tenderlove

#!/Users/aaron/.rubies/arm64/ruby-trunk/bin/ruby

# Configure Vim (using vim-lsp) like this where `ls.rb` is this script:
#
# if executable('./ls.rb')
#   au User lsp_setup call lsp#register_server({
#         \ 'name': 'ls.rb',
#         \ 'cmd': ['./ls.rb'],
#         \ 'allowlist': ['ruby'],
#         \ })

tenderlove

#!/Users/aaron/.rubies/arm64/ruby-trunk/bin/ruby

# This is a demo language server for Ruby, written in Ruby.  It just checks
# the syntax of Ruby programs when you save them.
#
# Configure this in Vim by adding the vim-lsp plugin, then doing this
# in your vimrc:
#
#  au User lsp_setup
#        \ lsp#register_server({

tenderlove

require "benchmark/ips"
require "graphql/language/lexer"
require "graphql/language/token"
require "graphql/language/block_string"

schema = DATA.read

Benchmark.ips { |x|
  x.report("graphql") { GraphQL::Language::Lexer.tokenize(schema) }
}

tenderlove

# Okasaki style Functional Red Black Tree
# https://www.cs.tufts.edu/comp/150FP/archive/chris-okasaki/redblack99.pdf
#
# leaves and root are black
# BST
# No red node has a red child
# Every path from the root to a leaf has the same number of black nodes

module RBTree
  class Leaf

tenderlove

require "fisk"
require "aarch64"
require "jit_buffer"
require "fiddle"

x86 = Fisk.new
x86.put_label(:foo)
x86.mov(x86.rax, x86.imm(42))
x86.ret
x86.jmp(x86.label(:foo))

tenderlove

# Smart Health Card decoder
# This decodes the SHC url thing that is stored in smart health card QR codes

str = DATA.readline

require "base64"
require "zlib"
require "json"
require "pp"

tenderlove

# Fiddle, passing a pointer to an int.  This gets the current process command

    module Hacks
      include Fiddle

      func = "_NSGetExecutablePath"
      path_ptr = Fiddle::Handle::DEFAULT[func]
      path = Function.new path_ptr, [TYPE_VOIDP, TYPE_INTPTR_T], TYPE_INT, name: func
      define_singleton_method(func, &path.to_proc)

tenderlove

require "fisk"
require "fisk/helpers"
require "fiddle/import"

module Ruby
  extend Fiddle::Importer

  dlload

  typealias "VALUE", "uintptr_t"

tenderlove

# Have you ever wanted lldb to break in a certain place, but you weren't
# sure where to set the breakpoint?  Look no further than this script!
#
# This script creates a chunk of executable code that uses the int3 x86
# instruction.  This instruction is defined for use by debuggers, and you can
# read more about it here: https://en.wikipedia.org/wiki/INT_%28x86_instruction%29#INT3
#
# When that instruction is executed, the debugger will halt and you can do
# what you need!
#

tenderlove

require "objspace"
require "json"

def go x
  count = GC.stat(:major_gc_count)
  loop do
    info = JSON.parse(ObjectSpace.dump(x))
    break if info["flags"]["old"]
    GC.start
  end