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
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
|
/* valaccodegeneratormemberaccess.vala
*
* Copyright (C) 2006-2007 Jürg Billeter, Raffaele Sandrini
*
* 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>
* Raffaele Sandrini <rasa@gmx.ch>
*/
using GLib;
public class Vala.CCodeGenerator {
private void process_cmember (MemberAccess! expr, CCodeExpression pub_inst, Typesymbol base_type) {
if (expr.symbol_reference is Method) {
var m = (Method) expr.symbol_reference;
if (expr.inner is BaseAccess) {
if (m.base_interface_method != null) {
var base_iface = (Interface) m.base_interface_method.parent_symbol;
string parent_iface_var = "%s_%s_parent_iface".printf (current_class.get_lower_case_cname (null), base_iface.get_lower_case_cname (null));
expr.ccodenode = new CCodeMemberAccess.pointer (new CCodeIdentifier (parent_iface_var), m.name);
return;
} else if (m.base_method != null) {
var base_class = (Class) m.base_method.parent_symbol;
var vcast = new CCodeFunctionCall (new CCodeIdentifier ("%s_CLASS".printf (base_class.get_upper_case_cname (null))));
vcast.add_argument (new CCodeIdentifier ("%s_parent_class".printf (current_class.get_lower_case_cname (null))));
expr.ccodenode = new CCodeMemberAccess.pointer (vcast, m.name);
return;
}
}
if (m.base_interface_method != null) {
expr.ccodenode = new CCodeIdentifier (m.base_interface_method.get_cname ());
} else if (m.base_method != null) {
var binding = CCodeMethodBinding.get (m.base_method);
if (!binding.has_wrapper) {
var inst = pub_inst;
if (expr.inner != null && !expr.inner.is_pure ()) {
// instance expression has side-effects
// store in temp. variable
var temp_decl = get_temp_variable_declarator (expr.inner.static_type);
temp_vars.insert (0, temp_decl);
var ctemp = new CCodeIdentifier (temp_decl.name);
inst = new CCodeAssignment (ctemp, pub_inst);
expr.inner.ccodenode = ctemp;
}
var base_class = (Class) m.base_method.parent_symbol;
var vclass = new CCodeFunctionCall (new CCodeIdentifier ("%s_GET_CLASS".printf (base_class.get_upper_case_cname (null))));
vclass.add_argument (inst);
expr.ccodenode = new CCodeMemberAccess.pointer (vclass, m.name);
} else {
expr.ccodenode = new CCodeIdentifier (m.base_method.get_cname ());
}
} else {
expr.ccodenode = new CCodeIdentifier (m.get_cname ());
}
} else if (expr.symbol_reference is ArrayLengthField) {
expr.ccodenode = get_array_length_cexpression (expr.inner, 1);
} else if (expr.symbol_reference is Field) {
var f = (Field) expr.symbol_reference;
if (f.instance) {
var instance_expression_type = new DataType ();
instance_expression_type.data_type = base_type;
var instance_target_type = new DataType ();
instance_target_type.data_type = (Typesymbol) f.parent_symbol;
CCodeExpression typed_inst = get_implicit_cast_expression (pub_inst, instance_expression_type, instance_target_type);
bool is_gtypeinstance = (instance_target_type.data_type.is_subtype_of (gtypeinstance_type));
CCodeExpression inst;
if (is_gtypeinstance && f.access == SymbolAccessibility.PRIVATE) {
inst = new CCodeMemberAccess.pointer (typed_inst, "priv");
} else {
inst = typed_inst;
}
if (instance_target_type.data_type.is_reference_type ()) {
expr.ccodenode = new CCodeMemberAccess.pointer (inst, f.get_cname ());
} else {
expr.ccodenode = new CCodeMemberAccess (inst, f.get_cname ());
}
} else {
expr.ccodenode = new CCodeIdentifier (f.get_cname ());
}
} else if (expr.symbol_reference is Constant) {
var c = (Constant) expr.symbol_reference;
expr.ccodenode = new CCodeIdentifier (c.get_cname ());
} else if (expr.symbol_reference is Property) {
var prop = (Property) expr.symbol_reference;
if (!prop.no_accessor_method) {
var base_property = prop;
if (prop.base_property != null) {
base_property = prop.base_property;
} else if (prop.base_interface_property != null) {
base_property = prop.base_interface_property;
}
var base_property_type = (Typesymbol) base_property.parent_symbol;
var ccall = new CCodeFunctionCall (new CCodeIdentifier ("%s_get_%s".printf (base_property_type.get_lower_case_cname (null), base_property.name)));
var instance_expression_type = new DataType ();
instance_expression_type.data_type = base_type;
var instance_target_type = new DataType ();
instance_target_type.data_type = base_property_type;
CCodeExpression typed_pub_inst = get_implicit_cast_expression (pub_inst, instance_expression_type, instance_target_type);
ccall.add_argument (typed_pub_inst);
expr.ccodenode = ccall;
} else {
var ccall = new CCodeFunctionCall (new CCodeIdentifier ("g_object_get"));
var ccast = new CCodeFunctionCall (new CCodeIdentifier ("G_OBJECT"));
ccast.add_argument (pub_inst);
ccall.add_argument (ccast);
// property name is second argument of g_object_get
ccall.add_argument (prop.get_canonical_cconstant ());
// we need a temporary variable to save the property value
var temp_decl = get_temp_variable_declarator (expr.static_type);
temp_vars.insert (0, temp_decl);
var ctemp = new CCodeIdentifier (temp_decl.name);
ccall.add_argument (new CCodeUnaryExpression (CCodeUnaryOperator.ADDRESS_OF, ctemp));
ccall.add_argument (new CCodeConstant ("NULL"));
var ccomma = new CCodeCommaExpression ();
ccomma.append_expression (ccall);
ccomma.append_expression (ctemp);
expr.ccodenode = ccomma;
}
} else if (expr.symbol_reference is EnumValue) {
var ev = (EnumValue) expr.symbol_reference;
expr.ccodenode = new CCodeConstant (ev.get_cname ());
} else if (expr.symbol_reference is VariableDeclarator) {
var decl = (VariableDeclarator) expr.symbol_reference;
expr.ccodenode = new CCodeIdentifier (get_variable_cname (decl.name));
} else if (expr.symbol_reference is FormalParameter) {
var p = (FormalParameter) expr.symbol_reference;
if (p.name == "this") {
expr.ccodenode = pub_inst;
} else {
if (p.type_reference.is_out || p.type_reference.is_ref) {
expr.ccodenode = new CCodeIdentifier ("(*%s)".printf (p.name));
} else {
expr.ccodenode = new CCodeIdentifier (p.name);
}
}
} else if (expr.symbol_reference is Signal) {
var sig = (Signal) expr.symbol_reference;
var cl = (Typesymbol) sig.parent_symbol;
if (sig.has_emitter) {
var ccall = new CCodeFunctionCall (new CCodeIdentifier ("%s_%s".printf (cl.get_lower_case_cname (null), sig.name)));
var instance_expression_type = new DataType ();
instance_expression_type.data_type = base_type;
var instance_target_type = new DataType ();
instance_target_type.data_type = cl;
CCodeExpression typed_pub_inst = get_implicit_cast_expression (pub_inst, instance_expression_type, instance_target_type);
ccall.add_argument (typed_pub_inst);
expr.ccodenode = ccall;
} else {
var ccall = new CCodeFunctionCall (new CCodeIdentifier ("g_signal_emit_by_name"));
// FIXME: use C cast if debugging disabled
var ccast = new CCodeFunctionCall (new CCodeIdentifier ("G_OBJECT"));
ccast.add_argument (pub_inst);
ccall.add_argument (ccast);
ccall.add_argument (sig.get_canonical_cconstant ());
expr.ccodenode = ccall;
}
}
}
public override void visit_member_access (MemberAccess! expr) {
CCodeExpression pub_inst = null;
Typesymbol base_type = null;
if (expr.inner == null) {
pub_inst = new CCodeIdentifier ("self");
if (current_type_symbol != null) {
/* base type is available if this is a type method */
base_type = (Typesymbol) current_type_symbol;
if (!base_type.is_reference_type ()) {
pub_inst = new CCodeIdentifier ("(*self)");
}
}
} else {
pub_inst = (CCodeExpression) expr.inner.ccodenode;
if (expr.inner.static_type != null) {
base_type = expr.inner.static_type.data_type;
}
}
process_cmember (expr, pub_inst, base_type);
visit_expression (expr);
}
}
|
