@NotNull
private static DfaMemoryStateImpl createClosureState(@NotNull DfaMemoryState memState) {
DfaMemoryStateImpl copy = (DfaMemoryStateImpl) memState.createCopy();
copy.flushFields();
Set<DfaVariableValue> vars = new HashSet<DfaVariableValue>(copy.getVariableStates().keySet());
for (DfaVariableValue value : vars) {
copy.flushDependencies(value);
}
copy.emptyStack();
return copy;
}
@Nullable
private static DfaInstructionState[] handleConstantComparison(
BinopInstruction instruction,
DataFlowRunner runner,
DfaMemoryState memState,
DfaValue dfaRight,
DfaValue dfaLeft,
IElementType opSign) {
if (dfaRight instanceof DfaConstValue && dfaLeft instanceof DfaVariableValue) {
Object value = ((DfaConstValue) dfaRight).getValue();
if (value instanceof Number) {
DfaInstructionState[] result =
checkComparingWithConstant(
instruction,
runner,
memState,
(DfaVariableValue) dfaLeft,
opSign,
((Number) value).doubleValue());
if (result != null) {
return result;
}
}
}
if (dfaRight instanceof DfaVariableValue && dfaLeft instanceof DfaConstValue) {
return handleConstantComparison(
instruction,
runner,
memState,
dfaLeft,
dfaRight,
DfaRelationValue.getSymmetricOperation(opSign));
}
if (EQEQ != opSign && NE != opSign) {
return null;
}
if (dfaLeft instanceof DfaConstValue && dfaRight instanceof DfaConstValue
|| dfaLeft == runner.getFactory().getConstFactory().getContractFail()
|| dfaRight == runner.getFactory().getConstFactory().getContractFail()) {
boolean negated =
(NE == opSign)
^ (DfaMemoryStateImpl.isNaN(dfaLeft) || DfaMemoryStateImpl.isNaN(dfaRight));
if (dfaLeft == dfaRight ^ negated) {
return alwaysTrue(instruction, runner, memState);
}
return alwaysFalse(instruction, runner, memState);
}
return null;
}