utilities_gamedev/gdc_converter/gdc_class_bind_generator.gd

423 lines
11 KiB
GDScript

tool
extends Reference
class GDSStaticClassParser:
var scope_data : String = ""
var raw_scope_data : String = ""
var static_methods : PoolStringArray = PoolStringArray()
func convert_to_string(current_scope_level : int = 0) -> String:
var s : String = scope_data + "- (" + raw_scope_data + ")---GDSScope---\n"
for m in static_methods:
s += m + "\n"
s += "\n"
return s
func get_cpp_header_string() -> String:
var s : String = ""
s += "class _" + scope_data + " : public Object {\n"
s += " GDCLASS(" + scope_data + ", Object);\n\n"
s += " public:\n"
s += "\n"
for m in static_methods:
s += " " + transform_method_to_cpp(m) + ";\n"
s += "\n"
s += " static _" + scope_data + "* get_singleton();\n"
s += "\n"
s += " " + scope_data + "();\n"
s += " ~" + scope_data + "();\n"
s += "\n"
s += " protected:\n"
s += " static void _bind_methods();\n"
s += "\n"
s += " static _" + scope_data + "* self;\n"
s += "\n"
s += "};"
s += "\n"
return s
func get_cpp_impl_string(current_scope_level : int = 0, owner_class_name : String = "") -> String:
var s : String = ""
s += "\n"
for m in static_methods:
#scope_data
s += transform_method_to_cpp(m, "_" + scope_data + "::", false) + " {\n"
s += " " + transform_method_to_cpp_call(m, scope_data + "::") + ";\n"
s += "}\n\n"
s += "_" + scope_data + "* _" + scope_data + "::get_singleton() {\n"
s += " return self;\n"
s += "}\n\n"
s += "\n"
s += "_" + scope_data + "::_" + scope_data + "() {\n"
s += " self = this;\n"
s += "}\n\n"
s += "_" + scope_data + "::~_" + scope_data + "() {\n"
s += " self = nullptr;\n"
s += "}\n\n"
s += "\n"
s += "static void _" + scope_data + "::_bind_methods() {\n"
s += create_cpp_binds_string()
s += "}\n\n"
s += "_" + scope_data + "* _" + scope_data + "::self = nullptr;\n"
return s
func create_cpp_binds_string() -> String:
var s : String = ""
for m in static_methods:
s += " " + transform_method_to_cpp_binding(m, "_" + scope_data) + ";\n"
s += "\n"
return s
func transform_method_to_cpp(func_raw_data : String, name_prefix : String = "", default_params : bool = true) -> String:
var func_data : String = func_raw_data
var func_ret_type : String = "void"
var indx : int = func_raw_data.find(" -> ")
if indx != -1:
func_ret_type = func_raw_data.substr(indx + 4)
func_data = func_raw_data.substr(0, indx)
var func_final : String = func_ret_type + " "
indx = func_data.find("(")
var func_name : String = func_data.substr(0, indx)
func_final += name_prefix + func_name + "("
var func_params : String = func_data.substr(indx + 1, func_data.length() - indx - 2)
if func_params != "":
var params : PoolStringArray = func_params.split(",", false)
for i in range(params.size()):
var p : String = params[i]
var default_value_indx : int = p.find("=")
var default_value : String
if default_value_indx != -1:
default_value = p.substr(default_value_indx + 1).strip_edges()
p = p.substr(0, default_value_indx).strip_edges()
var type_indx : int = p.find(":")
if type_indx != -1:
var param_type : String = p.substr(type_indx + 1).strip_edges()
p = p.substr(0, type_indx).strip_edges()
if param_type == "int" || param_type == "float" || param_type == "bool" || param_type == "RID":
func_final += "const " + param_type + " "
else:
func_final += "const " + param_type + " &"
else:
func_final += "const Variant &"
func_final += p
if default_params && default_value_indx != -1:
func_final += " = " + default_value
if i + 1 < params.size():
func_final += ", "
func_final += ")"
return func_final
func transform_method_to_cpp_call(func_raw_data : String, name_prefix : String = "") -> String:
var func_data : String = func_raw_data
var func_ret_type : String = "void"
var indx : int = func_raw_data.find(" -> ")
if indx != -1:
func_ret_type = func_raw_data.substr(indx + 4)
func_data = func_raw_data.substr(0, indx)
var func_final : String = ""
if func_ret_type != "void":
func_final += "return "
indx = func_data.find("(")
var func_name : String = func_data.substr(0, indx)
func_final += name_prefix + func_name + "("
var func_params : String = func_data.substr(indx + 1, func_data.length() - indx - 2)
if func_params != "":
var params : PoolStringArray = func_params.split(",", false)
for i in range(params.size()):
var p : String = params[i]
var default_value_indx : int = p.find("=")
var default_value : String
if default_value_indx != -1:
default_value = p.substr(default_value_indx + 1).strip_edges()
p = p.substr(0, default_value_indx).strip_edges()
var type_indx : int = p.find(":")
if type_indx != -1:
var param_type : String = p.substr(type_indx + 1).strip_edges()
p = p.substr(0, type_indx).strip_edges()
func_final += p
if i + 1 < params.size():
func_final += ", "
func_final += ")"
return func_final
func transform_method_to_cpp_binding(func_raw_data : String, name_prefix : String) -> String:
var func_data : String = func_raw_data
var func_ret_type : String = "void"
var indx : int = func_raw_data.find(" -> ")
if indx != -1:
func_ret_type = func_raw_data.substr(indx + 4)
func_data = func_raw_data.substr(0, indx)
var ret_final : String = "ClassDB::bind_method(D_METHOD(\""
indx = func_data.find("(")
var func_name : String = func_data.substr(0, indx)
ret_final += func_name + "\""
var func_params : String = func_data.substr(indx + 1, func_data.length() - indx - 2)
var default_values : PoolStringArray = PoolStringArray()
if func_params != "":
var params : PoolStringArray = func_params.split(",", false)
for i in range(params.size()):
ret_final += ", "
var p : String = params[i]
var default_value_indx : int = p.find("=")
var default_value : String
if default_value_indx != -1:
default_value = p.substr(default_value_indx + 1).strip_edges()
p = p.substr(0, default_value_indx).strip_edges()
default_values.push_back(default_value)
var type_indx : int = p.find(":")
if type_indx != -1:
var param_type : String = p.substr(type_indx + 1).strip_edges()
p = p.substr(0, type_indx).strip_edges()
ret_final += "\"" + p + "\""
ret_final += "), &" + name_prefix + "::" + func_name
for i in range(default_values.size()):
ret_final += ", " + default_values[i]
ret_final += ");"
return ret_final
func camel_case_scope_data() -> void:
scope_data = camel_case_name(scope_data)
func camel_case_name(cname : String) -> String:
var ret : String = ""
var next_upper : bool = true
for i in range(cname.length()):
if cname[i] == "_":
next_upper = true
continue
if next_upper:
ret += cname[i].to_upper()
next_upper = false
else:
ret += cname[i]
return ret
func _to_string():
return convert_to_string()
func parse(contentsstr : String, file_name : String) -> void:
raw_scope_data = file_name
scope_data = file_name.get_file().trim_suffix(".gd")
camel_case_scope_data()
var contents : PoolStringArray = split_preprocess_content(contentsstr)
for current_index in range(contents.size()):
var cl : String = contents[current_index]
if cl.begins_with("class_name "):
raw_scope_data = cl
scope_data = cl.trim_prefix("class_name ")
continue
if cl.begins_with("#"):
continue
var clstripped : String = cl.strip_edges(true, false)
if clstripped.begins_with("static func "):
static_methods.push_back(clstripped.trim_prefix("static func ").trim_suffix(":"))
func split_preprocess_content(contents : String) -> PoolStringArray:
var ret : PoolStringArray = PoolStringArray()
contents = contents.replace("\r\n", "\n")
var sp : PoolStringArray = contents.split("\n")
var pl : String = ""
var accum : bool = false
for i in range(sp.size()):
var l : String = sp[i]
l = l.strip_edges(false, true)
var lfstrip : String = l.strip_edges(true, false)
if lfstrip == "":
continue
if lfstrip.begins_with("#"):
ret.append(lfstrip)
continue
if lfstrip.begins_with("export"):
var indx = lfstrip.find("var")
var expstr : String = lfstrip.substr(0, indx)
ret.append("#" + expstr)
l = l.replace(expstr, "")
var setget_indx = l.find(" setget ")
if setget_indx != -1:
var setget_str : String = l.substr(setget_indx)
ret.append("#" + setget_str)
l = l.substr(0, setget_indx).strip_edges(false, true)
var hash_symbol_index = l.find("#")
if hash_symbol_index != -1:
var comment_str : String = l.substr(hash_symbol_index)
ret.append(comment_str)
l = l.substr(0, hash_symbol_index).strip_edges(false, true)
if l.ends_with("\\"):
if !accum:
accum = true
pl = l
else:
pl += l.substr(0, l.length() - 1).strip_edges()
else:
if accum:
accum = false
ret.append(pl)
pl = ""
else:
ret.append(l)
return ret
func get_final_cpp_header_string(file_name : String) -> String:
var include_guard_name : String = file_name.get_file()
include_guard_name = include_guard_name.to_upper()
include_guard_name = include_guard_name.trim_suffix(".GD")
include_guard_name += "_BIND_H"
var s : String = "#ifndef " + include_guard_name + "\n"
s += "#define " + include_guard_name + "\n"
s += "\n\n"
s += get_cpp_header_string()
s += "\n\n"
s += "#endif"
s += "\n"
s = s.replace(";;", ";")
return s
func get_final_cpp_impl_string(file_name : String) -> String:
var include_name : String = file_name.get_file()
include_name = include_name.to_lower()
include_name = include_name.trim_suffix(".gd")
include_name += "_bind.h"
var s : String = "\n"
s += "#include \"" + include_name + "\"\n"
s += "\n\n"
s += get_cpp_impl_string()
s += "\n\n"
s = s.replace(";;", ";")
return s
func process_file(file_name : String) -> void:
var file : File = File.new()
file.open(file_name, File.READ)
var contents : String = file.get_as_text()
file.close()
var parser : GDSStaticClassParser = GDSStaticClassParser.new()
parser.parse(contents, file_name)
#print(parser)
#print(parser.get_cpp_header_string(file_name))
#print(parser.get_cpp_impl_string(file_name))
var save_base_file_path : String = file_name.get_base_dir()
var save_base_file_name : String = file_name.get_file().to_lower().trim_suffix(".gd")
var header_file : String = save_base_file_path + "/" + save_base_file_name + "_bind.h"
var impl_file : String = save_base_file_path + "/" + save_base_file_name + "_bind.cpp"
var header_data : String = parser.get_final_cpp_header_string(file_name)
var impl_data : String = parser.get_final_cpp_impl_string(file_name)
file.open(header_file, File.WRITE)
file.store_string(header_data)
file.close()
file.open(impl_file, File.WRITE)
file.store_string(impl_data)
file.close()