1 files changed, 58 insertions, 0 deletions
diff --git a/Homework/cs5300/compiler/p5-compiler/submit/ast/Assignment.java b/Homework/cs5300/compiler/p5-compiler/submit/ast/Assignment.java
new file mode 100644
index 0000000..9c06cbe
--- /dev/null
+++ b/Homework/cs5300/compiler/p5-compiler/submit/ast/Assignment.java
@@ -0,0 +1,58 @@
+/*
+ * Code formatter project
+ * CS 4481
+ */
+package submit.ast;
+
+import submit.MIPSResult;
+import submit.RegisterAllocator;
+import submit.SymbolTable;
+
+/**
+ *
+ * @author edwajohn
+ */
+public class Assignment extends AbstractNode implements Expression {
+
+  private final Mutable mutable;
+  private final AssignmentType type;
+  private final Expression rhs;
+
+  public Assignment(Mutable mutable, String assign, Expression rhs) {
+    this.mutable = mutable;
+    this.type = AssignmentType.fromString(assign);
+    this.rhs = rhs;
+  }
+
+  public void toCminus(StringBuilder builder, final String prefix) {
+    mutable.toCminus(builder, prefix);
+    if (rhs != null) {
+      builder.append(" ").append(type.toString()).append(" ");
+      rhs.toCminus(builder, prefix);
+    } else {
+      builder.append(type.toString());
+    }
+  }
+
+  public MIPSResult toMIPS(StringBuilder code, StringBuilder data,
+                           SymbolTable symbolTable,
+                           RegisterAllocator regAllocator) {
+    MIPSResult mut = mutable.toMIPS(code, data, symbolTable, regAllocator);
+    MIPSResult result = rhs.toMIPS(code, data, symbolTable, regAllocator);
+
+    String registerWithAddressOfMutable = mut.getAddress();
+
+    if (result.getRegister() != null) {
+      code.append(String.format("sw %s 0(%s)\n", result.getRegister(),
+                                registerWithAddressOfMutable));
+      regAllocator.clear(result.getRegister());
+    } else if (result.getAddress() != null) {
+      regAllocator.loadIntoRegister(result, code, result.getAddress());
+      regAllocator.clear(result.getAddress());
+    }
+
+    regAllocator.clear(registerWithAddressOfMutable);
+
+    return MIPSResult.createVoidResult();
+  }
+}