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import org.checkerframework.framework.qual.EnsuresQualifier;
import org.checkerframework.framework.qual.EnsuresQualifierIf;
import org.checkerframework.framework.qual.RequiresQualifier;
import testlib.util.EnsuresOdd;
import testlib.util.EnsuresOddIf;
import testlib.util.Odd;
import testlib.util.RequiresOdd;
class ContractsOverriding {
static class Super {
String f, g;
void m1() {}
void m2() {}
@RequiresOdd("g")
void m3() {}
@RequiresOdd("g")
void m3b() {}
@RequiresOdd("f")
void m4() {}
}
static class Sub extends Super {
String g;
@Override
@RequiresOdd("f")
// :: error: (contracts.precondition.override.invalid)
void m1() {}
@Override
@RequiresQualifier(expression = "f", qualifier = Odd.class)
// :: error: (contracts.precondition.override.invalid)
void m2() {}
@Override
// g is a different field than in the supertype
@RequiresOdd("g")
// :: error: (contracts.precondition.override.invalid)
void m3() {}
@Override
@RequiresOdd("super.g")
void m3b() {}
@Override
// use different string to refer to 'f' and RequiresQualifier instead
// of RequiresOdd
@RequiresQualifier(expression = "this.f", qualifier = Odd.class)
void m4() {}
}
static class Sub2 extends Super2 {
String g;
@Override
// :: error: (contracts.postcondition.not.satisfied)
void m1() {}
@Override
// :: error: (contracts.postcondition.not.satisfied)
void m2() {}
@Override
@EnsuresOdd("g")
// :: error: (contracts.postcondition.override.invalid)
void m3() {
g = odd;
}
@Override
@EnsuresOdd("f")
void m4() {
super.m4();
}
}
static class Super2 {
String f, g;
@Odd String odd;
@EnsuresOdd("f")
void m1() {
f = odd;
}
@EnsuresQualifier(expression = "f", qualifier = Odd.class)
void m2() {
f = odd;
}
@EnsuresOdd("g")
void m3() {
g = odd;
}
@EnsuresQualifier(expression = "this.f", qualifier = Odd.class)
void m4() {
f = odd;
}
}
static class Sub3 extends Super3 {
String g;
@Override
boolean m1() {
// :: error: (contracts.conditional.postcondition.not.satisfied)
return true;
}
@Override
boolean m2() {
// :: error: (contracts.conditional.postcondition.not.satisfied)
return true;
}
@Override
@EnsuresOddIf(expression = "g", result = true)
// :: error: (contracts.conditional.postcondition.true.override.invalid)
boolean m3() {
g = odd;
return true;
}
@Override
@EnsuresOddIf(expression = "f", result = true)
boolean m4() {
return super.m4();
}
@Override
// invalid result
@EnsuresOddIf(expression = "f", result = false)
boolean m5() {
f = odd;
return true;
}
@EnsuresOddIf(expression = "f", result = false)
boolean m6() {
f = odd;
return true;
}
@EnsuresQualifierIf(expression = "this.f", qualifier = Odd.class, result = true)
boolean m7() {
f = odd;
return true;
}
}
static class Super3 {
String f, g;
@Odd String odd;
@EnsuresOddIf(expression = "f", result = true)
boolean m1() {
f = odd;
return true;
}
@EnsuresQualifierIf(expression = "f", qualifier = Odd.class, result = true)
boolean m2() {
f = odd;
return true;
}
@EnsuresOddIf(expression = "g", result = true)
boolean m3() {
g = odd;
return true;
}
@EnsuresQualifierIf(expression = "this.f", qualifier = Odd.class, result = true)
boolean m4() {
f = odd;
return true;
}
@EnsuresQualifierIf(expression = "this.f", qualifier = Odd.class, result = true)
boolean m5() {
f = odd;
return true;
}
}
}
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