mirror of
https://github.com/actions/setup-python.git
synced 2024-11-22 15:10:57 -05:00
104 lines
2.4 KiB
JavaScript
104 lines
2.4 KiB
JavaScript
'use strict';
|
|
|
|
var extend = require('extend-shallow');
|
|
var Snapdragon = require('snapdragon');
|
|
var compilers = require('./compilers');
|
|
var parsers = require('./parsers');
|
|
var utils = require('./utils');
|
|
|
|
/**
|
|
* Customize Snapdragon parser and renderer
|
|
*/
|
|
|
|
function Braces(options) {
|
|
this.options = extend({}, options);
|
|
}
|
|
|
|
/**
|
|
* Initialize braces
|
|
*/
|
|
|
|
Braces.prototype.init = function(options) {
|
|
if (this.isInitialized) return;
|
|
this.isInitialized = true;
|
|
var opts = utils.createOptions({}, this.options, options);
|
|
this.snapdragon = this.options.snapdragon || new Snapdragon(opts);
|
|
this.compiler = this.snapdragon.compiler;
|
|
this.parser = this.snapdragon.parser;
|
|
|
|
compilers(this.snapdragon, opts);
|
|
parsers(this.snapdragon, opts);
|
|
|
|
/**
|
|
* Call Snapdragon `.parse` method. When AST is returned, we check to
|
|
* see if any unclosed braces are left on the stack and, if so, we iterate
|
|
* over the stack and correct the AST so that compilers are called in the correct
|
|
* order and unbalance braces are properly escaped.
|
|
*/
|
|
|
|
utils.define(this.snapdragon, 'parse', function(pattern, options) {
|
|
var parsed = Snapdragon.prototype.parse.apply(this, arguments);
|
|
this.parser.ast.input = pattern;
|
|
|
|
var stack = this.parser.stack;
|
|
while (stack.length) {
|
|
addParent({type: 'brace.close', val: ''}, stack.pop());
|
|
}
|
|
|
|
function addParent(node, parent) {
|
|
utils.define(node, 'parent', parent);
|
|
parent.nodes.push(node);
|
|
}
|
|
|
|
// add non-enumerable parser reference
|
|
utils.define(parsed, 'parser', this.parser);
|
|
return parsed;
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Decorate `.parse` method
|
|
*/
|
|
|
|
Braces.prototype.parse = function(ast, options) {
|
|
if (ast && typeof ast === 'object' && ast.nodes) return ast;
|
|
this.init(options);
|
|
return this.snapdragon.parse(ast, options);
|
|
};
|
|
|
|
/**
|
|
* Decorate `.compile` method
|
|
*/
|
|
|
|
Braces.prototype.compile = function(ast, options) {
|
|
if (typeof ast === 'string') {
|
|
ast = this.parse(ast, options);
|
|
} else {
|
|
this.init(options);
|
|
}
|
|
return this.snapdragon.compile(ast, options);
|
|
};
|
|
|
|
/**
|
|
* Expand
|
|
*/
|
|
|
|
Braces.prototype.expand = function(pattern) {
|
|
var ast = this.parse(pattern, {expand: true});
|
|
return this.compile(ast, {expand: true});
|
|
};
|
|
|
|
/**
|
|
* Optimize
|
|
*/
|
|
|
|
Braces.prototype.optimize = function(pattern) {
|
|
var ast = this.parse(pattern, {optimize: true});
|
|
return this.compile(ast, {optimize: true});
|
|
};
|
|
|
|
/**
|
|
* Expose `Braces`
|
|
*/
|
|
|
|
module.exports = Braces;
|