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/* valaccodefunctiondeclarator.vala
*
* Copyright (C) 2006-2007 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>
*/
using GLib;
/**
* Represents a function pointer declarator in the C code.
*/
public class Vala.CCodeFunctionDeclarator : CCodeDeclarator {
private List<CCodeParameter> parameters = new ArrayList<CCodeParameter> ();
public CCodeFunctionDeclarator (string name) {
this.name = name;
}
/**
* Appends the specified parameter to the list of function parameters.
*
* @param param a formal parameter
*/
public void add_parameter (CCodeParameter param) {
parameters.add (param);
}
public override void write (CCodeWriter writer) {
write_declaration (writer);
}
public override void write_declaration (CCodeWriter writer) {
writer.write_string ("(*");
writer.write_string (name);
writer.write_string (") (");
bool has_args = (CCodeModifiers.PRINTF in modifiers || CCodeModifiers.SCANF in modifiers);
int i = 0;
int format_arg_index = -1;
int args_index = -1;
foreach (CCodeParameter param in parameters) {
if (i > 0) {
writer.write_string (", ");
}
param.write (writer);
if (CCodeModifiers.FORMAT_ARG in param.modifiers) {
format_arg_index = i;
}
if (has_args && param.ellipsis) {
args_index = i;
} else if (has_args && param.type_name == "va_list" && format_arg_index < 0) {
format_arg_index = i - 1;
}
i++;
}
if (i == 0) {
writer.write_string ("void");
}
writer.write_string (")");
if (CCodeModifiers.DEPRECATED in modifiers) {
writer.write_string (GNUC_DEPRECATED);
}
if (CCodeModifiers.PRINTF in modifiers) {
format_arg_index = (format_arg_index >= 0 ? format_arg_index + 1 : args_index);
writer.write_string (GNUC_PRINTF.printf (format_arg_index, args_index + 1));
} else if (CCodeModifiers.SCANF in modifiers) {
format_arg_index = (format_arg_index >= 0 ? format_arg_index + 1 : args_index);
writer.write_string (GNUC_SCANF.printf (format_arg_index, args_index + 1));
} else if (format_arg_index >= 0) {
writer.write_string (GNUC_FORMAT.printf (format_arg_index + 1));
}
}
}
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