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package com.oracle.truffle.llvm.runtime.nodes.func;

import com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.frame.VirtualFrame;
import com.oracle.truffle.llvm.runtime.LLVMFunction;
import com.oracle.truffle.llvm.runtime.LLVMFunctionCode;
import com.oracle.truffle.llvm.runtime.nodes.api.LLVMExpressionNode;
import com.oracle.truffle.llvm.runtime.nodes.others.LLVMAccessSymbolNodeGen;

public abstract class LLVMLookupDispatchTargetSymbolNode extends LLVMExpressionNode {

    protected final LLVMFunction function;

    protected LLVMLookupDispatchTargetSymbolNode(LLVMFunction function) {
        this.function = function;
    }

    @Specialization(guards = {"code != null", "code.isLLVMIRFunction() || code.isIntrinsicFunctionSlowPath()"}, assumptions = "function.getFixedCodeAssumption()")
    protected LLVMFunctionCode getCode(
                    @Cached("function.getFixedCode()") LLVMFunctionCode code) {
        return code;
    }

    @Specialization(replaces = "getCode")
    protected Object getGeneric(VirtualFrame frame,
                    @Cached("createLookupNode()") LLVMLookupDispatchTargetNode node) {
        return node.executeGeneric(frame);
    }

    protected LLVMLookupDispatchTargetNode createLookupNode() {
        return LLVMLookupDispatchTargetNodeGen.create(LLVMAccessSymbolNodeGen.create(function));
    }
}