/**
* Feed null information from argument annotations into the analysis and mark arguments as
* assigned.
*/
static void analyseArguments(
LookupEnvironment environment,
FlowInfo flowInfo,
Argument[] methodArguments,
MethodBinding methodBinding) {
if (methodArguments != null) {
boolean usesNullTypeAnnotations = environment.usesNullTypeAnnotations();
int length = Math.min(methodBinding.parameters.length, methodArguments.length);
for (int i = 0; i < length; i++) {
if (usesNullTypeAnnotations) {
// leverage null type annotations:
long tagBits = methodBinding.parameters[i].tagBits & TagBits.AnnotationNullMASK;
if (tagBits == TagBits.AnnotationNonNull)
flowInfo.markAsDefinitelyNonNull(methodArguments[i].binding);
else if (tagBits == TagBits.AnnotationNullable)
flowInfo.markPotentiallyNullBit(methodArguments[i].binding);
} else {
if (methodBinding.parameterNonNullness != null) {
// leverage null-info from parameter annotations:
Boolean nonNullNess = methodBinding.parameterNonNullness[i];
if (nonNullNess != null) {
if (nonNullNess.booleanValue())
flowInfo.markAsDefinitelyNonNull(methodArguments[i].binding);
else flowInfo.markPotentiallyNullBit(methodArguments[i].binding);
}
}
}
// tag parameters as being set:
flowInfo.markAsDefinitelyAssigned(methodArguments[i].binding);
}
}
}
/**
* Feed null information from argument annotations into the analysis and mark arguments as
* assigned.
*/
void analyseArguments(FlowInfo flowInfo) {
if (this.arguments != null) {
for (int i = 0, count = this.arguments.length; i < count; i++) {
if (this.binding.parameterNonNullness != null) {
// leverage null-info from parameter annotations:
Boolean nonNullNess = this.binding.parameterNonNullness[i];
if (nonNullNess != null) {
if (nonNullNess.booleanValue())
flowInfo.markAsDefinitelyNonNull(this.arguments[i].binding);
else flowInfo.markPotentiallyNullBit(this.arguments[i].binding);
}
}
// tag parameters as being set:
flowInfo.markAsDefinitelyAssigned(this.arguments[i].binding);
}
}
}
/**
* When a method is accessed via SourceTypeBinding.resolveTypesFor(MethodBinding) we create the
* argument binding and resolve annotations in order to compute null annotation tagbits.
*/
public void createArgumentBindings() {
if (this.arguments != null && this.binding != null) {
for (int i = 0, length = this.arguments.length; i < length; i++) {
Argument argument = this.arguments[i];
argument.createBinding(this.scope, this.binding.parameters[i]);
// createBinding() has resolved annotations, now transfer nullness info from the argument to
// the method:
if ((argument.binding.tagBits & (TagBits.AnnotationNonNull | TagBits.AnnotationNullable))
!= 0) {
if (this.binding.parameterNonNullness == null)
this.binding.parameterNonNullness = new Boolean[this.arguments.length];
this.binding.parameterNonNullness[i] =
Boolean.valueOf((argument.binding.tagBits & TagBits.AnnotationNonNull) != 0);
}
}
}
}
// version for invocation from LambdaExpression:
static void createArgumentBindings(
Argument[] arguments, MethodBinding binding, MethodScope scope) {
boolean useTypeAnnotations = scope.environment().usesNullTypeAnnotations();
if (arguments != null && binding != null) {
for (int i = 0, length = arguments.length; i < length; i++) {
Argument argument = arguments[i];
binding.parameters[i] = argument.createBinding(scope, binding.parameters[i]);
if (useTypeAnnotations) continue; // no business with SE7 null annotations in the 1.8 case.
// createBinding() has resolved annotations, now transfer nullness info from the argument to
// the method:
long argTypeTagBits = (argument.binding.tagBits & TagBits.AnnotationNullMASK);
if (argTypeTagBits != 0) {
if (binding.parameterNonNullness == null) {
binding.parameterNonNullness = new Boolean[arguments.length];
binding.tagBits |= TagBits.IsNullnessKnown;
}
binding.parameterNonNullness[i] =
Boolean.valueOf(argTypeTagBits == TagBits.AnnotationNonNull);
}
}
}
}