File : exp_ch4.ads
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT COMPILER COMPONENTS --
4 -- --
5 -- E X P _ C H 4 --
6 -- --
7 -- S p e c --
8 -- --
9 -- Copyright (C) 1992-2014, Free Software Foundation, Inc. --
10 -- --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 3, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING3. If not, go to --
19 -- http://www.gnu.org/licenses for a complete copy of the license. --
20 -- --
21 -- GNAT was originally developed by the GNAT team at New York University. --
22 -- Extensive contributions were provided by Ada Core Technologies Inc. --
23 -- --
24 ------------------------------------------------------------------------------
25
26 -- Expand routines for chapter 4 constructs
27
28 with Types; use Types;
29
30 package Exp_Ch4 is
31
32 procedure Expand_N_Allocator (N : Node_Id);
33 procedure Expand_N_And_Then (N : Node_Id);
34 procedure Expand_N_Case_Expression (N : Node_Id);
35 procedure Expand_N_Explicit_Dereference (N : Node_Id);
36 procedure Expand_N_Expression_With_Actions (N : Node_Id);
37 procedure Expand_N_If_Expression (N : Node_Id);
38 procedure Expand_N_In (N : Node_Id);
39 procedure Expand_N_Indexed_Component (N : Node_Id);
40 procedure Expand_N_Not_In (N : Node_Id);
41 procedure Expand_N_Null (N : Node_Id);
42 procedure Expand_N_Op_Abs (N : Node_Id);
43 procedure Expand_N_Op_Add (N : Node_Id);
44 procedure Expand_N_Op_And (N : Node_Id);
45 procedure Expand_N_Op_Concat (N : Node_Id);
46 procedure Expand_N_Op_Divide (N : Node_Id);
47 procedure Expand_N_Op_Expon (N : Node_Id);
48 procedure Expand_N_Op_Eq (N : Node_Id);
49 procedure Expand_N_Op_Ge (N : Node_Id);
50 procedure Expand_N_Op_Gt (N : Node_Id);
51 procedure Expand_N_Op_Le (N : Node_Id);
52 procedure Expand_N_Op_Lt (N : Node_Id);
53 procedure Expand_N_Op_Minus (N : Node_Id);
54 procedure Expand_N_Op_Mod (N : Node_Id);
55 procedure Expand_N_Op_Multiply (N : Node_Id);
56 procedure Expand_N_Op_Ne (N : Node_Id);
57 procedure Expand_N_Op_Not (N : Node_Id);
58 procedure Expand_N_Op_Or (N : Node_Id);
59 procedure Expand_N_Op_Plus (N : Node_Id);
60 procedure Expand_N_Op_Rem (N : Node_Id);
61 procedure Expand_N_Op_Rotate_Left (N : Node_Id);
62 procedure Expand_N_Op_Rotate_Right (N : Node_Id);
63 procedure Expand_N_Op_Shift_Left (N : Node_Id);
64 procedure Expand_N_Op_Shift_Right (N : Node_Id);
65 procedure Expand_N_Op_Shift_Right_Arithmetic (N : Node_Id);
66 procedure Expand_N_Op_Subtract (N : Node_Id);
67 procedure Expand_N_Op_Xor (N : Node_Id);
68 procedure Expand_N_Or_Else (N : Node_Id);
69 procedure Expand_N_Qualified_Expression (N : Node_Id);
70 procedure Expand_N_Quantified_Expression (N : Node_Id);
71 procedure Expand_N_Selected_Component (N : Node_Id);
72 procedure Expand_N_Slice (N : Node_Id);
73 procedure Expand_N_Type_Conversion (N : Node_Id);
74 procedure Expand_N_Unchecked_Expression (N : Node_Id);
75 procedure Expand_N_Unchecked_Type_Conversion (N : Node_Id);
76
77 function Expand_Record_Equality
78 (Nod : Node_Id;
79 Typ : Entity_Id;
80 Lhs : Node_Id;
81 Rhs : Node_Id;
82 Bodies : List_Id)
83 return Node_Id;
84 -- Expand a record equality into an expression that compares the fields
85 -- individually to yield the required Boolean result. Loc is the
86 -- location for the generated nodes. Typ is the type of the record, and
87 -- Lhs, Rhs are the record expressions to be compared, these
88 -- expressions need not to be analyzed but have to be side-effect free.
89 -- Bodies is a list on which to attach bodies of local functions that
90 -- are created in the process. This is the responsibility of the caller
91 -- to insert those bodies at the right place. Nod provides the Sloc
92 -- value for generated code.
93
94 procedure Expand_Set_Membership (N : Node_Id);
95 -- For each choice of a set membership, we create a simple equality or
96 -- membership test. The whole membership is rewritten connecting these
97 -- with OR ELSE.
98
99 function Integer_Promotion_Possible (N : Node_Id) return Boolean;
100 -- Returns true if the node is a type conversion whose operand is an
101 -- arithmetic operation on signed integers, and the base type of the
102 -- signed integer type is smaller than Standard.Integer. In such case we
103 -- have special circuitry in Expand_N_Type_Conversion to promote both of
104 -- the operands to type Integer.
105
106 end Exp_Ch4;