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open Ast
let parse_numeric_string s =
let upper = String.uppercase_ascii (String.trim s) in
match upper with
| "TRUE" | "T" -> Some 1.0
| "FALSE" | "F" -> Some 0.0
| _ ->
let s1 = Str.global_replace (Str.regexp_string "%") "" upper in
let s2 = Str.global_replace (Str.regexp_string " ") "" s1 in
let s3 = Str.global_replace (Str.regexp_string ",") "." s2 in
let s4 = Str.global_replace (Str.regexp_string ";") "." s3 in
try Some (float_of_string s4)
with Failure _ -> None
(*
--# Convert to Integer
--#
--# Coerces a value to an integer robustly. Handles strings with
--# spaces, percentages, commas, and recognizes 'TRUE'/'FALSE'.
--#
--# @name to_integer
--# @param x :: Any The value to convert.
--# @return :: Int | NA The converted integer.
--# @example
--# to_integer("12 300")
--# to_integer("TRUE")
--# to_integer(3.14)
--# @family core
--# @export
*)
let register_integer env =
Env.add "to_integer"
(make_builtin ~name:"to_integer" 1 (fun args _env ->
let convert v = match v with
| VInt i -> VInt i
| VFloat f -> VInt (int_of_float f)
| VBool b -> VInt (if b then 1 else 0)
| VString s ->
(match parse_numeric_string s with
| Some f -> VInt (int_of_float f)
| None -> (VNA NAGeneric))
| VNA _ -> (VNA NAGeneric)
| _ -> Error.type_error (Printf.sprintf "Cannot coerce %s to integer" (Utils.type_name v))
in
match args with
| [VVector arr] ->
let had_error = ref None in
let res = Array.map (fun v ->
let converted = convert v in
(match converted with VError _ as e -> had_error := Some e | _ -> ());
converted
) arr in
(match !had_error with Some e -> e | None -> VVector res)
| [VList items] ->
let had_error = ref None in
let res = List.map (fun (n, v) ->
let converted = convert v in
(match converted with VError _ as e -> had_error := Some e | _ -> ());
(n, converted)
) items in
(match !had_error with Some e -> e | None -> VList res)
| [v] -> convert v
| _ -> Error.arity_error_named "to_integer" 1 (List.length args)
))
env
(*
--# Convert to Float
--#
--# Coerces a value to a float robustly. Handles strings with
--# spaces, percentages, commas, and recognizes 'TRUE'/'FALSE'.
--#
--# @name to_float
--# @param x :: Any The value to convert.
--# @return :: Float | NA The converted float.
--# @example
--# to_float("3,14")
--# to_float("15%")
--# to_float(42)
--# @family core
--# @export
*)
let register_float env =
Env.add "to_float"
(make_builtin ~name:"to_float" 1 (fun args _env ->
let convert v = match v with
| VFloat f -> VFloat f
| VInt i -> VFloat (float_of_int i)
| VBool b -> VFloat (if b then 1.0 else 0.0)
| VString s ->
(match parse_numeric_string s with
| Some f -> VFloat f
| None -> (VNA NAGeneric))
| VNA _ -> (VNA NAGeneric)
| _ -> Error.type_error (Printf.sprintf "Cannot coerce %s to float" (Utils.type_name v))
in
match args with
| [VVector arr] ->
let had_error = ref None in
let res = Array.map (fun v ->
let converted = convert v in
(match converted with VError _ as e -> had_error := Some e | _ -> ());
converted
) arr in
(match !had_error with Some e -> e | None -> VVector res)
| [VList items] ->
let had_error = ref None in
let res = List.map (fun (n, v) ->
let converted = convert v in
(match converted with VError _ as e -> had_error := Some e | _ -> ());
(n, converted)
) items in
(match !had_error with Some e -> e | None -> VList res)
| [v] -> convert v
| _ -> Error.arity_error_named "to_float" 1 (List.length args)
))
env
(*
--# Convert to Numeric
--#
--# Alias for `to_float`. Coerces a value to a numeric (float) robustly.
--#
--# @name to_numeric
--# @param x :: Any The value to convert.
--# @return :: Float | NA The converted float.
--# @family core
--# @export
*)
let register_numeric env =
Env.add "to_numeric"
(make_builtin ~name:"to_numeric" 1 (fun args _env ->
let convert v = match v with
| VFloat f -> VFloat f
| VInt i -> VFloat (float_of_int i)
| VBool b -> VFloat (if b then 1.0 else 0.0)
| VString s ->
(match parse_numeric_string s with
| Some f -> VFloat f
| None -> (VNA NAGeneric))
| VNA _ -> (VNA NAGeneric)
| _ -> Error.type_error (Printf.sprintf "Cannot coerce %s to numeric" (Utils.type_name v))
in
match args with
| [VVector arr] ->
let had_error = ref None in
let res = Array.map (fun v ->
let converted = convert v in
(match converted with VError _ as e -> had_error := Some e | _ -> ());
converted
) arr in
(match !had_error with Some e -> e | None -> VVector res)
| [VList items] ->
let had_error = ref None in
let res = List.map (fun (n, v) ->
let converted = convert v in
(match converted with VError _ as e -> had_error := Some e | _ -> ());
(n, converted)
) items in
(match !had_error with Some e -> e | None -> VList res)
| [v] -> convert v
| _ -> Error.arity_error_named "to_numeric" 1 (List.length args)
))
env
(*
--# Convert a string to a Symbol
--#
--# Creates a Symbol from a string so it can be injected into quoted code with
--# `!!`. Existing Symbol values pass through unchanged.
--#
--# @name sym
--# @param x :: String | Symbol The name to convert.
--# @return :: Symbol The resulting symbol.
--# @example
--# sym("mpg")
--# expr(select(df, !!sym("mpg")))
--# @family core
--# @export
*)
let register_sym env =
Env.add "sym"
(make_builtin ~name:"sym" 1 (fun args _env ->
match args with
| [VString name] ->
let trimmed = String.trim name in
if trimmed = "" then
Error.value_error "Function `sym` expects a non-empty String or Symbol."
else
VSymbol trimmed
| [VSymbol name] -> VSymbol name
| [_] -> Error.type_error "Function `sym` expects a String or Symbol."
| _ -> Error.arity_error_named "sym" 1 (List.length args)
))
env
let register env =
env |> register_integer |> register_float |> register_numeric |> register_sym