diff --git a/src/indexer.cc b/src/indexer.cc
index cb5a7253..25d0d655 100644
--- a/src/indexer.cc
+++ b/src/indexer.cc
@@ -163,12 +163,12 @@ bool CanBeCalledImplicitly(CXIdxEntityKind kind) {
 bool CursorSpellingContainsString(CXCursor cursor, CXTranslationUnit cx_tu, std::string scanning_for) {
   CXSourceRange range = clang_Cursor_getSpellingNameRange(cursor, 0, 0);
   CXToken* tokens;
-  unsigned int num_tokens;
+  unsigned num_tokens;
   clang_tokenize(cx_tu, range, &tokens, &num_tokens);
 
   bool result = false;
 
-  for (size_t i = 0; i < num_tokens; ++i) {
+  for (unsigned i = 0; i < num_tokens; ++i) {
     CXString name = clang_getTokenSpelling(cx_tu, tokens[i]);
     if (strcmp(clang_getCString(name), scanning_for.c_str()) == 0) {
       result = true;
@@ -181,6 +181,47 @@ bool CursorSpellingContainsString(CXCursor cursor, CXTranslationUnit cx_tu, std:
   return result;
 }
 
+// Returns the document content for the given range. May not work perfectly
+// when there are tabs instead of spaces.
+std::string GetDocumentContentInRange(CXTranslationUnit cx_tu, CXSourceRange range) {
+  std::string result;
+
+  CXToken* tokens;
+  unsigned num_tokens;
+  clang_tokenize(cx_tu, range, &tokens, &num_tokens);
+
+  optional<Range> previous_token_range;
+
+  for (unsigned i = 0; i < num_tokens; ++i) {
+    // Add whitespace between the previous token and this one.
+    Range token_range = Resolve(clang_getTokenExtent(cx_tu, tokens[i]));
+    if (previous_token_range) {
+      // Insert newlines.
+      int16_t line_delta = token_range.start.line - previous_token_range->end.line;
+      assert(line_delta >= 0);
+      if (line_delta > 0) {
+        result.append((size_t)line_delta, '\n');
+        // Reset column so we insert starting padding.
+        previous_token_range->end.column = 0;
+      }
+      // Insert spaces.
+      int16_t column_delta = token_range.start.column - previous_token_range->end.column;
+      assert(column_delta >= 0);
+      result.append((size_t)column_delta, ' ');
+    }
+    previous_token_range = token_range;
+
+    // Add token content.
+    CXString spelling = clang_getTokenSpelling(cx_tu, tokens[i]);
+    result += clang_getCString(spelling);
+    clang_disposeString(spelling);
+  }
+
+  clang_disposeTokens(cx_tu, tokens, num_tokens);
+
+  return result;
+}
+
 }  // namespace
 
 
@@ -983,6 +1024,7 @@ void indexDeclaration(CXClientData client_data, const CXIdxDeclInfo* decl) {
     case CXIdxEntity_CXXStaticMethod:
     case CXIdxEntity_CXXConversionFunction: {
       Range decl_spelling = ResolveSpelling(decl->cursor);
+      Range decl_extent = ResolveExtent(decl->cursor);
 
       clang::Cursor decl_cursor = decl->cursor;
       clang::Cursor decl_cursor_resolved = decl_cursor.template_specialization_to_template_definition();
@@ -1005,27 +1047,34 @@ void indexDeclaration(CXClientData client_data, const CXIdxDeclInfo* decl) {
         assert(!func->def.definition_spelling);
         assert(!func->def.definition_extent);
         func->def.definition_spelling = decl_spelling;
-        func->def.definition_extent = ResolveExtent(decl->cursor);
+        func->def.definition_extent = decl_extent;
       }
       else {
         IndexFunc::Declaration declaration;
         declaration.spelling = decl_spelling;
+        declaration.extent = decl_extent;
+        declaration.content = GetDocumentContentInRange(param->tu->cx_tu, clang_getCursorExtent(decl->cursor));
 
-        /*
+        // Add parameters.
         for (clang::Cursor arg : decl_cursor.get_arguments()) {
           switch (arg.get_kind()) {
             case CXCursor_ParmDecl: {
-              IndexFunc::DeclarationVariable decl_var;
-              decl_var.content = arg.get_display_name(); // FIXME/TODO: scan actual tokens.
-              decl_var.spelling = ResolveSpelling(arg.cx_cursor);
-              declaration.vars.push_back(decl_var);
+              Range param_spelling = ResolveSpelling(arg.cx_cursor);
+
+              // If the name is empty (which is common for parameters), clang
+              // will report a range with length 1, which is not correct.
+              if (param_spelling.start.column == (param_spelling.end.column - 1) &&
+                  arg.get_display_name().empty()) {
+                param_spelling.end.column -= 1;
+              }
+
+              declaration.param_spellings.push_back(param_spelling);
               break;
             }
             default:
               break;
           }
         }
-        */
 
         func->declarations.push_back(declaration);
       }
diff --git a/src/indexer.h b/src/indexer.h
index 01ed0983..efd45e86 100644
--- a/src/indexer.h
+++ b/src/indexer.h
@@ -316,15 +316,15 @@ struct IndexFunc {
 
   IndexFuncId id;
 
-  struct DeclarationVariable {
-    // Spelled name of the variable.
-    Range spelling;
-    // Full text (including type) of the variable.
-    std::string content;
-  };
   struct Declaration {
+    // Range of only the function name.
     Range spelling;
-    std::vector<DeclarationVariable> vars;
+    // Full range of the declaration.
+    Range extent;
+    // Full text of the declaration.
+    std::string content;
+    // Location of the parameter names.
+    std::vector<Range> param_spellings;
   };
 
   // Places the function is forward-declared.
@@ -350,8 +350,7 @@ struct IndexFunc {
   }
 };
 MAKE_HASHABLE(IndexFunc, t.def.usr);
-MAKE_REFLECT_STRUCT(IndexFunc::DeclarationVariable, spelling, content);
-MAKE_REFLECT_STRUCT(IndexFunc::Declaration, spelling, vars);
+MAKE_REFLECT_STRUCT(IndexFunc::Declaration, spelling, extent, content, param_spellings);
 
 template <typename TypeId,
           typename FuncId,
diff --git a/src/test.cc b/src/test.cc
index ffa1567e..c0df52aa 100644
--- a/src/test.cc
+++ b/src/test.cc
@@ -109,9 +109,9 @@ void RunTests() {
       //if (path != "tests/templates/namespace_template_class_template_func_usage_folded_into_one.cc") continue;
       //if (path != "tests/multi_file/funky_enum.cc") continue;
       //if (path != "tests/multi_file/simple_impl.cc") continue;
-      //if (path != "tests/usage/func_called_implicit_ctor.cc") continue;
-      //if (path != "tests/templates/implicit_variable_instantiation.cc") continue;
-      //if (path != "tests/multi_file/bad_type_remove.cc") continue;
+      //if (path != "tests/inheritance/interface_pure_virtual.cc") continue;
+      //if (path != "tests/_empty_test.cc") continue;
+      //if (path != "tests/declaration_vs_definition/func_associated_function_params.cc") continue;
 
       //if (path != "tests/templates/template_class_type_usage_folded_into_one.cc") continue;
       //path = "C:/Users/jacob/Desktop/superindex/indexer/" + path;
diff --git a/tests/declaration_vs_definition/func.cc b/tests/declaration_vs_definition/func.cc
index e46fb21c..2af68de7 100644
--- a/tests/declaration_vs_definition/func.cc
+++ b/tests/declaration_vs_definition/func.cc
@@ -13,11 +13,17 @@ OUTPUT:
       "short_name": "foo",
       "detailed_name": "void foo()",
       "declarations": [{
-          "spelling": "1:6-1:9"
+          "spelling": "1:6-1:9",
+          "extent": "1:1-1:11",
+          "content": "void foo()"
         }, {
-          "spelling": "2:6-2:9"
+          "spelling": "2:6-2:9",
+          "extent": "2:1-2:11",
+          "content": "void foo()"
         }, {
-          "spelling": "4:6-4:9"
+          "spelling": "4:6-4:9",
+          "extent": "4:1-4:11",
+          "content": "void foo()"
         }],
       "definition_spelling": "3:6-3:9",
       "definition_extent": "3:1-3:14"
diff --git a/tests/declaration_vs_definition/func_associated_function_params.cc b/tests/declaration_vs_definition/func_associated_function_params.cc
new file mode 100644
index 00000000..81af9bf5
--- /dev/null
+++ b/tests/declaration_vs_definition/func_associated_function_params.cc
@@ -0,0 +1,54 @@
+int foo(int, int);
+int foo(int aa,
+        int bb);
+int foo(int aaa, int bbb);
+int foo(int a, int b) { return 0; }
+
+/*
+OUTPUT:
+{
+  "funcs": [{
+      "id": 0,
+      "usr": "c:@F@foo#I#I#",
+      "short_name": "foo",
+      "detailed_name": "int foo(int, int)",
+      "declarations": [{
+          "spelling": "1:5-1:8",
+          "extent": "1:1-1:18",
+          "content": "int foo(int, int)",
+          "param_spellings": ["1:12-1:12", "1:17-1:17"]
+        }, {
+          "spelling": "2:5-2:8",
+          "extent": "2:1-3:16",
+          "content": "int foo(int aa,\n         int bb)",
+          "param_spellings": ["2:13-2:15", "3:13-3:15"]
+        }, {
+          "spelling": "4:5-4:8",
+          "extent": "4:1-4:26",
+          "content": "int foo(int aaa, int bbb)",
+          "param_spellings": ["4:13-4:16", "4:22-4:25"]
+        }],
+      "definition_spelling": "5:5-5:8",
+      "definition_extent": "5:1-5:36"
+    }],
+  "vars": [{
+      "id": 0,
+      "usr": "c:func_associated_function_params.cc@91@F@foo#I#I#@a",
+      "short_name": "a",
+      "detailed_name": "int a",
+      "definition_spelling": "5:13-5:14",
+      "definition_extent": "5:9-5:14",
+      "is_local": true,
+      "uses": ["5:13-5:14"]
+    }, {
+      "id": 1,
+      "usr": "c:func_associated_function_params.cc@98@F@foo#I#I#@b",
+      "short_name": "b",
+      "detailed_name": "int b",
+      "definition_spelling": "5:20-5:21",
+      "definition_extent": "5:16-5:21",
+      "is_local": true,
+      "uses": ["5:20-5:21"]
+    }]
+}
+*/
diff --git a/tests/declaration_vs_definition/method.cc b/tests/declaration_vs_definition/method.cc
index eb2f2329..61fb0a19 100644
--- a/tests/declaration_vs_definition/method.cc
+++ b/tests/declaration_vs_definition/method.cc
@@ -25,7 +25,9 @@ OUTPUT:
       "short_name": "declonly",
       "detailed_name": "void Foo::declonly()",
       "declarations": [{
-          "spelling": "2:8-2:16"
+          "spelling": "2:8-2:16",
+          "extent": "2:3-2:18",
+          "content": "void declonly()"
         }],
       "declaring_type": 0
     }, {
@@ -34,7 +36,9 @@ OUTPUT:
       "short_name": "purevirtual",
       "detailed_name": "void Foo::purevirtual()",
       "declarations": [{
-          "spelling": "3:16-3:27"
+          "spelling": "3:16-3:27",
+          "extent": "3:3-3:33",
+          "content": "virtual void purevirtual() = 0"
         }],
       "declaring_type": 0
     }, {
@@ -43,7 +47,9 @@ OUTPUT:
       "short_name": "def",
       "detailed_name": "void Foo::def()",
       "declarations": [{
-          "spelling": "4:8-4:11"
+          "spelling": "4:8-4:11",
+          "extent": "4:3-4:13",
+          "content": "void def()"
         }],
       "definition_spelling": "7:11-7:14",
       "definition_extent": "7:1-7:19",
diff --git a/tests/function_declaration.cc b/tests/function_declaration.cc
index 5e2fe791..1ffc9c8d 100644
--- a/tests/function_declaration.cc
+++ b/tests/function_declaration.cc
@@ -9,7 +9,10 @@ OUTPUT:
       "short_name": "foo",
       "detailed_name": "void foo(int, int)",
       "declarations": [{
-          "spelling": "1:6-1:9"
+          "spelling": "1:6-1:9",
+          "extent": "1:1-1:23",
+          "content": "void foo(int a, int b)",
+          "param_spellings": ["1:14-1:15", "1:21-1:22"]
         }]
     }]
 }
diff --git a/tests/function_declaration_definition.cc b/tests/function_declaration_definition.cc
index 971f732f..daaf1a76 100644
--- a/tests/function_declaration_definition.cc
+++ b/tests/function_declaration_definition.cc
@@ -11,7 +11,9 @@ OUTPUT:
       "short_name": "foo",
       "detailed_name": "void foo()",
       "declarations": [{
-          "spelling": "1:6-1:9"
+          "spelling": "1:6-1:9",
+          "extent": "1:1-1:11",
+          "content": "void foo()"
         }],
       "definition_spelling": "3:6-3:9",
       "definition_extent": "3:1-3:14"
diff --git a/tests/inheritance/function_override.cc b/tests/inheritance/function_override.cc
index d23104ec..26709c7d 100644
--- a/tests/inheritance/function_override.cc
+++ b/tests/inheritance/function_override.cc
@@ -35,7 +35,9 @@ OUTPUT:
       "short_name": "foo",
       "detailed_name": "void Root::foo()",
       "declarations": [{
-          "spelling": "2:16-2:19"
+          "spelling": "2:16-2:19",
+          "extent": "2:3-2:21",
+          "content": "virtual void foo()"
         }],
       "declaring_type": 0,
       "derived": [1]
diff --git a/tests/method_declaration.cc b/tests/method_declaration.cc
index edf7b4cd..4f3c5326 100644
--- a/tests/method_declaration.cc
+++ b/tests/method_declaration.cc
@@ -25,7 +25,9 @@ OUTPUT:
       "short_name": "foo",
       "detailed_name": "void Foo::foo()",
       "declarations": [{
-          "spelling": "2:8-2:11"
+          "spelling": "2:8-2:11",
+          "extent": "2:3-2:13",
+          "content": "void foo()"
         }],
       "declaring_type": 0
     }]
diff --git a/tests/method_definition.cc b/tests/method_definition.cc
index 58061d8d..51e874aa 100644
--- a/tests/method_definition.cc
+++ b/tests/method_definition.cc
@@ -1,8 +1,8 @@
 class Foo {
-  void foo();
+  void foo() const;
 };
 
-void Foo::foo() {}
+void Foo::foo() const {}
 
 /*
 OUTPUT:
@@ -19,14 +19,16 @@ OUTPUT:
     }],
   "funcs": [{
       "id": 0,
-      "usr": "c:@S@Foo@F@foo#",
+      "usr": "c:@S@Foo@F@foo#1",
       "short_name": "foo",
-      "detailed_name": "void Foo::foo()",
+      "detailed_name": "void Foo::foo() const",
       "declarations": [{
-          "spelling": "2:8-2:11"
+          "spelling": "2:8-2:11",
+          "extent": "2:3-2:19",
+          "content": "void foo() const"
         }],
       "definition_spelling": "5:11-5:14",
-      "definition_extent": "5:1-5:19",
+      "definition_extent": "5:1-5:25",
       "declaring_type": 0
     }]
 }
diff --git a/tests/multi_file/simple_impl.cc b/tests/multi_file/simple_impl.cc
index 47306405..e8e9c95d 100644
--- a/tests/multi_file/simple_impl.cc
+++ b/tests/multi_file/simple_impl.cc
@@ -13,7 +13,9 @@ OUTPUT: simple_header.h
       "short_name": "header",
       "detailed_name": "void header()",
       "declarations": [{
-          "spelling": "3:6-3:12"
+          "spelling": "3:6-3:12",
+          "extent": "3:1-3:14",
+          "content": "void header()"
         }]
     }]
 }
diff --git a/tests/multi_file/static.cc b/tests/multi_file/static.cc
index 784b2276..baab62e4 100644
--- a/tests/multi_file/static.cc
+++ b/tests/multi_file/static.cc
@@ -21,7 +21,9 @@ OUTPUT: static.h
       "short_name": "CreateSharedBuffer",
       "detailed_name": "void Buffer::CreateSharedBuffer()",
       "declarations": [{
-          "spelling": "4:15-4:33"
+          "spelling": "4:15-4:33",
+          "extent": "4:3-4:35",
+          "content": "static void CreateSharedBuffer()"
         }],
       "declaring_type": 0
     }]
diff --git a/tests/namespaces/anonymous_function.cc b/tests/namespaces/anonymous_function.cc
index 7a25f0bc..9f11720f 100644
--- a/tests/namespaces/anonymous_function.cc
+++ b/tests/namespaces/anonymous_function.cc
@@ -11,7 +11,9 @@ OUTPUT:
       "short_name": "foo",
       "detailed_name": "void ::foo()",
       "declarations": [{
-          "spelling": "2:6-2:9"
+          "spelling": "2:6-2:9",
+          "extent": "2:1-2:11",
+          "content": "void foo()"
         }]
     }]
 }
diff --git a/tests/namespaces/function_declaration.cc b/tests/namespaces/function_declaration.cc
index 989662a2..90a5ce69 100644
--- a/tests/namespaces/function_declaration.cc
+++ b/tests/namespaces/function_declaration.cc
@@ -11,7 +11,10 @@ OUTPUT:
       "short_name": "foo",
       "detailed_name": "void hello::foo(int, int)",
       "declarations": [{
-          "spelling": "2:6-2:9"
+          "spelling": "2:6-2:9",
+          "extent": "2:1-2:23",
+          "content": "void foo(int a, int b)",
+          "param_spellings": ["2:14-2:15", "2:21-2:22"]
         }]
     }]
 }
diff --git a/tests/namespaces/method_declaration.cc b/tests/namespaces/method_declaration.cc
index 9c7fb93b..2695780e 100644
--- a/tests/namespaces/method_declaration.cc
+++ b/tests/namespaces/method_declaration.cc
@@ -23,7 +23,9 @@ OUTPUT:
       "short_name": "foo",
       "detailed_name": "void hello::Foo::foo()",
       "declarations": [{
-          "spelling": "3:8-3:11"
+          "spelling": "3:8-3:11",
+          "extent": "3:3-3:13",
+          "content": "void foo()"
         }],
       "declaring_type": 0
     }]
diff --git a/tests/namespaces/method_definition.cc b/tests/namespaces/method_definition.cc
index eafd7e3f..0eae147a 100644
--- a/tests/namespaces/method_definition.cc
+++ b/tests/namespaces/method_definition.cc
@@ -25,7 +25,9 @@ OUTPUT:
       "short_name": "foo",
       "detailed_name": "void hello::Foo::foo()",
       "declarations": [{
-          "spelling": "3:8-3:11"
+          "spelling": "3:8-3:11",
+          "extent": "3:3-3:13",
+          "content": "void foo()"
         }],
       "definition_spelling": "6:11-6:14",
       "definition_extent": "6:1-6:19",
diff --git a/tests/outline/outline2.cc b/tests/outline/outline2.cc
index 0da2ff68..3031f039 100644
--- a/tests/outline/outline2.cc
+++ b/tests/outline/outline2.cc
@@ -48,7 +48,10 @@ OUTPUT:
       "short_name": "LoadCompilationEntriesFromDirectory",
       "detailed_name": "std::vector<CompilationEntry> LoadCompilationEntriesFromDirectory(const std::string &)",
       "declarations": [{
-          "spelling": "12:31-12:66"
+          "spelling": "12:31-12:66",
+          "extent": "12:1-12:104",
+          "content": "std::vector<CompilationEntry> LoadCompilationEntriesFromDirectory(const std::string& project_directory)",
+          "param_spellings": ["12:86-12:103"]
         }]
     }],
   "vars": [{
diff --git a/tests/templates/func_specialized_template_param.cc b/tests/templates/func_specialized_template_param.cc
index ef725fd5..9e0d11c6 100644
--- a/tests/templates/func_specialized_template_param.cc
+++ b/tests/templates/func_specialized_template_param.cc
@@ -34,7 +34,10 @@ OUTPUT:
       "short_name": "Bar",
       "detailed_name": "void Foo::Bar(Template<double> &)",
       "declarations": [{
-          "spelling": "5:8-5:11"
+          "spelling": "5:8-5:11",
+          "extent": "5:3-5:30",
+          "content": "void Bar(Template<double>&)",
+          "param_spellings": ["5:29-5:29"]
         }],
       "definition_spelling": "8:11-8:14",
       "definition_extent": "8:1-8:36",
diff --git a/tests/templates/specialized_func_definition.cc b/tests/templates/specialized_func_definition.cc
index d6eb5b91..a57a2b40 100644
--- a/tests/templates/specialized_func_definition.cc
+++ b/tests/templates/specialized_func_definition.cc
@@ -31,9 +31,13 @@ OUTPUT:
       "short_name": "Foo",
       "detailed_name": "void Template::Foo()",
       "declarations": [{
-          "spelling": "3:8-3:11"
+          "spelling": "3:8-3:11",
+          "extent": "3:3-3:13",
+          "content": "void Foo()"
         }, {
-          "spelling": "9:22-9:25"
+          "spelling": "9:22-9:25",
+          "extent": "9:1-9:30",
+          "content": "void Template<void>::Foo() {}"
         }],
       "definition_spelling": "7:19-7:22",
       "definition_extent": "6:1-7:24",
diff --git a/tests/usage/func_called_from_constructor.cc b/tests/usage/func_called_from_constructor.cc
index c704bbcc..2dc9ac29 100644
--- a/tests/usage/func_called_from_constructor.cc
+++ b/tests/usage/func_called_from_constructor.cc
@@ -35,7 +35,9 @@ OUTPUT:
       "short_name": "Foo",
       "detailed_name": "void Foo::Foo()",
       "declarations": [{
-          "spelling": "4:3-4:6"
+          "spelling": "4:3-4:6",
+          "extent": "4:3-4:8",
+          "content": "Foo()"
         }],
       "definition_spelling": "7:6-7:9",
       "definition_extent": "7:1-9:2",
diff --git a/tests/usage/func_called_from_macro_argument.cc b/tests/usage/func_called_from_macro_argument.cc
index 03dc714b..82bae5c1 100644
--- a/tests/usage/func_called_from_macro_argument.cc
+++ b/tests/usage/func_called_from_macro_argument.cc
@@ -15,7 +15,10 @@ OUTPUT:
       "short_name": "called",
       "detailed_name": "bool called(bool, bool)",
       "declarations": [{
-          "spelling": "3:6-3:12"
+          "spelling": "3:6-3:12",
+          "extent": "3:1-3:28",
+          "content": "bool called(bool a, bool b)",
+          "param_spellings": ["3:18-3:19", "3:26-3:27"]
         }],
       "callers": ["1@6:14-6:20"]
     }, {
diff --git a/tests/usage/func_called_from_template.cc b/tests/usage/func_called_from_template.cc
index 0d480304..3d859dbc 100644
--- a/tests/usage/func_called_from_template.cc
+++ b/tests/usage/func_called_from_template.cc
@@ -20,7 +20,9 @@ OUTPUT:
       "short_name": "called",
       "detailed_name": "void called()",
       "declarations": [{
-          "spelling": "1:6-1:12"
+          "spelling": "1:6-1:12",
+          "extent": "1:1-1:14",
+          "content": "void called()"
         }],
       "callers": ["1@5:3-5:9"]
     }, {
diff --git a/tests/usage/func_called_implicit_ctor.cc b/tests/usage/func_called_implicit_ctor.cc
index 437fd191..9dd820cb 100644
--- a/tests/usage/func_called_implicit_ctor.cc
+++ b/tests/usage/func_called_implicit_ctor.cc
@@ -27,7 +27,10 @@ OUTPUT:
       "short_name": "Wrapper",
       "detailed_name": "void Wrapper::Wrapper(int)",
       "declarations": [{
-          "spelling": "2:3-2:10"
+          "spelling": "2:3-2:10",
+          "extent": "2:3-2:17",
+          "content": "Wrapper(int i)",
+          "param_spellings": ["2:15-2:16"]
         }],
       "declaring_type": 0,
       "callers": ["~2@8:10-8:16"]
diff --git a/tests/usage/func_usage_addr_method.cc b/tests/usage/func_usage_addr_method.cc
index 1a1fb4a3..021e91ff 100644
--- a/tests/usage/func_usage_addr_method.cc
+++ b/tests/usage/func_usage_addr_method.cc
@@ -26,7 +26,9 @@ OUTPUT:
       "short_name": "Used",
       "detailed_name": "void Foo::Used()",
       "declarations": [{
-          "spelling": "2:8-2:12"
+          "spelling": "2:8-2:12",
+          "extent": "2:3-2:14",
+          "content": "void Used()"
         }],
       "declaring_type": 0,
       "callers": ["1@6:18-6:22"]
diff --git a/tests/usage/func_usage_call_method.cc b/tests/usage/func_usage_call_method.cc
index 601088dd..f141c141 100644
--- a/tests/usage/func_usage_call_method.cc
+++ b/tests/usage/func_usage_call_method.cc
@@ -27,7 +27,9 @@ OUTPUT:
       "short_name": "Used",
       "detailed_name": "void Foo::Used()",
       "declarations": [{
-          "spelling": "2:8-2:12"
+          "spelling": "2:8-2:12",
+          "extent": "2:3-2:14",
+          "content": "void Used()"
         }],
       "declaring_type": 0,
       "callers": ["1@7:6-7:10"]
diff --git a/tests/usage/func_usage_forward_decl_func.cc b/tests/usage/func_usage_forward_decl_func.cc
index 8e433ccb..d9ab35e3 100644
--- a/tests/usage/func_usage_forward_decl_func.cc
+++ b/tests/usage/func_usage_forward_decl_func.cc
@@ -12,7 +12,9 @@ OUTPUT:
       "short_name": "foo",
       "detailed_name": "void foo()",
       "declarations": [{
-          "spelling": "1:6-1:9"
+          "spelling": "1:6-1:9",
+          "extent": "1:1-1:11",
+          "content": "void foo()"
         }],
       "callers": ["1@4:3-4:6"]
     }, {
diff --git a/tests/usage/func_usage_forward_decl_method.cc b/tests/usage/func_usage_forward_decl_method.cc
index 3f0538a8..2db6bfe1 100644
--- a/tests/usage/func_usage_forward_decl_method.cc
+++ b/tests/usage/func_usage_forward_decl_method.cc
@@ -26,7 +26,9 @@ OUTPUT:
       "short_name": "foo",
       "detailed_name": "void Foo::foo()",
       "declarations": [{
-          "spelling": "2:8-2:11"
+          "spelling": "2:8-2:11",
+          "extent": "2:3-2:13",
+          "content": "void foo()"
         }],
       "declaring_type": 0,
       "callers": ["1@7:6-7:9"]
diff --git a/tests/usage/func_usage_template_func.cc b/tests/usage/func_usage_template_func.cc
index 5eba7686..8efd8ee0 100644
--- a/tests/usage/func_usage_template_func.cc
+++ b/tests/usage/func_usage_template_func.cc
@@ -15,7 +15,10 @@ OUTPUT:
       "short_name": "accept",
       "detailed_name": "void accept(T)",
       "declarations": [{
-          "spelling": "2:6-2:12"
+          "spelling": "2:6-2:12",
+          "extent": "2:1-2:15",
+          "content": "void accept(T)",
+          "param_spellings": ["2:14-2:14"]
         }],
       "callers": ["1@5:3-5:9", "1@6:3-6:9"]
     }, {
diff --git a/tests/usage/type_usage_as_template_parameter_complex.cc b/tests/usage/type_usage_as_template_parameter_complex.cc
index 40552e0a..981d3720 100644
--- a/tests/usage/type_usage_as_template_parameter_complex.cc
+++ b/tests/usage/type_usage_as_template_parameter_complex.cc
@@ -132,7 +132,9 @@ OUTPUT:
       "short_name": "foo",
       "detailed_name": "unique_ptr<S1, S2> *Foo::foo()",
       "declarations": [{
-          "spelling": "65:23-65:26"
+          "spelling": "65:23-65:26",
+          "extent": "65:3-65:28",
+          "content": "unique_ptr<S1, S2>* foo()"
         }],
       "definition_spelling": "79:26-79:29",
       "definition_extent": "79:1-79:51",
diff --git a/tests/usage/type_usage_declare_param_prototype.cc b/tests/usage/type_usage_declare_param_prototype.cc
index c955f8b6..9132cf77 100644
--- a/tests/usage/type_usage_declare_param_prototype.cc
+++ b/tests/usage/type_usage_declare_param_prototype.cc
@@ -23,7 +23,10 @@ OUTPUT:
       "short_name": "foo",
       "detailed_name": "void foo(Foo *, Foo *)",
       "declarations": [{
-          "spelling": "3:6-3:9"
+          "spelling": "3:6-3:9",
+          "extent": "3:1-3:23",
+          "content": "void foo(Foo* f, Foo*)",
+          "param_spellings": ["3:15-3:16", "3:22-3:22"]
         }],
       "definition_spelling": "4:6-4:9",
       "definition_extent": "4:1-4:26"
diff --git a/tests/usage/type_usage_on_return_type.cc b/tests/usage/type_usage_on_return_type.cc
index 57c48e29..0014b963 100644
--- a/tests/usage/type_usage_on_return_type.cc
+++ b/tests/usage/type_usage_on_return_type.cc
@@ -40,9 +40,13 @@ OUTPUT:
       "short_name": "foo",
       "detailed_name": "Type *foo()",
       "declarations": [{
-          "spelling": "3:7-3:10"
+          "spelling": "3:7-3:10",
+          "extent": "3:1-3:12",
+          "content": "Type* foo()"
         }, {
-          "spelling": "4:7-4:10"
+          "spelling": "4:7-4:10",
+          "extent": "4:1-4:12",
+          "content": "Type* foo()"
         }],
       "definition_spelling": "5:7-5:10",
       "definition_extent": "5:1-5:15"
@@ -52,7 +56,10 @@ OUTPUT:
       "short_name": "Get",
       "detailed_name": "Type *Foo::Get(int)",
       "declarations": [{
-          "spelling": "8:9-8:12"
+          "spelling": "8:9-8:12",
+          "extent": "8:3-8:17",
+          "content": "Type* Get(int)",
+          "param_spellings": ["8:16-8:16"]
         }],
       "definition_spelling": "12:12-12:15",
       "definition_extent": "12:1-12:23",
@@ -63,7 +70,9 @@ OUTPUT:
       "short_name": "Empty",
       "detailed_name": "void Foo::Empty()",
       "declarations": [{
-          "spelling": "9:8-9:13"
+          "spelling": "9:8-9:13",
+          "extent": "9:3-9:15",
+          "content": "void Empty()"
         }],
       "definition_spelling": "13:11-13:16",
       "definition_extent": "13:1-13:21",
@@ -74,7 +83,9 @@ OUTPUT:
       "short_name": "external",
       "detailed_name": "const Type &external()",
       "declarations": [{
-          "spelling": "15:20-15:28"
+          "spelling": "15:20-15:28",
+          "extent": "15:1-15:30",
+          "content": "extern const Type& external()"
         }]
     }, {
       "id": 4,
@@ -82,7 +93,9 @@ OUTPUT:
       "short_name": "bar",
       "detailed_name": "Type *bar()",
       "declarations": [{
-          "spelling": "17:14-17:17"
+          "spelling": "17:14-17:17",
+          "extent": "17:1-17:19",
+          "content": "static Type* bar()"
         }],
       "definition_spelling": "18:14-18:17",
       "definition_extent": "18:1-18:22"
diff --git a/tests/usage/type_usage_various.cc b/tests/usage/type_usage_various.cc
index 2360921e..3d606dd1 100644
--- a/tests/usage/type_usage_various.cc
+++ b/tests/usage/type_usage_various.cc
@@ -29,7 +29,9 @@ OUTPUT:
       "short_name": "make",
       "detailed_name": "Foo *Foo::make()",
       "declarations": [{
-          "spelling": "2:8-2:12"
+          "spelling": "2:8-2:12",
+          "extent": "2:3-2:14",
+          "content": "Foo* make()"
         }],
       "definition_spelling": "5:11-5:15",
       "definition_extent": "5:1-8:2",
diff --git a/tests/usage/usage_inside_of_call.cc b/tests/usage/usage_inside_of_call.cc
index fafc5670..aa194dac 100644
--- a/tests/usage/usage_inside_of_call.cc
+++ b/tests/usage/usage_inside_of_call.cc
@@ -33,7 +33,10 @@ OUTPUT:
       "short_name": "called",
       "detailed_name": "void called(int)",
       "declarations": [{
-          "spelling": "1:6-1:12"
+          "spelling": "1:6-1:12",
+          "extent": "1:1-1:19",
+          "content": "void called(int a)",
+          "param_spellings": ["1:17-1:18"]
         }],
       "callers": ["2@14:3-14:9"]
     }, {
@@ -42,7 +45,9 @@ OUTPUT:
       "short_name": "gen",
       "detailed_name": "int gen()",
       "declarations": [{
-          "spelling": "3:5-3:8"
+          "spelling": "3:5-3:8",
+          "extent": "3:1-3:10",
+          "content": "int gen()"
         }],
       "callers": ["2@14:14-14:17"]
     }, {
diff --git a/tests/usage/usage_inside_of_call_simple.cc b/tests/usage/usage_inside_of_call_simple.cc
index aa549307..22712e22 100644
--- a/tests/usage/usage_inside_of_call_simple.cc
+++ b/tests/usage/usage_inside_of_call_simple.cc
@@ -15,7 +15,10 @@ OUTPUT:
       "short_name": "called",
       "detailed_name": "void called(int)",
       "declarations": [{
-          "spelling": "1:6-1:12"
+          "spelling": "1:6-1:12",
+          "extent": "1:1-1:19",
+          "content": "void called(int a)",
+          "param_spellings": ["1:17-1:18"]
         }],
       "callers": ["2@6:3-6:9"]
     }, {
diff --git a/tests/usage/var_usage_class_member.cc b/tests/usage/var_usage_class_member.cc
index a6f13a1e..fe01b9f7 100644
--- a/tests/usage/var_usage_class_member.cc
+++ b/tests/usage/var_usage_class_member.cc
@@ -37,7 +37,10 @@ OUTPUT:
       "short_name": "accept",
       "detailed_name": "void accept(int)",
       "declarations": [{
-          "spelling": "7:6-7:12"
+          "spelling": "7:6-7:12",
+          "extent": "7:1-7:17",
+          "content": "void accept(int)",
+          "param_spellings": ["7:16-7:16"]
         }],
       "callers": ["2@14:3-14:9", "2@15:3-15:9", "2@17:3-17:9"]
     }, {
@@ -46,7 +49,10 @@ OUTPUT:
       "short_name": "accept",
       "detailed_name": "void accept(int *)",
       "declarations": [{
-          "spelling": "8:6-8:12"
+          "spelling": "8:6-8:12",
+          "extent": "8:1-8:18",
+          "content": "void accept(int*)",
+          "param_spellings": ["8:17-8:17"]
         }],
       "callers": ["2@16:3-16:9"]
     }, {
diff --git a/tests/usage/var_usage_class_member_static.cc b/tests/usage/var_usage_class_member_static.cc
index 32a179b7..73f797c6 100644
--- a/tests/usage/var_usage_class_member_static.cc
+++ b/tests/usage/var_usage_class_member_static.cc
@@ -26,7 +26,10 @@ OUTPUT:
       "short_name": "accept",
       "detailed_name": "void accept(int)",
       "declarations": [{
-          "spelling": "5:6-5:12"
+          "spelling": "5:6-5:12",
+          "extent": "5:1-5:17",
+          "content": "void accept(int)",
+          "param_spellings": ["5:16-5:16"]
         }],
       "callers": ["1@8:3-8:9"]
     }, {