1/* Ada language operator definitions for GDB, the GNU debugger.
2
3   Copyright (C) 1992, 1997-2005, 2007-2012 Free Software Foundation,
4   Inc.
5
6   This file is part of GDB.
7
8   This program is free software; you can redistribute it and/or modify
9   it under the terms of the GNU General Public License as published by
10   the Free Software Foundation; either version 3 of the License, or
11   (at your option) any later version.
12
13   This program is distributed in the hope that it will be useful,
14   but WITHOUT ANY WARRANTY; without even the implied warranty of
15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16   GNU General Public License for more details.
17
18   You should have received a copy of the GNU General Public License
19   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
20
21/* X IN A'RANGE(N).  N is an immediate operand, surrounded by
22   BINOP_IN_BOUNDS before and after.  A is an array, X an index
23   value.  Evaluates to true iff X is within range of the Nth
24   dimension (1-based) of A.  (A multi-dimensional array
25   type is represented as array of array of ...) */
26OP (BINOP_IN_BOUNDS)
27
28/* X IN L .. U.  True iff L <= X <= U.  */
29OP (TERNOP_IN_RANGE)
30
31/* Ada attributes ('Foo). */
32OP (OP_ATR_FIRST)
33OP (OP_ATR_LAST)
34OP (OP_ATR_LENGTH)
35OP (OP_ATR_IMAGE)
36OP (OP_ATR_MAX)
37OP (OP_ATR_MIN)
38OP (OP_ATR_MODULUS)
39OP (OP_ATR_POS)
40OP (OP_ATR_SIZE)
41OP (OP_ATR_TAG)
42OP (OP_ATR_VAL)
43
44/* Ada type qualification.  It is encoded as for UNOP_CAST, above,
45   and denotes the TYPE'(EXPR) construct. */
46OP (UNOP_QUAL)
47
48/* X IN TYPE.  The `TYPE' argument is immediate, with
49   UNOP_IN_RANGE before and after it. True iff X is a member of
50   type TYPE (typically a subrange). */
51OP (UNOP_IN_RANGE)
52
53/* An aggregate.   A single immediate operand, N>0, gives
54   the number of component specifications that follow.  The
55   immediate operand is followed by a second OP_AGGREGATE.
56   Next come N component specifications.  A component
57   specification is either an OP_OTHERS (others=>...), an
58   OP_CHOICES (for named associations), or other expression (for
59   positional aggregates only).  Aggregates currently
60   occur only as the right sides of assignments. */
61OP (OP_AGGREGATE)
62
63/* An others clause.  Followed by a single expression. */
64OP (OP_OTHERS)
65
66/* An aggregate component association.  A single immediate operand, N,
67   gives the number of choices that follow.  This is followed by a second
68   OP_CHOICES operator.  Next come N operands, each of which is an
69   expression, an OP_DISCRETE_RANGE, or an OP_NAME---the latter
70   for a simple name that must be a record component name and does
71   not correspond to a single existing symbol.  After the N choice
72   indicators comes an expression giving the value.
73
74   In an aggregate such as (X => E1, ...), where X is a simple
75   name, X could syntactically be either a component_selector_name
76   or an expression used as a discrete_choice, depending on the
77   aggregate's type context.  Since this is not known at parsing
78   time, we don't attempt to disambiguate X if it has multiple
79   definitions, but instead supply an OP_NAME.  If X has a single
80   definition, we represent it with an OP_VAR_VALUE, even though
81   it may turn out to be within a record aggregate.  Aggregate
82   evaluation can use either OP_NAMEs or OP_VAR_VALUEs to get a
83   record field name, and can evaluate OP_VAR_VALUE normally to
84   get its value as an expression.  Unfortunately, we lose out in
85   cases where X has multiple meanings and is part of an array
86   aggregate.  I hope these are not common enough to annoy users,
87   who can work around the problem in any case by putting
88   parentheses around X. */
89OP (OP_CHOICES)
90
91/* A positional aggregate component association.  The operator is
92   followed by a single integer indicating the position in the
93   aggregate (0-based), followed by a second OP_POSITIONAL.  Next
94   follows a single expression giving the component value.  */
95OP (OP_POSITIONAL)
96
97/* A range of values.  Followed by two expressions giving the
98   upper and lower bounds of the range. */
99OP (OP_DISCRETE_RANGE)
100