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/* valastringliteral.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>
*/
using GLib;
/**
* Represents a string literal in the source code.
*/
public class Vala.StringLiteral : Literal {
/**
* The literal value.
*/
public string value { get; set; }
public bool translate { get; set; }
/**
* Creates a new string literal.
*
* @param value the literal value
* @param source_reference reference to source code
* @return newly created string literal
*/
public StringLiteral (string value, SourceReference? source_reference = null) {
this.value = value;
this.source_reference = source_reference;
}
/**
* Evaluates the literal string value.
*
* @return the unescaped string
*/
public string? eval () {
if (value == null) {
return null;
}
/* remove quotes */
var noquotes = value.substring (1, (uint) (value.length - 2));
/* unescape string */
return noquotes.compress ();
}
public override void accept (CodeVisitor visitor) {
visitor.visit_string_literal (this);
visitor.visit_expression (this);
}
public override bool is_pure () {
return true;
}
public override bool is_non_null () {
return true;
}
public override string to_string () {
return value;
}
public override bool check (CodeContext context) {
if (checked) {
return !error;
}
checked = true;
value_type = context.analyzer.string_type.copy ();
return !error;
}
public override void emit (CodeGenerator codegen) {
codegen.visit_string_literal (this);
codegen.visit_expression (this);
}
public static StringLiteral? get_format_literal (Expression expr) {
unowned StringLiteral? format_literal = expr as StringLiteral;
if (format_literal != null) {
return format_literal;
}
unowned MethodCall? call = expr as MethodCall;
if (call != null) {
return call.get_format_literal ();
}
return null;
}
}
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