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Syntax editor: unwrap feature

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This commit is contained in:
john.j.camilleri
2012-12-11 15:09:16 +00:00
parent acd2f73c8c
commit 60f8a6b647
2 changed files with 80 additions and 14 deletions
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27
src/www/syntax-editor/ast.js
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@@ -103,6 +103,9 @@ function AST(fun, cat) {
// return !this.hasParent();
}
this.getRoot = function() {
return this.root;
}
this.getFun = function() {
return this.currentNode.fun;
}
@@ -142,8 +145,8 @@ function AST(fun, cat) {
}
// Wrap the current node inside another node
// Doesn't check whether child_id is within in range
this.wrap = function(typeobj, child_id) {
// Doesn't check whether child_ix is within in range
this.wrap = function(typeobj, child_ix) {
var subtree = new ASTNode(this.currentNode);
this.currentNode.fun = typeobj.name;
this.currentNode.cat = typeobj.ret;
@@ -151,10 +154,28 @@ function AST(fun, cat) {
for (var i in typeobj.args) {
this.add(null, typeobj.args[i]);
}
this.currentNode.children[child_id] = subtree;
this.currentNode.children[child_ix] = subtree;
return subtree;
}
// Wrap the current node inside another node
// Doesn't check whether child_ix is within in range
this.unwrap = function() {
var parent_id = this.currentID.clone();
parent_id.get().pop();
if (parent_id.get().length==1) {
this.root = this.currentNode;
this.currentID = new NodeID();
} else {
var gparent_id = parent_id.clone();
gparent_id.get().pop();
var gparent = this.find(gparent_id);
child_ix = parent_id.clone().get().pop();
gparent.children[child_ix] = this.currentNode;
this.currentID = parent_id;
}
}
// Determine if current node is writable (empty/no children)
this.is_writable=function() {
var cn = this.currentNode;