user: What would the C source look like for the assembly code provided here:

```asm
<tokenize>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x30,%rsp
  mov    %rdi,-0x28(%rbp)
  mov    %rsi,-0x30(%rbp)
  movl   $0x0,-0x14(%rbp)
  movq   $0x0,-0x10(%rbp)
  mov    -0x10(%rbp),%rax
  mov    %rax,-0x8(%rbp)
  jmp    L10
L42:
  mov    -0x28(%rbp),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  cmp    $0x29,%eax
  jg     L141
  cmp    $0x9,%eax
  jl     L58
  mov    $0x1,%edx
  mov    %eax,%ecx
  shl    %cl,%rdx
  mov    %rdx,%rax
  movabs $0x34200000000,%rdx
  and    %rax,%rdx
  test   %rdx,%rdx
  setne  %dl
  test   %dl,%dl
  jne    L29
  movabs $0x100000200,%rdx
  and    %rax,%rdx
  test   %rdx,%rdx
  setne  %dl
  test   %dl,%dl
  jne    L40
  movabs $0x400000000,%rdx
  and    %rdx,%rax
  test   %rax,%rax
  setne  %al
  test   %al,%al
  jne    L35
  jmp    L58
L141:
  cmp    $0x7c,%eax
  jne    L58
L29:
  mov    -0x10(%rbp),%rax
  sub    -0x8(%rbp),%rax
  mov    %rax,%rdx
  mov    -0x28(%rbp),%rcx
  mov    -0x8(%rbp),%rax
  add    %rax,%rcx
  lea    -0x30(%rbp),%rax
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <new_tok@plt>
  add    %eax,-0x14(%rbp)
  mov    -0x28(%rbp),%rdx
  mov    -0x10(%rbp),%rax
  lea    (%rdx,%rax,1),%rcx
  lea    -0x30(%rbp),%rax
  mov    $0x1,%edx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <new_tok@plt>
  add    %eax,-0x14(%rbp)
  mov    -0x10(%rbp),%rax
  add    $0x1,%rax
  mov    %rax,-0x8(%rbp)
  jmp    L51
L40:
  mov    -0x10(%rbp),%rax
  sub    -0x8(%rbp),%rax
  mov    %rax,%rdx
  mov    -0x28(%rbp),%rcx
  mov    -0x8(%rbp),%rax
  add    %rax,%rcx
  lea    -0x30(%rbp),%rax
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <new_tok@plt>
  add    %eax,-0x14(%rbp)
  mov    -0x10(%rbp),%rax
  add    $0x1,%rax
  mov    %rax,-0x8(%rbp)
  jmp    L51
L91:
  addq   $0x1,-0x10(%rbp)
L35:
  mov    -0x10(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  cmp    $0x22,%al
  je     L78
  mov    -0x10(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  test   %al,%al
  jne    L91
L78:
  mov    -0x10(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  cmp    $0x22,%al
  jne    L19
  addq   $0x1,-0x10(%rbp)
  jmp    L19
L58:
  nop
  jmp    L51
L19:
  nop
L51:
  addq   $0x1,-0x10(%rbp)
L10:
  mov    -0x28(%rbp),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  test   %al,%al
  jne    L42
  mov    -0x10(%rbp),%rax
  sub    -0x8(%rbp),%rax
  mov    %rax,%rdx
  mov    -0x28(%rbp),%rcx
  mov    -0x8(%rbp),%rax
  add    %rax,%rcx
  lea    -0x30(%rbp),%rax
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <new_tok@plt>
  add    %eax,-0x14(%rbp)
  mov    -0x14(%rbp),%eax
  leave
  ret
```

assistant: ```c
unsigned int tokenize(const char *expr, struct tst_expr_tok *last) {
  size_t i, j;
  unsigned int token_cnt = 0;
  for (j = i = 0; expr[i]; i++) {
    switch (expr[i]) {
    case '(':
    case ')':
    case '!':
    case '&':
    case '|':
      token_cnt += new_tok(&last, &expr[j], i - j);
      token_cnt += new_tok(&last, &expr[i], 1);
      j = i + 1;
      break;
    case '\t':
    case ' ':
      token_cnt += new_tok(&last, &expr[j], i - j);
      j = i + 1;
      break;
    case '"':
      while (expr[i + 1] != '"' && expr[i + 1])
        i++;
      if (expr[i + 1] == '"')
        i++;
      break;
    default:
      break;
    }
  }
  token_cnt += new_tok(&last, &expr[j], i - j);
  return token_cnt;
}
```