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Improved handling of message call comments (#264)

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This commit is contained in:
Bartek Kryza
2024-04-30 00:06:42 +02:00
parent 6c6575bc7f
commit 4293a6cc79
11 changed files with 267 additions and 41 deletions
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36
src/common/visitor/translation_unit_visitor.h
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@@ -265,23 +265,29 @@ public:
* @param comment clang::RawComment pointer
* @param de Reference to clang::DiagnosticsEngine
* @param element Reference to element to be updated
* @return Comment with uml directives stripped from it
*/
void process_comment(const clang::RawComment *comment,
clang::DiagnosticsEngine &de,
[[maybe_unused]] std::string process_comment(
const clang::RawComment *comment, clang::DiagnosticsEngine &de,
clanguml::common::model::decorated_element &e)
{
if (comment != nullptr) {
auto [it, inserted] = processed_comments_.emplace(comment);
if (comment == nullptr)
return {};
if (!inserted)
return;
auto [it, inserted] = processed_comments_.emplace(comment);
// Process clang-uml decorators in the comments
// TODO: Refactor to use standard block comments processable by
// clang comments
e.add_decorators(decorators::parse(
comment->getFormattedText(source_manager_, de)));
}
if (!inserted)
return {};
// Process clang-uml decorators in the comments
// TODO: Refactor to use standard block comments processable by
// clang comments
const auto &[decorators, stripped_comment] =
decorators::parse(comment->getFormattedText(source_manager_, de));
e.add_decorators(decorators);
return stripped_comment;
}
/**
@@ -332,6 +338,12 @@ public:
*/
const ConfigT &config() const { return config_; }
protected:
std::set<const clang::RawComment *> &processed_comments()
{
return processed_comments_;
}
private:
// Reference to the output diagram model
DiagramT &diagram_;

25
src/decorators/decorators.cc
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@@ -187,10 +187,12 @@ std::shared_ptr<decorator> call::from_string(std::string_view c)
return res;
}
std::vector<std::shared_ptr<decorator>> parse(
std::pair<std::vector<std::shared_ptr<decorator>>, std::string> parse(
std::string documentation_block, const std::string &clanguml_tag)
{
std::vector<std::shared_ptr<decorator>> res;
std::string stripped_comment;
const std::string begin_tag{"@" + clanguml_tag};
const auto begin_tag_size = begin_tag.size();
@@ -202,12 +204,20 @@ std::vector<std::shared_ptr<decorator>> parse(
const std::string_view block_view{documentation_block};
auto pos = block_view.find("@" + clanguml_tag + "{");
if (pos == std::string::npos) {
// This comment had no uml directives
return {{}, util::trim(documentation_block)};
}
size_t last_end_pos{0};
while (pos < documentation_block.size()) {
auto c_begin = pos + begin_tag_size;
auto c_end = documentation_block.find('}', c_begin);
auto c_end = block_view.find('}', c_begin);
if (c_end == std::string::npos)
return res;
if (c_end == std::string::npos) {
return {res, util::trim(stripped_comment)};
}
auto com =
decorator::from_string(block_view.substr(c_begin + 1, c_end - 2));
@@ -215,10 +225,15 @@ std::vector<std::shared_ptr<decorator>> parse(
if (com)
res.emplace_back(std::move(com));
const auto in_between_length = pos - last_end_pos;
stripped_comment += block_view.substr(last_end_pos, in_between_length);
last_end_pos = pos + (c_end - c_begin + begin_tag_size + 1);
pos = block_view.find("@" + clanguml_tag + "{", c_end);
}
return res;
return {res, util::trim(stripped_comment)};
};
} // namespace clanguml::decorators

5
src/decorators/decorators.h
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@@ -156,9 +156,10 @@ struct call : public decorator {
*
* @param documentation_block Documentation block extracted from source code
* @param clanguml_tag Name of the clanguml tag (default `uml`)
* @return List of clang-uml decorators extracted from comment
* @return Pair of: a list of clang-uml decorators extracted from comment and
* a comment stripped of any uml directives
*/
std::vector<std::shared_ptr<decorator>> parse(
std::pair<std::vector<std::shared_ptr<decorator>>, std::string> parse(
std::string documentation_block, const std::string &clanguml_tag = "uml");
} // namespace decorators

6
src/sequence_diagram/model/message.cc
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@@ -59,7 +59,11 @@ const std::string &message::return_type() const { return return_type_; }
const std::optional<std::string> &message::comment() const { return comment_; }
void message::set_comment(std::string c) { comment_ = std::move(c); }
void message::set_comment(std::string c)
{
if (!c.empty())
comment_ = std::move(c);
}
void message::set_comment(const std::optional<std::string> &c)
{

31
src/sequence_diagram/visitor/translation_unit_visitor.cc
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@@ -1047,24 +1047,28 @@ bool translation_unit_visitor::VisitCallExpr(clang::CallExpr *expr)
set_source_location(*expr, m);
process_comment(clanguml::common::get_expression_raw_comment(
source_manager(), *context().get_ast_context(), expr),
context().get_ast_context()->getDiagnostics(), m);
const auto *raw_expr_comment = clanguml::common::get_expression_raw_comment(
source_manager(), *context().get_ast_context(), expr);
const auto stripped_comment = process_comment(
raw_expr_comment, context().get_ast_context()->getDiagnostics(), m);
if (m.skip())
return true;
auto generated_message_from_comment = generate_message_from_comment(m);
if (!generated_message_from_comment && !should_include(expr))
if (!generated_message_from_comment && !should_include(expr)) {
processed_comments().erase(raw_expr_comment);
return true;
}
if (context().is_expr_in_current_control_statement_condition(expr)) {
m.set_message_scope(common::model::message_scope_t::kCondition);
}
if (generated_message_from_comment) {
// Do nothing
LOG_DBG(
"Message for this call expression is taken from comment directive");
}
//
// Call to an overloaded operator
@@ -1148,11 +1152,7 @@ bool translation_unit_visitor::VisitCallExpr(clang::CallExpr *expr)
// Add message to diagram
if (m.from() > 0 && m.to() > 0) {
if (!generated_message_from_comment) {
auto expr_comment = get_expression_comment(source_manager(),
*context().get_ast_context(), context().caller_id(), expr);
m.set_comment(expr_comment);
}
m.set_comment(stripped_comment);
if (diagram().sequences().find(m.from()) ==
diagram().sequences().end()) {
@@ -2167,10 +2167,17 @@ std::optional<std::string> translation_unit_visitor::get_expression_comment(
if (raw_comment == nullptr)
return {};
if (!processed_comments_.emplace(caller_id, raw_comment).second) {
if (!processed_comments_by_caller_id_.emplace(caller_id, raw_comment)
.second) {
return {};
}
return raw_comment->getFormattedText(sm, sm.getDiagnostics());
const auto &[decorators, stripped_comment] = decorators::parse(
raw_comment->getFormattedText(sm, sm.getDiagnostics()));
if (stripped_comment.empty())
return {};
return stripped_comment;
}
} // namespace clanguml::sequence_diagram::visitor

2
src/sequence_diagram/visitor/translation_unit_visitor.h
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@@ -511,7 +511,7 @@ private:
already_visited_in_static_declaration_{};
mutable std::set<std::pair<int64_t, const clang::RawComment *>>
processed_comments_;
processed_comments_by_caller_id_;
template_builder_t template_builder_;
};

14
tests/t20048/.clang-uml Normal file
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@@ -0,0 +1,14 @@
add_compile_flags:
- -fparse-all-comments
diagrams:
t20048_sequence:
type: sequence
glob:
- t20048.cc
generate_message_comments: true
include:
namespaces:
- clanguml::t20048
using_namespace: clanguml::t20048
from:
- function: "clanguml::t20048::tmain()"

40
tests/t20048/t20048.cc Normal file
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@@ -0,0 +1,40 @@
#include <future>
namespace clanguml {
namespace t20048 {
int a1(int x) { return x + 1; }
int a2(int x) { return x + 2; }
int a3(int x) { return x + 3; }
int a4(int x) { return x + 4; }
int a5(int x) { return x + 5; }
int a6(int x) { return x + 6; }
int a7(int x) { return x + 7; }
int tmain()
{
// a1() adds `1` to the result of a2()
auto res = a1(a2(a3(0)));
// This lambda calls a4() which adds `4` to it's argument
res = [](auto &&x) { return a4(x); }(0);
// a5() adds `1` to the result of a6()
res = a5(
// a6() adds `1` to its argument
a6(0));
// a7() is called via add std::async
// \uml{call clanguml::t20048::a7(int)}
res = std::async(a7, 10).get();
return 0;
}
}
}

91
tests/t20048/test_case.h Normal file
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@@ -0,0 +1,91 @@
/**
* tests/t20048/test_case.h
*
* Copyright (c) 2021-2024 Bartek Kryza <bkryza@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
TEST_CASE("t20048", "[test-case][sequence]")
{
auto [config, db] = load_config("t20048");
auto diagram = config.diagrams["t20048_sequence"];
REQUIRE(diagram->name == "t20048_sequence");
auto model = generate_sequence_diagram(*db, diagram);
REQUIRE(model->name() == "t20048_sequence");
{
auto src = generate_sequence_puml(diagram, *model);
AliasMatcher _A(src);
REQUIRE_THAT(src, StartsWith("@startuml"));
REQUIRE_THAT(src, EndsWith("@enduml\n"));
// Check if all calls exist
REQUIRE_THAT(src, HasCall(_A("tmain()"), _A("a3(int)"), ""));
REQUIRE_THAT(src, HasCall(_A("tmain()"), _A("a2(int)"), ""));
REQUIRE_THAT(src, HasCall(_A("tmain()"), _A("a1(int)"), ""));
REQUIRE_THAT(src, HasCall(_A("tmain()"), _A("a5(int)"), ""));
REQUIRE_THAT(src, HasCall(_A("tmain()"), _A("a6(int)"), ""));
REQUIRE_THAT(src, HasCall(_A("tmain()"), _A("a7(int)"), ""));
REQUIRE_THAT(src,
HasCall(_A("tmain()"), _A("tmain()::(lambda t20048.cc:26:11)"),
"operator()()"));
REQUIRE_THAT(src,
HasCall(
_A("tmain()::(lambda t20048.cc:26:11)"), _A("a4(int)"), ""));
REQUIRE_THAT(src,
HasMessageComment(_A("tmain()"),
"a1\\(\\) adds `1` to the result\\n"
"of a2\\(\\)"));
REQUIRE_THAT(src,
HasMessageComment(_A("tmain()"),
"This lambda calls a4\\(\\) which\\n"
"adds `4` to it's argument"));
REQUIRE_THAT(src,
HasMessageComment(
_A("tmain()"), "a6\\(\\) adds `1` to its argument"));
REQUIRE_THAT(src,
HasMessageComment(_A("tmain()"),
"a5\\(\\) adds `1` to the result\\n"
"of a6\\(\\)"));
REQUIRE_THAT(src,
HasMessageComment(
_A("tmain()"), "a7\\(\\) is called via add std::async"));
save_puml(config.output_directory(), diagram->name + ".puml", src);
}
{
auto j = generate_sequence_json(diagram, *model);
using namespace json;
save_json(config.output_directory(), diagram->name + ".json", j);
}
{
auto src = generate_sequence_mermaid(diagram, *model);
mermaid::AliasMatcher _A(src);
using mermaid::IsClass;
save_mermaid(config.output_directory(), diagram->name + ".mmd", src);
}
}

1
tests/test_cases.cc
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@@ -474,6 +474,7 @@ using namespace clanguml::test::matchers;
#include "t20045/test_case.h"
#include "t20046/test_case.h"
#include "t20047/test_case.h"
#include "t20048/test_case.h"
///
/// Package diagram tests

57
tests/test_decorator_parser.cc
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@@ -20,6 +20,7 @@
#include "decorators/decorators.h"
#include "catch.h"
#include "util/util.h"
TEST_CASE("Test decorator parser on regular comment", "[unit-test]")
{
@@ -35,9 +36,10 @@ TEST_CASE("Test decorator parser on regular comment", "[unit-test]")
using namespace clanguml::decorators;
auto decorators = parse(comment);
auto [decorators, stripped] = parse(comment);
CHECK(decorators.empty());
CHECK(clanguml::util::trim(comment) == stripped);
}
TEST_CASE("Test decorator parser on note", "[unit-test]")
@@ -62,7 +64,7 @@ TEST_CASE("Test decorator parser on note", "[unit-test]")
using namespace clanguml::decorators;
auto decorators = parse(comment);
auto [decorators, stripped] = parse(comment);
CHECK(decorators.size() == 4);
@@ -86,6 +88,15 @@ TEST_CASE("Test decorator parser on note", "[unit-test]")
CHECK(n4);
CHECK(n4->position == "left");
CHECK(n4->text == "This is a comment");
CHECK(stripped == R"(\brief This is a comment.
This is a longer comment.
\
\param a int an int
\param b float a float)");
}
TEST_CASE("Test decorator parser on note with custom tag", "[unit-test]")
@@ -110,7 +121,7 @@ TEST_CASE("Test decorator parser on note with custom tag", "[unit-test]")
using namespace clanguml::decorators;
auto decorators = parse(comment, "clanguml");
auto [decorators, stripped] = parse(comment, "clanguml");
CHECK(decorators.size() == 4);
@@ -134,6 +145,15 @@ TEST_CASE("Test decorator parser on note with custom tag", "[unit-test]")
CHECK(n4);
CHECK(n4->position == "left");
CHECK(n4->text == "This is a comment");
CHECK(stripped == R"(\brief This is a comment.
This is a longer comment.
\
\param a int an int
\param b float a float)");
}
TEST_CASE("Test decorator parser on style", "[unit-test]")
@@ -144,7 +164,7 @@ TEST_CASE("Test decorator parser on style", "[unit-test]")
using namespace clanguml::decorators;
auto decorators = parse(comment);
auto [decorators, stripped] = parse(comment);
CHECK(decorators.size() == 1);
@@ -152,6 +172,7 @@ TEST_CASE("Test decorator parser on style", "[unit-test]")
CHECK(n1);
CHECK(n1->spec == "#green,dashed,thickness=4");
CHECK(stripped.empty());
}
TEST_CASE("Test decorator parser on aggregation", "[unit-test]")
@@ -162,7 +183,7 @@ TEST_CASE("Test decorator parser on aggregation", "[unit-test]")
using namespace clanguml::decorators;
auto decorators = parse(comment);
auto [decorators, stripped] = parse(comment);
CHECK(decorators.size() == 1);
@@ -170,6 +191,7 @@ TEST_CASE("Test decorator parser on aggregation", "[unit-test]")
CHECK(n1);
CHECK(n1->multiplicity == "0..1:0..*");
CHECK(stripped.empty());
}
TEST_CASE("Test decorator parser on skip", "[unit-test]")
@@ -180,13 +202,14 @@ TEST_CASE("Test decorator parser on skip", "[unit-test]")
using namespace clanguml::decorators;
auto decorators = parse(comment);
auto [decorators, stripped] = parse(comment);
CHECK(decorators.size() == 1);
auto n1 = std::dynamic_pointer_cast<skip>(decorators.at(0));
CHECK(n1);
CHECK(stripped.empty());
}
TEST_CASE("Test decorator parser on skiprelationship", "[unit-test]")
@@ -197,13 +220,14 @@ TEST_CASE("Test decorator parser on skiprelationship", "[unit-test]")
using namespace clanguml::decorators;
auto decorators = parse(comment);
auto [decorators, stripped] = parse(comment);
CHECK(decorators.size() == 1);
auto n1 = std::dynamic_pointer_cast<skip_relationship>(decorators.at(0));
CHECK(n1);
CHECK(stripped.empty());
}
TEST_CASE("Test decorator parser on diagram scope", "[unit-test]")
@@ -215,7 +239,7 @@ TEST_CASE("Test decorator parser on diagram scope", "[unit-test]")
using namespace clanguml::decorators;
auto decorators = parse(comment);
auto [decorators, stripped] = parse(comment);
CHECK(decorators.size() == 1);
@@ -232,4 +256,21 @@ TEST_CASE("Test decorator parser on diagram scope", "[unit-test]")
CHECK(n1->applies_to_diagram("diagram2"));
CHECK(!n1->applies_to_diagram("diagram4"));
CHECK(stripped.empty());
}
TEST_CASE("Test invalid comment - unterminated curly brace", "[unit-test]")
{
std::string comment = R"(
Test test test
\uml{call clanguml::test:aa()
)";
using namespace clanguml::decorators;
auto [decorators, stripped] = parse(comment);
CHECK(decorators.size() == 0);
CHECK(stripped.empty());
}