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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;
internal class Vala.CCodeStructModule : CCodeBaseModule {
public CCodeStructModule (CCodeGenerator codegen, CCodeModule? next) {
base (codegen, next);
}
public override void generate_struct_declaration (Struct st, CCodeDeclarationSpace decl_space) {
if (decl_space.add_symbol_declaration (st, st.get_cname ())) {
return;
}
var instance_struct = new CCodeStruct ("_%s".printf (st.get_cname ()));
foreach (Field f in st.get_fields ()) {
string field_ctype = f.field_type.get_cname ();
if (f.is_volatile) {
field_ctype = "volatile " + field_ctype;
}
if (f.binding == MemberBinding.INSTANCE) {
instance_struct.add_field (field_ctype, f.get_cname ());
if (f.field_type is ArrayType && !f.no_array_length) {
// create fields to store array dimensions
var array_type = (ArrayType) f.field_type;
var len_type = int_type.copy ();
for (int dim = 1; dim <= array_type.rank; dim++) {
instance_struct.add_field (len_type.get_cname (), head.get_array_length_cname (f.name, dim));
}
if (array_type.rank == 1 && f.is_internal_symbol ()) {
instance_struct.add_field (len_type.get_cname (), head.get_array_size_cname (f.name));
}
} else if (f.field_type is DelegateType) {
var delegate_type = (DelegateType) f.field_type;
if (delegate_type.delegate_symbol.has_target) {
// create field to store delegate target
instance_struct.add_field ("gpointer", get_delegate_target_cname (f.name));
}
}
}
}
decl_space.add_type_declaration (new CCodeTypeDefinition ("struct _%s".printf (st.get_cname ()), new CCodeVariableDeclarator (st.get_cname ())));
if (st.source_reference.comment != null) {
decl_space.add_type_definition (new CCodeComment (st.source_reference.comment));
}
decl_space.add_type_definition (instance_struct);
}
public override void visit_struct (Struct st) {
var old_type_symbol = current_type_symbol;
var old_instance_finalize_fragment = instance_finalize_fragment;
current_type_symbol = st;
instance_finalize_fragment = new CCodeFragment ();
generate_struct_declaration (st, source_declarations);
if (!st.is_internal_symbol ()) {
generate_struct_declaration (st, header_declarations);
}
st.accept_children (codegen);
if (st.is_disposable ()) {
add_struct_copy_function (st);
add_struct_destroy_function (st);
}
add_struct_dup_function (st);
add_struct_free_function (st);
current_type_symbol = old_type_symbol;
instance_finalize_fragment = old_instance_finalize_fragment;
}
void add_struct_dup_function (Struct st) {
var function = new CCodeFunction (st.get_dup_function (), st.get_cname () + "*");
if (st.access == SymbolAccessibility.PRIVATE) {
function.modifiers = CCodeModifiers.STATIC;
}
function.add_parameter (new CCodeFormalParameter ("self", "const " + st.get_cname () + "*"));
source_declarations.add_type_member_declaration (function.copy ());
var cblock = new CCodeBlock ();
var cdecl = new CCodeDeclaration (st.get_cname () + "*");
cdecl.add_declarator (new CCodeVariableDeclarator ("dup"));
cblock.add_statement (cdecl);
var creation_call = new CCodeFunctionCall (new CCodeIdentifier ("g_new0"));
creation_call.add_argument (new CCodeConstant (st.get_cname ()));
creation_call.add_argument (new CCodeConstant ("1"));
cblock.add_statement (new CCodeExpressionStatement (new CCodeAssignment (new CCodeIdentifier ("dup"), creation_call)));
if (st.is_disposable ()) {
var copy_call = new CCodeFunctionCall (new CCodeIdentifier (st.get_copy_function ()));
copy_call.add_argument (new CCodeIdentifier ("self"));
copy_call.add_argument (new CCodeIdentifier ("dup"));
cblock.add_statement (new CCodeExpressionStatement (copy_call));
} else {
var sizeof_call = new CCodeFunctionCall (new CCodeIdentifier ("sizeof"));
sizeof_call.add_argument (new CCodeConstant (st.get_cname ()));
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);
cblock.add_statement (new CCodeExpressionStatement (copy_call));
}
cblock.add_statement (new CCodeReturnStatement (new CCodeIdentifier ("dup")));
function.block = cblock;
source_type_member_definition.append (function);
}
void add_struct_free_function (Struct st) {
var function = new CCodeFunction (st.get_free_function (), "void");
if (st.access == SymbolAccessibility.PRIVATE) {
function.modifiers = CCodeModifiers.STATIC;
}
function.add_parameter (new CCodeFormalParameter ("self", st.get_cname () + "*"));
source_declarations.add_type_member_declaration (function.copy ());
var cblock = new CCodeBlock ();
if (st.is_disposable ()) {
var destroy_call = new CCodeFunctionCall (new CCodeIdentifier (st.get_destroy_function ()));
destroy_call.add_argument (new CCodeIdentifier ("self"));
cblock.add_statement (new CCodeExpressionStatement (destroy_call));
}
var free_call = new CCodeFunctionCall (new CCodeIdentifier ("g_free"));
free_call.add_argument (new CCodeIdentifier ("self"));
cblock.add_statement (new CCodeExpressionStatement (free_call));
function.block = cblock;
source_type_member_definition.append (function);
}
void add_struct_copy_function (Struct st) {
var function = new CCodeFunction (st.get_copy_function (), "void");
if (st.access == SymbolAccessibility.PRIVATE) {
function.modifiers = CCodeModifiers.STATIC;
}
function.add_parameter (new CCodeFormalParameter ("self", "const " + st.get_cname () + "*"));
function.add_parameter (new CCodeFormalParameter ("dest", st.get_cname () + "*"));
source_declarations.add_type_member_declaration (function.copy ());
var cblock = new CCodeBlock ();
var cfrag = new CCodeFragment ();
cblock.add_statement (cfrag);
foreach (var f in st.get_fields ()) {
if (f.binding == MemberBinding.INSTANCE) {
CCodeExpression copy = new CCodeMemberAccess.pointer (new CCodeIdentifier ("self"), f.name);
if (requires_copy (f.field_type)) {
var this_access = new MemberAccess.simple ("this");
this_access.value_type = get_data_type_for_symbol ((TypeSymbol) f.parent_symbol);
this_access.ccodenode = new CCodeIdentifier ("(*self)");
var ma = new MemberAccess (this_access, f.name);
ma.symbol_reference = f;
copy = get_ref_cexpression (f.field_type, copy, ma, f);
}
var dest = new CCodeMemberAccess.pointer (new CCodeIdentifier ("dest"), f.name);
cblock.add_statement (new CCodeExpressionStatement (new CCodeAssignment (dest, copy)));
var array_type = f.field_type as ArrayType;
if (array_type != null) {
for (int dim = 1; dim <= array_type.rank; dim++) {
var len_src = new CCodeMemberAccess.pointer (new CCodeIdentifier ("self"), get_array_length_cname (f.name, dim));
var len_dest = new CCodeMemberAccess.pointer (new CCodeIdentifier ("dest"), get_array_length_cname (f.name, dim));
cblock.add_statement (new CCodeExpressionStatement (new CCodeAssignment (len_dest, len_src)));
}
}
}
}
append_temp_decl (cfrag, temp_vars);
temp_vars.clear ();
function.block = cblock;
source_type_member_definition.append (function);
}
void add_struct_destroy_function (Struct st) {
var function = new CCodeFunction (st.get_destroy_function (), "void");
if (st.access == SymbolAccessibility.PRIVATE) {
function.modifiers = CCodeModifiers.STATIC;
}
function.add_parameter (new CCodeFormalParameter ("self", st.get_cname () + "*"));
source_declarations.add_type_member_declaration (function.copy ());
var cblock = new CCodeBlock ();
cblock.add_statement (instance_finalize_fragment);
function.block = cblock;
source_type_member_definition.append (function);
}
}
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