diff options
Diffstat (limited to 'gcc/gcc-urlifier.cc')
| -rw-r--r-- | gcc/gcc-urlifier.cc | 106 |
1 files changed, 87 insertions, 19 deletions
diff --git a/gcc/gcc-urlifier.cc b/gcc/gcc-urlifier.cc index 877445c..6bd176f 100644 --- a/gcc/gcc-urlifier.cc +++ b/gcc/gcc-urlifier.cc @@ -24,6 +24,8 @@ along with GCC; see the file COPYING3. If not see #include "pretty-print.h" #include "pretty-print-urlifier.h" #include "gcc-urlifier.h" +#include "opts.h" +#include "options.h" #include "selftest.h" namespace { @@ -34,23 +36,34 @@ namespace { class gcc_urlifier : public urlifier { public: + gcc_urlifier (unsigned int lang_mask) + : m_lang_mask (lang_mask) + {} + char *get_url_for_quoted_text (const char *p, size_t sz) const final override; - const char *get_url_suffix_for_quoted_text (const char *p, size_t sz) const; + label_text get_url_suffix_for_quoted_text (const char *p, size_t sz) const; /* We use ATTRIBUTE_UNUSED as this helper is called only from ASSERTs. */ - const char *get_url_suffix_for_quoted_text (const char *p) const ATTRIBUTE_UNUSED; + label_text get_url_suffix_for_quoted_text (const char *p) const ATTRIBUTE_UNUSED; private: + label_text get_url_suffix_for_option (const char *p, size_t sz) const; + static char * make_doc_url (const char *doc_url_suffix); + + unsigned int m_lang_mask; }; /* class gcc_urlifier : public urlifier. */ +/* Manage a hard-coded mapping from quoted string to URL suffixes + in gcc-urlifier.def */ + #define DOC_URL(QUOTED_TEXT, URL_SUFFIX) \ { (QUOTED_TEXT), (URL_SUFFIX) } -const struct +static const struct { const char *quoted_text; const char *url_suffix; @@ -60,32 +73,53 @@ const struct }; +/* Implementation of urlifier::get_url_for_quoted_text vfunc for GCC + diagnostics. */ + char * gcc_urlifier::get_url_for_quoted_text (const char *p, size_t sz) const { - if (const char *url_suffix = get_url_suffix_for_quoted_text (p, sz)) - return make_doc_url (url_suffix); + label_text url_suffix = get_url_suffix_for_quoted_text (p, sz); + if (url_suffix.get ()) + return make_doc_url (url_suffix.get ()); return nullptr; } -const char * +/* Look for a URL for the quoted string (P, SZ). + Return the url suffix if found, or nullptr otherwise. */ + +label_text gcc_urlifier::get_url_suffix_for_quoted_text (const char *p, size_t sz) const { - /* Binary search. This assumes that the quoted_text fields of doc_urls + if (sz == 0) + return label_text (); + + /* If this is an option, look up the option and see if we have + a URL for it. */ + if (p[0] == '-') + { + label_text suffix = get_url_suffix_for_option (p, sz); + if (suffix.get ()) + return suffix; + } + + /* Otherwise, look within the hard-coded data table in gcc-urlifier.def. + + Binary search. This assumes that the quoted_text fields of doc_urls are in sorted order. */ int min = 0; int max = ARRAY_SIZE (doc_urls) - 1; while (true) { if (min > max) - return nullptr; + return label_text (); int midpoint = (min + max) / 2; gcc_assert ((size_t)midpoint < ARRAY_SIZE (doc_urls)); int cmp = strncmp (p, doc_urls[midpoint].quoted_text, sz); if (cmp == 0) { if (doc_urls[midpoint].quoted_text[sz] == '\0') - return doc_urls[midpoint].url_suffix; + return label_text::borrow (doc_urls[midpoint].url_suffix); else max = midpoint - 1; } @@ -94,15 +128,45 @@ gcc_urlifier::get_url_suffix_for_quoted_text (const char *p, size_t sz) const else min = midpoint + 1; } - return nullptr; + + /* Not found. */ + return label_text (); } -const char * +/* For use in selftests. */ + +label_text gcc_urlifier::get_url_suffix_for_quoted_text (const char *p) const { return get_url_suffix_for_quoted_text (p, strlen (p)); } +/* Look for a URL for the quoted string (P, SZ) that appears to be + an option. + Return the url suffix if found, or nullptr otherwise. */ + +label_text +gcc_urlifier::get_url_suffix_for_option (const char *p, size_t sz) const +{ + /* Look up this option + + find_opt does a binary search, taking a 0-terminated string, + and skipping the leading '-'. + + We have a (pointer,size) pair that doesn't necessarily have a + terminator, so create a 0-terminated clone of the string. */ + gcc_assert (sz > 0); + char *tmp = xstrndup (p + 1, sz - 1); // skip the leading '-' + size_t opt = find_opt (tmp, m_lang_mask); + free (tmp); + + if (opt >= N_OPTS) + /* Option not recognized. */ + return label_text (); + + return get_option_url_suffix (opt, m_lang_mask); +} + char * gcc_urlifier::make_doc_url (const char *doc_url_suffix) { @@ -115,9 +179,9 @@ gcc_urlifier::make_doc_url (const char *doc_url_suffix) } // anonymous namespace urlifier * -make_gcc_urlifier () +make_gcc_urlifier (unsigned int lang_mask) { - return new gcc_urlifier (); + return new gcc_urlifier (lang_mask); } #if CHECKING_P @@ -137,22 +201,26 @@ gcc_urlifier_cc_tests () doc_urls[idx].quoted_text) < 0); - gcc_urlifier u; + gcc_urlifier u (0); - ASSERT_EQ (u.get_url_suffix_for_quoted_text (""), nullptr); - ASSERT_EQ (u.get_url_suffix_for_quoted_text (")"), nullptr); + ASSERT_EQ (u.get_url_suffix_for_quoted_text ("").get (), nullptr); + ASSERT_EQ (u.get_url_suffix_for_quoted_text (")").get (), nullptr); - ASSERT_STREQ (u.get_url_suffix_for_quoted_text ("#pragma message"), + ASSERT_STREQ (u.get_url_suffix_for_quoted_text ("#pragma message").get (), "gcc/Diagnostic-Pragmas.html"); // Incomplete prefix of a quoted_text - ASSERT_EQ (u.get_url_suffix_for_quoted_text ("#pragma mess"), nullptr); + ASSERT_EQ (u.get_url_suffix_for_quoted_text ("#pragma mess").get (), nullptr); /* Check that every element is findable. */ for (size_t idx = 0; idx < ARRAY_SIZE (doc_urls); idx++) ASSERT_STREQ - (u.get_url_suffix_for_quoted_text (doc_urls[idx].quoted_text), + (u.get_url_suffix_for_quoted_text (doc_urls[idx].quoted_text).get (), doc_urls[idx].url_suffix); + + /* Check an option. */ + ASSERT_STREQ (u.get_url_suffix_for_quoted_text ("-fpack-struct").get (), + "gcc/Code-Gen-Options.html#index-fpack-struct"); } } // namespace selftest |