# _protocols URL: /api/parser/_protocols/ Section: parser -------------------------------------------------------------------------------- _protocols - Kida window.BENGAL_THEME_DEFAULTS = { appearance: 'light', palette: 'brown-bengal' }; window.Bengal = window.Bengal || {}; window.Bengal.enhanceBaseUrl = '/kida/assets/js/enhancements'; window.Bengal.watchDom = true; window.Bengal.debug = false; window.Bengal.enhanceUrls = { 'toc': '/kida/assets/js/enhancements/toc.632a9783.js', 'docs-nav': '/kida/assets/js/enhancements/docs-nav.57e4b129.js', 'tabs': '/kida/assets/js/enhancements/tabs.aac9e817.js', 'lightbox': '/kida/assets/js/enhancements/lightbox.1ca22aa1.js', 'interactive': '/kida/assets/js/enhancements/interactive.fc077855.js', 'mobile-nav': '/kida/assets/js/enhancements/mobile-nav.d991657f.js', 'action-bar': '/kida/assets/js/enhancements/action-bar.d62417f4.js', 'copy-link': '/kida/assets/js/enhancements/copy-link.7d9a5c29.js', 'data-table': '/kida/assets/js/enhancements/data-table.1f5bc1eb.js', 'lazy-loaders': '/kida/assets/js/enhancements/lazy-loaders.a5c38245.js', 'holo': '/kida/assets/js/enhancements/holo.ee13c841.js', 'link-previews': '/kida/assets/js/enhancements/link-previews.8d906535.js' }; (function () { try { var defaults = window.BENGAL_THEME_DEFAULTS || { appearance: 'system', palette: '' }; var defaultAppearance = defaults.appearance; if (defaultAppearance === 'system') { defaultAppearance = (window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches) ? 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(storedTheme === 'system' ? defaultAppearance : storedTheme) : defaultAppearance; var palette = storedPalette ?? defaults.palette; document.documentElement.setAttribute('data-theme', theme); if (palette) { document.documentElement.setAttribute('data-palette', palette); } } catch (e) { document.documentElement.setAttribute('data-theme', 'light'); } })(); { "prerender": [ { "where": { "and": [ { "href_matches": "/docs/*" }, { "not": { "selector_matches": "[data-external], [target=_blank], .external" } } ] }, "eagerness": "conservative" } ], "prefetch": [ { "where": { "and": [ { "href_matches": "/*" }, { "not": { "selector_matches": "[data-external], [target=_blank], .external" } } ] }, "eagerness": "conservative" } ] } Skip to main content Magnifying Glass ESC Recent Clear Magnifying Glass No results for "" Start typing to search... ↑↓ Navigate ↵ Open ESC Close Powered by Lunr )彡 DocumentationInfoAboutArrow ClockwiseGet StartedCodeSyntaxTerminalUsageNoteTutorialsStarburstExtendingBookmarkReferenceTroubleshootingReleasesDevGitHubKida API Reference Magnifying Glass Search ⌘K Palette Appearance Chevron Down Mode Monitor System Sun Light Moon Dark Palette Snow Lynx Brown Bengal Silver Bengal Charcoal Bengal Blue Bengal List )彡 Magnifying Glass Search X Close Documentation Caret Down Info About Arrow Clockwise Get Started Code Syntax Terminal Usage Note Tutorials Starburst Extending Bookmark Reference Troubleshooting Releases Dev Caret Down GitHub Kida API Reference Palette Appearance Chevron Down Mode Monitor System Sun Light Moon Dark Palette Snow Lynx Brown Bengal Silver Bengal Charcoal Bengal Blue Bengal Kida API Reference Caret Right Analysis analyzer cache config dependencies landmarks metadata purity roles Caret Right Compiler Caret Right Statements basic control_flow functions special_blocks template_structure variables _protocols coalescing core expressions utils Caret Right Environment core exceptions filters loaders protocols registry tests Caret Right Parser Caret Right Blocks control_flow core functions special_blocks template_structure variables _protocols core errors expressions statements tokens Caret Right Utils html lru_cache workers _types bytecode_cache kida lexer nodes template tstring Kida API ReferenceParser ᗢ Caret Down Link Copy URL External Open LLM text Copy Copy LLM text Share with AI Ask Claude Ask ChatGPT Ask Gemini Ask Copilot Module parser._protocols Type protocols for parser mixin pattern. Provides ParserCoreProtocol — a minimal protocol containing only host attributes and frequently-used cross-mixin methods. Individual mixins declare their own requirements via TYPE_CHECKING blocks. This hybrid approach: Reduces protocol maintenance from ~75 signatures to ~16 Makes mixins self-documenting (inline declarations show dependencies) Enables IDE autocomplete and compile-time safety Has zero runtime cost (protocols erased at runtime) See: plan/rfc-mixin-protocol-typing.md 1Class Classes ParserCoreProtocol 14 ▼ Minimal contract for cross-mixin dependencies. Contains ONLY: 1. Host class attributes (defined in… Minimal contract for cross-mixin dependencies. Contains ONLY: Host class attributes (defined in Parser.init) Token navigation methods (used by all parsing mixins) Error handling (used everywhere) Individual mixin methods are NOT included—mixins declare their own cross-mixin dependencies via inline TYPE_CHECKING declarations. This protocol is satisfied by the Parser class through structural typing. Attributes Name Type Description _tokens Sequence[Token] — _pos int — _name str | None — _filename str | None — _source str | None — _autoescape bool — _block_stack list[tuple[str, int, int]] — Methods Internal Methods 7 ▼ _current 0 Token ▼ Get current token. property def _current(self) -> Token Returns Token _peek 1 Token ▼ Peek at token at offset from current position. def _peek(self, offset: int = 0) -> Token Parameters Name Type Description offset — Default: 0 Returns Token _advance 0 Token ▼ Advance to next token and return current. def _advance(self) -> Token Returns Token _expect 1 Token ▼ Expect current token to be of given type. def _expect(self, token_type: TokenType) -> Token Parameters Name Type Description token_type — Returns Token _match 0 bool ▼ Check if current token matches any of the types. def _match(self, *types: TokenType) -> bool Returns bool _error 3 ParseError ▼ Create a ParseError with source context and block stack info. def _error(self, message: str, token: Token | None = None, suggestion: str | None = None) -> ParseError Parameters Name Type Description message — token — Default: None suggestion — Default: None Returns ParseError _format_open_blocks 0 str ▼ Format the current block stack for error messages. def _format_open_blocks(self) -> str Returns str Next → core List © 2026 Kida built in ᓚᘏᗢ { "linkPreviews": { "enabled": true, "hoverDelay": 200, "hideDelay": 150, "showSection": true, "showReadingTime": true, "showWordCount": true, "showDate": true, "showTags": true, "maxTags": 3, "includeSelectors": [".prose"], "excludeSelectors": ["nav", ".toc", ".breadcrumb", ".pagination", ".card", "[class*='-card']", ".tab-nav", "[class*='-widget']", ".child-items", ".content-tiles"], "allowedHosts": [], "allowedSchemes": ["https"], "hostFailureThreshold": 3 } } window.BENGAL_LAZY_ASSETS = { tabulator: '/kida/assets/js/tabulator.min.js', dataTable: '/kida/assets/js/data-table.js', mermaidToolbar: '/kida/assets/js/mermaid-toolbar.9de5abba.js', mermaidTheme: '/kida/assets/js/mermaid-theme.344822c5.js', graphMinimap: '/kida/assets/js/graph-minimap.ff04e939.js', graphContextual: '/kida/assets/js/graph-contextual.355458ba.js' }; window.BENGAL_ICONS = { close: '/kida/assets/icons/close.911d4fe1.svg', enlarge: '/kida/assets/icons/enlarge.652035e5.svg', copy: '/kida/assets/icons/copy.3d56e945.svg', 'download-svg': '/kida/assets/icons/download.04f07e1b.svg', 'download-png': '/kida/assets/icons/image.c34dfd40.svg', 'zoom-in': '/kida/assets/icons/zoom-in.237b4a83.svg', 'zoom-out': '/kida/assets/icons/zoom-out.38857c77.svg', reset: '/kida/assets/icons/reset.d26dba29.svg' }; Arrow Up -------------------------------------------------------------------------------- Metadata: - Word Count: 840 - Reading Time: 4 minutes