module markdown

#flag -I @VMODROOT/thirdparty/md4c
#flag @VMODROOT/thirdparty/md4c-lib.c
#include "md4c.h"
#include "md4c-html.h"

type BlockFn = fn (t MD_BLOCKTYPE, d voidptr, u voidptr) int

type SpanFn = fn (t MD_SPANTYPE, d voidptr, u voidptr) int

type TextFn = fn (t MD_TEXTTYPE, tx &char, s u32, u voidptr) int

type DebugFn = fn (m &char, u voidptr)

@[typedef]
pub enum MD_BLOCKTYPE {
	md_block_doc = 0
	md_block_quote
	md_block_ul
	md_block_ol
	md_block_li
	md_block_hr
	md_block_h
	md_block_code
	md_block_html
	md_block_p
	md_block_table
	md_block_thead
	md_block_tbody
	md_block_tr
	md_block_th
	md_block_td
}

@[typedef]
pub enum MD_TEXTTYPE {
	md_text_normal = 0
	md_text_null_char
	md_text_br
	md_text_softbr
	md_text_entity
	md_text_code
	md_text_html
	md_text_latexmath
}

@[typedef]
pub enum MD_SPANTYPE {
	md_span_em
	md_span_strong
	md_span_a
	md_span_img
	md_span_code
	md_span_del
	md_span_latexmath
	md_span_latexmath_display
	md_span_wikilink
	md_span_u
}

@[typedef]
pub enum MD_ALIGN {
	md_align_default = 0
	md_align_left
	md_align_center
	md_align_right
}

@[typedef]
pub struct C.MD_PARSER {
pub:
	abi_version u32
	flags       u32
	enter_block BlockFn
	leave_block BlockFn
	enter_span  SpanFn
	leave_span  SpanFn
	text        TextFn
	debug_log   DebugFn
}

@[typedef]
pub struct C.MD_ATTRIBUTE {
pub:
	text           &char
	size           u32
	substr_types   &MD_TEXTTYPE
	substr_offsets &u32
}

@[typedef]
pub struct C.MD_BLOCK_UL_DETAIL {
pub:
	is_tight int
	mark     u8
}

@[typedef]
pub struct C.MD_BLOCK_OL_DETAIL {
pub:
	start          u32
	is_tight       int
	mark_delimiter u8
}

@[typedef]
pub struct C.MD_BLOCK_LI_DETAIL {
pub:
	is_task          bool
	task_mark        u8
	task_mark_offset u32
}

@[typedef]
pub struct C.MD_BLOCK_H_DETAIL {
pub:
	level u32
}

@[typedef]
pub struct C.MD_BLOCK_CODE_DETAIL {
pub:
	info       C.MD_ATTRIBUTE
	lang       C.MD_ATTRIBUTE
	fence_char u8
}

@[typedef]
pub struct C.MD_BLOCK_TD_DETAIL {
pub:
	align MD_ALIGN
}

@[typedef]
pub struct C.MD_SPAN_A_DETAIL {
pub:
	href  C.MD_ATTRIBUTE
	title C.MD_ATTRIBUTE
}

@[typedef]
pub struct C.MD_SPAN_IMG_DETAIL {
pub:
	src   C.MD_ATTRIBUTE
	title C.MD_ATTRIBUTE
}

@[typedef]
pub struct C.MD_SPAN_WIKILINK_DETAIL {
pub:
	target C.MD_ATTRIBUTE
}

fn C.md_parse(text &char, size u32, parser &C.MD_PARSER, userdata voidptr) int

pub fn new(parser_flags u32, enter_block_cb BlockFn, leave_block_cb BlockFn, enter_span_cb SpanFn, leave_span_cb SpanFn, text_cb TextFn, debug_cb DebugFn) C.MD_PARSER {
	return C.MD_PARSER{
		abi_version: 0
		flags:       parser_flags
		enter_block: enter_block_cb
		leave_block: leave_block_cb
		enter_span:  enter_span_cb
		leave_span:  leave_span_cb
		text:        text_cb
		debug_log:   debug_cb
	}
}

fn parse(text &char, size u32, parser &C.MD_PARSER, userdata voidptr) int {
	return C.md_parse(text, size, parser, userdata)
}