/[eiffelstudio]/branches/eth/eve/Src/Eiffel/API/evaluated_type/none_a.e
ViewVC logotype

Annotation of /branches/eth/eve/Src/Eiffel/API/evaluated_type/none_a.e

Parent Directory Parent Directory | Revision Log Revision Log


Revision 92434 - (hide annotations)
Fri Apr 12 10:41:30 2013 UTC (6 years, 9 months ago) by jasonw
File size: 4550 byte(s)
<<Merged from trunk#92433.>>
1 manus 76432 note
2 manus 27398 description: "Actual type for NONE."
3 manus 56535 legal: "See notice at end of class."
4     status: "See notice at end of class."
5 manus 9656 date: "$Date$"
6 manus 27398 revision: "$Revision$"
7 dinov 3375
8 manus 9656 class
9     NONE_A
10 grator 18
11     inherit
12 jasonw 89347 DEANCHORED_TYPE_A
13 grator 18 redefine
14 manus 72419 is_none, dump, c_type, same_as, is_full_named_type, generated_id,
15 manus 74866 generate_gen_type_il
16 grator 18 end
17    
18 manus 57234 feature -- Visitor
19    
20 manus 76432 process (v: TYPE_A_VISITOR)
21 manus 57234 -- Process current element.
22     do
23     v.process_none_a (Current)
24     end
25    
26 manus 9656 feature -- Comparison
27    
28 manus 76432 is_equivalent (other: like Current): BOOLEAN
29 manus 9656 -- Is `other' equivalent to the current object ?
30     do
31     Result := True
32     end
33    
34 dinov 3078 feature -- Properties
35 grator 18
36 manus 76432 is_none: BOOLEAN = True
37 grator 18 -- Is the current type a none type ?
38    
39 manus 76432 is_full_named_type: BOOLEAN = True
40 manus 44539 -- Current is a full named type.
41    
42 dinov 3180 feature -- Access
43    
44 manus 76432 hash_code: INTEGER
45 manus 72419 -- Hash code for current type
46     do
47     Result := {SHARED_HASH_CODE}.none_code
48     end
49    
50 manus 76432 same_as (other: TYPE_A): BOOLEAN
51 dinov 3180 -- Is the current type the same as `other' ?
52     do
53 jasonw 83524 if other.is_valid then
54     Result := other.is_none
55     end
56 manus 9656 end
57 dinov 3180
58 jasonw 89347 base_class: CLASS_C
59 manus 11302 do
60     -- No associated class
61     end
62    
63 dinov 3078 feature -- Output
64    
65 manus 76432 dump: STRING = "NONE"
66 grator 18 -- Dumped trace
67    
68 manus 76432 ext_append_to (st: TEXT_FORMATTER; c: CLASS_C)
69 grator 296 do
70 jasonw 87220 if
71     not has_attached_mark and then not has_detachable_mark and then
72     not is_attached and then not is_implicitly_attached
73     then
74     -- There is no explicit attachment mark, let's put an assumed one.
75     st.process_symbol_text ({SHARED_TEXT_ITEMS}.ti_l_bracket)
76     st.process_keyword_text ({SHARED_TEXT_ITEMS}.ti_detachable_keyword, Void)
77     st.process_symbol_text ({SHARED_TEXT_ITEMS}.ti_r_bracket)
78     st.add_space
79     end
80     ext_append_marks (st)
81 manus 72419 st.add ({SHARED_TEXT_ITEMS}.ti_none_class)
82 manus 9656 end
83 grator 296
84 manus 72419 feature -- Generic conformance
85    
86 manus 76432 generated_id (final_mode: BOOLEAN; a_context_type: TYPE_A): NATURAL_16
87 manus 72419 -- Id of a `like xxx'.
88     do
89 jasonw 88881 Result := {SHARED_GEN_CONF_LEVEL}.detachable_none_type
90 manus 72419 end
91    
92     feature -- IL code generation
93    
94 manus 76432 generate_gen_type_il (il_generator: IL_CODE_GENERATOR; use_info: BOOLEAN)
95 manus 72419 -- `use_info' is true iff we generate code for a
96     -- creation instruction.
97     do
98     il_generator.generate_none_type_instance
99     end
100    
101 dinov 3180 feature {COMPILER_EXPORTER}
102 dinov 3078
103 manus 76432 create_info: CREATE_TYPE
104 manus 9656 -- Byte code information for entity type creation
105     do
106 manus 75567 create Result.make (as_attachment_mark_free)
107 manus 9656 end
108    
109 manus 76432 c_type: REFERENCE_I
110 grator 18 -- Void C type
111 manus 72419 do
112     Result := reference_c_type
113 manus 9656 end
114 grator 18
115 jasonw 92434 conform_to (a_context_class: CLASS_C; other: INHERITANCE_TYPE_A): BOOLEAN
116 manus 41740 -- Does Current conform to `other'?
117 grator 18 do
118 jasonw 87220 -- Apply the same conformance rules as for a class type.
119     if
120 jasonw 89347 attached {ANNOTATED_TYPE_A} other.conformance_type as other_attachable_type and then
121 jasonw 87220 not other_attachable_type.is_expanded and then
122     (other_attachable_type.is_formal implies other_attachable_type.is_reference)
123     then
124     Result := True
125     if a_context_class.lace_class.is_void_safe_conformance then
126     Result :=
127     is_attachable_to (other_attachable_type) and then
128     (other_attachable_type.is_formal implies
129     (other_attachable_type.has_detachable_mark or else is_implicitly_attached))
130     end
131     if Result then
132     Result := is_processor_attachable_to (other)
133     end
134     end
135 manus 9656 end
136 grator 18
137 manus 76432 note
138 jasonw 92434 copyright: "Copyright (c) 1984-2013, Eiffel Software"
139 manus 58027 license: "GPL version 2 (see http://www.eiffel.com/licensing/gpl.txt)"
140 manus 56535 licensing_options: "http://www.eiffel.com/licensing"
141     copying: "[
142     This file is part of Eiffel Software's Eiffel Development Environment.
143 manus 58027
144 manus 56535 Eiffel Software's Eiffel Development Environment is free
145     software; you can redistribute it and/or modify it under
146     the terms of the GNU General Public License as published
147     by the Free Software Foundation, version 2 of the License
148     (available at the URL listed under "license" above).
149 manus 58027
150 manus 56535 Eiffel Software's Eiffel Development Environment is
151 jasonw 83524 distributed in the hope that it will be useful, but
152 manus 56535 WITHOUT ANY WARRANTY; without even the implied warranty
153     of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
154 jasonw 83524 See the GNU General Public License for more details.
155 manus 58027
156 manus 56535 You should have received a copy of the GNU General Public
157     License along with Eiffel Software's Eiffel Development
158     Environment; if not, write to the Free Software Foundation,
159 jasonw 83524 Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
160 manus 56535 ]"
161     source: "[
162 jasonw 83524 Eiffel Software
163     5949 Hollister Ave., Goleta, CA 93117 USA
164     Telephone 805-685-1006, Fax 805-685-6869
165     Website http://www.eiffel.com
166     Customer support http://support.eiffel.com
167 manus 56535 ]"
168    
169 dinov 3375 end -- class NONE_A

Properties

Name Value
svn:eol-style native
svn:keywords Author Date Id Revision

  ViewVC Help
Powered by ViewVC 1.1.23