llvmir some opt

Compiler.java

@@ -0,0 +1,42 @@
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import frontend.lexer.Lexer;
+import frontend.lexer.TokenStream;
+import frontend.parser.Parser;
+import midend.Midend;
+import midend.errorhandle.ErrorHandler;
+
+import error.Errors;
+import midend.symbol.SymbolManager;
+
+public class Compiler {
+    public static void main(String[] args) {
+        Errors errors = new Errors();
+        try {
+            String content = new String(Files.readAllBytes(Paths.get("testfile.txt")));
+            String llvmFile = "llvm_ir.txt";
+            String errorFile = "error.txt";
+            Lexer lexer = new Lexer(content);
+            lexer.lex(errors);
+            TokenStream ts = new TokenStream(lexer.getTokens());
+            Parser parser = new Parser(ts);
+            parser.parse(errors);
+            ErrorHandler errorHandler = new ErrorHandler(parser.getCompUnit());
+            errorHandler.visit(errors);
+            // for (int i : SymbolManager.getSequence()) {
+            //     System.out.print(i + " ");
+            // }
+            // System.out.println();  // TODO:debug
+            if (errors.size() > 0) {
+                StringBuilder sb = errors.toStringBuilder();
+                Files.write(Paths.get(errorFile), sb.toString().getBytes());
+            } else {
+                Midend midend = new Midend(parser.getCompUnit());
+                midend.generateLLvmIr();
+                midend.writeToFile(llvmFile);
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+}