Java CompilerOptions.getSeverity方法代码示例

import org.eclipse.jdt.internal.compiler.impl.CompilerOptions; //导入方法依赖的package包/类
/**
 * Complain if assigned expression is cast, but not actually used as such, e.g. Object o = (List) object;
 */
public static void checkNeedForAssignedCast(BlockScope scope, TypeBinding expectedType, CastExpression rhs) {
	CompilerOptions compilerOptions = scope.compilerOptions();
	if (compilerOptions.getSeverity(CompilerOptions.UnnecessaryTypeCheck) == ProblemSeverities.Ignore) return;

	TypeBinding castedExpressionType = rhs.expression.resolvedType;
	//	int i = (byte) n; // cast still had side effect
	// double d = (float) n; // cast to float is unnecessary
	if (castedExpressionType == null || rhs.resolvedType.isBaseType()) return;
	//if (castedExpressionType.id == T_null) return; // tolerate null expression cast
	if (castedExpressionType.isCompatibleWith(expectedType, scope)) {
		if (compilerOptions.isAnnotationBasedNullAnalysisEnabled && compilerOptions.sourceLevel >= ClassFileConstants.JDK1_8) {
			// are null annotations compatible, too?
			if (NullAnnotationMatching.analyse(expectedType, castedExpressionType, -1).isAnyMismatch())
				return; // already reported unchecked cast (nullness), say no more.
		}
		scope.problemReporter().unnecessaryCast(rhs);
	}
}
 

import org.eclipse.jdt.internal.compiler.impl.CompilerOptions; //导入方法依赖的package包/类
void reportRawReferences() {
	CompilerOptions compilerOptions = this.type.scope.compilerOptions();
	if (compilerOptions.sourceLevel < ClassFileConstants.JDK1_5 // shouldn't whine at all
			|| compilerOptions.reportUnavoidableGenericTypeProblems) { // must have already whined 
		return;
	}
	/* Code below is only for a method that does not override/implement a super type method. If it were to,
	   it would have been handled in checkAgainstInheritedMethods.
	*/
	Object [] methodArray = this.currentMethods.valueTable;
	for (int s = methodArray.length; --s >= 0;) {
		if (methodArray[s] == null) continue;
		MethodBinding[] current = (MethodBinding[]) methodArray[s];
		for (int i = 0, length = current.length; i < length; i++) {
			MethodBinding currentMethod = current[i];
			if ((currentMethod.modifiers & (ExtraCompilerModifiers.AccImplementing | ExtraCompilerModifiers.AccOverriding)) == 0) {
				AbstractMethodDeclaration methodDecl = currentMethod.sourceMethod();
				if (methodDecl == null) return;
				TypeBinding [] parameterTypes = currentMethod.parameters;
				Argument[] arguments = methodDecl.arguments;
				for (int j = 0, size = currentMethod.parameters.length; j < size; j++) {
					TypeBinding parameterType = parameterTypes[j];
					Argument arg = arguments[j];
					if (parameterType.leafComponentType().isRawType()
						&& compilerOptions.getSeverity(CompilerOptions.RawTypeReference) != ProblemSeverities.Ignore
			      		&& (arg.type.bits & ASTNode.IgnoreRawTypeCheck) == 0) {
						methodDecl.scope.problemReporter().rawTypeReference(arg.type, parameterType);
			    	}
				}
				if (!methodDecl.isConstructor() && methodDecl instanceof MethodDeclaration) {
					TypeReference returnType = ((MethodDeclaration) methodDecl).returnType;
					TypeBinding methodType = currentMethod.returnType;
					if (returnType != null) {
						if (methodType.leafComponentType().isRawType()
								&& compilerOptions.getSeverity(CompilerOptions.RawTypeReference) != ProblemSeverities.Ignore
								&& (returnType.bits & ASTNode.IgnoreRawTypeCheck) == 0) {
							methodDecl.scope.problemReporter().rawTypeReference(returnType, methodType);
						}
					}
				}
			}
		}
	}
}