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package bjc.dicelang.ast;
import bjc.utils.data.ITree;
import bjc.utils.funcdata.FunctionalList;
import bjc.utils.funcdata.IList;
import bjc.utils.funcdata.IMap;
import bjc.dicelang.ast.nodes.IDiceASTNode;
import bjc.dicelang.ast.optimization.IOptimizationPass;
/**
* Contains optimizations appliable to a dice AST
*
* @author ben
*
*/
public class DiceASTOptimizer {
private IList<IOptimizationPass> passes;
/**
* Create a new optimizer
*/
public DiceASTOptimizer() {
passes = new FunctionalList<>();
}
/**
* Add a pass to the list of optimization passes
*
* @param pass
* The pass to add
*/
public void addPass(IOptimizationPass pass) {
passes.add(pass);
}
/**
* Optimize the passed in tree
*
* @param ast
* The tree to optimize
* @param enviroment
* The enviroment for variable references
* @return The optimized tree
*/
public ITree<IDiceASTNode> optimizeTree(ITree<IDiceASTNode> ast,
IMap<String, ITree<IDiceASTNode>> enviroment) {
ITree<IDiceASTNode> optimizedTree = passes.reduceAux(ast,
(currentPass, currentTree) -> {
return currentTree.collapse(currentPass::optimizeLeaf,
(operator) -> {
return (nodes) -> {
return currentPass.optimizeOperator(
operator, nodes);
};
}, (tree) -> tree);
}, (tree) -> tree);
return optimizedTree;
}
}
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