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build/dev/javascript/gleam_json/gleam/json.mjs

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+import * as $bit_array from "../../gleam_stdlib/gleam/bit_array.mjs";
+import * as $dict from "../../gleam_stdlib/gleam/dict.mjs";
+import * as $dynamic from "../../gleam_stdlib/gleam/dynamic.mjs";
+import * as $decode from "../../gleam_stdlib/gleam/dynamic/decode.mjs";
+import * as $list from "../../gleam_stdlib/gleam/list.mjs";
+import * as $option from "../../gleam_stdlib/gleam/option.mjs";
+import { None, Some } from "../../gleam_stdlib/gleam/option.mjs";
+import * as $result from "../../gleam_stdlib/gleam/result.mjs";
+import * as $string_tree from "../../gleam_stdlib/gleam/string_tree.mjs";
+import { Ok, Error, toList, prepend as listPrepend, CustomType as $CustomType } from "../gleam.mjs";
+import {
+  decode as decode_string,
+  json_to_string as do_to_string,
+  json_to_string as to_string_tree,
+  identity as do_string,
+  identity as do_bool,
+  identity as do_int,
+  identity as do_float,
+  do_null,
+  object as do_object,
+  array as do_preprocessed_array,
+} from "../gleam_json_ffi.mjs";
+
+export { to_string_tree };
+
+export class UnexpectedEndOfInput extends $CustomType {}
+export const DecodeError$UnexpectedEndOfInput = () =>
+  new UnexpectedEndOfInput();
+export const DecodeError$isUnexpectedEndOfInput = (value) =>
+  value instanceof UnexpectedEndOfInput;
+
+export class UnexpectedByte extends $CustomType {
+  constructor($0) {
+    super();
+    this[0] = $0;
+  }
+}
+export const DecodeError$UnexpectedByte = ($0) => new UnexpectedByte($0);
+export const DecodeError$isUnexpectedByte = (value) =>
+  value instanceof UnexpectedByte;
+export const DecodeError$UnexpectedByte$0 = (value) => value[0];
+
+export class UnexpectedSequence extends $CustomType {
+  constructor($0) {
+    super();
+    this[0] = $0;
+  }
+}
+export const DecodeError$UnexpectedSequence = ($0) =>
+  new UnexpectedSequence($0);
+export const DecodeError$isUnexpectedSequence = (value) =>
+  value instanceof UnexpectedSequence;
+export const DecodeError$UnexpectedSequence$0 = (value) => value[0];
+
+export class UnableToDecode extends $CustomType {
+  constructor($0) {
+    super();
+    this[0] = $0;
+  }
+}
+export const DecodeError$UnableToDecode = ($0) => new UnableToDecode($0);
+export const DecodeError$isUnableToDecode = (value) =>
+  value instanceof UnableToDecode;
+export const DecodeError$UnableToDecode$0 = (value) => value[0];
+
+function do_parse(json, decoder) {
+  return $result.try$(
+    decode_string(json),
+    (dynamic_value) => {
+      let _pipe = $decode.run(dynamic_value, decoder);
+      return $result.map_error(
+        _pipe,
+        (var0) => { return new UnableToDecode(var0); },
+      );
+    },
+  );
+}
+
+/**
+ * Decode a JSON string into dynamically typed data which can be decoded into
+ * typed data with the `gleam/dynamic` module.
+ *
+ * ## Examples
+ *
+ * ```gleam
+ * > parse("[1,2,3]", decode.list(of: decode.int))
+ * Ok([1, 2, 3])
+ * ```
+ *
+ * ```gleam
+ * > parse("[", decode.list(of: decode.int))
+ * Error(UnexpectedEndOfInput)
+ * ```
+ *
+ * ```gleam
+ * > parse("1", decode.string)
+ * Error(UnableToDecode([decode.DecodeError("String", "Int", [])]))
+ * ```
+ */
+export function parse(json, decoder) {
+  return do_parse(json, decoder);
+}
+
+function decode_to_dynamic(json) {
+  let $ = $bit_array.to_string(json);
+  if ($ instanceof Ok) {
+    let string$1 = $[0];
+    return decode_string(string$1);
+  } else {
+    return new Error(new UnexpectedByte(""));
+  }
+}
+
+/**
+ * Decode a JSON bit string into dynamically typed data which can be decoded
+ * into typed data with the `gleam/dynamic` module.
+ *
+ * ## Examples
+ *
+ * ```gleam
+ * > parse_bits(<<"[1,2,3]">>, decode.list(of: decode.int))
+ * Ok([1, 2, 3])
+ * ```
+ *
+ * ```gleam
+ * > parse_bits(<<"[">>, decode.list(of: decode.int))
+ * Error(UnexpectedEndOfInput)
+ * ```
+ *
+ * ```gleam
+ * > parse_bits(<<"1">>, decode.string)
+ * Error(UnableToDecode([decode.DecodeError("String", "Int", [])])),
+ * ```
+ */
+export function parse_bits(json, decoder) {
+  return $result.try$(
+    decode_to_dynamic(json),
+    (dynamic_value) => {
+      let _pipe = $decode.run(dynamic_value, decoder);
+      return $result.map_error(
+        _pipe,
+        (var0) => { return new UnableToDecode(var0); },
+      );
+    },
+  );
+}
+
+/**
+ * Convert a JSON value into a string.
+ *
+ * Where possible prefer the `to_string_tree` function as it is faster than
+ * this function, and BEAM VM IO is optimised for sending `StringTree` data.
+ *
+ * ## Examples
+ *
+ * ```gleam
+ * > to_string(array([1, 2, 3], of: int))
+ * "[1,2,3]"
+ * ```
+ */
+export function to_string(json) {
+  return do_to_string(json);
+}
+
+/**
+ * Encode a string into JSON, using normal JSON escaping.
+ *
+ * ## Examples
+ *
+ * ```gleam
+ * > to_string(string("Hello!"))
+ * "\"Hello!\""
+ * ```
+ */
+export function string(input) {
+  return do_string(input);
+}
+
+/**
+ * Encode a bool into JSON.
+ *
+ * ## Examples
+ *
+ * ```gleam
+ * > to_string(bool(False))
+ * "false"
+ * ```
+ */
+export function bool(input) {
+  return do_bool(input);
+}
+
+/**
+ * Encode an int into JSON.
+ *
+ * ## Examples
+ *
+ * ```gleam
+ * > to_string(int(50))
+ * "50"
+ * ```
+ */
+export function int(input) {
+  return do_int(input);
+}
+
+/**
+ * Encode a float into JSON.
+ *
+ * ## Examples
+ *
+ * ```gleam
+ * > to_string(float(4.7))
+ * "4.7"
+ * ```
+ */
+export function float(input) {
+  return do_float(input);
+}
+
+/**
+ * The JSON value null.
+ *
+ * ## Examples
+ *
+ * ```gleam
+ * > to_string(null())
+ * "null"
+ * ```
+ */
+export function null$() {
+  return do_null();
+}
+
+/**
+ * Encode an optional value into JSON, using null if it is the `None` variant.
+ *
+ * ## Examples
+ *
+ * ```gleam
+ * > to_string(nullable(Some(50), of: int))
+ * "50"
+ * ```
+ *
+ * ```gleam
+ * > to_string(nullable(None, of: int))
+ * "null"
+ * ```
+ */
+export function nullable(input, inner_type) {
+  if (input instanceof Some) {
+    let value = input[0];
+    return inner_type(value);
+  } else {
+    return null$();
+  }
+}
+
+/**
+ * Encode a list of key-value pairs into a JSON object.
+ *
+ * ## Examples
+ *
+ * ```gleam
+ * > to_string(object([
+ *   #("game", string("Pac-Man")),
+ *   #("score", int(3333360)),
+ * ]))
+ * "{\"game\":\"Pac-Mac\",\"score\":3333360}"
+ * ```
+ */
+export function object(entries) {
+  return do_object(entries);
+}
+
+/**
+ * Encode a list of JSON values into a JSON array.
+ *
+ * ## Examples
+ *
+ * ```gleam
+ * > to_string(preprocessed_array([int(1), float(2.0), string("3")]))
+ * "[1, 2.0, \"3\"]"
+ * ```
+ */
+export function preprocessed_array(from) {
+  return do_preprocessed_array(from);
+}
+
+/**
+ * Encode a list into a JSON array.
+ *
+ * ## Examples
+ *
+ * ```gleam
+ * > to_string(array([1, 2, 3], of: int))
+ * "[1, 2, 3]"
+ * ```
+ */
+export function array(entries, inner_type) {
+  let _pipe = entries;
+  let _pipe$1 = $list.map(_pipe, inner_type);
+  return preprocessed_array(_pipe$1);
+}
+
+/**
+ * Encode a Dict into a JSON object using the supplied functions to encode
+ * the keys and the values respectively.
+ *
+ * ## Examples
+ *
+ * ```gleam
+ * > to_string(dict(dict.from_list([ #(3, 3.0), #(4, 4.0)]), int.to_string, float)
+ * "{\"3\": 3.0, \"4\": 4.0}"
+ * ```
+ */
+export function dict(dict, keys, values) {
+  return object(
+    $dict.fold(
+      dict,
+      toList([]),
+      (acc, k, v) => { return listPrepend([keys(k), values(v)], acc); },
+    ),
+  );
+}