instead of void, because some old compilers have trouble with
pointers to functions returning void. */
-/* Don't invoke CONCAT2 with any whitespace or K&R cc will fail. */
+/* Don't invoke CONCAT2 with any whitespace or K&R cc will fail. */
#define D(name, t, o, f) static void CONCAT2(do_,name) PARAMS ((cpp_reader *));
DIRECTIVE_TABLE
#undef D
};
#undef D
-/* Don't invoke CONCAT2 with any whitespace or K&R cc will fail. */
+/* Don't invoke CONCAT2 with any whitespace or K&R cc will fail. */
#define D(name, t, origin, flags) \
{ CONCAT2(do_,name), (const U_CHAR *) STRINGX(name), \
sizeof STRINGX(name) - 1, origin, flags },
#undef D
#undef DIRECTIVE_TABLE
+#define SEEN_EOL() (pfile->lexer_pos.output_line > pfile->line)
+
/* Skip any remaining tokens in a directive. */
static void
skip_rest_of_line (pfile)
_cpp_pop_context (pfile);
/* Sweep up all tokens remaining on the line. */
- pfile->state.prevent_expansion++;
- while (!pfile->state.next_bol)
+ while (! SEEN_EOL ())
_cpp_lex_token (pfile, &token);
- pfile->state.prevent_expansion--;
}
/* Ensure there are no stray tokens at the end of a directive. */
check_eol (pfile)
cpp_reader *pfile;
{
- if (!pfile->state.next_bol)
+ if (! SEEN_EOL ())
{
cpp_token token;
/* Some handlers need the position of the # for diagnostics. */
pfile->directive_pos = pfile->lexer_pos;
+ pfile->directive_line = pfile->line;
/* Don't save directive tokens for external clients. */
pfile->la_saved = pfile->la_write;
{
/* We don't skip for an assembler #. */
if (skip_line)
- skip_rest_of_line (pfile);
+ {
+ skip_rest_of_line (pfile);
+ /* "Accept" the newline now. */
+ pfile->line++;
+ }
/* Restore state. */
pfile->la_write = pfile->la_saved;
/* If we have a directive that is not an opening
conditional, invalidate any control macro. */
if (! (dir->flags & IF_COND))
- pfile->mi_state = MI_FAILED;
+ pfile->mi_valid = false;
(*dir->handler) (pfile);
}
cpp_token_as_text (pfile, &dname));
}
- end_directive (pfile, skip);
+ if (pfile->state.in_directive)
+ end_directive (pfile, skip);
return skip;
}
const char *buf;
size_t count;
{
- unsigned int output_line = pfile->lexer_pos.output_line;
cpp_buffer *buffer;
- buffer = cpp_push_buffer (pfile, (const U_CHAR *) buf, count, type, 0);
-
- if (dir_no == T_PRAGMA)
- {
- /* A kludge to avoid line markers for _Pragma. */
- pfile->lexer_pos.output_line = output_line;
- /* Avoid interpretation of directives in a _Pragma string. */
- pfile->state.next_bol = 0;
- }
-
+ buffer = cpp_push_buffer (pfile, (const U_CHAR *) buf, count, type, 0, 1);
start_directive (pfile);
pfile->state.prevent_expansion++;
pfile->directive = &dtable[dir_no];
pfile->state.prevent_expansion--;
check_eol (pfile);
end_directive (pfile, 1);
-
- cpp_pop_buffer (pfile);
+ _cpp_pop_buffer (pfile);
}
/* Checks for validity the macro name in #define, #undef, #ifdef and
{
if (_cpp_create_definition (pfile, node))
if (pfile->cb.define)
- (*pfile->cb.define) (pfile, node);
+ (*pfile->cb.define) (pfile, pfile->directive_line, node);
}
}
if (node && node->type == NT_MACRO)
{
if (pfile->cb.undef)
- (*pfile->cb.undef) (pfile, node);
+ (*pfile->cb.undef) (pfile, pfile->directive_line, node);
if (node->flags & NODE_WARN)
cpp_warning (pfile, "undefining \"%s\"", NODE_NAME (node));
cpp_reader *pfile;
cpp_token *header;
{
- int is_pragma = pfile->directive == &dtable[T_PRAGMA];
const unsigned char *dir;
- if (is_pragma)
+ if (pfile->directive == &dtable[T_PRAGMA])
dir = U"pragma dependency";
else
dir = pfile->directive->name;
return 1;
}
- if (!is_pragma)
- {
- check_eol (pfile);
- /* Get out of macro context, if we are. */
- skip_rest_of_line (pfile);
- if (pfile->cb.include)
- (*pfile->cb.include) (pfile, dir, header);
- }
-
return 0;
}
{
cpp_token header;
+ /* For #include_next, if this is the primary source file, warn and
+ use the normal search logic. */
+ if (type == IT_INCLUDE_NEXT && ! pfile->buffer->prev)
+ {
+ cpp_warning (pfile, "#include_next in primary source file");
+ type = IT_INCLUDE;
+ }
+ else if (type == IT_IMPORT && CPP_OPTION (pfile, warn_import))
+ {
+ CPP_OPTION (pfile, warn_import) = 0;
+ cpp_warning (pfile,
+ "#import is obsolete, use an #ifndef wrapper in the header file");
+ }
+
if (!parse_include (pfile, &header))
{
/* Prevent #include recursion. */
if (pfile->buffer_stack_depth >= CPP_STACK_MAX)
cpp_fatal (pfile, "#include nested too deeply");
- else if (pfile->context->prev)
- cpp_ice (pfile, "attempt to push file buffer with contexts stacked");
else
{
- /* For #include_next, if this is the primary source file,
- warn and use the normal search logic. */
- if (type == IT_INCLUDE_NEXT && ! pfile->buffer->prev)
- {
- cpp_warning (pfile, "#include_next in primary source file");
- type = IT_INCLUDE;
- }
+ check_eol (pfile);
+ /* Get out of macro context, if we are. */
+ end_directive (pfile, 1);
+ if (pfile->cb.include)
+ (*pfile->cb.include) (pfile, pfile->directive_line,
+ pfile->directive->name, &header);
_cpp_execute_include (pfile, &header, type);
}
do_import (pfile)
cpp_reader *pfile;
{
- if (!pfile->import_warning && CPP_OPTION (pfile, warn_import))
- {
- pfile->import_warning = 1;
- cpp_warning (pfile,
- "#import is obsolete, use an #ifndef wrapper in the header file");
- }
-
do_include_common (pfile, IT_IMPORT);
}
cpp_reader *pfile;
{
cpp_buffer *buffer = pfile->buffer;
- const char *filename = buffer->nominal_fname;
- unsigned int lineno = buffer->lineno;
- enum cpp_fc_reason reason = FC_RENAME;
+ enum lc_reason reason = LC_RENAME;
unsigned long new_lineno;
- unsigned int cap;
+ unsigned int cap, sysp = pfile->map->sysp;
cpp_token token;
/* C99 raised the minimum limit on #line numbers. */
return;
}
- if (CPP_PEDANTIC (pfile) && (new_lineno == 0 || new_lineno > cap))
+ if (CPP_PEDANTIC (pfile) && ! pfile->state.line_extension
+ && (new_lineno == 0 || new_lineno > cap))
cpp_pedwarn (pfile, "line number out of range");
cpp_get_token (pfile, &token);
if (token.type == CPP_STRING)
{
- const char *fname = (const char *) token.val.str.text;
+ buffer->nominal_fname = (const char *) token.val.str.text;
/* Only accept flags for the # 55 form. */
- if (! pfile->state.line_extension)
- check_eol (pfile);
- else
+ if (pfile->state.line_extension)
{
- int flag = 0, sysp = 0;
+ int flag;
- flag = read_flag (pfile, flag);
+ sysp = 0;
+ flag = read_flag (pfile, 0);
if (flag == 1)
{
- reason = FC_ENTER;
+ reason = LC_ENTER;
+ /* Fake an include for cpp_included (). */
+ _cpp_fake_include (pfile, buffer->nominal_fname);
flag = read_flag (pfile, flag);
}
else if (flag == 2)
{
- reason = FC_LEAVE;
+ reason = LC_LEAVE;
flag = read_flag (pfile, flag);
}
if (flag == 3)
sysp = 1;
flag = read_flag (pfile, flag);
if (flag == 4)
- sysp = 2, read_flag (pfile, flag);
- }
-
- if (reason == FC_ENTER)
- {
- /* Fake a buffer stack for diagnostics. */
- cpp_push_buffer (pfile, 0, 0, BUF_FAKE, fname);
- /* Fake an include for cpp_included. */
- _cpp_fake_include (pfile, fname);
- buffer = pfile->buffer;
+ sysp = 2;
}
- else if (reason == FC_LEAVE)
- {
- if (buffer->type != BUF_FAKE)
- cpp_warning (pfile, "file \"%s\" left but not entered",
- buffer->nominal_fname);
- else
- {
- cpp_pop_buffer (pfile);
- buffer = pfile->buffer;
-#ifdef ENABLE_CHECKING
- if (strcmp (buffer->nominal_fname, fname))
- cpp_warning (pfile, "expected to return to file \"%s\"",
- buffer->nominal_fname);
- if (buffer->lineno + 1 != new_lineno)
- cpp_warning (pfile, "expected to return to line number %u",
- buffer->lineno + 1);
- if (buffer->sysp != sysp)
- cpp_warning (pfile, "header flags for \"%s\" have changed",
- buffer->nominal_fname);
-#endif
- }
- }
- buffer->sysp = sysp;
}
- buffer->nominal_fname = fname;
+ check_eol (pfile);
}
else if (token.type != CPP_EOF)
{
return;
}
- /* Our line number is incremented after the directive is processed. */
- buffer->lineno = new_lineno - 1;
- _cpp_do_file_change (pfile, reason, filename, lineno);
+ end_directive (pfile, 1);
+ _cpp_do_file_change (pfile, reason, (const char *) buffer->nominal_fname,
+ new_lineno, sysp);
}
-/* Arrange the file_change callback. */
+/* Arrange the file_change callback. pfile->line has changed to
+ FILE_LINE of TO_FILE, for reason REASON. SYSP is 1 for a system
+ header, 2 for a sytem header that needs to be extern "C" protected,
+ and zero otherwise. */
void
-_cpp_do_file_change (pfile, reason, from_file, from_lineno)
+_cpp_do_file_change (pfile, reason, to_file, file_line, sysp)
cpp_reader *pfile;
- enum cpp_fc_reason reason;
- const char *from_file;
- unsigned int from_lineno;
+ enum lc_reason reason;
+ const char *to_file;
+ unsigned int file_line;
+ unsigned int sysp;
{
- if (pfile->cb.file_change)
- {
- cpp_file_change fc;
- cpp_buffer *buffer = pfile->buffer;
-
- fc.reason = reason;
- 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->map = add_line_map (&pfile->line_maps, reason, sysp,
+ pfile->line, to_file, file_line);
- /* 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);
- }
+ if (pfile->cb.file_change)
+ (*pfile->cb.file_change) (pfile, pfile->map);
}
/*
if (str.type != CPP_STRING)
cpp_error (pfile, "invalid #ident");
else if (pfile->cb.ident)
- (*pfile->cb.ident) (pfile, &str.val.str);
+ (*pfile->cb.ident) (pfile, pfile->directive_line, &str.val.str);
check_eol (pfile);
}
This implementation never macro-expands the text after #pragma. */
/* Sub-handlers for the pragmas needing treatment here.
- They return 1 if the token buffer is to be popped, 0 if not. */
+ They return 1 if the token buffer is to be popped, 0 if not. */
+typedef void (*pragma_cb) PARAMS ((cpp_reader *));
struct pragma_entry
{
struct pragma_entry *next;
size_t len;
int isnspace;
union {
- void (*handler) PARAMS ((cpp_reader *));
+ pragma_cb handler;
struct pragma_entry *space;
} u;
};
cpp_reader *pfile;
const char *space;
const char *name;
- void (*handler) PARAMS ((cpp_reader *));
+ pragma_cb handler;
{
struct pragma_entry **x, *new;
size_t len;
do_pragma (pfile)
cpp_reader *pfile;
{
+ pragma_cb handler = NULL;
const struct pragma_entry *p;
cpp_token tok;
- int drop = 0;
p = pfile->pragmas;
pfile->state.prevent_expansion++;
}
else
{
- (*p->u.handler) (pfile);
- drop = 1;
+ handler = p->u.handler;
break;
}
}
}
}
- cpp_stop_lookahead (pfile, drop);
+ cpp_stop_lookahead (pfile, handler != NULL);
pfile->state.prevent_expansion--;
- if (!drop && pfile->cb.def_pragma)
- (*pfile->cb.def_pragma) (pfile);
+ if (handler)
+ (*handler) (pfile);
+ else if (pfile->cb.def_pragma)
+ (*pfile->cb.def_pragma) (pfile, pfile->directive_line);
}
static void
hp->flags |= NODE_POISONED | NODE_DIAGNOSTIC;
}
pfile->state.poisoned_ok = 0;
-
-#if 0 /* Doesn't quite work yet. */
- if (tok.type == CPP_EOF && pfile->cb.poison)
- (*pfile->cb.poison) (pfile);
-#endif
}
/* Mark the current header as a system header. This will suppress
if (buffer->prev == 0)
cpp_warning (pfile, "#pragma system_header ignored outside include file");
else
- cpp_make_system_header (pfile, 1, 0);
-
- check_eol (pfile);
+ {
+ check_eol (pfile);
+ end_directive (pfile, 1);
+ cpp_make_system_header (pfile, 1, 0);
+ }
}
/* Check the modified date of the current include file against a specified
cpp_token string;
unsigned char *buffer;
unsigned int len;
+ cpp_lexer_pos orig_pos;
+ orig_pos = pfile->lexer_pos;
if (get__Pragma_string (pfile, &string))
+ cpp_error (pfile, "_Pragma takes a parenthesized string literal");
+ else
{
- cpp_error (pfile, "_Pragma takes a parenthesized string literal");
- return;
+ buffer = destringize (&string.val.str, &len);
+ run_directive (pfile, T_PRAGMA, BUF_PRAGMA, (char *) buffer, len);
+ free ((PTR) buffer);
+ pfile->lexer_pos = orig_pos;
+ pfile->line = pfile->lexer_pos.line;
}
-
- buffer = destringize (&string.val.str, &len);
- run_directive (pfile, T_PRAGMA, BUF_PRAGMA, (char *) buffer, len);
- free ((PTR) buffer);
}
/* Just ignore #sccs, on systems where we define it at all. */
push_conditional (pfile, skip, T_IFNDEF, node);
}
-/* #if cooperates with parse_defined to handle multiple-include
- optimisations. If macro expansions or identifiers appear in the
- expression, we cannot treat it as a controlling conditional, since
- their values could change in the future. */
+/* _cpp_parse_expr puts a macro in a "#if !defined ()" expression in
+ pfile->mi_ind_cmacro so we can handle multiple-include
+ optimisations. If macro expansion occurs in the expression, we
+ cannot treat it as a controlling conditional, since the expansion
+ could change in the future. That is handled by cpp_get_token. */
static void
do_if (pfile)
cpp_reader *pfile;
{
int skip = 1;
- const cpp_hashnode *cmacro = 0;
if (! pfile->state.skipping)
- {
- /* Controlling macro of #if ! defined () */
- pfile->mi_ind_cmacro = 0;
- skip = _cpp_parse_expr (pfile) == 0;
- cmacro = pfile->mi_ind_cmacro;
- }
+ skip = _cpp_parse_expr (pfile) == 0;
- push_conditional (pfile, skip, T_IF, cmacro);
+ push_conditional (pfile, skip, T_IF, pfile->mi_ind_cmacro);
}
/* Flip skipping state if appropriate and continue without changing
/* If potential control macro, we go back outside again. */
if (ifs->next == 0 && ifs->mi_cmacro)
{
- pfile->mi_state = MI_OUTSIDE;
+ pfile->mi_valid = true;
pfile->mi_cmacro = ifs->mi_cmacro;
}
}
/* Push an if_stack entry and set pfile->state.skipping accordingly.
- If this is a #ifndef starting at the beginning of a file,
- CMACRO is the macro name tested by the #ifndef. */
+ If this is a #if or #ifndef, CMACRO is a potentially controlling
+ macro - we need to check here that we are at the top of the file. */
static void
push_conditional (pfile, skip, type, cmacro)
ifs->skip_elses = pfile->state.skipping || !skip;
ifs->was_skipping = pfile->state.skipping;
ifs->type = type;
- if (pfile->mi_state == MI_OUTSIDE && pfile->mi_cmacro == 0)
+ /* This condition is effectively a test for top-of-file. */
+ if (pfile->mi_valid && pfile->mi_cmacro == 0)
ifs->mi_cmacro = cmacro;
else
ifs->mi_cmacro = 0;
/* Process the string STR as if it appeared as the body of a #define.
If STR is just an identifier, define it with value 1.
If STR has anything after the identifier, then it should
- be identifier=definition. */
+ be identifier=definition. */
void
cpp_define (pfile, str)
run_directive (pfile, T_UNDEF, BUF_CL_OPTION, macro, strlen (macro));
}
-/* Process the string STR as if it appeared as the body of a #assert. */
+/* Process the string STR as if it appeared as the body of a #assert. */
void
cpp_assert (pfile, str)
cpp_reader *pfile;
handle_assertion (pfile, str, T_ASSERT);
}
-/* Process STR as if it appeared as the body of an #unassert. */
+/* Process STR as if it appeared as the body of an #unassert. */
void
cpp_unassert (pfile, str)
cpp_reader *pfile;
return &pfile->cb;
}
+/* The line map set. */
+const struct line_maps *
+cpp_get_line_maps (pfile)
+ cpp_reader *pfile;
+{
+ return &pfile->line_maps;
+}
+
/* Copy the given callbacks structure to our own. */
void
cpp_set_callbacks (pfile, cb)
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_push_buffer (pfile, buffer, len, type, filename, return_at_eof)
cpp_reader *pfile;
const U_CHAR *buffer;
size_t len;
enum cpp_buffer_type type;
const char *filename;
+ int return_at_eof;
{
cpp_buffer *new = xobnew (&pfile->buffer_ob, cpp_buffer);
- if (type == BUF_FAKE)
- {
- /* A copy of the current buffer, just with a new name and type. */
- memcpy (new, pfile->buffer, sizeof (cpp_buffer));
- new->type = BUF_FAKE;
- }
- else
- {
- if (type == BUF_BUILTIN)
- filename = _("<builtin>");
- else if (type == BUF_CL_OPTION)
- filename = _("<command line>");
- else if (type == BUF_PRAGMA)
- filename = "<_Pragma>";
+ if (type == BUF_BUILTIN)
+ filename = _("<builtin>");
+ else if (type == BUF_CL_OPTION)
+ filename = _("<command line>");
+ else if (type == BUF_PRAGMA)
+ filename = "<_Pragma>";
- /* Clears, amongst other things, if_stack and mi_cmacro. */
- memset (new, 0, sizeof (cpp_buffer));
+ /* Clears, amongst other things, if_stack and mi_cmacro. */
+ memset (new, 0, sizeof (cpp_buffer));
- new->line_base = new->buf = new->cur = buffer;
- new->rlimit = buffer + len;
- new->sysp = 0;
+ new->line_base = new->buf = new->cur = buffer;
+ new->rlimit = buffer + len;
- /* No read ahead or extra char initially. */
- new->read_ahead = EOF;
- new->extra_char = EOF;
+ /* No read ahead or extra char initially. */
+ new->read_ahead = EOF;
+ new->extra_char = EOF;
- /* Preprocessed files, builtins, _Pragma and command line
- options don't do trigraph and escaped newline processing. */
- new->from_stage3 = type != BUF_FILE || CPP_OPTION (pfile, preprocessed);
-
- pfile->lexer_pos.output_line = 1;
- }
+ /* Preprocessed files, builtins, _Pragma and command line
+ options don't do trigraph and escaped newline processing. */
+ new->from_stage3 = type != BUF_FILE || CPP_OPTION (pfile, preprocessed);
if (*filename == '\0')
new->nominal_fname = _("<stdin>");
new->type = type;
new->prev = pfile->buffer;
new->pfile = pfile;
- new->include_stack_listed = 0;
- new->lineno = 1;
+ new->return_at_eof = return_at_eof;
- pfile->state.next_bol = 1;
pfile->buffer_stack_depth++;
pfile->buffer = 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)
+void
+_cpp_pop_buffer (pfile)
cpp_reader *pfile;
{
- cpp_buffer *buffer;
+ cpp_buffer *buffer = pfile->buffer;
struct if_stack *ifs;
- for (;;)
- {
- buffer = pfile->buffer;
- /* Walk back up the conditional stack till we reach its level at
- entry to this file, issuing error messages. */
- for (ifs = buffer->if_stack; ifs; ifs = ifs->next)
- cpp_error_with_line (pfile, ifs->pos.line, ifs->pos.col,
- "unterminated #%s", dtable[ifs->type].name);
-
- if (buffer->type == BUF_FAKE)
- 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--;
-
- /* 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;
+ /* Walk back up the conditional stack till we reach its level at
+ entry to this file, issuing error messages. */
+ for (ifs = buffer->if_stack; ifs; ifs = ifs->next)
+ cpp_error_with_line (pfile, ifs->pos.line, ifs->pos.col,
+ "unterminated #%s", dtable[ifs->type].name);
- /* do_line does its own call backs. */
- pfile->buffer->include_stack_listed = 0;
- if (pfile->directive == &dtable[T_LINE])
- break;
+ /* Update the reader's buffer before _cpp_do_file_change. */
+ pfile->buffer = buffer->prev;
+ pfile->buffer_stack_depth--;
- _cpp_do_file_change (pfile, FC_LEAVE, buffer->nominal_fname,
- buffer->lineno);
- if (pfile->buffer->type == BUF_FILE)
- break;
+ if (buffer->type == BUF_FILE)
+ {
+ /* Callbacks are not generated for popping the main file. */
+ if (buffer->prev)
+ _cpp_do_file_change (pfile, LC_LEAVE, 0, 0, 0);
- cpp_warning (pfile, "file \"%s\" entered but not left",
- buffer->nominal_fname);
+ _cpp_pop_file_buffer (pfile, buffer);
}
obstack_free (&pfile->buffer_ob, buffer);
- return pfile->buffer;
+
+ /* The output line can fall out of sync if we missed the final
+ newline from the previous buffer, for example because of an
+ unterminated comment. Similarly, skipping needs to be cleared in
+ case of a missing #endif. */
+ pfile->lexer_pos.output_line = pfile->line;
+ pfile->state.skipping = 0;
}
void
OSDN Git Service
