Applying readability-simplify-boolean-expr clang-tidy fixes

src/class_diagram/model/template_parameter.cc

@@ -86,11 +86,9 @@ bool template_parameter::is_variadic() const noexcept { return is_variadic_; }
 bool template_parameter::is_specialization_of(
     const template_parameter &ct) const
 {
-    if ((ct.is_template_parameter() || ct.is_template_template_parameter()) &&
-        !is_template_parameter())
-        return true;
-
-    return false;
+    return (ct.is_template_parameter() ||
+               ct.is_template_template_parameter()) &&
+        !is_template_parameter();
 }
 
 void template_parameter::add_template_param(template_parameter &&ct)

src/common/model/diagram_filter.h

@@ -347,10 +347,7 @@ public:
         auto inc = tvl::all_of(inclusive_.begin(), inclusive_.end(),
             [this, &e](const auto &in) { return in->match(diagram_, e); });
 
-        if (tvl::is_undefined(inc) || tvl::is_true(inc))
-            return true;
-
-        return false;
+        return static_cast<bool>(tvl::is_undefined(inc) || tvl::is_true(inc));
     }
 
 private:

src/common/model/tvl.h

@@ -38,7 +38,7 @@ inline value_t all_of(InputIterator first, InputIterator last, Predicate pred)
     for (InputIterator it = first; it != last; it++) {
         value_t m = pred(*it);
         if (m.has_value()) {
-            if (m.value() == true) {
+            if (m.value()) {
                 res = true;
             }
             else {
@@ -59,7 +59,7 @@ inline value_t any_of(InputIterator first, InputIterator last, Predicate pred)
     for (InputIterator it = first; it != last; it++) {
         value_t m = pred(*it);
         if (m.has_value()) {
-            if (m.value() == true) {
+            if (m.value()) {
                 res = true;
                 break;
             }

src/sequence_diagram/visitor/translation_unit_visitor.cc

@@ -2125,10 +2125,7 @@ bool translation_unit_visitor::should_include(const clang::CallExpr *expr) const
         return false;
 
     const auto expr_file = expr->getBeginLoc().printToString(source_manager());
-    if (!diagram().should_include(common::model::source_file{expr_file}))
-        return false;
-
-    return true;
+    return diagram().should_include(common::model::source_file{expr_file});
 }
 
 bool translation_unit_visitor::should_include(