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ghostwriter/src/MarkdownAST.h at master · jackcoolpython/ghostwriter · GitHub
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MarkdownAST.h
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/*
**********************************************************************
*
* Copyright (C) 2020 wereturtle
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
**********************************************************************
*/
#
ifndef
MARKDOWN_AST_H
#
define
MARKDOWN_AST_H
#
include
<
QLinkedList
>
#
include
"
cmark-gfm.h
"
#
include
"
MarkdownNode.h
"
#
include
"
MemoryArena.h
"
/*
*
* This class encapsulates an abstact syntax tree of Markdown nodes.
* Use this class to clone a cmark_node AST and perform searches
* on the tree.
*
* Note: Due to cmark-gfm's memory arena used ot allocate cmark_node
* objects being non-reentrant, this class is used to clone
* a cmark_node AST to prevent node memory from being overwritten
* by another call to the cmark-gfm API.
*/
class
MarkdownAST
{
public:
/*
*
* Constructor
*/
MarkdownAST
();
/*
*
* Constructor. Clones the given cmark_node AST into a
* MarkdownNode AST.
*/
MarkdownAST
(cmark_node* root);
/*
*
* Destructor.
*/
~MarkdownAST
();
/*
*
* Returns the root node of the AST or NULL if none is set.
*/
MarkdownNode*
getRoot
();
/*
*
* Sets the root node of the AST, cloning the given cmark_node AST into
* a MarkdownNode AST. Note that calling this routine will free the
* memory for the prior AST root node.
*/
void
setRoot
(cmark_node* root);
/*
*
* Finds the deepest node of type block (vs. inline) at the given
* line number of the original Markdown text. Returns NULL if
* no node is found at that location.
*/
MarkdownNode*
findBlockAtLine
(
int
lineNumber)
const
;
/*
*
* Returns a list of all nodes that are of type heading, exluding
* those that are nested within block quotes or lists.
*/
QVector<MarkdownNode*>
getHeadings
()
const
;
/*
*
* Frees memory for this AST.
*/
void
clear
();
/*
*
* Returns a string representation of this tree for use in debugging.
*/
QString
toString
()
const
;
private:
MemoryArena<MarkdownNode> arena;
MarkdownNode* root;
};
#
endif
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