ast.js
3.35 KB
define(['exports', 'module'], function (exports, module) {
'use strict';
var AST = {
// Public API used to evaluate derived attributes regarding AST nodes
helpers: {
// a mustache is definitely a helper if:
// * it is an eligible helper, and
// * it has at least one parameter or hash segment
helperExpression: function helperExpression(node) {
return node.type === 'SubExpression' || (node.type === 'MustacheStatement' || node.type === 'BlockStatement') && !!(node.params && node.params.length || node.hash);
},
scopedId: function scopedId(path) {
return (/^\.|this\b/.test(path.original)
);
},
// an ID is simple if it only has one part, and that part is not
// `..` or `this`.
simpleId: function simpleId(path) {
return path.parts.length === 1 && !AST.helpers.scopedId(path) && !path.depth;
}
}
};
// Must be exported as an object rather than the root of the module as the jison lexer
// must modify the object to operate properly.
module.exports = AST;
});
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