From 5444cd4db8a0fa41d25cd303c1145cadd112e12f Mon Sep 17 00:00:00 2001
From: bjculkin <bjculkin@mix.wvu.edu>
Date: Tue, 21 Mar 2017 19:29:27 -0400
Subject: Add formatter

Adds a formatter capable of taking in a parsed grammar and printing it out
in a formatted form, capable of being reparsed.
---
 .../main/java/bjc/rgens/newparser/RGrammar.java    | 45 ++++++++++++++++------
 1 file changed, 33 insertions(+), 12 deletions(-)

(limited to 'RGens/src/main/java/bjc/rgens/newparser/RGrammar.java')

diff --git a/RGens/src/main/java/bjc/rgens/newparser/RGrammar.java b/RGens/src/main/java/bjc/rgens/newparser/RGrammar.java
index 35fc356..3e82779 100644
--- a/RGens/src/main/java/bjc/rgens/newparser/RGrammar.java
+++ b/RGens/src/main/java/bjc/rgens/newparser/RGrammar.java
@@ -114,18 +114,7 @@ public class RGrammar {
 				state.contents.append(elm.getLiteral() + " ");
 				break;
 			case RULEREF:
-				if(rules.containsKey(elm.getLiteral())) {
-					RuleCase cse = rules.get(elm.getLiteral()).getCase();
-
-					generateCase(cse, state);
-				} else if(importRules.containsKey(elm.getLiteral())) {
-					RGrammar dst = importRules.get(elm.getLiteral());
-
-					state.contents.append(dst.generate(elm.getLiteral()));
-				} else {
-					throw new GrammarException(
-							String.format("No rule by name '%s' found", elm.getLiteral()));
-				}
+				generateRuleReference(elm, state);
 				break;
 			default:
 				throw new GrammarException(String.format("Unknown element type '%s'", elm.type));
@@ -135,6 +124,29 @@ public class RGrammar {
 		}
 	}
 
+	/*
+	 * Generate a rule reference.
+	 */
+	private void generateRuleReference(CaseElement elm, GenerationState state) {
+		String refersTo = elm.getLiteral();
+
+		GenerationState newState = new GenerationState(new StringBuilder());
+
+		if(rules.containsKey(refersTo)) {
+			RuleCase cse = rules.get(refersTo).getCase();
+
+			generateCase(cse, newState);
+		} else if(importRules.containsKey(refersTo)) {
+			RGrammar dst = importRules.get(refersTo);
+
+			newState.contents.append(dst.generate(refersTo));
+		} else {
+			throw new GrammarException(String.format("No rule by name '%s' found", refersTo));
+		}
+
+			state.contents.append(newState.contents.toString());
+	}
+
 	/**
 	 * Get the initial rule of this grammar.
 	 * 
@@ -205,4 +217,13 @@ public class RGrammar {
 	public void setExportedRules(Set<String> exportRules) {
 		this.exportRules = exportRules;
 	}
+
+	/**
+	 * Get all the rules in this grammar.
+	 * 
+	 * @return All the rules in this grammar.
+	 */
+	public Map<String, Rule> getRules() {
+		return rules;
+	}
 }
-- 
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