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var _ = require('underscore'),
runner = require('./util/template-runner'),
eco, dust, Handlebars, Mustache;
try {
dust = require('dustjs-linkedin');
} catch (err) { /* NOP */ }
try {
Mustache = require('mustache');
} catch (err) { /* NOP */ }
try {
eco = require('eco');
} catch (err) { /* NOP */ }
function error() {
throw new Error('EWOT');
}
function makeSuite(bench, name, template, handlebarsOnly) {
// Create aliases to minimize any impact from having to walk up the closure tree.
var templateName = name,
context = template.context,
partials = template.partials,
handlebarsOut,
compatOut,
dustOut,
ecoOut,
mustacheOut;
var handlebar = Handlebars.compile(template.handlebars, {data: false}),
compat = Handlebars.compile(template.handlebars, {data: false, compat: true}),
options = {helpers: template.helpers};
_.each(template.partials && template.partials.handlebars, function(partial, partialName) {
Handlebars.registerPartial(partialName, Handlebars.compile(partial, {data: false}));
});
handlebarsOut = handlebar(context, options);
bench('handlebars', function() {
handlebar(context, options);
});
compatOut = compat(context, options);
bench('compat', function() {
compat(context, options);
});
if (handlebarsOnly) {
return;
}
if (dust) {
if (template.dust) {
dustOut = false;
dust.loadSource(dust.compile(template.dust, templateName));
dust.render(templateName, context, function(err, out) { dustOut = out; });
bench('dust', function() {
dust.render(templateName, context, function() {});
});
} else {
bench('dust', error);
}
}
if (eco) {
if (template.eco) {
var ecoTemplate = eco.compile(template.eco);
ecoOut = ecoTemplate(context);
bench('eco', function() {
ecoTemplate(context);
});
} else {
bench('eco', error);
}
}
if (Mustache) {
var mustacheSource = template.mustache,
mustachePartials = partials && partials.mustache;
if (mustacheSource) {
mustacheOut = Mustache.to_html(mustacheSource, context, mustachePartials);
bench('mustache', function() {
Mustache.to_html(mustacheSource, context, mustachePartials);
});
} else {
bench('mustache', error);
}
}
// Hack around whitespace until we have whitespace control
handlebarsOut = handlebarsOut.replace(/\s/g, '');
function compare(b, lang) {
if (b == null) {
return;
}
b = b.replace(/\s/g, '');
if (handlebarsOut !== b) {
throw new Error('Template output mismatch: ' + name
+ '\n\nHandlebars: ' + handlebarsOut
+ '\n\n' + lang + ': ' + b);
}
}
compare(compatOut, 'compat');
compare(dustOut, 'dust');
compare(ecoOut, 'eco');
compare(mustacheOut, 'mustache');
}
module.exports = function(grunt, callback) {
// Deferring load incase we are being run inline with the grunt build
Handlebars = require('../lib');
console.log('Execution Throughput');
runner(grunt, makeSuite, function(times, scaled) {
callback(scaled);
});
};
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