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package com.oracle.graal.python.builtins.modules.io;

import static com.oracle.graal.python.builtins.PythonBuiltinClassType.PBufferedWriter;
import static com.oracle.graal.python.nodes.SpecialMethodNames.J___INIT__;

import java.util.List;

import com.oracle.graal.python.builtins.Builtin;
import com.oracle.graal.python.builtins.CoreFunctions;
import com.oracle.graal.python.builtins.modules.io.BufferedWriterBuiltinsFactory.BufferedWriterInitNodeGen;
import com.oracle.graal.python.builtins.modules.io.IOBaseBuiltins.CheckWritableNode;
import com.oracle.graal.python.nodes.function.PythonBuiltinBaseNode;
import com.oracle.graal.python.nodes.object.GetClassNode;
import com.oracle.graal.python.runtime.PosixSupportLibrary;
import com.oracle.graal.python.runtime.object.PythonObjectFactory;
import com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.GenerateNodeFactory;
import com.oracle.truffle.api.dsl.NodeFactory;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.frame.VirtualFrame;
import com.oracle.truffle.api.nodes.Node;

@CoreFunctions(extendClasses = PBufferedWriter)
public final class BufferedWriterBuiltins extends AbstractBufferedIOBuiltins {
    @Override
    protected List<? extends NodeFactory<? extends PythonBuiltinBaseNode>> getNodeFactories() {
        return BufferedWriterBuiltinsFactory.getFactories();
    }

    public abstract static class BufferedWriterInit extends Node {

        public abstract void execute(VirtualFrame frame, PBuffered self, Object raw, int bufferSize, PythonObjectFactory factory);

        @Specialization
        static void doInit(VirtualFrame frame, PBuffered self, Object raw, int bufferSize, PythonObjectFactory factory,
                        @Cached CheckWritableNode checkWritableNode,
                        @Cached BufferedInitNode bufferedInitNode,
                        @Cached GetClassNode getSelfClass,
                        @Cached GetClassNode getRawClass) {
            self.setOK(false);
            self.setDetached(false);
            checkWritableNode.execute(frame, raw);
            self.setRaw(raw, isFileIO(self, raw, PBufferedWriter, getSelfClass, getRawClass));
            bufferedInitNode.execute(frame, self, bufferSize, factory);
            self.resetWrite();
            self.setPos(0);
            self.setOK(true);
        }

        public static void internalInit(PBuffered self, PFileIO raw, int bufferSize, PythonObjectFactory factory,
                        Object posixSupport,
                        PosixSupportLibrary posixLib) {
            self.setDetached(false);
            self.setRaw(raw, true);
            BufferedInitNode.internalInit(self, bufferSize, factory, posixSupport, posixLib);
            self.resetWrite();
            self.setPos(0);
            self.setOK(true);

        }
    }

    // BufferedWriter(raw[, buffer_size=DEFAULT_BUFFER_SIZE])
    @Builtin(name = J___INIT__, minNumOfPositionalArgs = 2, parameterNames = {"self", "raw", "buffer_size"}, raiseErrorName = "BufferedWriter")
    @GenerateNodeFactory
    public abstract static class InitNode extends BaseInitNode {

        @Child private BufferedWriterInit init = BufferedWriterInitNodeGen.create();

        @Override
        protected final void init(VirtualFrame frame, PBuffered self, Object raw, int bufferSize) {
            init.execute(frame, self, raw, bufferSize, factory());
        }
    }
}
