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8222744: add support for generating method handles from a variable symbol

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Reviewed-by: mcimadamore
This commit is contained in:
Vicente Romero 2019-05-01 12:41:26 -04:00
parent fee481d5a2
commit f9bbbb6e27
1 changed files with 25 additions and 9 deletions
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34
src/jdk.compiler/share/classes/com/sun/tools/javac/code/Symbol.java
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@ -1559,6 +1559,10 @@ public abstract class Symbol extends AnnoConstruct implements PoolConstant, Elem
return ClassFile.CONSTANT_Fieldref;
}
public MethodHandleSymbol asMethodHandle(boolean getter) {
return new MethodHandleSymbol(this, getter);
}
/** Clone this symbol with new owner.
*/
public VarSymbol clone(Symbol newOwner) {
@ -2110,27 +2114,39 @@ public abstract class Symbol extends AnnoConstruct implements PoolConstant, Elem
public static class MethodHandleSymbol extends MethodSymbol implements LoadableConstant {
private Symbol refSym;
private boolean getter;
public MethodHandleSymbol(Symbol msym) {
this(msym, false);
}
public MethodHandleSymbol(Symbol msym, boolean getter) {
super(msym.flags_field, msym.name, msym.type, msym.owner);
this.refSym = msym;
this.getter = getter;
}
/**
* Returns the kind associated with this method handle.
*/
public int referenceKind() {
if (refSym.isConstructor()) {
return ClassFile.REF_newInvokeSpecial;
if (refSym.kind == VAR) {
return getter ?
refSym.isStatic() ? ClassFile.REF_getStatic : ClassFile.REF_getField :
refSym.isStatic() ? ClassFile.REF_putStatic : ClassFile.REF_putField;
} else {
if (refSym.isStatic()) {
return ClassFile.REF_invokeStatic;
} else if ((refSym.flags() & PRIVATE) != 0) {
return ClassFile.REF_invokeSpecial;
} else if (refSym.enclClass().isInterface()) {
return ClassFile.REF_invokeInterface;
if (refSym.isConstructor()) {
return ClassFile.REF_newInvokeSpecial;
} else {
return ClassFile.REF_invokeVirtual;
if (refSym.isStatic()) {
return ClassFile.REF_invokeStatic;
} else if ((refSym.flags() & PRIVATE) != 0) {
return ClassFile.REF_invokeSpecial;
} else if (refSym.enclClass().isInterface()) {
return ClassFile.REF_invokeInterface;
} else {
return ClassFile.REF_invokeVirtual;
}
}
}
}