@glimmer/compiler
Version:
134 lines (108 loc) • 13.3 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.precompileJSON = precompileJSON;
exports.precompile = precompile;
exports.defaultId = void 0;
var _syntax = require("@glimmer/syntax");
var _util = require("@glimmer/util");
var _index = _interopRequireDefault(require("./passes/1-normalization/index"));
var _index2 = require("./passes/2-encoding/index");
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
const defaultId = (() => {
let req = typeof module === 'object' && typeof module.require === 'function' ? module.require : require;
if (req) {
try {
const crypto = req('crypto');
let idFn = src => {
let hash = crypto.createHash('sha1');
hash.update(src, 'utf8'); // trim to 6 bytes of data (2^48 - 1)
return hash.digest('base64').substring(0, 8);
};
idFn('test');
return idFn;
} catch (e) {}
}
return function idFn() {
return null;
};
})();
exports.defaultId = defaultId;
const defaultOptions = {
id: defaultId
};
/*
* Compile a string into a template javascript string.
*
* Example usage:
* import { precompile } from '@glimmer/compiler';
* import { templateFactory } from 'glimmer-runtime';
* let templateJs = precompile("Howdy {{name}}");
* let factory = templateFactory(new Function("return " + templateJs)());
* let template = factory.create(env);
*
* @method precompile
* @param {string} string a Glimmer template string
* @return {string} a template javascript string
*/
function precompileJSON(string, options = defaultOptions) {
var _a, _b;
let source = new _syntax.Source(string, (_a = options.meta) === null || _a === void 0 ? void 0 : _a.moduleName);
let [ast, locals] = (0, _syntax.normalize)(source, options);
let block = (0, _index.default)(source, ast, (_b = options.strictMode) !== null && _b !== void 0 ? _b : false).mapOk(pass2In => {
return (0, _index2.visit)(pass2In);
});
if (false
/* LOCAL_SHOULD_LOG */
) {
_util.LOCAL_LOGGER.log(`Template ->`, block);
}
if (block.isOk) {
return [block.value, locals];
} else {
throw block.reason;
}
} // UUID used as a unique placeholder for placing a snippet of JS code into
// the otherwise JSON stringified value below.
const SCOPE_PLACEHOLDER = '796d24e6-2450-4fb0-8cdf-b65638b5ef70';
/*
* Compile a string into a template javascript string.
*
* Example usage:
* import { precompile } from '@glimmer/compiler';
* import { templateFactory } from 'glimmer-runtime';
* let templateJs = precompile("Howdy {{name}}");
* let factory = templateFactory(new Function("return " + templateJs)());
* let template = factory.create(env);
*
* @method precompile
* @param {string} string a Glimmer template string
* @return {string} a template javascript string
*/
function precompile(source, options = defaultOptions) {
var _a, _b;
let [block, usedLocals] = precompileJSON(source, options);
let moduleName = (_a = options.meta) === null || _a === void 0 ? void 0 : _a.moduleName;
let idFn = options.id || defaultId;
let blockJSON = JSON.stringify(block);
let templateJSONObject = {
id: idFn(JSON.stringify(options.meta) + blockJSON),
block: blockJSON,
moduleName: moduleName !== null && moduleName !== void 0 ? moduleName : '(unknown template module)',
// lying to the type checker here because we're going to
// replace it just below, after stringification
scope: SCOPE_PLACEHOLDER,
isStrictMode: (_b = options.strictMode) !== null && _b !== void 0 ? _b : false
};
if (usedLocals.length === 0) {
delete templateJSONObject.scope;
} // JSON is javascript
let stringified = JSON.stringify(templateJSONObject);
if (usedLocals.length > 0) {
let scopeFn = `()=>[${usedLocals.join(',')}]`;
stringified = stringified.replace(`"${SCOPE_PLACEHOLDER}"`, scopeFn);
}
return stringified;
}
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module.require : require;\n\n  if (req) {\n    try {\n      const crypto = req('crypto');\n\n      let idFn: TemplateIdFn = (src) => {\n        let hash = crypto.createHash('sha1');\n        hash.update(src, 'utf8');\n        // trim to 6 bytes of data (2^48 - 1)\n        return hash.digest('base64').substring(0, 8);\n      };\n\n      idFn('test');\n\n      return idFn;\n    } catch (e) {}\n  }\n\n  return function idFn() {\n    return null;\n  };\n})();\n\nconst defaultOptions: PrecompileOptions = {\n  id: defaultId,\n};\n\n/*\n * Compile a string into a template javascript string.\n *\n * Example usage:\n *     import { precompile } from '@glimmer/compiler';\n *     import { templateFactory } from 'glimmer-runtime';\n *     let templateJs = precompile(\"Howdy {{name}}\");\n *     let factory = templateFactory(new Function(\"return \" + templateJs)());\n *     let template = factory.create(env);\n *\n * @method precompile\n * @param {string} string a Glimmer template string\n * @return {string} a template javascript string\n */\nexport function precompileJSON(\n  string: string,\n  options: PrecompileOptions = defaultOptions\n): [block: SerializedTemplateBlock, usedLocals: string[]] {\n  let source = new Source(string, options.meta?.moduleName);\n  let [ast, locals] = normalize(source, options);\n  let block = pass0(source, ast, options.strictMode ?? false).mapOk((pass2In) => {\n    return pass2(pass2In);\n  });\n\n  if (LOCAL_SHOULD_LOG) {\n    LOCAL_LOGGER.log(`Template ->`, block);\n  }\n\n  if (block.isOk) {\n    return [block.value, locals];\n  } else {\n    throw block.reason;\n  }\n}\n\n// UUID used as a unique placeholder for placing a snippet of JS code into\n// the otherwise JSON stringified value below.\nconst SCOPE_PLACEHOLDER = '796d24e6-2450-4fb0-8cdf-b65638b5ef70';\n\n/*\n * Compile a string into a template javascript string.\n *\n * Example usage:\n *     import { precompile } from '@glimmer/compiler';\n *     import { templateFactory } from 'glimmer-runtime';\n *     let templateJs = precompile(\"Howdy {{name}}\");\n *     let factory = templateFactory(new Function(\"return \" + templateJs)());\n *     let template = factory.create(env);\n *\n * @method precompile\n * @param {string} string a Glimmer template string\n * @return {string} a template javascript string\n */\nexport function precompile(\n  source: string,\n  options: PrecompileOptions = defaultOptions\n): TemplateJavascript {\n  let [block, usedLocals] = precompileJSON(source, options);\n\n  let moduleName = options.meta?.moduleName;\n  let idFn = options.id || defaultId;\n  let blockJSON = JSON.stringify(block);\n  let templateJSONObject: SerializedTemplateWithLazyBlock = {\n    id: idFn(JSON.stringify(options.meta) + blockJSON),\n    block: blockJSON,\n    moduleName: moduleName ?? '(unknown template module)',\n    // lying to the type checker here because we're going to\n    // replace it just below, after stringification\n    scope: (SCOPE_PLACEHOLDER as unknown) as null,\n    isStrictMode: options.strictMode ?? false,\n  };\n\n  if (usedLocals.length === 0) {\n    delete templateJSONObject.scope;\n  }\n\n  // JSON is javascript\n  let stringified = JSON.stringify(templateJSONObject);\n\n  if (usedLocals.length > 0) {\n    let scopeFn = `()=>[${usedLocals.join(',')}]`;\n\n    stringified = stringified.replace(`\"${SCOPE_PLACEHOLDER}\"`, scopeFn);\n  }\n\n  return stringified;\n}\n\nexport { PrecompileOptions };\n"],"sourceRoot":""}