diff options
Diffstat (limited to 'gcc/c-ppoutput.c')
| -rw-r--r-- | gcc/c-ppoutput.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/gcc/c-ppoutput.c b/gcc/c-ppoutput.c index 6a251fe995c..5fb41b20975 100644 --- a/gcc/c-ppoutput.c +++ b/gcc/c-ppoutput.c @@ -39,6 +39,17 @@ static struct bool first_time; /* pp_file_change hasn't been called yet. */ } print; +/* Defined and undefined macros being queued for output with -dU at + the next newline. */ +typedef struct macro_queue +{ + struct macro_queue *next; /* Next macro in the list. */ + char *macro; /* The name of the macro if not + defined, the full definition if + defined. */ +} macro_queue; +static macro_queue *define_queue, *undef_queue; + /* General output routines. */ static void scan_translation_unit (cpp_reader *); static void print_lines_directives_only (int, const void *, size_t); @@ -46,6 +57,7 @@ static void scan_translation_unit_directives_only (cpp_reader *); static void scan_translation_unit_trad (cpp_reader *); static void account_for_newlines (const unsigned char *, size_t); static int dump_macro (cpp_reader *, cpp_hashnode *, void *); +static void dump_queued_macros (cpp_reader *); static void print_line (source_location, const char *); static void maybe_print_line (source_location); @@ -55,6 +67,8 @@ static void maybe_print_line (source_location); static void cb_line_change (cpp_reader *, const cpp_token *, int); static void cb_define (cpp_reader *, source_location, cpp_hashnode *); static void cb_undef (cpp_reader *, source_location, cpp_hashnode *); +static void cb_used_define (cpp_reader *, source_location, cpp_hashnode *); +static void cb_used_undef (cpp_reader *, source_location, cpp_hashnode *); static void cb_include (cpp_reader *, source_location, const unsigned char *, const char *, int, const cpp_token **); static void cb_ident (cpp_reader *, source_location, const cpp_string *); @@ -125,6 +139,13 @@ init_pp_output (FILE *out_stream) cb->undef = cb_undef; } + if (flag_dump_macros == 'U') + { + cb->before_define = dump_queued_macros; + cb->used_define = cb_used_define; + cb->used_undef = cb_used_undef; + } + /* Initialize the print structure. Setting print.src_line to -1 here is a trick to guarantee that the first token of the file will cause a linemarker to be output by maybe_print_line. */ @@ -320,6 +341,9 @@ cb_line_change (cpp_reader *pfile, const cpp_token *token, { source_location src_loc = token->src_loc; + if (define_queue || undef_queue) + dump_queued_macros (pfile); + if (token->type == CPP_EOF || parsing_args) return; @@ -380,6 +404,68 @@ cb_undef (cpp_reader *pfile ATTRIBUTE_UNUSED, source_location line, } static void +cb_used_define (cpp_reader *pfile, source_location line ATTRIBUTE_UNUSED, + cpp_hashnode *node) +{ + macro_queue *q; + q = XNEW (macro_queue); + q->macro = xstrdup ((const char *) cpp_macro_definition (pfile, node)); + q->next = define_queue; + define_queue = q; +} + +static void +cb_used_undef (cpp_reader *pfile ATTRIBUTE_UNUSED, + source_location line ATTRIBUTE_UNUSED, + cpp_hashnode *node) +{ + macro_queue *q; + q = XNEW (macro_queue); + q->macro = xstrdup ((const char *) NODE_NAME (node)); + q->next = undef_queue; + undef_queue = q; +} + +static void +dump_queued_macros (cpp_reader *pfile ATTRIBUTE_UNUSED) +{ + macro_queue *q; + + /* End the previous line of text. */ + if (print.printed) + { + putc ('\n', print.outf); + print.src_line++; + print.printed = 0; + } + + for (q = define_queue; q;) + { + macro_queue *oq; + fputs ("#define ", print.outf); + fputs (q->macro, print.outf); + putc ('\n', print.outf); + print.src_line++; + oq = q; + q = q->next; + free (oq->macro); + free (oq); + } + define_queue = NULL; + for (q = undef_queue; q;) + { + macro_queue *oq; + fprintf (print.outf, "#undef %s\n", q->macro); + print.src_line++; + oq = q; + q = q->next; + free (oq->macro); + free (oq); + } + undef_queue = NULL; +} + +static void cb_include (cpp_reader *pfile ATTRIBUTE_UNUSED, source_location line, const unsigned char *dir, const char *header, int angle_brackets, const cpp_token **comments) |
