Crate oxc_ast

Oxc AST (Abstract Syntax Tree) Nodes

Supports JavaScript, TypeScript and JSX.

Types

AST types are similar to estree and typescript-eslint’s definition, with a few notable exceptions:

• Identifier is replaced with explicit BindingIdentifier, IdentifierReference, IdentifierName, per ECMAScript Specification.
• AssignmentExpression.left Pattern is replaced with AssignmentTarget.
• Literal is replaced with BooleanLiteral, NumericLiteral, StringLiteral etc.

Field order of types follows “Evaluation order” defined by ECMAScript spec. For TypeScript types, we follow how field order is defined in tsc.

Oxc’s visitors (Visit, VisitMut, Traverse) visit AST node fields in same order as they are defined in the types here.

Parsing

You can obtain an AST by parsing source code with a Parser from oxc_parser.

Cargo Features

• "serde" enables support for serde serialization

Re-exports

• pub use crate::visit::Visit;
• pub use crate::visit::VisitMut;

Modules

• ast
  AST Definitions
• ast_builder
  AST node factories
• ast_kind
• precedence
  Expression precedence trait implementations.
• visit

Macros

• match_assignment_target
  Macro for matching AssignmentTarget’s variants. Includes SimpleAssignmentTarget’s and AssignmentTargetPattern’s variants.
• match_assignment_target_pattern
  Macro for matching AssignmentTargetPattern’s variants.
• match_declaration
  Macro for matching Declaration’s variants.
• match_expression
  Macro for matching Expression’s variants. Includes MemberExpression’s variants.
• match_member_expression
  Macro for matching MemberExpression’s variants.
• match_module_declaration
  Macro for matching ModuleDeclaration’s variants.
• match_simple_assignment_target
  Macro for matching SimpleAssignmentTarget’s variants. Includes MemberExpression’s variants
• match_ts_type
  Macro for matching TSType’s variants.
• match_ts_type_name
  Macro for matching TSTypeName’s variants.

Structs

• AstBuilder
  AST builder for creating AST nodes
• BigUint
  A big unsigned integer type.
• Comment
  A comment in source code.
• CommentsRange
  Double-ended iterator over a range of comments, by starting position.
• NONE
  Type that can be used in any AST builder method call which requires an IntoIn<'a, Anything<'a>>. Pass NONE instead of None::<Anything<'a>>.

Enums

• AstKind
  Untyped AST Node Kind
• AstType
• CommentKind
  Indicates a line or block comment.
• CommentPosition
  Information about a comment’s position relative to a token.

Functions

• comments_range
• has_comments_between