Ast_iterator (parsing.Ast

iterator allows to implement AST inspection using open recursion. A typical mapper would be based on default_iterator, a trivial iterator, and will fall back on it for handling the syntax it does not modify.

type iterator = {

attribute : iterator -> Parsetree.attribute -> unit;

attributes : iterator -> Parsetree.attribute list -> unit;

case : iterator -> Parsetree.case -> unit;

cases : iterator -> Parsetree.case list -> unit;

class_declaration : iterator -> Parsetree.class_declaration -> unit;

class_description : iterator -> Parsetree.class_description -> unit;

class_expr : iterator -> Parsetree.class_expr -> unit;

class_field : iterator -> Parsetree.class_field -> unit;

class_signature : iterator -> Parsetree.class_signature -> unit;

class_structure : iterator -> Parsetree.class_structure -> unit;

class_type : iterator -> Parsetree.class_type -> unit;

class_type_declaration : iterator -> Parsetree.class_type_declaration -> unit;

class_type_field : iterator -> Parsetree.class_type_field -> unit;

constructor_declaration : iterator -> Parsetree.constructor_declaration -> unit;

expr : iterator -> Parsetree.expression -> unit;

extension : iterator -> Parsetree.extension -> unit;

extension_constructor : iterator -> Parsetree.extension_constructor -> unit;

include_declaration : iterator -> Parsetree.include_declaration -> unit;

include_description : iterator -> Parsetree.include_description -> unit;

label_declaration : iterator -> Parsetree.label_declaration -> unit;

location : iterator -> Location.t -> unit;

module_binding : iterator -> Parsetree.module_binding -> unit;

module_declaration : iterator -> Parsetree.module_declaration -> unit;

module_expr : iterator -> Parsetree.module_expr -> unit;

module_type : iterator -> Parsetree.module_type -> unit;

module_type_declaration : iterator -> Parsetree.module_type_declaration -> unit;

open_description : iterator -> Parsetree.open_description -> unit;

pat : iterator -> Parsetree.pattern -> unit;

payload : iterator -> Parsetree.payload -> unit;

signature : iterator -> Parsetree.signature -> unit;

signature_item : iterator -> Parsetree.signature_item -> unit;

structure : iterator -> Parsetree.structure -> unit;

structure_item : iterator -> Parsetree.structure_item -> unit;

typ : iterator -> Parsetree.core_type -> unit;

type_declaration : iterator -> Parsetree.type_declaration -> unit;

type_extension : iterator -> Parsetree.type_extension -> unit;

type_kind : iterator -> Parsetree.type_kind -> unit;

value_binding : iterator -> Parsetree.value_binding -> unit;

value_description : iterator -> Parsetree.value_description -> unit;

with_constraint : iterator -> Parsetree.with_constraint -> unit;

}

A iterator record implements one "method" per syntactic category, using an open recursion style: each method takes as its first argument the iterator to be applied to children in the syntax tree.

Module Ast_iterator

A generic Parsetree iterator