#include "cpphash.h"
#include "intl.h"
#include "obstack.h"
-#include "symcat.h"
/* Chained list of answers to an assertion. */
struct answer
unsigned long *));
static void do_diagnostic PARAMS ((cpp_reader *, enum error_type, int));
static cpp_hashnode *lex_macro_node PARAMS ((cpp_reader *));
+static void do_include_common PARAMS ((cpp_reader *, enum include_type));
static void do_pragma_once PARAMS ((cpp_reader *));
static void do_pragma_poison PARAMS ((cpp_reader *));
static void do_pragma_system_header PARAMS ((cpp_reader *));
D(ifndef, T_IFNDEF, KANDR, COND | IF_COND) /* 9675 */ \
D(undef, T_UNDEF, KANDR, IN_I) /* 4837 */ \
D(line, T_LINE, KANDR, IN_I) /* 2465 */ \
-D(elif, T_ELIF, KANDR, COND) /* 610 */ \
+D(elif, T_ELIF, STDC89, COND) /* 610 */ \
D(error, T_ERROR, STDC89, 0) /* 475 */ \
D(pragma, T_PRAGMA, STDC89, IN_I) /* 195 */ \
D(warning, T_WARNING, EXTENSION, 0) /* 22 */ \
#define D(n, tag, o, f) tag,
enum
{
- T_BAD_DIRECTIVE,
DIRECTIVE_TABLE
N_DIRECTIVES
};
/* If we are rescanning preprocessed input, only directives tagged
with IN_I are honored, and the warnings below are suppressed. */
- if (! CPP_OPTION (pfile, preprocessed) || dir->flags & IN_I)
+ if (CPP_OPTION (pfile, preprocessed))
+ {
+ /* Kluge alert. In order to be sure that code like this
+ #define HASH #
+ HASH define foo bar
+ does not cause '#define foo bar' to get executed when
+ compiled with -save-temps, we recognize directives in
+ -fpreprocessed mode only if the # is in column 1 and the
+ directive name starts in column 2. This output can only
+ be generated by the directive callbacks in cppmain.c (see
+ also the special case in scan_buffer). */
+ if (dir->flags & IN_I && !indented && !(dname.flags & PREV_WHITE))
+ (*dir->handler) (pfile);
+ /* That check misses '# 123' linemarkers. Let them through too. */
+ else if (dname.type == CPP_NUMBER)
+ (*dir->handler) (pfile);
+ else
+ {
+ /* We don't want to process this directive. Put back the
+ tokens so caller will see them (and issue an error,
+ probably). */
+ _cpp_push_token (pfile, &dname, &pfile->directive_pos);
+ skip = 0;
+ }
+ }
+ else
{
/* Traditionally, a directive is ignored unless its # is in
column 1. Therefore in code intended to work with K+R
conditional blocks. */
if (CPP_WTRADITIONAL (pfile))
{
- if (indented && dir->origin == KANDR)
+ if (dir == &dtable[T_ELIF])
+ cpp_warning (pfile,
+ "suggest not using #elif in traditional C");
+ else if (indented && dir->origin == KANDR)
cpp_warning (pfile,
"traditional C ignores #%s with the # indented",
dir->name);
else if (token.flags & NAMED_OP)
cpp_error (pfile,
"\"%s\" cannot be used as a macro name as it is an operator in C++",
- token.val.node->name);
+ NODE_NAME (token.val.node));
else
cpp_error (pfile, "macro names must be identifiers");
}
/* In Objective C, some keywords begin with '@', but general
identifiers do not, and you're not allowed to #define them. */
- if (node == pfile->spec_nodes.n_defined || node->name[0] == '@')
- cpp_error (pfile, "\"%s\" cannot be used as a macro name", node->name);
+ if (node == pfile->spec_nodes.n_defined || NODE_NAME (node)[0] == '@')
+ cpp_error (pfile, "\"%s\" cannot be used as a macro name",
+ NODE_NAME (node));
else if (!(node->flags & NODE_POISONED))
return node;
}
if (pfile->cb.undef)
(*pfile->cb.undef) (pfile, node);
- if (node->flags & NODE_BUILTIN)
- cpp_warning (pfile, "undefining \"%s\"", node->name);
+ if (node->flags & NODE_WARN)
+ cpp_warning (pfile, "undefining \"%s\"", NODE_NAME (node));
_cpp_free_definition (node);
}
cpp_error (pfile, "missing terminating > character");
else
{
- token_mem = _cpp_pool_alloc (&pfile->ident_pool, total_len);
+ token_mem = _cpp_pool_alloc (&pfile->ident_pool, total_len + 1);
memcpy (token_mem, buffer, total_len);
+ token_mem[total_len] = '\0';
header->type = CPP_HEADER_NAME;
header->flags &= ~PREV_WHITE;
return 0;
}
+/* Handle #include, #include_next and #import. */
static void
-do_include (pfile)
+do_include_common (pfile, type)
cpp_reader *pfile;
+ enum include_type type;
{
cpp_token header;
if (!parse_include (pfile, &header))
- _cpp_execute_include (pfile, &header, 0, 0);
+ {
+ /* 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;
+ }
+
+ _cpp_execute_include (pfile, &header, type);
+ }
+ }
}
static void
-do_import (pfile)
+do_include (pfile)
cpp_reader *pfile;
{
- cpp_token header;
+ do_include_common (pfile, IT_INCLUDE);
+}
+static void
+do_import (pfile)
+ cpp_reader *pfile;
+{
if (!pfile->import_warning && CPP_OPTION (pfile, warn_import))
{
pfile->import_warning = 1;
"#import is obsolete, use an #ifndef wrapper in the header file");
}
- if (!parse_include (pfile, &header))
- _cpp_execute_include (pfile, &header, 1, 0);
+ do_include_common (pfile, IT_IMPORT);
}
static void
do_include_next (pfile)
cpp_reader *pfile;
{
- cpp_token header;
-
- if (!parse_include (pfile, &header))
- _cpp_execute_include (pfile, &header, 0, 1);
+ do_include_common (pfile, IT_INCLUDE_NEXT);
}
/* Subroutine of do_line. Read possible flags after file name. LAST
cpp_get_token (pfile, &token);
if (token.type == CPP_STRING)
{
- char *fname;
- unsigned int len;
-
- /* FIXME: memory leak. */
- len = token.val.str.len;
- fname = xmalloc (len + 1);
- memcpy (fname, token.val.str.text, len);
- fname[len] = '\0';
-
- _cpp_simplify_pathname (fname);
+ const char *fname = (const char *) token.val.str.text;
/* Only accept flags for the # 55 form. */
if (! pfile->state.line_extension)
{
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->sysp != sysp)
cpp_warning (pfile, "header flags for \"%s\" have changed",
buffer->nominal_fname);
+#endif
}
}
buffer->sysp = sysp;
do_warning (pfile)
cpp_reader *pfile;
{
- do_diagnostic (pfile, WARNING, 1);
+ /* We want #warning diagnostics to be emitted in system headers too. */
+ do_diagnostic (pfile, WARNING_SYSHDR, 1);
}
/* Report program identification. */
{
const struct pragma_entry *p;
cpp_token tok;
- const cpp_hashnode *node;
- const U_CHAR *name;
- size_t len;
int drop = 0;
p = pfile->pragmas;
cpp_get_token (pfile, &tok);
if (tok.type == CPP_NAME)
{
- node = tok.val.node;
- name = node->name;
- len = node->length;
+ const cpp_hashnode *node = tok.val.node;
+ size_t len = NODE_LEN (node);
+
while (p)
{
- if (strlen (p->name) == len && !memcmp (p->name, name, len))
+ if (strlen (p->name) == len
+ && !memcmp (p->name, NODE_NAME (node), len))
{
if (p->isnspace)
{
continue;
if (hp->type == NT_MACRO)
- cpp_warning (pfile, "poisoning existing macro \"%s\"", hp->name);
+ cpp_warning (pfile, "poisoning existing macro \"%s\"", NODE_NAME (hp));
_cpp_free_definition (hp);
hp->flags |= NODE_POISONED | NODE_DIAGNOSTIC;
}
buffer->if_stack = ifs->next;
buffer->was_skipping = ifs->was_skipping;
- obstack_free (pfile->buffer_ob, ifs);
+ obstack_free (&pfile->buffer_ob, ifs);
}
check_eol (pfile);
struct if_stack *ifs;
cpp_buffer *buffer = pfile->buffer;
- ifs = xobnew (pfile->buffer_ob, struct if_stack);
+ ifs = xobnew (&pfile->buffer_ob, struct if_stack);
ifs->pos = pfile->directive_pos;
ifs->next = buffer->if_stack;
ifs->was_skipping = buffer->was_skipping;
cpp_error (pfile, "predicate must be an identifier");
else if (parse_answer (pfile, answerp, type) == 0)
{
- unsigned int len = predicate.val.node->length;
+ unsigned int len = NODE_LEN (predicate.val.node);
unsigned char *sym = alloca (len + 1);
/* Prefix '#' to get it out of macro namespace. */
sym[0] = '#';
- memcpy (sym + 1, predicate.val.node->name, len);
+ memcpy (sym + 1, NODE_NAME (predicate.val.node), len);
result = cpp_lookup (pfile, sym, len + 1);
}
{
if (*find_answer (node, new_answer))
{
- cpp_warning (pfile, "\"%s\" re-asserted", node->name + 1);
+ cpp_warning (pfile, "\"%s\" re-asserted", NODE_NAME (node) + 1);
return;
}
new_answer->next = node->value.answers;
enum cpp_buffer_type type;
const char *filename;
{
- cpp_buffer *new = xobnew (pfile->buffer_ob, cpp_buffer);
+ cpp_buffer *new = xobnew (&pfile->buffer_ob, cpp_buffer);
if (type == BUF_FAKE)
{
pfile->lexer_pos.output_line = 1;
}
- new->nominal_fname = filename;
+ if (*filename == '\0')
+ new->nominal_fname = _("<stdin>");
+ else
+ new->nominal_fname = filename;
new->type = type;
new->prev = pfile->buffer;
new->pfile = pfile;
buffer->nominal_fname);
}
- obstack_free (pfile->buffer_ob, buffer);
+ obstack_free (&pfile->buffer_ob, buffer);
return pfile->buffer;
}
-#define obstack_chunk_alloc xmalloc
-#define obstack_chunk_free free
void
-_cpp_init_stacks (pfile)
+_cpp_init_directives (pfile)
cpp_reader *pfile;
{
- int i;
+ unsigned int i;
cpp_hashnode *node;
- pfile->buffer_ob = xnew (struct obstack);
- obstack_init (pfile->buffer_ob);
-
/* Register the directives. */
- for (i = 1; i < N_DIRECTIVES; i++)
+ for (i = 0; i < (unsigned int) N_DIRECTIVES; i++)
{
- node = cpp_lookup (pfile, dtable[i - 1].name, dtable[i - 1].length);
- node->directive_index = i;
+ node = cpp_lookup (pfile, dtable[i].name, dtable[i].length);
+ node->directive_index = i + 1;
}
}
-
-void
-_cpp_cleanup_stacks (pfile)
- cpp_reader *pfile;
-{
- obstack_free (pfile->buffer_ob, 0);
- free (pfile->buffer_ob);
-}
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