Reorganized the operands behaving like proxies.

11 files changed, 901 insertions, 127 deletions

diff --git a/plugins/pychrysalide/arch/Makefile.am b/plugins/pychrysalide/arch/Makefile.am
index 45fd567..cbac988 100644
--- a/plugins/pychrysalide/arch/Makefile.am
+++ b/plugins/pychrysalide/arch/Makefile.am
@@ -4,7 +4,6 @@ noinst_LTLIBRARIES = libpychrysaarch.la
 libpychrysaarch_la_SOURCES =			\
 	constants.h constants.c				\
 	context.h context.c					\
-	feeder.h feeder.c					\
 	instriter.h instriter.c				\
 	instruction.h instruction.c			\
 	module.h module.c					\
diff --git a/plugins/pychrysalide/arch/feeder.c b/plugins/pychrysalide/arch/feeder.c
deleted file mode 100644
index fbabe80..0000000
--- a/plugins/pychrysalide/arch/feeder.c
+++ /dev/null
@@ -1,116 +0,0 @@
-
-/* Chrysalide - Outil d'analyse de fichiers binaires
- * feeder.c - prototypes pour l'équivalent Python du fichier "arch/feeder.c"
- *
- * Copyright (C) 2018-2019 Cyrille Bagard
- *
- *  This file is part of Chrysalide.
- *
- *  Chrysalide is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 3 of the License, or
- *  (at your option) any later version.
- *
- *  Chrysalide 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 General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-
-#include "feeder.h"
-
-
-#include <assert.h>
-#include <pygobject.h>
-
-
-#include <arch/feeder.h>
-
-
-#include "../access.h"
-#include "../helpers.h"
-
-
-
-/******************************************************************************
-*                                                                             *
-*  Paramètres  : -                                                            *
-*                                                                             *
-*  Description : Fournit un accès à une définition de type à diffuser.        *
-*                                                                             *
-*  Retour      : Définition d'objet pour Python.                              *
-*                                                                             *
-*  Remarques   : -                                                            *
-*                                                                             *
-******************************************************************************/
-
-PyTypeObject *get_python_proxy_feeder_type(void)
-{
-    static PyMethodDef py_proxy_feeder_methods[] = {
-        { NULL }
-    };
-
-    static PyGetSetDef py_proxy_feeder_getseters[] = {
-        { NULL }
-    };
-
-    static PyTypeObject py_proxy_feeder_type = {
-
-        PyVarObject_HEAD_INIT(NULL, 0)
-
-        .tp_name        = "pychrysalide.arch.ProxyFeeder",
-        .tp_basicsize   = sizeof(PyObject),
-
-        .tp_flags       = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
-
-        .tp_doc         = "PyChrysalide proxy feeder",
-
-        .tp_methods     = py_proxy_feeder_methods,
-        .tp_getset      = py_proxy_feeder_getseters
-
-    };
-
-    return &py_proxy_feeder_type;
-
-}
-
-
-/******************************************************************************
-*                                                                             *
-*  Paramètres  : -                                                            *
-*                                                                             *
-*  Description : Prend en charge l'objet 'pychrysalide.arch.ProxyFeeder'.     *
-*                                                                             *
-*  Retour      : Bilan de l'opération.                                        *
-*                                                                             *
-*  Remarques   : -                                                            *
-*                                                                             *
-******************************************************************************/
-
-bool ensure_python_proxy_feeder_is_registered(void)
-{
-    PyTypeObject *type;                     /* Type Python 'ProxyFeeder'   */
-    PyObject *module;                       /* Module à recompléter        */
-    PyObject *dict;                         /* Dictionnaire du module      */
-
-    type = get_python_proxy_feeder_type();
-
-    if (!PyType_HasFeature(type, Py_TPFLAGS_READY))
-    {
-        module = get_access_to_python_module("pychrysalide.arch");
-
-        dict = PyModule_GetDict(module);
-
-        if (!register_interface_for_pygobject(dict, G_TYPE_PROXY_FEEDER, type))
-            return false;
-
-    }
-
-    return true;
-
-}
diff --git a/plugins/pychrysalide/arch/module.c b/plugins/pychrysalide/arch/module.c
index 1fa017d..5cd6c17 100644
--- a/plugins/pychrysalide/arch/module.c
+++ b/plugins/pychrysalide/arch/module.c
@@ -33,7 +33,6 @@
 
 
 #include "context.h"
-#include "feeder.h"
 #include "instriter.h"
 #include "instruction.h"
 #include "operand.h"
@@ -168,7 +167,6 @@ bool populate_arch_module(void)
     result = true;
 
     if (result) result = ensure_python_proc_context_is_registered();
-    if (result) result = ensure_python_proxy_feeder_is_registered();
     if (result) result = ensure_python_instr_iterator_is_registered();
     if (result) result = ensure_python_arch_instruction_is_registered();
     if (result) result = ensure_python_arch_operand_is_registered();
diff --git a/plugins/pychrysalide/arch/operands/Makefile.am b/plugins/pychrysalide/arch/operands/Makefile.am
index 7938320..2074b6b 100644
--- a/plugins/pychrysalide/arch/operands/Makefile.am
+++ b/plugins/pychrysalide/arch/operands/Makefile.am
@@ -3,8 +3,10 @@ noinst_LTLIBRARIES = libpychrysaarchoperands.la
 
 libpychrysaarchoperands_la_SOURCES =	\
 	constants.h constants.c				\
+	feeder.h feeder.c					\
 	immediate.h immediate.c				\
 	module.h module.c					\
+	proxy.h proxy.c						\
 	register.h register.c				\
 	rename.h rename.c					\
 	targetable.h targetable.c
diff --git a/plugins/pychrysalide/arch/operands/feeder.c b/plugins/pychrysalide/arch/operands/feeder.c
new file mode 100644
index 0000000..68fa052
--- /dev/null
+++ b/plugins/pychrysalide/arch/operands/feeder.c
@@ -0,0 +1,452 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * feeder.c - prototypes pour l'équivalent Python du fichier "arch/operands/feeder.c"
+ *
+ * Copyright (C) 2018-2019 Cyrille Bagard
+ *
+ *  This file is part of Chrysalide.
+ *
+ *  Chrysalide is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  Chrysalide 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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+
+#include "feeder.h"
+
+
+#include <assert.h>
+#include <pygobject.h>
+
+
+#include <arch/operands/feeder-int.h>
+
+
+#include "../../access.h"
+#include "../../helpers.h"
+#include "../../glibext/bufferline.h"
+
+
+
+/* ------------------------ GLUE POUR CREATION DEPUIS PYTHON ------------------------ */
+
+
+/* Procède à l'initialisation de l'interface de génération. */
+static void py_proxy_feeder_interface_init(GProxyFeederIface *, gpointer *);
+
+/* Compare un fournisseur avec un autre. */
+static int py_proxy_feeder___cmp___wrapper(const GProxyFeeder *, const GProxyFeeder *);
+
+/* Traduit un fournisseur en version humainement lisible. */
+static void py_proxy_feeder_print_wrapper(const GProxyFeeder *, GBufferLine *);
+
+
+
+/* ------------------------- CONNEXION AVEC L'API DE PYTHON ------------------------- */
+
+
+/* Effectue une comparaison avec un objet Python 'ProxyFeeder'. */
+static PyObject *py_proxy_feeder_richcompare(PyObject *, PyObject *, int);
+
+/* Traduit un fournisseur en version humainement lisible. */
+static PyObject *py_proxy_feeder_print(PyObject *, PyObject *);
+
+
+
+/* ---------------------------------------------------------------------------------- */
+/*                          GLUE POUR CREATION DEPUIS PYTHON                          */
+/* ---------------------------------------------------------------------------------- */
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : iface  = interface GLib à initialiser.                       *
+*                unused = adresse non utilisée ici.                           *
+*                                                                             *
+*  Description : Procède à l'initialisation de l'interface de génération.     *
+*                                                                             *
+*  Retour      : -                                                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static void py_proxy_feeder_interface_init(GProxyFeederIface *iface, gpointer *unused)
+{
+
+#define PROXY_FEEDER_DOC                                                    \
+    "ProxyFeeder gives an interface for operands which aim to provide"      \
+    " a dynamic content.\n"                                                 \
+    "\n"                                                                    \
+    "A typical class declaration for a new implementation looks like:\n"    \
+    "\n"                                                                    \
+    "    class NewImplem(GObject.Object, ProxyFeeder):\n"                   \
+    "        ...\n"                                                         \
+    "\n"                                                                    \
+    "The following methods have to be defined for new implementations:\n"   \
+    "* pychrysalide.arch.operands.ProxyFeeder._compare();\n"                \
+    "* pychrysalide.arch.operands.ProxyFeeder._print();\n"                  \
+
+    iface->compare = py_proxy_feeder___cmp___wrapper;
+    iface->print = py_proxy_feeder_print_wrapper;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : a = premier opérande à consulter.                            *
+*                b = second opérande à consulter.                             *
+*                                                                             *
+*  Description : Compare un fournisseur avec un autre.                        *
+*                                                                             *
+*  Retour      : Bilan de la comparaison.                                     *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static int py_proxy_feeder___cmp___wrapper(const GProxyFeeder *a, const GProxyFeeder *b)
+{
+    int result;                             /* Empreinte à retourner       */
+    PyGILState_STATE gstate;                /* Sauvegarde d'environnement  */
+    PyObject *pyobj;                        /* Objet Python concerné       */
+    PyObject *args;                         /* Arguments pour l'appel      */
+    PyObject *pyret;                        /* Bilan de consultation       */
+
+#define PROXY_FEEDER_CMP_WRAPPER PYTHON_WRAPPER_DEF             \
+(                                                               \
+    __cmp__, "$self, other, /",                                 \
+    METH_VARARGS,                                               \
+    "Abstract method used to compare the proxy feeder with"     \
+    " another one. This second object is always an"             \
+    " pychrysalide.arch.operands.ProxyFeeder instance.\n"       \
+    "\n"                                                        \
+    " This is the Python old-style comparison method, but"      \
+    " Chrysalide provides a glue to automatically build a rich" \
+    " version of this function."                                \
+)
+
+    result = 0;
+
+    gstate = PyGILState_Ensure();
+
+    pyobj = pygobject_new(G_OBJECT(a));
+
+    if (has_python_method(pyobj, "__cmp__"))
+    {
+        args = PyTuple_New(1);
+        PyTuple_SetItem(args, 0, pygobject_new(G_OBJECT(b)));
+
+        pyret = run_python_method(pyobj, "__cmp__", args);
+
+        if (pyret != NULL)
+        {
+            if (PyLong_Check(pyret))
+                result = PyLong_AsLong(pyret);
+        }
+
+        Py_DECREF(args);
+
+        Py_XDECREF(pyret);
+
+    }
+
+    Py_DECREF(pyobj);
+
+    PyGILState_Release(gstate);
+
+    return result;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : feeder = fournisseur à traiter.                              *
+*                line   = ligne tampon où imprimer l'élément donné.           *
+*                                                                             *
+*  Description : Traduit un fournisseur en version humainement lisible.       *
+*                                                                             *
+*  Retour      : -                                                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static void py_proxy_feeder_print_wrapper(const GProxyFeeder *feeder, GBufferLine *line)
+{
+    PyGILState_STATE gstate;                /* Sauvegarde d'environnement  */
+    PyObject *pyobj;                        /* Objet Python concerné       */
+    PyObject *args;                         /* Arguments pour l'appel      */
+    PyObject *pyret;                        /* Bilan de consultation       */
+
+#define PROXY_FEEDER_PRINT_WRAPPER PYTHON_WRAPPER_DEF               \
+(                                                                   \
+    _print, "$self, line, /",                                       \
+    METH_VARARGS,                                                   \
+    "Abstract method used to generate content into a rendering"     \
+    " line, which is a provided pychrysalide.glibext.BufferLine"    \
+    " instance."                                                    \
+)
+
+    gstate = PyGILState_Ensure();
+
+    pyobj = pygobject_new(G_OBJECT(feeder));
+
+    if (has_python_method(pyobj, "_print"))
+    {
+        args = PyTuple_New(1);
+        PyTuple_SetItem(args, 0, pygobject_new(G_OBJECT(line)));
+
+        pyret = run_python_method(pyobj, "_print", args);
+
+        Py_XDECREF(pyret);
+
+        Py_DECREF(args);
+
+    }
+
+    Py_DECREF(pyobj);
+
+    PyGILState_Release(gstate);
+
+}
+
+
+
+/* ---------------------------------------------------------------------------------- */
+/*                           CONNEXION AVEC L'API DE PYTHON                           */
+/* ---------------------------------------------------------------------------------- */
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : a  = premier object Python à consulter.                      *
+*                b  = second object Python à consulter.                       *
+*                op = type de comparaison menée.                              *
+*                                                                             *
+*  Description : Effectue une comparaison avec un objet Python 'ProxyFeeder'. *
+*                                                                             *
+*  Retour      : Bilan de l'opération.                                        *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static PyObject *py_proxy_feeder_richcompare(PyObject *a, PyObject *b, int op)
+{
+    PyObject *result;                       /* Bilan à retourner           */
+    int ret;                                /* Bilan de lecture des args.  */
+    const GProxyFeeder *feeder_a;           /* Premier élément à traiter   */
+    const GProxyFeeder *feeder_b;           /* Second élément à traiter    */
+    int status;                             /* Résultat d'une comparaison  */
+
+    ret = PyObject_IsInstance(b, (PyObject *)get_python_proxy_feeder_type());
+    if (!ret)
+    {
+        result = Py_NotImplemented;
+        goto cmp_done;
+    }
+
+    feeder_a = G_PROXY_FEEDER(pygobject_get(a));
+    feeder_b = G_PROXY_FEEDER(pygobject_get(b));
+
+    status = py_proxy_feeder___cmp___wrapper(feeder_a, feeder_b);
+
+    result = status_to_rich_cmp_state(status, op);
+
+ cmp_done:
+
+    Py_INCREF(result);
+
+    return result;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : self = classe représentant un générateur à manipuler.        *
+*                args = arguments fournis à l'appel.                          *
+*                                                                             *
+*  Description : Traduit un fournisseur en version humainement lisible.       *
+*                                                                             *
+*  Retour      : -                                                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static PyObject *py_proxy_feeder_print(PyObject *self, PyObject *args)
+{
+    GBufferLine *line;                      /* Ligne de rendu à compléter  */
+    GProxyFeeder *feeder;                   /* Version native              */
+    int ret;                                /* Bilan de lecture des args.  */
+
+#define PROXY_FEEDER_PRINT_METHOD PYTHON_METHOD_DEF                     \
+(                                                                       \
+    print, "$self, line, /",                                            \
+    METH_VARARGS, py_proxy_feeder,                                      \
+    "Produce output into a rendering line.\n"                           \
+    "\n"                                                                \
+    "The provided line is a pychrysalide.glibext.BufferLine instance."  \
+)
+
+    ret = PyArg_ParseTuple(args, "O&", convert_to_buffer_line, &line);
+    if (!ret) return NULL;
+
+    feeder = G_PROXY_FEEDER(pygobject_get(self));
+
+    g_proxy_feeder_print(feeder, line);
+
+    Py_RETURN_NONE;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : -                                                            *
+*                                                                             *
+*  Description : Fournit un accès à une définition de type à diffuser.        *
+*                                                                             *
+*  Retour      : Définition d'objet pour Python.                              *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+PyTypeObject *get_python_proxy_feeder_type(void)
+{
+    static PyMethodDef py_proxy_feeder_methods[] = {
+        PROXY_FEEDER_CMP_WRAPPER,
+        PROXY_FEEDER_PRINT_WRAPPER,
+        PROXY_FEEDER_PRINT_METHOD,
+        { NULL }
+    };
+
+    static PyGetSetDef py_proxy_feeder_getseters[] = {
+        { NULL }
+    };
+
+    static PyTypeObject py_proxy_feeder_type = {
+
+        PyVarObject_HEAD_INIT(NULL, 0)
+
+        .tp_name        = "pychrysalide.arch.operands.ProxyFeeder",
+        .tp_basicsize   = sizeof(PyObject),
+
+        .tp_flags       = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
+
+        .tp_doc         = PROXY_FEEDER_DOC,
+
+        .tp_richcompare = py_proxy_feeder_richcompare,
+
+        .tp_methods     = py_proxy_feeder_methods,
+        .tp_getset      = py_proxy_feeder_getseters
+
+    };
+
+    return &py_proxy_feeder_type;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : -                                                            *
+*                                                                             *
+*  Description : Prend en charge l'objet 'pychrysalide.arch.ProxyFeeder'.     *
+*                                                                             *
+*  Retour      : Bilan de l'opération.                                        *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+bool ensure_python_proxy_feeder_is_registered(void)
+{
+    PyTypeObject *type;                     /* Type Python 'ProxyFeeder'   */
+    PyObject *module;                       /* Module à recompléter        */
+    PyObject *dict;                         /* Dictionnaire du module      */
+
+    static GInterfaceInfo info = {          /* Paramètres d'inscription    */
+
+        .interface_init = (GInterfaceInitFunc)py_proxy_feeder_interface_init,
+        .interface_finalize = NULL,
+        .interface_data = NULL,
+
+    };
+
+    type = get_python_proxy_feeder_type();
+
+    if (!PyType_HasFeature(type, Py_TPFLAGS_READY))
+    {
+        module = get_access_to_python_module("pychrysalide.arch.operands");
+
+        dict = PyModule_GetDict(module);
+
+        if (!register_interface_for_pygobject_2(dict, G_TYPE_PROXY_FEEDER, type, &info))
+            return false;
+
+    }
+
+    return true;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : arg = argument quelconque à tenter de convertir.             *
+*                dst = destination des valeurs récupérées en cas de succès.   *
+*                                                                             *
+*  Description : Tente de convertir en fournisseur intermédiaire.             *
+*                                                                             *
+*  Retour      : Bilan de l'opération, voire indications supplémentaires.     *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+int convert_to_proxy_feeder(PyObject *arg, void *dst)
+{
+    int result;                             /* Bilan à retourner           */
+
+    result = PyObject_IsInstance(arg, (PyObject *)get_python_proxy_feeder_type());
+
+    switch (result)
+    {
+        case -1:
+            /* L'exception est déjà fixée par Python */
+            result = 0;
+            break;
+
+        case 0:
+            PyErr_SetString(PyExc_TypeError, "unable to convert the provided argument to proxy feeder");
+            break;
+
+        case 1:
+            *((GProxyFeeder **)dst) = G_PROXY_FEEDER(pygobject_get(arg));
+            break;
+
+        default:
+            assert(false);
+            break;
+
+    }
+
+    return result;
+
+}
diff --git a/plugins/pychrysalide/arch/feeder.h b/plugins/pychrysalide/arch/operands/feeder.h
index 2655bbc..80a5e7d 100644
--- a/plugins/pychrysalide/arch/feeder.h
+++ b/plugins/pychrysalide/arch/operands/feeder.h
@@ -1,6 +1,6 @@
 
 /* Chrysalide - Outil d'analyse de fichiers binaires
- * feeder.h - prototypes pour l'équivalent Python du fichier "arch/feeder.h"
+ * feeder.h - prototypes pour l'équivalent Python du fichier "arch/operands/feeder.h"
  *
  * Copyright (C) 2018 Cyrille Bagard
  *
@@ -22,8 +22,8 @@
  */
 
 
-#ifndef _PLUGINS_PYCHRYSALIDE_ARCH_FEEDER_H
-#define _PLUGINS_PYCHRYSALIDE_ARCH_FEEDER_H
+#ifndef _PLUGINS_PYCHRYSALIDE_ARCH_OPERANDS_FEEDER_H
+#define _PLUGINS_PYCHRYSALIDE_ARCH_OPERANDS_FEEDER_H
 
 
 #include <Python.h>
@@ -37,6 +37,9 @@ PyTypeObject *get_python_proxy_feeder_type(void);
 /* Prend en charge l'objet 'pychrysalide.arch.ProxyFeeder'. */
 bool ensure_python_proxy_feeder_is_registered(void);
 
+/* Tente de convertir en fournisseur intermédiaire. */
+int convert_to_proxy_feeder(PyObject *, void *);
 
 
-#endif  /* _PLUGINS_PYCHRYSALIDE_ARCH_FEEDER_H */
+
+#endif  /* _PLUGINS_PYCHRYSALIDE_ARCH_OPERANDS_FEEDER_H */
diff --git a/plugins/pychrysalide/arch/operands/module.c b/plugins/pychrysalide/arch/operands/module.c
index cbd0bde..15d7835 100644
--- a/plugins/pychrysalide/arch/operands/module.c
+++ b/plugins/pychrysalide/arch/operands/module.c
@@ -28,7 +28,9 @@
 #include <assert.h>
 
 
+#include "feeder.h"
 #include "immediate.h"
+#include "proxy.h"
 #include "register.h"
 #include "rename.h"
 #include "targetable.h"
@@ -97,8 +99,10 @@ bool populate_arch_operands_module(void)
 
     result = true;
 
+    if (result) result = ensure_python_proxy_feeder_is_registered();
     if (result) result = ensure_python_imm_operand_is_registered();
     if (result) result = ensure_python_known_imm_operand_is_registered();
+    if (result) result = ensure_python_proxy_operand_is_registered();
     if (result) result = ensure_python_register_operand_is_registered();
     if (result) result = ensure_python_renamed_operand_is_registered();
     if (result) result = ensure_python_renameable_operand_is_registered();
diff --git a/plugins/pychrysalide/arch/operands/proxy.c b/plugins/pychrysalide/arch/operands/proxy.c
new file mode 100644
index 0000000..401fe40
--- /dev/null
+++ b/plugins/pychrysalide/arch/operands/proxy.c
@@ -0,0 +1,383 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * proxy.c - équivalent Python du fichier "arch/operands/proxy.c"
+ *
+ * Copyright (C) 2020 Cyrille Bagard
+ *
+ *  This file is part of Chrysalide.
+ *
+ *  Chrysalide is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  Chrysalide 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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+
+#include "proxy.h"
+
+
+#include <pygobject.h>
+
+
+#include <i18n.h>
+#include <arch/operands/proxy-int.h>
+#include <plugins/dt.h>
+
+
+#include "feeder.h"
+#include "../operand.h"
+#include "../../access.h"
+#include "../../helpers.h"
+
+
+
+/* ------------------------ GLUE POUR CREATION DEPUIS PYTHON ------------------------ */
+
+
+/* Accompagne la création d'une instance dérivée en Python. */
+static PyObject *py_proxy_operand_new(PyTypeObject *, PyObject *, PyObject *);
+
+/* Initialise la classe des descriptions de fichier binaire. */
+static void py_proxy_operand_init_gclass(GProxyOperandClass *, gpointer);
+
+/* Initialise une instance sur la base du dérivé de GObject. */
+static int py_proxy_operand_init(PyObject *, PyObject *, PyObject *);
+
+
+
+/* ------------------ OPERANDES CONSTITUANT DE PURS INTERMEDIAIRES ------------------ */
+
+
+/* Fournit le fournisseur représenté par l'opérande. */
+static PyObject *py_proxy_operand_get_feeder(PyObject *, void *);
+
+
+
+/* ---------------------------------------------------------------------------------- */
+/*                          GLUE POUR CREATION DEPUIS PYTHON                          */
+/* ---------------------------------------------------------------------------------- */
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : type = type du nouvel objet à mettre en place.               *
+*                args = éventuelle liste d'arguments.                         *
+*                kwds = éventuel dictionnaire de valeurs mises à disposition. *
+*                                                                             *
+*  Description : Accompagne la création d'une instance dérivée en Python.     *
+*                                                                             *
+*  Retour      : Nouvel objet Python mis en place ou NULL en cas d'échec.     *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static PyObject *py_proxy_operand_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
+{
+    PyObject *result;                       /* Objet à retourner           */
+    PyTypeObject *base;                     /* Type de base à dériver      */
+    bool first_time;                        /* Evite les multiples passages*/
+    GType gtype;                            /* Nouveau type de processeur  */
+    bool status;                            /* Bilan d'un enregistrement   */
+
+    /* Validations diverses */
+
+    base = get_python_proxy_operand_type();
+
+    if (type == base)
+        goto simple_way;
+
+    /* Mise en place d'un type dédié */
+
+    first_time = (g_type_from_name(type->tp_name) == 0);
+
+    gtype = build_dynamic_type(G_TYPE_PROXY_OPERAND, type->tp_name,
+                               (GClassInitFunc)py_proxy_operand_init_gclass, NULL, NULL);
+
+    if (first_time)
+    {
+        status = register_class_for_dynamic_pygobject(gtype, type, base);
+
+        if (!status)
+        {
+            result = NULL;
+            goto exit;
+        }
+
+    }
+
+    /* On crée, et on laisse ensuite la main à PyGObject_Type.tp_init() */
+
+ simple_way:
+
+    result = PyType_GenericNew(type, args, kwds);
+
+ exit:
+
+    return result;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : class  = classe à initialiser.                               *
+*                unused = données non utilisées ici.                          *
+*                                                                             *
+*  Description : Initialise la classe des descriptions de fichier binaire.    *
+*                                                                             *
+*  Retour      : -                                                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static void py_proxy_operand_init_gclass(GProxyOperandClass *class, gpointer unused)
+{
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : self = objet à initialiser (théoriquement).                  *
+*                args = arguments fournis à l'appel.                          *
+*                kwds = arguments de type key=val fournis.                    *
+*                                                                             *
+*  Description : Initialise une instance sur la base du dérivé de GObject.    *
+*                                                                             *
+*  Retour      : 0.                                                           *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static int py_proxy_operand_init(PyObject *self, PyObject *args, PyObject *kwds)
+{
+    GProxyFeeder *feeder;                   /* Fournisseur transmis        */
+    int ret;                                /* Bilan de lecture des args.  */
+    PyObject *new_args;                     /* Nouveaux arguments épurés   */
+    PyObject *new_kwds;                     /* Nouveau dictionnaire épuré  */
+    GProxyOperand *operand;                 /* Opérande à manipuler        */
+
+#define PROXY_OPERAND_DOC                                                   \
+    "The ProxyOperand object behaves like a proxy operand for an object"    \
+    " which can feed the operand with content.\n"                           \
+    "\n"                                                                    \
+    "Instances can be created using the following constructor:\n"           \
+    "\n"                                                                    \
+    "    ProxyOperand(feeder)"                                              \
+    "\n"                                                                    \
+    "Where feeder is an instance implementing the"                          \
+    " pychrysalide.arch.operands.ProxyFeeder interface."
+
+    /* Récupération des paramètres */
+
+    ret = PyArg_ParseTuple(args, "O&", convert_to_proxy_feeder, &feeder);
+    if (!ret) return -1;
+
+    /* Initialisation d'un objet GLib */
+
+    new_args = PyTuple_New(0);
+    new_kwds = PyDict_New();
+
+    ret = PyGObject_Type.tp_init(self, new_args, new_kwds);
+
+    Py_DECREF(new_kwds);
+    Py_DECREF(new_args);
+
+    if (ret == -1) return -1;
+
+    /* Eléments de base */
+
+    operand = G_PROXY_OPERAND(pygobject_get(self));
+
+    g_object_ref(G_OBJECT(feeder));
+    operand->feeder = feeder;
+
+    return 0;
+
+}
+
+
+
+/* ---------------------------------------------------------------------------------- */
+/*                    OPERANDES CONSTITUANT DE PURS INTERMEDIAIRES                    */
+/* ---------------------------------------------------------------------------------- */
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : self    = objet Python concerné par l'appel.                 *
+*                closure = non utilisé ici.                                   *
+*                                                                             *
+*  Description : Fournit le fournisseur représenté par l'opérande.            *
+*                                                                             *
+*  Retour      : Fournisseur associé à l'opérande.                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static PyObject *py_proxy_operand_get_feeder(PyObject *self, void *closure)
+{
+    PyObject *result;                       /* Instance Python à retourner */
+    GProxyOperand *operand;                 /* Version GLib de l'opérande  */
+    GProxyFeeder *feeder;                   /* Fournisseur lié à l'opérande*/
+
+#define PROXY_OPERAND_FEEDER_ATTRIB PYTHON_GET_DEF_FULL         \
+(                                                               \
+    feeder, py_proxy_operand,                                   \
+    "Give the proxy feeder linked to the operand.\n"            \
+    "\n"                                                        \
+    "This feeder is a pychrysalide.arch.operands.ProxyFeeder"   \
+    " providing content for the operand."                       \
+)
+
+    operand = G_PROXY_OPERAND(pygobject_get(self));
+
+    feeder = g_proxy_operand_get_feeder(operand);
+
+    result = pygobject_new(G_OBJECT(feeder));
+    g_object_unref(feeder);
+
+    return result;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : -                                                            *
+*                                                                             *
+*  Description : Fournit un accès à une définition de type à diffuser.        *
+*                                                                             *
+*  Retour      : Définition d'objet pour Python.                              *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+PyTypeObject *get_python_proxy_operand_type(void)
+{
+    static PyMethodDef py_proxy_operand_methods[] = {
+        { NULL }
+    };
+
+    static PyGetSetDef py_proxy_operand_getseters[] = {
+        PROXY_OPERAND_FEEDER_ATTRIB,
+        { NULL }
+    };
+
+    static PyTypeObject py_proxy_operand_type = {
+
+        PyVarObject_HEAD_INIT(NULL, 0)
+
+        .tp_name        = "pychrysalide.arch.operands.ProxyOperand",
+        .tp_basicsize   = sizeof(PyGObject),
+
+        .tp_flags       = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
+
+        .tp_doc         = PROXY_OPERAND_DOC,
+
+        .tp_methods     = py_proxy_operand_methods,
+        .tp_getset      = py_proxy_operand_getseters,
+
+        .tp_init        = py_proxy_operand_init,
+        .tp_new         = py_proxy_operand_new,
+
+    };
+
+    return &py_proxy_operand_type;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : module = module dont la définition est à compléter.          *
+*                                                                             *
+*  Description : Prend en charge l'objet 'pychrysalide.arch.ArchOperand'.     *
+*                                                                             *
+*  Retour      : Bilan de l'opération.                                        *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+bool ensure_python_proxy_operand_is_registered(void)
+{
+    PyTypeObject *type;                     /* Type Python 'ArchOperand'   */
+    PyObject *module;                       /* Module à recompléter        */
+    PyObject *dict;                         /* Dictionnaire du module      */
+
+    type = get_python_proxy_operand_type();
+
+    if (!PyType_HasFeature(type, Py_TPFLAGS_READY))
+    {
+        module = get_access_to_python_module("pychrysalide.arch.operands");
+
+        dict = PyModule_GetDict(module);
+
+        if (!register_class_for_pygobject(dict, G_TYPE_PROXY_OPERAND, type, get_python_arch_operand_type()))
+            return false;
+
+    }
+
+    return true;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : arg = argument quelconque à tenter de convertir.             *
+*                dst = destination des valeurs récupérées en cas de succès.   *
+*                                                                             *
+*  Description : Tente de convertir en opérande renvoyant vers un élément.    *
+*                                                                             *
+*  Retour      : Bilan de l'opération, voire indications supplémentaires.     *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+int convert_to_proxy_operand(PyObject *arg, void *dst)
+{
+    int result;                             /* Bilan à retourner           */
+
+    result = PyObject_IsInstance(arg, (PyObject *)get_python_proxy_operand_type());
+
+    switch (result)
+    {
+        case -1:
+            /* L'exception est déjà fixée par Python */
+            result = 0;
+            break;
+
+        case 0:
+            PyErr_SetString(PyExc_TypeError, "unable to convert the provided argument to proxy operand");
+            break;
+
+        case 1:
+            *((GProxyOperand **)dst) = G_PROXY_OPERAND(pygobject_get(arg));
+            break;
+
+        default:
+            assert(false);
+            break;
+
+    }
+
+    return result;
+
+}
diff --git a/plugins/pychrysalide/arch/operands/proxy.h b/plugins/pychrysalide/arch/operands/proxy.h
new file mode 100644
index 0000000..4fdb6f0
--- /dev/null
+++ b/plugins/pychrysalide/arch/operands/proxy.h
@@ -0,0 +1,48 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * proxy.h - prototypes pour l'équivalent Python du fichier "arch/operands/proxy.h"
+ *
+ * Copyright (C) 2020 Cyrille Bagard
+ *
+ *  This file is part of Chrysalide.
+ *
+ *  Chrysalide is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  Chrysalide 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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+
+#ifndef _PLUGINS_PYCHRYSALIDE_ARCH_OPERANDS_PROXY_H
+#define _PLUGINS_PYCHRYSALIDE_ARCH_OPERANDS_PROXY_H
+
+
+#include <Python.h>
+#include <stdbool.h>
+
+
+
+/* ------------------ OPERANDES CONSTITUANT DE PURS INTERMEDIAIRES ------------------ */
+
+
+/* Fournit un accès à une définition de type à diffuser. */
+PyTypeObject *get_python_proxy_operand_type(void);
+
+/* Prend en charge l'objet 'pychrysalide.arch.operands.ProxyOperand'. */
+bool ensure_python_proxy_operand_is_registered(void);
+
+/* Tente de convertir en opérande renvoyant vers un élément. */
+int convert_to_proxy_operand(PyObject *, void *);
+
+
+
+#endif  /* _PLUGINS_PYCHRYSALIDE_ARCH_OPERANDS_PROXY_H */
diff --git a/plugins/pychrysalide/format/strsym.c b/plugins/pychrysalide/format/strsym.c
index 9c86df4..c85d61f 100644
--- a/plugins/pychrysalide/format/strsym.c
+++ b/plugins/pychrysalide/format/strsym.c
@@ -41,8 +41,8 @@
 #include "symbol.h"
 #include "../access.h"
 #include "../helpers.h"
-#include "../arch/feeder.h"
 #include "../arch/vmpa.h"
+#include "../arch/operands/feeder.h"
 
 
 
diff --git a/plugins/pychrysalide/glibext/linegen.c b/plugins/pychrysalide/glibext/linegen.c
index 3214cc9..6d29dbc 100644
--- a/plugins/pychrysalide/glibext/linegen.c
+++ b/plugins/pychrysalide/glibext/linegen.c
@@ -686,9 +686,10 @@ static PyObject *py_line_generator_print(PyObject *self, PyObject *args)
     METH_VARARGS, py_line_generator,                                \
     "Produce output into a rendering line with optional content.\n" \
     "\n"                                                            \
-    "The line index and the number of repetitions (only relevant"   \
-    " if the generator produces several lines) give indications"    \
-    " about the current rendering position.\n"                      \
+    "The provided line is a pychrysalide.glibext.BufferLine"        \
+    " instance. The index and the number of repetitions (only"      \
+    " relevant if the generator produces several lines) give"       \
+    " indications about the current rendering position.\n"          \
     "\n"                                                            \
     "If set, the content is a pychrysalide.analysis.BinContent"     \
     " instance providing access to the processed binary data."      \