], 16); var debugLevel = parseInt(process.env["NODE_DEBUG"], 16);
function debug (x) { function debug (x) {
if (debugLevel & 1) { if (debugLevel & 1) console.error(x);
process.binding('stdio').writeError(x + "\n");
}
} }
@ -490,81 +487,12 @@ process.openStdin = function () {
}; };
// console object // Lazy load console object
var formatRegExp = /%[sdj]/g; global.__defineGetter__('console', function () {
function format (f) { return requireNative('console');
if (typeof f !== 'string') { });
var objects = [], util = requireNative('util');
for (var i = 0; i < arguments.length; i++) {
objects.push(util.inspect(arguments[i]));
}
return objects.join(' ');
}
var i = 1;
var args = arguments;
var str = String(f).replace(formatRegExp, function (x) {
switch (x) {
case '%s': return args[i++];
case '%d': return +args[i++];
case '%j': return JSON.stringify(args[i++]);
default:
return x;
}
});
for (var len = args.length; i < len; ++i) {
str += ' ' + args[i];
}
return str;
}
global.console = {};
global.console.log = function () {
process.stdout.write(format.apply(this, arguments) + '\n');
};
global.console.info = global.console.log;
global.console.warn = function () {
writeError(format.apply(this, arguments) + '\n');
};
global.console.error = global.console.warn;
global.console.dir = function(object){
var util = requireNative('util');
process.stdout.write(util.inspect(object) + '\n');
};
var times = {};
global.console.time = function(label){
times[label] = Date.now();
};
global.console.timeEnd = function(label){
var duration = Date.now() - times[label];
global.console.log('%s: %dms', label, duration);
};
global.console.trace = function(label){
// TODO probably can to do this better with V8's debug object once that is
// exposed.
var err = new Error;
err.name = 'Trace';
err.message = label || '';
Error.captureStackTrace(err, arguments.callee);
console.error(err.stack);
};
global.console.assert = function(expression){
if(!expression){
var arr = Array.prototype.slice.call(arguments, 1);
process.assert(false, format.apply(this, arr));
}
};
global.Buffer = requireNative('buffer').Buffer; global.Buffer = requireNative('buffer').Buffer;
process.exit = function (code) { process.exit = function (code) {