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package com.oracle.truffle.llvm.runtime.interop.export;

import com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.GenerateUncached;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.interop.UnsupportedMessageException;
import com.oracle.truffle.llvm.runtime.CommonNodeFactory;
import com.oracle.truffle.llvm.runtime.interop.access.LLVMInteropType;
import com.oracle.truffle.llvm.runtime.interop.access.LLVMInteropType.ValueKind;
import com.oracle.truffle.llvm.runtime.interop.convert.ForeignToLLVM;
import com.oracle.truffle.llvm.runtime.nodes.api.LLVMNode;
import com.oracle.truffle.llvm.runtime.nodes.memory.store.LLVMOffsetStoreNode;
import com.oracle.truffle.llvm.runtime.pointer.LLVMPointer;

@GenerateUncached
public abstract class LLVMForeignWriteNode extends LLVMNode {

    static final int VALUE_KIND_COUNT = ValueKind.values().length;

    public abstract void execute(LLVMPointer ptr, LLVMInteropType type, Object value) throws UnsupportedMessageException;

    @Specialization(guards = "type.kind == cachedKind", limit = "VALUE_KIND_COUNT")
    static void doValue(LLVMPointer ptr, LLVMInteropType.Value type, Object value,
                    @Cached(value = "type.kind", allowUncached = true) @SuppressWarnings("unused") LLVMInteropType.ValueKind cachedKind,
                    @Cached(parameters = "cachedKind") LLVMOffsetStoreNode store,
                    @Cached("createForeignToLLVM(type)") ForeignToLLVM toLLVM) {
        Object llvmValue = toLLVM.executeWithForeignToLLVMType(value, type.baseType, cachedKind.foreignToLLVMType);
        store.executeWithTargetGeneric(ptr, 0, llvmValue);
    }

    
Params:
ptr – 
type – 
value – 
See Also:
execute(LLVMPointer, LLVMInteropType, Object)/**
     * @param ptr
     * @param type
     * @param value
     * @see #execute(LLVMPointer, LLVMInteropType, Object)
     */
    @Specialization
    static void doStructured(LLVMPointer ptr, LLVMInteropType.Structured type, Object value) throws UnsupportedMessageException {
        throw UnsupportedMessageException.create();
    }

    protected ForeignToLLVM createForeignToLLVM(LLVMInteropType.Value type) {
        return CommonNodeFactory.createForeignToLLVM(type);
    }
}