Examples with SLBuiltinNode com.oracle.truffle.sl.builtins.SLBuiltinNode used on opensource projects

Example 1 with SLBuiltinNode

use of com.oracle.truffle.sl.builtins.SLBuiltinNode in project graal by oracle.

the class SLContext method installBuiltin.

public void installBuiltin(NodeFactory<? extends SLBuiltinNode> factory) {
    /*
         * The builtin node factory is a class that is automatically generated by the Truffle DSL.
         * The signature returned by the factory reflects the signature of the @Specialization
         *
         * methods in the builtin classes.
         */
    int argumentCount = factory.getExecutionSignature().size();
    SLExpressionNode[] argumentNodes = new SLExpressionNode[argumentCount];
    /*
         * Builtin functions are like normal functions, i.e., the arguments are passed in as an
         * Object[] array encapsulated in SLArguments. A SLReadArgumentNode extracts a parameter
         * from this array.
         */
    for (int i = 0; i < argumentCount; i++) {
        argumentNodes[i] = new SLReadArgumentNode(i);
    }
    /* Instantiate the builtin node. This node performs the actual functionality. */
    SLBuiltinNode builtinBodyNode = factory.createNode((Object) argumentNodes);
    builtinBodyNode.addRootTag();
    /* The name of the builtin function is specified via an annotation on the node class. */
    String name = lookupNodeInfo(builtinBodyNode.getClass()).shortName();
    builtinBodyNode.setUnavailableSourceSection();
    /* Wrap the builtin in a RootNode. Truffle requires all AST to start with a RootNode. */
    SLRootNode rootNode = new SLRootNode(language, new FrameDescriptor(), builtinBodyNode, BUILTIN_SOURCE.createUnavailableSection(), name);
    /* Register the builtin function in our function registry. */
    getFunctionRegistry().register(name, Truffle.getRuntime().createCallTarget(rootNode));
}