/
join.cpp
355 lines (329 loc) · 14 KB
/
join.cpp
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
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
#include <dplyr.h>
using namespace dplyr ;
using namespace Rcpp ;
namespace dplyr{
// -------------- (int,lgl)
template <int LHS_RTYPE, int RHS_RTYPE>
inline size_t hash_int_int( JoinVisitorImpl<LHS_RTYPE,RHS_RTYPE>& joiner, int i){
return joiner.RHS_hash_fun( i>=0 ? joiner.left[i] : joiner.right[-i-1] ) ;
}
template <>
inline size_t JoinVisitorImpl<INTSXP,LGLSXP>::hash( int i){
return hash_int_int<INTSXP,LGLSXP>( *this, i) ;
}
template <>
inline size_t JoinVisitorImpl<LGLSXP,INTSXP>::hash( int i){
return hash_int_int<LGLSXP,INTSXP>( *this, i) ;
}
template <int LHS_RTYPE, int RHS_RTYPE>
inline SEXP subset_join_int_int( JoinVisitorImpl<LHS_RTYPE,RHS_RTYPE>& joiner, const std::vector<int>& indices ){
int n = indices.size() ;
IntegerVector res = no_init(n) ;
for( int i=0; i<n; i++) {
int index = indices[i] ;
if( index >= 0 ){
res[i] = joiner.left[index] ;
} else {
res[i] = joiner.right[-index-1] ;
}
}
return res ;
}
template <>
inline SEXP JoinVisitorImpl<INTSXP,LGLSXP>::subset( const std::vector<int>& indices ){
return subset_join_int_int<INTSXP,LGLSXP>( *this, indices ) ;
}
template <>
inline SEXP JoinVisitorImpl<LGLSXP,INTSXP>::subset( const std::vector<int>& indices ){
return subset_join_int_int<LGLSXP,INTSXP>( *this, indices ) ;
}
template <int LHS_RTYPE, int RHS_RTYPE>
inline SEXP subset_join_int_int( JoinVisitorImpl<LHS_RTYPE,RHS_RTYPE>& joiner, const VisitorSetIndexSet<DataFrameJoinVisitors>& set ){
int n = set.size() ;
IntegerVector res = no_init(n) ;
VisitorSetIndexSet<DataFrameJoinVisitors>::const_iterator it=set.begin() ;
for( int i=0; i<n; i++, ++it) {
int index = *it ;
if( index >= 0 ){
res[i] = joiner.left[index] ;
} else {
res[i] = joiner.right[-index-1] ;
}
}
return res ;
}
template <>
inline SEXP JoinVisitorImpl<INTSXP,LGLSXP>::subset( const VisitorSetIndexSet<DataFrameJoinVisitors>& set ){
return subset_join_int_int<INTSXP,LGLSXP>( *this, set ) ;
}
template <>
inline SEXP JoinVisitorImpl<LGLSXP,INTSXP>::subset( const VisitorSetIndexSet<DataFrameJoinVisitors>& set ){
return subset_join_int_int<LGLSXP,INTSXP>( *this, set ) ;
}
// -------------- (int,double)
template <int RTYPE>
inline size_t hash_int_double( JoinVisitorImpl<RTYPE,REALSXP>& joiner, int i ){
if( i>=0 ){
int val = joiner.left[i] ;
if( val == NA_INTEGER ) return joiner.RHS_hash_fun( NA_REAL );
return joiner.RHS_hash_fun( (double)val );
}
return joiner.RHS_hash_fun( joiner.right[-i-1] ) ;
}
template <>
inline size_t JoinVisitorImpl<INTSXP,REALSXP>::hash(int i){
return hash_int_double<INTSXP>( *this, i );
}
template <>
inline size_t JoinVisitorImpl<LGLSXP,REALSXP>::hash(int i){
return hash_int_double<LGLSXP>( *this, i );
}
template <int RTYPE>
inline SEXP subset_join_int_double( JoinVisitorImpl<RTYPE,REALSXP>& joiner, const std::vector<int>& indices ){
int n = indices.size() ;
NumericVector res = no_init(n) ;
for( int i=0; i<n; i++) {
int index = indices[i] ;
if( index >= 0 ){
res[i] = Rcpp::internal::r_coerce<INTSXP,REALSXP>( joiner.left[index] ) ;
} else {
res[i] = joiner.right[-index-1] ;
}
}
return res ;
}
template <>
inline SEXP JoinVisitorImpl<INTSXP,REALSXP>::subset( const std::vector<int>& indices ){
return subset_join_int_double<INTSXP>( *this, indices ) ;
}
template <>
inline SEXP JoinVisitorImpl<LGLSXP,REALSXP>::subset( const std::vector<int>& indices ){
return subset_join_int_double<LGLSXP>( *this, indices ) ;
}
template <int RTYPE>
inline SEXP subset_join_int_double( JoinVisitorImpl<RTYPE,REALSXP>& joiner, const VisitorSetIndexSet<DataFrameJoinVisitors>& set ){
int n = set.size() ;
NumericVector res = no_init(n) ;
VisitorSetIndexSet<DataFrameJoinVisitors>::const_iterator it=set.begin() ;
for( int i=0; i<n; i++, ++it) {
int index = *it ;
if( index >= 0){
res[i] = Rcpp::internal::r_coerce<INTSXP,REALSXP>( joiner.left[index] ) ;
} else {
res[i] = joiner.right[-index-1] ;
}
}
return res ;
}
template <>
inline SEXP JoinVisitorImpl<INTSXP,REALSXP>::subset( const VisitorSetIndexSet<DataFrameJoinVisitors>& set ){
return subset_join_int_double<INTSXP>(*this, set );
}
template <>
inline SEXP JoinVisitorImpl<LGLSXP,REALSXP>::subset( const VisitorSetIndexSet<DataFrameJoinVisitors>& set ){
return subset_join_int_double<LGLSXP>(*this, set );
}
// -------------- (double,int)
template <int RTYPE>
inline size_t hash_double_int( JoinVisitorImpl<REALSXP,RTYPE>& joiner, int i ){
if( i<0 ){
int val = joiner.left[-i-1] ;
if( val == NA_INTEGER ) return joiner.LHS_hash_fun( NA_REAL );
return joiner.LHS_hash_fun( (double)val );
}
return joiner.LHS_hash_fun( joiner.right[i] ) ;
}
template <>
inline size_t JoinVisitorImpl<REALSXP,INTSXP>::hash(int i){
return hash_double_int<INTSXP>( *this, i );
}
template <>
inline size_t JoinVisitorImpl<REALSXP,LGLSXP>::hash(int i){
return hash_double_int<LGLSXP>( *this, i );
}
template <int RTYPE>
inline SEXP subset_join_double_int( JoinVisitorImpl<REALSXP,RTYPE>& joiner, const std::vector<int>& indices ){
int n = indices.size() ;
NumericVector res = no_init(n) ;
for( int i=0; i<n; i++) {
int index = indices[i] ;
if( index < 0 ){
res[i] = Rcpp::internal::r_coerce<INTSXP,REALSXP>( joiner.right[-index-1] ) ;
} else {
res[i] = joiner.left[index] ;
}
}
return res ;
}
template <>
inline SEXP JoinVisitorImpl<REALSXP,INTSXP>::subset( const std::vector<int>& indices ){
return subset_join_double_int<INTSXP>( *this, indices ) ;
}
template <>
inline SEXP JoinVisitorImpl<REALSXP,LGLSXP>::subset( const std::vector<int>& indices ){
return subset_join_double_int<LGLSXP>( *this, indices ) ;
}
template <int RTYPE>
inline SEXP subset_join_double_int( JoinVisitorImpl<REALSXP,RTYPE>& joiner, const VisitorSetIndexSet<DataFrameJoinVisitors>& set ){
int n = set.size() ;
NumericVector res = no_init(n) ;
VisitorSetIndexSet<DataFrameJoinVisitors>::const_iterator it=set.begin() ;
for( int i=0; i<n; i++, ++it) {
int index = *it ;
if( index < 0){
res[i] = Rcpp::internal::r_coerce<INTSXP,REALSXP>( joiner.right[-index-1] ) ;
} else {
res[i] = joiner.left[index] ;
}
}
return res ;
}
template <>
inline SEXP JoinVisitorImpl<REALSXP,INTSXP>::subset( const VisitorSetIndexSet<DataFrameJoinVisitors>& set ){
return subset_join_double_int<INTSXP>(*this, set );
}
template <>
inline SEXP JoinVisitorImpl<REALSXP,LGLSXP>::subset( const VisitorSetIndexSet<DataFrameJoinVisitors>& set ){
return subset_join_double_int<LGLSXP>(*this, set );
}
// -----------------
inline void incompatible_join_visitor(SEXP left, SEXP right, const std::string& name) {
std::stringstream s ;
s << "Can't join on '" << name << "' because of incompatible types (" << get_single_class(left) << "/" << get_single_class(right) << ")" ;
stop( s.str() ) ;
}
JoinVisitor* join_visitor( SEXP left, SEXP right, const std::string& name){
// if( TYPEOF(left) != TYPEOF(right) ){
// std::stringstream ss ;
// ss << "Can't join on '"
// << name
// << "' because of incompatible types ("
// << get_single_class(left)
// << "/"
// << get_single_class(right)
// << ")" ;
// stop( ss.str() ) ;
// }
switch( TYPEOF(left) ){
case INTSXP:
{
bool lhs_factor = Rf_inherits( left, "factor" ) ;
switch( TYPEOF(right) ){
case INTSXP:
{
bool rhs_factor = Rf_inherits( right, "factor" ) ;
if( lhs_factor && rhs_factor){
return new JoinFactorFactorVisitor(left, right) ;
} else if( !lhs_factor && !rhs_factor) {
return new JoinVisitorImpl<INTSXP, INTSXP>( left, right ) ;
}
break ;
}
case REALSXP:
{
if( lhs_factor ){
incompatible_join_visitor(left, right, name) ;
} else if( is_bare_vector(right) ) {
return new JoinVisitorImpl<INTSXP, REALSXP>( left, right) ;
} else {
incompatible_join_visitor(left, right, name) ;
}
break ;
// what else: perhaps we can have INTSXP which is a Date and REALSXP which is a Date too ?
}
case LGLSXP:
{
if( lhs_factor ){
incompatible_join_visitor(left, right, name) ;
} else {
return new JoinVisitorImpl<INTSXP, LGLSXP>( left, right) ;
}
break ;
}
case STRSXP:
{
if( lhs_factor ){
return new JoinFactorStringVisitor( left, right );
}
}
default: break ;
}
break ;
}
case REALSXP:
{
bool lhs_date = Rf_inherits( left, "Date" ) ;
bool lhs_time = Rf_inherits( left, "POSIXct" );
switch( TYPEOF(right) ){
case REALSXP:
{
if( Rf_inherits( right, "Date") ){
if(lhs_date) return new DateJoinVisitor(left, right ) ;
incompatible_join_visitor(left, right, name) ;
}
if( Rf_inherits( right, "POSIXct" ) ){
if( lhs_time ) return new POSIXctJoinVisitor(left, right ) ;
incompatible_join_visitor(left, right, name) ;
}
if( is_bare_vector( right ) ){
return new JoinVisitorImpl<REALSXP, REALSXP>( left, right) ;
}
break ;
}
case INTSXP:
{
if( is_bare_vector(right) ){
return new JoinVisitorImpl<REALSXP, INTSXP>( left, right) ;
}
}
default: break ;
}
}
case LGLSXP:
{
switch( TYPEOF(right) ){
case LGLSXP:
{
return new JoinVisitorImpl<LGLSXP,LGLSXP> ( left, right ) ;
}
case INTSXP:
{
if( is_bare_vector(right) ){
return new JoinVisitorImpl<LGLSXP, INTSXP>( left, right ) ;
}
break ;
}
case REALSXP:
{
if( is_bare_vector(right) ){
return new JoinVisitorImpl<LGLSXP, REALSXP>( left, right ) ;
}
}
default: break ;
}
break ;
}
case STRSXP:
{
switch( TYPEOF(right) ){
case INTSXP:
{
if( Rf_inherits(right, "factor" ) ){
return new JoinStringFactorVisitor( left, right ) ;
}
break ;
}
case STRSXP:
{
return new JoinVisitorImpl<STRSXP,STRSXP> ( left, right ) ;
}
default: break ;
}
break ;
}
default: break ;
}
incompatible_join_visitor(left, right, name) ;
return 0 ;
}
}