133 lines
3.5 KiB
JavaScript
133 lines
3.5 KiB
JavaScript
import Handlebars from "handlebars";
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// This is a mechanism for quickly rendering templates which is Ember aware
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// templates are highly compatible with Ember so you don't need to worry about calling "get"
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// and discourseComputed properties function, additionally it uses stringParams like Ember does
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const RawHandlebars = Handlebars.create();
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function buildPath(blk, args) {
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var result = {
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type: "PathExpression",
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data: false,
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depth: blk.path.depth,
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loc: blk.path.loc
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};
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// Server side precompile doesn't have jquery.extend
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Object.keys(args).forEach(function(a) {
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result[a] = args[a];
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});
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return result;
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}
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function replaceGet(ast) {
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var visitor = new Handlebars.Visitor();
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visitor.mutating = true;
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visitor.MustacheStatement = function(mustache) {
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if (!(mustache.params.length || mustache.hash)) {
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mustache.params[0] = mustache.path;
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mustache.path = buildPath(mustache, {
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parts: ["get"],
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original: "get",
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strict: true,
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falsy: true
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});
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}
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return Handlebars.Visitor.prototype.MustacheStatement.call(this, mustache);
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};
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// rewrite `each x as |y|` as each y in x`
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// This allows us to use the same syntax in all templates
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visitor.BlockStatement = function(block) {
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if (block.path.original === "each" && block.params.length === 1) {
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var paramName = block.program.blockParams[0];
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block.params = [
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buildPath(block, { original: paramName }),
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{ type: "CommentStatement", value: "in" },
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block.params[0]
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];
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delete block.program.blockParams;
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}
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return Handlebars.Visitor.prototype.BlockStatement.call(this, block);
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};
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visitor.accept(ast);
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}
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if (Handlebars.Compiler) {
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RawHandlebars.Compiler = function() {};
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RawHandlebars.Compiler.prototype = Object.create(
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Handlebars.Compiler.prototype
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);
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RawHandlebars.Compiler.prototype.compiler = RawHandlebars.Compiler;
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RawHandlebars.JavaScriptCompiler = function() {};
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RawHandlebars.JavaScriptCompiler.prototype = Object.create(
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Handlebars.JavaScriptCompiler.prototype
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);
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RawHandlebars.JavaScriptCompiler.prototype.compiler =
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RawHandlebars.JavaScriptCompiler;
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RawHandlebars.JavaScriptCompiler.prototype.namespace = "RawHandlebars";
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RawHandlebars.precompile = function(value, asObject) {
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var ast = Handlebars.parse(value);
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replaceGet(ast);
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var options = {
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knownHelpers: {
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get: true
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},
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data: true,
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stringParams: true
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};
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asObject = asObject === undefined ? true : asObject;
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var environment = new RawHandlebars.Compiler().compile(ast, options);
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return new RawHandlebars.JavaScriptCompiler().compile(
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environment,
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options,
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undefined,
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asObject
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);
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};
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RawHandlebars.compile = function(string) {
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var ast = Handlebars.parse(string);
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replaceGet(ast);
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// this forces us to rewrite helpers
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var options = { data: true, stringParams: true };
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var environment = new RawHandlebars.Compiler().compile(ast, options);
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var templateSpec = new RawHandlebars.JavaScriptCompiler().compile(
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environment,
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options,
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undefined,
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true
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);
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var t = RawHandlebars.template(templateSpec);
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t.isMethod = false;
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return t;
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};
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}
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export function template() {
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return RawHandlebars.template.apply(this, arguments);
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}
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export function precompile() {
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return RawHandlebars.precompile.apply(this, arguments);
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}
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export function compile() {
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return RawHandlebars.compile.apply(this, arguments);
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}
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export default RawHandlebars;
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