From 899efcc5442804e312b6d98aa248ac3601da06d3 Mon Sep 17 00:00:00 2001
From: "Benjamin J. Culkin" <bjculkin@mix.wvu.edu>
Date: Mon, 4 Jun 2018 16:49:22 -0300
Subject: Update

---
 src/main/java/bjc/rgens/parser/RGrammarSet.java    |  2 +-
 src/main/java/bjc/rgens/parser/Rule.java           | 33 ++++++++++++++++++++--
 .../bjc/rgens/parser/elements/CaseElement.java     | 19 +++++++++++--
 3 files changed, 47 insertions(+), 7 deletions(-)

(limited to 'src/main/java/bjc')

diff --git a/src/main/java/bjc/rgens/parser/RGrammarSet.java b/src/main/java/bjc/rgens/parser/RGrammarSet.java
index d734074..4be4790 100755
--- a/src/main/java/bjc/rgens/parser/RGrammarSet.java
+++ b/src/main/java/bjc/rgens/parser/RGrammarSet.java
@@ -76,7 +76,7 @@ public class RGrammarSet {
 			exportFrom.put(export.name, grammarName);
 
 			if(DEBUG)
-				System.err.printf("\t\tDEBUG: %s exported from %s\n", export.name, grammarName);
+				System.err.printf("\t\tDEBUG: %s (%d cases) exported from %s\n", export.name, export.getCases().getSize(), grammarName);
 		}
 
 		/* Add exports to grammar. */
diff --git a/src/main/java/bjc/rgens/parser/Rule.java b/src/main/java/bjc/rgens/parser/Rule.java
index 4e43fd7..d0e5ec9 100755
--- a/src/main/java/bjc/rgens/parser/Rule.java
+++ b/src/main/java/bjc/rgens/parser/Rule.java
@@ -14,14 +14,30 @@ import java.util.Random;
  */
 public class Rule {
 	/** The name of this grammar rule. */
-	public final String name;
+	public String name;
 
 	/* The cases for this rule. */
 	private WeightedRandom<RuleCase> cases;
 
+	public static enum ProbType {
+		NORMAL,
+		DESCENDING,
+		BINOMIAL
+	}
+	
+	public ProbType prob;
+
+	public int     descentFactor;
+
+	public int target;
+	public int bound;
+	public int trials;
+
 	public int recurLimit = 5;
 	private int currentRecur;
 
+	private final static Random BASE = new Random();
+
 	/**
 	 * Create a new grammar rule.
 	 *
@@ -41,6 +57,8 @@ public class Rule {
 		name = ruleName;
 
 		cases = new WeightedRandom<>();
+
+		prob = ProbType.NORMAL;
 	}
 
 	/**
@@ -76,7 +94,7 @@ public class Rule {
 	 * 	A random case from this rule.
 	 */
 	public RuleCase getCase() {
-		return cases.generateValue();
+		return getCase(BASE);
 	}
 
 	/**
@@ -89,7 +107,16 @@ public class Rule {
 	 * 	A random case from this rule.
 	 */
 	public RuleCase getCase(Random rnd) {
-		return cases.generateValue(rnd);
+		switch(prob) {
+		case DESCENDING:
+			return cases.getDescent(descentFactor, rnd);
+		case BINOMIAL:
+			return cases.getBinomial(target, bound, trials, rnd);
+		case NORMAL:
+			return cases.generateValue(rnd);
+		default:
+			return cases.generateValue(rnd);
+		}
 	}
 
 	/**
diff --git a/src/main/java/bjc/rgens/parser/elements/CaseElement.java b/src/main/java/bjc/rgens/parser/elements/CaseElement.java
index f960c31..8f3a8d4 100755
--- a/src/main/java/bjc/rgens/parser/elements/CaseElement.java
+++ b/src/main/java/bjc/rgens/parser/elements/CaseElement.java
@@ -118,7 +118,6 @@ public abstract class CaseElement {
 			} else if (specialBody.matches("empty")) {
 				/* Literal blank, for empty cases. */
 				return new BlankCaseElement();
-			} else if (specialBody.contains("|")) {
 			} else {
 				throw new IllegalArgumentException(String.format("Unknown special case part '%s'", specialBody));
 			}
@@ -131,7 +130,15 @@ public abstract class CaseElement {
 
 				return new RangeCaseElement(firstNum, secondNum);
 			} else if(rawCase.contains("|")) {
-				return new InlineRuleCaseElement(specialBody.split("|"));
+				String[] elms = rawCase.split("\\|");
+
+				System.err.printf("\tTRACE: Split inline cases %s to ", rawCase);
+				for(String elm : elms) {
+					System.err.printf("%s, ", elm);
+				}
+				System.err.println();
+
+				return new InlineRuleCaseElement(elms);
 			} else if(csepart.contains("$")) {
 				/*
 				 * @NOTE
@@ -147,7 +154,13 @@ public abstract class CaseElement {
 			} else {
 				return new NormalRuleReference(csepart);
 			}
-		} else {
+		} else if(csepart.startsWith("%")) {
+			String rName = String.format("[%s]", csepart.substring(1));
+
+			System.err.printf("\tTRACE: short ref to %s (%s)\n", rName, csepart);
+
+			return new NormalRuleReference(rName);	
+		} else{
 			return new LiteralCaseElement(csepart);
 		}
 	}
-- 
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