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/*
* System.Reflection-like API for access to .NET assemblies (DLL & EXE)
*/
package ch.epfl.lamp.compiler.msil;
import java.util.Iterator;
/**
* The common superclass of MemberInfo and ConstructorInfo
*
* @author Nikolay Mihaylov
* @version 1.0
*/
public abstract class MethodBase extends MemberInfo {
//##########################################################################
// public interface
private java.util.List /* GenericParamAndConstraints */ mVars = new java.util.LinkedList();
private GenericParamAndConstraints[] sortedMVars = null;
public void addMVar(GenericParamAndConstraints tvarAndConstraints) {
sortedMVars = null;
mVars.add(tvarAndConstraints);
}
public GenericParamAndConstraints[] getSortedMVars() {
if(sortedMVars == null) {
sortedMVars = new GenericParamAndConstraints[mVars.size()];
for (int i = 0; i < sortedMVars.length; i ++){
Iterator iter = mVars.iterator();
while(iter.hasNext()) {
GenericParamAndConstraints tvC = (GenericParamAndConstraints)iter.next();
if(tvC.Number == i) {
sortedMVars[i] = tvC;
}
}
}
}
return sortedMVars;
}
public final boolean IsGeneric() {
return mVars.size() > 0;
}
/** The attributes associated with this method/constructor. */
public final short Attributes;
/***/
public final short CallingConvention;
public abstract boolean IsConstructor();
public final boolean IsAbstract() {
return (Attributes & MethodAttributes.Abstract) != 0;
}
public final boolean IsFinal() {
return (Attributes& MethodAttributes.Final) != 0;
}
public final boolean IsVirtual() {
return (Attributes& MethodAttributes.Virtual) != 0;
}
public final boolean IsInstance() {
return !IsStatic() && !IsVirtual();
}
public final boolean IsStatic() {
return (Attributes & MethodAttributes.Static) != 0;
}
public final boolean IsHideBySig() {
return (Attributes & MethodAttributes.HideBySig) != 0;
}
public final boolean IsSpecialName() {
return (Attributes & MethodAttributes.SpecialName) != 0;
}
public final boolean IsPublic() {
return (Attributes & MethodAttributes.MemberAccessMask)
== MethodAttributes.Public;
}
public final boolean IsPrivate() {
return (Attributes & MethodAttributes.MemberAccessMask)
== MethodAttributes.Private;
}
public final boolean IsFamily() {
return (Attributes & MethodAttributes.MemberAccessMask)
== MethodAttributes.Family;
}
public final boolean IsAssembly() {
return (Attributes & MethodAttributes.MemberAccessMask)
== MethodAttributes.Assembly;
}
public final boolean IsFamilyOrAssembly() {
return (Attributes & MethodAttributes.MemberAccessMask)
== MethodAttributes.FamORAssem;
}
public final boolean IsFamilyAndAssembly() {
return (Attributes & MethodAttributes.MemberAccessMask)
== MethodAttributes.FamANDAssem;
}
public boolean HasPtrParamOrRetType() {
// the override in MethodInfo checks the return type
ParameterInfo[] ps = GetParameters();
for (int i = 0; i < ps.length; i++) {
Type pT = ps[i].ParameterType;
if(pT.IsPointer()) {
// Type.mkPtr creates a msil.Type for a pointer type
return true;
}
if(pT.IsByRef() && !pT.GetElementType().CanBeTakenAddressOf()) {
/* TODO Cases where GenMSIL (so far) con't emit good bytecode:
the type being taken address of IsArray(), IsGeneric(), or IsTMVarUsage.
For example, System.Enum declares
public static bool TryParse<TEnum>(string value, out TEnum result) where TEnum : struct, new();
*/
return true;
}
}
return false;
}
/** Returns the parameters of the method/constructor. */
public ParameterInfo[] GetParameters() {
return (ParameterInfo[]) params.clone();
}
public int GetMethodImplementationFlags() { return implAttributes; }
//##########################################################################
/** Method parameters. */
protected ParameterInfo[] params;
protected short implAttributes;
protected MethodBase(String name, Type declType, int attrs, Type[] paramTypes)
{
this(name, declType, attrs);
assert paramTypes != null;
params = new ParameterInfo[paramTypes.length];
for (int i = 0; i < params.length; i++)
params[i] = new ParameterInfo(null, paramTypes[i], 0, i);
}
protected MethodBase(String name, Type declType, int attrs,
ParameterInfo[] params)
{
this(name, declType, attrs);
this.params = params;
}
/**
*/
private MethodBase(String name, Type declType, int attrs) {
super(name, declType);
Attributes = (short) attrs;
if (IsConstructor()) {
attrs |= MethodAttributes.SpecialName;
attrs |= MethodAttributes.RTSpecialName;
}
CallingConvention = (short) (CallingConventions.Standard
| (IsStatic() ? (short)0 : CallingConventions.HasThis));
}
//##########################################################################
// internal methods
protected String params2String() {
StringBuffer s = new StringBuffer("(");
for (int i = 0; i < params.length; i++) {
if (i > 0) s.append(", ");
s.append(params[i].ParameterType);
}
s.append(")");
return s.toString();
}
//##########################################################################
} // class MethodBase
|
