package ppxlib
Install
Dune Dependency
Authors
Maintainers
Sources
sha256=c8ea8c8770414fdba6612e7f2d814b21a493daa974ea862a90c8e6c766e5dd79
sha512=edc468e9111cc26e31825e475fd72f55123a22fe86548e07e7d111796fecb8d60359b1b53c7eac383e5e2114cbae74dfd9c166f330e84cbeab4ddfd5797e322f
doc/ppxlib/Ppxlib/Extension/index.html
Module Ppxlib.ExtensionSource
Declare extenders to rewrite extension nodes.
Type of declared extensions.
val declare :
string ->
'context Context.t ->
(Astlib.Ast_500.Parsetree.payload, 'a, 'context) Ast_pattern.t ->
(loc:Location.t -> path:string -> 'a) ->
tdeclare name context pattern expander declares the extension names name for context.
expander is responsible for producing the code to replace the extension in the AST. It receives as argument:
loc: the location of the enclosing node. For instance for expression it is thepexp_locfieldpath: the current module path
val declare_with_path_arg :
string ->
'context Context.t ->
(Astlib.Ast_500.Parsetree.payload, 'a, 'context) Ast_pattern.t ->
(loc:Location.t ->
path:string ->
arg:Longident.t Ppxlib_ast.Asttypes.loc option ->
'a) ->
tSame as declare except that the extension name takes an additional path argument. The path is the part of the name that start with a capitalized component. For instance in the following, the extension "map" would receive the path argument Foo.Bar:
let%map.Foo.Bar x = 1 in
...val declare_inline :
string ->
'context Context.t ->
(Astlib.Ast_500.Parsetree.payload, 'a, 'context list) Ast_pattern.t ->
(loc:Location.t -> path:string -> 'a) ->
tInline the result of the expansion into its parent. Only works for these contexts:
class_fieldclass_type_fieldsignature_itemstructure_item
val declare_inline_with_path_arg :
string ->
'context Context.t ->
(Astlib.Ast_500.Parsetree.payload, 'a, 'context list) Ast_pattern.t ->
(loc:Location.t ->
path:string ->
arg:Longident.t Ppxlib_ast.Asttypes.loc option ->
'a) ->
tThis module is used to implement Context_free.map_top_down
Given a context and a list of extension expander, returns all the ones that are for this context.
This module allows to declare extensions that do not produce a value of the context type. This is typically useful for extensions point that depends on more things from the context than the path and location.