template add-function arguments

docs/cmake-toml.md

@@ -302,6 +302,7 @@ condition = "MYPROJECT_BUILD_EXAMPLES"
 type = "executable"
 link-libraries = ["myproject::mylib"]
 add-function = ""
+add-arguments = ["myoption"]
 pass-sources = false
 
 # Properties from the template are merged with the ones here
@@ -313,6 +314,7 @@ sources = ["src/myexample.cpp"]
 The properties declared on a `template` are the same as the ones you use for targets. The only exceptions are:
 
 - `add-function`: Specifies a custom add function. Projects like [pybind11](https://pybind11.readthedocs.io/en/stable/cmake/index.html#new-findpython-mode) have their own `add_xxx` function, which you can specify here.
+- `add-arguments`: Arguments to pass to the `add-function` before the list of sources. See [cmake_parse_arguments](https://cmake.org/cmake/help/latest/command/cmake_parse_arguments.html) for more details.
 - `pass-sources`: Pass sources directly to the add function instead of using `target_sources`.
 
 ## Tests and installation (unfinished)

include/project_parser.hpp

@@ -118,6 +118,7 @@ struct Target {
 struct Template {
     Target outline;
     std::string add_function;
+    std::vector<std::string> add_arguments;
     bool pass_sources_to_add_function = false;
 };
 

src/cmake_generator.cpp

@@ -1372,12 +1372,11 @@ void generate_cmake(const char *path, const parser::Project *parent_project) {
             // Handle custom add commands from templates.
             if (tmplate != nullptr && !tmplate->add_function.empty()) {
                 add_command = tmplate->add_function;
-                target_type_string = ""; // TODO: let templates supply options to the add_command here?
 
                 if (tmplate->pass_sources_to_add_function) {
-                    cmd(add_command)(target.name, target_type_string, "${" + sources_var + "}");
+                    cmd(add_command)(target.name, tmplate->add_arguments, "${" + sources_var + "}");
                 } else {
-                    cmd(add_command)(target.name, target_type_string).endl();
+                    cmd(add_command)(target.name, tmplate->add_arguments).endl();
                     if (has_sources) {
                         cmd("target_sources")(target.name, target_type == parser::target_interface ? "INTERFACE" : "PRIVATE",
                                               "${" + sources_var + "}");

src/project_parser.cpp

@@ -785,6 +785,7 @@ Project::Project(const Project *parent, const std::string &path, bool build) : p
             tmplate.outline = parse_target(name, t, true);
 
             t.optional("add-function", tmplate.add_function);
+            t.optional("add-arguments", tmplate.add_arguments);
             t.optional("pass-sources-to-add-function", tmplate.pass_sources_to_add_function);
             t.optional("pass-sources", tmplate.pass_sources_to_add_function);