1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
/* Copyright (c) 2012-2017 The ANTLR Project. All rights reserved.
* Use of this file is governed by the BSD 3-clause license that
* can be found in the LICENSE.txt file in the project root.
*/
#include "misc/MurmurHash.h"
#include "atn/PredictionContext.h"
#include "SemanticContext.h"
#include "atn/ATNConfig.h"
using namespace antlr4::atn;
ATNConfig::ATNConfig(ATNState *state_, size_t alt_, Ref<PredictionContext> const& context_)
: ATNConfig(state_, alt_, context_, SemanticContext::NONE) {
}
ATNConfig::ATNConfig(ATNState *state_, size_t alt_, Ref<PredictionContext> const& context_, Ref<SemanticContext> const& semanticContext_)
: state(state_), alt(alt_), context(context_), semanticContext(semanticContext_) {
reachesIntoOuterContext = 0;
}
ATNConfig::ATNConfig(Ref<ATNConfig> const& c) : ATNConfig(c, c->state, c->context, c->semanticContext) {
}
ATNConfig::ATNConfig(Ref<ATNConfig> const& c, ATNState *state_) : ATNConfig(c, state_, c->context, c->semanticContext) {
}
ATNConfig::ATNConfig(Ref<ATNConfig> const& c, ATNState *state, Ref<SemanticContext> const& semanticContext)
: ATNConfig(c, state, c->context, semanticContext) {
}
ATNConfig::ATNConfig(Ref<ATNConfig> const& c, Ref<SemanticContext> const& semanticContext)
: ATNConfig(c, c->state, c->context, semanticContext) {
}
ATNConfig::ATNConfig(Ref<ATNConfig> const& c, ATNState *state, Ref<PredictionContext> const& context)
: ATNConfig(c, state, context, c->semanticContext) {
}
ATNConfig::ATNConfig(Ref<ATNConfig> const& c, ATNState *state, Ref<PredictionContext> const& context,
Ref<SemanticContext> const& semanticContext)
: state(state), alt(c->alt), context(context), reachesIntoOuterContext(c->reachesIntoOuterContext),
semanticContext(semanticContext) {
}
ATNConfig::~ATNConfig() {
}
size_t ATNConfig::hashCode() const {
size_t hashCode = misc::MurmurHash::initialize(7);
hashCode = misc::MurmurHash::update(hashCode, state->stateNumber);
hashCode = misc::MurmurHash::update(hashCode, alt);
hashCode = misc::MurmurHash::update(hashCode, context);
hashCode = misc::MurmurHash::update(hashCode, semanticContext);
hashCode = misc::MurmurHash::finish(hashCode, 4);
return hashCode;
}
size_t ATNConfig::getOuterContextDepth() const {
return reachesIntoOuterContext & ~SUPPRESS_PRECEDENCE_FILTER;
}
bool ATNConfig::isPrecedenceFilterSuppressed() const {
return (reachesIntoOuterContext & SUPPRESS_PRECEDENCE_FILTER) != 0;
}
void ATNConfig::setPrecedenceFilterSuppressed(bool value) {
if (value) {
reachesIntoOuterContext |= SUPPRESS_PRECEDENCE_FILTER;
} else {
reachesIntoOuterContext &= ~SUPPRESS_PRECEDENCE_FILTER;
}
}
bool ATNConfig::operator == (const ATNConfig &other) const {
return state->stateNumber == other.state->stateNumber && alt == other.alt &&
((context == other.context) || (*context == *other.context)) &&
*semanticContext == *other.semanticContext &&
isPrecedenceFilterSuppressed() == other.isPrecedenceFilterSuppressed();
}
bool ATNConfig::operator != (const ATNConfig &other) const {
return !operator==(other);
}
std::string ATNConfig::toString() {
return toString(true);
}
std::string ATNConfig::toString(bool showAlt) {
std::stringstream ss;
ss << "(";
ss << state->toString();
if (showAlt) {
ss << "," << alt;
}
if (context) {
ss << ",[" << context->toString() << "]";
}
if (semanticContext != nullptr && semanticContext != SemanticContext::NONE) {
ss << "," << semanticContext.get();
}
if (getOuterContextDepth() > 0) {
ss << ",up=" << getOuterContextDepth();
}
ss << ')';
return ss.str();
}
|
