feat(ext/ffi): Support bool FFI type (#15754)

Author: aapoalas

cli/dts/lib.deno.unstable.d.ts

@@ -393,6 +393,8 @@ declare namespace Deno {
     | "usize"
     | "isize";
 
+  type NativeBooleanType = "bool";
+
   type NativePointerType = "pointer";
 
   type NativeBufferType = "buffer";
@@ -408,6 +410,7 @@ declare namespace Deno {
   export type NativeType =
     | NativeNumberType
     | NativeBigIntType
+    | NativeBooleanType
     | NativePointerType
     | NativeBufferType
     | NativeFunctionType;
@@ -419,6 +422,7 @@ declare namespace Deno {
   type ToNativeTypeMap =
     & Record<NativeNumberType, number>
     & Record<NativeBigIntType, PointerValue>
+    & Record<NativeBooleanType, boolean>
     & Record<NativePointerType, PointerValue | null>
     & Record<NativeFunctionType, PointerValue | null>
     & Record<NativeBufferType, TypedArray | null>;
@@ -455,6 +459,7 @@ declare namespace Deno {
   type FromNativeTypeMap =
     & Record<NativeNumberType, number>
     & Record<NativeBigIntType, PointerValue>
+    & Record<NativeBooleanType, boolean>
     & Record<NativePointerType, PointerValue>
     & Record<NativeBufferType, PointerValue>
     & Record<NativeFunctionType, PointerValue>;
@@ -610,6 +615,8 @@ declare namespace Deno {
 
     pointer: bigint;
 
+    /** Gets a boolean at the specified byte offset from the pointer. */
+    getBool(offset?: number): boolean;
     /** Gets an unsigned 8-bit integer at the specified byte offset from the pointer. */
     getUint8(offset?: number): number;
     /** Gets a signed 8-bit integer at the specified byte offset from the pointer. */

ext/ffi/00_ffi.js

@@ -45,6 +45,12 @@
       this.pointer = pointer;
     }
 
+    getBool(offset = 0) {
+      return ops.op_ffi_read_bool(
+        offset ? BigInt(this.pointer) + BigInt(offset) : this.pointer,
+      );
+    }
+
     getUint8(offset = 0) {
       return ops.op_ffi_read_u8(
         offset ? BigInt(this.pointer) + BigInt(offset) : this.pointer,

ext/ffi/jit_trampoline.rs

@@ -23,6 +23,7 @@ macro_rules! cstr {
 
 fn native_arg_to_c(ty: &NativeType) -> &'static str {
   match ty {
+    NativeType::Bool => "bool",
     NativeType::U8 | NativeType::U16 | NativeType::U32 => "uint32_t",
     NativeType::I8 | NativeType::I16 | NativeType::I32 => "int32_t",
     NativeType::Void => "void",
@@ -39,6 +40,7 @@ fn native_arg_to_c(ty: &NativeType) -> &'static str {
 
 fn native_to_c(ty: &NativeType) -> &'static str {
   match ty {
+    NativeType::Bool => "bool",
     NativeType::U8 => "uint8_t",
     NativeType::U16 => "uint16_t",
     NativeType::U32 => "uint32_t",