pkg/codesearch: do indexing of struct/union/enum

Update #6469

Author: dvyukov

pkg/codesearch/database.go

@@ -44,7 +44,7 @@ type LineRange struct {
 var DatabaseFormatHash = func() string {
 	// Semantic version should be bumped when the schema does not change,
 	// but stored values changes.
-	const semanticVersion = "1"
+	const semanticVersion = "2"
 	schema, err := jsonschema.For[Database](nil)
 	if err != nil {
 		panic(err)

pkg/codesearch/testdata/query-def-source-header

@@ -2,7 +2,7 @@ def-source source0.c function_with_comment_in_header yes
 
 function function_with_comment_in_header is defined in source0.c:
 
-  19:	void function_with_comment_in_header()
-  20:	{
-  21:		same_name_in_several_files();
-  22:	}
+  24:	void function_with_comment_in_header()
+  25:	{
+  26:		same_name_in_several_files();
+  27:	}

pkg/codesearch/testdata/query-def-source-open

@@ -2,10 +2,10 @@ def-source source0.c open yes
 
 function open is defined in source0.c:
 
-   6:	/*
-   7:	 * Comment about open.
-   8:	 */
-   9:	int open()
-  10:	{
-  11:		return 0;
-  12:	}
+  11:	/*
+  12:	 * Comment about open.
+  13:	 */
+  14:	int open()
+  15:	{
+  16:		return 0;
+  17:	}

pkg/codesearch/testdata/query-def-source-struct0

@@ -0,0 +1,8 @@
+def-source source0.c struct_in_c_file yes
+
+struct struct_in_c_file is defined in source0.c:
+
+   6:	struct struct_in_c_file {
+   7:		int X;
+   8:		struct some_struct by_value;
+   9:	};

pkg/codesearch/testdata/query-def-source-struct1

@@ -0,0 +1,8 @@
+def-source source0.c some_struct yes
+
+struct some_struct is defined in source0.h:
+
+  17:	struct some_struct {
+  18:		int x;
+  19:		int y;
+  20:	};

pkg/codesearch/testdata/query-def-source-struct2

@@ -0,0 +1,5 @@
+def-source source0.c some_struct_t yes
+
+typedef some_struct_t is defined in source0.h:
+
+  22:	typedef struct some_struct some_struct_t;

pkg/codesearch/testdata/query-def-source-struct3

@@ -0,0 +1,11 @@
+def-source source0.c some_struct_with_a_comment yes
+
+struct some_struct_with_a_comment is defined in source0.h:
+
+  24:	/*
+  25:	 * This should not require an explanation.
+  26:	 */
+  27:	struct some_struct_with_a_comment {
+  28:		int x;
+  29:		struct some_struct* other_struct;
+  30:	};

pkg/codesearch/testdata/query-def-source-struct4

@@ -0,0 +1,7 @@
+def-source source0.c typedefed_struct_t yes
+
+typedef typedefed_struct_t is defined in source0.h:
+
+  32:	typedef struct {
+  33:		int x;
+  34:	} typedefed_struct_t;

pkg/codesearch/testdata/query-def-source-struct5

@@ -0,0 +1,7 @@
+def-source source0.c another_struct yes
+
+struct another_struct is defined in source0.h:
+
+  36:	typedef struct another_struct {
+  37:		int x;
+  38:	} another_struct_t;

pkg/codesearch/testdata/query-def-source-struct6

@@ -0,0 +1,7 @@
+def-source source0.c another_struct_t yes
+
+typedef another_struct_t is defined in source0.h:
+
+  36:	typedef struct another_struct {
+  37:		int x;
+  38:	} another_struct_t;