source: src/ResolvExpr/Cost.h@ b1bead1

ADT aaron-thesis arm-eh ast-experimental cleanup-dtors deferred_resn demangler enum forall-pointer-decay jacob/cs343-translation jenkins-sandbox new-ast new-ast-unique-expr new-env no_list persistent-indexer pthread-emulation qualifiedEnum resolv-new with_gc
Last change on this file since b1bead1 was 17f22e78, checked in by Rob Schluntz <rschlunt@…>, 8 years ago

Update Cost operations to perform infinity checks internally
  • Property mode set to 100644
File size: 4.2 KB
Line 
1//
2// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
7// Cost.h --
8//
9// Author : Richard C. Bilson
10// Created On : Sun May 17 09:39:50 2015
11// Last Modified By : Rob Schluntz
12// Last Modified On : Wed Jul 22 16:43:10 2015
13// Update Count : 4
14//
15
16#ifndef COST_H
17#define COST_H
18
19#include <iostream>
20
21namespace ResolvExpr {
22 class Cost {
23 private:
24 Cost( int unsafeCost, int polyCost, int safeCost, int referenceCost );
25
26 public:
27 Cost & incUnsafe( int inc = 1 );
28 Cost & incPoly( int inc = 1 );
29 Cost & incSafe( int inc = 1 );
30 Cost & incReference( int inc = 1 );
31
32 Cost operator+( const Cost &other ) const;
33 Cost operator-( const Cost &other ) const;
34 Cost &operator+=( const Cost &other );
35 bool operator<( const Cost &other ) const;
36 bool operator==( const Cost &other ) const;
37 bool operator!=( const Cost &other ) const;
38 friend std::ostream &operator<<( std::ostream &os, const Cost &cost );
39
40 static const Cost zero;
41 static const Cost infinity;
42
43 static const Cost unsafe;
44 static const Cost poly;
45 static const Cost safe;
46 static const Cost reference;
47 private:
48 int compare( const Cost &other ) const;
49
50 int unsafeCost;
51 int polyCost;
52 int safeCost;
53 int referenceCost;
54 };
55
56 inline Cost::Cost( int unsafeCost, int polyCost, int safeCost, int referenceCost ) : unsafeCost( unsafeCost ), polyCost( polyCost ), safeCost( safeCost ), referenceCost( referenceCost ) {}
57
58 inline Cost & Cost::incUnsafe( int inc ) {
59 if ( *this == infinity ) return *this;
60 unsafeCost += inc;
61 return *this;
62 }
63
64 inline Cost & Cost::incPoly( int inc ) {
65 if ( *this == infinity ) return *this;
66 polyCost += inc;
67 return *this;
68 }
69
70 inline Cost & Cost::incSafe( int inc ) {
71 if ( *this == infinity ) return *this;
72 safeCost += inc;
73 return *this;
74 }
75
76 inline Cost & Cost::incReference( int inc ) {
77 if ( *this == infinity ) return *this;
78 referenceCost += inc;
79 return *this;
80 }
81
82 inline Cost Cost::operator+( const Cost &other ) const {
83 if ( *this == infinity || other == infinity ) return infinity;
84 return Cost( unsafeCost + other.unsafeCost, polyCost + other.polyCost, safeCost + other.safeCost, referenceCost + other.referenceCost );
85 }
86
87 inline Cost Cost::operator-( const Cost &other ) const {
88 if ( *this == infinity || other == infinity ) return infinity;
89 return Cost( unsafeCost - other.unsafeCost, polyCost - other.polyCost, safeCost - other.safeCost, referenceCost - other.referenceCost );
90 }
91
92 inline Cost &Cost::operator+=( const Cost &other ) {
93 if ( *this == infinity ) return *this;
94 if ( other == infinity ) {
95 *this = infinity;
96 return *this;
97 }
98 unsafeCost += other.unsafeCost;
99 polyCost += other.polyCost;
100 safeCost += other.safeCost;
101 referenceCost += other.referenceCost;
102 return *this;
103 }
104
105 inline bool Cost::operator<( const Cost &other ) const {
106 if ( *this == infinity ) return false;
107 if ( other == infinity ) return true;
108
109 if ( unsafeCost > other.unsafeCost ) {
110 return false;
111 } else if ( unsafeCost < other.unsafeCost ) {
112 return true;
113 } else if ( polyCost > other.polyCost ) {
114 return false;
115 } else if ( polyCost < other.polyCost ) {
116 return true;
117 } else if ( safeCost > other.safeCost ) {
118 return false;
119 } else if ( safeCost < other.safeCost ) {
120 return true;
121 } else if ( referenceCost > other.referenceCost ) {
122 return false;
123 } else if ( referenceCost < other.referenceCost ) {
124 return true;
125 } else {
126 return false;
127 } // if
128 }
129
130 inline bool Cost::operator==( const Cost &other ) const {
131 return unsafeCost == other.unsafeCost
132 && polyCost == other.polyCost
133 && safeCost == other.safeCost
134 && referenceCost == other.referenceCost;
135 }
136
137 inline bool Cost::operator!=( const Cost &other ) const {
138 return !( *this == other );
139 }
140
141 inline std::ostream &operator<<( std::ostream &os, const Cost &cost ) {
142 os << "( " << cost.unsafeCost << ", " << cost.polyCost << ", " << cost.safeCost << ", " << cost.referenceCost << " )";
143 return os;
144 }
145} // namespace ResolvExpr
146
147#endif // COST_H
148
149// Local Variables: //
150// tab-width: 4 //
151// mode: c++ //
152// compile-command: "make install" //
153// End: //
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