117 lines
2.9 KiB
Java
117 lines
2.9 KiB
Java
package ch.usi.inf.sp.callgraph;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.Objects;
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import java.util.stream.Collectors;
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import java.util.stream.Stream;
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import org.objectweb.asm.Opcodes;
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/**
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* A method declared in a class or interface. May be abstract.
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* A method can contain several CallSites
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* (information about CallSites may or may not be available,
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* e.g. usually CallSites are added to Method objects only by the CallGraphBuilder).
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*
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* @author Matthias.Hauswirth@usi.ch
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*/
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public final class Method {
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private final String declaringClassName;
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private final String name;
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private final String descriptor;
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private final int modifiers;
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private final ArrayList<CallSite> callSites;
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/**
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*
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* @param name The name of the method, "<init>" for constructor or instance initializer, "<clinit>" for static initializer.
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* @param descriptor The descriptor showing argument and return types
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* (e.g. "(IJ)V" means the method takes two arguments, an int and a long, and its return type is void)
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* @param modifiers
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*/
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public Method(final String declaringClassName, final String name, final String descriptor, final int modifiers) {
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this.declaringClassName = declaringClassName;
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this.name = name;
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this.descriptor = descriptor;
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this.modifiers = modifiers;
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this.callSites = new ArrayList<CallSite>();
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}
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/**
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* Get the internal name of the class declaring this method.
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*/
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public String getDeclaringClassName() {
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return declaringClassName;
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}
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public String getName() {
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return name;
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}
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public String getDescriptor() {
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return descriptor;
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}
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/**
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* Get the modifiers (access flags, ...) as an int, as taken from ASM.
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*/
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public int getModifiers() {
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return modifiers;
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}
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public boolean isStatic() {
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return (Opcodes.ACC_STATIC & modifiers) != 0;
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}
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public boolean isPublic() {
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return (Opcodes.ACC_PUBLIC & modifiers) != 0;
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}
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public boolean isProtected() {
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return (Opcodes.ACC_PROTECTED & modifiers) != 0;
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}
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public boolean isPrivate() {
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return (Opcodes.ACC_PRIVATE & modifiers) != 0;
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}
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public boolean isAbstract() {
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return (Opcodes.ACC_ABSTRACT & modifiers) !=0;
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}
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public boolean isFinal() {
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return (Opcodes.ACC_FINAL & modifiers) !=0;
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}
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public String getVerboseModifiers() {
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final String visibility = isPublic() ? "public" :
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isProtected() ? "protected" :
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isPrivate() ? "private" : null;
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final String kind = isStatic() ? "static" : isAbstract() ? "abstract" : null;
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return Stream.of(visibility, kind).filter(Objects::nonNull).collect(Collectors.joining(" "));
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}
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/**
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* Add a CallSite to this method.
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* Usually done only when really needed (e.g. by CallGraphBuilder).
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*/
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public void addCallSite(final CallSite callSite) {
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callSites.add(callSite);
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}
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/**
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* Get all CallSites in this method
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* (will return an empty collection if no CallSites were added).
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*/
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public Collection<CallSite> getCallSites() {
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return callSites;
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}
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}
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