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
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
|
/****************************************************************************
**
** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the $MODULE$ of the Qt Toolkit.
**
** $TROLLTECH_DUAL_LICENSE$
**
****************************************************************************/
#include "qxsdstatemachinebuilder_p.h"
#include "qxsdelement_p.h"
#include "qxsdmodelgroup_p.h"
#include "qxsdschemahelper_p.h"
QT_BEGIN_NAMESPACE
using namespace QPatternist;
/*
* This methods takes a list of objects and returns a list of list
* of all combinations the objects can be ordered.
*
* e.g. input = [ 1, 2, 3 ]
* output = [
* [ 1, 2, 3 ],
* [ 1, 3, 2 ],
* [ 2, 1, 3 ],
* [ 2, 3, 1 ],
* [ 3, 1, 2 ],
* [ 3, 2, 1 ]
* ]
*
* The method is used to create all possible combinations for the particles
* in an <all> model group.
*/
template <typename T>
QList< QList<T> > allCombinations(const QList<T> &input)
{
if (input.count() == 1)
return (QList< QList<T> >() << input);
QList< QList<T> > result;
for (int i = 0; i < input.count(); ++i) {
QList<T> subList = input;
T value = subList.takeAt(i);
QList< QList<T> > subLists = allCombinations(subList);
for (int j = 0; j < subLists.count(); ++j) {
subLists[j].prepend(value);
}
result << subLists;
}
return result;
}
XsdStateMachineBuilder::XsdStateMachineBuilder(XsdStateMachine<XsdTerm::Ptr> *machine, const NamePool::Ptr &namePool, Mode mode)
: m_stateMachine(machine), m_namePool(namePool), m_mode(mode)
{
}
XsdStateMachine<XsdTerm::Ptr>::StateId XsdStateMachineBuilder::reset()
{
Q_ASSERT(m_stateMachine);
m_stateMachine->clear();
return m_stateMachine->addState(XsdStateMachine<XsdTerm::Ptr>::EndState);
}
XsdStateMachine<XsdTerm::Ptr>::StateId XsdStateMachineBuilder::addStartState(XsdStateMachine<XsdTerm::Ptr>::StateId state)
{
const XsdStateMachine<XsdTerm::Ptr>::StateId startState = m_stateMachine->addState(XsdStateMachine<XsdTerm::Ptr>::StartState);
m_stateMachine->addEpsilonTransition(startState, state);
return startState;
}
/*
* Create the FSA according to Algorithm Tp(S) from http://www.ltg.ed.ac.uk/~ht/XML_Europe_2003.html
*/
XsdStateMachine<XsdTerm::Ptr>::StateId XsdStateMachineBuilder::buildParticle(const XsdParticle::Ptr &particle, XsdStateMachine<XsdTerm::Ptr>::StateId endState)
{
XsdStateMachine<XsdTerm::Ptr>::StateId currentStartState = endState;
XsdStateMachine<XsdTerm::Ptr>::StateId currentEndState = endState;
// 2
if (particle->maximumOccursUnbounded()) {
const XsdStateMachine<XsdTerm::Ptr>::StateId t = m_stateMachine->addState(XsdStateMachine<XsdTerm::Ptr>::InternalState);
const XsdStateMachine<XsdTerm::Ptr>::StateId n = buildTerm(particle->term(), t);
m_stateMachine->addEpsilonTransition(t, n);
m_stateMachine->addEpsilonTransition(n, endState);
currentEndState = t;
currentStartState = t;
} else { // 3
int count = (particle->maximumOccurs() - particle->minimumOccurs());
if (count > 100)
count = 100;
for (int i = 0; i < count; ++i) {
currentStartState = buildTerm(particle->term(), currentEndState);
m_stateMachine->addEpsilonTransition(currentStartState, endState);
currentEndState = currentStartState;
}
}
int minOccurs = particle->minimumOccurs();
if (minOccurs > 100)
minOccurs = 100;
for (int i = 0; i < minOccurs; ++i) {
currentStartState = buildTerm(particle->term(), currentEndState);
currentEndState = currentStartState;
}
return currentStartState;
}
/*
* Create the FSA according to Algorithm Tt(S) from http://www.ltg.ed.ac.uk/~ht/XML_Europe_2003.html
*/
XsdStateMachine<XsdTerm::Ptr>::StateId XsdStateMachineBuilder::buildTerm(const XsdTerm::Ptr &term, XsdStateMachine<XsdTerm::Ptr>::StateId endState)
{
if (term->isWildcard()) { // 1
const XsdStateMachine<XsdTerm::Ptr>::StateId b = m_stateMachine->addState(XsdStateMachine<XsdTerm::Ptr>::InternalState);
m_stateMachine->addTransition(b, term, endState);
return b;
} else if (term->isElement()) { // 2
const XsdStateMachine<XsdTerm::Ptr>::StateId b = m_stateMachine->addState(XsdStateMachine<XsdTerm::Ptr>::InternalState);
m_stateMachine->addTransition(b, term, endState);
const XsdElement::Ptr element(term);
if (m_mode == CheckingMode) {
const XsdElement::List substGroups = element->substitutionGroups();
for (int i = 0; i < substGroups.count(); ++i)
m_stateMachine->addTransition(b, substGroups.at(i), endState);
} else if (m_mode == ValidatingMode) {
const XsdElement::List substGroups = element->substitutionGroups();
for (int i = 0; i < substGroups.count(); ++i) {
if (XsdSchemaHelper::substitutionGroupOkTransitive(element, substGroups.at(i), m_namePool))
m_stateMachine->addTransition(b, substGroups.at(i), endState);
}
}
return b;
} else if (term->isModelGroup()) {
const XsdModelGroup::Ptr group(term);
if (group->compositor() == XsdModelGroup::ChoiceCompositor) { // 3
const XsdStateMachine<XsdTerm::Ptr>::StateId b = m_stateMachine->addState(XsdStateMachine<XsdTerm::Ptr>::InternalState);
for (int i = 0; i < group->particles().count(); ++i) {
const XsdParticle::Ptr particle(group->particles().at(i));
if (particle->maximumOccurs() != 0) {
const XsdStateMachine<XsdTerm::Ptr>::StateId state = buildParticle(particle, endState);
m_stateMachine->addEpsilonTransition(b, state);
}
}
return b;
} else if (group->compositor() == XsdModelGroup::SequenceCompositor) { // 4
XsdStateMachine<XsdTerm::Ptr>::StateId currentStartState = endState;
XsdStateMachine<XsdTerm::Ptr>::StateId currentEndState = endState;
for (int i = (group->particles().count() - 1); i >= 0; --i) { // iterate reverse
const XsdParticle::Ptr particle(group->particles().at(i));
if (particle->maximumOccurs() != 0) {
currentStartState = buildParticle(particle, currentEndState);
currentEndState = currentStartState;
}
}
return currentStartState;
} else if (group->compositor() == XsdModelGroup::AllCompositor) {
const XsdStateMachine<XsdTerm::Ptr>::StateId newStartState = m_stateMachine->addState(XsdStateMachine<XsdTerm::Ptr>::InternalState);
const QList<XsdParticle::List> list = allCombinations(group->particles());
for (int i = 0; i < list.count(); ++i) {
XsdStateMachine<XsdTerm::Ptr>::StateId currentStartState = endState;
XsdStateMachine<XsdTerm::Ptr>::StateId currentEndState = endState;
const XsdParticle::List particles = list.at(i);
for (int j = (particles.count() - 1); j >= 0; --j) { // iterate reverse
const XsdParticle::Ptr particle(particles.at(j));
if (particle->maximumOccurs() != 0) {
currentStartState = buildParticle(particle, currentEndState);
currentEndState = currentStartState;
}
}
m_stateMachine->addEpsilonTransition(newStartState, currentStartState);
}
if (list.isEmpty())
return endState;
else
return newStartState;
}
}
Q_ASSERT(false);
return 0;
}
static void internalParticleLookupMap(const XsdParticle::Ptr &particle, QHash<XsdTerm::Ptr, XsdParticle::Ptr> &hash)
{
hash.insert(particle->term(), particle);
if (particle->term()->isModelGroup()) {
const XsdModelGroup::Ptr group(particle->term());
const XsdParticle::List particles = group->particles();
for (int i = 0; i < particles.count(); ++i)
internalParticleLookupMap(particles.at(i), hash);
}
}
QHash<XsdTerm::Ptr, XsdParticle::Ptr> XsdStateMachineBuilder::particleLookupMap(const XsdParticle::Ptr &particle)
{
QHash<XsdTerm::Ptr, XsdParticle::Ptr> result;
internalParticleLookupMap(particle, result);
return result;
}
QT_END_NAMESPACE
|
