feat(compile): print errors as json for yaksha compile command

YakshaLang · Apr 12, 2024 · c3630fa · c3630fa
1 parent 0f0c0a0
commit c3630fa
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Showing 3 changed files with 33 additions and 5 deletions.
diff --git a/compiler/src/comp_main.cpp b/compiler/src/comp_main.cpp
@@ -50,9 +50,9 @@ int main(int argc, char *argv[]) {
       argparser::ARGS(PROGRAM_NAME, "Compile Yaksha code to C code", "");
   auto help = argparser::OP_BOOL('h', "--help", "Print this help message");
   auto no_main = argparser::OP_BOOL('N', "--no-main", "Disable main() check");
-  auto no_codegen =
-      argparser::OP_BOOL('d', "--disable-codegen",
-                         "Do not output generated code, instead just print errors.");
+  auto no_codegen = argparser::OP_BOOL(
+      'd', "--disable-codegen",
+      "Do not output generated code, instead just print errors as JSON.");
   args.optional_ = {&help, &no_main, &no_codegen};
   auto code = argparser::PO("mainfile.yaka", "Yaksha code file.");
   auto lib = argparser::PO_OPT("[LIBS_PARENT_PATH]",
@@ -72,6 +72,7 @@ int main(int argc, char *argv[]) {
   multifile_compiler mc{};
   try {
     mc.main_required_ = !no_main.is_set_;
+    if (no_codegen.is_set_) { mc.error_printer_.json_output_ = true; }
     codegen_c cg{};
     do_nothing_codegen dn_cg{};
     codegen *cg_ptr = &cg;

diff --git a/compiler/src/utilities/error_printer.cpp b/compiler/src/utilities/error_printer.cpp
@@ -75,9 +75,34 @@ namespace yaksha::errors {
   bool error_printer::has_no_errors() { return error_capture.empty(); }
 #endif
   void error_printer::print_errors(const std::vector<parsing_error> &errors) {
+    if (json_output_) {
+      std::cerr << errors_to_json_lines(errors);
+      return;
+    } else {
+      for (auto &err : errors) {
+        print_error(std::cerr, err);
+        std::cerr << "\n";
+      }
+    }
+  }
+  std::string
+  error_printer::errors_to_json_lines(const std::vector<parsing_error> &errors) {
+    std::stringstream ss{};
     for (auto &err : errors) {
-      print_error(std::cerr, err);
-      std::cerr << "\n";
+      ss << "{";
+      if (err.token_set_) {
+        ss << "\"file\":\"" << string_utils::escape_json(err.tok_.file_) << "\",";
+        auto relative_file = std::filesystem::relative(err.tok_.file_, "./").string();
+        ss << "\"relative_file\":\"" << string_utils::escape_json(relative_file) << "\",";
+        ss << "\"line\":" << err.tok_.line_ + 1 << ",";
+        ss << "\"pos\":" << err.tok_.pos_ << ",";
+        ss << "\"message\":\"" << string_utils::escape_json(err.message_) << "\",";
+        ss << "\"token\":\"" << string_utils::escape_json(err.tok_.original_) << "\"";
+      } else {
+        ss << "\"message\":\"" << string_utils::escape_json(err.message_) << "\"";
+      }
+      ss << "}\n";
     }
+    return ss.str();
   }
 }// namespace yaksha::errors
diff --git a/compiler/src/utilities/error_printer.h b/compiler/src/utilities/error_printer.h
@@ -66,6 +66,7 @@ namespace yaksha::errors {
     bool has_any_error();
     bool has_no_errors();
 #endif
+    bool json_output_ = false;
     /**
      * Print a vector of errors to std::cerr
      * @param errors errors to print
@@ -78,6 +79,7 @@ namespace yaksha::errors {
     // This is used for type checker testing
     std::vector<std::string> error_capture{};
 #endif
+    std::string errors_to_json_lines(const std::vector<parsing_error> &errors);
   };
 }// namespace yaksha::errors
 #endif