llvmir some opt

error/Errors.java

@@ -0,0 +1,43 @@
+package error;
+
+import java.util.ArrayList;
+
+public class Errors {
+    private ArrayList<Error> errors;
+
+    public Errors() {
+        this.errors = new ArrayList<Error>();
+    }
+
+    public void addError(Error error) {
+        int index = 0;
+        if (this.errors.size() == 0 || 
+            this.errors.get(this.errors.size() - 1).getLine() <= error.getLine()) {
+            this.errors.add(error);
+            return;
+        }
+        if (this.errors.get(0).getLine() > error.getLine()) {
+            this.errors.add(index, error);
+            return;
+        }
+        for (int i = this.errors.size() - 1; i >= 0; i--) {
+            if (this.errors.get(i).getLine() <= error.getLine()) {
+                index = i + 1;
+                break;
+            }
+        }
+        this.errors.add(index, error);
+    }
+
+    public int size() {
+        return this.errors.size();
+    }
+
+    public StringBuilder toStringBuilder() {
+        StringBuilder sb = new StringBuilder();
+        for (Error error : this.errors) {
+            sb.append(error.toString());
+        }
+        return sb;
+    }
+}