config_parser: Pass barname as argument to parse() (#2765)

Doesn't need to be a class field

include/components/config_parser.hpp

@@ -90,12 +90,12 @@ struct line_t {
 
 class config_parser {
  public:
-  config_parser(const logger& logger, string&& file, string&& bar);
+  config_parser(const logger& logger, string&& file);
   /**
    * This prevents passing a temporary logger to the constructor because that would be UB, as the temporary would be
    * destroyed once the constructor returns.
    */
-  config_parser(logger&& logger, string&& file, string&& bar) = delete;
+  config_parser(logger&& logger, string&& file) = delete;
 
   /**
    * @brief Performs the parsing of the main config file m_file
@@ -105,7 +105,7 @@ class config_parser {
    * @throws syntax_error If there was any kind of syntax error
    * @throws parser_error If aynthing else went wrong
    */
-  config::make_type parse();
+  config::make_type parse(string barname);
 
  protected:
   /**
@@ -231,11 +231,6 @@ class config_parser {
    */
   string m_config;
 
-  /**
-   * Is used to resolve ${root...} references
-   */
-  string m_barname;
-
   /**
    * @brief List of all the lines in the config (with included files)
    *

src/components/config_parser.cpp

@@ -10,10 +10,10 @@
 
 POLYBAR_NS
 
-config_parser::config_parser(const logger& logger, string&& file, string&& bar)
-    : m_log(logger), m_config(file_util::expand(file)), m_barname(move(bar)) {}
+config_parser::config_parser(const logger& logger, string&& file)
+    : m_log(logger), m_config(file_util::expand(file)) {}
 
-config::make_type config_parser::parse() {
+config::make_type config_parser::parse(string barname) {
   m_log.notice("Parsing config file: %s", m_config);
 
   parse_file(m_config, {});
@@ -21,21 +21,21 @@ config::make_type config_parser::parse() {
   sectionmap_t sections = create_sectionmap();
 
   vector<string> bars = get_bars(sections);
-  if (m_barname.empty()) {
+  if (barname.empty()) {
     if (bars.size() == 1) {
-      m_barname = bars[0];
+      barname = bars[0];
     } else if (bars.empty()) {
       throw application_error("The config file contains no bar.");
     } else {
       throw application_error("The config file contains multiple bars, but no bar name was given. Available bars: " +
                               string_util::join(bars, ", "));
     }
-  } else if (sections.find("bar/" + m_barname) == sections.end()) {
+  } else if (sections.find("bar/" + barname) == sections.end()) {
     if (bars.empty()) {
-      throw application_error("Undefined bar: " + m_barname + ". The config file contains no bar.");
+      throw application_error("Undefined bar: " + barname + ". The config file contains no bar.");
     } else {
       throw application_error(
-          "Undefined bar: " + m_barname + ". Available bars: " + string_util::join(get_bars(sections), ", "));
+          "Undefined bar: " + barname + ". Available bars: " + string_util::join(get_bars(sections), ", "));
     }
   }
 
@@ -45,7 +45,7 @@ config::make_type config_parser::parse() {
    * second element onwards for the included list
    */
   file_list included(m_files.begin() + 1, m_files.end());
-  config::make_type result = config::make(m_config, m_barname);
+  config::make_type result = config::make(m_config, barname);
 
   // Cast to non-const to set sections, included and xrm
   config& m_conf = const_cast<config&>(result);

src/main.cpp

@@ -127,8 +127,8 @@ int main(int argc, char** argv) {
       barname = cli->get(0);
     }
 
-    config_parser parser{logger, move(confpath), move(barname)};
-    config::make_type conf = parser.parse();
+    config_parser parser{logger, move(confpath)};
+    config::make_type conf = parser.parse(move(barname));
 
     //==================================================
     // Dump requested data

tests/unit_tests/components/config_parser.cpp

@@ -13,8 +13,8 @@ class TestableConfigParser : public config_parser {
   using config_parser::config_parser;
 
  public:
-  TestableConfigParser(const logger& logger, string&& file, string&& bar)
-      : config_parser(logger, move(file), move(bar)) {
+  TestableConfigParser(const logger& logger, string&& file)
+      : config_parser(logger, move(file)) {
     m_files.push_back("test_config");
   }
 
@@ -43,7 +43,7 @@ class TestableConfigParser : public config_parser {
 class ConfigParser : public ::testing::Test {
  protected:
   const logger l = logger(loglevel::NONE);
-  unique_ptr<TestableConfigParser> parser = make_unique<TestableConfigParser>(l, "/dev/zero", "TEST");
+  unique_ptr<TestableConfigParser> parser = make_unique<TestableConfigParser>(l, "/dev/zero");
 };
 
 // ParseLineTest {{{