Class: CommonMarker::Node

Inherits:

Object

• Object
• CommonMarker::Node

Includes:

Inspect, Enumerable

Defined in:

lib/commonmarker/node.rb,
lib/commonmarker/node/inspect.rb,
ext/commonmarker/commonmarker.c

Defined Under Namespace

Modules: Inspect

Constant Summary

Constants included from Inspect

Inspect::PP_INDENT_SIZE

Class Method Summary

• .markdown_to_html(rb_text, rb_options, rb_extensions) ⇒ Object

  Internal: Parses a Markdown string into an HTML string.

• .markdown_to_xml(rb_text, rb_options, rb_extensions) ⇒ Object

  Internal: Parses a Markdown string into an HTML string.

• .new(type) ⇒ Object

  Internal: Creates a node based on a node type.

• .parse_document(rb_text, rb_len, rb_options, rb_extensions) ⇒ Object

  Internal: Parses a Markdown string into a document.

Instance Method Summary

• #_render_commonmark(*args) ⇒ Object

  Internal: Convert the node to a CommonMark string.

• #_render_html(rb_options, rb_extensions) ⇒ Object

  Internal: Convert the node to an HTML string.

• #_render_plaintext(*args) ⇒ Object

  Internal: Convert the node to a plain textstring.

• #_render_xml(rb_options) ⇒ Object

  Internal: Convert the node to an XML string.

• #append_child(child) ⇒ Object

  Public: Inserts a node as the last child of the current node.

• #delete ⇒ Object

  Internal: Unlinks the node from the tree (fixing pointers in parents and siblings appropriately).

• #each ⇒ Object

  Public: Iterate over the children (if any) of the current pointer.

• #each_child(&block) ⇒ Object

  Deprecated: Please use ‘each` instead.

• #fence_info ⇒ Object

  Public: Gets the fence info of the current node (must be a ‘:code_block`).

• #fence_info=(info) ⇒ Object

  Public: Sets the fence info of the current node (must be a ‘:code_block`).

• #first_child ⇒ Object

  Public: Fetches the first child of the node.

• #header_level ⇒ Object

  Public: Gets the header level of the current node (must be a ‘:header`).

• #header_level=(level) ⇒ Object

  Public: Sets the header level of the current node (must be a ‘:header`).

• #html_escape_href(rb_text) ⇒ Object

  Internal: Escapes href URLs safely.

• #html_escape_html(rb_text) ⇒ Object

  Internal: Escapes HTML content safely.

• #insert_after(sibling) ⇒ Object

  Public: Inserts a node as a sibling after the current node.

• #insert_before(sibling) ⇒ Object

  Public: Inserts a node as a sibling before the current node.

• #last_child ⇒ Object

  Public: Fetches the first child of the current node.

• #list_start ⇒ Object

  Public: Gets the starting number the current node (must be an ‘:ordered_list`).

• #list_start=(start) ⇒ Object

  Public: Sets the starting number of the current node (must be an ‘:ordered_list`).

• #list_tight ⇒ Object

  Public: Gets the tight status the current node (must be a ‘:list`).

• #list_tight=(tight) ⇒ Object

  Public: Sets the tight status of the current node (must be a ‘:list`).

• #list_type ⇒ Object

  Public: Gets the list type of the current node (must be a ‘:list`).

• #list_type=(list_type) ⇒ Object

  Public: Sets the list type of the current node (must be a ‘:list`).

• #next ⇒ Object

  Public: Fetches the next sibling of the node.

• #parent ⇒ Object

  Public: Fetches the parent of the current node.

• #prepend_child(child) ⇒ Object

  Public: Inserts a node as the first child of the current node.

• #previous ⇒ Object

  Public: Fetches the previous sibling of the current node.

• #sourcepos ⇒ Object

  Public: Fetches the sourcepos of the node.

• #string_content ⇒ Object

  Public: Fetch the string contents of the node.

• #string_content=(s) ⇒ Object

  Public: Sets the string content of the node.

• #table_alignments ⇒ Object
• #tasklist_item_checked=(item_checked) ⇒ Object

  Public: Sets the checkbox state of the current node (must be a ‘:tasklist`).

• #tasklist_item_checked? ⇒ Boolean
• #tasklist_state ⇒ Object

  TODO: remove this, superseded by the above method.

• #title ⇒ Object

  Public: Gets the title of the current node (must be a ‘:link` or `:image`).

• #title=(title) ⇒ Object

  Public: Sets the title of the current node (must be a ‘:link` or `:image`).

• #to_commonmark(options = :DEFAULT, width = 120) ⇒ Object

  Public: Convert the node to a CommonMark string.

• #to_html(options = :DEFAULT, extensions = []) ⇒ Object

  Public: Convert the node to an HTML string.

• #to_plaintext(options = :DEFAULT, width = 120) ⇒ Object

  Public: Convert the node to a plain text string.

• #to_xml(options = :DEFAULT) ⇒ Object

  Public: Convert the node to an XML string.

• #type ⇒ Object

  Public: Fetches the list type of the node.

• #type_string ⇒ Object

  Public: Returns the type of the current pointer as a string.

• #url ⇒ Object

  Public: Gets the URL of the current node (must be a ‘:link` or `:image`).

• #url=(url) ⇒ Object

  Public: Sets the URL of the current node (must be a ‘:link` or `:image`).

• #walk {|_self| ... } ⇒ Object

  Public: An iterator that “walks the tree,” descending into children recursively.

Methods included from Inspect

#inspect, #pretty_print

Class Method Details

.markdown_to_html(rb_text, rb_options, rb_extensions) ⇒ Object

Internal: Parses a Markdown string into an HTML string.

# File 'ext/commonmarker/commonmarker.c', line 155

static VALUE rb_markdown_to_html(VALUE self, VALUE rb_text, VALUE rb_options, VALUE rb_extensions) {
  char *html;
  cmark_parser *parser;
  cmark_node *doc;

  Check_Type(rb_text, T_STRING);

  parser = prepare_parser(rb_options, rb_extensions);

  cmark_parser_feed(parser, StringValuePtr(rb_text), RSTRING_LEN(rb_text));
  doc = cmark_parser_finish(parser);

  if (doc == NULL) {
    cmark_parser_free(parser);
    rb_raise(rb_eNodeError, "error parsing document");
  }

  html = cmark_render_html(doc, parser->options, parser->syntax_extensions);

  cmark_parser_free(parser);
  cmark_node_free(doc);

  return commonmarker_cstr_adopt(html, rb_utf8_encoding());
}

.markdown_to_xml(rb_text, rb_options, rb_extensions) ⇒ Object

Internal: Parses a Markdown string into an HTML string.

# File 'ext/commonmarker/commonmarker.c', line 184

static VALUE rb_markdown_to_xml(VALUE self, VALUE rb_text, VALUE rb_options, VALUE rb_extensions) {
  char *xml;
  cmark_parser *parser;
  cmark_node *doc;

  Check_Type(rb_text, T_STRING);

  parser = prepare_parser(rb_options, rb_extensions);

  cmark_parser_feed(parser, StringValuePtr(rb_text), RSTRING_LEN(rb_text));
  doc = cmark_parser_finish(parser);

  if (doc == NULL) {
    cmark_parser_free(parser);
    rb_raise(rb_eNodeError, "error parsing document");
  }

  xml = cmark_render_xml(doc, parser->options);

  cmark_parser_free(parser);
  cmark_node_free(doc);

  return commonmarker_cstr_adopt(xml, rb_utf8_encoding());
}

.new(type) ⇒ Object

Internal: Creates a node based on a node type.

type - A Symbol representing the node to be created. Must be one of the following:

• ‘:document`

• ‘:blockquote`

• ‘:list`

• ‘:list_item`

• ‘:code_block`

• ‘:html`

• ‘:paragraph`

• ‘:header`

• ‘:hrule`

• ‘:text`

• ‘:softbreak`

• ‘:linebreak`

• ‘:code`

• ‘:inline_html`

• ‘:emph`

• ‘:strong`

• ‘:link`

• ‘:image`

# File 'ext/commonmarker/commonmarker.c', line 233

static VALUE rb_node_new(VALUE self, VALUE type) {
  cmark_node_type node_type = 0;
  cmark_node *node;

  Check_Type(type, T_SYMBOL);

  if (type == sym_document)
    node_type = CMARK_NODE_DOCUMENT;
  else if (type == sym_blockquote)
    node_type = CMARK_NODE_BLOCK_QUOTE;
  else if (type == sym_list)
    node_type = CMARK_NODE_LIST;
  else if (type == sym_list_item)
    node_type = CMARK_NODE_ITEM;
  else if (type == sym_code_block)
    node_type = CMARK_NODE_CODE_BLOCK;
  else if (type == sym_html)
    node_type = CMARK_NODE_HTML;
  else if (type == sym_paragraph)
    node_type = CMARK_NODE_PARAGRAPH;
  else if (type == sym_header)
    node_type = CMARK_NODE_HEADER;
  else if (type == sym_hrule)
    node_type = CMARK_NODE_HRULE;
  else if (type == sym_text)
    node_type = CMARK_NODE_TEXT;
  else if (type == sym_softbreak)
    node_type = CMARK_NODE_SOFTBREAK;
  else if (type == sym_linebreak)
    node_type = CMARK_NODE_LINEBREAK;
  else if (type == sym_code)
    node_type = CMARK_NODE_CODE;
  else if (type == sym_inline_html)
    node_type = CMARK_NODE_INLINE_HTML;
  else if (type == sym_emph)
    node_type = CMARK_NODE_EMPH;
  else if (type == sym_strong)
    node_type = CMARK_NODE_STRONG;
  else if (type == sym_link)
    node_type = CMARK_NODE_LINK;
  else if (type == sym_image)
    node_type = CMARK_NODE_IMAGE;
  else if (type == sym_footnote_reference)
    node_type = CMARK_NODE_FOOTNOTE_REFERENCE;
  else if (type == sym_footnote_definition)
    node_type = CMARK_NODE_FOOTNOTE_DEFINITION;
  else
    rb_raise(rb_eNodeError, "invalid node of type %d", node_type);

  node = cmark_node_new(node_type);
  if (node == NULL) {
    rb_raise(rb_eNodeError, "could not create node of type %d", node_type);
  }

  return rb_node_to_value(node);
}

.parse_document(rb_text, rb_len, rb_options, rb_extensions) ⇒ Object

Internal: Parses a Markdown string into a document.

# File 'ext/commonmarker/commonmarker.c', line 294

static VALUE rb_parse_document(VALUE self, VALUE rb_text, VALUE rb_len,
                               VALUE rb_options, VALUE rb_extensions) {
  char *text;
  int len;
  cmark_parser *parser;
  cmark_node *doc;
  Check_Type(rb_text, T_STRING);
  Check_Type(rb_len, T_FIXNUM);
  Check_Type(rb_options, T_FIXNUM);

  parser = prepare_parser(rb_options, rb_extensions);

  text = (char *)RSTRING_PTR(rb_text);
  len = FIX2INT(rb_len);

  cmark_parser_feed(parser, text, len);
  doc = cmark_parser_finish(parser);
  if (doc == NULL) {
    rb_raise(rb_eNodeError, "error parsing document");
  }
  cmark_parser_free(parser);

  return rb_node_to_value(doc);
}

Instance Method Details

#_render_commonmark(*args) ⇒ Object

Internal: Convert the node to a CommonMark string.

Returns a String.

# File 'ext/commonmarker/commonmarker.c', line 621

static VALUE rb_render_commonmark(int argc, VALUE *argv, VALUE self) {
  VALUE rb_options, rb_width;
  rb_scan_args(argc, argv, "11", &rb_options, &rb_width);

  int width = 120;
  if (!NIL_P(rb_width)) {
    Check_Type(rb_width, T_FIXNUM);
    width = FIX2INT(rb_width);
  }

  int options;
  cmark_node *node;
  Check_Type(rb_options, T_FIXNUM);

  options = FIX2INT(rb_options);
  Data_Get_Struct(self, cmark_node, node);

  char *cmark = cmark_render_commonmark(node, options, width);
  VALUE ruby_cmark = rb_str_new2(cmark);
  free(cmark);

  return ruby_cmark;
}

#_render_html(rb_options, rb_extensions) ⇒ Object

Internal: Convert the node to an HTML string.

Returns a String.

# File 'ext/commonmarker/commonmarker.c', line 553

static VALUE rb_render_html(VALUE self, VALUE rb_options, VALUE rb_extensions) {
  int options, extensions_len;
  VALUE rb_ext_name;
  int i;
  cmark_node *node;
  cmark_llist *extensions = NULL;
  cmark_mem *mem = cmark_get_default_mem_allocator();
  Check_Type(rb_options, T_FIXNUM);
  Check_Type(rb_extensions, T_ARRAY);

  options = FIX2INT(rb_options);
  extensions_len = RARRAY_LEN(rb_extensions);

  Data_Get_Struct(self, cmark_node, node);

  for (i = 0; i < extensions_len; ++i) {
    rb_ext_name = RARRAY_PTR(rb_extensions)[i];

    if (!SYMBOL_P(rb_ext_name)) {
      cmark_llist_free(mem, extensions);
      rb_raise(rb_eTypeError, "extension names should be Symbols; got a %"PRIsVALUE"", rb_obj_class(rb_ext_name));
    }

    cmark_syntax_extension *syntax_extension =
      cmark_find_syntax_extension(rb_id2name(SYM2ID(rb_ext_name)));

    if (!syntax_extension) {
      cmark_llist_free(mem, extensions);
      rb_raise(rb_eArgError, "extension %s not found\n", rb_id2name(SYM2ID(rb_ext_name)));
    }

    extensions = cmark_llist_append(mem, extensions, syntax_extension);
  }

  char *html = cmark_render_html(node, options, extensions);
  VALUE ruby_html = rb_str_new2(html);

  cmark_llist_free(mem, extensions);
  free(html);

  return ruby_html;
}

#_render_plaintext(*args) ⇒ Object

Internal: Convert the node to a plain textstring.

Returns a String.

# File 'ext/commonmarker/commonmarker.c', line 649

static VALUE rb_render_plaintext(int argc, VALUE *argv, VALUE self) {
  VALUE rb_options, rb_width;
  rb_scan_args(argc, argv, "11", &rb_options, &rb_width);

  int width = 120;
  if (!NIL_P(rb_width)) {
    Check_Type(rb_width, T_FIXNUM);
    width = FIX2INT(rb_width);
  }

  int options;
  cmark_node *node;
  Check_Type(rb_options, T_FIXNUM);

  options = FIX2INT(rb_options);
  Data_Get_Struct(self, cmark_node, node);

  char *text = cmark_render_plaintext(node, options, width);
  VALUE ruby_text = rb_str_new2(text);
  free(text);

  return ruby_text;
}

#_render_xml(rb_options) ⇒ Object

Internal: Convert the node to an XML string.

Returns a String.

# File 'ext/commonmarker/commonmarker.c', line 600

static VALUE rb_render_xml(VALUE self, VALUE rb_options) {
  int options;
  cmark_node *node;
  Check_Type(rb_options, T_FIXNUM);

  options = FIX2INT(rb_options);

  Data_Get_Struct(self, cmark_node, node);

  char *xml = cmark_render_xml(node, options);
  VALUE ruby_xml = rb_str_new2(xml);

  free(xml);

  return ruby_xml;
}

#append_child(child) ⇒ Object

Public: Inserts a node as the last child of the current node.

child - A child CommonMarker::Node to insert.

Returns ‘true` if successful. Raises NodeError if the node can’t be inserted.

# File 'ext/commonmarker/commonmarker.c', line 727

static VALUE rb_node_append_child(VALUE self, VALUE child) {
  cmark_node *node1, *node2;
  Data_Get_Struct(self, cmark_node, node1);

  Data_Get_Struct(child, cmark_node, node2);

  if (!cmark_node_append_child(node1, node2)) {
    rb_raise(rb_eNodeError, "could not append child");
  }

  rb_parent_added(child);

  return Qtrue;
}

#delete ⇒ Object

Internal: Unlinks the node from the tree (fixing pointers in parents and siblings appropriately).

# File 'ext/commonmarker/commonmarker.c', line 489

static VALUE rb_node_unlink(VALUE self) {
  cmark_node *node;
  Data_Get_Struct(self, cmark_node, node);

  cmark_node_unlink(node);

  rb_parent_removed(self);

  return Qnil;
}

#each ⇒ Object

Public: Iterate over the children (if any) of the current pointer.

# File 'lib/commonmarker/node.rb', line 66

def each
  return enum_for(:each) unless block_given?

  child = first_child
  while child
    nextchild = child.next
    yield child
    child = nextchild
  end
end

#each_child(&block) ⇒ Object

Deprecated: Please use ‘each` instead

# File 'lib/commonmarker/node.rb', line 78

def each_child(&block)
  warn("[DEPRECATION] `each_child` is deprecated.  Please use `each` instead.")
  each(&block)
end

#fence_info ⇒ Object

Public: Gets the fence info of the current node (must be a ‘:code_block`).

Returns a String representing the fence info. Raises a NodeError if the fence info can’t be retrieved.

# File 'ext/commonmarker/commonmarker.c', line 1048

static VALUE rb_node_get_fence_info(VALUE self) {
  const char *fence_info;
  cmark_node *node;
  Data_Get_Struct(self, cmark_node, node);

  fence_info = cmark_node_get_fence_info(node);

  if (fence_info == NULL) {
    rb_raise(rb_eNodeError, "could not get fence_info");
  }

  return rb_str_new2(fence_info);
}

#fence_info=(info) ⇒ Object

Public: Sets the fence info of the current node (must be a ‘:code_block`).

info - A String representing the new fence info

Raises a NodeError if the fence info can’t be set.

# File 'ext/commonmarker/commonmarker.c', line 1069

static VALUE rb_node_set_fence_info(VALUE self, VALUE info) {
  char *text;
  cmark_node *node;
  Check_Type(info, T_STRING);

  Data_Get_Struct(self, cmark_node, node);
  text = StringValueCStr(info);

  if (!cmark_node_set_fence_info(node, text)) {
    rb_raise(rb_eNodeError, "could not set fence_info");
  }

  return Qnil;
}

#first_child ⇒ Object

Public: Fetches the first child of the node.

Returns a CommonMarker::Node if a child exists, ‘nil` otherise.

# File 'ext/commonmarker/commonmarker.c', line 504

static VALUE rb_node_first_child(VALUE self) {
  cmark_node *node, *child;
  Data_Get_Struct(self, cmark_node, node);

  child = cmark_node_first_child(node);

  return rb_node_to_value(child);
}

#header_level ⇒ Object

Public: Gets the header level of the current node (must be a ‘:header`).

Returns a Number representing the header level. Raises a NodeError if the header level can’t be retrieved.

# File 'ext/commonmarker/commonmarker.c', line 869

static VALUE rb_node_get_header_level(VALUE self) {
  int header_level;
  cmark_node *node;
  Data_Get_Struct(self, cmark_node, node);

  header_level = cmark_node_get_header_level(node);

  if (header_level == 0) {
    rb_raise(rb_eNodeError, "could not get header_level");
  }

  return INT2NUM(header_level);
}

#header_level=(level) ⇒ Object

Public: Sets the header level of the current node (must be a ‘:header`).

level - A Number representing the new header level

Raises a NodeError if the header level can’t be set.

# File 'ext/commonmarker/commonmarker.c', line 890

static VALUE rb_node_set_header_level(VALUE self, VALUE level) {
  int l;
  cmark_node *node;
  Check_Type(level, T_FIXNUM);

  Data_Get_Struct(self, cmark_node, node);
  l = FIX2INT(level);

  if (!cmark_node_set_header_level(node, l)) {
    rb_raise(rb_eNodeError, "could not set header_level");
  }

  return Qnil;
}

#html_escape_href(rb_text) ⇒ Object

Internal: Escapes href URLs safely.

# File 'ext/commonmarker/commonmarker.c', line 1167

static VALUE rb_html_escape_href(VALUE self, VALUE rb_text) {
  char *result;
  cmark_node *node;
  Check_Type(rb_text, T_STRING);

  Data_Get_Struct(self, cmark_node, node);

  cmark_mem *mem = cmark_node_mem(node);
  cmark_strbuf buf = CMARK_BUF_INIT(mem);

  if (houdini_escape_href(&buf, (const uint8_t *)RSTRING_PTR(rb_text),
                          RSTRING_LEN(rb_text))) {
    result = (char *)cmark_strbuf_detach(&buf);
    return commonmarker_cstr_adopt(result, rb_enc_get(rb_text));

  }

  return rb_text;
}

#html_escape_html(rb_text) ⇒ Object

Internal: Escapes HTML content safely.

# File 'ext/commonmarker/commonmarker.c', line 1188

static VALUE rb_html_escape_html(VALUE self, VALUE rb_text) {
  char *result;
  cmark_node *node;
  Check_Type(rb_text, T_STRING);

  Data_Get_Struct(self, cmark_node, node);

  cmark_mem *mem = cmark_node_mem(node);
  cmark_strbuf buf = CMARK_BUF_INIT(mem);

  if (houdini_escape_html0(&buf, (const uint8_t *)RSTRING_PTR(rb_text),
                           RSTRING_LEN(rb_text), 0)) {
    result = (char *)cmark_strbuf_detach(&buf);
    return commonmarker_cstr_adopt(result, rb_enc_get(rb_text));
  }

  return rb_text;
}

#insert_after(sibling) ⇒ Object

Public: Inserts a node as a sibling after the current node.

sibling - A sibling CommonMarker::Node to insert.

Returns ‘true` if successful. Raises NodeError if the node can’t be inserted.

# File 'ext/commonmarker/commonmarker.c', line 681

static VALUE rb_node_insert_after(VALUE self, VALUE sibling) {
  cmark_node *node1, *node2;
  Data_Get_Struct(self, cmark_node, node1);

  Data_Get_Struct(sibling, cmark_node, node2);

  if (!cmark_node_insert_after(node1, node2)) {
    rb_raise(rb_eNodeError, "could not insert after");
  }

  rb_parent_added(sibling);

  return Qtrue;
}

#insert_before(sibling) ⇒ Object

Public: Inserts a node as a sibling before the current node.

sibling - A sibling CommonMarker::Node to insert.

Returns ‘true` if successful. Raises NodeError if the node can’t be inserted.

# File 'ext/commonmarker/commonmarker.c', line 534

static VALUE rb_node_insert_before(VALUE self, VALUE sibling) {
  cmark_node *node1, *node2;
  Data_Get_Struct(self, cmark_node, node1);

  Data_Get_Struct(sibling, cmark_node, node2);

  if (!cmark_node_insert_before(node1, node2)) {
    rb_raise(rb_eNodeError, "could not insert before");
  }

  rb_parent_added(sibling);

  return Qtrue;
}

#last_child ⇒ Object

Public: Fetches the first child of the current node.

Returns a CommonMarker::Node if a child exists, ‘nil` otherise.

# File 'ext/commonmarker/commonmarker.c', line 746

static VALUE rb_node_last_child(VALUE self) {
  cmark_node *node, *child;
  Data_Get_Struct(self, cmark_node, node);

  child = cmark_node_last_child(node);

  return rb_node_to_value(child);
}

#list_start ⇒ Object

Public: Gets the starting number the current node (must be an ‘:ordered_list`).

Returns a Number representing the starting number. Raises a NodeError if the starting number can’t be retrieved.

# File 'ext/commonmarker/commonmarker.c', line 966

static VALUE rb_node_get_list_start(VALUE self) {
  cmark_node *node;
  Data_Get_Struct(self, cmark_node, node);

  if (cmark_node_get_type(node) != CMARK_NODE_LIST ||
      cmark_node_get_list_type(node) != CMARK_ORDERED_LIST) {
    rb_raise(rb_eNodeError, "can't get list_start for non-ordered list %d",
             cmark_node_get_list_type(node));
  }

  return INT2NUM(cmark_node_get_list_start(node));
}

#list_start=(start) ⇒ Object

Public: Sets the starting number of the current node (must be an ‘:ordered_list`).

level - A Number representing the new starting number

Raises a NodeError if the starting number can’t be set.

# File 'ext/commonmarker/commonmarker.c', line 987

static VALUE rb_node_set_list_start(VALUE self, VALUE start) {
  int s;
  cmark_node *node;
  Check_Type(start, T_FIXNUM);

  Data_Get_Struct(self, cmark_node, node);
  s = FIX2INT(start);

  if (!cmark_node_set_list_start(node, s)) {
    rb_raise(rb_eNodeError, "could not set list_start");
  }

  return Qnil;
}

#list_tight ⇒ Object

Public: Gets the tight status the current node (must be a ‘:list`).

Returns a ‘true` if the list is tight, `false` otherwise. Raises a NodeError if the starting number can’t be retrieved.

# File 'ext/commonmarker/commonmarker.c', line 1008

static VALUE rb_node_get_list_tight(VALUE self) {
  int flag;
  cmark_node *node;
  Data_Get_Struct(self, cmark_node, node);

  if (cmark_node_get_type(node) != CMARK_NODE_LIST) {
    rb_raise(rb_eNodeError, "can't get list_tight for non-list");
  }

  flag = cmark_node_get_list_tight(node);

  return flag ? Qtrue : Qfalse;
}

#list_tight=(tight) ⇒ Object

Public: Sets the tight status of the current node (must be a ‘:list`).

tight - A Boolean representing the new tightness

Raises a NodeError if the tightness can’t be set.

# File 'ext/commonmarker/commonmarker.c', line 1029

static VALUE rb_node_set_list_tight(VALUE self, VALUE tight) {
  int t;
  cmark_node *node;
  Data_Get_Struct(self, cmark_node, node);
  t = RTEST(tight);

  if (!cmark_node_set_list_tight(node, t)) {
    rb_raise(rb_eNodeError, "could not set list_tight");
  }

  return Qnil;
}

#list_type ⇒ Object

Public: Gets the list type of the current node (must be a ‘:list`).

Returns a Symbol. Raises a NodeError if the title can’t be retrieved.

# File 'ext/commonmarker/commonmarker.c', line 911

static VALUE rb_node_get_list_type(VALUE self) {
  int list_type;
  cmark_node *node;
  VALUE symbol;
  Data_Get_Struct(self, cmark_node, node);

  list_type = cmark_node_get_list_type(node);

  if (list_type == CMARK_BULLET_LIST) {
    symbol = sym_bullet_list;
  } else if (list_type == CMARK_ORDERED_LIST) {
    symbol = sym_ordered_list;
  } else {
    rb_raise(rb_eNodeError, "could not get list_type");
  }

  return symbol;
}

#list_type=(list_type) ⇒ Object

Public: Sets the list type of the current node (must be a ‘:list`).

level - A Symbol representing the new list type

Raises a NodeError if the list type can’t be set.

# File 'ext/commonmarker/commonmarker.c', line 937

static VALUE rb_node_set_list_type(VALUE self, VALUE list_type) {
  int type = 0;
  cmark_node *node;
  Check_Type(list_type, T_SYMBOL);

  Data_Get_Struct(self, cmark_node, node);

  if (list_type == sym_bullet_list) {
    type = CMARK_BULLET_LIST;
  } else if (list_type == sym_ordered_list) {
    type = CMARK_ORDERED_LIST;
  } else {
    rb_raise(rb_eNodeError, "invalid list_type");
  }

  if (!cmark_node_set_list_type(node, type)) {
    rb_raise(rb_eNodeError, "could not set list_type");
  }

  return Qnil;
}

#next ⇒ Object

Public: Fetches the next sibling of the node.

Returns a CommonMarker::Node if a sibling exists, ‘nil` otherwise.

# File 'ext/commonmarker/commonmarker.c', line 517

static VALUE rb_node_next(VALUE self) {
  cmark_node *node, *next;
  Data_Get_Struct(self, cmark_node, node);

  next = cmark_node_next(node);

  return rb_node_to_value(next);
}

#parent ⇒ Object

Public: Fetches the parent of the current node.

Returns a CommonMarker::Node if a parent exists, ‘nil` otherise.

# File 'ext/commonmarker/commonmarker.c', line 759

static VALUE rb_node_parent(VALUE self) {
  cmark_node *node, *parent;
  Data_Get_Struct(self, cmark_node, node);

  parent = cmark_node_parent(node);

  return rb_node_to_value(parent);
}

#prepend_child(child) ⇒ Object

Public: Inserts a node as the first child of the current node.

child - A child CommonMarker::Node to insert.

Returns ‘true` if successful. Raises NodeError if the node can’t be inserted.

# File 'ext/commonmarker/commonmarker.c', line 704

static VALUE rb_node_prepend_child(VALUE self, VALUE child) {
  cmark_node *node1, *node2;
  Data_Get_Struct(self, cmark_node, node1);

  Data_Get_Struct(child, cmark_node, node2);

  if (!cmark_node_prepend_child(node1, node2)) {
    rb_raise(rb_eNodeError, "could not prepend child");
  }

  rb_parent_added(child);

  return Qtrue;
}

#previous ⇒ Object

Public: Fetches the previous sibling of the current node.

Returns a CommonMarker::Node if a parent exists, ‘nil` otherise.

# File 'ext/commonmarker/commonmarker.c', line 772

static VALUE rb_node_previous(VALUE self) {
  cmark_node *node, *previous;
  Data_Get_Struct(self, cmark_node, node);

  previous = cmark_node_previous(node);

  return rb_node_to_value(previous);
}

#sourcepos ⇒ Object

Public: Fetches the sourcepos of the node.

Returns a Hash containing Symbol keys of the positions.

# File 'ext/commonmarker/commonmarker.c', line 452

static VALUE rb_node_get_sourcepos(VALUE self) {
  int start_line, start_column, end_line, end_column;
  VALUE result;

  cmark_node *node;
  Data_Get_Struct(self, cmark_node, node);

  start_line = cmark_node_get_start_line(node);
  start_column = cmark_node_get_start_column(node);
  end_line = cmark_node_get_end_line(node);
  end_column = cmark_node_get_end_column(node);

  result = rb_hash_new();
  rb_hash_aset(result, CSTR2SYM("start_line"), INT2NUM(start_line));
  rb_hash_aset(result, CSTR2SYM("start_column"), INT2NUM(start_column));
  rb_hash_aset(result, CSTR2SYM("end_line"), INT2NUM(end_line));
  rb_hash_aset(result, CSTR2SYM("end_column"), INT2NUM(end_column));

  return result;
}

#string_content ⇒ Object

Public: Fetch the string contents of the node.

Returns a String.

# File 'ext/commonmarker/commonmarker.c', line 324

static VALUE rb_node_get_string_content(VALUE self) {
  const char *text;
  cmark_node *node;
  Data_Get_Struct(self, cmark_node, node);

  text = cmark_node_get_literal(node);
  if (text == NULL) {
    rb_raise(rb_eNodeError, "could not get string content");
  }

  return encode_utf8_string(text);
}

#string_content=(s) ⇒ Object

Public: Sets the string content of the node.

string - A String containing new content.

Raises NodeError if the string content can’t be set.

# File 'ext/commonmarker/commonmarker.c', line 344

static VALUE rb_node_set_string_content(VALUE self, VALUE s) {
  char *text;
  cmark_node *node;
  Check_Type(s, T_STRING);

  Data_Get_Struct(self, cmark_node, node);
  text = StringValueCStr(s);

  if (!cmark_node_set_literal(node, text)) {
    rb_raise(rb_eNodeError, "could not set string content");
  }

  return Qnil;
}

#table_alignments ⇒ Object

# File 'ext/commonmarker/commonmarker.c', line 1138

static VALUE rb_node_get_table_alignments(VALUE self) {
  uint16_t column_count, i;
  uint8_t *alignments;
  cmark_node *node;
  VALUE ary;
  Data_Get_Struct(self, cmark_node, node);

  column_count = cmark_gfm_extensions_get_table_columns(node);
  alignments = cmark_gfm_extensions_get_table_alignments(node);

  if (!column_count || !alignments) {
    rb_raise(rb_eNodeError, "could not get column_count or alignments");
  }

  ary = rb_ary_new();
  for (i = 0; i < column_count; ++i) {
    if (alignments[i] == 'l')
      rb_ary_push(ary, sym_left);
    else if (alignments[i] == 'c')
      rb_ary_push(ary, sym_center);
    else if (alignments[i] == 'r')
      rb_ary_push(ary, sym_right);
    else
      rb_ary_push(ary, Qnil);
  }
  return ary;
}

#tasklist_item_checked=(item_checked) ⇒ Object

Public: Sets the checkbox state of the current node (must be a ‘:tasklist`).

item_checked - A Boolean representing the new checkbox state

Returns a Boolean representing the new checkbox state. Raises a NodeError if the checkbox state can’t be set.

# File 'ext/commonmarker/commonmarker.c', line 1106

static VALUE rb_node_set_tasklist_item_checked(VALUE self, VALUE item_checked) {
  int tasklist_state;
  cmark_node *node;
  Data_Get_Struct(self, cmark_node, node);
  tasklist_state = RTEST(item_checked);

  if (!cmark_gfm_extensions_set_tasklist_item_checked(node, tasklist_state)) {
    rb_raise(rb_eNodeError, "could not set tasklist_item_checked");
  };

  if (tasklist_state) {
    return Qtrue;
  } else {
    return Qfalse;
  }
}

#tasklist_item_checked? ⇒ Boolean

Returns:

• (Boolean)

# File 'ext/commonmarker/commonmarker.c', line 1084

static VALUE rb_node_get_tasklist_item_checked(VALUE self) {
  int tasklist_state;
  cmark_node *node;
  Data_Get_Struct(self, cmark_node, node);

  tasklist_state = cmark_gfm_extensions_get_tasklist_item_checked(node);

  if (tasklist_state == 1) {
    return Qtrue;
  } else {
    return Qfalse;
  }
}

#tasklist_state ⇒ Object

TODO: remove this, superseded by the above method

# File 'ext/commonmarker/commonmarker.c', line 1124

static VALUE rb_node_get_tasklist_state(VALUE self) {
  int tasklist_state;
  cmark_node *node;
  Data_Get_Struct(self, cmark_node, node);

  tasklist_state = cmark_gfm_extensions_get_tasklist_item_checked(node);

  if (tasklist_state == 1) {
    return rb_str_new2("checked");
  } else {
    return rb_str_new2("unchecked");
  }
}

#title ⇒ Object

Public: Gets the title of the current node (must be a ‘:link` or `:image`).

Returns a String. Raises a NodeError if the title can’t be retrieved.

# File 'ext/commonmarker/commonmarker.c', line 828

static VALUE rb_node_get_title(VALUE self) {
  const char *text;
  cmark_node *node;
  Data_Get_Struct(self, cmark_node, node);

  text = cmark_node_get_title(node);
  if (text == NULL) {
    rb_raise(rb_eNodeError, "could not get title");
  }

  return rb_str_new2(text);
}

#title=(title) ⇒ Object

Public: Sets the title of the current node (must be a ‘:link` or `:image`).

title - A String representing the new title

Raises a NodeError if the title can’t be set.

# File 'ext/commonmarker/commonmarker.c', line 848

static VALUE rb_node_set_title(VALUE self, VALUE title) {
  char *text;
  cmark_node *node;
  Check_Type(title, T_STRING);

  Data_Get_Struct(self, cmark_node, node);
  text = StringValueCStr(title);

  if (!cmark_node_set_title(node, text)) {
    rb_raise(rb_eNodeError, "could not set title");
  }

  return Qnil;
}

#to_commonmark(options = :DEFAULT, width = 120) ⇒ Object

Public: Convert the node to a CommonMark string.

options - A Symbol or of Symbols indicating the render options width - Column to wrap the output at

Returns a String.

# File 'lib/commonmarker/node.rb', line 49

def to_commonmark(options = :DEFAULT, width = 120)
  opts = Config.process_options(options, :render)
  _render_commonmark(opts, width).force_encoding("utf-8")
end

#to_html(options = :DEFAULT, extensions = []) ⇒ Object

Public: Convert the node to an HTML string.

options - A Symbol or of Symbols indicating the render options extensions - An of Symbols indicating the extensions to use

Returns a String.

# File 'lib/commonmarker/node.rb', line 28

def to_html(options = :DEFAULT, extensions = [])
  opts = Config.process_options(options, :render)
  _render_html(opts, extensions).force_encoding("utf-8")
end

#to_plaintext(options = :DEFAULT, width = 120) ⇒ Object

Public: Convert the node to a plain text string.

options - A Symbol or of Symbols indicating the render options width - Column to wrap the output at

Returns a String.

# File 'lib/commonmarker/node.rb', line 60

def to_plaintext(options = :DEFAULT, width = 120)
  opts = Config.process_options(options, :render)
  _render_plaintext(opts, width).force_encoding("utf-8")
end

#to_xml(options = :DEFAULT) ⇒ Object

Public: Convert the node to an XML string.

options - A Symbol or of Symbols indicating the render options

Returns a String.

# File 'lib/commonmarker/node.rb', line 38

def to_xml(options = :DEFAULT)
  opts = Config.process_options(options, :render)
  _render_xml(opts).force_encoding("utf-8")
end

#type ⇒ Object

Public: Fetches the list type of the node.

Returns a Symbol representing the node’s type.

# File 'ext/commonmarker/commonmarker.c', line 364

static VALUE rb_node_get_type(VALUE self) {
  int node_type;
  cmark_node *node;
  VALUE symbol;
  const char *s;

  Data_Get_Struct(self, cmark_node, node);

  node_type = cmark_node_get_type(node);
  symbol = Qnil;

  switch (node_type) {
  case CMARK_NODE_DOCUMENT:
    symbol = sym_document;
    break;
  case CMARK_NODE_BLOCK_QUOTE:
    symbol = sym_blockquote;
    break;
  case CMARK_NODE_LIST:
    symbol = sym_list;
    break;
  case CMARK_NODE_ITEM:
    symbol = sym_list_item;
    break;
  case CMARK_NODE_CODE_BLOCK:
    symbol = sym_code_block;
    break;
  case CMARK_NODE_HTML:
    symbol = sym_html;
    break;
  case CMARK_NODE_PARAGRAPH:
    symbol = sym_paragraph;
    break;
  case CMARK_NODE_HEADER:
    symbol = sym_header;
    break;
  case CMARK_NODE_HRULE:
    symbol = sym_hrule;
    break;
  case CMARK_NODE_TEXT:
    symbol = sym_text;
    break;
  case CMARK_NODE_SOFTBREAK:
    symbol = sym_softbreak;
    break;
  case CMARK_NODE_LINEBREAK:
    symbol = sym_linebreak;
    break;
  case CMARK_NODE_CODE:
    symbol = sym_code;
    break;
  case CMARK_NODE_INLINE_HTML:
    symbol = sym_inline_html;
    break;
  case CMARK_NODE_EMPH:
    symbol = sym_emph;
    break;
  case CMARK_NODE_STRONG:
    symbol = sym_strong;
    break;
  case CMARK_NODE_LINK:
    symbol = sym_link;
    break;
  case CMARK_NODE_IMAGE:
    symbol = sym_image;
    break;
  case CMARK_NODE_FOOTNOTE_REFERENCE:
    symbol = sym_footnote_reference;
    break;
  case CMARK_NODE_FOOTNOTE_DEFINITION:
    symbol = sym_footnote_definition;
    break;
  default:
    if (node->extension) {
      s = node->extension->get_type_string_func(node->extension, node);
      return ID2SYM(rb_intern(s));
    }
    rb_raise(rb_eNodeError, "invalid node type %d", node_type);
  }

  return symbol;
}

#type_string ⇒ Object

Public: Returns the type of the current pointer as a string.

Returns a String.

# File 'ext/commonmarker/commonmarker.c', line 478

static VALUE rb_node_get_type_string(VALUE self) {
  cmark_node *node;
  Data_Get_Struct(self, cmark_node, node);

  return rb_str_new2(cmark_node_get_type_string(node));
}

#url ⇒ Object

Public: Gets the URL of the current node (must be a ‘:link` or `:image`).

Returns a String. Raises a NodeError if the URL can’t be retrieved.

# File 'ext/commonmarker/commonmarker.c', line 787

static VALUE rb_node_get_url(VALUE self) {
  const char *text;
  cmark_node *node;
  Data_Get_Struct(self, cmark_node, node);

  text = cmark_node_get_url(node);
  if (text == NULL) {
    rb_raise(rb_eNodeError, "could not get url");
  }

  return rb_str_new2(text);
}

#url=(url) ⇒ Object

Public: Sets the URL of the current node (must be a ‘:link` or `:image`).

url - A String representing the new URL

Raises a NodeError if the URL can’t be set.

# File 'ext/commonmarker/commonmarker.c', line 807

static VALUE rb_node_set_url(VALUE self, VALUE url) {
  cmark_node *node;
  char *text;
  Check_Type(url, T_STRING);

  Data_Get_Struct(self, cmark_node, node);
  text = StringValueCStr(url);

  if (!cmark_node_set_url(node, text)) {
    rb_raise(rb_eNodeError, "could not set url");
  }

  return Qnil;
}

#walk {|_self| ... } ⇒ Object

Public: An iterator that “walks the tree,” descending into children recursively.

blk - A Proc representing the action to take for each child

Yields:

• (_self)

Yield Parameters:

• _self (CommonMarker::Node) —

  the object that the method was called on

# File 'lib/commonmarker/node.rb', line 13

def walk(&block)
  return enum_for(:walk) unless block

  yield self
  each do |child|
    child.walk(&block)
  end
end