blob: 90789a25ff0f5c10b4350678df793f0d041fa542 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
*
* Original file from libgimpwidgets: gimpeevl.h
* Copyright (C) 2008-2009 Fredrik Alstromer <roe@excu.se>
* Copyright (C) 2008-2009 Martin Nordholts <martinn@svn.gnome.org>
* Modified for Inkscape by Johan Engelen
* Copyright (C) 2011 Johan Engelen
*
* 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 3 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, see
* <http://www.gnu.org/licenses/>.
*/
#ifndef __GIMP_EEVL_H__
#define __GIMP_EEVL_H__
#include "util/units.h"
#include <exception>
#include <sstream>
#include <string>
namespace Inkscape {
namespace Util {
class Unit;
/**
* GimpEevlQuantity:
* @value: In reference units.
* @dimension: in has a dimension of 1, in^2 has a dimension of 2 etc
*/
typedef struct
{
double value;
gint dimension;
} GimpEevlQuantity;
typedef bool (* GimpEevlUnitResolverProc) (const gchar *identifier,
GimpEevlQuantity *result,
Unit* unit);
GimpEevlQuantity gimp_eevl_evaluate (const gchar* string, Unit* unit = NULL);
/**
* Special exception class for the expression evaluator.
*/
class EvaluatorException : public std::exception {
public:
EvaluatorException(const char * message, const char *at_position) {
std::ostringstream os;
const char* token = at_position ? at_position : "<End of input>";
os << "Expression evaluator error: " << message << " at '" << token << "'";
msgstr = os.str();
}
virtual ~EvaluatorException() throw() {} // necessary to destroy the string object!!!
virtual const char* what() const throw () {
return msgstr.c_str();
}
protected:
std::string msgstr;
};
}
}
#endif /* __GIMP_EEVL_H__ */
|
