cmark

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
@@ -2,6 +2,7 @@ cmake_minimum_required(VERSION 2.8)
 set(LIBRARY "cmark-shared")
 set(HEADERS
   cmark.h
+  ast.h
   buffer.h
   chunk.h
   references.h
@@ -14,6 +15,7 @@ set(HEADERS
   )
 set(LIBRARY_SOURCES
   cmark.c
+  ast.c
   blocks.c
   inlines.c
   print.c

diff --git a/src/ast.c b/src/ast.c
@@ -0,0 +1,30 @@
+#include <stdbool.h>
+#include <stdio.h>
+#include "buffer.h"
+#include "ast.h"
+#include "inlines.h"
+#include "references.h"
+
+// Free a node_block list and any children.
+void cmark_free_nodes(node_block *e)
+{
+	node_block * next;
+	while (e != NULL) {
+		free_inlines(e->inline_content);
+		strbuf_free(&e->string_content);
+		if (e->tag == BLOCK_FENCED_CODE) {
+			strbuf_free(&e->as.code.info);
+		} else if (e->tag == BLOCK_DOCUMENT) {
+			reference_map_free(e->as.document.refmap);
+		}
+		if (e->last_child) {
+			// Splice children into list
+			e->last_child->next = e->next;
+			e->next = e->children;
+		}
+		next = e->next;
+		free(e);
+		e = next;
+	}
+}
+

diff --git a/src/ast.h b/src/ast.h
@@ -0,0 +1,134 @@
+#ifndef _AST_H_
+#define _AST_H_
+
+#include <stdbool.h>
+#include <stdio.h>
+#include "buffer.h"
+#include "chunk.h"
+#include "references.h"
+
+struct cmark_node_inl {
+	enum {
+		CMARK_INL_STRING,
+		CMARK_INL_SOFTBREAK,
+		CMARK_INL_LINEBREAK,
+		CMARK_INL_CODE,
+		CMARK_INL_RAW_HTML,
+		CMARK_INL_EMPH,
+		CMARK_INL_STRONG,
+		CMARK_INL_LINK,
+		CMARK_INL_IMAGE
+	} tag;
+	union {
+		cmark_chunk literal;
+		struct cmark_node_inl *inlines;
+		struct {
+			struct cmark_node_inl *label;
+			unsigned char *url;
+			unsigned char *title;
+		} linkable;
+	} content;
+	struct cmark_node_inl *next;
+};
+
+typedef struct cmark_node_inl cmark_node_inl;
+
+// Types for blocks
+struct cmark_ListData {
+	enum {
+		bullet,
+		ordered
+	}  list_type;
+	int               marker_offset;
+	int               padding;
+	int               start;
+	enum {
+		period,
+		parens
+	} delimiter;
+	unsigned char     bullet_char;
+	bool              tight;
+};
+
+struct cmark_FencedCodeData {
+	int               fence_length;
+	int               fence_offset;
+	unsigned char     fence_char;
+	cmark_strbuf      info;
+};
+
+struct cmark_node_block {
+	enum {
+		CMARK_BLOCK_DOCUMENT,
+		CMARK_BLOCK_BQUOTE,
+		CMARK_BLOCK_LIST,
+		CMARK_BLOCK_LIST_ITEM,
+		CMARK_BLOCK_FENCED_CODE,
+		CMARK_BLOCK_INDENTED_CODE,
+		CMARK_BLOCK_HTML,
+		CMARK_BLOCK_PARAGRAPH,
+		CMARK_BLOCK_ATX_HEADER,
+		CMARK_BLOCK_SETEXT_HEADER,
+		CMARK_BLOCK_HRULE,
+		CMARK_BLOCK_REFERENCE_DEF
+	} tag;
+	int start_line;
+	int start_column;
+	int end_line;
+	bool open;
+	bool last_line_blank;
+	struct cmark_node_block* children;
+	struct cmark_node_block* last_child;
+	struct cmark_node_block* parent;
+	struct cmark_node_block* top;
+	cmark_strbuf string_content;
+	cmark_node_inl* inline_content;
+
+	union  {
+		struct cmark_ListData list;
+		struct cmark_FencedCodeData code;
+		struct {
+			int level;
+		} header;
+		struct {
+			cmark_reference_map *refmap;
+		} document;
+	} as;
+
+	struct cmark_node_block *next;
+	struct cmark_node_block *prev;
+};
+
+typedef struct cmark_node_block cmark_node_block;
+
+void cmark_free_nodes(cmark_node_block *e);
+
+#ifndef CMARK_NO_SHORT_NAMES
+  #define node_inl                  cmark_node_inl
+  #define INL_STRING                CMARK_INL_STRING
+  #define INL_SOFTBREAK             CMARK_INL_SOFTBREAK
+  #define INL_LINEBREAK             CMARK_INL_LINEBREAK
+  #define INL_CODE                  CMARK_INL_CODE
+  #define INL_RAW_HTML              CMARK_INL_RAW_HTML
+  #define INL_EMPH                  CMARK_INL_EMPH
+  #define INL_STRONG                CMARK_INL_STRONG
+  #define INL_LINK                  CMARK_INL_LINK
+  #define INL_IMAGE                 CMARK_INL_IMAGE
+  #define ListData                  cmark_ListData
+  #define FencedCodeData            cmark_FencedCodeData
+  #define node_block                cmark_node_block
+  #define BLOCK_DOCUMENT            CMARK_BLOCK_DOCUMENT
+  #define BLOCK_BQUOTE              CMARK_BLOCK_BQUOTE
+  #define BLOCK_LIST                CMARK_BLOCK_LIST
+  #define BLOCK_LIST_ITEM           CMARK_BLOCK_LIST_ITEM
+  #define BLOCK_FENCED_CODE         CMARK_BLOCK_FENCED_CODE
+  #define BLOCK_INDENTED_CODE       CMARK_BLOCK_INDENTED_CODE
+  #define BLOCK_HTML                CMARK_BLOCK_HTML
+  #define BLOCK_PARAGRAPH           CMARK_BLOCK_PARAGRAPH
+  #define BLOCK_ATX_HEADER          CMARK_BLOCK_ATX_HEADER
+  #define BLOCK_SETEXT_HEADER       CMARK_BLOCK_SETEXT_HEADER
+  #define BLOCK_HRULE               CMARK_BLOCK_HRULE
+  #define BLOCK_REFERENCE_DEF       CMARK_BLOCK_REFERENCE_DEF
+#endif
+
+#endif

diff --git a/src/blocks.c b/src/blocks.c
@@ -253,29 +253,6 @@ static node_block* add_child(node_block* parent,
 }
 
 
-// Free a node_block list and any children.
-void cmark_free_nodes(node_block *e)
-{
-	node_block * next;
-	while (e != NULL) {
-		free_inlines(e->inline_content);
-		strbuf_free(&e->string_content);
-		if (e->tag == BLOCK_FENCED_CODE) {
-			strbuf_free(&e->as.code.info);
-		} else if (e->tag == BLOCK_DOCUMENT) {
-			reference_map_free(e->as.document.refmap);
-		}
-		if (e->last_child) {
-			// Splice children into list
-			e->last_child->next = e->next;
-			e->next = e->children;
-		}
-		next = e->next;
-		free(e);
-		e = next;
-	}
-}
-
 typedef struct BlockStack {
 	struct BlockStack *previous;
 	node_block *next_sibling;

diff --git a/src/cmark.h b/src/cmark.h
@@ -4,8 +4,7 @@
 #include <stdbool.h>
 #include <stdio.h>
 #include "buffer.h"
-#include "chunk.h"
-#include "references.h"
+#include "ast.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -16,105 +15,9 @@ extern "C" {
 
 #define CMARK_MAX_LINK_LABEL_LENGTH 1000
 
-struct cmark_node_inl {
-	enum {
-		CMARK_INL_STRING,
-		CMARK_INL_SOFTBREAK,
-		CMARK_INL_LINEBREAK,
-		CMARK_INL_CODE,
-		CMARK_INL_RAW_HTML,
-		CMARK_INL_EMPH,
-		CMARK_INL_STRONG,
-		CMARK_INL_LINK,
-		CMARK_INL_IMAGE
-	} tag;
-	union {
-		cmark_chunk literal;
-		struct cmark_node_inl *inlines;
-		struct {
-			struct cmark_node_inl *label;
-			unsigned char *url;
-			unsigned char *title;
-		} linkable;
-	} content;
-	struct cmark_node_inl *next;
-};
-
-typedef struct cmark_node_inl cmark_node_inl;
-
-// Types for blocks
-struct cmark_ListData {
-	enum {
-		bullet,
-		ordered
-	}  list_type;
-	int               marker_offset;
-	int               padding;
-	int               start;
-	enum {
-		period,
-		parens
-	} delimiter;
-	unsigned char     bullet_char;
-	bool              tight;
-};
-
-struct cmark_FencedCodeData {
-	int               fence_length;
-	int               fence_offset;
-	unsigned char     fence_char;
-	cmark_strbuf      info;
-};
-
-struct cmark_node_block {
-	enum {
-		CMARK_BLOCK_DOCUMENT,
-		CMARK_BLOCK_BQUOTE,
-		CMARK_BLOCK_LIST,
-		CMARK_BLOCK_LIST_ITEM,
-		CMARK_BLOCK_FENCED_CODE,
-		CMARK_BLOCK_INDENTED_CODE,
-		CMARK_BLOCK_HTML,
-		CMARK_BLOCK_PARAGRAPH,
-		CMARK_BLOCK_ATX_HEADER,
-		CMARK_BLOCK_SETEXT_HEADER,
-		CMARK_BLOCK_HRULE,
-		CMARK_BLOCK_REFERENCE_DEF
-	} tag;
-	int start_line;
-	int start_column;
-	int end_line;
-	bool open;
-	bool last_line_blank;
-	struct cmark_node_block* children;
-	struct cmark_node_block* last_child;
-	struct cmark_node_block* parent;
-	struct cmark_node_block* top;
-	cmark_strbuf string_content;
-	cmark_node_inl* inline_content;
-
-	union  {
-		struct cmark_ListData list;
-		struct cmark_FencedCodeData code;
-		struct {
-			int level;
-		} header;
-		struct {
-			cmark_reference_map *refmap;
-		} document;
-	} as;
-
-	struct cmark_node_block *next;
-	struct cmark_node_block *prev;
-};
-
-typedef struct cmark_node_block cmark_node_block;
-
 cmark_node_block *cmark_parse_document(const unsigned char *buffer, size_t len);
 cmark_node_block *cmark_parse_file(FILE *f);
 
-void cmark_free_nodes(cmark_node_block *e);
-
 void cmark_debug_print(cmark_node_block *root);
 void cmark_render_html(cmark_strbuf *html, cmark_node_block *root);
 
@@ -124,31 +27,6 @@ unsigned char *cmark_markdown_to_html(unsigned char *text, int len);
   #define VERSION                   CMARK_VERSION
   #define CODE_INDENT               CMARK_CODE_INDENT
   #define MAX_LINK_LABEL_LENGTH     CMARK_MAX_LINK_LABEL_LENGTH
-  #define node_inl                  cmark_node_inl
-  #define INL_STRING                CMARK_INL_STRING
-  #define INL_SOFTBREAK             CMARK_INL_SOFTBREAK
-  #define INL_LINEBREAK             CMARK_INL_LINEBREAK
-  #define INL_CODE                  CMARK_INL_CODE
-  #define INL_RAW_HTML              CMARK_INL_RAW_HTML
-  #define INL_EMPH                  CMARK_INL_EMPH
-  #define INL_STRONG                CMARK_INL_STRONG
-  #define INL_LINK                  CMARK_INL_LINK
-  #define INL_IMAGE                 CMARK_INL_IMAGE
-  #define ListData                  cmark_ListData
-  #define FencedCodeData            cmark_FencedCodeData
-  #define node_block                cmark_node_block
-  #define BLOCK_DOCUMENT            CMARK_BLOCK_DOCUMENT
-  #define BLOCK_BQUOTE              CMARK_BLOCK_BQUOTE
-  #define BLOCK_LIST                CMARK_BLOCK_LIST
-  #define BLOCK_LIST_ITEM           CMARK_BLOCK_LIST_ITEM
-  #define BLOCK_FENCED_CODE         CMARK_BLOCK_FENCED_CODE
-  #define BLOCK_INDENTED_CODE       CMARK_BLOCK_INDENTED_CODE
-  #define BLOCK_HTML                CMARK_BLOCK_HTML
-  #define BLOCK_PARAGRAPH           CMARK_BLOCK_PARAGRAPH
-  #define BLOCK_ATX_HEADER          CMARK_BLOCK_ATX_HEADER
-  #define BLOCK_SETEXT_HEADER       CMARK_BLOCK_SETEXT_HEADER
-  #define BLOCK_HRULE               CMARK_BLOCK_HRULE
-  #define BLOCK_REFERENCE_DEF       CMARK_BLOCK_REFERENCE_DEF
 #endif
 
 #ifdef __cplusplus