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comparison libinterp/parse-tree/pt-decl.h @ 15195:2fc554ffbc28

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split libinterp from src * libinterp: New directory. Move all files from src directory here except Makefile.am, main.cc, main-cli.cc, mkoctfile.in.cc, mkoctfilr.in.sh, octave-config.in.cc, octave-config.in.sh. * libinterp/Makefile.am: New file, extracted from src/Makefile.am. * src/Makefile.am: Delete everything except targets and definitions needed to build and link main and utility programs. * Makefile.am (SUBDIRS): Include libinterp in the list. * autogen.sh: Run config-module.sh in libinterp/dldfcn directory, not src/dldfcn directory. * configure.ac (AC_CONFIG_SRCDIR): Use libinterp/octave.cc, not src/octave.cc. (DL_LDFLAGS, LIBOCTINTERP): Use libinterp, not src. (AC_CONFIG_FILES): Include libinterp/Makefile in the list. * find-docstring-files.sh: Look in libinterp, not src. * gui/src/Makefile.am (liboctgui_la_CPPFLAGS): Find header files in libinterp, not src.
author John W. Eaton <jwe@octave.org>
date Sat, 18 Aug 2012 16:23:39 -0400
parents src/parse-tree/pt-decl.h@46b19589b593
children 3f43e9d6d86e
comparison
equal deleted inserted replaced
15194:0f0b795044c3 15195:2fc554ffbc28
1 /*
2
3 Copyright (C) 1996-2012 John W. Eaton
4
5 This file is part of Octave.
6
7 Octave is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by the
9 Free Software Foundation; either version 3 of the License, or (at your
10 option) any later version.
11
12 Octave is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with Octave; see the file COPYING. If not, see
19 <http://www.gnu.org/licenses/>.
20
21 */
22
23 #if !defined (octave_tree_decl_h)
24 #define octave_tree_decl_h 1
25
26 class tree_expression;
27 class tree_identifier;
28
29 class tree_walker;
30
31 #include <string>
32
33 #include "base-list.h"
34 #include "oct-lvalue.h"
35 #include "pt-cmd.h"
36 #include "pt-id.h"
37 #include "symtab.h"
38
39 // List of expressions that make up a declaration statement.
40
41 class
42 tree_decl_elt
43 {
44 public:
45
46 tree_decl_elt (tree_identifier *i = 0, tree_expression *e = 0)
47 : id (i), expr (e) { }
48
49 ~tree_decl_elt (void);
50
51 bool eval (void);
52
53 bool is_defined (void) { return id ? id->is_defined () : false; }
54
55 bool is_variable (void) { return id ? id->is_variable () : false; }
56
57 void mark_as_formal_parameter (void)
58 {
59 if (id)
60 id->mark_as_formal_parameter ();
61 }
62
63 bool lvalue_ok (void) { return id ? id->lvalue_ok () : false; }
64
65 // Do not allow functions to return null values.
66 octave_value rvalue1 (int nargout = 1)
67 {
68 return id ? id->rvalue1 (nargout).storable_value () : octave_value ();
69 }
70
71 octave_value_list rvalue (int nargout)
72 {
73 octave_value_list retval;
74
75 if (nargout > 1)
76 error ("invalid number of output arguments in declaration list");
77 else
78 retval = rvalue1 (nargout);
79
80 return retval;
81 }
82
83 octave_lvalue lvalue (void) { return id ? id->lvalue () : octave_lvalue (); }
84
85 tree_identifier *ident (void) { return id; }
86
87 tree_expression *expression (void) { return expr; }
88
89 tree_decl_elt *dup (symbol_table::scope_id scope,
90 symbol_table::context_id context) const;
91
92 void accept (tree_walker& tw);
93
94 private:
95
96 // An identifier to tag with the declared property.
97 tree_identifier *id;
98
99 // An initializer expression (may be zero);
100 tree_expression *expr;
101
102 // No copying!
103
104 tree_decl_elt (const tree_decl_elt&);
105
106 tree_decl_elt& operator = (const tree_decl_elt&);
107 };
108
109 class
110 tree_decl_init_list : public octave_base_list<tree_decl_elt *>
111 {
112 public:
113
114 tree_decl_init_list (void) { }
115
116 tree_decl_init_list (tree_decl_elt *t) { append (t); }
117
118 ~tree_decl_init_list (void)
119 {
120 while (! empty ())
121 {
122 iterator p = begin ();
123 delete *p;
124 erase (p);
125 }
126 }
127
128 tree_decl_init_list *dup (symbol_table::scope_id scope,
129 symbol_table::context_id context) const;
130
131 void accept (tree_walker& tw);
132
133 private:
134
135 // No copying!
136
137 tree_decl_init_list (const tree_decl_init_list&);
138
139 tree_decl_init_list& operator = (const tree_decl_init_list&);
140 };
141
142 // Base class for declaration commands -- global, static, etc.
143
144 class
145 tree_decl_command : public tree_command
146 {
147 public:
148
149 tree_decl_command (const std::string& n, int l = -1, int c = -1)
150 : tree_command (l, c), cmd_name (n), init_list (0) { }
151
152 tree_decl_command (const std::string& n, tree_decl_init_list *t,
153 int l = -1, int c = -1)
154 : tree_command (l, c), cmd_name (n), init_list (t) { }
155
156 ~tree_decl_command (void);
157
158 tree_decl_init_list *initializer_list (void) { return init_list; }
159
160 std::string name (void) { return cmd_name; }
161
162 protected:
163
164 // The name of this command -- global, static, etc.
165 std::string cmd_name;
166
167 // The list of variables or initializers in this declaration command.
168 tree_decl_init_list *init_list;
169
170 private:
171
172 // No copying!
173
174 tree_decl_command (const tree_decl_command&);
175
176 tree_decl_command& operator = (const tree_decl_command&);
177 };
178
179 // Global.
180
181 class
182 tree_global_command : public tree_decl_command
183 {
184 public:
185
186 tree_global_command (int l = -1, int c = -1)
187 : tree_decl_command ("global", l, c) { }
188
189 tree_global_command (tree_decl_init_list *t, int l = -1, int c = -1)
190 : tree_decl_command ("global", t, l, c) { }
191
192 ~tree_global_command (void) { }
193
194 tree_command *dup (symbol_table::scope_id scope,
195 symbol_table::context_id context) const;
196
197 void accept (tree_walker& tw);
198
199 private:
200
201 static void do_init (tree_decl_elt& elt);
202
203 // No copying!
204
205 tree_global_command (const tree_global_command&);
206
207 tree_global_command& operator = (const tree_global_command&);
208 };
209
210 // Persistent.
211
212 class
213 tree_persistent_command : public tree_decl_command
214 {
215 public:
216
217 tree_persistent_command (int l = -1, int c = -1)
218 : tree_decl_command ("persistent", l, c) { }
219
220 tree_persistent_command (tree_decl_init_list *t, int l = -1, int c = -1)
221 : tree_decl_command ("persistent", t, l, c) { }
222
223 ~tree_persistent_command (void) { }
224
225 tree_command *dup (symbol_table::scope_id scope,
226 symbol_table::context_id context) const;
227
228 void accept (tree_walker& tw);
229
230 private:
231
232 static void do_init (tree_decl_elt& elt);
233
234 // No copying!
235
236 tree_persistent_command (const tree_persistent_command&);
237
238 tree_persistent_command& operator = (const tree_persistent_command&);
239 };
240
241 #endif