public CCodeFunction generate_enum_to_string_function(ValaEnum en)
{
var to_string_name = "%s_to_string".printf(get_ccode_lower_case_name(en, null));
var to_string_func = new CCodeFunction(to_string_name, "const char*");
to_string_func.add_parameter(new CCodeParameter("value", get_ccode_name(en)));
push_function(to_string_func);
ccode.add_declaration("const char *", new CCodeVariableDeclarator("str"));
ccode.open_switch(new CCodeIdentifier("value"));
foreach (EnumValue enum_value in en.get_values())
{
string dbus_value = get_dbus_value(enum_value, enum_value.name);
ccode.add_case(new CCodeIdentifier(get_ccode_name(enum_value)));
ccode.add_assignment(new CCodeIdentifier("str"), new CCodeConstant("\"%s\"".printf(dbus_value)));
ccode.add_break();
}
ccode.close();
ccode.add_return(new CCodeIdentifier("str"));
pop_function();
return(to_string_func);
}
public override void visit_enum(ValaEnum en)
{
current_scope = en.scope;
en.accept_children(this);
current_scope = current_scope.parent_scope;
}
public CCodeFunction generate_enum_to_string_function_declaration(ValaEnum en)
{
var to_string_name = "%s_to_string".printf(get_ccode_lower_case_name(en, null));
var to_string_func = new CCodeFunction(to_string_name, "const char*");
to_string_func.add_parameter(new CCodeParameter("value", get_ccode_name(en)));
return(to_string_func);
}
public CCodeFunction generate_enum_from_string_function_declaration(ValaEnum en)
{
var from_string_name = "%s_from_string".printf(get_ccode_lower_case_name(en, null));
var from_string_func = new CCodeFunction(from_string_name, get_ccode_name(en));
from_string_func.add_parameter(new CCodeParameter("str", "const char*"));
from_string_func.add_parameter(new CCodeParameter("error", "GError**"));
return(from_string_func);
}
public override bool generate_enum_declaration(ValaEnum en, CCodeFile decl_space)
{
if (base.generate_enum_declaration(en, decl_space))
{
if (is_string_marshalled_enum(en))
{
decl_space.add_function_declaration(generate_enum_from_string_function_declaration(en));
decl_space.add_function_declaration(generate_enum_to_string_function_declaration(en));
}
return(true);
}
return(false);
}
public CCodeFunction generate_enum_from_string_function(ValaEnum en)
{
var from_string_name = "%s_from_string".printf(get_ccode_lower_case_name(en, null));
var from_string_func = new CCodeFunction(from_string_name, get_ccode_name(en));
from_string_func.add_parameter(new CCodeParameter("str", "const char*"));
from_string_func.add_parameter(new CCodeParameter("error", "GError**"));
push_function(from_string_func);
ccode.add_declaration(get_ccode_name(en), CCodeVariableDeclarator.zero("value", new CCodeConstant("0")));
bool firstif = true;
foreach (EnumValue enum_value in en.get_values())
{
string dbus_value = get_dbus_value(enum_value, enum_value.name);
var string_comparison = new CCodeFunctionCall(new CCodeIdentifier("strcmp"));
string_comparison.add_argument(new CCodeIdentifier("str"));
string_comparison.add_argument(new CCodeConstant("\"%s\"".printf(dbus_value)));
var cond = new CCodeBinaryExpression(CCodeBinaryOperator.EQUALITY, string_comparison, new CCodeConstant("0"));
if (firstif)
{
ccode.open_if(cond);
firstif = false;
}
else
{
ccode.else_if(cond);
}
ccode.add_assignment(new CCodeIdentifier("value"), new CCodeIdentifier(get_ccode_name(enum_value)));
}
ccode.add_else();
var set_error = new CCodeFunctionCall(new CCodeIdentifier("g_set_error"));
set_error.add_argument(new CCodeIdentifier("error"));
set_error.add_argument(new CCodeIdentifier("G_DBUS_ERROR"));
set_error.add_argument(new CCodeIdentifier("G_DBUS_ERROR_INVALID_ARGS"));
set_error.add_argument(new CCodeConstant("\"Invalid value for enum `%s'\"".printf(get_ccode_name(en))));
ccode.add_expression(set_error);
ccode.close();
ccode.add_return(new CCodeIdentifier("value"));
pop_function();
return(from_string_func);
}
public override void visit_enum(ValaEnum en)
{
base.visit_enum(en);
if (is_string_marshalled_enum(en))
{
// strcmp
cfile.add_include("string.h");
// for G_DBUS_ERROR
cfile.add_include("gio/gio.h");
cfile.add_function(generate_enum_from_string_function(en));
cfile.add_function(generate_enum_to_string_function(en));
}
}
/// <summary>
/// Adds the specified enum to this namespace.
///
/// <param name="en">an enum</param>
/// </summary>
public override void add_enum(ValaEnum en)
{
// namespaces do not support private memebers
if (en.access == SymbolAccessibility.PRIVATE)
{
en.access = SymbolAccessibility.INTERNAL;
}
if (en.owner == null)
{
en.source_reference.file.add_node(en);
}
enums.Add(en);
scope.add(en.name, en);
}
public override void visit_enum(ValaEnum en)
{
en.accept_children(this);
}
public EnumValueType(ValaEnum type_symbol) : base(type_symbol)
{
}
public virtual void add_enum(ValaEnum en)
{
Report.error(en.source_reference, "unexpected declaration");
}
public override void visit_enum(ValaEnum en)
{
check_unused_attr(en);
en.accept_children(this);
}
/// <summary>
/// Creates a new C function to register the specified enum at runtime.
///
/// <param name="en">an enum</param>
/// <returns>newly created enum register function</returns>
/// </summary>
public EnumRegisterFunction(ValaEnum en, CodeContext context)
{
enum_reference = en;
this.context = context;
}
/// <summary>
/// Visit operation called for enums.
///
/// <param name="en">an enum</param>
/// </summary>
public virtual void visit_enum(ValaEnum en)
{
}