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