refactor(dev): unify user-facing diagnostics

src/irgen/IRGenStmt.cpp

@@ -4,18 +4,19 @@
 
 #include "SysYParser.h"
 #include "ir/IR.h"
+#include "utils/Log.h"
 
 bool IRGenImpl::GenStmt(SysYParser::StmtContext& stmt) {
   if (stmt.returnStmt()) {
     GenReturnStmt(*stmt.returnStmt());
     return true;
   }
-  throw std::runtime_error("[irgen] 暂不支持的语句类型");
+  throw std::runtime_error(FormatError("irgen", "暂不支持的语句类型"));
 }
 
 void IRGenImpl::GenReturnStmt(SysYParser::ReturnStmtContext& ret) {
   if (!ret.exp()) {
-    throw std::runtime_error("[irgen] return 缺少表达式");
+    throw std::runtime_error(FormatError("irgen", "return 缺少表达式"));
   }
   ir::Value* v = GenExpr(*ret.exp());
   builder_.CreateRet(v);