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// Test case for Issue 1096:
// https://github.com/typetools/checker-framework/issues/1027
import org.checkerframework.checker.initialization.qual.UnknownInitialization;
import org.checkerframework.checker.nullness.qual.Nullable;
import org.checkerframework.checker.nullness.qual.RequiresNonNull;
class PreCond {
Object f;
@Nullable Object g;
PreCond() {
f = new Object();
early();
g = new Object();
doNullable();
}
void earlyBad(@UnknownInitialization PreCond this) {
// :: error: (dereference.of.nullable)
f.toString();
}
@RequiresNonNull("this.f")
void early(@UnknownInitialization PreCond this) {
f.toString();
}
@RequiresNonNull("this.g")
void doNullable(@UnknownInitialization PreCond this) {
g.toString();
}
void foo(@UnknownInitialization PreCond this) {
// Receiver is not fully initialized, so raise error
// :: error: (contracts.precondition.not.satisfied)
early();
}
void bar() {
// Receiver is initialized, so non-null field f is definitely non-null
early();
// Nullable fields stay nullable
// :: error: (contracts.precondition.not.satisfied)
doNullable();
}
}
class User {
void foo(@UnknownInitialization PreCond pc) {
// Receiver is not fully initialized, so raise error
// :: error: (contracts.precondition.not.satisfied)
pc.early();
}
void bar(PreCond pc) {
// Receiver is initialized, so non-null field f is definitely non-null
pc.early();
// Nullable fields stay nullable
// :: error: (contracts.precondition.not.satisfied)
pc.doNullable();
}
}
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