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111
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1 /* Test of cpp_callbacks::comments. */
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2
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3 #include "gcc-plugin.h"
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4 #include "config.h"
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5 #include "system.h"
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6 #include "coretypes.h"
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7 #include "cpplib.h"
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8 #include "diagnostic.h"
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9 #include "c-family/c-pragma.h"
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10
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11 int plugin_is_GPL_compatible;
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12
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13 /* Test callback for cpp_callbacks::comments. */
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14
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15 void
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145
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16 my_comment_cb (cpp_reader *, location_t loc,
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111
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17 const unsigned char *content, size_t len)
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18 {
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19 if (in_system_header_at (loc))
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20 return;
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21
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22 /* CONTENT contains the opening slash-star (or slash-slash),
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23 and for C-style comments contains the closing star-slash. */
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24 gcc_assert (len >= 2);
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25 gcc_assert (content[0] == '/');
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26 gcc_assert (content[1] == '*' || content[1] == '/');
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27 bool c_style = (content[1] == '*');
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28 if (c_style)
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29 {
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30 gcc_assert (content[len - 2] == '*');
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31 gcc_assert (content[len - 1] == '/');
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32 }
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33
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34 if (c_style)
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35 inform (loc, "got C-style comment; length=%i", len);
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36 else
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37 inform (loc, "got C++-style comment; length=%i", len);
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38
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39 /* Print the content of the comment.
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40 For a C-style comment, the buffer CONTENT contains the opening
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41 slash-star and closing star-slash, so we can't directly verify
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42 it in the DejaGnu test without adding another comment, which
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43 would trigger this callback again.
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44 Hence we skip the syntactically-significant parts of the comment
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45 when printing it. */
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46 fprintf (stderr, "stripped content of comment: >");
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47 /* Avoid printing trailing star-slash. */
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48 if (c_style)
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49 len -= 2;
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50 for (size_t i = 2; i < len; i++)
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51 fputc (content[i], stderr);
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52 fprintf (stderr, "<\n");
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53 }
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54
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55 int
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56 plugin_init (struct plugin_name_args *plugin_info,
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57 struct plugin_gcc_version *version)
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58 {
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59 cpp_callbacks *cb = cpp_get_callbacks (parse_in);
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60 cb->comment = my_comment_cb;
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61
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62 return 0;
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63 }
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