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'use strict';
var Base = require('base');
var define = require('define-property');
var Compiler = require('./lib/compiler');
var Parser = require('./lib/parser');
var utils = require('./lib/utils');
var regexCache = {};
var cache = {};
/**
* Create a new instance of `Snapdragon` with the given `options`.
*
* ```js
* var snapdragon = new Snapdragon();
* ```
*
* @param {Object} `options`
* @api public
*/
function Snapdragon(options) {
Base.call(this, null, options);
this.options = utils.extend({source: 'string'}, this.options);
this.compiler = new Compiler(this.options);
this.parser = new Parser(this.options);
Object.defineProperty(this, 'compilers', {
get: function() {
return this.compiler.compilers;
}
});
Object.defineProperty(this, 'parsers', {
get: function() {
return this.parser.parsers;
}
});
Object.defineProperty(this, 'regex', {
get: function() {
return this.parser.regex;
}
});
}
/**
* Inherit Base
*/
Base.extend(Snapdragon);
/**
* Add a parser to `snapdragon.parsers` for capturing the given `type` using
* the specified regex or parser function. A function is useful if you need
* to customize how the token is created and/or have access to the parser
* instance to check options, etc.
*
* ```js
* snapdragon
* .capture('slash', /^\//)
* .capture('dot', function() {
* var pos = this.position();
* var m = this.match(/^\./);
* if (!m) return;
* return pos({
* type: 'dot',
* val: m[0]
* });
* });
* ```
* @param {String} `type`
* @param {RegExp|Function} `regex`
* @return {Object} Returns the parser instance for chaining
* @api public
*/
Snapdragon.prototype.capture = function() {
return this.parser.capture.apply(this.parser, arguments);
};
/**
* Register a plugin `fn`.
*
* ```js
* var snapdragon = new Snapdgragon([options]);
* snapdragon.use(function() {
* console.log(this); //<= snapdragon instance
* console.log(this.parser); //<= parser instance
* console.log(this.compiler); //<= compiler instance
* });
* ```
* @param {Object} `fn`
* @api public
*/
Snapdragon.prototype.use = function(fn) {
fn.call(this, this);
return this;
};
/**
* Parse the given `str`.
*
* ```js
* var snapdragon = new Snapdgragon([options]);
* // register parsers
* snapdragon.parser.use(function() {});
*
* // parse
* var ast = snapdragon.parse('foo/bar');
* console.log(ast);
* ```
* @param {String} `str`
* @param {Object} `options` Set `options.sourcemap` to true to enable source maps.
* @return {Object} Returns an AST.
* @api public
*/
Snapdragon.prototype.parse = function(str, options) {
this.options = utils.extend({}, this.options, options);
var parsed = this.parser.parse(str, this.options);
// add non-enumerable parser reference
define(parsed, 'parser', this.parser);
return parsed;
};
/**
* Compile the given `AST`.
*
* ```js
* var snapdragon = new Snapdgragon([options]);
* // register plugins
* snapdragon.use(function() {});
* // register parser plugins
* snapdragon.parser.use(function() {});
* // register compiler plugins
* snapdragon.compiler.use(function() {});
*
* // parse
* var ast = snapdragon.parse('foo/bar');
*
* // compile
* var res = snapdragon.compile(ast);
* console.log(res.output);
* ```
* @param {Object} `ast`
* @param {Object} `options`
* @return {Object} Returns an object with an `output` property with the rendered string.
* @api public
*/
Snapdragon.prototype.compile = function(ast, options) {
this.options = utils.extend({}, this.options, options);
var compiled = this.compiler.compile(ast, this.options);
// add non-enumerable compiler reference
define(compiled, 'compiler', this.compiler);
return compiled;
};
/**
* Expose `Snapdragon`
*/
module.exports = Snapdragon;
/**
* Expose `Parser` and `Compiler`
*/
module.exports.Compiler = Compiler;
module.exports.Parser = Parser;
|
