Lighter pointers

Author: AlexanderOMara

libDER/DER_Decode.test.ts

@@ -33,8 +33,12 @@ Deno.test('DERSequence', () => {
 		assertEquals(spec.end, null);
 	}
 	{
-		const nextItem = new Uint8Ptr(new ArrayBuffer(1));
-		const end = new Uint8Ptr(nextItem.buffer, nextItem.byteOffset + 1);
+		const ab = new ArrayBuffer(10);
+		const nextItem = new Uint8Ptr(ab);
+		const end = new Uint8Ptr(
+			nextItem.buffer,
+			nextItem.byteOffset + ab.byteLength,
+		);
 		const spec = new DERSequence(nextItem, end);
 		assertEquals(spec.nextItem, nextItem);
 		assertEquals(spec.end, end);

libc/c.ts

@@ -78,6 +78,13 @@ export type double = number;
  */
 export type _const<T> = T;
 
+/**
+ * Pointer.
+ *
+ * @template T Pointer type.
+ */
+export type _ptr<T> = Record<number, T>;
+
 /**
  * Bitfield bits.
  *

sec/SecCertificate.test.ts

@@ -1,4 +1,4 @@
-import { Bool8Ptr, Int32Ptr, Uint8Ptr } from '@hqtsm/struct';
+import { Uint8Ptr } from '@hqtsm/struct';
 import { assertEquals, assertInstanceOf } from '@std/assert';
 import { INT32_MAX, INT32_MIN, UINT32_MAX } from '../libc/stdint.ts';
 import { digest } from '../spec/hash.ts';
@@ -48,8 +48,7 @@ Deno.test('SecCertificateCopyIssuerSHA256Digest', async () => {
 });
 
 Deno.test('GetDecimalValueOfString', () => {
-	const value = new Int32Ptr(new ArrayBuffer(4));
-	value[0] = 42;
+	const value = [42];
 	assertEquals(GetDecimalValueOfString('', value), false);
 	assertEquals(value[0], 42);
 	assertEquals(GetDecimalValueOfString('.', value), false);
@@ -135,7 +134,7 @@ Deno.test('SecCertificateCreateOidDataFromString', () => {
 });
 
 Deno.test('SecCertificateCopyExtensionValue', () => {
-	const b = new Bool8Ptr(new ArrayBuffer(1));
+	const b = [false];
 	const sce = new SecCertificateExtension();
 	const sc = new __SecCertificate();
 	const oid = '1.2.3';

sec/SecCertificate.ts

@@ -1,5 +1,4 @@
 import { toStringTag } from '@hqtsm/class';
-import { Int32Ptr, type Ptr } from '@hqtsm/struct';
 import type { CFIndex } from '../CoreFoundation/CFBase.ts';
 import type { SubtleCryptoDigest } from '../helpers/crypto.ts';
 import {
@@ -8,7 +7,7 @@ import {
 	pointerBytes,
 	viewBytes,
 } from '../helpers/memory.ts';
-import type { bool } from '../libc/c.ts';
+import type { _ptr, bool } from '../libc/c.ts';
 import { INT32_MAX, type int32_t } from '../libc/stdint.ts';
 import { DERItem } from '../libDER/DERItem.ts';
 import type { SecCertificateRef } from '../Security/SecBase.ts';
@@ -141,7 +140,7 @@ export async function SecCertificateCopyIssuerSHA256Digest(
  */
 export function GetDecimalValueOfString(
 	string: string,
-	value: Ptr<int32_t>,
+	value: _ptr<int32_t>,
 ): bool {
 	if (string && /^[0-9]+$/.test(string)) {
 		value[0] = +string | 0;
@@ -179,7 +178,7 @@ export function SecCertificateCreateOidDataFromString(
 
 	const parts = string.split('.');
 	const count = parts.length;
-	const xp = new Int32Ptr(new ArrayBuffer(4));
+	const xp = [0];
 
 	GetDecimalValueOfString(parts[0], xp);
 	let x = xp[0] * 40;
@@ -217,7 +216,7 @@ export function SecCertificateCreateOidDataFromString(
 export function SecCertificateCopyExtensionValue(
 	certificate: SecCertificateRef | null,
 	extensionOID: string | ArrayBufferLikeData | null,
-	isCritical: Ptr<bool> | null,
+	isCritical: _ptr<bool> | null,
 ): Uint8Array<ArrayBuffer> | null {
 	if (!certificate || !extensionOID) {
 		return null;