package com.oracle.truffle.regex;
import com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.interop.InteropLibrary;
import com.oracle.truffle.api.interop.UnknownIdentifierException;
import com.oracle.truffle.api.library.ExportLibrary;
import com.oracle.truffle.api.library.ExportMessage;
import com.oracle.truffle.regex.util.TruffleReadOnlyKeysArray;
@ExportLibrary(InteropLibrary.class)
public abstract class AbstractConstantKeysObject extends AbstractRegexObject {
public abstract TruffleReadOnlyKeysArray getKeys();
public abstract Object readMemberImpl(String symbol) throws UnknownIdentifierException;
@ExportMessage
public boolean hasMembers() {
return true;
}
@ExportMessage
public Object getMembers(@SuppressWarnings("unused") boolean includeInternal) {
return getKeys();
}
@ExportMessage
public abstract static class IsMemberReadable {
@SuppressWarnings("unused")
@Specialization(guards = "symbol == cachedSymbol", limit = "8")
public static boolean cacheIdentity(AbstractConstantKeysObject receiver, String symbol,
@Cached("symbol") String cachedSymbol,
@Cached("isReadable(receiver, cachedSymbol)") boolean result) {
return result;
}
@SuppressWarnings("unused")
@Specialization(guards = "symbol.equals(cachedSymbol)", limit = "8", replaces = "cacheIdentity")
public static boolean cacheEquals(AbstractConstantKeysObject receiver, String symbol,
@Cached("symbol") String cachedSymbol,
@Cached("isReadable(receiver, cachedSymbol)") boolean result) {
return result;
}
@SuppressWarnings("unused")
@Specialization(replaces = "cacheEquals")
public static boolean isReadable(AbstractConstantKeysObject receiver, String symbol) {
return receiver.getKeys().contains(symbol);
}
}
@ExportMessage
public abstract static class ReadMember {
@Specialization(guards = "symbol == cachedSymbol", limit = "8")
public static Object readIdentity(AbstractConstantKeysObject receiver, @SuppressWarnings("unused") String symbol,
@Cached("symbol") String cachedSymbol) throws UnknownIdentifierException {
return read(receiver, cachedSymbol);
}
@Specialization(guards = "symbol.equals(cachedSymbol)", limit = "8", replaces = "readIdentity")
public static Object readEquals(AbstractConstantKeysObject receiver, @SuppressWarnings("unused") String symbol,
@Cached("symbol") String cachedSymbol) throws UnknownIdentifierException {
return read(receiver, cachedSymbol);
}
@Specialization(replaces = "readEquals")
public static Object read(AbstractConstantKeysObject receiver, String symbol) throws UnknownIdentifierException {
return receiver.readMemberImpl(symbol);
}
}
}