Add loc to each props in JSX4 (rescript-lang#5937)

Co-authored-by: Christoph Knittel <ck@cca.io>

Author: mununki

res_syntax/src/reactjs_jsx_v4.ml

@@ -242,9 +242,9 @@ let recordFromProps ~loc ~removeKey callArguments =
 (* let make = ({id, name, children}: props<'id, 'name, 'children>) *)
 let makePropsTypeParamsTvar namedTypeList =
  namedTypeList
- |> List.filter_map (fun (_isOptional, label, _, _interiorType) ->
+ |> List.filter_map (fun (_isOptional, label, _, loc, _interiorType) ->
  if label = "key" then None
- else Some (Typ.var @@ safeTypeFromValue (Labelled label)))
+ else Some (Typ.var ~loc @@ safeTypeFromValue (Labelled label)))
 
 let stripOption coreType =
  match coreType with
@@ -268,7 +268,7 @@ let stripJsNullable coreType =
 let makePropsTypeParams ?(stripExplicitOption = false)
  ?(stripExplicitJsNullableOfRef = false) namedTypeList =
  namedTypeList
- |> List.filter_map (fun (isOptional, label, _, interiorType) ->
+ |> List.filter_map (fun (isOptional, label, _, loc, interiorType) ->
  if label = "key" then None
  (* TODO: Worth thinking how about "ref_" or "_ref" usages *)
  else if label = "ref" then
@@ -277,7 +277,7 @@ let makePropsTypeParams ?(stripExplicitOption = false)
  For example, if JSX ppx is used for React Native, type would be different.
  *)
  match interiorType with
- | {ptyp_desc = Ptyp_var "ref"} -> Some (refType Location.none)
+ | {ptyp_desc = Ptyp_var "ref"} -> Some (refType loc)
  | _ ->
  (* Strip explicit Js.Nullable.t in case of forwardRef *)
  if stripExplicitJsNullableOfRef then stripJsNullable interiorType
@@ -287,9 +287,25 @@ let makePropsTypeParams ?(stripExplicitOption = false)
  else if isOptional && stripExplicitOption then stripOption interiorType
  else Some interiorType)
 
-let makeLabelDecls ~loc namedTypeList =
+let makeLabelDecls namedTypeList =
+ let rec checkDuplicatedLabel l =
+ let rec mem_label ((_, (la : string), _, _, _) as x) = function
+ | [] -> false
+ | (_, (lb : string), _, _, _) :: l -> lb = la || mem_label x l
+ in
+ match l with
+ | [] -> ()
+ | hd :: tl ->
+ if mem_label hd tl then
+ let _, label, _, loc, _ = hd in
+ React_jsx_common.raiseError ~loc "JSX: found the duplicated prop `%s`"
+ label
+ else checkDuplicatedLabel tl
+ in
+ let () = namedTypeList |> List.rev |> checkDuplicatedLabel in
+
  namedTypeList
- |> List.map (fun (isOptional, label, attrs, interiorType) ->
+ |> List.map (fun (isOptional, label, attrs, loc, interiorType) ->
  if label = "key" then
  Type.field ~loc ~attrs:(optionalAttrs @ attrs) {txt = label; loc}
  interiorType
@@ -301,7 +317,7 @@ let makeLabelDecls ~loc namedTypeList =
  (Typ.var @@ safeTypeFromValue @@ Labelled label))
 
 let makeTypeDecls propsName loc namedTypeList =
- let labelDeclList = makeLabelDecls ~loc namedTypeList in
+ let labelDeclList = makeLabelDecls namedTypeList in
  (* 'id, 'className, ... *)
  let params =
  makePropsTypeParamsTvar namedTypeList
@@ -702,17 +718,22 @@ let argToType ~newtypes ~(typeConstraints : core_type option) types
  in
  match (type_, name, default) with
  | Some type_, name, _ when isOptional name ->
- (true, getLabel name, attrs, {type_ with ptyp_attributes = optionalAttrs})
+ ( true,
+ getLabel name,
+ attrs,
+ loc,
+ {type_ with ptyp_attributes = optionalAttrs} )
  :: types
- | Some type_, name, _ -> (false, getLabel name, attrs, type_) :: types
+ | Some type_, name, _ -> (false, getLabel name, attrs, loc, type_) :: types
  | None, name, _ when isOptional name ->
  ( true,
  getLabel name,
  attrs,
+ loc,
  Typ.var ~loc ~attrs:optionalAttrs (safeTypeFromValue name) )
  :: types
  | None, name, _ when isLabelled name ->
- (false, getLabel name, attrs, Typ.var ~loc (safeTypeFromValue name))
+ (false, getLabel name, attrs, loc, Typ.var ~loc (safeTypeFromValue name))
  :: types
  | _ -> types
 
@@ -721,10 +742,12 @@ let argWithDefaultValue (name, default, _, _, _, _) =
  | Some default when isOptional name -> Some (getLabel name, default)
  | _ -> None
 
-let argToConcreteType types (name, attrs, _loc, type_) =
+let argToConcreteType types (name, attrs, loc, type_) =
  match name with
- | name when isLabelled name -> (false, getLabel name, attrs, type_) :: types
- | name when isOptional name -> (true, getLabel name, attrs, type_) :: types
+ | name when isLabelled name ->
+ (false, getLabel name, attrs, loc, type_) :: types
+ | name when isOptional name ->
+ (true, getLabel name, attrs, loc, type_) :: types
  | _ -> types
 
 let check_string_int_attribute_iter =
@@ -1306,7 +1329,8 @@ let transformSignatureItem ~config _mapper item =
  makePropsRecordTypeSig ~coreTypeOfAttr ~typVarsOfCoreType "props"
  psig_loc
  ((* If there is Nolabel arg, regard the type as ref in forwardRef *)
- (if !hasForwardRef then [(true, "ref", [], refType Location.none)]
+ (if !hasForwardRef then
+ [(true, "ref", [], Location.none, refType Location.none)]
  else [])
  @ namedTypeList)
  in

res_syntax/tests/ppx/react/expected/aliasProps.res.txt

@@ -1,10 +1,7 @@
 @@jsxConfig({version: 4, mode: "automatic"})
 
 module C0 = {
- type props<'priority, 'text> = {
- priority: 'priority,
- text?: 'text,
- }
+ type props<'priority, 'text> = {priority: 'priority, text?: 'text}
 
  @react.component
  let make = ({priority: _, ?text, _}: props<'priority, 'text>) => {
@@ -23,10 +20,7 @@ module C0 = {
 }
 
 module C1 = {
- type props<'priority, 'text> = {
- priority: 'priority,
- text?: 'text,
- }
+ type props<'priority, 'text> = {priority: 'priority, text?: 'text}
 
  @react.component
  let make = ({priority: p, ?text, _}: props<'priority, 'text>) => {

res_syntax/tests/ppx/react/expected/commentAtTop.res.txt

@@ -1,6 +1,4 @@
-type props<'msg> = { // test React JSX file
- msg: 'msg,
-}
+type props<'msg> = {msg: 'msg} // test React JSX file
 
 @react.component
 let make = ({msg, _}: props<'msg>) => {

res_syntax/tests/ppx/react/expected/externalWithCustomName.res.txt

@@ -13,10 +13,7 @@ let t = React.createElement(Foo.component, Foo.componentProps(~a=1, ~b={"1"}, ()
 @@jsxConfig({version: 4, mode: "classic"})
 
 module Foo = {
- type props<'a, 'b> = {
- a: 'a,
- b: 'b,
- }
+ type props<'a, 'b> = {a: 'a, b: 'b}
 
  @module("Foo")
  external component: React.componentLike<props<int, string>, React.element> = "component"
@@ -27,10 +24,7 @@ let t = React.createElement(Foo.component, {a: 1, b: "1"})
 @@jsxConfig({version: 4, mode: "automatic"})
 
 module Foo = {
- type props<'a, 'b> = {
- a: 'a,
- b: 'b,
- }
+ type props<'a, 'b> = {a: 'a, b: 'b}
 
  @module("Foo")
  external component: React.componentLike<props<int, string>, React.element> = "component"

res_syntax/tests/ppx/react/expected/fileLevelConfig.res.txt

@@ -18,9 +18,7 @@ module V3 = {
 @@jsxConfig({version: 4, mode: "classic"})
 
 module V4C = {
- type props<'msg> = {
- msg: 'msg,
- }
+ type props<'msg> = {msg: 'msg}
 
  @react.component
  let make = ({msg, _}: props<'msg>) => {
@@ -36,9 +34,7 @@ module V4C = {
 @@jsxConfig({version: 4, mode: "automatic"})
 
 module V4A = {
- type props<'msg> = {
- msg: 'msg,
- }
+ type props<'msg> = {msg: 'msg}
 
  @react.component
  let make = ({msg, _}: props<'msg>) => {

res_syntax/tests/ppx/react/expected/interface.res.txt

@@ -1,7 +1,5 @@
 module A = {
- type props<'x> = {
- x: 'x,
- }
+ type props<'x> = {x: 'x}
  @react.component let make = ({x, _}: props<'x>) => React.string(x)
  let make = {
  let \"Interface$A" = (props: props<_>) => make(props)

res_syntax/tests/ppx/react/expected/interface.resi.txt

@@ -1,7 +1,5 @@
 module A: {
- type props<'x> = {
- x: 'x,
- }
+ type props<'x> = {x: 'x}
  let make: React.componentLike<props<string>, React.element>
 }
 

res_syntax/tests/ppx/react/expected/interfaceWithRef.res.txt

@@ -1,7 +1,4 @@
-type props<'x, 'ref> = {
- x: 'x,
- ref?: 'ref,
-}
+type props<'x, 'ref> = {x: 'x, ref?: 'ref}
 @react.component
 let make = (
  {x, _}: props<string, ReactDOM.Ref.currentDomRef>,

res_syntax/tests/ppx/react/expected/interfaceWithRef.resi.txt

@@ -1,5 +1,2 @@
-type props<'x, 'ref> = {
- x: 'x,
- ref?: 'ref,
-}
+type props<'x, 'ref> = {x: 'x, ref?: 'ref}
 let make: React.componentLike<props<string, ReactDOM.Ref.currentDomRef>, React.element>

res_syntax/tests/ppx/react/expected/mangleKeyword.res.txt

@@ -20,10 +20,7 @@ let c31 = React.createElement(C31.make, C31.makeProps(~_open="x", ()))
 @@jsxConfig({version: 4, mode: "classic"})
 
 module C4C0 = {
- type props<'T_open, 'T_type> = {
- @as("open") _open: 'T_open,
- @as("type") _type: 'T_type,
- }
+ type props<'T_open, 'T_type> = {@as("open") _open: 'T_open, @as("type") _type: 'T_type}
 
  @react.component
  let make = ({@as("open") _open, @as("type") _type, _}: props<'T_open, string>) =>
@@ -35,10 +32,7 @@ module C4C0 = {
  }
 }
 module C4C1 = {
- type props<'T_open, 'T_type> = {
- @as("open") _open: 'T_open,
- @as("type") _type: 'T_type,
- }
+ type props<'T_open, 'T_type> = {@as("open") _open: 'T_open, @as("type") _type: 'T_type}
 
  external make: @as("open") React.componentLike<props<string, string>, React.element> = "default"
 }
@@ -49,10 +43,7 @@ let c4c1 = React.createElement(C4C1.make, {_open: "x", _type: "t"})
 @@jsxConfig({version: 4, mode: "automatic"})
 
 module C4A0 = {
- type props<'T_open, 'T_type> = {
- @as("open") _open: 'T_open,
- @as("type") _type: 'T_type,
- }
+ type props<'T_open, 'T_type> = {@as("open") _open: 'T_open, @as("type") _type: 'T_type}
 
  @react.component
  let make = ({@as("open") _open, @as("type") _type, _}: props<'T_open, string>) =>
@@ -64,10 +55,7 @@ module C4A0 = {
  }
 }
 module C4A1 = {
- type props<'T_open, 'T_type> = {
- @as("open") _open: 'T_open,
- @as("type") _type: 'T_type,
- }
+ type props<'T_open, 'T_type> = {@as("open") _open: 'T_open, @as("type") _type: 'T_type}
 
  external make: @as("open") React.componentLike<props<string, string>, React.element> = "default"
 }