| /* Ada language operator definitions for GDB, the GNU debugger. |
| |
| Copyright (C) 1992-2018 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 ...) */ |
| OP (BINOP_IN_BOUNDS) |
| |
| /* X IN L .. U. True iff L <= X <= U. */ |
| OP (TERNOP_IN_RANGE) |
| |
| /* Ada attributes ('Foo). */ |
| OP (OP_ATR_FIRST) |
| OP (OP_ATR_LAST) |
| OP (OP_ATR_LENGTH) |
| OP (OP_ATR_IMAGE) |
| OP (OP_ATR_MAX) |
| OP (OP_ATR_MIN) |
| OP (OP_ATR_MODULUS) |
| OP (OP_ATR_POS) |
| OP (OP_ATR_SIZE) |
| OP (OP_ATR_TAG) |
| OP (OP_ATR_VAL) |
| |
| /* Ada type qualification. It is encoded as for UNOP_CAST, above, |
| and denotes the TYPE'(EXPR) construct. */ |
| OP (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). */ |
| OP (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 (OP_AGGREGATE) |
| |
| /* An others clause. Followed by a single expression. */ |
| OP (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 (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 (OP_POSITIONAL) |
| |
| /* A range of values. Followed by two expressions giving the |
| upper and lower bounds of the range. */ |
| OP (OP_DISCRETE_RANGE) |