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/* valadovaarraymodule.vala
*
* Copyright (C) 2006-2011 Jürg Billeter
*
* 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>
*/
public class Vala.DovaArrayModule : DovaMethodCallModule {
void append_initializer_list (CCodeExpression name_cnode, InitializerList initializer_list, ref int i) {
foreach (Expression e in initializer_list.get_initializers ()) {
ccode.add_assignment (new CCodeElementAccess (name_cnode, new CCodeConstant (i.to_string ())), get_cvalue (e));
i++;
}
}
public override void visit_array_creation_expression (ArrayCreationExpression expr) {
var array_type = expr.target_type as ArrayType;
if (array_type != null && array_type.fixed_length) {
// no heap allocation for fixed-length arrays
var temp_var = get_temp_variable (array_type, true, expr);
var name_cnode = new CCodeIdentifier (temp_var.name);
int i = 0;
emit_temp_var (temp_var);
append_initializer_list (name_cnode, expr.initializer_list, ref i);
set_cvalue (expr, name_cnode);
return;
}
generate_method_declaration ((Method) array_struct.scope.lookup ("create"), cfile);
var array_new = new CCodeFunctionCall (new CCodeIdentifier ("dova_array_create"));
array_new.add_argument (get_type_id_expression (expr.element_type));
// length of new array
array_new.add_argument (get_cvalue (expr.get_sizes ().get (0)));
var temp_var = get_temp_variable (expr.value_type, true, expr);
var name_cnode = get_variable_cexpression (temp_var.name);
emit_temp_var (temp_var);
ccode.add_assignment (name_cnode, array_new);
set_cvalue (expr, name_cnode);
}
public override void visit_element_access (ElementAccess expr) {
List<Expression> indices = expr.get_indices ();
var ccontainer = get_cvalue (expr.container);
var cindex = get_cvalue (indices[0]);
// access to element in an array
set_cvalue (expr, new CCodeElementAccess (ccontainer, cindex));
}
public override void visit_slice_expression (SliceExpression expr) {
var ccontainer = get_cvalue (expr.container);
var cstart = get_cvalue (expr.start);
var cstop = get_cvalue (expr.stop);
var array_type = (ArrayType) expr.container.value_type;
var array = new CCodeFunctionCall (new CCodeIdentifier ("dova_array"));
array.add_argument (new CCodeBinaryExpression (CCodeBinaryOperator.PLUS, new CCodeCastExpression (new CCodeMemberAccess (ccontainer, "data"), get_ccode_name (array_type.element_type) + "*"), cstart));
array.add_argument (new CCodeBinaryExpression (CCodeBinaryOperator.MINUS, cstop, cstart));
set_cvalue (expr, array);
}
}
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