block.js
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'use strict';
var Node = require('./node');
/**
* Initialize a new `Block` with an optional `node`.
*
* @param {Node} node
* @api public
*/
var Block = module.exports = function Block(node){
this.nodes = [];
if (node) this.push(node);
};
// Inherit from `Node`.
Block.prototype = Object.create(Node.prototype);
Block.prototype.constructor = Block;
Block.prototype.type = 'Block';
/**
* Block flag.
*/
Block.prototype.isBlock = true;
/**
* Replace the nodes in `other` with the nodes
* in `this` block.
*
* @param {Block} other
* @api private
*/
Block.prototype.replace = function(other){
var err = new Error('block.replace is deprecated and will be removed in v2.0.0');
console.warn(err.stack);
other.nodes = this.nodes;
};
/**
* Push the given `node`.
*
* @param {Node} node
* @return {Number}
* @api public
*/
Block.prototype.push = function(node){
return this.nodes.push(node);
};
/**
* Check if this block is empty.
*
* @return {Boolean}
* @api public
*/
Block.prototype.isEmpty = function(){
return 0 == this.nodes.length;
};
/**
* Unshift the given `node`.
*
* @param {Node} node
* @return {Number}
* @api public
*/
Block.prototype.unshift = function(node){
return this.nodes.unshift(node);
};
/**
* Return the "last" block, or the first `yield` node.
*
* @return {Block}
* @api private
*/
Block.prototype.includeBlock = function(){
var ret = this
, node;
for (var i = 0, len = this.nodes.length; i < len; ++i) {
node = this.nodes[i];
if (node.yield) return node;
else if (node.textOnly) continue;
else if (node.includeBlock) ret = node.includeBlock();
else if (node.block && !node.block.isEmpty()) ret = node.block.includeBlock();
if (ret.yield) return ret;
}
return ret;
};
/**
* Return a clone of this block.
*
* @return {Block}
* @api private
*/
Block.prototype.clone = function(){
var err = new Error('block.clone is deprecated and will be removed in v2.0.0');
console.warn(err.stack);
var clone = new Block;
for (var i = 0, len = this.nodes.length; i < len; ++i) {
clone.push(this.nodes[i].clone());
}
return clone;
};