feat(llcppsymg): filter static function for AST scanning

_xtool/llcppsymg/internal/symg/parse.go

@@ -226,8 +226,15 @@ func (p *SymbolProcessor) visitTop(cursor, parent clang.Cursor) clang.ChildVisit
 	case clang.CursorNamespace, clang.CursorClassDecl:
 		clangutils.VisitChildren(cursor, p.visitTop)
 	case clang.CursorCXXMethod, clang.CursorFunctionDecl, clang.CursorConstructor, clang.CursorDestructor:
-		isPublicMethod := (cursor.CXXAccessSpecifier() == clang.CXXPublic) && cursor.Kind == clang.CursorCXXMethod || cursor.Kind == clang.CursorConstructor || cursor.Kind == clang.CursorDestructor
-		if p.isSelfFile(filename) && (cursor.Kind == clang.CursorFunctionDecl || isPublicMethod) {
+		isPublicFunc := cursor.Kind == clang.CursorFunctionDecl &&
+			cursor.StorageClass() != clang.SCStatic
+
+		isPublicMethod := cursor.CXXAccessSpecifier() == clang.CXXPublic &&
+			cursor.Kind == clang.CursorCXXMethod ||
+			cursor.Kind == clang.CursorConstructor ||
+			cursor.Kind == clang.CursorDestructor
+
+		if p.isSelfFile(filename) && (isPublicFunc || isPublicMethod) {
 			p.collectFuncInfo(cursor)
 		}
 	}

_xtool/llcppsymg/internal/symg/symg_test.go

@@ -428,6 +428,10 @@ func TestGen(t *testing.T) {
 				"ZN9INIReaderD1Ev",
 				"ZNK9INIReader10ParseErrorEv",
 				"ZNK9INIReader3GetEPKcS1_S1_",
+				// Check whether private fields are filtered.
+				// If not, the result will certainly not match expect.json.
+				// NOTE(MeteorsLiu): Symbols below this comment must be removed during regeneration.
+				"ZN9INIReader7MakeKeyERKiS1_",
 			},
 		},
 		{
@@ -474,6 +478,10 @@ func TestGen(t *testing.T) {
 				"Foo",
 				"Foo_Bar",
 				"Foo_Conf",
+				// only for checking the result of private fields filtering
+				// NOTE(MeteorsLiu): Symbols below this comment must be removed during regeneration.
+				"Foo_Bar_Private",
+				"Foo_Bar_Private2",
 			},
 		},
 	}

_xtool/llcppsymg/internal/symg/testdata/include/src/core/core.h

@@ -1,2 +1,7 @@
 #include "../conf.h"
 void Foo_Bar();
+
+#define private static
+static void Foo_Bar_Private();
+private
+void Foo_Bar_Private2();