Refactored command to decorators

src/uml/decorators.cc

@@ -0,0 +1,164 @@
+/**
+ * src/uml/decorators.cc
+ *
+ * Copyright (c) 2021 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.
+ */
+#include "decorators.h"
+
+#include "util/util.h"
+
+#include <string>
+#include <string_view>
+
+namespace clanguml {
+namespace decorators {
+
+const std::string note::label = "note";
+const std::string skip::label = "skip";
+const std::string skip_relationship::label = "skiprelationship";
+const std::string style::label = "style";
+const std::string aggregation::label = "aggregation";
+
+std::shared_ptr<decorator> decorator::from_string(std::string_view c)
+{
+    if (c.find(note::label) == 0) {
+        return note::from_string(c);
+    }
+    else if (c.find(skip::label) == 0) {
+        return skip::from_string(c);
+    }
+    else if (c.find(skip_relationship::label) == 0) {
+        return skip_relationship::from_string(c);
+    }
+    else if (c.find(style::label) == 0) {
+        return style::from_string(c);
+    }
+    else if (c.find(aggregation::label) == 0) {
+        return aggregation::from_string(c);
+    }
+
+    return {};
+}
+
+std::shared_ptr<decorator> note::from_string(std::string_view c)
+{
+    auto res = std::make_shared<note>();
+    auto it = c.begin();
+    std::advance(it, note::label.size());
+
+    if (*it != '[')
+        return {};
+
+    std::advance(it, 1);
+
+    auto pos = std::distance(c.begin(), it);
+    res->position = c.substr(pos, c.find("]", pos) - pos);
+
+    std::advance(it, res->position.size() + 1);
+
+    pos = std::distance(c.begin(), it);
+    res->text = c.substr(pos, c.find("}", pos) - pos);
+
+    res->position = util::trim(res->position);
+    res->text = util::trim(res->text);
+
+    return res;
+}
+
+std::shared_ptr<decorator> skip::from_string(std::string_view c)
+{
+    auto res = std::make_shared<skip>();
+    return res;
+}
+
+std::shared_ptr<decorator> skip_relationship::from_string(std::string_view c)
+{
+    auto res = std::make_shared<skip_relationship>();
+    return res;
+}
+
+std::shared_ptr<decorator> style::from_string(std::string_view c)
+{
+    auto res = std::make_shared<style>();
+    auto it = c.begin();
+    std::advance(it, style::label.size());
+
+    if (*it != '[')
+        return {};
+
+    std::advance(it, 1);
+
+    auto pos = std::distance(c.begin(), it);
+    res->spec = c.substr(pos, c.find("]", pos) - pos);
+
+    res->spec = util::trim(res->spec);
+
+    return res;
+}
+
+std::shared_ptr<decorator> aggregation::from_string(std::string_view c)
+{
+    auto res = std::make_shared<aggregation>();
+    auto it = c.begin();
+    std::advance(it, aggregation::label.size());
+
+    if (*it != '[')
+        return {};
+
+    std::advance(it, 1);
+
+    auto pos = std::distance(c.begin(), it);
+    res->multiplicity = c.substr(pos, c.find("]", pos) - pos);
+
+    res->multiplicity = util::trim(res->multiplicity);
+
+    return res;
+}
+
+std::vector<std::shared_ptr<decorator>> parse(std::string documentation_block)
+{
+    std::vector<std::shared_ptr<decorator>> res;
+    const std::string begin_tag{"@clanguml"};
+    const auto begin_tag_size = begin_tag.size();
+
+    // First replace all \clanguml occurences with @clanguml
+    util::replace_all(documentation_block, "\\clanguml", "@clanguml");
+    documentation_block = util::trim(documentation_block);
+
+    std::string_view block_view{documentation_block};
+
+    auto pos = block_view.find("@clanguml{");
+    while (pos < documentation_block.size()) {
+        auto c_begin = pos + begin_tag_size;
+        auto c_end = documentation_block.find("}", c_begin);
+
+        if (c_end == std::string::npos)
+            return res;
+
+        auto com =
+            decorator::from_string(block_view.substr(c_begin + 1, c_end - 2));
+
+        if (com)
+            res.emplace_back(std::move(com));
+
+        pos = block_view.find("@clanguml{", c_end);
+    }
+
+    return res;
+};
+
+} // namespace decorators
+} // namespace clanguml
+