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-rw-r--r--js/lib/node.js271
1 files changed, 136 insertions, 135 deletions
diff --git a/js/lib/node.js b/js/lib/node.js
index f96d65c..f88dff5 100644
--- a/js/lib/node.js
+++ b/js/lib/node.js
@@ -1,182 +1,183 @@
-util = require('util');
+"use strict";
function isContainer(node) {
- var t = node.t;
- return (t == 'Document' ||
- t == 'BlockQuote' ||
- t == 'List' ||
- t == 'ListItem' ||
- t == 'Paragraph' ||
- t == 'Header' ||
- t == 'Emph' ||
- t == 'Strong' ||
- t == 'Link' ||
- t == 'Image');
+ var t = node.t;
+ return (t === 'Document' ||
+ t === 'BlockQuote' ||
+ t === 'List' ||
+ t === 'ListItem' ||
+ t === 'Paragraph' ||
+ t === 'Header' ||
+ t === 'Emph' ||
+ t === 'Strong' ||
+ t === 'Link' ||
+ t === 'Image');
}
function NodeWalker(root) {
- this.current = root;
- this.root = root;
- this.entering = true;
+ this.current = root;
+ this.root = root;
+ this.entering = true;
}
NodeWalker.prototype.resumeAt = function(node, entering) {
- this.current = node;
- this.entering = (entering === true);
+ this.current = node;
+ this.entering = (entering === true);
};
NodeWalker.prototype.next = function(){
- var cur = this.current;
- var entering = this.entering;
+ var cur = this.current;
+ var entering = this.entering;
- if (!cur)
- return null;
+ if (!cur) {
+ return null;
+ }
- var container = isContainer(cur);
+ var container = isContainer(cur);
- if (entering && container) {
- if (cur.firstChild) {
- this.current = cur.firstChild;
- this.entering = true;
- } else {
- // stay on node but exit
- this.entering = false;
- }
+ if (entering && container) {
+ if (cur.firstChild) {
+ this.current = cur.firstChild;
+ this.entering = true;
+ } else {
+ // stay on node but exit
+ this.entering = false;
+ }
- } else if (!entering && cur == this.root) {
- // don't move past root
- this.current = null;
+ } else if (!entering && cur === this.root) {
+ // don't move past root
+ this.current = null;
- } else if (cur.next) {
- this.current = cur.next;
- this.entering = true;
+ } else if (cur.next) {
+ this.current = cur.next;
+ this.entering = true;
- } else {
- this.current = cur.parent;
- this.entering = false;
- }
+ } else {
+ this.current = cur.parent;
+ this.entering = false;
+ }
- return {entering: entering, node: cur};
+ return {entering: entering, node: cur};
};
function Node(nodeType) {
- this.t = nodeType;
- this.parent = null;
- this.firstChild = null;
- this.lastChild = null;
- this.prev = null;
- this.next = null;
- this.pos = {};
+ this.t = nodeType;
+ this.parent = null;
+ this.firstChild = null;
+ this.lastChild = null;
+ this.prev = null;
+ this.next = null;
+ this.pos = {};
}
Node.prototype.isContainer = function() {
- return isContainer(this);
+ return isContainer(this);
};
Node.prototype.appendChild = function(child) {
- child.unlink();
- child.parent = this;
- if (this.lastChild) {
- this.lastChild.next = child;
- child.prev = this.lastChild;
- this.lastChild = child;
- } else {
- this.firstChild = child;
- this.lastChild = child;
- }
+ child.unlink();
+ child.parent = this;
+ if (this.lastChild) {
+ this.lastChild.next = child;
+ child.prev = this.lastChild;
+ this.lastChild = child;
+ } else {
+ this.firstChild = child;
+ this.lastChild = child;
+ }
};
Node.prototype.prependChild = function(child) {
- child.unlink();
- child.parent = this;
- if (this.firstChild) {
- this.firstChild.prev = child;
- child.next = this.firstChild;
- this.firstChild = child;
- } else {
- this.firstChild = child;
- this.lastChild = child;
- }
+ child.unlink();
+ child.parent = this;
+ if (this.firstChild) {
+ this.firstChild.prev = child;
+ child.next = this.firstChild;
+ this.firstChild = child;
+ } else {
+ this.firstChild = child;
+ this.lastChild = child;
+ }
};
Node.prototype.unlink = function() {
- if (this.prev) {
- this.prev.next = this.next;
- } else if (this.parent) {
- this.parent.firstChild = this.next;
- }
- if (this.next) {
- this.next.prev = this.prev;
- } else if (this.parent) {
- this.parent.lastChild = this.prev;
- }
- this.parent = null;
- this.next = null;
- this.prev = null;
+ if (this.prev) {
+ this.prev.next = this.next;
+ } else if (this.parent) {
+ this.parent.firstChild = this.next;
+ }
+ if (this.next) {
+ this.next.prev = this.prev;
+ } else if (this.parent) {
+ this.parent.lastChild = this.prev;
+ }
+ this.parent = null;
+ this.next = null;
+ this.prev = null;
};
Node.prototype.insertAfter = function(sibling) {
- sibling.unlink();
- sibling.next = this.next;
- if (sibling.next) {
- sibling.next.prev = sibling;
- }
- sibling.prev = this;
- this.next = sibling;
- sibling.parent = this.parent;
- if (!sibling.next) {
- sibling.parent.lastChild = sibling;
- }
+ sibling.unlink();
+ sibling.next = this.next;
+ if (sibling.next) {
+ sibling.next.prev = sibling;
+ }
+ sibling.prev = this;
+ this.next = sibling;
+ sibling.parent = this.parent;
+ if (!sibling.next) {
+ sibling.parent.lastChild = sibling;
+ }
};
Node.prototype.insertBefore = function(sibling) {
- sibling.unlink();
- sibling.prev = this.prev;
- if (sibling.prev) {
- sibling.prev.next = sibling;
- }
- sibling.next = this;
- this.prev = sibling;
- sibling.parent = this.parent;
- if (!sibling.prev) {
- sibling.parent.firstChild = sibling;
- }
+ sibling.unlink();
+ sibling.prev = this.prev;
+ if (sibling.prev) {
+ sibling.prev.next = sibling;
+ }
+ sibling.next = this;
+ this.prev = sibling;
+ sibling.parent = this.parent;
+ if (!sibling.prev) {
+ sibling.parent.firstChild = sibling;
+ }
};
Node.prototype.walker = function() {
- var walker = new NodeWalker(this);
- return walker;
+ var walker = new NodeWalker(this);
+ return walker;
};
Node.prototype.toAST = function() {
- var children;
- var cur;
- var result = { t: this.t };
-
- var propsToShow = ['t', 'c', 'list_data', 'string_content',
- 'pos', 'start_column', 'end_column',
- 'tight', 'info'];
-
- for (var i = 0; i < propsToShow.length; i++) {
- var prop = propsToShow[i];
- if (this[prop] !== undefined) {
- result[prop] = this[prop];
- }
- }
-
- if (isContainer(this)) {
- children = [];
- if (this.firstChild) {
- cur = this.firstChild;
- while (cur) {
- // TODO avoid recursion here...
- children.push(cur.toAST());
- cur = cur.next;
- }
- result.children = children;
+ var children;
+ var cur;
+ var result = { t: this.t };
+
+ var propsToShow = ['t', 'c', 'list_data', 'string_content',
+ 'pos', 'start_column', 'end_column',
+ 'tight', 'info'];
+
+ for (var i = 0; i < propsToShow.length; i++) {
+ var prop = propsToShow[i];
+ if (this[prop] !== undefined) {
+ result[prop] = this[prop];
+ }
+ }
+
+ if (isContainer(this)) {
+ children = [];
+ if (this.firstChild) {
+ cur = this.firstChild;
+ while (cur) {
+ // TODO avoid recursion here...
+ children.push(cur.toAST());
+ cur = cur.next;
+ }
+ result.children = children;
+ }
}
- }
- return result;
+ return result;
};
@@ -189,7 +190,7 @@ module.exports = Node;
var event;
while (event = walker.next()) {
- console.log(event.entering, event.node.t);
+ console.log(event.entering, event.node.t);
}
-*/
+ */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-26 08:35:58 +0000