blob: 00c2e3882a2179151d0ac05452b80c08c2371f9b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
%# -*- mode:c; style:ruby; coding: utf-8; indent-tabs-mode: nil -*-
%# Copyright (c) 2018 Urabe, Shyouhei. All rights reserved.
%#
%# This file is a part of the programming language Ruby. Permission is hereby
%# granted, to either redistribute and/or modify this file, provided that the
%# conditions mentioned in the file COPYING are met. Consult the file for
%# details.
%;
static bool
leafness_of_getglobal(VALUE gentry)
{
const struct rb_global_entry *e = (void *)gentry;
if (UNLIKELY(rb_gvar_is_traced(e))) {
return false;
}
else {
/* We cannot write this function using a switch() because a
* case label cannot be a function pointer. */
static rb_gvar_getter_t *const whitelist[] = {
rb_gvar_val_getter,
rb_gvar_var_getter,
rb_gvar_undef_getter,
};
rb_gvar_getter_t *f = rb_gvar_getter_function_of(e);
int i;
for (i = 0; i < numberof(whitelist); i++) {
if (f == whitelist[i]) {
return true;
}
}
return false;
}
}
static bool
leafness_of_setglobal(VALUE gentry)
{
const struct rb_global_entry *e = (void *)gentry;
if (UNLIKELY(rb_gvar_is_traced(e))) {
return false;
}
else {
/* We cannot write this function using a switch() because a
* case label cannot be a function pointer. */
static rb_gvar_setter_t *const whitelist[] = {
rb_gvar_val_setter,
rb_gvar_readonly_setter,
rb_gvar_var_setter,
rb_gvar_undef_setter,
};
rb_gvar_setter_t *f = rb_gvar_setter_function_of(e);
int i;
for (i = 0; i < numberof(whitelist); i++) {
if (f == whitelist[i]) {
return true;
}
}
return false;
}
}
#include "iseq.h"
static bool
leafness_of_defined(rb_num_t op_type)
{
/* see also: vm_insnhelper.c:vm_defined() */
switch (op_type) {
case DEFINED_IVAR:
case DEFINED_IVAR2:
case DEFINED_GVAR:
case DEFINED_CVAR:
case DEFINED_YIELD:
case DEFINED_REF:
case DEFINED_ZSUPER:
return false;
case DEFINED_CONST:
/* has rb_autoload_load(); */
return false;
case DEFINED_FUNC:
case DEFINED_METHOD:
/* calls #respond_to_missing? */
return false;
default:
rb_bug("unknown operand %ld: blame @shyouhei.", op_type);
}
}
static bool
leafness_of_checkmatch(rb_num_t flag)
{
/* see also: vm_insnhelper.c:check_match() */
if (flag == VM_CHECKMATCH_TYPE_WHEN) {
return true;
}
else {
/* has rb_funcallv() */
return false;
}
}
|