static struct answer ** find_answer PARAMS ((cpp_hashnode *,
const struct answer *));
static void handle_assertion PARAMS ((cpp_reader *, const char *, int));
-static void do_file_change PARAMS ((cpp_reader *, enum cpp_fc_reason,
- const char *, unsigned int));
/* This is the table of directive handlers. It is ordered by
frequency of occurrence; the numbers at the end are directive
buffer->nominal_fname);
}
}
-
- cpp_make_system_header (pfile, sysp, sysp == 2);
+ buffer->sysp = sysp;
}
-
buffer->nominal_fname = fname;
}
else if (token.type != CPP_EOF)
/* Our line number is incremented after the directive is processed. */
buffer->lineno = new_lineno - 1;
-
- if (reason == FC_RENAME)
- {
- /* Special case for file "foo.i" with "# 1 foo.c" on first line. */
- if (! buffer->prev && pfile->directive_pos.line == 1)
- filename = 0;
- do_file_change (pfile, reason, filename, lineno);
- }
+ _cpp_do_file_change (pfile, reason, filename, lineno);
}
/* Arrange the file_change callback. */
-static void
-do_file_change (pfile, reason, from_file, from_lineno)
+void
+_cpp_do_file_change (pfile, reason, from_file, from_lineno)
cpp_reader *pfile;
enum cpp_fc_reason reason;
const char *from_file;
unsigned int from_lineno;
{
- if (pfile->cb.change_file)
+ if (pfile->cb.file_change)
{
cpp_file_change fc;
cpp_buffer *buffer = pfile->buffer;
fc.reason = reason;
- fc.from.filename = from_file;
- fc.from.lineno = from_lineno;
fc.to.filename = buffer->nominal_fname;
fc.to.lineno = buffer->lineno + 1;
fc.sysp = buffer->sysp;
fc.externc = CPP_OPTION (pfile, cplusplus) && buffer->sysp == 2;
- pfile->cb.change_file (pfile, &fc);
+
+ /* Caller doesn't need to handle FC_ENTER. */
+ if (reason == FC_ENTER)
+ {
+ if (buffer->prev)
+ {
+ from_file = buffer->prev->nominal_fname;
+ from_lineno = buffer->prev->lineno;
+ }
+ else
+ from_file = 0;
+ }
+ /* Special case for file "foo.i" with "# 1 foo.c" on first line. */
+ else if (reason == FC_RENAME && ! buffer->prev
+ && pfile->directive_pos.line == 1)
+ from_file = 0;
+
+ fc.from.filename = from_file;
+ fc.from.lineno = from_lineno;
+ pfile->cb.file_change (pfile, &fc);
}
}
run_directive (pfile, type, BUF_CL_OPTION, str, count);
}
-/* Push a new buffer on the buffer stack. Buffer can be NULL, but
- then LEN should be 0. Returns the new buffer; it doesn't fail. */
-
+/* Push a new buffer on the buffer stack. Returns the new buffer; it
+ doesn't fail. It does not generate a file change call back; that
+ is the responsibility of the caller. */
cpp_buffer *
cpp_push_buffer (pfile, buffer, len, type, filename)
cpp_reader *pfile;
new->line_base = new->buf = new->cur = buffer;
new->rlimit = buffer + len;
+ new->sysp = 0;
/* No read ahead or extra char initially. */
new->read_ahead = EOF;
new->prev = pfile->buffer;
new->pfile = pfile;
new->include_stack_listed = 0;
+ new->lineno = 1;
pfile->state.next_bol = 1;
pfile->buffer_stack_depth++;
pfile->buffer = new;
- if (type == BUF_FILE || type == BUF_FAKE)
- {
- const char *filename = 0;
- unsigned int lineno = 0;
-
- if (new->prev)
- {
- filename = new->prev->nominal_fname;
- lineno = new->prev->lineno;
- }
- new->lineno = 0;
- do_file_change (pfile, FC_ENTER, filename, lineno);
- }
-
- new->lineno = 1;
return new;
}
+/* If called from do_line, pops a single buffer. Otherwise pops all
+ buffers until a real file is reached. Generates appropriate
+ call-backs. */
cpp_buffer *
cpp_pop_buffer (pfile)
cpp_reader *pfile;
{
cpp_buffer *buffer;
struct if_stack *ifs;
- int in_do_line = pfile->directive == &dtable[T_LINE];
- do
+ for (;;)
{
buffer = pfile->buffer;
/* Walk back up the conditional stack till we reach its level at
"unterminated #%s", dtable[ifs->type].name);
if (buffer->type == BUF_FAKE)
- {
- if (!in_do_line)
- cpp_warning (pfile, "file \"%s\" entered but not left",
- buffer->nominal_fname);
-
- buffer->prev->cur = buffer->cur;
- }
+ buffer->prev->cur = buffer->cur;
else if (buffer->type == BUF_FILE)
_cpp_pop_file_buffer (pfile, buffer);
pfile->buffer = buffer->prev;
pfile->buffer_stack_depth--;
- if ((buffer->type == BUF_FILE || buffer->type == BUF_FAKE)
- && pfile->buffer)
- {
- do_file_change (pfile, FC_LEAVE, buffer->nominal_fname,
- buffer->lineno);
- pfile->buffer->include_stack_listed = 0;
- }
+ /* Callbacks only generated for faked or real files. */
+ if (buffer->type != BUF_FILE && buffer->type != BUF_FAKE)
+ break;
+
+ /* No callback for EOF of last file. */
+ if (!pfile->buffer)
+ break;
+
+ /* do_line does its own call backs. */
+ pfile->buffer->include_stack_listed = 0;
+ if (pfile->directive == &dtable[T_LINE])
+ break;
+
+ _cpp_do_file_change (pfile, FC_LEAVE, buffer->nominal_fname,
+ buffer->lineno);
+ if (pfile->buffer->type == BUF_FILE)
+ break;
+
+ cpp_warning (pfile, "file \"%s\" entered but not left",
+ buffer->nominal_fname);
}
- while (pfile->buffer && pfile->buffer->type == BUF_FAKE && !in_do_line);
obstack_free (pfile->buffer_ob, buffer);
return pfile->buffer;
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