/* Ada language operator definitions for GDB, the GNU debugger. | |
Copyright (C) 1992, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, | |
2007, 2008, 2009, 2010 Free Software Foundation, Inc. | |
This file is part of GDB. | |
This program 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 3 of the License, or | |
(at your option) any later version. | |
This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */ | |
/* X IN A'RANGE(N). N is an immediate operand, surrounded by | |
BINOP_IN_BOUNDS before and after. A is an array, X an index | |
value. Evaluates to true iff X is within range of the Nth | |
dimension (1-based) of A. (A multi-dimensional array | |
type is represented as array of array of ...) */ | |
BINOP_IN_BOUNDS = OP_EXTENDED0, | |
/* X IN L .. U. True iff L <= X <= U. */ | |
TERNOP_IN_RANGE, | |
/* Ada attributes ('Foo). */ | |
OP_ATR_FIRST, | |
OP_ATR_LAST, | |
OP_ATR_LENGTH, | |
OP_ATR_IMAGE, | |
OP_ATR_MAX, | |
OP_ATR_MIN, | |
OP_ATR_MODULUS, | |
OP_ATR_POS, | |
OP_ATR_SIZE, | |
OP_ATR_TAG, | |
OP_ATR_VAL, | |
/* Ada type qualification. It is encoded as for UNOP_CAST, above, | |
and denotes the TYPE'(EXPR) construct. */ | |
UNOP_QUAL, | |
/* X IN TYPE. The `TYPE' argument is immediate, with | |
UNOP_IN_RANGE before and after it. True iff X is a member of | |
type TYPE (typically a subrange). */ | |
UNOP_IN_RANGE, | |
/* An aggregate. A single immediate operand, N>0, gives | |
the number of component specifications that follow. The | |
immediate operand is followed by a second OP_AGGREGATE. | |
Next come N component specifications. A component | |
specification is either an OP_OTHERS (others=>...), an | |
OP_CHOICES (for named associations), or other expression (for | |
positional aggregates only). Aggregates currently | |
occur only as the right sides of assignments. */ | |
OP_AGGREGATE, | |
/* An others clause. Followed by a single expression. */ | |
OP_OTHERS, | |
/* An aggregate component association. A single immediate operand, N, | |
gives the number of choices that follow. This is followed by a second | |
OP_CHOICES operator. Next come N operands, each of which is an | |
expression, an OP_DISCRETE_RANGE, or an OP_NAME---the latter | |
for a simple name that must be a record component name and does | |
not correspond to a single existing symbol. After the N choice | |
indicators comes an expression giving the value. | |
In an aggregate such as (X => E1, ...), where X is a simple | |
name, X could syntactically be either a component_selector_name | |
or an expression used as a discrete_choice, depending on the | |
aggregate's type context. Since this is not known at parsing | |
time, we don't attempt to disambiguate X if it has multiple | |
definitions, but instead supply an OP_NAME. If X has a single | |
definition, we represent it with an OP_VAR_VALUE, even though | |
it may turn out to be within a record aggregate. Aggregate | |
evaluation can use either OP_NAMEs or OP_VAR_VALUEs to get a | |
record field name, and can evaluate OP_VAR_VALUE normally to | |
get its value as an expression. Unfortunately, we lose out in | |
cases where X has multiple meanings and is part of an array | |
aggregate. I hope these are not common enough to annoy users, | |
who can work around the problem in any case by putting | |
parentheses around X. */ | |
OP_CHOICES, | |
/* A positional aggregate component association. The operator is | |
followed by a single integer indicating the position in the | |
aggregate (0-based), followed by a second OP_POSITIONAL. Next | |
follows a single expression giving the component value. */ | |
OP_POSITIONAL, | |
/* A range of values. Followed by two expressions giving the | |
upper and lower bounds of the range. */ | |
OP_DISCRETE_RANGE, | |
/* End marker */ | |
OP_ADA_LAST, |