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
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
|
-- Scanner token definitions.
-- Copyright (C) 2002, 2003, 2004, 2005 Tristan Gingold
--
-- GHDL 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, or (at your option) any later
-- version.
--
-- GHDL 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 GHDL; see the file COPYING. If not, write to the Free
-- Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-- 02111-1307, USA.
package Tokens is
pragma Pure (Tokens);
type Token_Type is
(
Tok_Invalid, -- current_token is not valid.
Tok_Left_Paren, -- (
Tok_Right_Paren, -- )
Tok_Left_Bracket, -- [
Tok_Right_Bracket, -- ]
Tok_Colon, -- :
Tok_Semi_Colon, -- ;
Tok_Comma, -- ,
Tok_Double_Arrow, -- =>
Tok_Tick, -- '
Tok_Double_Star, -- **
Tok_Assign, -- :=
Tok_Bar, -- |
Tok_Box, -- <>
Tok_Dot, -- .
Tok_Equal_Equal, -- == (AMS Vhdl)
Tok_Eof, -- End of file.
Tok_Newline,
Tok_Comment,
Tok_Character,
Tok_Identifier,
Tok_Integer,
Tok_Real,
Tok_String,
-- This token corresponds to a base specifier followed by bit_value.
-- The base specifier is stored in Name_Buffer/Name_Length like an
-- identifier (in lowercase), the String8_Id contains the expanded bit
-- value.
Tok_Bit_String,
-- An integer immediately followed by a letter. This is used by to
-- scan vhdl 2008 (and later) bit string with a length.
Tok_Integer_Letter,
-- relational_operator
Tok_Equal, -- =
Tok_Not_Equal, -- /=
Tok_Less, -- <
Tok_Less_Equal, -- <=
Tok_Greater, -- >
Tok_Greater_Equal, -- >=
Tok_Match_Equal, -- ?=
Tok_Match_Not_Equal, -- ?/=
Tok_Match_Less, -- ?<
Tok_Match_Less_Equal, -- ?<=
Tok_Match_Greater, -- ?>
Tok_Match_Greater_Equal, -- ?>=
-- sign token
Tok_Plus, -- +
Tok_Minus, -- -
-- and adding_operator
Tok_Ampersand, -- &
-- VHDL 2008
Tok_Condition, -- ??
Tok_Double_Less, -- <<
Tok_Double_Greater, -- >>
Tok_Caret, -- ^
-- PSL
Tok_And_And, -- &&
Tok_Bar_Bar, -- ||
Tok_Left_Curly, -- {
Tok_Right_Curly, -- }
Tok_Exclam_Mark, -- !
Tok_Brack_Star, -- [*
Tok_Brack_Plus_Brack, -- [+]
Tok_Brack_Arrow, -- [->
Tok_Brack_Equal, -- [=
Tok_Bar_Arrow, -- |->
Tok_Bar_Double_Arrow, -- |=>
Tok_Minus_Greater, -- ->
Tok_Arobase, -- @
-- multiplying operator
Tok_Star, -- *
Tok_Slash, -- /
Tok_Mod, -- mod
Tok_Rem, -- rem
-- relation token:
Tok_And,
Tok_Or,
Tok_Xor,
Tok_Nand,
Tok_Nor,
-- miscellaneous operator
Tok_Abs,
Tok_Not,
-- Key words
Tok_Access,
Tok_After,
Tok_Alias,
Tok_All,
Tok_Architecture,
Tok_Array,
Tok_Assert,
Tok_Attribute,
Tok_Begin,
Tok_Block,
Tok_Body,
Tok_Buffer,
Tok_Bus,
Tok_Case,
Tok_Component,
Tok_Configuration,
Tok_Constant,
Tok_Disconnect,
Tok_Downto,
Tok_Else,
Tok_Elsif,
Tok_End,
Tok_Entity,
Tok_Exit,
Tok_File,
Tok_For,
Tok_Function,
Tok_Generate,
Tok_Generic,
Tok_Guarded,
Tok_If,
Tok_In,
Tok_Inout,
Tok_Is,
Tok_Label,
Tok_Library,
Tok_Linkage,
Tok_Loop,
Tok_Map,
Tok_New,
Tok_Next,
Tok_Null,
Tok_Of,
Tok_On,
Tok_Open,
Tok_Others,
Tok_Out,
Tok_Package,
Tok_Port,
Tok_Procedure,
Tok_Process,
Tok_Range,
Tok_Record,
Tok_Register,
Tok_Report,
Tok_Return,
Tok_Select,
Tok_Severity,
Tok_Signal,
Tok_Subtype,
Tok_Then,
Tok_To,
Tok_Transport,
Tok_Type,
Tok_Units,
Tok_Until,
Tok_Use,
Tok_Variable,
Tok_Wait,
Tok_When,
Tok_While,
Tok_With,
-- Tokens below this line are key words in vhdl93 but not in vhdl87
Tok_Xnor,
Tok_Group,
Tok_Impure,
Tok_Inertial,
Tok_Literal,
Tok_Postponed,
Tok_Pure,
Tok_Reject,
Tok_Shared,
Tok_Unaffected,
-- shift_operator
Tok_Sll,
Tok_Sla,
Tok_Sra,
Tok_Srl,
Tok_Rol,
Tok_Ror,
-- Added by Vhdl 2000:
Tok_Protected,
-- Added by vhdl 2008:
Tok_Context,
-- AMS reserved words
Tok_Across,
Tok_Break,
Tok_Limit,
Tok_Nature,
Tok_Noise,
Tok_Procedural,
Tok_Quantity,
Tok_Reference,
Tok_Spectrum,
Tok_Subnature,
Tok_Terminal,
Tok_Through,
Tok_Tolerance,
-- PSL words
Tok_Psl_Default,
Tok_Psl_Clock,
Tok_Psl_Property,
Tok_Psl_Sequence,
Tok_Psl_Endpoint,
Tok_Psl_Cover,
Tok_Psl_Const,
Tok_Psl_Boolean,
Tok_Inf,
Tok_Within,
Tok_Abort,
Tok_Before,
Tok_Always,
Tok_Never,
Tok_Eventually,
Tok_Next_A,
Tok_Next_E,
Tok_Next_Event,
Tok_Next_Event_A,
Tok_Next_Event_E
);
-- subtype Token_Relation_Type is Token_Type range Tok_And .. Tok_Xnor;
subtype Token_Relational_Operator_Type is Token_Type range
Tok_Equal .. Tok_Match_Greater_Equal;
subtype Token_Shift_Operator_Type is Token_Type range
Tok_Sll .. Tok_Ror;
subtype Token_Sign_Type is Token_Type range
Tok_Plus .. Tok_Minus;
subtype Token_Adding_Operator_Type is Token_Type range
Tok_Plus .. Tok_Ampersand;
subtype Token_Multiplying_Operator_Type is Token_Type range
Tok_Star .. Tok_Rem;
Tok_First_Keyword : constant Tokens.Token_Type := Tokens.Tok_Mod;
-- Return the name of the token.
function Image (Token: Token_Type) return String;
end Tokens;
|
