Crate yggdrasil_rt

Yggdrasil Runtime

Shared runtime for yggdrasil grammar generator.

Language Server Support

Regex Support

Re-exports

• pub use crate::errors::InvalidTag;
• pub use crate::errors::YggdrasilError;

Modules

• errors
• input
  Provides trait constraints for parsing streaming input structures
• state
  Handle state transitions of parsed streams

Structs

• Lines
  Line iterator for Spans, created by Span::lines().
• LinesSpan
  Line iterator for Spans, created by Span::lines_span().
• Position
  A cursor position in a &str which provides useful methods to manually parse that string.
• Regex
  A regex matcher that works by composing several other regex matchers automatically.
• RegexCompiled
  A precompiled regular expression state machine
• Stack
  Implementation of a Stack which maintains popped elements and length of previous states in order to rewind the stack to a previous state.
• State
  The complete state of a Parser.
• TextSpan
  A span over a &str. It is created from either two Positions or from a Pair.
• TokenPair
  A matching pair of Tokens and everything between them.
• TokenStream
  An iterator over Pairs. It is created by Pairs::flatten.
• TokenTree
  An iterator over Pairs. It is created by yggdrasil_rt::state and Pair::into_inner.
• TokenTreeFilterRule
  find tags in toke pair
• TokenTreeFilterTag
  find tags in toke pair
• Tokens
  An iterator over Tokens. It is created by Pair::tokens and Pairs::tokens.

Enums

• Lookahead
  The current lookahead status of a ParserState.
• MatchDirection
  Match direction for the stack. Used in PEEK[a..b]/stack_match_peek_slice.
• Token
  A token generated by a Parser.
• TokenQueue
  This structure serves to improve performance over Token objects in two ways:

Traits

• YggdrasilNode
  A typed ast node
• YggdrasilParser
  A trait with a single method that parses strings.
• YggdrasilRule
  Define rules subject to Yggdrasil

Functions

• merge_spans
  Merges two spans into one.
• state
  Creates a ParserState from a &str, supplying it to a closure f.

Type Aliases

• AhoCorasick
• Either
  Type alias to simplify specifying the return value of chained closures.
• OutputResult
  Output result alias