1 files changed, 93 insertions, 0 deletions
diff --git a/Homework/cs5300/project-three/parser/Rule.java b/Homework/cs5300/project-three/parser/Rule.java
new file mode 100644
index 0000000..b251e84
--- /dev/null
+++ b/Homework/cs5300/project-three/parser/Rule.java
@@ -0,0 +1,93 @@
+/*
+ * Do not modify this file.
+ */
+package parser;
+
+import java.util.ArrayList;
+import java.util.Objects;
+
+/**
+ *
+ */
+public class Rule {
+
+  private int name;
+  private final String lhs;
+  private ArrayList<String> rhs;
+
+  public Rule(String lhs) {
+    this.name = 0;
+    this.lhs = lhs;
+    rhs = new ArrayList<>();
+  }
+
+  public void setName(int name) {
+    this.name = name;
+  }
+
+  public int getName() {
+    return this.name;
+  }
+
+  @Override
+  public String toString() {
+    String ret = "R" + name + " " + lhs + " -> ";
+    for (String symbol : getRhs()) {
+      ret = ret + symbol + " ";
+    }
+    return ret;
+  }
+
+  @Override
+  public int hashCode() {
+    int hash = 7;
+    hash = 37 * hash + Objects.hashCode(this.lhs);
+    hash = 37 * hash + this.name;
+    for (int i = 0; i < this.rhs.size(); ++i) {
+      hash = 37 * hash + Objects.hashCode(this.rhs.get(i));
+    }
+    return hash;
+  }
+
+  @Override
+  public boolean equals(Object obj) {
+    if (obj == null) {
+      return false;
+    }
+    if (getClass() != obj.getClass()) {
+      return false;
+    }
+    final Rule other = (Rule) obj;
+    if (!this.lhs.equals(other.lhs)) {
+      return false;
+    }
+    if (this.name != other.name) {
+      return false;
+    }
+    if (this.rhs.size() != other.rhs.size()) {
+      return false;
+    }
+    for (int i = 0; i < this.rhs.size(); ++i) {
+      if (!this.rhs.get(i).equals(other.rhs.get(i))) {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  public String getLhs() {
+    return lhs;
+  }
+
+  public ArrayList<String> getRhs() {
+    if (rhs.isEmpty()) {
+      rhs.add("EPSILON");
+    }
+    return rhs;
+  }
+
+  public void addRhs(String symbol) {
+    rhs.add(symbol);
+  }
+
+}