Add a diagnostics getter to ComponentCompiler

api/sixtyfps-cpp/include/sixtyfps_interpreter.h

@@ -473,6 +473,9 @@ public:
     }
 };
 
+using Diagnostic = sixtyfps::cbindgen_private::CDiagnostic;
+using DiagnosticLevel = sixtyfps::cbindgen_private::CDiagnosticLevel;
+
 class ComponentCompiler
 {
     cbindgen_private::ComponentCompilerOpaque inner;
@@ -513,6 +516,13 @@ public:
         return paths;
     }
 
+    sixtyfps::SharedVector<Diagnostic> diagnostics() const
+    {
+        sixtyfps::SharedVector<Diagnostic> result;
+        cbindgen_private::sixtyfps_interpreter_component_compiler_get_diagnostics(&inner, &result);
+        return result;
+    }
+
     std::optional<ComponentDefinition> build_from_source(std::string_view source_code,
                                                          std::string_view path)
     {

api/sixtyfps-cpp/include/sixtyfps_string.h

@@ -88,6 +88,22 @@ struct SharedString
     /// \return true if the string contains no characters; false otherwise.
     bool empty() const { return std::string_view(*this).empty(); }
 
+    /// \return true if the string starts with the specified prefix string; false otherwise
+    bool starts_with(std::string_view prefix) const
+    {
+        return std::string_view(*this).substr(0, prefix.size()) == prefix;
+    }
+
+    /// \return true if the string ends with the specified prefix string; false otherwise
+    bool ends_with(std::string_view prefix) const
+    {
+        std::string_view self_view(*this);
+        return self_view.size() >= prefix.size()
+                && self_view.compare(self_view.size() - prefix.size(), std::string_view::npos,
+                                     prefix)
+                == 0;
+    }
+
     /// Creates a new SharedString from the given number \a n. The string representation of the
     /// number uses a minimal formatting scheme: If \a n has no fractional part, the number will be
     /// formatted as an integer.

api/sixtyfps-cpp/tests/tests.cpp

@@ -282,6 +282,10 @@ SCENARIO("Component Compiler")
     {
         auto result = compiler.build_from_path(SOURCE_DIR "/file-not-there.60");
         REQUIRE_FALSE(result.has_value());
+        auto diags = compiler.diagnostics();
+
+        REQUIRE(diags.size() == 1);
+        REQUIRE(diags[0].message.starts_with("Could not load"));
     }
 
     SECTION("Compile from path")