plusparse/plusparse library
plusparse — a fast, hand-written Markdown + LaTeX parser, fully rewritten in pure Dart and built into gpt_markdown (originally a Rust flutter_rust_bridge plugin).
Single-pass, regex-free, and error-tolerant: it never throws on malformed or partial (streaming) input, which makes it suitable for re-parsing streaming LLM output on every token. No initialisation or native library loading is needed — parsing is synchronous pure Dart.
Usage:
final MdDocument doc = Plusparse.parse('# Hello **world**');
Classes
- FencedBlockSyntax
-
A convenient opaque container such as
:::warning...:::. Its body is raw text, including blank lines. An unfinished block consumes the remaining input with MdCustomBlock.closed false. It does not nest the same fence. - MarkdownBlockMatch
- A successful match consumes endLine exclusively. Parsers must be pure, deterministic, and accept incomplete input. A match may inspect only its consumed lines; otherwise independently cached blocks would be unsafe.
- MarkdownBlockRegistry
- Compiled first-character dispatch shared by segmentation and parsing. Invalid consumption is rejected rather than looping or dropping input.
- MarkdownBlockSyntax
-
A locally parsable custom block. Register a matching renderer with
MarkdownBlockComponentonGptMarkdown.blockComponents. - MarkdownDefinitions
- The link and footnote definitions of one document.
- MarkdownSegmentCache
- Retains settled segment strings between appends. Only the previous tail and appended source are split again. Edits or CR normalization fall back to a full split. Callers still compare source prefixes; this is not O(1).
- MdAlert
-
The alert a MdBlockQuote carries. Not an MdNode: it rides on the quote,
so the node hierarchy — and every exhaustive
switchover it — is unchanged. - MdBlockLatex
- MdBlockQuote
- MdBold
- MdCheckbox
- MdCodeBlock
- MdCustomBlock
- An extension's parsed payload. body remains raw unless the extension explicitly parses it; data should be immutable and independent of Flutter.
- MdDocument
- Root of a parsed document.
- MdFootnote
-
One footnote definition,
[^label]: text. - MdFootnoteDefinitions
- A run of consecutive footnote definitions, rendered where they were written — in a model's reply, that is the end.
- MdFootnoteReference
-
A footnote reference such as
[^1]or[^note], resolved against the document's footnote definitions. An unresolved[^x]stays text. - MdHeading
- MdHorizontalRule
- MdImage
- MdInlineCode
-
Backtick span (
code), rendered as highlighted inline code. - MdInlineLatex
- MdItalic
- MdLineBreak
- MdLink
- MdLinkDefinition
- Where a link reference definition points.
- MdListItem
- One item of an ordered/unordered list. children holds the item's inline content followed by any nested block nodes (e.g. a nested list).
- MdNode
- A node in the Markdown tree.
- MdOrderedList
- MdParagraph
- MdRadio
- MdSourceTag
-
A citation marker such as
[1]. - MdStrike
- MdTable
- MdTableCell
- One cell of a table row; holds inline content.
- MdTableRow
- One row of a table.
- MdText
- MdUnderline
- MdUnorderedList
- Plusparse
- Public entry point for the plusparse Markdown parser.
Enums
- MarkdownAlertType
- The kind of an alert, from the marker on the first line of a quote:
- MdAlign
-
Column alignment for tables (from the
:---:separator row).
Functions
-
splitStreamSegments(
String src, {MarkdownBlockRegistry? blockRegistry}) → List< String>