From 9b9ce0c3123d70b9e839084aade4f37eb08e328d Mon Sep 17 00:00:00 2001
From: "Benjamin J. Culkin" <bjculkin@mix.wvu.edu>
Date: Mon, 4 Jun 2018 21:13:50 -0300
Subject: Rule variables pt. 1

Add the capability to store regular/exhaustible rule variables
---
 src/main/java/bjc/rgens/parser/GenerationState.java  | 10 ++++++----
 src/main/java/bjc/rgens/parser/RGrammar.java         |  6 +++---
 src/main/java/bjc/rgens/parser/Rule.java             | 20 ++++++++++++++++++++
 .../bjc/rgens/parser/elements/RuleCaseElement.java   |  2 +-
 4 files changed, 30 insertions(+), 8 deletions(-)

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

diff --git a/src/main/java/bjc/rgens/parser/GenerationState.java b/src/main/java/bjc/rgens/parser/GenerationState.java
index 7ab55bf..78fce96 100644
--- a/src/main/java/bjc/rgens/parser/GenerationState.java
+++ b/src/main/java/bjc/rgens/parser/GenerationState.java
@@ -33,6 +33,7 @@ public class GenerationState {
 	 */
 	/** The current set of variables. */
 	public Map<String, String> vars;
+	public Map<String, Rule> rlVars;
 
 	/**
 	 * Create a new generation state.
@@ -46,10 +47,11 @@ public class GenerationState {
 	 * @param vs
 	 *            The variables to use.
 	 */
-	public GenerationState(StringBuilder cont, Random rand, Map<String, String> vs, RGrammar gram) {
+	public GenerationState(StringBuilder cont, Random rand, Map<String, String> vs, Map<String, Rule> rvs, RGrammar gram) {
 		contents = cont;
-		rnd = rand;
-		vars = vs;
+		rnd      = rand;
+		vars     = vs;
+		rlVars   = rvs;
 
 		this.gram = gram;
 	
@@ -66,6 +68,6 @@ public class GenerationState {
 	}
 
 	public GenerationState newBuf() {
-		return new GenerationState(new StringBuilder(), rnd, vars, gram);
+		return new GenerationState(new StringBuilder(), rnd, vars, rlVars, gram);
 	}
 }
diff --git a/src/main/java/bjc/rgens/parser/RGrammar.java b/src/main/java/bjc/rgens/parser/RGrammar.java
index bd289e9..6b17173 100755
--- a/src/main/java/bjc/rgens/parser/RGrammar.java
+++ b/src/main/java/bjc/rgens/parser/RGrammar.java
@@ -108,7 +108,7 @@ public class RGrammar {
 	 * @return A possible string from the grammar.
 	 */
 	public String generate(String startRule) {
-		return generate(startRule, new Random(), new HashMap<>());
+		return generate(startRule, new Random(), new HashMap<>(), new HashMap<>());
 	}
 
 	/**
@@ -126,8 +126,8 @@ public class RGrammar {
 	 *
 	 * @return A possible string from the grammar.
 	 */
-	public String generate(String startRule, Random rnd, Map<String, String> vars) {
-		return generate(startRule, new GenerationState(new StringBuilder(), rnd, vars, this));
+	public String generate(String startRule, Random rnd, Map<String, String> vars, Map<String, Rule> rlVars) {
+		return generate(startRule, new GenerationState(new StringBuilder(), rnd, vars, rlVars, this));
 	}
 
 	/**
diff --git a/src/main/java/bjc/rgens/parser/Rule.java b/src/main/java/bjc/rgens/parser/Rule.java
index 3e7d884..b5a87c3 100755
--- a/src/main/java/bjc/rgens/parser/Rule.java
+++ b/src/main/java/bjc/rgens/parser/Rule.java
@@ -199,4 +199,24 @@ public class Rule {
 	public void endRecur() {
 		if(currentRecur > 0) currentRecur -= 1;
 	}
+
+	public Rule exhaust() {
+		Rule rl = new Rule(name);
+
+		rl.cases = cases.exhaustible();
+
+		rl.prob = prob;
+
+		rl.descentFactor = descentFactor;
+
+		rl.target = target;
+		rl.bound  = bound;
+		rl.trials = trials;
+
+		rl.recurLimit = recurLimit;
+		/* @NOTE Is this the right thing to do? */
+		rl.currentRecur = 0;
+
+		return rl;
+	}
 }
diff --git a/src/main/java/bjc/rgens/parser/elements/RuleCaseElement.java b/src/main/java/bjc/rgens/parser/elements/RuleCaseElement.java
index 66c0296..c299963 100755
--- a/src/main/java/bjc/rgens/parser/elements/RuleCaseElement.java
+++ b/src/main/java/bjc/rgens/parser/elements/RuleCaseElement.java
@@ -51,7 +51,7 @@ public abstract class RuleCaseElement extends StringCaseElement {
 			newState.swapGrammar(dst);
 
 			/* :Postprocessing */
-			newState.contents = new StringBuilder(dst.generate(actName, state.rnd, state.vars));
+			newState.contents = new StringBuilder(dst.generate(actName, state.rnd, state.vars, state.rlVars));
 		} else {
 			/*
 			 * @TODO 5/29/18 Ben Culkin :RuleSuggesting
-- 
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