1/* Ada language operator definitions for GDB, the GNU debugger.
2
3   Copyright (C) 1992-2013 Free Software Foundation, Inc.
4
5   This file is part of GDB.
6
7   This program is free software; you can redistribute it and/or modify
8   it under the terms of the GNU General Public License as published by
9   the Free Software Foundation; either version 3 of the License, or
10   (at your option) any later version.
11
12   This program is distributed in the hope that it will be useful,
13   but WITHOUT ANY WARRANTY; without even the implied warranty of
14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15   GNU General Public License for more details.
16
17   You should have received a copy of the GNU General Public License
18   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
19
20/* X IN A'RANGE(N).  N is an immediate operand, surrounded by
21   BINOP_IN_BOUNDS before and after.  A is an array, X an index
22   value.  Evaluates to true iff X is within range of the Nth
23   dimension (1-based) of A.  (A multi-dimensional array
24   type is represented as array of array of ...) */
25OP (BINOP_IN_BOUNDS)
26
27/* X IN L .. U.  True iff L <= X <= U.  */
28OP (TERNOP_IN_RANGE)
29
30/* Ada attributes ('Foo). */
31OP (OP_ATR_FIRST)
32OP (OP_ATR_LAST)
33OP (OP_ATR_LENGTH)
34OP (OP_ATR_IMAGE)
35OP (OP_ATR_MAX)
36OP (OP_ATR_MIN)
37OP (OP_ATR_MODULUS)
38OP (OP_ATR_POS)
39OP (OP_ATR_SIZE)
40OP (OP_ATR_TAG)
41OP (OP_ATR_VAL)
42
43/* Ada type qualification.  It is encoded as for UNOP_CAST, above,
44   and denotes the TYPE'(EXPR) construct. */
45OP (UNOP_QUAL)
46
47/* X IN TYPE.  The `TYPE' argument is immediate, with
48   UNOP_IN_RANGE before and after it. True iff X is a member of
49   type TYPE (typically a subrange). */
50OP (UNOP_IN_RANGE)
51
52/* An aggregate.   A single immediate operand, N>0, gives
53   the number of component specifications that follow.  The
54   immediate operand is followed by a second OP_AGGREGATE.
55   Next come N component specifications.  A component
56   specification is either an OP_OTHERS (others=>...), an
57   OP_CHOICES (for named associations), or other expression (for
58   positional aggregates only).  Aggregates currently
59   occur only as the right sides of assignments. */
60OP (OP_AGGREGATE)
61
62/* An others clause.  Followed by a single expression. */
63OP (OP_OTHERS)
64
65/* An aggregate component association.  A single immediate operand, N,
66   gives the number of choices that follow.  This is followed by a second
67   OP_CHOICES operator.  Next come N operands, each of which is an
68   expression, an OP_DISCRETE_RANGE, or an OP_NAME---the latter
69   for a simple name that must be a record component name and does
70   not correspond to a single existing symbol.  After the N choice
71   indicators comes an expression giving the value.
72
73   In an aggregate such as (X => E1, ...), where X is a simple
74   name, X could syntactically be either a component_selector_name
75   or an expression used as a discrete_choice, depending on the
76   aggregate's type context.  Since this is not known at parsing
77   time, we don't attempt to disambiguate X if it has multiple
78   definitions, but instead supply an OP_NAME.  If X has a single
79   definition, we represent it with an OP_VAR_VALUE, even though
80   it may turn out to be within a record aggregate.  Aggregate
81   evaluation can use either OP_NAMEs or OP_VAR_VALUEs to get a
82   record field name, and can evaluate OP_VAR_VALUE normally to
83   get its value as an expression.  Unfortunately, we lose out in
84   cases where X has multiple meanings and is part of an array
85   aggregate.  I hope these are not common enough to annoy users,
86   who can work around the problem in any case by putting
87   parentheses around X. */
88OP (OP_CHOICES)
89
90/* A positional aggregate component association.  The operator is
91   followed by a single integer indicating the position in the
92   aggregate (0-based), followed by a second OP_POSITIONAL.  Next
93   follows a single expression giving the component value.  */
94OP (OP_POSITIONAL)
95
96/* A range of values.  Followed by two expressions giving the
97   upper and lower bounds of the range. */
98OP (OP_DISCRETE_RANGE)
99