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authorbculkin2442 <bjculkin@mix.wvu.edu>2016-03-28 08:47:45 -0400
committerbculkin2442 <bjculkin@mix.wvu.edu>2016-03-28 08:47:45 -0400
commit260cc55c485980cd31193300962a88f1de8d62f7 (patch)
treec08c646056d04352e18bb80e07b9a35765c8946f /BJC-Utils2/src/main/java/bjc/utils/dice/ast/DiceASTFlattener.java
parent4d904a55a1b5fe6506f81c2c292c07dfe839029f (diff)
Moved dice things to seperate project
Diffstat (limited to 'BJC-Utils2/src/main/java/bjc/utils/dice/ast/DiceASTFlattener.java')
-rw-r--r--BJC-Utils2/src/main/java/bjc/utils/dice/ast/DiceASTFlattener.java114
1 files changed, 0 insertions, 114 deletions
diff --git a/BJC-Utils2/src/main/java/bjc/utils/dice/ast/DiceASTFlattener.java b/BJC-Utils2/src/main/java/bjc/utils/dice/ast/DiceASTFlattener.java
deleted file mode 100644
index 70465a5..0000000
--- a/BJC-Utils2/src/main/java/bjc/utils/dice/ast/DiceASTFlattener.java
+++ /dev/null
@@ -1,114 +0,0 @@
-package bjc.utils.dice.ast;
-
-import java.util.HashMap;
-import java.util.Map;
-import java.util.function.BinaryOperator;
-
-import org.apache.commons.lang3.StringUtils;
-
-import bjc.utils.dice.BindingDiceExpression;
-import bjc.utils.dice.ComplexDice;
-import bjc.utils.dice.CompoundDice;
-import bjc.utils.dice.CompoundDiceExpression;
-import bjc.utils.dice.DiceExpressionType;
-import bjc.utils.dice.IDiceExpression;
-import bjc.utils.dice.ReferenceDiceExpression;
-import bjc.utils.dice.ScalarDie;
-import bjc.utils.parserutils.AST;
-
-/**
- * Flatten an {@link AST} of {@link IDiceASTNode} into a
- * {@link IDiceExpression}
- *
- * @author ben
- *
- */
-public class DiceASTFlattener {
- /**
- * Build the operations to use for tree flattening
- *
- * @param env
- * The enviroment the tree will be flattened against
- * @return The operations needed for tree flattening
- */
- private static Map<IDiceASTNode, BinaryOperator<IDiceExpression>>
- buildOperations(Map<String, IDiceExpression> env) {
- Map<IDiceASTNode, BinaryOperator<IDiceExpression>> opCollapsers =
- new HashMap<>();
- opCollapsers.put(OperatorDiceNode.ADD, (left, right) -> {
- return new CompoundDiceExpression(right, left,
- DiceExpressionType.ADD);
- });
- opCollapsers.put(OperatorDiceNode.SUBTRACT, (left, right) -> {
- return new CompoundDiceExpression(right, left,
- DiceExpressionType.SUBTRACT);
- });
- opCollapsers.put(OperatorDiceNode.MULTIPLY, (left, right) -> {
- return new CompoundDiceExpression(right, left,
- DiceExpressionType.MULTIPLY);
- });
- opCollapsers.put(OperatorDiceNode.DIVIDE, (left, right) -> {
- return new CompoundDiceExpression(right, left,
- DiceExpressionType.DIVIDE);
- });
- opCollapsers.put(OperatorDiceNode.ASSIGN, (left, right) -> {
- return new BindingDiceExpression(left, right, env);
- });
- opCollapsers.put(OperatorDiceNode.COMPOUND, (left, right) -> {
- return new CompoundDice(left, right);
- });
- opCollapsers.put(OperatorDiceNode.GROUP, (left, right) -> {
- return new ComplexDice(left, right);
- });
-
- return opCollapsers;
- }
-
- /**
- * Create a dice expression from a literal token
- *
- * @param tok
- * The token to convert to an expression
- * @return The dice expression represented by the token
- */
- private static IDiceExpression expFromLiteral(LiteralDiceNode tok) {
- String data = tok.getData();
-
- if (StringUtils.countMatches(data, 'c') == 1
- && !data.equalsIgnoreCase("c")) {
- String[] strangs = data.split("c");
-
- return new CompoundDice(ComplexDice.fromString(strangs[0]),
- ComplexDice.fromString(strangs[1]));
- } else if (StringUtils.countMatches(data, 'd') == 1
- && !data.equalsIgnoreCase("d")) {
- return ComplexDice.fromString(data);
- } else {
- return new ScalarDie(Integer.parseInt(data));
- }
- }
-
- /**
- * Flatten a AST into a dice expression
- *
- * @param ast
- * The AST to flatten
- * @param env
- * The enviroment to flatten against
- * @return The AST, flattened into a dice expression
- */
- public static IDiceExpression flatten(AST<IDiceASTNode> ast,
- Map<String, IDiceExpression> env) {
- Map<IDiceASTNode, BinaryOperator<IDiceExpression>> opCollapsers =
- buildOperations(env);
-
- return ast.collapse((nod) -> {
- if (nod instanceof LiteralDiceNode) {
- return expFromLiteral((LiteralDiceNode) nod);
- } else {
- return new ReferenceDiceExpression(
- ((VariableDiceNode) nod).getVariable(), env);
- }
- } , opCollapsers::get, (r) -> r);
- }
-}