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package sqlancer.cockroachdb.ast;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import sqlancer.Randomly;
import sqlancer.cockroachdb.CockroachDBSchema.CockroachDBCompositeDataType;
import sqlancer.cockroachdb.CockroachDBSchema.CockroachDBDataType;
import sqlancer.cockroachdb.gen.CockroachDBExpressionGenerator;
public enum CockroachDBFunction {
IF(null) {
@Override
public boolean isCompatibleWithReturnType(CockroachDBCompositeDataType returnType) {
return true;
}
@Override
public CockroachDBDataType[] getArgumentTypes(CockroachDBCompositeDataType returnType) {
return new CockroachDBDataType[] { CockroachDBDataType.BOOL, returnType.getPrimitiveDataType(),
returnType.getPrimitiveDataType() };
}
},
NULLIF(null) {
@Override
public boolean isCompatibleWithReturnType(CockroachDBCompositeDataType returnType) {
return true;
}
@Override
public CockroachDBDataType[] getArgumentTypes(CockroachDBCompositeDataType returnType) {
return new CockroachDBDataType[] { returnType.getPrimitiveDataType(), returnType.getPrimitiveDataType() };
}
},
// bool functions
ILIKE_ESCAPE(CockroachDBDataType.BOOL, CockroachDBDataType.STRING, CockroachDBDataType.STRING,
CockroachDBDataType.STRING) {
@Override
List<CockroachDBExpression> getArgumentsForReturnType(CockroachDBExpressionGenerator gen, int depth,
CockroachDBDataType[] argumentTypes2, CockroachDBCompositeDataType returnType2) {
return getLastArgAsConstantString(gen, depth, argumentTypes2, returnType2);
}
private List<CockroachDBExpression> getLastArgAsConstantString(CockroachDBExpressionGenerator gen, int depth,
CockroachDBDataType[] argumentTypes2, CockroachDBCompositeDataType returnType2) {
List<CockroachDBExpression> args = super.getArgumentsForReturnType(gen, depth, argumentTypes2, returnType2);
args.set(2, CockroachDBConstant.createStringConstant(gen.getGlobalState().getRandomly().getChar()));
return args;
}
},
// MATH and numeric functions
ABS_INT("ABS", CockroachDBDataType.INT, CockroachDBDataType.INT),
// ABS_FLOAT("ABS", CockroachDBDataType.INT, CockroachDBDataType.FLOAT),
ACOS(CockroachDBDataType.FLOAT, CockroachDBDataType.FLOAT),
// string and byte functions
ASCII(CockroachDBDataType.INT, CockroachDBDataType.STRING), // ascii(val: string) → int
BIT_LENGTH1("BIT_LENGTH", CockroachDBDataType.INT, CockroachDBDataType.BYTES), // bit_length(val: bytes) → int
BIT_LENGTH2("BIT_LENGTH", CockroachDBDataType.INT, CockroachDBDataType.STRING), // bit_length(val: string) → int
BTRIM1("BTRIM", CockroachDBDataType.STRING, CockroachDBDataType.STRING, CockroachDBDataType.STRING), // btrim(input:
// string,
// trim_chars:
// string) →
// string
BTRIM2("BTRIM", CockroachDBDataType.STRING, CockroachDBDataType.STRING), // btrim(val: string) → string
CHAR_LENGTH1("CHAR_LENGTH", CockroachDBDataType.INT, CockroachDBDataType.BYTES), // char_length(val: bytes) → int
CHAR_LENGTH2("CHAR_LENGTH", CockroachDBDataType.INT, CockroachDBDataType.STRING),
CHARACTER_LENGTH1("CHARACTER_LENGTH", CockroachDBDataType.INT, CockroachDBDataType.STRING),
CHARACTER_LENGTH2("CHARACTER_LENGTH", CockroachDBDataType.INT, CockroachDBDataType.BYTES),
CHR(CockroachDBDataType.STRING, CockroachDBDataType.INT),
INITCAP(CockroachDBDataType.STRING, CockroachDBDataType.STRING),
LEFT1("LEFT", CockroachDBDataType.BYTES, CockroachDBDataType.BYTES, CockroachDBDataType.INT),
LEFT2("LEFT", CockroachDBDataType.STRING, CockroachDBDataType.STRING, CockroachDBDataType.INT),
LENGTH1("LENGTH", CockroachDBDataType.INT, CockroachDBDataType.BYTES),
LENGTH2("LENGTH", CockroachDBDataType.INT, CockroachDBDataType.STRING),
LOWER(CockroachDBDataType.STRING, CockroachDBDataType.STRING),
// LPAD(CockroachDBDataType.STRING, CockroachDBDataType.STRING, CockroachDBDataType.INT), // TODO: can cause out of
// memory errors
LTRIM(CockroachDBDataType.STRING, CockroachDBDataType.STRING, CockroachDBDataType.STRING),
OVERLAY(CockroachDBDataType.STRING, CockroachDBDataType.STRING, CockroachDBDataType.STRING,
CockroachDBDataType.INT),
QUOTE_IDENT(CockroachDBDataType.STRING, CockroachDBDataType.STRING),
QUOTE_LITERAL(CockroachDBDataType.STRING, CockroachDBDataType.STRING),
QUOTE_NULLABLE(CockroachDBDataType.STRING, CockroachDBDataType.STRING),
REVERSE(CockroachDBDataType.STRING, CockroachDBDataType.STRING),
STRPOS(CockroachDBDataType.INT, CockroachDBDataType.STRING, CockroachDBDataType.STRING),
SPLIT_PART(CockroachDBDataType.STRING, CockroachDBDataType.STRING, CockroachDBDataType.STRING,
CockroachDBDataType.INT),
SUBSTRING1("SUBSTRING", CockroachDBDataType.STRING, CockroachDBDataType.STRING, CockroachDBDataType.STRING),
SUBSTRING2("SUBSTRING", CockroachDBDataType.STRING, CockroachDBDataType.STRING, CockroachDBDataType.STRING,
CockroachDBDataType.STRING),
SUBSTRING3("SUBSTRING", CockroachDBDataType.STRING, CockroachDBDataType.STRING, CockroachDBDataType.INT),
SUBSTRING4("SUBSTRING", CockroachDBDataType.STRING, CockroachDBDataType.STRING, CockroachDBDataType.INT,
CockroachDBDataType.INT),
/* https://github.com/cockroachdb/cockroach/issues/44152 */
TO_ENGLISH(CockroachDBDataType.STRING, CockroachDBDataType.INT),
TO_HEX1("TO_HEX", CockroachDBDataType.STRING, CockroachDBDataType.INT),
TO_HEX("TO_HEX", CockroachDBDataType.STRING, CockroachDBDataType.BYTES),
TO_IP(CockroachDBDataType.BYTES, CockroachDBDataType.STRING),
TO_UUID(CockroachDBDataType.BYTES, CockroachDBDataType.STRING),
TRANSLATE(CockroachDBDataType.STRING, CockroachDBDataType.STRING, CockroachDBDataType.STRING,
CockroachDBDataType.STRING),
UPPER(CockroachDBDataType.STRING, CockroachDBDataType.STRING),
REGEXP_REPLACE(CockroachDBDataType.STRING, CockroachDBDataType.STRING, CockroachDBDataType.STRING,
CockroachDBDataType.STRING),
MD5(CockroachDBDataType.STRING) {
@Override
public CockroachDBDataType[] getArgumentTypes(CockroachDBCompositeDataType returnType) {
int nrArgs = Randomly.smallNumber() + 1;
CockroachDBDataType[] argTypes = new CockroachDBDataType[nrArgs];
for (int i = 0; i < nrArgs; i++) {
argTypes[i] = CockroachDBDataType.STRING;
}
return argTypes;
}
},
// System info function
/* see https://github.com/cockroachdb/cockroach/issues/44203 */
CURRENT_DATABASE(CockroachDBDataType.STRING), CURRENT_SCHEMA(CockroachDBDataType.STRING),
CURRENT_USER(CockroachDBDataType.STRING), VERSION(CockroachDBDataType.STRING);
private CockroachDBDataType returnType;
private CockroachDBDataType[] argumentTypes;
private String functionName;
CockroachDBFunction(CockroachDBDataType returnType, CockroachDBDataType... argumentTypes) {
this.returnType = returnType;
this.argumentTypes = argumentTypes.clone();
this.functionName = toString();
}
CockroachDBFunction(CockroachDBDataType returnType) {
this.returnType = returnType;
this.argumentTypes = new CockroachDBDataType[0];
this.functionName = toString();
}
public String getFunctionName() {
return functionName;
}
CockroachDBFunction(String functionName, CockroachDBDataType returnType, CockroachDBDataType... argumentTypes) {
this.functionName = functionName;
this.returnType = returnType;
this.argumentTypes = argumentTypes.clone();
}
public boolean isCompatibleWithReturnType(CockroachDBCompositeDataType returnType) {
return this.returnType == returnType.getPrimitiveDataType();
}
public CockroachDBDataType[] getArgumentTypes(CockroachDBCompositeDataType returnType) {
return argumentTypes.clone();
}
public CockroachDBFunctionCall getCall(CockroachDBCompositeDataType returnType, CockroachDBExpressionGenerator gen,
int depth) {
CockroachDBDataType[] argumentTypes2 = getArgumentTypes(returnType);
List<CockroachDBExpression> arguments = getArgumentsForReturnType(gen, depth, argumentTypes2, returnType);
return new CockroachDBFunctionCall(this, arguments);
}
List<CockroachDBExpression> getArgumentsForReturnType(CockroachDBExpressionGenerator gen, int depth,
CockroachDBDataType[] argumentTypes2, CockroachDBCompositeDataType returnType2) {
List<CockroachDBExpression> arguments = new ArrayList<>();
/*
* This is a workaround based on the assumption that array types should refer to the same element type.
*/
CockroachDBCompositeDataType savedArrayType = null;
if (returnType2.getPrimitiveDataType() == CockroachDBDataType.ARRAY) {
savedArrayType = returnType2;
}
for (CockroachDBDataType arg : argumentTypes2) {
CockroachDBCompositeDataType type;
if (arg == CockroachDBDataType.ARRAY) {
if (savedArrayType == null) {
savedArrayType = arg.get();
}
type = savedArrayType;
} else {
type = arg.get();
}
arguments.add(gen.generateExpression(type, depth + 1));
}
return arguments;
}
public static List<CockroachDBFunction> getFunctionsCompatibleWith(CockroachDBCompositeDataType returnType) {
return Stream.of(values()).filter(f -> f.isCompatibleWithReturnType(returnType)).collect(Collectors.toList());
}
}