diff options
Diffstat (limited to 'gcc/input.c')
| -rw-r--r-- | gcc/input.c | 1547 |
1 files changed, 1547 insertions, 0 deletions
diff --git a/gcc/input.c b/gcc/input.c index f91a702..d058b8a 100644 --- a/gcc/input.c +++ b/gcc/input.c @@ -1189,6 +1189,279 @@ dump_location_info (FILE *stream) MAX_SOURCE_LOCATION + 1, UINT_MAX); } +/* string_concat's constructor. */ + +string_concat::string_concat (int num, location_t *locs) + : m_num (num) +{ + m_locs = ggc_vec_alloc <location_t> (num); + for (int i = 0; i < num; i++) + m_locs[i] = locs[i]; +} + +/* string_concat_db's constructor. */ + +string_concat_db::string_concat_db () +{ + m_table = hash_map <location_hash, string_concat *>::create_ggc (64); +} + +/* Record that a string concatenation occurred, covering NUM + string literal tokens. LOCS is an array of size NUM, containing the + locations of the tokens. A copy of LOCS is taken. */ + +void +string_concat_db::record_string_concatenation (int num, location_t *locs) +{ + gcc_assert (num > 1); + gcc_assert (locs); + + location_t key_loc = get_key_loc (locs[0]); + + string_concat *concat + = new (ggc_alloc <string_concat> ()) string_concat (num, locs); + m_table->put (key_loc, concat); +} + +/* Determine if LOC was the location of the the initial token of a + concatenation of string literal tokens. + If so, *OUT_NUM is written to with the number of tokens, and + *OUT_LOCS with the location of an array of locations of the + tokens, and return true. *OUT_LOCS is a borrowed pointer to + storage owned by the string_concat_db. + Otherwise, return false. */ + +bool +string_concat_db::get_string_concatenation (location_t loc, + int *out_num, + location_t **out_locs) +{ + gcc_assert (out_num); + gcc_assert (out_locs); + + location_t key_loc = get_key_loc (loc); + + string_concat **concat = m_table->get (key_loc); + if (!concat) + return false; + + *out_num = (*concat)->m_num; + *out_locs =(*concat)->m_locs; + return true; +} + +/* Internal function. Canonicalize LOC into a form suitable for + use as a key within the database, stripping away macro expansion, + ad-hoc information, and range information, using the location of + the start of LOC within an ordinary linemap. */ + +location_t +string_concat_db::get_key_loc (location_t loc) +{ + loc = linemap_resolve_location (line_table, loc, LRK_SPELLING_LOCATION, + NULL); + + loc = get_range_from_loc (line_table, loc).m_start; + + return loc; +} + +/* Helper class for use within get_substring_ranges_for_loc. + An vec of cpp_string with responsibility for releasing all of the + str->text for each str in the vector. */ + +class auto_cpp_string_vec : public auto_vec <cpp_string> +{ + public: + auto_cpp_string_vec (int alloc) + : auto_vec <cpp_string> (alloc) {} + + ~auto_cpp_string_vec () + { + /* Clean up the copies within this vec. */ + int i; + cpp_string *str; + FOR_EACH_VEC_ELT (*this, i, str) + free (const_cast <unsigned char *> (str->text)); + } +}; + +/* Attempt to populate RANGES with source location information on the + individual characters within the string literal found at STRLOC. + If CONCATS is non-NULL, then any string literals that the token at + STRLOC was concatenated with are also added to RANGES. + + Return NULL if successful, or an error message if any errors occurred (in + which case RANGES may be only partially populated and should not + be used). + + This is implemented by re-parsing the relevant source line(s). */ + +static const char * +get_substring_ranges_for_loc (cpp_reader *pfile, + string_concat_db *concats, + location_t strloc, + enum cpp_ttype type, + cpp_substring_ranges &ranges) +{ + gcc_assert (pfile); + + if (strloc == UNKNOWN_LOCATION) + return "unknown location"; + + /* If string concatenation has occurred at STRLOC, get the locations + of all of the literal tokens making up the compound string. + Otherwise, just use STRLOC. */ + int num_locs = 1; + location_t *strlocs = &strloc; + if (concats) + concats->get_string_concatenation (strloc, &num_locs, &strlocs); + + auto_cpp_string_vec strs (num_locs); + auto_vec <cpp_string_location_reader> loc_readers (num_locs); + for (int i = 0; i < num_locs; i++) + { + /* Get range of strloc. We will use it to locate the start and finish + of the literal token within the line. */ + source_range src_range = get_range_from_loc (line_table, strlocs[i]); + + if (src_range.m_start >= LINEMAPS_MACRO_LOWEST_LOCATION (line_table)) + /* If the string is within a macro expansion, we can't get at the + end location. */ + return "macro expansion"; + + if (src_range.m_start >= LINE_MAP_MAX_LOCATION_WITH_COLS) + /* If so, we can't reliably determine where the token started within + its line. */ + return "range starts after LINE_MAP_MAX_LOCATION_WITH_COLS"; + + if (src_range.m_finish >= LINE_MAP_MAX_LOCATION_WITH_COLS) + /* If so, we can't reliably determine where the token finished within + its line. */ + return "range ends after LINE_MAP_MAX_LOCATION_WITH_COLS"; + + expanded_location start + = expand_location_to_spelling_point (src_range.m_start); + expanded_location finish + = expand_location_to_spelling_point (src_range.m_finish); + if (start.file != finish.file) + return "range endpoints are in different files"; + if (start.line != finish.line) + return "range endpoints are on different lines"; + if (start.column > finish.column) + return "range endpoints are reversed"; + + int line_width; + const char *line = location_get_source_line (start.file, start.line, + &line_width); + if (line == NULL) + return "unable to read source line"; + + /* Determine the location of the literal (including quotes + and leading prefix chars, such as the 'u' in a u"" + token). */ + const char *literal = line + start.column - 1; + int literal_length = finish.column - start.column + 1; + + gcc_assert (line_width >= (start.column - 1 + literal_length)); + cpp_string from; + from.len = literal_length; + /* Make a copy of the literal, to avoid having to rely on + the lifetime of the copy of the line within the cache. + This will be released by the auto_cpp_string_vec dtor. */ + from.text = XDUPVEC (unsigned char, literal, literal_length); + strs.safe_push (from); + + /* For very long lines, a new linemap could have started + halfway through the token. + Ensure that the loc_reader uses the linemap of the + *end* of the token for its start location. */ + const line_map_ordinary *final_ord_map; + linemap_resolve_location (line_table, src_range.m_finish, + LRK_MACRO_EXPANSION_POINT, &final_ord_map); + location_t start_loc + = linemap_position_for_line_and_column (line_table, final_ord_map, + start.line, start.column); + + cpp_string_location_reader loc_reader (start_loc, line_table); + loc_readers.safe_push (loc_reader); + } + + /* Rerun cpp_interpret_string, or rather, a modified version of it. */ + const char *err = cpp_interpret_string_ranges (pfile, strs.address (), + loc_readers.address (), + num_locs, &ranges, type); + if (err) + return err; + + /* Success: "ranges" should now contain information on the string. */ + return NULL; +} + +/* Attempt to populate *OUT_RANGE with source location information on the + range of given characters within the string literal found at STRLOC. + START_IDX and END_IDX refer to offsets within the execution character + set. + If CONCATS is non-NULL, then any string literals that the token at + STRLOC was concatenated with are also considered. + + This is implemented by re-parsing the relevant source line(s). + + Return NULL if successful, or an error message if any errors occurred. + Error messages are intended for GCC developers (to help debugging) rather + than for end-users. */ + +const char * +get_source_range_for_substring (cpp_reader *pfile, + string_concat_db *concats, + location_t strloc, + enum cpp_ttype type, + int start_idx, int end_idx, + source_range *out_range) +{ + gcc_checking_assert (start_idx >= 0); + gcc_checking_assert (end_idx >= 0); + gcc_assert (out_range); + + cpp_substring_ranges ranges; + const char *err + = get_substring_ranges_for_loc (pfile, concats, strloc, type, ranges); + if (err) + return err; + + if (start_idx >= ranges.get_num_ranges ()) + return "start_idx out of range"; + if (end_idx >= ranges.get_num_ranges ()) + return "end_idx out of range"; + + out_range->m_start = ranges.get_range (start_idx).m_start; + out_range->m_finish = ranges.get_range (end_idx).m_finish; + return NULL; +} + +/* As get_source_range_for_substring, but write to *OUT the number + of ranges that are available. */ + +const char * +get_num_source_ranges_for_substring (cpp_reader *pfile, + string_concat_db *concats, + location_t strloc, + enum cpp_ttype type, + int *out) +{ + gcc_assert (out); + + cpp_substring_ranges ranges; + const char *err + = get_substring_ranges_for_loc (pfile, concats, strloc, type, ranges); + + if (err) + return err; + + *out = ranges.get_num_ranges (); + return NULL; +} + #if CHECKING_P namespace selftest { @@ -1541,6 +1814,1259 @@ test_lexer (const line_table_case &case_) cpp_destroy (parser); } +/* Forward decls. */ + +struct lexer_test; +class lexer_test_options; + +/* A class for specifying options of a lexer_test. + The "apply" vfunc is called during the lexer_test constructor. */ + +class lexer_test_options +{ + public: + virtual void apply (lexer_test &) = 0; +}; + +/* A struct for writing lexer tests. */ + +struct lexer_test +{ + lexer_test (const line_table_case &case_, const char *content, + lexer_test_options *options); + ~lexer_test (); + + const cpp_token *get_token (); + + temp_source_file m_tempfile; + temp_line_table m_tmp_lt; + cpp_reader *m_parser; + string_concat_db m_concats; +}; + +/* Use an EBCDIC encoding for the execution charset, specifically + IBM1047-encoded (aka "EBCDIC 1047", or "Code page 1047"). + + This exercises iconv integration within libcpp. + Not every build of iconv supports the given charset, + so we need to flag this error and handle it gracefully. */ + +class ebcdic_execution_charset : public lexer_test_options +{ + public: + ebcdic_execution_charset () : m_num_iconv_errors (0) + { + gcc_assert (s_singleton == NULL); + s_singleton = this; + } + ~ebcdic_execution_charset () + { + gcc_assert (s_singleton == this); + s_singleton = NULL; + } + + void apply (lexer_test &test) FINAL OVERRIDE + { + cpp_options *cpp_opts = cpp_get_options (test.m_parser); + cpp_opts->narrow_charset = "IBM1047"; + + cpp_callbacks *callbacks = cpp_get_callbacks (test.m_parser); + callbacks->error = on_error; + } + + static bool on_error (cpp_reader *pfile ATTRIBUTE_UNUSED, + int level ATTRIBUTE_UNUSED, + int reason ATTRIBUTE_UNUSED, + rich_location *richloc ATTRIBUTE_UNUSED, + const char *msgid, va_list *ap ATTRIBUTE_UNUSED) + ATTRIBUTE_FPTR_PRINTF(5,0) + { + gcc_assert (s_singleton); + /* Detect and record errors emitted by libcpp/charset.c:init_iconv_desc + when the local iconv build doesn't support the conversion. */ + if (strstr (msgid, "not supported by iconv")) + { + s_singleton->m_num_iconv_errors++; + return true; + } + + /* Otherwise, we have an unexpected error. */ + abort (); + } + + bool iconv_errors_occurred_p () const { return m_num_iconv_errors > 0; } + + private: + static ebcdic_execution_charset *s_singleton; + int m_num_iconv_errors; +}; + +ebcdic_execution_charset *ebcdic_execution_charset::s_singleton; + +/* Constructor. Override line_table with a new instance based on CASE_, + and write CONTENT to a tempfile. Create a cpp_reader, and use it to + start parsing the tempfile. */ + +lexer_test::lexer_test (const line_table_case &case_, const char *content, + lexer_test_options *options) : + /* Create a tempfile and write the text to it. */ + m_tempfile (SELFTEST_LOCATION, ".c", content), + m_tmp_lt (case_), + m_parser (cpp_create_reader (CLK_GNUC99, NULL, line_table)), + m_concats () +{ + if (options) + options->apply (*this); + + cpp_init_iconv (m_parser); + + /* Parse the file. */ + const char *fname = cpp_read_main_file (m_parser, + m_tempfile.get_filename ()); + ASSERT_NE (fname, NULL); +} + +/* Destructor. Verify that the next token in m_parser is EOF. */ + +lexer_test::~lexer_test () +{ + location_t loc; + const cpp_token *tok; + + tok = cpp_get_token_with_location (m_parser, &loc); + ASSERT_NE (tok, NULL); + ASSERT_EQ (tok->type, CPP_EOF); + + cpp_finish (m_parser, NULL); + cpp_destroy (m_parser); +} + +/* Get the next token from m_parser. */ + +const cpp_token * +lexer_test::get_token () +{ + location_t loc; + const cpp_token *tok; + + tok = cpp_get_token_with_location (m_parser, &loc); + ASSERT_NE (tok, NULL); + return tok; +} + +/* Verify that locations within string literals are correctly handled. */ + +/* Verify get_source_range_for_substring for token(s) at STRLOC, + using the string concatenation database for TEST. + + Assert that the character at index IDX is on EXPECTED_LINE, + and that it begins at column EXPECTED_START_COL and ends at + EXPECTED_FINISH_COL (unless the locations are beyond + LINE_MAP_MAX_LOCATION_WITH_COLS, in which case don't check their + columns). */ + +static void +assert_char_at_range (const location &loc, + lexer_test& test, + location_t strloc, enum cpp_ttype type, int idx, + int expected_line, int expected_start_col, + int expected_finish_col) +{ + cpp_reader *pfile = test.m_parser; + string_concat_db *concats = &test.m_concats; + + source_range actual_range; + const char *err + = get_source_range_for_substring (pfile, concats, strloc, type, + idx, idx, &actual_range); + if (should_have_column_data_p (strloc)) + ASSERT_EQ_AT (loc, NULL, err); + else + { + ASSERT_STREQ_AT (loc, + "range starts after LINE_MAP_MAX_LOCATION_WITH_COLS", + err); + return; + } + + int actual_start_line = LOCATION_LINE (actual_range.m_start); + ASSERT_EQ_AT (loc, expected_line, actual_start_line); + int actual_finish_line = LOCATION_LINE (actual_range.m_finish); + ASSERT_EQ_AT (loc, expected_line, actual_finish_line); + + if (should_have_column_data_p (actual_range.m_start)) + { + int actual_start_col = LOCATION_COLUMN (actual_range.m_start); + ASSERT_EQ_AT (loc, expected_start_col, actual_start_col); + } + if (should_have_column_data_p (actual_range.m_finish)) + { + int actual_finish_col = LOCATION_COLUMN (actual_range.m_finish); + ASSERT_EQ_AT (loc, expected_finish_col, actual_finish_col); + } +} + +/* Macro for calling assert_char_at_range, supplying SELFTEST_LOCATION for + the effective location of any errors. */ + +#define ASSERT_CHAR_AT_RANGE(LEXER_TEST, STRLOC, TYPE, IDX, EXPECTED_LINE, \ + EXPECTED_START_COL, EXPECTED_FINISH_COL) \ + assert_char_at_range (SELFTEST_LOCATION, (LEXER_TEST), (STRLOC), (TYPE), \ + (IDX), (EXPECTED_LINE), (EXPECTED_START_COL), \ + (EXPECTED_FINISH_COL)) + +/* Verify get_num_source_ranges_for_substring for token(s) at STRLOC, + using the string concatenation database for TEST. + + Assert that the token(s) at STRLOC contain EXPECTED_NUM_RANGES. */ + +static void +assert_num_substring_ranges (const location &loc, + lexer_test& test, + location_t strloc, + enum cpp_ttype type, + int expected_num_ranges) +{ + cpp_reader *pfile = test.m_parser; + string_concat_db *concats = &test.m_concats; + + int actual_num_ranges; + const char *err + = get_num_source_ranges_for_substring (pfile, concats, strloc, type, + &actual_num_ranges); + if (should_have_column_data_p (strloc)) + ASSERT_EQ_AT (loc, NULL, err); + else + { + ASSERT_STREQ_AT (loc, + "range starts after LINE_MAP_MAX_LOCATION_WITH_COLS", + err); + return; + } + ASSERT_EQ_AT (loc, expected_num_ranges, actual_num_ranges); +} + +/* Macro for calling assert_num_substring_ranges, supplying + SELFTEST_LOCATION for the effective location of any errors. */ + +#define ASSERT_NUM_SUBSTRING_RANGES(LEXER_TEST, STRLOC, TYPE, \ + EXPECTED_NUM_RANGES) \ + assert_num_substring_ranges (SELFTEST_LOCATION, (LEXER_TEST), (STRLOC), \ + (TYPE), (EXPECTED_NUM_RANGES)) + + +/* Verify that get_num_source_ranges_for_substring for token(s) at STRLOC + returns an error (using the string concatenation database for TEST). */ + +static void +assert_has_no_substring_ranges (const location &loc, + lexer_test& test, + location_t strloc, + enum cpp_ttype type, + const char *expected_err) +{ + cpp_reader *pfile = test.m_parser; + string_concat_db *concats = &test.m_concats; + cpp_substring_ranges ranges; + const char *actual_err + = get_substring_ranges_for_loc (pfile, concats, strloc, + type, ranges); + if (should_have_column_data_p (strloc)) + ASSERT_STREQ_AT (loc, expected_err, actual_err); + else + ASSERT_STREQ_AT (loc, + "range starts after LINE_MAP_MAX_LOCATION_WITH_COLS", + actual_err); +} + +#define ASSERT_HAS_NO_SUBSTRING_RANGES(LEXER_TEST, STRLOC, TYPE, ERR) \ + assert_has_no_substring_ranges (SELFTEST_LOCATION, (LEXER_TEST), \ + (STRLOC), (TYPE), (ERR)) + +/* Lex a simple string literal. Verify the substring location data, before + and after running cpp_interpret_string on it. */ + +static void +test_lexer_string_locations_simple (const line_table_case &case_) +{ + /* Digits 0-9 (with 0 at column 10), the simple way. + ....................000000000.11111111112.2222222223333333333 + ....................123456789.01234567890.1234567890123456789 + We add a trailing comment to ensure that we correctly locate + the end of the string literal token. */ + const char *content = " \"0123456789\" /* not a string */\n"; + lexer_test test (case_, content, NULL); + + /* Verify that we get the expected token back, with the correct + location information. */ + const cpp_token *tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_STRING); + ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "\"0123456789\""); + ASSERT_TOKEN_LOC_EQ (tok, test.m_tempfile.get_filename (), 1, 9, 20); + + /* At this point in lexing, the quote characters are treated as part of + the string (they are stripped off by cpp_interpret_string). */ + + ASSERT_EQ (tok->val.str.len, 12); + + /* Verify that cpp_interpret_string works. */ + cpp_string dst_string; + const enum cpp_ttype type = CPP_STRING; + bool result = cpp_interpret_string (test.m_parser, &tok->val.str, 1, + &dst_string, type); + ASSERT_TRUE (result); + ASSERT_STREQ ("0123456789", (const char *)dst_string.text); + free (const_cast <unsigned char *> (dst_string.text)); + + /* Verify ranges of individual characters. This no longer includes the + quotes. */ + for (int i = 0; i <= 9; i++) + ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, + 10 + i, 10 + i); + + ASSERT_NUM_SUBSTRING_RANGES (test, tok->src_loc, type, 10); +} + +/* As test_lexer_string_locations_simple, but use an EBCDIC execution + encoding. */ + +static void +test_lexer_string_locations_ebcdic (const line_table_case &case_) +{ + /* EBCDIC support requires iconv. */ + if (!HAVE_ICONV) + return; + + /* Digits 0-9 (with 0 at column 10), the simple way. + ....................000000000.11111111112.2222222223333333333 + ....................123456789.01234567890.1234567890123456789 + We add a trailing comment to ensure that we correctly locate + the end of the string literal token. */ + const char *content = " \"0123456789\" /* not a string */\n"; + ebcdic_execution_charset use_ebcdic; + lexer_test test (case_, content, &use_ebcdic); + + /* Verify that we get the expected token back, with the correct + location information. */ + const cpp_token *tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_STRING); + ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "\"0123456789\""); + ASSERT_TOKEN_LOC_EQ (tok, test.m_tempfile.get_filename (), 1, 9, 20); + + /* At this point in lexing, the quote characters are treated as part of + the string (they are stripped off by cpp_interpret_string). */ + + ASSERT_EQ (tok->val.str.len, 12); + + /* The remainder of the test requires an iconv implementation that + can convert from UTF-8 to the EBCDIC encoding requested above. */ + if (use_ebcdic.iconv_errors_occurred_p ()) + return; + + /* Verify that cpp_interpret_string works. */ + cpp_string dst_string; + const enum cpp_ttype type = CPP_STRING; + bool result = cpp_interpret_string (test.m_parser, &tok->val.str, 1, + &dst_string, type); + ASSERT_TRUE (result); + /* We should now have EBCDIC-encoded text, specifically + IBM1047-encoded (aka "EBCDIC 1047", or "Code page 1047"). + The digits 0-9 are encoded as 240-249 i.e. 0xf0-0xf9. */ + ASSERT_STREQ ("\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9", + (const char *)dst_string.text); + free (const_cast <unsigned char *> (dst_string.text)); + + /* Verify that we don't attempt to record substring location information + for such cases. */ + ASSERT_HAS_NO_SUBSTRING_RANGES + (test, tok->src_loc, type, + "execution character set != source character set"); +} + +/* Lex a string literal containing a hex-escaped character. + Verify the substring location data, before and after running + cpp_interpret_string on it. */ + +static void +test_lexer_string_locations_hex (const line_table_case &case_) +{ + /* Digits 0-9, expressing digit 5 in ASCII as "\x35" + and with a space in place of digit 6, to terminate the escaped + hex code. + ....................000000000.111111.11112222. + ....................123456789.012345.67890123. */ + const char *content = " \"01234\\x35 789\"\n"; + lexer_test test (case_, content, NULL); + + /* Verify that we get the expected token back, with the correct + location information. */ + const cpp_token *tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_STRING); + ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "\"01234\\x35 789\""); + ASSERT_TOKEN_LOC_EQ (tok, test.m_tempfile.get_filename (), 1, 9, 23); + + /* At this point in lexing, the quote characters are treated as part of + the string (they are stripped off by cpp_interpret_string). */ + ASSERT_EQ (tok->val.str.len, 15); + + /* Verify that cpp_interpret_string works. */ + cpp_string dst_string; + const enum cpp_ttype type = CPP_STRING; + bool result = cpp_interpret_string (test.m_parser, &tok->val.str, 1, + &dst_string, type); + ASSERT_TRUE (result); + ASSERT_STREQ ("012345 789", (const char *)dst_string.text); + free (const_cast <unsigned char *> (dst_string.text)); + + /* Verify ranges of individual characters. This no longer includes the + quotes. */ + for (int i = 0; i <= 4; i++) + ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, 10 + i, 10 + i); + ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, 5, 1, 15, 18); + for (int i = 6; i <= 9; i++) + ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, 13 + i, 13 + i); + + ASSERT_NUM_SUBSTRING_RANGES (test, tok->src_loc, type, 10); +} + +/* Lex a string literal containing an octal-escaped character. + Verify the substring location data after running cpp_interpret_string + on it. */ + +static void +test_lexer_string_locations_oct (const line_table_case &case_) +{ + /* Digits 0-9, expressing digit 5 in ASCII as "\065" + and with a space in place of digit 6, to terminate the escaped + octal code. + ....................000000000.111111.11112222.2222223333333333444 + ....................123456789.012345.67890123.4567890123456789012 */ + const char *content = " \"01234\\065 789\" /* not a string */\n"; + lexer_test test (case_, content, NULL); + + /* Verify that we get the expected token back, with the correct + location information. */ + const cpp_token *tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_STRING); + ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "\"01234\\065 789\""); + + /* Verify that cpp_interpret_string works. */ + cpp_string dst_string; + const enum cpp_ttype type = CPP_STRING; + bool result = cpp_interpret_string (test.m_parser, &tok->val.str, 1, + &dst_string, type); + ASSERT_TRUE (result); + ASSERT_STREQ ("012345 789", (const char *)dst_string.text); + free (const_cast <unsigned char *> (dst_string.text)); + + /* Verify ranges of individual characters. This no longer includes the + quotes. */ + for (int i = 0; i < 5; i++) + ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, 10 + i, 10 + i); + ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, 5, 1, 15, 18); + for (int i = 6; i <= 9; i++) + ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, 13 + i, 13 + i); + + ASSERT_NUM_SUBSTRING_RANGES (test, tok->src_loc, type, 10); +} + +/* Test of string literal containing letter escapes. */ + +static void +test_lexer_string_locations_letter_escape_1 (const line_table_case &case_) +{ + /* The string "\tfoo\\\nbar" i.e. tab, "foo", backslash, newline, bar. + .....................000000000.1.11111.1.1.11222.22222223333333 + .....................123456789.0.12345.6.7.89012.34567890123456. */ + const char *content = (" \"\\tfoo\\\\\\nbar\" /* non-str */\n"); + lexer_test test (case_, content, NULL); + + /* Verify that we get the expected tokens back. */ + const cpp_token *tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_STRING); + ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "\"\\tfoo\\\\\\nbar\""); + + /* Verify ranges of individual characters. */ + /* "\t". */ + ASSERT_CHAR_AT_RANGE (test, tok->src_loc, CPP_STRING, + 0, 1, 10, 11); + /* "foo". */ + for (int i = 1; i <= 3; i++) + ASSERT_CHAR_AT_RANGE (test, tok->src_loc, CPP_STRING, + i, 1, 11 + i, 11 + i); + /* "\\" and "\n". */ + ASSERT_CHAR_AT_RANGE (test, tok->src_loc, CPP_STRING, + 4, 1, 15, 16); + ASSERT_CHAR_AT_RANGE (test, tok->src_loc, CPP_STRING, + 5, 1, 17, 18); + + /* "bar". */ + for (int i = 6; i <= 8; i++) + ASSERT_CHAR_AT_RANGE (test, tok->src_loc, CPP_STRING, + i, 1, 13 + i, 13 + i); + + ASSERT_NUM_SUBSTRING_RANGES (test, tok->src_loc, CPP_STRING, 9); +} + +/* Another test of a string literal containing a letter escape. + Based on string seen in + printf ("%-%\n"); + in gcc.dg/format/c90-printf-1.c. */ + +static void +test_lexer_string_locations_letter_escape_2 (const line_table_case &case_) +{ + /* .....................000000000.1111.11.1111.22222222223. + .....................123456789.0123.45.6789.01234567890. */ + const char *content = (" \"%-%\\n\" /* non-str */\n"); + lexer_test test (case_, content, NULL); + + /* Verify that we get the expected tokens back. */ + const cpp_token *tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_STRING); + ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "\"%-%\\n\""); + + /* Verify ranges of individual characters. */ + /* "%-%". */ + for (int i = 0; i < 3; i++) + ASSERT_CHAR_AT_RANGE (test, tok->src_loc, CPP_STRING, + i, 1, 10 + i, 10 + i); + /* "\n". */ + ASSERT_CHAR_AT_RANGE (test, tok->src_loc, CPP_STRING, + 3, 1, 13, 14); + + ASSERT_NUM_SUBSTRING_RANGES (test, tok->src_loc, CPP_STRING, 4); +} + +/* Lex a string literal containing UCN 4 characters. + Verify the substring location data after running cpp_interpret_string + on it. */ + +static void +test_lexer_string_locations_ucn4 (const line_table_case &case_) +{ + /* Digits 0-9, expressing digits 5 and 6 as Roman numerals expressed + as UCN 4. + ....................000000000.111111.111122.222222223.33333333344444 + ....................123456789.012345.678901.234567890.12345678901234 */ + const char *content = " \"01234\\u2174\\u2175789\" /* non-str */\n"; + lexer_test test (case_, content, NULL); + + /* Verify that we get the expected token back, with the correct + location information. */ + const cpp_token *tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_STRING); + ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "\"01234\\u2174\\u2175789\""); + + /* Verify that cpp_interpret_string works. + The string should be encoded in the execution character + set. Assuming that that is UTF-8, we should have the following: + ----------- ---- ----- ------- ---------------- + Byte offset Byte Octal Unicode Source Column(s) + ----------- ---- ----- ------- ---------------- + 0 0x30 '0' 10 + 1 0x31 '1' 11 + 2 0x32 '2' 12 + 3 0x33 '3' 13 + 4 0x34 '4' 14 + 5 0xE2 \342 U+2174 15-20 + 6 0x85 \205 (cont) 15-20 + 7 0xB4 \264 (cont) 15-20 + 8 0xE2 \342 U+2175 21-26 + 9 0x85 \205 (cont) 21-26 + 10 0xB5 \265 (cont) 21-26 + 11 0x37 '7' 27 + 12 0x38 '8' 28 + 13 0x39 '9' 29 + ----------- ---- ----- ------- ---------------. */ + + cpp_string dst_string; + const enum cpp_ttype type = CPP_STRING; + bool result = cpp_interpret_string (test.m_parser, &tok->val.str, 1, + &dst_string, type); + ASSERT_TRUE (result); + ASSERT_STREQ ("01234\342\205\264\342\205\265789", + (const char *)dst_string.text); + free (const_cast <unsigned char *> (dst_string.text)); + + /* Verify ranges of individual characters. This no longer includes the + quotes. + '01234'. */ + for (int i = 0; i <= 4; i++) + ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, 10 + i, 10 + i); + /* U+2174. */ + for (int i = 5; i <= 7; i++) + ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, 15, 20); + /* U+2175. */ + for (int i = 8; i <= 10; i++) + ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, 21, 26); + /* '789'. */ + for (int i = 11; i <= 13; i++) + ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, 16 + i, 16 + i); + + ASSERT_NUM_SUBSTRING_RANGES (test, tok->src_loc, type, 14); +} + +/* Lex a string literal containing UCN 8 characters. + Verify the substring location data after running cpp_interpret_string + on it. */ + +static void +test_lexer_string_locations_ucn8 (const line_table_case &case_) +{ + /* Digits 0-9, expressing digits 5 and 6 as Roman numerals as UCN 8. + ....................000000000.111111.1111222222.2222333333333.344444 + ....................123456789.012345.6789012345.6789012345678.901234 */ + const char *content = " \"01234\\U00002174\\U00002175789\" /* */\n"; + lexer_test test (case_, content, NULL); + + /* Verify that we get the expected token back, with the correct + location information. */ + const cpp_token *tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_STRING); + ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, + "\"01234\\U00002174\\U00002175789\""); + + /* Verify that cpp_interpret_string works. + The UTF-8 encoding of the string is identical to that from + the ucn4 testcase above; the only difference is the column + locations. */ + cpp_string dst_string; + const enum cpp_ttype type = CPP_STRING; + bool result = cpp_interpret_string (test.m_parser, &tok->val.str, 1, + &dst_string, type); + ASSERT_TRUE (result); + ASSERT_STREQ ("01234\342\205\264\342\205\265789", + (const char *)dst_string.text); + free (const_cast <unsigned char *> (dst_string.text)); + + /* Verify ranges of individual characters. This no longer includes the + quotes. + '01234'. */ + for (int i = 0; i <= 4; i++) + ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, 10 + i, 10 + i); + /* U+2174. */ + for (int i = 5; i <= 7; i++) + ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, 15, 24); + /* U+2175. */ + for (int i = 8; i <= 10; i++) + ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, 25, 34); + /* '789' at columns 35-37 */ + for (int i = 11; i <= 13; i++) + ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, 24 + i, 24 + i); + + ASSERT_NUM_SUBSTRING_RANGES (test, tok->src_loc, type, 14); +} + +/* Fetch a big-endian 32-bit value and convert to host endianness. */ + +static uint32_t +uint32_from_big_endian (const uint32_t *ptr_be_value) +{ + const unsigned char *buf = (const unsigned char *)ptr_be_value; + return (((uint32_t) buf[0] << 24) + | ((uint32_t) buf[1] << 16) + | ((uint32_t) buf[2] << 8) + | (uint32_t) buf[3]); +} + +/* Lex a wide string literal and verify that attempts to read substring + location data from it fail gracefully. */ + +static void +test_lexer_string_locations_wide_string (const line_table_case &case_) +{ + /* Digits 0-9. + ....................000000000.11111111112.22222222233333 + ....................123456789.01234567890.12345678901234 */ + const char *content = " L\"0123456789\" /* non-str */\n"; + lexer_test test (case_, content, NULL); + + /* Verify that we get the expected token back, with the correct + location information. */ + const cpp_token *tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_WSTRING); + ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "L\"0123456789\""); + + /* Verify that cpp_interpret_string works, using CPP_WSTRING. */ + cpp_string dst_string; + const enum cpp_ttype type = CPP_WSTRING; + bool result = cpp_interpret_string (test.m_parser, &tok->val.str, 1, + &dst_string, type); + ASSERT_TRUE (result); + /* The cpp_reader defaults to big-endian with + CHAR_BIT * sizeof (int) for the wchar_precision, so dst_string should + now be encoded as UTF-32BE. */ + const uint32_t *be32_chars = (const uint32_t *)dst_string.text; + ASSERT_EQ ('0', uint32_from_big_endian (&be32_chars[0])); + ASSERT_EQ ('5', uint32_from_big_endian (&be32_chars[5])); + ASSERT_EQ ('9', uint32_from_big_endian (&be32_chars[9])); + ASSERT_EQ (0, uint32_from_big_endian (&be32_chars[10])); + free (const_cast <unsigned char *> (dst_string.text)); + + /* We don't yet support generating substring location information + for L"" strings. */ + ASSERT_HAS_NO_SUBSTRING_RANGES + (test, tok->src_loc, type, + "execution character set != source character set"); +} + +/* Fetch a big-endian 16-bit value and convert to host endianness. */ + +static uint16_t +uint16_from_big_endian (const uint16_t *ptr_be_value) +{ + const unsigned char *buf = (const unsigned char *)ptr_be_value; + return ((uint16_t) buf[0] << 8) | (uint16_t) buf[1]; +} + +/* Lex a u"" string literal and verify that attempts to read substring + location data from it fail gracefully. */ + +static void +test_lexer_string_locations_string16 (const line_table_case &case_) +{ + /* Digits 0-9. + ....................000000000.11111111112.22222222233333 + ....................123456789.01234567890.12345678901234 */ + const char *content = " u\"0123456789\" /* non-str */\n"; + lexer_test test (case_, content, NULL); + + /* Verify that we get the expected token back, with the correct + location information. */ + const cpp_token *tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_STRING16); + ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "u\"0123456789\""); + + /* Verify that cpp_interpret_string works, using CPP_STRING16. */ + cpp_string dst_string; + const enum cpp_ttype type = CPP_STRING16; + bool result = cpp_interpret_string (test.m_parser, &tok->val.str, 1, + &dst_string, type); + ASSERT_TRUE (result); + + /* The cpp_reader defaults to big-endian, so dst_string should + now be encoded as UTF-16BE. */ + const uint16_t *be16_chars = (const uint16_t *)dst_string.text; + ASSERT_EQ ('0', uint16_from_big_endian (&be16_chars[0])); + ASSERT_EQ ('5', uint16_from_big_endian (&be16_chars[5])); + ASSERT_EQ ('9', uint16_from_big_endian (&be16_chars[9])); + ASSERT_EQ (0, uint16_from_big_endian (&be16_chars[10])); + free (const_cast <unsigned char *> (dst_string.text)); + + /* We don't yet support generating substring location information + for L"" strings. */ + ASSERT_HAS_NO_SUBSTRING_RANGES + (test, tok->src_loc, type, + "execution character set != source character set"); +} + +/* Lex a U"" string literal and verify that attempts to read substring + location data from it fail gracefully. */ + +static void +test_lexer_string_locations_string32 (const line_table_case &case_) +{ + /* Digits 0-9. + ....................000000000.11111111112.22222222233333 + ....................123456789.01234567890.12345678901234 */ + const char *content = " U\"0123456789\" /* non-str */\n"; + lexer_test test (case_, content, NULL); + + /* Verify that we get the expected token back, with the correct + location information. */ + const cpp_token *tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_STRING32); + ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "U\"0123456789\""); + + /* Verify that cpp_interpret_string works, using CPP_STRING32. */ + cpp_string dst_string; + const enum cpp_ttype type = CPP_STRING32; + bool result = cpp_interpret_string (test.m_parser, &tok->val.str, 1, + &dst_string, type); + ASSERT_TRUE (result); + + /* The cpp_reader defaults to big-endian, so dst_string should + now be encoded as UTF-32BE. */ + const uint32_t *be32_chars = (const uint32_t *)dst_string.text; + ASSERT_EQ ('0', uint32_from_big_endian (&be32_chars[0])); + ASSERT_EQ ('5', uint32_from_big_endian (&be32_chars[5])); + ASSERT_EQ ('9', uint32_from_big_endian (&be32_chars[9])); + ASSERT_EQ (0, uint32_from_big_endian (&be32_chars[10])); + free (const_cast <unsigned char *> (dst_string.text)); + + /* We don't yet support generating substring location information + for L"" strings. */ + ASSERT_HAS_NO_SUBSTRING_RANGES + (test, tok->src_loc, type, + "execution character set != source character set"); +} + +/* Lex a u8-string literal. + Verify the substring location data after running cpp_interpret_string + on it. */ + +static void +test_lexer_string_locations_u8 (const line_table_case &case_) +{ + /* Digits 0-9. + ....................000000000.11111111112.22222222233333 + ....................123456789.01234567890.12345678901234 */ + const char *content = " u8\"0123456789\" /* non-str */\n"; + lexer_test test (case_, content, NULL); + + /* Verify that we get the expected token back, with the correct + location information. */ + const cpp_token *tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_UTF8STRING); + ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "u8\"0123456789\""); + + /* Verify that cpp_interpret_string works. */ + cpp_string dst_string; + const enum cpp_ttype type = CPP_STRING; + bool result = cpp_interpret_string (test.m_parser, &tok->val.str, 1, + &dst_string, type); + ASSERT_TRUE (result); + ASSERT_STREQ ("0123456789", (const char *)dst_string.text); + free (const_cast <unsigned char *> (dst_string.text)); + + /* Verify ranges of individual characters. This no longer includes the + quotes. */ + for (int i = 0; i <= 9; i++) + ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, 10 + i, 10 + i); +} + +/* Lex a string literal containing UTF-8 source characters. + Verify the substring location data after running cpp_interpret_string + on it. */ + +static void +test_lexer_string_locations_utf8_source (const line_table_case &case_) +{ + /* This string literal is written out to the source file as UTF-8, + and is of the form "before mojibake after", where "mojibake" + is written as the following four unicode code points: + U+6587 CJK UNIFIED IDEOGRAPH-6587 + U+5B57 CJK UNIFIED IDEOGRAPH-5B57 + U+5316 CJK UNIFIED IDEOGRAPH-5316 + U+3051 HIRAGANA LETTER KE. + Each of these is 3 bytes wide when encoded in UTF-8, whereas the + "before" and "after" are 1 byte per unicode character. + + The numbering shown are "columns", which are *byte* numbers within + the line, rather than unicode character numbers. + + .................... 000000000.1111111. + .................... 123456789.0123456. */ + const char *content = (" \"before " + /* U+6587 CJK UNIFIED IDEOGRAPH-6587 + UTF-8: 0xE6 0x96 0x87 + C octal escaped UTF-8: \346\226\207 + "column" numbers: 17-19. */ + "\346\226\207" + + /* U+5B57 CJK UNIFIED IDEOGRAPH-5B57 + UTF-8: 0xE5 0xAD 0x97 + C octal escaped UTF-8: \345\255\227 + "column" numbers: 20-22. */ + "\345\255\227" + + /* U+5316 CJK UNIFIED IDEOGRAPH-5316 + UTF-8: 0xE5 0x8C 0x96 + C octal escaped UTF-8: \345\214\226 + "column" numbers: 23-25. */ + "\345\214\226" + + /* U+3051 HIRAGANA LETTER KE + UTF-8: 0xE3 0x81 0x91 + C octal escaped UTF-8: \343\201\221 + "column" numbers: 26-28. */ + "\343\201\221" + + /* column numbers 29 onwards + 2333333.33334444444444 + 9012345.67890123456789. */ + " after\" /* non-str */\n"); + lexer_test test (case_, content, NULL); + + /* Verify that we get the expected token back, with the correct + location information. */ + const cpp_token *tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_STRING); + ASSERT_TOKEN_AS_TEXT_EQ + (test.m_parser, tok, + "\"before \346\226\207\345\255\227\345\214\226\343\201\221 after\""); + + /* Verify that cpp_interpret_string works. */ + cpp_string dst_string; + const enum cpp_ttype type = CPP_STRING; + bool result = cpp_interpret_string (test.m_parser, &tok->val.str, 1, + &dst_string, type); + ASSERT_TRUE (result); + ASSERT_STREQ + ("before \346\226\207\345\255\227\345\214\226\343\201\221 after", + (const char *)dst_string.text); + free (const_cast <unsigned char *> (dst_string.text)); + + /* Verify ranges of individual characters. This no longer includes the + quotes. + Assuming that both source and execution encodings are UTF-8, we have + a run of 25 octets in each. */ + for (int i = 0; i < 25; i++) + ASSERT_CHAR_AT_RANGE (test, tok->src_loc, type, i, 1, 10 + i, 10 + i); + + ASSERT_NUM_SUBSTRING_RANGES (test, tok->src_loc, type, 25); +} + +/* Test of string literal concatenation. */ + +static void +test_lexer_string_locations_concatenation_1 (const line_table_case &case_) +{ + /* Digits 0-9. + .....................000000000.111111.11112222222222 + .....................123456789.012345.67890123456789. */ + const char *content = (" \"01234\" /* non-str */\n" + " \"56789\" /* non-str */\n"); + lexer_test test (case_, content, NULL); + + location_t input_locs[2]; + + /* Verify that we get the expected tokens back. */ + auto_vec <cpp_string> input_strings; + const cpp_token *tok_a = test.get_token (); + ASSERT_EQ (tok_a->type, CPP_STRING); + ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok_a, "\"01234\""); + input_strings.safe_push (tok_a->val.str); + input_locs[0] = tok_a->src_loc; + + const cpp_token *tok_b = test.get_token (); + ASSERT_EQ (tok_b->type, CPP_STRING); + ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok_b, "\"56789\""); + input_strings.safe_push (tok_b->val.str); + input_locs[1] = tok_b->src_loc; + + /* Verify that cpp_interpret_string works. */ + cpp_string dst_string; + const enum cpp_ttype type = CPP_STRING; + bool result = cpp_interpret_string (test.m_parser, + input_strings.address (), 2, + &dst_string, type); + ASSERT_TRUE (result); + ASSERT_STREQ ("0123456789", (const char *)dst_string.text); + free (const_cast <unsigned char *> (dst_string.text)); + + /* Simulate c-lex.c's lex_string in order to record concatenation. */ + test.m_concats.record_string_concatenation (2, input_locs); + + location_t initial_loc = input_locs[0]; + + for (int i = 0; i <= 4; i++) + ASSERT_CHAR_AT_RANGE (test, initial_loc, type, i, 1, 10 + i, 10 + i); + for (int i = 5; i <= 9; i++) + ASSERT_CHAR_AT_RANGE (test, initial_loc, type, i, 2, 5 + i, 5 + i); + + ASSERT_NUM_SUBSTRING_RANGES (test, initial_loc, type, 10); +} + +/* Another test of string literal concatenation. */ + +static void +test_lexer_string_locations_concatenation_2 (const line_table_case &case_) +{ + /* Digits 0-9. + .....................000000000.111.11111112222222 + .....................123456789.012.34567890123456. */ + const char *content = (" \"01\" /* non-str */\n" + " \"23\" /* non-str */\n" + " \"45\" /* non-str */\n" + " \"67\" /* non-str */\n" + " \"89\" /* non-str */\n"); + lexer_test test (case_, content, NULL); + + auto_vec <cpp_string> input_strings; + location_t input_locs[5]; + + /* Verify that we get the expected tokens back. */ + for (int i = 0; i < 5; i++) + { + const cpp_token *tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_STRING); + input_strings.safe_push (tok->val.str); + input_locs[i] = tok->src_loc; + } + + /* Verify that cpp_interpret_string works. */ + cpp_string dst_string; + const enum cpp_ttype type = CPP_STRING; + bool result = cpp_interpret_string (test.m_parser, + input_strings.address (), 5, + &dst_string, type); + ASSERT_TRUE (result); + ASSERT_STREQ ("0123456789", (const char *)dst_string.text); + free (const_cast <unsigned char *> (dst_string.text)); + + /* Simulate c-lex.c's lex_string in order to record concatenation. */ + test.m_concats.record_string_concatenation (5, input_locs); + + location_t initial_loc = input_locs[0]; + + /* Within ASSERT_CHAR_AT_RANGE (actually assert_char_at_range), we can + detect if the initial loc is after LINE_MAP_MAX_LOCATION_WITH_COLS + and expect get_source_range_for_substring to fail. + However, for a string concatenation test, we can have a case + where the initial string is fully before LINE_MAP_MAX_LOCATION_WITH_COLS, + but subsequent strings can be after it. + Attempting to detect this within assert_char_at_range + would overcomplicate the logic for the common test cases, so + we detect it here. */ + if (should_have_column_data_p (input_locs[0]) + && !should_have_column_data_p (input_locs[4])) + { + /* Verify that get_source_range_for_substring gracefully rejects + this case. */ + source_range actual_range; + const char *err + = get_source_range_for_substring (test.m_parser, &test.m_concats, + initial_loc, type, 0, 0, + &actual_range); + ASSERT_STREQ ("range starts after LINE_MAP_MAX_LOCATION_WITH_COLS", err); + return; + } + + for (int i = 0; i < 5; i++) + for (int j = 0; j < 2; j++) + ASSERT_CHAR_AT_RANGE (test, initial_loc, type, (i * 2) + j, + i + 1, 10 + j, 10 + j); + + ASSERT_NUM_SUBSTRING_RANGES (test, initial_loc, type, 10); +} + +/* Another test of string literal concatenation, this time combined with + various kinds of escaped characters. */ + +static void +test_lexer_string_locations_concatenation_3 (const line_table_case &case_) +{ + /* Digits 0-9, expressing digit 5 in ASCII as hex "\x35" + digit 6 in ASCII as octal "\066", concatenating multiple strings. */ + const char *content + /* .000000000.111111.111.1.2222.222.2.2233.333.3333.34444444444555 + .123456789.012345.678.9.0123.456.7.8901.234.5678.90123456789012. */ + = (" \"01234\" \"\\x35\" \"\\066\" \"789\" /* non-str */\n"); + lexer_test test (case_, content, NULL); + + auto_vec <cpp_string> input_strings; + location_t input_locs[4]; + + /* Verify that we get the expected tokens back. */ + for (int i = 0; i < 4; i++) + { + const cpp_token *tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_STRING); + input_strings.safe_push (tok->val.str); + input_locs[i] = tok->src_loc; + } + + /* Verify that cpp_interpret_string works. */ + cpp_string dst_string; + const enum cpp_ttype type = CPP_STRING; + bool result = cpp_interpret_string (test.m_parser, + input_strings.address (), 4, + &dst_string, type); + ASSERT_TRUE (result); + ASSERT_STREQ ("0123456789", (const char *)dst_string.text); + free (const_cast <unsigned char *> (dst_string.text)); + + /* Simulate c-lex.c's lex_string in order to record concatenation. */ + test.m_concats.record_string_concatenation (4, input_locs); + + location_t initial_loc = input_locs[0]; + + for (int i = 0; i <= 4; i++) + ASSERT_CHAR_AT_RANGE (test, initial_loc, type, i, 1, 10 + i, 10 + i); + ASSERT_CHAR_AT_RANGE (test, initial_loc, type, 5, 1, 19, 22); + ASSERT_CHAR_AT_RANGE (test, initial_loc, type, 6, 1, 27, 30); + for (int i = 7; i <= 9; i++) + ASSERT_CHAR_AT_RANGE (test, initial_loc, type, i, 1, 28 + i, 28 + i); + + ASSERT_NUM_SUBSTRING_RANGES (test, initial_loc, type, 10); +} + +/* Test of string literal in a macro. */ + +static void +test_lexer_string_locations_macro (const line_table_case &case_) +{ + /* Digits 0-9. + .....................0000000001111111111.22222222223. + .....................1234567890123456789.01234567890. */ + const char *content = ("#define MACRO \"0123456789\" /* non-str */\n" + " MACRO"); + lexer_test test (case_, content, NULL); + + /* Verify that we get the expected tokens back. */ + const cpp_token *tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_PADDING); + + tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_STRING); + ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "\"0123456789\""); + + /* Verify ranges of individual characters. We ought to + see columns within the macro definition. */ + for (int i = 0; i <= 9; i++) + ASSERT_CHAR_AT_RANGE (test, tok->src_loc, CPP_STRING, + i, 1, 20 + i, 20 + i); + + ASSERT_NUM_SUBSTRING_RANGES (test, tok->src_loc, CPP_STRING, 10); + + tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_PADDING); +} + +/* Test of stringification of a macro argument. */ + +static void +test_lexer_string_locations_stringified_macro_argument + (const line_table_case &case_) +{ + /* .....................000000000111111111122222222223. + .....................123456789012345678901234567890. */ + const char *content = ("#define MACRO(X) #X /* non-str */\n" + "MACRO(foo)\n"); + lexer_test test (case_, content, NULL); + + /* Verify that we get the expected token back. */ + const cpp_token *tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_PADDING); + + tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_STRING); + ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "\"foo\""); + + /* We don't support getting the location of a stringified macro + argument. Verify that it fails gracefully. */ + ASSERT_HAS_NO_SUBSTRING_RANGES (test, tok->src_loc, CPP_STRING, + "cpp_interpret_string_1 failed"); + + tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_PADDING); + + tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_PADDING); +} + +/* Ensure that we are fail gracefully if something attempts to pass + in a location that isn't a string literal token. Seen on this code: + + const char a[] = " %d "; + __builtin_printf (a, 0.5); + ^ + + when c-format.c erroneously used the indicated one-character + location as the format string location, leading to a read past the + end of a string buffer in cpp_interpret_string_1. */ + +static void +test_lexer_string_locations_non_string (const line_table_case &case_) +{ + /* .....................000000000111111111122222222223. + .....................123456789012345678901234567890. */ + const char *content = (" a\n"); + lexer_test test (case_, content, NULL); + + /* Verify that we get the expected token back. */ + const cpp_token *tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_NAME); + ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "a"); + + /* At this point, libcpp is attempting to interpret the name as a + string literal, despite it not starting with a quote. We don't detect + that, but we should at least fail gracefully. */ + ASSERT_HAS_NO_SUBSTRING_RANGES (test, tok->src_loc, CPP_STRING, + "cpp_interpret_string_1 failed"); +} + +/* Ensure that we can read substring information for a token which + starts in one linemap and ends in another . Adapted from + gcc.dg/cpp/pr69985.c. */ + +static void +test_lexer_string_locations_long_line (const line_table_case &case_) +{ + /* .....................000000.000111111111 + .....................123456.789012346789. */ + const char *content = ("/* A very long line, so that we start a new line map. */\n" + " \"0123456789012345678901234567890123456789" + "0123456789012345678901234567890123456789" + "0123456789012345678901234567890123456789" + "0123456789\"\n"); + + lexer_test test (case_, content, NULL); + + /* Verify that we get the expected token back. */ + const cpp_token *tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_STRING); + + if (!should_have_column_data_p (line_table->highest_location)) + return; + + /* Verify ranges of individual characters. */ + ASSERT_NUM_SUBSTRING_RANGES (test, tok->src_loc, CPP_STRING, 130); + for (int i = 0; i < 130; i++) + ASSERT_CHAR_AT_RANGE (test, tok->src_loc, CPP_STRING, + i, 2, 7 + i, 7 + i); +} + +/* Test of lexing char constants. */ + +static void +test_lexer_char_constants (const line_table_case &case_) +{ + /* Various char constants. + .....................0000000001111111111.22222222223. + .....................1234567890123456789.01234567890. */ + const char *content = (" 'a'\n" + " u'a'\n" + " U'a'\n" + " L'a'\n" + " 'abc'\n"); + lexer_test test (case_, content, NULL); + + /* Verify that we get the expected tokens back. */ + /* 'a'. */ + const cpp_token *tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_CHAR); + ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "'a'"); + + unsigned int chars_seen; + int unsignedp; + cppchar_t cc = cpp_interpret_charconst (test.m_parser, tok, + &chars_seen, &unsignedp); + ASSERT_EQ (cc, 'a'); + ASSERT_EQ (chars_seen, 1); + + /* u'a'. */ + tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_CHAR16); + ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "u'a'"); + + /* U'a'. */ + tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_CHAR32); + ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "U'a'"); + + /* L'a'. */ + tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_WCHAR); + ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "L'a'"); + + /* 'abc' (c-char-sequence). */ + tok = test.get_token (); + ASSERT_EQ (tok->type, CPP_CHAR); + ASSERT_TOKEN_AS_TEXT_EQ (test.m_parser, tok, "'abc'"); +} /* A table of interesting location_t values, giving one axis of our test matrix. */ @@ -1599,6 +3125,27 @@ input_c_tests () /* Run all tests for the given case within the test matrix. */ test_accessing_ordinary_linemaps (c); test_lexer (c); + test_lexer_string_locations_simple (c); + test_lexer_string_locations_ebcdic (c); + test_lexer_string_locations_hex (c); + test_lexer_string_locations_oct (c); + test_lexer_string_locations_letter_escape_1 (c); + test_lexer_string_locations_letter_escape_2 (c); + test_lexer_string_locations_ucn4 (c); + test_lexer_string_locations_ucn8 (c); + test_lexer_string_locations_wide_string (c); + test_lexer_string_locations_string16 (c); + test_lexer_string_locations_string32 (c); + test_lexer_string_locations_u8 (c); + test_lexer_string_locations_utf8_source (c); + test_lexer_string_locations_concatenation_1 (c); + test_lexer_string_locations_concatenation_2 (c); + test_lexer_string_locations_concatenation_3 (c); + test_lexer_string_locations_macro (c); + test_lexer_string_locations_stringified_macro_argument (c); + test_lexer_string_locations_non_string (c); + test_lexer_string_locations_long_line (c); + test_lexer_char_constants (c); num_cases_tested++; } |