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