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feat(ext/ffi): Add static method variants to Deno.UnsafePointerView (#15146)

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This commit is contained in:
Aapo Alasuutari 2022-08-05 19:27:12 +03:00 committed by David Sherret
parent 770d1f1715
commit 7ac58719ab
2 changed files with 40 additions and 2 deletions
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16
cli/dts/lib.deno.unstable.d.ts vendored
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@ -535,10 +535,24 @@ declare namespace Deno {
getFloat64(offset?: number): number;
/** Gets a C string (null terminated string) at the specified byte offset from the pointer. */
getCString(offset?: number): string;
/** Gets a C string (null terminated string) at the specified byte offset from the specified pointer. */
static getCString(pointer: BigInt, offset?: number): string;
/** Gets an ArrayBuffer of length `byteLength` at the specified byte offset from the pointer. */
getArrayBuffer(byteLength: number, offset?: number): ArrayBuffer;
/** Copies the memory of the pointer into a typed array. Length is determined from the typed array's `byteLength`. Also takes optional offset from the pointer. */
/** Gets an ArrayBuffer of length `byteLength` at the specified byte offset from the specified pointer. */
static getArrayBuffer(
pointer: BigInt,
byteLength: number,
offset?: number,
): ArrayBuffer;
/** Copies the memory of the pointer into a typed array. Length is determined from the typed array's `byteLength`. Also takes optional byte offset from the pointer. */
copyInto(destination: TypedArray, offset?: number): void;
/** Copies the memory of the specified pointer into a typed array. Length is determined from the typed array's `byteLength`. Also takes optional byte offset from the pointer. */
static copyInto(
pointer: BigInt,
destination: TypedArray,
offset?: number,
): void;
}
/**

26
ext/ffi/00_ffi.js
View file

@ -121,10 +121,25 @@
);
}
static getCString(pointer, offset = 0) {
return core.opSync(
"op_ffi_cstr_read",
offset ? BigInt(pointer) + BigInt(offset) : pointer,
);
}
getArrayBuffer(byteLength, offset = 0) {
return core.opSync(
"op_ffi_get_buf",
offset ? this.pointer + BigInt(offset) : this.pointer,
offset ? BigInt(this.pointer) + BigInt(offset) : this.pointer,
byteLength,
);
}
static getArrayBuffer(pointer, byteLength, offset = 0) {
return core.opSync(
"op_ffi_get_buf",
offset ? BigInt(pointer) + BigInt(offset) : pointer,
byteLength,
);
}
@ -137,6 +152,15 @@
destination.byteLength,
);
}
static copyInto(pointer, destination, offset = 0) {
core.opSync(
"op_ffi_buf_copy_into",
offset ? BigInt(pointer) + BigInt(offset) : pointer,
destination,
destination.byteLength,
);
}
}
class UnsafePointer {