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ddc8de03 | 1 | /* Marshalling and unmarshalling. |
2afd3180 | 2 | Copyright (C) 2014-2017 Free Software Foundation, Inc. |
ddc8de03 PM |
3 | |
4 | This file is part of GCC. | |
5 | ||
6 | GCC is free software; you can redistribute it and/or modify it under | |
7 | the terms of the GNU General Public License as published by the Free | |
8 | Software Foundation; either version 3, or (at your option) any later | |
9 | version. | |
10 | ||
11 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 | for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GCC; see the file COPYING3. If not see | |
18 | <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include <cc1plugin-config.h> | |
21 | #include <new> | |
22 | #include <string.h> | |
23 | #include "marshall.hh" | |
24 | #include "connection.hh" | |
25 | ||
26 | cc1_plugin::status | |
27 | cc1_plugin::unmarshall_check (connection *conn, unsigned long long check) | |
28 | { | |
29 | unsigned long long r; | |
30 | ||
31 | if (!unmarshall (conn, &r)) | |
32 | return FAIL; | |
33 | return check == r ? OK : FAIL; | |
34 | } | |
35 | ||
36 | cc1_plugin::status | |
37 | cc1_plugin::marshall_intlike (connection *conn, unsigned long long val) | |
38 | { | |
39 | if (!conn->send ('i')) | |
40 | return FAIL; | |
41 | return conn->send (&val, sizeof (val)); | |
42 | } | |
43 | ||
44 | cc1_plugin::status | |
45 | cc1_plugin::unmarshall_intlike (connection *conn, unsigned long long *result) | |
46 | { | |
47 | if (!conn->require ('i')) | |
48 | return FAIL; | |
49 | return conn->get (result, sizeof (*result)); | |
50 | } | |
51 | ||
ddc8de03 PM |
52 | cc1_plugin::status |
53 | cc1_plugin::marshall (connection *conn, const char *str) | |
54 | { | |
55 | if (!conn->send ('s')) | |
56 | return FAIL; | |
57 | ||
58 | unsigned long long len = str == NULL ? -1ULL : strlen (str); | |
59 | if (!conn->send (&len, sizeof (len))) | |
60 | return FAIL; | |
61 | ||
62 | if (str == NULL) | |
63 | return OK; | |
64 | ||
65 | return conn->send (str, len); | |
66 | } | |
67 | ||
68 | cc1_plugin::status | |
69 | cc1_plugin::unmarshall (connection *conn, char **result) | |
70 | { | |
71 | unsigned long long len; | |
72 | ||
73 | if (!conn->require ('s')) | |
74 | return FAIL; | |
75 | if (!conn->get (&len, sizeof (len))) | |
76 | return FAIL; | |
77 | ||
78 | if (len == -1ULL) | |
79 | { | |
80 | *result = NULL; | |
81 | return OK; | |
82 | } | |
83 | ||
84 | char *str = new (std::nothrow) char[len + 1]; | |
85 | if (str == NULL) | |
86 | return FAIL; | |
87 | ||
88 | if (!conn->get (str, len)) | |
89 | { | |
90 | delete[] str; | |
91 | return FAIL; | |
92 | } | |
93 | ||
94 | str[len] = '\0'; | |
95 | *result = str; | |
96 | ||
97 | return OK; | |
98 | } | |
99 | ||
100 | cc1_plugin::status | |
8db29d88 AO |
101 | cc1_plugin::marshall_array_start (connection *conn, char id, |
102 | size_t n_elements) | |
ddc8de03 | 103 | { |
8db29d88 | 104 | if (!conn->send (id)) |
ddc8de03 PM |
105 | return FAIL; |
106 | ||
8db29d88 | 107 | unsigned long long r = n_elements; |
ddc8de03 PM |
108 | if (!conn->send (&r, sizeof (r))) |
109 | return FAIL; | |
110 | ||
8db29d88 | 111 | return OK; |
ddc8de03 PM |
112 | } |
113 | ||
114 | cc1_plugin::status | |
8db29d88 AO |
115 | cc1_plugin::marshall_array_elmts (connection *conn, size_t n_bytes, |
116 | void *elements) | |
117 | { | |
118 | return conn->send (elements, n_bytes); | |
119 | } | |
120 | ||
121 | cc1_plugin::status | |
122 | cc1_plugin::unmarshall_array_start (connection *conn, char id, | |
123 | size_t *n_elements) | |
ddc8de03 PM |
124 | { |
125 | unsigned long long len; | |
126 | ||
8db29d88 | 127 | if (!conn->require (id)) |
ddc8de03 PM |
128 | return FAIL; |
129 | if (!conn->get (&len, sizeof (len))) | |
130 | return FAIL; | |
131 | ||
8db29d88 AO |
132 | *n_elements = len; |
133 | ||
134 | return OK; | |
135 | } | |
136 | ||
137 | cc1_plugin::status | |
138 | cc1_plugin::unmarshall_array_elmts (connection *conn, size_t n_bytes, | |
139 | void *elements) | |
140 | { | |
141 | return conn->get (elements, n_bytes); | |
142 | } | |
143 | ||
144 | cc1_plugin::status | |
145 | cc1_plugin::marshall (connection *conn, const gcc_type_array *a) | |
146 | { | |
147 | size_t len; | |
148 | ||
149 | if (a) | |
150 | len = a->n_elements; | |
151 | else | |
152 | len = (size_t)-1; | |
153 | ||
154 | if (!marshall_array_start (conn, 'a', len)) | |
155 | return FAIL; | |
156 | ||
157 | if (!a) | |
158 | return OK; | |
159 | ||
160 | return marshall_array_elmts (conn, len * sizeof (a->elements[0]), | |
161 | a->elements); | |
162 | } | |
163 | ||
164 | cc1_plugin::status | |
165 | cc1_plugin::unmarshall (connection *conn, gcc_type_array **result) | |
166 | { | |
167 | size_t len; | |
168 | ||
169 | if (!unmarshall_array_start (conn, 'a', &len)) | |
170 | return FAIL; | |
171 | ||
172 | if (len == (size_t)-1) | |
173 | { | |
174 | *result = NULL; | |
175 | return OK; | |
176 | } | |
177 | ||
178 | gcc_type_array *gta = new gcc_type_array; | |
ddc8de03 | 179 | |
8db29d88 AO |
180 | gta->n_elements = len; |
181 | gta->elements = new gcc_type[len]; | |
ddc8de03 | 182 | |
8db29d88 AO |
183 | if (!unmarshall_array_elmts (conn, |
184 | len * sizeof (gta->elements[0]), | |
185 | gta->elements)) | |
ddc8de03 | 186 | { |
8db29d88 | 187 | delete[] gta->elements; |
ddc8de03 PM |
188 | delete *result; |
189 | return FAIL; | |
190 | } | |
191 | ||
8db29d88 AO |
192 | *result = gta; |
193 | ||
ddc8de03 PM |
194 | return OK; |
195 | } |