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/* valaenumvalue.vala
*
* Copyright (C) 2006-2009 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 an enum member in the source code.
*/
public class Vala.EnumValue : Symbol {
/**
* Specifies the numerical representation of this enum value.
*/
public Expression value { get; set; }
private string cname;
/**
* Creates a new enum value.
*
* @param name enum value name
* @return newly created enum value
*/
public EnumValue (string name, SourceReference? source_reference = null) {
base (name, source_reference);
}
/**
* Creates a new enum value with the specified numerical representation.
*
* @param name enum value name
* @param value numerical representation
* @return newly created enum value
*/
public EnumValue.with_value (string name, Expression value, SourceReference? source_reference = null) {
this (name, source_reference);
this.value = value;
}
/**
* Returns the string literal of this signal to be used in C code.
* (FIXME: from vlaasignal.vala)
*
* @return string literal to be used in C code
*/
public CCodeConstant get_canonical_cconstant () {
var str = new StringBuilder ("\"");
string i = name;
while (i.len () > 0) {
unichar c = i.get_char ();
if (c == '_') {
str.append_c ('-');
} else {
str.append_unichar (c.tolower ());
}
i = i.next_char ();
}
str.append_c ('"');
return new CCodeConstant (str.str);
}
public override void accept (CodeVisitor visitor) {
visitor.visit_enum_value (this);
}
public override void accept_children (CodeVisitor visitor) {
if (value != null) {
value.accept (visitor);
}
}
/**
* Process all associated attributes.
*/
public void process_attributes () {
foreach (Attribute a in attributes) {
if (a.name == "CCode" && a.has_argument("cname")) {
cname = a.get_string ("cname");
}
}
}
/**
* Returns the name of this enum value as it is used in C code.
*
* @return the name to be used in C code
*/
public string get_cname () {
if (cname == null) {
cname = get_default_cname ();
}
return cname;
}
public string get_default_cname () {
var en = (Enum) parent_symbol;
return "%s%s".printf (en.get_cprefix (), name);
}
/**
* Sets the name of this enum value to be used in C code.
*
* @param cname the name to be used in C code
*/
public void set_cname (string cname) {
this.cname = cname;
}
public override bool check (SemanticAnalyzer analyzer) {
if (checked) {
return !error;
}
checked = true;
process_attributes ();
if (value != null) {
value.check (analyzer);
// ensure to include dependency in header file as well if necessary
if (!parent_symbol.is_internal_symbol ()
&&value is MemberAccess && value.symbol_reference != null) {
analyzer.current_source_file.add_symbol_dependency (value.symbol_reference, SourceFileDependencyType.HEADER_SHALLOW);
}
}
return !error;
}
}
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