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glib/gobject/glib-genmarshal.c
Emmanuele Bassi 17a3c782db genmarshal: Always generate the prototypes in the body 
This way code that does not manually include the generated marshallers
header and wishes to build with `-Wmissing-prototypes` will not generate
a compiler warning.

https://bugzilla.gnome.org/show_bug.cgi?id=781755
2017-04-28 17:39:14 +01:00

1137 lines
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/* GLIB-GenMarshal - Marshaller generator for GObject library
* Copyright (C) 2000-2001 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <stdlib.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <glib/gstdio.h>
#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "GLib-Genmarshal"
#include <glib.h>
#include <glib/gprintf.h>
#ifdef G_OS_UNIX
#include <unistd.h>
#endif
#ifdef G_OS_WIN32
#include <io.h>
#endif
/* --- defines --- */
#define PRG_NAME "glib-genmarshal"
#define PKG_NAME "GLib"
#define PKG_HTTP_HOME "http://www.gtk.org"
/* --- typedefs & structures --- */
typedef struct
{
gchar *keyword; /* marhaller list keyword [MY_STRING] */
const gchar *sig_name; /* signature name [STRING] */
const gchar *ctype; /* C type name [gchar*] */
const gchar *promoted_ctype; /* promoted C type name [gchar*] */
const gchar *getter; /* value getter function [g_value_get_string] */
const gchar *box; /* value box function [g_strdup] */
const gchar *unbox; /* value unbox function [g_free] */
gboolean box_ignores_static; /* Wether the box/unbox functions ignore the static_scope */
gboolean box_takes_type; /* Wether the box/unbox functions take a type arg */
} InArgument;
typedef struct
{
gchar *keyword; /* marhaller list keyword [MY_STRING] */
const gchar *sig_name; /* signature name [STRING] */
const gchar *ctype; /* C type name [gchar*] */
const gchar *setter; /* value setter function [g_value_set_string] */
} OutArgument;
typedef struct
{
gchar *ploc;
OutArgument *rarg;
GList *args; /* of type InArgument* */
} Signature;
/* --- prototypes --- */
static void parse_args (gint *argc_p,
gchar ***argv_p);
static void print_blurb (FILE *bout,
gboolean print_help);
/* --- variables --- */
static const GScannerConfig scanner_config_template =
{
(
" \t\r" /* "\n" is statement delimiter */
) /* cset_skip_characters */,
(
G_CSET_a_2_z
"_"
G_CSET_A_2_Z
) /* cset_identifier_first */,
(
G_CSET_a_2_z
"_0123456789"
G_CSET_A_2_Z
) /* cset_identifier_nth */,
( "#\n" ) /* cpair_comment_single */,
FALSE /* case_sensitive */,
TRUE /* skip_comment_multi */,
TRUE /* skip_comment_single */,
TRUE /* scan_comment_multi */,
TRUE /* scan_identifier */,
FALSE /* scan_identifier_1char */,
FALSE /* scan_identifier_NULL */,
TRUE /* scan_symbols */,
FALSE /* scan_binary */,
TRUE /* scan_octal */,
TRUE /* scan_float */,
TRUE /* scan_hex */,
FALSE /* scan_hex_dollar */,
TRUE /* scan_string_sq */,
TRUE /* scan_string_dq */,
TRUE /* numbers_2_int */,
FALSE /* int_2_float */,
FALSE /* identifier_2_string */,
TRUE /* char_2_token */,
FALSE /* symbol_2_token */,
FALSE /* scope_0_fallback */,
};
static const char *std_marshaller_prefix = "g_cclosure_marshal";
static const char *marshaller_prefix = "g_cclosure_user_marshal";
static gchar *output_fn = NULL;
static gint output_fd = -1;
static gchar *output_tmpfn = NULL;
static GHashTable *marshallers = NULL;
static FILE *fout = NULL;
static gboolean gen_cheader = FALSE;
static gboolean gen_cbody = FALSE;
static gboolean gen_internal = FALSE;
static gboolean gen_valist = FALSE;
static gboolean skip_ploc = FALSE;
static gboolean std_includes = TRUE;
static gint exit_status = 0;
/* --- functions --- */
static void
put_marshal_value_getters (void)
{
fputs ("\n", fout);
fputs ("#ifdef G_ENABLE_DEBUG\n", fout);
fputs ("#define g_marshal_value_peek_boolean(v) g_value_get_boolean (v)\n", fout);
fputs ("#define g_marshal_value_peek_char(v) g_value_get_schar (v)\n", fout);
fputs ("#define g_marshal_value_peek_uchar(v) g_value_get_uchar (v)\n", fout);
fputs ("#define g_marshal_value_peek_int(v) g_value_get_int (v)\n", fout);
fputs ("#define g_marshal_value_peek_uint(v) g_value_get_uint (v)\n", fout);
fputs ("#define g_marshal_value_peek_long(v) g_value_get_long (v)\n", fout);
fputs ("#define g_marshal_value_peek_ulong(v) g_value_get_ulong (v)\n", fout);
fputs ("#define g_marshal_value_peek_int64(v) g_value_get_int64 (v)\n", fout);
fputs ("#define g_marshal_value_peek_uint64(v) g_value_get_uint64 (v)\n", fout);
fputs ("#define g_marshal_value_peek_enum(v) g_value_get_enum (v)\n", fout);
fputs ("#define g_marshal_value_peek_flags(v) g_value_get_flags (v)\n", fout);
fputs ("#define g_marshal_value_peek_float(v) g_value_get_float (v)\n", fout);
fputs ("#define g_marshal_value_peek_double(v) g_value_get_double (v)\n", fout);
fputs ("#define g_marshal_value_peek_string(v) (char*) g_value_get_string (v)\n", fout);
fputs ("#define g_marshal_value_peek_param(v) g_value_get_param (v)\n", fout);
fputs ("#define g_marshal_value_peek_boxed(v) g_value_get_boxed (v)\n", fout);
fputs ("#define g_marshal_value_peek_pointer(v) g_value_get_pointer (v)\n", fout);
fputs ("#define g_marshal_value_peek_object(v) g_value_get_object (v)\n", fout);
fputs ("#define g_marshal_value_peek_variant(v) g_value_get_variant (v)\n", fout);
fputs ("#else /* !G_ENABLE_DEBUG */\n", fout);
fputs ("/* WARNING: This code accesses GValues directly, which is UNSUPPORTED API.\n", fout);
fputs (" * Do not access GValues directly in your code. Instead, use the\n", fout);
fputs (" * g_value_get_*() functions\n", fout);
fputs (" */\n", fout);
fputs ("#define g_marshal_value_peek_boolean(v) (v)->data[0].v_int\n", fout);
fputs ("#define g_marshal_value_peek_char(v) (v)->data[0].v_int\n", fout);
fputs ("#define g_marshal_value_peek_uchar(v) (v)->data[0].v_uint\n", fout);
fputs ("#define g_marshal_value_peek_int(v) (v)->data[0].v_int\n", fout);
fputs ("#define g_marshal_value_peek_uint(v) (v)->data[0].v_uint\n", fout);
fputs ("#define g_marshal_value_peek_long(v) (v)->data[0].v_long\n", fout);
fputs ("#define g_marshal_value_peek_ulong(v) (v)->data[0].v_ulong\n", fout);
fputs ("#define g_marshal_value_peek_int64(v) (v)->data[0].v_int64\n", fout);
fputs ("#define g_marshal_value_peek_uint64(v) (v)->data[0].v_uint64\n", fout);
fputs ("#define g_marshal_value_peek_enum(v) (v)->data[0].v_long\n", fout);
fputs ("#define g_marshal_value_peek_flags(v) (v)->data[0].v_ulong\n", fout);
fputs ("#define g_marshal_value_peek_float(v) (v)->data[0].v_float\n", fout);
fputs ("#define g_marshal_value_peek_double(v) (v)->data[0].v_double\n", fout);
fputs ("#define g_marshal_value_peek_string(v) (v)->data[0].v_pointer\n", fout);
fputs ("#define g_marshal_value_peek_param(v) (v)->data[0].v_pointer\n", fout);
fputs ("#define g_marshal_value_peek_boxed(v) (v)->data[0].v_pointer\n", fout);
fputs ("#define g_marshal_value_peek_pointer(v) (v)->data[0].v_pointer\n", fout);
fputs ("#define g_marshal_value_peek_object(v) (v)->data[0].v_pointer\n", fout);
fputs ("#define g_marshal_value_peek_variant(v) (v)->data[0].v_pointer\n", fout);
fputs ("#endif /* !G_ENABLE_DEBUG */\n", fout);
fputs ("\n", fout);
}
static gboolean
complete_in_arg (InArgument *iarg)
{
static const InArgument args[] = {
/* keyword sig_name ctype promoted getter */
{ "VOID", "VOID", "void", "void", NULL, },
{ "BOOLEAN", "BOOLEAN", "gboolean", "gboolean", "g_marshal_value_peek_boolean", },
{ "CHAR", "CHAR", "gchar", "gint", "g_marshal_value_peek_char", },
{ "UCHAR", "UCHAR", "guchar", "guint", "g_marshal_value_peek_uchar", },
{ "INT", "INT", "gint", "gint", "g_marshal_value_peek_int", },
{ "UINT", "UINT", "guint", "guint", "g_marshal_value_peek_uint", },
{ "LONG", "LONG", "glong", "glong", "g_marshal_value_peek_long", },
{ "ULONG", "ULONG", "gulong", "gulong", "g_marshal_value_peek_ulong", },
{ "INT64", "INT64", "gint64", "gint64", "g_marshal_value_peek_int64", },
{ "UINT64", "UINT64", "guint64", "guint64", "g_marshal_value_peek_uint64", },
{ "ENUM", "ENUM", "gint", "gint", "g_marshal_value_peek_enum", },
{ "FLAGS", "FLAGS", "guint", "guint", "g_marshal_value_peek_flags", },
{ "FLOAT", "FLOAT", "gfloat", "gdouble", "g_marshal_value_peek_float", },
{ "DOUBLE", "DOUBLE", "gdouble", "gdouble", "g_marshal_value_peek_double", },
{ "STRING", "STRING", "gpointer", "gpointer", "g_marshal_value_peek_string", "g_strdup", "g_free"},
{ "PARAM", "PARAM", "gpointer", "gpointer", "g_marshal_value_peek_param", "g_param_spec_ref", "g_param_spec_unref"},
{ "BOXED", "BOXED", "gpointer", "gpointer", "g_marshal_value_peek_boxed", "g_boxed_copy", "g_boxed_free", FALSE, TRUE},
{ "POINTER", "POINTER", "gpointer", "gpointer", "g_marshal_value_peek_pointer", },
{ "OBJECT", "OBJECT", "gpointer", "gpointer", "g_marshal_value_peek_object", "g_object_ref", "g_object_unref", TRUE},
{ "VARIANT", "VARIANT", "gpointer", "gpointer", "g_marshal_value_peek_variant", "g_variant_ref_sink", "g_variant_unref"},
/* deprecated: */
{ "NONE", "VOID", "void", "void", NULL, },
{ "BOOL", "BOOLEAN", "gboolean", "gboolean", "g_marshal_value_peek_boolean", },
};
guint i;
g_return_val_if_fail (iarg != NULL, FALSE);
for (i = 0; i < G_N_ELEMENTS (args); i++)
if (strcmp (args[i].keyword, iarg->keyword) == 0)
{
iarg->sig_name = args[i].sig_name;
iarg->ctype = args[i].ctype;
iarg->promoted_ctype = args[i].promoted_ctype;
iarg->getter = args[i].getter;
iarg->box = args[i].box;
iarg->unbox = args[i].unbox;
iarg->box_ignores_static = args[i].box_ignores_static;
iarg->box_takes_type = args[i].box_takes_type;
return TRUE;
}
return FALSE;
}
static gboolean
complete_out_arg (OutArgument *oarg)
{
static const OutArgument args[] = {
/* keyword sig_name ctype setter */
{ "VOID", "VOID", "void", NULL, },
{ "BOOLEAN", "BOOLEAN", "gboolean", "g_value_set_boolean", },
{ "CHAR", "CHAR", "gchar", "g_value_set_char", },
{ "UCHAR", "UCHAR", "guchar", "g_value_set_uchar", },
{ "INT", "INT", "gint", "g_value_set_int", },
{ "UINT", "UINT", "guint", "g_value_set_uint", },
{ "LONG", "LONG", "glong", "g_value_set_long", },
{ "ULONG", "ULONG", "gulong", "g_value_set_ulong", },
{ "INT64", "INT64", "gint64", "g_value_set_int64", },
{ "UINT64", "UINT64", "guint64", "g_value_set_uint64", },
{ "ENUM", "ENUM", "gint", "g_value_set_enum", },
{ "FLAGS", "FLAGS", "guint", "g_value_set_flags", },
{ "FLOAT", "FLOAT", "gfloat", "g_value_set_float", },
{ "DOUBLE", "DOUBLE", "gdouble", "g_value_set_double", },
{ "STRING", "STRING", "gchar*", "g_value_take_string", },
{ "PARAM", "PARAM", "GParamSpec*", "g_value_take_param", },
{ "BOXED", "BOXED", "gpointer", "g_value_take_boxed", },
{ "POINTER", "POINTER", "gpointer", "g_value_set_pointer", },
{ "OBJECT", "OBJECT", "GObject*", "g_value_take_object", },
{ "VARIANT", "VARIANT", "GVariant*", "g_value_take_variant", },
/* deprecated: */
{ "NONE", "VOID", "void", NULL, },
{ "BOOL", "BOOLEAN", "gboolean", "g_value_set_boolean", },
};
guint i;
g_return_val_if_fail (oarg != NULL, FALSE);
for (i = 0; i < G_N_ELEMENTS (args); i++)
if (strcmp (args[i].keyword, oarg->keyword) == 0)
{
oarg->sig_name = args[i].sig_name;
oarg->ctype = args[i].ctype;
oarg->setter = args[i].setter;
return TRUE;
}
return FALSE;
}
static const gchar*
pad (const gchar *string)
{
#define PAD_LENGTH 12
static gchar *buffer = NULL;
gint i;
g_return_val_if_fail (string != NULL, NULL);
if (!buffer)
buffer = g_new (gchar, PAD_LENGTH + 1);
/* paranoid check */
if (strlen (string) >= PAD_LENGTH)
{
g_free (buffer);
buffer = g_strdup_printf ("%s ", string);
g_warning ("overfull string (%u bytes) for padspace",
(guint) strlen (string));
exit_status |= 2;
return buffer;
}
for (i = 0; i < PAD_LENGTH; i++)
{
gboolean done = *string == 0;
buffer[i] = done ? ' ' : *string++;
}
buffer[i] = 0;
return buffer;
}
static const gchar*
indent (guint n_spaces)
{
static gchar *buffer = NULL;
static guint blength = 0;
if (blength <= n_spaces)
{
blength = n_spaces + 1;
g_free (buffer);
buffer = g_new (gchar, blength);
}
memset (buffer, ' ', n_spaces);
buffer[n_spaces] = 0;
return buffer;
}
static void
generate_marshal (const gchar *signame,
Signature *sig)
{
guint ind, a;
GList *node;
gchar *tmp = g_strconcat (marshaller_prefix, "_", signame, NULL);
gboolean have_std_marshaller = FALSE;
/* here we have to make sure a marshaller named <marshaller_prefix>_<signame>
* exists. we might have put it out already, can revert to a standard
* marshaller provided by glib, or need to generate one.
*/
if (g_hash_table_lookup (marshallers, tmp))
{
/* done, marshaller already generated */
g_free (tmp);
return;
}
else
{
/* need to alias/generate marshaller, register name */
g_hash_table_insert (marshallers, tmp, tmp);
}
/* can we revert to a standard marshaller? */
if (std_includes)
{
tmp = g_strconcat (std_marshaller_prefix, "_", signame, NULL);
have_std_marshaller = g_hash_table_lookup (marshallers, tmp) != NULL;
g_free (tmp);
}
/* GValue marshaller */
if (gen_cheader && have_std_marshaller)
{
g_fprintf (fout, "#define %s_%s\t%s_%s\n", marshaller_prefix, signame, std_marshaller_prefix, signame);
}
/* We emit the prototype in both the header and the source, to pass
* without warnings when building with -Wmissing-prototypes
*/
if (!have_std_marshaller)
{
ind = g_fprintf (fout, gen_internal ? "G_GNUC_INTERNAL " : "extern ");
ind += g_fprintf (fout, "void ");
ind += g_fprintf (fout, "%s_%s (", marshaller_prefix, signame);
g_fprintf (fout, "GClosure *closure,\n");
g_fprintf (fout, "%sGValue *return_value,\n", indent (ind));
g_fprintf (fout, "%sguint n_param_values,\n", indent (ind));
g_fprintf (fout, "%sconst GValue *param_values,\n", indent (ind));
g_fprintf (fout, "%sgpointer invocation_hint,\n", indent (ind));
g_fprintf (fout, "%sgpointer marshal_data);\n",
indent (ind));
}
if (gen_cbody && !have_std_marshaller)
{
/* cfile marshal header */
g_fprintf (fout, "void\n");
ind = g_fprintf (fout, "%s_%s (", marshaller_prefix, signame);
g_fprintf (fout, "GClosure *closure,\n");
g_fprintf (fout, "%sGValue *return_value%s,\n", indent (ind),
sig->rarg->setter ? "" : " G_GNUC_UNUSED");
g_fprintf (fout, "%sguint n_param_values,\n", indent (ind));
g_fprintf (fout, "%sconst GValue *param_values,\n", indent (ind));
g_fprintf (fout, "%sgpointer invocation_hint G_GNUC_UNUSED,\n", indent (ind));
g_fprintf (fout, "%sgpointer marshal_data)\n", indent (ind));
g_fprintf (fout, "{\n");
/* cfile GMarshalFunc typedef */
ind = g_fprintf (fout, " typedef %s (*GMarshalFunc_%s) (", sig->rarg->ctype, signame);
g_fprintf (fout, "%s data1,\n", pad ("gpointer"));
for (a = 1, node = sig->args; node; node = node->next)
{
InArgument *iarg = node->data;
if (iarg->getter)
g_fprintf (fout, "%s%s arg_%d,\n", indent (ind), pad (iarg->ctype), a++);
}
g_fprintf (fout, "%s%s data2);\n", indent (ind), pad ("gpointer"));
/* cfile marshal variables */
g_fprintf (fout, " GMarshalFunc_%s callback;\n", signame);
g_fprintf (fout, " GCClosure *cc = (GCClosure*) closure;\n");
g_fprintf (fout, " gpointer data1, data2;\n");
if (sig->rarg->setter)
g_fprintf (fout, " %s v_return;\n", sig->rarg->ctype);
if (sig->args || sig->rarg->setter)
{
g_fprintf (fout, "\n");
if (sig->rarg->setter)
g_fprintf (fout, " g_return_if_fail (return_value != NULL);\n");
if (sig->args)
{
for (a = 0, node = sig->args; node; node = node->next)
{
InArgument *iarg = node->data;
if (iarg->getter)
a++;
}
g_fprintf (fout, " g_return_if_fail (n_param_values == %u);\n", 1 + a);
}
}
/* cfile marshal data1, data2 and callback setup */
g_fprintf (fout, "\n");
g_fprintf (fout, " if (G_CCLOSURE_SWAP_DATA (closure))\n {\n");
g_fprintf (fout, " data1 = closure->data;\n");
g_fprintf (fout, " data2 = g_value_peek_pointer (param_values + 0);\n");
g_fprintf (fout, " }\n else\n {\n");
g_fprintf (fout, " data1 = g_value_peek_pointer (param_values + 0);\n");
g_fprintf (fout, " data2 = closure->data;\n");
g_fprintf (fout, " }\n");
g_fprintf (fout, " callback = (GMarshalFunc_%s) (marshal_data ? marshal_data : cc->callback);\n", signame);
/* cfile marshal callback action */
g_fprintf (fout, "\n");
ind = g_fprintf (fout, " %s callback (", sig->rarg->setter ? " v_return =" : "");
g_fprintf (fout, "data1,\n");
for (a = 1, node = sig->args; node; node = node->next)
{
InArgument *iarg = node->data;
if (iarg->getter)
g_fprintf (fout, "%s%s (param_values + %d),\n", indent (ind), iarg->getter, a++);
}
g_fprintf (fout, "%sdata2);\n", indent (ind));
/* cfile marshal return value storage */
if (sig->rarg->setter)
{
g_fprintf (fout, "\n");
g_fprintf (fout, " %s (return_value, v_return);\n", sig->rarg->setter);
}
/* cfile marshal footer */
g_fprintf (fout, "}\n");
}
/* vararg marshaller */
if (gen_cheader && gen_valist && have_std_marshaller)
{
g_fprintf (fout, "#define %s_%sv\t%s_%sv\n", marshaller_prefix, signame, std_marshaller_prefix, signame);
}
/* Like above, we generate the prototype for both the header and source */
if (gen_valist && !have_std_marshaller)
{
ind = g_fprintf (fout, gen_internal ? "G_GNUC_INTERNAL " : "extern ");
ind += g_fprintf (fout, "void ");
ind += g_fprintf (fout, "%s_%sv (", marshaller_prefix, signame);
g_fprintf (fout, "GClosure *closure,\n");
g_fprintf (fout, "%sGValue *return_value,\n", indent (ind));
g_fprintf (fout, "%sgpointer instance,\n", indent (ind));
g_fprintf (fout, "%sva_list args,\n", indent (ind));
g_fprintf (fout, "%sgpointer marshal_data,\n", indent (ind));
g_fprintf (fout, "%sint n_params,\n", indent (ind));
g_fprintf (fout, "%sGType *param_types);\n", indent (ind));
}
if (gen_cbody && gen_valist && !have_std_marshaller)
{
gint i;
gboolean has_arg;
g_fprintf (fout, "void\n");
ind = g_fprintf (fout, "%s_%sv (", marshaller_prefix, signame);
g_fprintf (fout, "GClosure *closure,\n");
g_fprintf (fout, "%sGValue *return_value,\n", indent (ind));
g_fprintf (fout, "%sgpointer instance,\n", indent (ind));
g_fprintf (fout, "%sva_list args,\n", indent (ind));
g_fprintf (fout, "%sgpointer marshal_data,\n", indent (ind));
g_fprintf (fout, "%sint n_params,\n", indent (ind));
g_fprintf (fout, "%sGType *param_types)\n", indent (ind));
g_fprintf (fout, "{\n");
ind = g_fprintf (fout, " typedef %s (*GMarshalFunc_%s) (", sig->rarg->ctype, signame);
g_fprintf (fout, "%s instance", pad ("gpointer"));
for (a = 0, node = sig->args; node; node = node->next)
{
InArgument *iarg = node->data;
if (iarg->getter)
g_fprintf (fout, ",\n%s%s arg_%d", indent (ind), pad (iarg->ctype), a++);
}
g_fprintf (fout, ",\n%s%s data);\n", indent (ind), pad ("gpointer"));
g_fprintf (fout, " GCClosure *cc = (GCClosure*) closure;\n");
g_fprintf (fout, " gpointer data1, data2;\n");
g_fprintf (fout, " GMarshalFunc_%s callback;\n", signame);
has_arg = FALSE;
i = 0;
for (node = sig->args; node; node = node->next)
{
InArgument *iarg = node->data;
if (iarg->getter)
{
g_fprintf (fout, " %s arg%i;\n", iarg->ctype, i++);
has_arg = TRUE;
}
}
if (has_arg)
g_fprintf (fout, " va_list args_copy;\n");
if (sig->rarg->setter)
g_fprintf (fout, " %s v_return;\n", sig->rarg->ctype);
if (sig->rarg->setter)
{
g_fprintf (fout, "\n");
g_fprintf (fout, " g_return_if_fail (return_value != NULL);\n");
}
/* cfile marshal data1, data2 and callback setup */
if (has_arg)
{
g_fprintf (fout, "\n");
g_fprintf (fout, " G_VA_COPY (args_copy, args);\n");
i = 0;
for (node = sig->args; node; node = node->next)
{
InArgument *iarg = node->data;
if (iarg->getter)
{
g_fprintf (fout, " arg%i = (%s) va_arg (args_copy, %s);\n",
i, iarg->ctype, iarg->promoted_ctype);
if (iarg->box != NULL)
{
g_fprintf (fout, " if (");
if (!iarg->box_ignores_static)
g_fprintf (fout, "(param_types[%i] & G_SIGNAL_TYPE_STATIC_SCOPE) == 0 && ", i);
g_fprintf (fout, "arg%i != NULL)\n ", i);
if (iarg->box_takes_type)
g_fprintf (fout,
" arg%i = %s (param_types[%i] & ~G_SIGNAL_TYPE_STATIC_SCOPE, arg%i);\n",
i, iarg->box, i, i);
else
g_fprintf (fout,
" arg%i = %s (arg%i);\n",
i, iarg->box, i);
}
}
i++;
}
g_fprintf (fout, " va_end (args_copy);\n");
}
g_fprintf (fout, "\n");
/* cfile marshal data1, data2 and callback setup */
g_fprintf (fout, " if (G_CCLOSURE_SWAP_DATA (closure))\n {\n");
g_fprintf (fout, " data1 = closure->data;\n");
g_fprintf (fout, " data2 = instance;\n");
g_fprintf (fout, " }\n else\n {\n");
g_fprintf (fout, " data1 = instance;\n");
g_fprintf (fout, " data2 = closure->data;\n");
g_fprintf (fout, " }\n");
g_fprintf (fout, " callback = (GMarshalFunc_%s) (marshal_data ? marshal_data : cc->callback);\n", signame);
/* cfile marshal callback action */
g_fprintf (fout, "\n");
ind = g_fprintf (fout, " %s callback (", sig->rarg->setter ? " v_return =" : "");
g_fprintf (fout, "data1");
i = 0;
for (node = sig->args; node; node = node->next)
{
InArgument *iarg = node->data;
if (iarg->getter)
g_fprintf (fout, ",\n%sarg%i", indent (ind), i++);
}
g_fprintf (fout, ",\n%sdata2);\n", indent (ind));
i = 0;
for (node = sig->args; node; node = node->next)
{
InArgument *iarg = node->data;
if (iarg->unbox)
{
g_fprintf (fout, " if (");
if (!iarg->box_ignores_static)
g_fprintf (fout, "(param_types[%i] & G_SIGNAL_TYPE_STATIC_SCOPE) == 0 && ", i);
g_fprintf (fout, "arg%i != NULL)\n ", i);
if (iarg->box_takes_type)
g_fprintf (fout,
" %s (param_types[%i] & ~G_SIGNAL_TYPE_STATIC_SCOPE, arg%i);\n",
iarg->unbox, i, i);
else
g_fprintf (fout,
" %s (arg%i);\n",
iarg->unbox, i);
}
i++;
}
/* cfile marshal return value storage */
if (sig->rarg->setter)
{
g_fprintf (fout, "\n");
g_fprintf (fout, " %s (return_value, v_return);\n", sig->rarg->setter);
}
g_fprintf (fout, "}\n\n");
}
}
static void
process_signature (Signature *sig)
{
gchar *pname, *sname, *tmp;
GList *node;
/* lookup and complete info on arguments */
if (!complete_out_arg (sig->rarg))
{
g_warning ("unknown type: %s", sig->rarg->keyword);
exit_status |= 1;
return;
}
for (node = sig->args; node; node = node->next)
{
InArgument *iarg = node->data;
if (!complete_in_arg (iarg))
{
g_warning ("unknown type: %s", iarg->keyword);
exit_status |= 1;
return;
}
}
/* construct requested marshaller name and technical marshaller name */
pname = g_strconcat (sig->rarg->keyword, "_", NULL);
sname = g_strconcat (sig->rarg->sig_name, "_", NULL);
for (node = sig->args; node; node = node->next)
{
InArgument *iarg = node->data;
gchar *tmp;
tmp = sname;
sname = g_strconcat (tmp, "_", iarg->sig_name, NULL);
g_free (tmp);
tmp = pname;
pname = g_strconcat (tmp, "_", iarg->keyword, NULL);
g_free (tmp);
}
/* introductionary comment */
g_fprintf (fout, "\n/* %s", sig->rarg->keyword);
for (node = sig->args; node; node = node->next)
{
InArgument *iarg = node->data;
g_fprintf (fout, "%c%s", node->prev ? ',' : ':', iarg->keyword);
}
if (!skip_ploc)
g_fprintf (fout, " (%s)", sig->ploc);
g_fprintf (fout, " */\n");
/* ensure technical marshaller exists (<marshaller_prefix>_<sname>) */
generate_marshal (sname, sig);
/* put out marshaller alias for requested name if required (<marshaller_prefix>_<pname>) */
tmp = g_strconcat (marshaller_prefix, "_", pname, NULL);
if (gen_cheader && !g_hash_table_lookup (marshallers, tmp))
{
g_fprintf (fout, "#define %s_%s\t%s_%s\n", marshaller_prefix, pname, marshaller_prefix, sname);
g_hash_table_insert (marshallers, tmp, tmp);
}
else
g_free (tmp);
g_free (pname);
g_free (sname);
}
static InArgument*
new_in_arg (const gchar *pname)
{
InArgument *iarg = g_new0 (InArgument, 1);
iarg->keyword = g_strdup (pname);
return iarg;
}
static OutArgument*
new_out_arg (const gchar *pname)
{
OutArgument *oarg = g_new0 (OutArgument, 1);
oarg->keyword = g_strdup (pname);
return oarg;
}
static guint
parse_line (GScanner *scanner,
Signature *sig)
{
/* parse identifier for return value */
if (g_scanner_get_next_token (scanner) != G_TOKEN_IDENTIFIER)
return G_TOKEN_IDENTIFIER;
sig->rarg = new_out_arg (scanner->value.v_identifier);
/* keep a note on the location */
sig->ploc = g_strdup_printf ("%s:%u", scanner->input_name, scanner->line);
/* expect ':' */
if (g_scanner_get_next_token (scanner) != ':')
return ':';
/* parse first argument */
if (g_scanner_get_next_token (scanner) != G_TOKEN_IDENTIFIER)
return G_TOKEN_IDENTIFIER;
sig->args = g_list_append (sig->args, new_in_arg (scanner->value.v_identifier));
/* parse rest of argument list */
while (g_scanner_peek_next_token (scanner) == ',')
{
/* eat comma */
g_scanner_get_next_token (scanner);
/* parse arg identifier */
if (g_scanner_get_next_token (scanner) != G_TOKEN_IDENTIFIER)
return G_TOKEN_IDENTIFIER;
sig->args = g_list_append (sig->args, new_in_arg (scanner->value.v_identifier));
}
/* expect end of line, done */
if (g_scanner_get_next_token (scanner) != '\n')
return '\n';
/* success */
return G_TOKEN_NONE;
}
static gboolean
string_key_destroy (gpointer key,
gpointer value,
gpointer user_data)
{
g_free (key);
return TRUE;
}
int
main (int argc,
char *argv[])
{
const gchar *gobject_marshallers[] = {
#include "gmarshal.strings"
};
GScanner *scanner;
GSList *slist, *files = NULL;
gint i;
/* parse args and do fast exits */
parse_args (&argc, &argv);
/* list input files */
for (i = 1; i < argc; i++)
files = g_slist_prepend (files, argv[i]);
if (files)
files = g_slist_reverse (files);
else
files = g_slist_prepend (files, "/dev/stdin");
/* setup auxiliary structs */
scanner = g_scanner_new (&scanner_config_template);
marshallers = g_hash_table_new (g_str_hash, g_str_equal);
if (output_fn)
{
output_tmpfn = g_strconcat (output_fn, ".XXXXXX", NULL);
if ((output_fd = g_mkstemp (output_tmpfn)) == -1)
{
g_printerr ("Failed to create temp file \"%s\": %s\n", output_tmpfn, g_strerror (errno));
return EXIT_FAILURE;
}
fout = fdopen (output_fd, "wb");
g_assert (fout != NULL);
}
else
fout = stdout;
/* add standard marshallers of the GObject library */
if (std_includes)
for (i = 0; i < G_N_ELEMENTS (gobject_marshallers); i++)
{
gchar *tmp = g_strdup (gobject_marshallers[i]);
g_hash_table_insert (marshallers, tmp, tmp);
}
/* put out initial heading */
g_fprintf (fout, "\n");
if (gen_cheader && std_includes)
{
g_fprintf (fout, "#ifndef __%s_MARSHAL_H__\n", marshaller_prefix);
g_fprintf (fout, "#define __%s_MARSHAL_H__\n\n", marshaller_prefix);
}
if ((gen_cheader || gen_cbody) && std_includes)
g_fprintf (fout, "#include\t<glib-object.h>\n\n");
if (gen_cheader)
g_fprintf (fout, "G_BEGIN_DECLS\n");
/* generate necessary preprocessor directives */
if (gen_cbody)
put_marshal_value_getters ();
/* process input files */
for (slist = files; slist; slist = slist->next)
{
gchar *file = slist->data;
gint fd;
if (strcmp (file, "/dev/stdin") == 0)
/* Mostly for Win32. This is equivalent to opening /dev/stdin */
fd = dup (0);
else
fd = g_open (file, O_RDONLY, 0);
if (fd < 0)
{
g_warning ("failed to open \"%s\": %s", file, g_strerror (errno));
exit_status |= 1;
continue;
}
/* set file name for error reports */
scanner->input_name = file;
/* parse & process file */
g_scanner_input_file (scanner, fd);
/* scanning loop, we parse the input until its end is reached,
* or our sub routine came across invalid syntax
*/
do
{
guint expected_token = G_TOKEN_NONE;
switch ((guint) g_scanner_peek_next_token (scanner))
{
case '\n':
/* eat newline and restart */
g_scanner_get_next_token (scanner);
continue;
case G_TOKEN_EOF:
/* done */
break;
default:
/* parse and process signatures */
{
Signature signature = { NULL, NULL, NULL };
GList *node;
expected_token = parse_line (scanner, &signature);
/* once we got a valid signature, process it */
if (expected_token == G_TOKEN_NONE)
process_signature (&signature);
/* clean up signature contents */
g_free (signature.ploc);
if (signature.rarg)
g_free (signature.rarg->keyword);
g_free (signature.rarg);
for (node = signature.args; node; node = node->next)
{
InArgument *iarg = node->data;
g_free (iarg->keyword);
g_free (iarg);
}
g_list_free (signature.args);
}
break;
}
/* bail out on errors */
if (expected_token != G_TOKEN_NONE)
{
g_scanner_unexp_token (scanner, expected_token, "type name", NULL, NULL, NULL, TRUE);
exit_status |= 1;
break;
}
g_scanner_peek_next_token (scanner);
}
while (scanner->next_token != G_TOKEN_EOF);
close (fd);
}
/* put out trailer */
if (gen_cheader)
{
g_fprintf (fout, "\nG_END_DECLS\n");
if (std_includes)
g_fprintf (fout, "\n#endif /* __%s_MARSHAL_H__ */\n", marshaller_prefix);
}
g_fprintf (fout, "\n");
/* clean up */
g_slist_free (files);
g_scanner_destroy (scanner);
g_hash_table_foreach_remove (marshallers, string_key_destroy, NULL);
g_hash_table_destroy (marshallers);
if (output_fn)
{
fclose (fout);
if (g_rename (output_tmpfn, output_fn) != 0)
{
g_printerr ("Failed to rename \"%s\" to \"%s\": %s\n", output_tmpfn, output_fn, g_strerror (errno));
g_unlink (output_tmpfn);
exit_status = EXIT_FAILURE;
}
g_free (output_tmpfn);
}
return exit_status;
}
static void
parse_args (gint *argc_p,
gchar ***argv_p)
{
guint argc = *argc_p;
gchar **argv = *argv_p;
guint i, e;
for (i = 1; i < argc; i++)
{
if (strcmp ("--header", argv[i]) == 0)
{
gen_cheader = TRUE;
argv[i] = NULL;
}
else if (strcmp ("--body", argv[i]) == 0)
{
gen_cbody = TRUE;
argv[i] = NULL;
}
else if (strcmp ("--skip-source", argv[i]) == 0)
{
skip_ploc = TRUE;
argv[i] = NULL;
}
else if (strcmp ("--nostdinc", argv[i]) == 0)
{
std_includes = FALSE;
argv[i] = NULL;
}
else if (strcmp ("--stdinc", argv[i]) == 0)
{
std_includes = TRUE;
argv[i] = NULL;
}
else if (strcmp ("--internal", argv[i]) == 0)
{
gen_internal = TRUE;
argv[i] = NULL;
}
else if (strcmp ("--valist-marshallers", argv[i]) == 0)
{
gen_valist = TRUE;
argv[i] = NULL;
}
else if ((strcmp ("--prefix", argv[i]) == 0) ||
(strncmp ("--prefix=", argv[i], 9) == 0))
{
gchar *equal = argv[i] + strlen ("--prefix");
if (*equal == '=')
marshaller_prefix = equal + 1;
else if (i + 1 < argc)
{
marshaller_prefix = argv[i + 1];
argv[i] = NULL;
i += 1;
}
argv[i] = NULL;
}
else if ((strcmp ("--output", argv[i]) == 0) ||
(strncmp ("--output=", argv[i], 9) == 0))
{
gchar *equal = argv[i] + strlen ("--output");
if (*equal == '=')
output_fn = equal + 1;
else if (i + 1 < argc)
{
output_fn = argv[i + 1];
argv[i] = NULL;
i += 1;
}
argv[i] = NULL;
}
else if (strcmp ("-h", argv[i]) == 0 ||
strcmp ("-?", argv[i]) == 0 ||
strcmp ("--help", argv[i]) == 0)
{
print_blurb (stderr, TRUE);
argv[i] = NULL;
exit (0);
}
else if (strcmp ("-v", argv[i]) == 0 ||
strcmp ("--version", argv[i]) == 0)
{
print_blurb (stderr, FALSE);
argv[i] = NULL;
exit (0);
}
else if (strcmp (argv[i], "--g-fatal-warnings") == 0)
{
GLogLevelFlags fatal_mask;
fatal_mask = g_log_set_always_fatal (G_LOG_FATAL_MASK);
fatal_mask |= G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL;
g_log_set_always_fatal (fatal_mask);
argv[i] = NULL;
}
}
e = 0;
for (i = 1; i < argc; i++)
{
if (e)
{
if (argv[i])
{
argv[e++] = argv[i];
argv[i] = NULL;
}
}
else if (!argv[i])
e = i;
}
if (e)
*argc_p = e;
}
static void
print_blurb (FILE *bout,
gboolean print_help)
{
if (!print_help)
{
g_fprintf (bout, "%s version ", PRG_NAME);
g_fprintf (bout, "%u.%u.%u", GLIB_MAJOR_VERSION, GLIB_MINOR_VERSION, GLIB_MICRO_VERSION);
g_fprintf (bout, "\n");
g_fprintf (bout, "%s comes with ABSOLUTELY NO WARRANTY.\n", PRG_NAME);
g_fprintf (bout, "You may redistribute copies of %s under the terms of\n", PRG_NAME);
g_fprintf (bout, "the GNU General Public License which can be found in the\n");
g_fprintf (bout, "%s source package. Sources, examples and contact\n", PKG_NAME);
g_fprintf (bout, "information are available at %s\n", PKG_HTTP_HOME);
}
else
{
g_fprintf (bout, "Usage:\n");
g_fprintf (bout, " %s [OPTION...] [FILES...]\n\n", PRG_NAME);
g_fprintf (bout, "Help Options:\n");
g_fprintf (bout, " -h, --help Show this help message\n\n");
g_fprintf (bout, "Utility Options:\n");
g_fprintf (bout, " --header Generate C headers\n");
g_fprintf (bout, " --body Generate C code\n");
g_fprintf (bout, " --prefix=STRING Specify marshaller prefix\n");
g_fprintf (bout, " --output=FILE Write output into the specified file\n");
g_fprintf (bout, " --skip-source Skip source location comments\n");
g_fprintf (bout, " --stdinc, --nostdinc Include/use standard marshallers\n");
g_fprintf (bout, " --internal Mark generated functions as internal\n");
g_fprintf (bout, " --valist-marshallers Generate va_list marshallers\n");
g_fprintf (bout, " -v, --version Print version informations\n");
g_fprintf (bout, " --g-fatal-warnings Make warnings fatal (abort)\n");
}
}
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