Crate yaml_rt_core 

Core types for a YAML 1.2.2 round-trip parser.

This crate is intentionally dependency-free. It owns source storage, the lossless lexer and CST, semantic metadata, diagnostics, JSON Pointer operations, typed-overlay traits, editor APIs, and patch-based emission. The original source and CST remain authoritative so untouched YAML is emitted byte-for-byte.

Structs

Children

Iterator over a node’s children in source order.

Diagnostic

Structured user-facing diagnostic.

Edit

Pending source edit used by the patch-based emitter.

FragmentError

Failure to parse, validate, or render a YAML fragment.

JsonPointer

A parsed plain RFC 6901 JSON Pointer.

LineCol

One-based line and column location.

Node

Lossless syntax node produced by the CST parser.

NodeId

Identifier for a node stored inside a crate::YamlDoc.

PointerError

Structured JSON Pointer parse or resolution error.

ReferenceToken

One decoded RFC 6901 reference token.

ReservedDirective

Parsed reserved directive metadata.

ScalarResolveError

Failure to resolve a scalar according to the YAML core schema.

SemanticValueError

Failure while projecting YAML nodes into the JSON-compatible data model.

Source

Original YAML input plus line-start metadata.

Span

A byte span inside a Source.

TagDirective

Parsed %TAG directive metadata.

Token

Lexical token preserving its exact source span.

YamlDirective

Parsed %YAML directive metadata.

YamlDoc

A source-preserving YAML document.

YamlEditError

Failure while applying a pointer-addressed YAML edit.

YamlError

Error type for YAML parsing, semantic lookup, typed overlays, and emission.

YamlEvent

Semantic YAML event produced by the parser.

YamlEvents

On-demand iterator over semantic YAML events.

YamlFragment

A parsed YAML value document containing exactly one root node.

YamlNumber

An exact, finite YAML number normalized for semantic comparison.

YamlPatch

A parsed sequence of RFC 6902-style operations over YAML values.

YamlPatchError

Failure while parsing or applying a YAML patch.

Enums

CollectionStyle

YAML collection spelling.

DiagnosticKind

Diagnostic phase.

MappingEntryStyle

Formatting controls for inserting a block mapping entry.

NodeKind

Node kinds emitted by the CST parser.

NonFiniteFloat

A non-finite YAML float, which is outside the JSON-compatible data model.

PointerErrorKind

Classification of a JSON Pointer parse or resolution failure.

ResolvedScalar

YAML 1.2 core-schema interpretation of a scalar.

SemanticKind

Semantic interpretation attached to a lossless CST node.

TokenKind

Token kinds emitted by the lossless lexer.

YamlEventKind

Semantic YAML event kinds.

YamlPatchErrorKind

Classification of a YAML patch failure.

YamlPatchOperation

One YAML patch operation.

YamlScalarStyle

YAML scalar spelling.

Constants

TARGET_YAML_VERSION

YAML version targeted by this workspace.

Traits

FromYamlDoc

Converts a YAML document into a typed overlay.

ToYamlDoc

Applies a typed overlay back to a YAML document as minimal patches.

ToYamlFragment

Formats a typed value as a YAML fragment for parent-aware insertions.

YamlFlatten

Reads and writes a field flattened into its containing YAML mapping.

YamlValue

Reads and writes individual YAML node values.

Functions

events_to_test_string

Renders YAML events in the YAML Test Suite test.event format.

lex

Lexes YAML source into lossless tokens.

parse_cst

Parses a source buffer into a lossless CST node arena.

resolve_scalar

Resolves a decoded scalar value using the YAML 1.2 core schema.

semantically_equal

Compares two YAML nodes using RFC 6902 JSON-value equality.

tokens_to_string

Reconstructs source text from token spans.

Type Aliases

ParseError

Alias for parse errors until richer phase-specific errors are introduced.