From 9ce39956fa1702f157c347dc4b8807d9b5dd2185 Mon Sep 17 00:00:00 2001
From: bculkin2442 <bjculkin@mix.wvu.edu>
Date: Mon, 18 Apr 2016 08:34:32 -0400
Subject: Reimplemented basic optimization.

---
 .../java/bjc/dicelang/ast/DiceASTOptimizer.java    | 57 ++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 dice-lang/src/main/java/bjc/dicelang/ast/DiceASTOptimizer.java

(limited to 'dice-lang/src/main/java/bjc/dicelang/ast/DiceASTOptimizer.java')

diff --git a/dice-lang/src/main/java/bjc/dicelang/ast/DiceASTOptimizer.java b/dice-lang/src/main/java/bjc/dicelang/ast/DiceASTOptimizer.java
new file mode 100644
index 0000000..00ac871
--- /dev/null
+++ b/dice-lang/src/main/java/bjc/dicelang/ast/DiceASTOptimizer.java
@@ -0,0 +1,57 @@
+package bjc.dicelang.ast;
+
+import bjc.dicelang.ast.nodes.IDiceASTNode;
+import bjc.dicelang.ast.optimization.IOptimizationPass;
+import bjc.utils.funcdata.FunctionalList;
+import bjc.utils.funcdata.IFunctionalList;
+import bjc.utils.funcdata.IFunctionalMap;
+import bjc.utils.funcdata.ITree;
+
+/**
+ * Contains optimizations appliable to a dice AST
+ * 
+ * @author ben
+ *
+ */
+public class DiceASTOptimizer {
+	private IFunctionalList<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,
+			IFunctionalMap<String, ITree<IDiceASTNode>> enviroment) {
+		return passes.reduceAux(ast, (currentPass, currentTree) -> {
+			return currentTree.collapse(currentPass::optimizeLeaf,
+					(operator) -> {
+						return (nodes) -> {
+							return currentPass.optimizeOperator(operator,
+									nodes);
+						};
+					}, (tree) -> tree);
+		}, (tree) -> tree);
+	}
+}
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