some more early thoughts about syntax

src/CMakeLists.txt

@@ -1,10 +1,12 @@
 set(SOURCES
     main.cpp
     project.cpp
+    dependency.cpp
 )
 
 set(HEADERS
     project.h
+    dependency.cpp
 )
 
 target_sources(${PROJECT_NAME} PRIVATE ${SOURCES})

src/dependency.cpp

@@ -0,0 +1,25 @@
+#include "dependency.h"
+
+Dependency::Dependency(
+    const std::string& path,
+    Type type,
+    const std::optional<std::string>& name,
+    const std::optional<std::string>& version
+):
+    path(path),
+    type(type),
+    name(name),
+    version(version)
+{}
+
+Dependency::Type Dependency::getType() const {
+    return type;
+}
+
+std::optional<std::string> Dependency::getName() const {
+    return name;
+}
+
+std::optional<std::string> Dependency::getVersion() const {
+    return version;
+}

src/dependency.h

@@ -0,0 +1,31 @@
+#pragma once
+
+#include <string>
+#include <optional>
+
+class Dependency {
+public:
+    enum class Type {
+        automatic,
+        simple,
+        mason
+    };
+
+    Dependency(
+        const std::string& path,
+        Type type = Type::automatic,
+        const std::optional<std::string>& name = std::nullopt,
+        const std::optional<std::string>& version = std::nullopt
+    );
+
+    Type getType() const;
+    std::optional<std::string> getName() const;
+    std::optional<std::string> getVersion() const;
+
+    const std::string path;
+
+private:
+    Type type;
+    std::optional<std::string> name;
+    std::optional<std::string> version;
+};

src/main.cpp

@@ -21,6 +21,7 @@ int main(int argc, char *argv[]) {
         return -1;
     } else {
         std::cout << "successfully parsed project " << root.getName() << std::endl;
+        std::cout << "dependencies count is " << root.dependenciesCount() << std::endl;
     }
 
 

src/project.cpp

@@ -1,15 +1,26 @@
 #include "project.h"
 
-#include <nlohmann/json.hpp>
 #include <string_view>
 #include <exception>
 
+using json = nlohmann::json;
+
 constexpr std::string_view entry("mason.json");
 
+std::map<std::string, Dependency::Type> types({
+    {"simple", Dependency::Type::simple},
+    {"none", Dependency::Type::simple},
+    {"mason", Dependency::Type::mason},
+    {"auto", Dependency::Type::automatic},
+    {"automatic", Dependency::Type::automatic}
+});
+
 Project::Project(const std::filesystem::path& location):
     location(location),
     status(Status::unknown),
-    name()
+    name(),
+    logStorage(),
+    dependencies()
 {}
 
 bool Project::read() {
@@ -32,9 +43,17 @@ bool Project::read() {
         return false;
     }
 
+    json data;
     try {
-        nlohmann::json data = nlohmann::json::parse(file);
+        data = json::parse(file);
-        name = data.at("name");
+    } catch (const json::exception& e) {
+        log(e.what());
+        status = Status::error;
+        return false;
+    }
+
+    try {
+        parse(data);
     } catch (const std::exception& e) {
         log(e.what());
         status = Status::error;
@@ -44,6 +63,74 @@ bool Project::read() {
     return true;
 }
 
+void Project::parse(const json& data) {
+    const json& nm = data.at("name");
+    if (!nm.is_string())
+        throw 1;
+
+    name = nm;
+
+    const json& dpd = data.at("dependencies");
+    if (!dpd.is_array())
+        throw 1;
+
+    for (const json& dep : dpd) {
+        switch (dep.type()) {
+            case json::value_t::string:
+                createDepencencyFromString(dep);
+                break;
+            case json::value_t::object:
+                createDepencencyFromObject(dep);
+                break;
+            default:
+                throw 1;
+        }
+    }
+}
+
+void Project::createDepencencyFromString(const std::string& entry) {
+    dependencies.emplace(entry, entry);
+}
+
+void Project::createDepencencyFromObject(const nlohmann::json& entry) {
+    std::string url;
+    json::const_iterator itr = entry.find("url");
+    if (itr == entry.end()) {
+        itr = entry.find("path");
+        if (itr == entry.end())
+            throw 1;
+    }
+    if (!itr->is_string())
+        throw 1;
+
+    url = *itr;
+
+    std::optional<std::string> name = std::nullopt;
+    itr = entry.find("name");
+    if (itr != entry.end() && itr->is_string())
+        name = *itr;
+
+    std::optional<std::string> version = std::nullopt;
+    itr = entry.find("version");
+    if (itr != entry.end() && itr->is_string())
+        version = *itr;
+
+    Dependency::Type type = Dependency::Type::automatic;
+    itr = entry.find("type");
+    if (itr != entry.end() && itr->is_string()) {
+        std::map<std::string, Dependency::Type>::const_iterator titr = types.find(*itr);
+        if (titr != types.end())
+            type = titr->second;
+    }
+
+    dependencies.emplace(url, Dependency{url, type, name, version});
+}
+
+uint32_t Project::dependenciesCount() const {
+    return dependencies.size();
+}
+
+
 void Project::log(const std::string& message) const {
     logStorage.emplace_back(message);
 }

src/project.h

@@ -4,6 +4,12 @@
 #include <string>
 #include <fstream>
 #include <list>
+#include <map>
+#include <stdint.h>
+
+#include <nlohmann/json.hpp>
+
+#include "dependency.h"
 
 class Project {
 public:
@@ -20,14 +26,19 @@ public:
     Status getStatus() const;
     Log getLog() const;
     std::string getName() const;
+    uint32_t dependenciesCount() const;
 
 private:
     void log(const std::string& message) const;
+    void parse(const nlohmann::json& json);
+    void createDepencencyFromString(const std::string& entry);
+    void createDepencencyFromObject(const nlohmann::json& entry);
 
 private:
     std::filesystem::path location;
     Status status;
     std::string name;
     mutable Log logStorage;
+    std::map<std::string, Dependency> dependencies;
 
 };

test/mason.json

@@ -1,4 +1,12 @@
 {
     "name" : "test",
-    "version" : "0.0.1"
+    "version" : "0.0.1",
+    "dependencies" : [
+        "somePath",
+        "https://git.macaw.me/blue/mason.git",
+        {
+            "name" : "aProject",
+            "path" : "https://nowhere.to"
+        }
+    ]
 }