steipete

We're working on supporting Bitcode in PSPDFKit but hit a blocking issue with OpenSSL (latest 1.0.2d).

We're using a script that downloads and builds OpenSSL into fat static libraries for both Mac and iOS. I've put the gist here:
https://gist.github.com/steipete/ce09ba176a4b8ef66b2d/bf053eab1c0f8494dcd3748079543c4ed4367b9c

Enabling Bitcode should be as easy as adding `-fembed-bitcode` as clang flag according to this entry. That's exactly what I did.

Now things build, but the script eventually stops with this error:
ld: could not open bitcode temp file: ../libcrypto.a(aes-x86_64.o) for architecture x86_64

jspahrsummers

#define self \
	( \
		_Pragma("clang diagnostic push") _Pragma("clang diagnostic ignored \"-Wunused-value\"") self, \
		/* Depends on _cmd being a const copy, like other captured variables. */ \
		_Pragma("clang diagnostic pop") (*(_cmd = _cmd, &self)) \
	)

// Replace libextobjc's @weakify with one that's aware of the "self" macro.
#undef ext_weakify_
#define ext_weakify_(INDEX, CONTEXT, VAR) \

steventroughtonsmith

import subprocess

def looksLikeBeginning(doc,seg,adr):
	if doc.is64Bits() and seg.readByte(adr) == 0x55 and seg.readByte(adr + 1) == 0x48 and seg.readByte(adr + 2) == 0x89 and seg.readByte(adr + 3) == 0xE5:
		return True
	if not doc.is64Bits() and seg.readByte(adr) == 0x55 and seg.readByte(adr + 1) == 0x89 and seg.readByte(adr + 2) == 0xE5:
		return True
	return False

doc = Document.getCurrentDocument()

rnapier

import Foundation

// All the complexity needed to avoid this code probably isn't worth it in the majority of cases.
// Particularly note that the data model doesn't 100% line up with the JSON (some keys have
// slightly different names for instance). A system flexible enough to handle that (say, something
// like Go's json.Marshal) would be nice, but this code, while slightly tedious, isn't really bad.
// Basically I'm saying that a richer JSON<->Swift system built into stdlib would be nice, but the
// bar is pretty high to go pulling in a helper library.
//
// That said, compare the Go code below, and I think it really is much simpler, and scales much better

steipete

// clang -cc1 -analyzer-checker-help
// OVERVIEW: Clang Static Analyzer Checkers List
// USAGE: -analyzer-checker <CHECKER or PACKAGE,...>
// 
// CHECKERS:
//   alpha.core.BoolAssignment       Warn about assigning non-{0,1} values to Boolean variables
//   alpha.core.CallAndMessageUnInitRefArg
//                                   Check for logical errors for function calls and Objective-C message expressions (e.g., uninitialized arguments, null function pointers, and pointer to undefined variables)
//   alpha.core.CastSize             Check when casting a malloc'ed type T, whether the size is a multiple of the size of T
//   alpha.core.CastToStruct         Check for cast from non-struct pointer to struct pointer

krzyzanowskim

// Playground - noun: a place where people can play

import Foundation

typealias Byte = UInt8

protocol GenericIntegerType: IntegerType {
    init(_ v: Int)
    init(_ v: UInt)
    init(_ v: Int8)

mikeash

import Cocoa

enum CoroutineState {
    case Fresh, Running, Blocked, Canceled, Done
}

struct CoroutineCancellation: ErrorType {}

class CoroutineImpl<InputType, YieldType> {
    let body: (yield: YieldType throws -> InputType) throws -> Void

nicklockwood

import Foundation

enum FooType: String, Codable {
  case bar, baz
}

protocol Foo: AnyObject, Codable {
  var type: FooType { get }
}

benilovj

// UIImage+Alpha.h
// Created by Trevor Harmon on 9/20/09.
// Free for personal or commercial use, with or without modification.
// No warranty is expressed or implied.

// Helper methods for adding an alpha layer to an image
@interface UIImage (Alpha)
- (BOOL)hasAlpha;
- (UIImage *)imageWithAlpha;
- (UIImage *)transparentBorderImage:(NSUInteger)borderSize;

andymatuschak

//
//  CollectionViewDataSource.swift
//  Khan Academy
//
//  Created by Andy Matuschak on 10/14/14.
//  Copyright (c) 2014 Khan Academy. All rights reserved.
//

import UIKit