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valaccodestructmodule.vala
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valaccodestructmodule.vala
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/* valaccodestructmodule.vala
*
* Copyright (C) 2006-2009 Jürg Billeter
* Copyright (C) 2006-2008 Raffaele Sandrini
*
* 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 2.1 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Author:
* Jürg Billeter <j@bitron.ch>
* Raffaele Sandrini <raffaele@sandrini.ch>
*/
using GLib;
public abstract class Vala.CCodeStructModule : CCodeBaseModule {
public override void generate_struct_declaration (Struct st, CCodeFile decl_space) {
if (add_symbol_declaration (decl_space, st, get_ccode_name (st))) {
return;
}
if (st.is_boolean_type () || st.is_integer_type () || st.is_floating_type ()) {
if (st.base_struct != null) {
generate_struct_declaration (st.base_struct, decl_space);
decl_space.add_type_declaration (new CCodeTypeDefinition (get_ccode_name (st.base_struct), new CCodeVariableDeclarator (get_ccode_name (st))));
} else {
string typename = null;
if (st.is_boolean_type ()) {
// typedef for boolean types
decl_space.add_include ("stdbool.h");
typename = "bool";
} else if (st.is_integer_type ()) {
// typedef for integral types
decl_space.add_include ("stdint.h");
typename = "%sint%d_t".printf (st.signed ? "" : "u", st.width);
} else if (st.is_floating_type ()) {
// typedef for floating types
typename = (st.width == 64 ? "double" : "float");
}
decl_space.add_type_declaration (new CCodeTypeDefinition (typename, new CCodeVariableDeclarator (get_ccode_name (st))));
}
return;
}
if (context.profile == Profile.GOBJECT) {
if (get_ccode_has_type_id (st)) {
decl_space.add_include ("glib-object.h");
decl_space.add_type_declaration (new CCodeNewline ());
var macro = "(%s_get_type ())".printf (get_ccode_lower_case_name (st, null));
decl_space.add_type_declaration (new CCodeMacroReplacement (get_ccode_type_id (st), macro));
var type_fun = new StructRegisterFunction (st);
type_fun.init_from_type (context, false, true);
decl_space.add_type_member_declaration (type_fun.get_declaration ());
}
}
if (st.base_struct == null) {
decl_space.add_type_declaration (new CCodeTypeDefinition ("struct _%s".printf (get_ccode_name (st)), new CCodeVariableDeclarator (get_ccode_name (st))));
} else {
decl_space.add_type_declaration (new CCodeTypeDefinition (get_ccode_name (st.base_struct), new CCodeVariableDeclarator (get_ccode_name (st))));
}
var instance_struct = new CCodeStruct ("_%s".printf (get_ccode_name (st)));
instance_struct.modifiers |= (st.version.deprecated ? CCodeModifiers.DEPRECATED : 0);
foreach (Field f in st.get_fields ()) {
if (f.binding == MemberBinding.INSTANCE) {
generate_type_declaration (f.variable_type, decl_space);
CCodeModifiers modifiers = (f.is_volatile ? CCodeModifiers.VOLATILE : 0) | (f.version.deprecated ? CCodeModifiers.DEPRECATED : 0);
instance_struct.add_field (get_ccode_name (f.variable_type), get_ccode_name (f), modifiers, get_ccode_declarator_suffix (f.variable_type));
if (f.variable_type is ArrayType && get_ccode_array_length (f)) {
// create fields to store array dimensions
var array_type = (ArrayType) f.variable_type;
if (!array_type.fixed_length) {
var length_ctype = get_ccode_array_length_type (array_type);
for (int dim = 1; dim <= array_type.rank; dim++) {
string length_cname = get_variable_array_length_cname (f, dim);
instance_struct.add_field (length_ctype, length_cname);
}
if (array_type.rank == 1 && f.is_internal_symbol ()) {
instance_struct.add_field (length_ctype, get_array_size_cname (get_ccode_name (f)));
}
}
} else if (get_ccode_delegate_target (f)) {
var delegate_type = (DelegateType) f.variable_type;
if (delegate_type.delegate_symbol.has_target) {
// create field to store delegate target
instance_struct.add_field (get_ccode_name (delegate_target_type), get_ccode_delegate_target_name (f));
if (delegate_type.is_disposable ()) {
instance_struct.add_field (get_ccode_name (delegate_target_destroy_type), get_ccode_delegate_target_destroy_notify_name (f));
}
}
}
}
}
if (st.base_struct == null) {
decl_space.add_type_definition (instance_struct);
}
var function = new CCodeFunction (get_ccode_dup_function (st), get_ccode_name (st) + "*");
if (st.is_private_symbol ()) {
function.modifiers = CCodeModifiers.STATIC;
} else if (context.hide_internal && st.is_internal_symbol ()) {
function.modifiers = CCodeModifiers.INTERNAL;
}
function.add_parameter (new CCodeParameter ("self", "const " + get_ccode_name (st) + "*"));
decl_space.add_function_declaration (function);
function = new CCodeFunction (get_ccode_free_function (st), "void");
if (st.is_private_symbol ()) {
function.modifiers = CCodeModifiers.STATIC;
} else if (context.hide_internal && st.is_internal_symbol ()) {
function.modifiers = CCodeModifiers.INTERNAL;
}
function.add_parameter (new CCodeParameter ("self", get_ccode_name (st) + "*"));
decl_space.add_function_declaration (function);
if (st.is_disposable ()) {
function = new CCodeFunction (get_ccode_copy_function (st), "void");
if (st.is_private_symbol ()) {
function.modifiers = CCodeModifiers.STATIC;
} else if (context.hide_internal && st.is_internal_symbol ()) {
function.modifiers = CCodeModifiers.INTERNAL;
}
function.add_parameter (new CCodeParameter ("self", "const " + get_ccode_name (st) + "*"));
function.add_parameter (new CCodeParameter ("dest", get_ccode_name (st) + "*"));
decl_space.add_function_declaration (function);
function = new CCodeFunction (get_ccode_destroy_function (st), "void");
if (st.is_private_symbol ()) {
function.modifiers = CCodeModifiers.STATIC;
} else if (context.hide_internal && st.is_internal_symbol ()) {
function.modifiers = CCodeModifiers.INTERNAL;
}
function.add_parameter (new CCodeParameter ("self", get_ccode_name (st) + "*"));
decl_space.add_function_declaration (function);
}
}
public override void visit_struct (Struct st) {
push_context (new EmitContext (st));
push_line (st.source_reference);
if (get_ccode_has_type_id (st) && get_ccode_name (st).length < 3) {
st.error = true;
Report.error (st.source_reference, "Name `%s' is too short for struct using GType".printf (get_ccode_name (st)));
return;
}
var old_instance_finalize_context = instance_finalize_context;
instance_finalize_context = new EmitContext ();
generate_struct_declaration (st, cfile);
if (!st.is_internal_symbol ()) {
generate_struct_declaration (st, header_file);
}
if (!st.is_private_symbol ()) {
generate_struct_declaration (st, internal_header_file);
}
if (!st.is_boolean_type () && !st.is_integer_type () && !st.is_floating_type ()) {
if (st.is_disposable ()) {
begin_struct_destroy_function (st);
}
}
st.accept_children (this);
if (!st.is_boolean_type () && !st.is_integer_type () && !st.is_floating_type ()) {
if (st.is_disposable ()) {
add_struct_copy_function (st);
add_struct_destroy_function (st);
}
add_struct_dup_function (st);
add_struct_free_function (st);
}
instance_finalize_context = old_instance_finalize_context;
pop_line ();
pop_context ();
}
void add_struct_dup_function (Struct st) {
var function = new CCodeFunction (get_ccode_dup_function (st), get_ccode_name (st) + "*");
if (st.access == SymbolAccessibility.PRIVATE) {
function.modifiers = CCodeModifiers.STATIC;
}
function.add_parameter (new CCodeParameter ("self", "const " + get_ccode_name (st) + "*"));
push_function (function);
ccode.add_declaration (get_ccode_name (st) + "*", new CCodeVariableDeclarator ("dup"));
if (context.profile == Profile.GOBJECT) {
// g_new0 needs glib.h
cfile.add_include ("glib.h");
var creation_call = new CCodeFunctionCall (new CCodeIdentifier ("g_new0"));
creation_call.add_argument (new CCodeConstant (get_ccode_name (st)));
creation_call.add_argument (new CCodeConstant ("1"));
ccode.add_assignment (new CCodeIdentifier ("dup"), creation_call);
} else if (context.profile == Profile.POSIX) {
// calloc needs stdlib.h
cfile.add_include ("stdlib.h");
var creation_call = new CCodeFunctionCall (new CCodeIdentifier ("calloc"));
creation_call.add_argument (new CCodeConstant ("1"));
creation_call.add_argument (new CCodeIdentifier ("sizeof (%s*)".printf (get_ccode_name (st))));
ccode.add_assignment (new CCodeIdentifier ("dup"), creation_call);
}
if (st.is_disposable ()) {
var copy_call = new CCodeFunctionCall (new CCodeIdentifier (get_ccode_copy_function (st)));
copy_call.add_argument (new CCodeIdentifier ("self"));
copy_call.add_argument (new CCodeIdentifier ("dup"));
ccode.add_expression (copy_call);
} else {
cfile.add_include ("string.h");
var sizeof_call = new CCodeFunctionCall (new CCodeIdentifier ("sizeof"));
sizeof_call.add_argument (new CCodeConstant (get_ccode_name (st)));
var copy_call = new CCodeFunctionCall (new CCodeIdentifier ("memcpy"));
copy_call.add_argument (new CCodeIdentifier ("dup"));
copy_call.add_argument (new CCodeIdentifier ("self"));
copy_call.add_argument (sizeof_call);
ccode.add_expression (copy_call);
}
ccode.add_return (new CCodeIdentifier ("dup"));
pop_function ();
cfile.add_function (function);
}
void add_struct_free_function (Struct st) {
var function = new CCodeFunction (get_ccode_free_function (st), "void");
if (st.is_private_symbol ()) {
function.modifiers = CCodeModifiers.STATIC;
} else if (context.hide_internal && st.is_internal_symbol ()) {
function.modifiers = CCodeModifiers.INTERNAL;
}
function.add_parameter (new CCodeParameter ("self", get_ccode_name (st) + "*"));
push_function (function);
if (st.is_disposable ()) {
var destroy_call = new CCodeFunctionCall (new CCodeIdentifier (get_ccode_destroy_function (st)));
destroy_call.add_argument (new CCodeIdentifier ("self"));
ccode.add_expression (destroy_call);
}
if (context.profile == Profile.GOBJECT) {
// g_free needs glib.h
cfile.add_include ("glib.h");
var free_call = new CCodeFunctionCall (new CCodeIdentifier ("g_free"));
free_call.add_argument (new CCodeIdentifier ("self"));
ccode.add_expression (free_call);
} else if (context.profile == Profile.POSIX) {
// free needs stdlib.h
cfile.add_include ("stdlib.h");
var free_call = new CCodeFunctionCall (new CCodeIdentifier ("free"));
free_call.add_argument (new CCodeIdentifier ("self"));
ccode.add_expression (free_call);
}
pop_function ();
cfile.add_function (function);
}
void add_struct_copy_function (Struct st) {
var function = new CCodeFunction (get_ccode_copy_function (st), "void");
if (st.is_private_symbol ()) {
function.modifiers = CCodeModifiers.STATIC;
} else if (context.hide_internal && st.is_internal_symbol ()) {
function.modifiers = CCodeModifiers.INTERNAL;
}
function.add_parameter (new CCodeParameter ("self", "const " + get_ccode_name (st) + "*"));
function.add_parameter (new CCodeParameter ("dest", get_ccode_name (st) + "*"));
push_function (function);
var dest_struct = new GLibValue (get_data_type_for_symbol (st), new CCodeIdentifier ("(*dest)"), true);
unowned Struct sym = st;
while (sym.base_struct != null) {
sym = sym.base_struct;
}
foreach (var f in sym.get_fields ()) {
if (f.binding == MemberBinding.INSTANCE) {
var value = load_field (f, load_this_parameter ((TypeSymbol) st));
if ((!(f.variable_type is DelegateType) || get_ccode_delegate_target (f)) && requires_copy (f.variable_type)) {
value = copy_value (value, f);
if (value == null) {
// error case, continue to avoid critical
continue;
}
}
store_field (f, dest_struct, value);
}
}
pop_function ();
cfile.add_function (function);
}
void begin_struct_destroy_function (Struct st) {
push_context (instance_finalize_context);
var function = new CCodeFunction (get_ccode_destroy_function (st), "void");
if (st.is_private_symbol ()) {
function.modifiers = CCodeModifiers.STATIC;
} else if (context.hide_internal && st.is_internal_symbol ()) {
function.modifiers = CCodeModifiers.INTERNAL;
}
function.add_parameter (new CCodeParameter ("self", get_ccode_name (st) + "*"));
push_function (function);
pop_context ();
}
void add_struct_destroy_function (Struct st) {
cfile.add_function (instance_finalize_context.ccode);
}
}