Syntax Objects

(def AST::t)

Base class for syntax objects. It is a struct type with two fields, content and location.

(make-AST e src) -> syntax-object

  e   := any
  src := location or #f

Creates a new syntax object.

(AST? obj) -> boolean

  obj := any object

Returns true if the object obj is a syntax object.

(AST-e ast) -> any

  ast := syntax object

Returns the content of a syntax object ast.

(AST-source ast) -> location | #f

  ast := syntax object

Returns the source location of a syntax object ast.

(read-syntax [port = (current-input-port)]) -> syntax object | eof

  port := input port

Reads the next syntax object from port.

(read-syntax-from-file path) -> list of syntax objects

  path := string

Reads the contents of a file pointed by path as syntax objects.

(source-location? obj) -> boolean

  obj := any object

Returns true if the object obj is a source location.

(source-location-path? obj) -> boolean

  obj := any object

Returns true if the object obj is a source location with a file path.

(source-location-path loc) -> string

  loc := source location with a path

Returns the source location path.

# Syntax Objects