add Char module

Author: aspeddro

src/Core__Char.mjs

@@ -0,0 +1,106 @@
+// Generated by ReScript, PLEASE EDIT WITH CARE
+
+import * as Bytes from "rescript/lib/es6/bytes.js";
+import * as PervasivesU from "rescript/lib/es6/pervasivesU.js";
+
+function chr(n) {
+  if (n < 0 || n > 255) {
+    return PervasivesU.invalid_arg("Char.chr");
+  } else {
+    return n;
+  }
+}
+
+function escaped(param) {
+  var exit = 0;
+  if (param >= 40) {
+    if (param === 92) {
+      return "\\\\";
+    }
+    exit = param >= 127 ? 1 : 2;
+  } else if (param >= 32) {
+    if (param >= 39) {
+      return "\\'";
+    }
+    exit = 2;
+  } else if (param >= 14) {
+    exit = 1;
+  } else {
+    switch (param) {
+      case 8 :
+          return "\\b";
+      case 9 :
+          return "\\t";
+      case 10 :
+          return "\\n";
+      case 0 :
+      case 1 :
+      case 2 :
+      case 3 :
+      case 4 :
+      case 5 :
+      case 6 :
+      case 7 :
+      case 11 :
+      case 12 :
+          exit = 1;
+          break;
+      case 13 :
+          return "\\r";
+      
+    }
+  }
+  switch (exit) {
+    case 1 :
+        var s = [
+          0,
+          0,
+          0,
+          0
+        ];
+        s[0] = /* '\\' */92;
+        s[1] = 48 + (param / 100 | 0) | 0;
+        s[2] = 48 + (param / 10 | 0) % 10 | 0;
+        s[3] = 48 + param % 10 | 0;
+        return Bytes.to_string(s);
+    case 2 :
+        var s$1 = [0];
+        s$1[0] = param;
+        return Bytes.to_string(s$1);
+    
+  }
+}
+
+function lowercaseAscii(c) {
+  if (c >= /* 'A' */65 && c <= /* 'Z' */90) {
+    return c + 32 | 0;
+  } else {
+    return c;
+  }
+}
+
+function uppercaseAscii(c) {
+  if (c >= /* 'a' */97 && c <= /* 'z' */122) {
+    return c - 32 | 0;
+  } else {
+    return c;
+  }
+}
+
+function compare(c1, c2) {
+  return c1 - c2 | 0;
+}
+
+function equal(c1, c2) {
+  return (c1 - c2 | 0) === 0;
+}
+
+export {
+  chr ,
+  escaped ,
+  lowercaseAscii ,
+  uppercaseAscii ,
+  compare ,
+  equal ,
+}
+/* No side effect */

src/Core__Char.res

@@ -0,0 +1,68 @@
+/*
+                             OCaml
+
+         Xavier Leroy, projet Cristal, INRIA Rocquencourt
+
+Copyright 1996 Institut National de Recherche en Informatique et en Automatique.
+
+All rights reserved.  This file is distributed under the terms of
+the GNU Lesser General Public License version 2.1, with the
+special exception on linking described in the file LICENSE.
+*/
+
+
+type t = char
+
+external code: char => int = "%identity"
+external unsafeChr: int => char = "%identity"
+
+let chr = n =>
+  if n < 0 || n > 255 {
+    invalid_arg("Char.chr")
+  } else {
+    unsafeChr(n)
+  }
+
+external bytes_create: int => bytes = "?create_bytes"
+external bytes_unsafe_set: (bytes, int, char) => unit = "%bytes_unsafe_set"
+external unsafe_to_string: bytes => string = "%bytes_to_string"
+
+let escaped = param =>
+  switch param {
+  | '\'' => "\\'"
+  | '\\' => "\\\\"
+  | '\n' => "\\n"
+  | '\t' => "\\t"
+  | '\r' => "\\r"
+  | '\b' => "\\b"
+  | ' ' .. '~' as c =>
+    let s = bytes_create(1)
+    bytes_unsafe_set(s, 0, c)
+    unsafe_to_string(s)
+  | c =>
+    let n = code(c)
+    let s = bytes_create(4)
+    bytes_unsafe_set(s, 0, '\\')
+    bytes_unsafe_set(s, 1, unsafeChr(48 + n / 100))
+    bytes_unsafe_set(s, 2, unsafeChr(48 + mod(n / 10, 10)))
+    bytes_unsafe_set(s, 3, unsafeChr(48 + mod(n, 10)))
+    unsafe_to_string(s)
+  }
+
+let lowercaseAscii = c =>
+  if c >= 'A' && c <= 'Z' {
+    unsafeChr(code(c) + 32)
+  } else {
+    c
+  }
+
+let uppercaseAscii = c =>
+  if c >= 'a' && c <= 'z' {
+    unsafeChr(code(c) - 32)
+  } else {
+    c
+  }
+
+
+let compare = (c1, c2) => code(c1) - code(c2)
+let equal = (c1: t, c2: t) => compare(c1, c2) == 0

src/Core__Char.resi

@@ -0,0 +1,57 @@
+/*
+                             OCaml
+
+         Xavier Leroy, projet Cristal, INRIA Rocquencourt
+
+Copyright 1996 Institut National de Recherche en Informatique et en Automatique.
+
+All rights reserved.  This file is distributed under the terms of
+the GNU Lesser General Public License version 2.1, with the
+special exception on linking described in the file LICENSE.
+*/
+
+/*** Character operations. */
+
+/** An alias for the type of characters. */
+type t = char
+
+/** Return the ASCII code of the argument. */
+external code: char => int = "%identity"
+
+/** Return the character with the given ASCII code.
+   Raise [Invalid_argument "Char.chr"] if the argument is
+   outside the range 0--255. */
+let chr: int => char
+
+/** Return a string representing the given character,
+    with special characters escaped following the lexical conventions
+    of OCaml.
+    All characters outside the ASCII printable range (32..126) are
+    escaped, as well as backslash, double-quote, and single-quote. */
+let escaped: char => string
+
+/** Convert the given character to its equivalent lowercase character,
+   using the US-ASCII character set.
+   @since 4.03.0 */
+let lowercaseAscii: char => char
+
+/** Convert the given character to its equivalent uppercase character,
+   using the US-ASCII character set.
+   @since 4.03.0 */
+let uppercaseAscii: char => char
+
+
+
+/** The comparison function for characters, with the same specification as
+    {!Pervasives.compare}.  Along with the type [t], this function [compare]
+    allows the module [Char] to be passed as argument to the functors
+    {!Set.Make} and {!Map.Make}. */
+let compare: (t, t) => int
+
+/** The equal function for chars.
+    @since 4.03.0 */
+let equal: (t, t) => bool
+
+/* The following is for system use only. Do not call directly. */
+
+external unsafeChr: int => char = "%identity"

src/RescriptCore.mjs

@@ -36,6 +36,8 @@ var $$RegExp;
 
 var $$String;
 
+var Char;
+
 var $$Symbol;
 
 var Type;
@@ -116,6 +118,7 @@ export {
   $$Promise ,
   $$RegExp ,
   $$String ,
+  Char ,
   $$Symbol ,
   Type ,
   $$JSON ,

src/RescriptCore.res

@@ -17,6 +17,7 @@ module Ordering = Core__Ordering
 module Promise = Core__Promise
 module RegExp = Core__RegExp
 module String = Core__String
+module Char = Core__Char
 module Symbol = Core__Symbol
 module Type = Core__Type
 module JSON = Core__JSON