summaryrefslogtreecommitdiff
path: root/i/marvin/src/interpreter/interpreter.cc
blob: 0c067cfefcd98a9e5c616bcdda962530f1914ef6 (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
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
// interpreter.cc
// marvin - programme du robot 2006. {{{
//
// Copyright (C) 2006 Nicolas Schodet
//
// Robot APB Team/Efrei 2006.
//        Web: http://assos.efrei.fr/robot/
//      Email: robot AT efrei DOT fr
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
// 
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
// }}}
#include "interpreter.hh"
#include "interpreter_parser.hh"

/// Destructor.
Interpreter::~Interpreter (void)
{
    for (Funcs::iterator i = funcs_.begin (); i != funcs_.end (); ++i)
      {
	delete i->second.func;
      }
}

/// Add a function, Interpreter owns f.
void
Interpreter::add (const std::string &s, Func *f, const std::string &desc)
{
    if (!funcs_.insert (Funcs::value_type (s, FuncDesc (f, desc))).second)
      {
	// Interpreter owns f, therefore, f must be deleted.
	delete f;
	throw std::runtime_error ("function \'" + s
				  + "\' inserted two times");
      }
}

/// Add a function without description, Interpreter owns f.
void
Interpreter::add (const std::string &s, Func *f)
{
    add (s, f, "");
}

/// Call a function by name.
void
Interpreter::call (const std::string &s, const Args &a,
		   bool dryrun/*false*/) const
{
    Funcs::const_iterator i;
    i = funcs_.find (s);
    if (i == funcs_.end ())
	throw std::runtime_error ("function \'" + s + "\' does not exist");
    try
      {
	(*i->second.func) (a, dryrun);
      }
    catch (const std::exception &e)
      {
	throw std::runtime_error ("while calling \'" + s + "\', "
				  + e.what ());
      }
}

/// Interpret a string.
void
Interpreter::interpretString (const std::string &s, bool dryrun/*false*/)
{
    InterpreterParser p (*this, dryrun);
    p.parseString (s);
}

/// Interpret a file.
void
Interpreter::interpretFile (const std::string &file, bool dryrun/*false*/)
{
    InterpreterParser p (*this, dryrun);
    p.parseFile (file);
}

/// Return an help string.
std::string
Interpreter::help (void) const
{
    std::string ret;
    for (Funcs::const_iterator i = funcs_.begin (); i != funcs_.end (); ++i)
      {
	// Well, if you really want to implement this better, please do...
	for (std::string::const_iterator j = i->second.desc.begin ();
	     j != i->second.desc.end (); j++)
	  {
	    if (*j == '\n')
		ret += "\n    ";
	    else
		ret += *j;
	  }
	ret += '\n';
      }
    return ret;
}