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import org.checkerframework.framework.qual.ConditionalPostconditionAnnotation;
import org.checkerframework.framework.qual.PostconditionAnnotation;
import org.checkerframework.framework.qual.PreconditionAnnotation;
import org.checkerframework.framework.qual.QualifierArgument;
import testlib.util.Value;
public class CustomContractWithArgs {
// Postcondition for Value
@PostconditionAnnotation(qualifier = Value.class)
@interface EnsuresValue {
public String[] value();
@QualifierArgument("value")
public int targetValue();
}
// Conditional postcondition for LTLengthOf
@ConditionalPostconditionAnnotation(qualifier = Value.class)
@interface EnsuresValueIf {
public boolean result();
public String[] expression();
@QualifierArgument("value")
public int targetValue();
}
// Precondition for LTLengthOf
@PreconditionAnnotation(qualifier = Value.class)
@interface RequiresValue {
public String[] value();
@QualifierArgument("value")
public int targetValue();
}
class Base {
Object o;
@Value(10) Object o10;
@EnsuresValue(value = "o", targetValue = 10)
void ensures() {
o = o10;
}
@EnsuresValue(value = "o", targetValue = 9)
// :: error: (contracts.postcondition.not.satisfied)
void ensuresWrong() {
o = o10;
}
void ensuresUse() {
ensures();
o10 = o;
}
@EnsuresValueIf(expression = "o", targetValue = 10, result = true)
boolean ensuresIf(boolean b) {
if (b) {
o = o10;
return true;
} else {
return false;
}
}
@RequiresValue(value = "o", targetValue = 10)
void requires() {
o10 = o;
}
void use(boolean b) {
if (ensuresIf(b)) {
o10 = o;
requires();
}
// :: error: (assignment.type.incompatible)
o10 = o;
// :: error: (contracts.precondition.not.satisfied)
requires();
}
}
}
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