/* Preprocess only, using cpplib.
Copyright (C) 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007,
- 2008 Free Software Foundation, Inc.
+ 2008, 2009 Free Software Foundation, Inc.
Written by Per Bothner, 1994-95.
This program is free software; you can redistribute it and/or modify it
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);
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);
+static void do_line_change (cpp_reader *, const cpp_token *,
+ source_location, int);
/* Callback routines for the parser. Most of these are active only
in specific modes. */
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 *);
cb->undef = cb_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. */
- print.src_line = -1;
+ 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. */
+ print.src_line = 1;
print.printed = 0;
print.prev = 0;
print.outf = out_stream;
scan_translation_unit (cpp_reader *pfile)
{
bool avoid_paste = false;
+ bool do_line_adjustments
+ = cpp_get_options (parse_in)->lang != CLK_ASM
+ && !flag_no_line_commands;
+ bool in_pragma = false;
print.source = NULL;
for (;;)
{
- const cpp_token *token = cpp_get_token (pfile);
+ source_location loc;
+ const cpp_token *token = cpp_get_token_with_location (pfile, &loc);
if (token->type == CPP_PADDING)
{
/* Subtle logic to output a space if and only if necessary. */
if (avoid_paste)
{
+ const struct line_map *map
+ = linemap_lookup (line_table, loc);
+ int src_line = SOURCE_LINE (map, loc);
+
if (print.source == NULL)
print.source = token;
- if (print.source->flags & PREV_WHITE
- || (print.prev
- && cpp_avoid_paste (pfile, print.prev, token))
- || (print.prev == NULL && token->type == CPP_HASH))
+
+ if (src_line != print.src_line
+ && do_line_adjustments
+ && !in_pragma)
+ {
+ do_line_change (pfile, token, loc, false);
+ putc (' ', print.outf);
+ }
+ else if (print.source->flags & PREV_WHITE
+ || (print.prev
+ && cpp_avoid_paste (pfile, print.prev, token))
+ || (print.prev == NULL && token->type == CPP_HASH))
putc (' ', print.outf);
}
else if (token->flags & PREV_WHITE)
- putc (' ', print.outf);
+ {
+ const struct line_map *map
+ = linemap_lookup (line_table, loc);
+ int src_line = SOURCE_LINE (map, loc);
+
+ if (src_line != print.src_line
+ && do_line_adjustments
+ && !in_pragma)
+ do_line_change (pfile, token, loc, false);
+ putc (' ', print.outf);
+ }
avoid_paste = false;
print.source = NULL;
else
fprintf (print.outf, "%s", name);
print.printed = 1;
+ in_pragma = true;
}
else if (token->type == CPP_PRAGMA_EOL)
- maybe_print_line (token->src_loc);
+ {
+ maybe_print_line (token->src_loc);
+ in_pragma = false;
+ }
else
cpp_output_token (token, print.outf);
}
}
-/* Called when a line of output is started. TOKEN is the first token
- of the line, and at end of file will be CPP_EOF. */
+/* Helper function for cb_line_change and scan_translation_unit. */
static void
-cb_line_change (cpp_reader *pfile, const cpp_token *token,
- int parsing_args)
+do_line_change (cpp_reader *pfile, const cpp_token *token,
+ source_location src_loc, int parsing_args)
{
- source_location src_loc = token->src_loc;
+ if (define_queue || undef_queue)
+ dump_queued_macros (pfile);
if (token->type == CPP_EOF || parsing_args)
return;
}
}
+/* Called when a line of output is started. TOKEN is the first token
+ of the line, and at end of file will be CPP_EOF. */
+static void
+cb_line_change (cpp_reader *pfile, const cpp_token *token,
+ int parsing_args)
+{
+ do_line_change (pfile, token, token->src_loc, parsing_args);
+}
+
static void
cb_ident (cpp_reader *pfile ATTRIBUTE_UNUSED, source_location line,
const cpp_string *str)
}
static void
+cb_used_define (cpp_reader *pfile, source_location line ATTRIBUTE_UNUSED,
+ cpp_hashnode *node)
+{
+ macro_queue *q;
+ if (node->flags & NODE_BUILTIN)
+ return;
+ 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)
if (map != NULL)
{
+ input_location = map->start_location;
if (print.first_time)
{
/* Avoid printing foo.i when the main file is foo.c. */
OSDN Git Service
