diff options
Diffstat (limited to 'ext')
| -rw-r--r-- | ext/bg/js/template-renderer.js | 127 |
1 files changed, 125 insertions, 2 deletions
diff --git a/ext/bg/js/template-renderer.js b/ext/bg/js/template-renderer.js index f6c4374b..ef05cbd8 100644 --- a/ext/bg/js/template-renderer.js +++ b/ext/bg/js/template-renderer.js @@ -25,6 +25,7 @@ class TemplateRenderer { this._cache = new Map(); this._cacheMaxSize = 5; this._helpersRegistered = false; + this._stateStack = null; } async render(template, data) { @@ -41,7 +42,12 @@ class TemplateRenderer { cache.set(template, instance); } - return instance(data).trim(); + try { + this._stateStack = [new Map()]; + return instance(data).trim(); + } finally { + this._stateStack = null; + } } // Private @@ -70,7 +76,13 @@ class TemplateRenderer { ['regexReplace', this._regexReplace.bind(this)], ['regexMatch', this._regexMatch.bind(this)], ['mergeTags', this._mergeTags.bind(this)], - ['eachUpTo', this._eachUpTo.bind(this)] + ['eachUpTo', this._eachUpTo.bind(this)], + ['spread', this._spread.bind(this)], + ['op', this._op.bind(this)], + ['get', this._get.bind(this)], + ['set', this._set.bind(this)], + ['scope', this._scope.bind(this)], + ['isMoraPitchHigh', this._isMoraPitchHigh.bind(this)] ]; for (const [name, helper] of helpers) { @@ -224,4 +236,115 @@ class TemplateRenderer { } return options.inverse(context); } + + _spread(context, ...args) { + const result = []; + for (let i = 0, ii = args.length - 1; i < ii; ++i) { + try { + result.push(...args[i]); + } catch (e) { + // NOP + } + } + return result; + } + + _op(context, ...args) { + switch (args.length) { + case 3: return this._evaluateUnaryExpression(args[0], args[1]); + case 4: return this._evaluateBinaryExpression(args[0], args[1], args[2]); + case 5: return this._evaluateTernaryExpression(args[0], args[1], args[2], args[3]); + default: return void 0; + } + } + + _evaluateUnaryExpression(operator, operand1) { + switch (operator) { + case '+': return +operand1; + case '-': return -operand1; + case '~': return ~operand1; + case '!': return !operand1; + default: return void 0; + } + } + + _evaluateBinaryExpression(operator, operand1, operand2) { + switch (operator) { + case '+': return operand1 + operand2; + case '-': return operand1 - operand2; + case '/': return operand1 / operand2; + case '*': return operand1 * operand2; + case '%': return operand1 % operand2; + case '**': return operand1 ** operand2; + case '==': return operand1 == operand2; // eslint-disable-line eqeqeq + case '!=': return operand1 != operand2; // eslint-disable-line eqeqeq + case '===': return operand1 === operand2; + case '!==': return operand1 !== operand2; + case '<': return operand1 < operand2; + case '<=': return operand1 <= operand2; + case '>': return operand1 > operand2; + case '>=': return operand1 >= operand2; + case '<<': return operand1 << operand2; + case '>>': return operand1 >> operand2; + case '>>>': return operand1 >>> operand2; + case '&': return operand1 & operand2; + case '|': return operand1 | operand2; + case '^': return operand1 ^ operand2; + case '&&': return operand1 && operand2; + case '||': return operand1 || operand2; + default: return void 0; + } + } + + _evaluateTernaryExpression(operator, operand1, operand2, operand3) { + switch (operator) { + case '?:': return operand1 ? operand2 : operand3; + default: return void 0; + } + } + + _get(context, key) { + for (let i = this._stateStack.length; --i >= 0;) { + const map = this._stateStack[i]; + if (map.has(key)) { + return map.get(key); + } + } + return void 0; + } + + _set(context, ...args) { + switch (args.length) { + case 2: + { + const [key, options] = args; + const value = options.fn(context); + this._stateStack[this._stateStack.length - 1].set(key, value); + return value; + } + case 3: + { + const [key, value] = args; + this._stateStack[this._stateStack.length - 1].set(key, value); + return value; + } + default: + return void 0; + } + } + + _scope(context, options) { + try { + this._stateStack.push(new Map()); + return options.fn(context); + } finally { + if (this._stateStack.length > 1) { + this._stateStack.pop(); + } + } + } + + _isMoraPitchHigh(context, position, index) { + return jp.isMoraPitchHigh(index, position); + } } |