forked from sqlancer/sqlancer
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathYSQLFunction.java
More file actions
283 lines (241 loc) · 9.02 KB
/
YSQLFunction.java
File metadata and controls
283 lines (241 loc) · 9.02 KB
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
package sqlancer.yugabyte.ysql.ast;
import sqlancer.yugabyte.ysql.YSQLSchema.YSQLDataType;
public class YSQLFunction implements YSQLExpression {
private final String func;
private final YSQLExpression[] args;
private final YSQLDataType returnType;
private YSQLFunctionWithResult functionWithKnownResult;
public YSQLFunction(YSQLFunctionWithResult func, YSQLDataType returnType, YSQLExpression... args) {
functionWithKnownResult = func;
this.func = func.getName();
this.returnType = returnType;
this.args = args.clone();
}
public YSQLFunction(YSQLFunctionWithUnknownResult f, YSQLDataType returnType, YSQLExpression... args) {
this.func = f.getName();
this.returnType = returnType;
this.args = args.clone();
}
public String getFunctionName() {
return func;
}
public YSQLExpression[] getArguments() {
return args.clone();
}
@Override
public YSQLDataType getExpressionType() {
return returnType;
}
@Override
public YSQLConstant getExpectedValue() {
if (functionWithKnownResult == null) {
return null;
}
YSQLConstant[] constants = new YSQLConstant[args.length];
for (int i = 0; i < constants.length; i++) {
constants[i] = args[i].getExpectedValue();
if (constants[i] == null) {
return null;
}
}
return functionWithKnownResult.apply(constants, args);
}
public enum YSQLFunctionWithResult {
ABS(1, "abs") {
@Override
public YSQLConstant apply(YSQLConstant[] evaluatedArgs, YSQLExpression... args) {
if (evaluatedArgs[0].isNull()) {
return YSQLConstant.createNullConstant();
} else {
return YSQLConstant.createIntConstant(Math.abs(evaluatedArgs[0].cast(YSQLDataType.INT).asInt()));
}
}
@Override
public boolean supportsReturnType(YSQLDataType type) {
return type == YSQLDataType.INT;
}
@Override
public YSQLDataType[] getInputTypesForReturnType(YSQLDataType returnType, int nrArguments) {
return new YSQLDataType[] { returnType };
}
},
LOWER(1, "lower") {
@Override
public YSQLConstant apply(YSQLConstant[] evaluatedArgs, YSQLExpression... args) {
if (evaluatedArgs[0].isNull()) {
return YSQLConstant.createNullConstant();
} else {
String text = evaluatedArgs[0].asString();
return YSQLConstant.createTextConstant(text.toLowerCase());
}
}
@Override
public boolean supportsReturnType(YSQLDataType type) {
return type == YSQLDataType.TEXT;
}
@Override
public YSQLDataType[] getInputTypesForReturnType(YSQLDataType returnType, int nrArguments) {
return new YSQLDataType[] { YSQLDataType.TEXT };
}
},
LENGTH(1, "length") {
@Override
public YSQLConstant apply(YSQLConstant[] evaluatedArgs, YSQLExpression... args) {
if (evaluatedArgs[0].isNull()) {
return YSQLConstant.createNullConstant();
}
String text = evaluatedArgs[0].asString();
return YSQLConstant.createIntConstant(text.length());
}
@Override
public boolean supportsReturnType(YSQLDataType type) {
return type == YSQLDataType.INT;
}
@Override
public YSQLDataType[] getInputTypesForReturnType(YSQLDataType returnType, int nrArguments) {
return new YSQLDataType[] { YSQLDataType.TEXT };
}
},
UPPER(1, "upper") {
@Override
public YSQLConstant apply(YSQLConstant[] evaluatedArgs, YSQLExpression... args) {
if (evaluatedArgs[0].isNull()) {
return YSQLConstant.createNullConstant();
} else {
String text = evaluatedArgs[0].asString();
return YSQLConstant.createTextConstant(text.toUpperCase());
}
}
@Override
public boolean supportsReturnType(YSQLDataType type) {
return type == YSQLDataType.TEXT;
}
@Override
public YSQLDataType[] getInputTypesForReturnType(YSQLDataType returnType, int nrArguments) {
return new YSQLDataType[] { YSQLDataType.TEXT };
}
},
// NULL_IF(2, "nullif") {
//
// @Override
// public YSQLConstant apply(YSQLConstant[] evaluatedArgs, YSQLExpression[] args) {
// YSQLConstant equals = evaluatedArgs[0].isEquals(evaluatedArgs[1]);
// if (equals.isBoolean() && equals.asBoolean()) {
// return YSQLConstant.createNullConstant();
// } else {
// // TODO: SELECT (nullif('1', FALSE)); yields '1', but should yield TRUE
// return evaluatedArgs[0];
// }
// }
//
// @Override
// public boolean supportsReturnType(YSQLDataType type) {
// return true;
// }
//
// @Override
// public YSQLDataType[] getInputTypesForReturnType(YSQLDataType returnType, int nrArguments) {
// return getType(nrArguments, returnType);
// }
//
// @Override
// public boolean checkArguments(YSQLExpression[] constants) {
// for (YSQLExpression e : constants) {
// if (!(e instanceof YSQLNullConstant)) {
// return true;
// }
// }
// return false;
// }
//
// },
NUM_NONNULLS(1, "num_nonnulls") {
@Override
public YSQLConstant apply(YSQLConstant[] args, YSQLExpression... origArgs) {
int nr = 0;
for (YSQLConstant c : args) {
if (!c.isNull()) {
nr++;
}
}
return YSQLConstant.createIntConstant(nr);
}
@Override
public YSQLDataType[] getInputTypesForReturnType(YSQLDataType returnType, int nrArguments) {
return getRandomTypes(nrArguments);
}
@Override
public boolean supportsReturnType(YSQLDataType type) {
return type == YSQLDataType.INT;
}
@Override
public boolean isVariadic() {
return true;
}
},
NUM_NULLS(1, "num_nulls") {
@Override
public YSQLConstant apply(YSQLConstant[] args, YSQLExpression... origArgs) {
int nr = 0;
for (YSQLConstant c : args) {
if (c.isNull()) {
nr++;
}
}
return YSQLConstant.createIntConstant(nr);
}
@Override
public YSQLDataType[] getInputTypesForReturnType(YSQLDataType returnType, int nrArguments) {
return getRandomTypes(nrArguments);
}
@Override
public boolean supportsReturnType(YSQLDataType type) {
return type == YSQLDataType.INT;
}
@Override
public boolean isVariadic() {
return true;
}
};
final int nrArgs;
private final String functionName;
private final boolean variadic;
YSQLFunctionWithResult(int nrArgs, String functionName) {
this.nrArgs = nrArgs;
this.functionName = functionName;
this.variadic = false;
}
public YSQLDataType[] getRandomTypes(int nr) {
YSQLDataType[] types = new YSQLDataType[nr];
for (int i = 0; i < types.length; i++) {
types[i] = YSQLDataType.getRandomType();
}
return types;
}
/**
* Gets the number of arguments if the function is non-variadic. If the function is variadic, the minimum number
* of arguments is returned.
*
* @return the number of arguments
*/
public int getNrArgs() {
return nrArgs;
}
public abstract YSQLConstant apply(YSQLConstant[] evaluatedArgs, YSQLExpression... args);
@Override
public String toString() {
return functionName;
}
public boolean isVariadic() {
return variadic;
}
public String getName() {
return functionName;
}
public abstract boolean supportsReturnType(YSQLDataType type);
public abstract YSQLDataType[] getInputTypesForReturnType(YSQLDataType returnType, int nrArguments);
public boolean checkArguments(YSQLExpression... constants) {
return true;
}
}
}