rewrote binding generator in python

pull/8/head
Karroffel 2017-05-12 21:53:07 +02:00
parent 3969bcf078
commit cf30b0f39d
47 changed files with 650 additions and 812 deletions

9
.gitignore vendored
View File

@ -1,7 +1,8 @@
include/godot_cpp/*.hpp
include/godot_cpp/impl/
include/godot.h
include/godot
src/*.cpp
include/*.hpp
*.os
*.so
*.obj
*.pyc
*.json
bin

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@ -3,9 +3,11 @@ import os, subprocess
# Local dependency paths, adapt them to your setup
godot_headers_path = "../../godot_headers/"
godot_bin_path = "../../godot_fork/bin/"
godot_lib_path = "../../godot_fork/bin/"
godot_headers_path = "../godot_headers/"
godot_bin_path = "../godot_fork/bin/"
# for windows
godot_lib_path = "../godot_fork/bin/"
env = Environment()
@ -30,7 +32,7 @@ if target == "core":
if platform == "linux":
env.Append(CCFLAGS = ['-g','-O3', '-std=c++14'])
env.Append(CPPPATH=['.', godot_headers_path])
env.Append(CPPPATH=['include/core', godot_headers_path])
if platform == "windows":
env.Append(LIBS=[godot_name + '.lib'])
@ -39,9 +41,9 @@ if target == "core":
env.Append(CPPFLAGS=['-D_GD_CPP_CORE_API_IMPL'])
sources = []
add_sources(sources, "godot_cpp/core")
add_sources(sources, "src/core")
library = env.SharedLibrary(target='godot_cpp_core', source=sources)
library = env.SharedLibrary(target='bin/godot_cpp_core', source=sources)
Default(library)
@ -61,16 +63,13 @@ elif target == "bindings":
subprocess.call([godot_executable, '--gdnative-generate-json-api', json_api_file])
binding_generator_executable = '../binding_generator/target/debug/binding_generator'
if platform == "windows":
binding_generator_executable += ".exe"
# actually create the bindings here
# TODO Should that be the job of the generator?
if not os.path.isdir('godot_cpp/impl'):
os.mkdir('godot_cpp/impl')
import binding_generator
binding_generator.generate_bindings(json_api_file)
# Note: the binding generator should have been built before
subprocess.call([binding_generator_executable, json_api_file, 'godot_cpp/'])
if platform == "linux":
if env["CXX"] == "clang++":
@ -80,20 +79,20 @@ elif target == "bindings":
env.Append(CCFLAGS = ['-g','-O3', '-std=c++14'])
env.Append(LINKFLAGS = ['-Wl,-R,\'$$ORIGIN\''])
env.Append(CPPPATH=['.', godot_headers_path, './godot_cpp'])
env.Append(CPPPATH=['.', godot_headers_path, 'include', 'include/core'])
if platform == "windows":
env.Append(LIBS=[godot_name])
env.Append(LIBPATH=[godot_lib_path])
env.Append(LIBS=['godot_cpp_core'])
env.Append(LIBPATH=['.'])
env.Append(LIBPATH=['bin'])
env.Append(CPPFLAGS=['-D_GD_CPP_BINDING_IMPL'])
sources = []
add_sources(sources, "godot_cpp/impl/")
add_sources(sources, "src")
library = env.SharedLibrary(target='godot_cpp_bindings', source=sources)
library = env.SharedLibrary(target='bin/godot_cpp_bindings', source=sources)
Default(library)

623
binding_generator.py Normal file
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@ -0,0 +1,623 @@
#!python
import json
# comment.
def generate_bindings(path):
classes = json.load(open(path))
icalls = set()
for c in classes:
# print c['name']
used_classes = get_used_classes(c)
header = generate_class_header(used_classes, c)
impl = generate_class_implementation(icalls, used_classes, c)
header_file = open("include/" + strip_name(c["name"]) + ".hpp", "w+")
header_file.write(header)
source_file = open("src/" + strip_name(c["name"]) + ".cpp", "w+")
source_file.write(impl)
icall_header_file = open("src/__icalls.hpp", "w+")
icall_header_file.write(generate_icall_header(icalls))
icall_source_file = open("src/__icalls.cpp", "w+")
icall_source_file.write(generate_icall_implementation(icalls))
def generate_class_header(used_classes, c):
source = []
source.append("#ifndef GODOT_CPP_" + strip_name(c["name"]).upper() + "_HPP")
source.append("#define GODOT_CPP_" + strip_name(c["name"]).upper() + "_HPP")
source.append("")
source.append("#if defined(_WIN32) && defined(_GD_CPP_BINDING_IMPL)")
source.append("# define GD_CPP_BINDING_API __declspec(dllexport)")
source.append("#elif defined(_WIN32)")
source.append("# define GD_CPP_BINDING_API __declspec(dllimport)")
source.append("#else")
source.append("# define GD_CPP_BINDING_API")
source.append("#endif");
source.append("")
source.append("")
source.append("")
source.append("")
source.append("#include <godot.h>")
source.append("")
source.append("#include <CoreTypes.hpp>")
if c["base_class"] != "":
source.append("#include <" + strip_name(c["base_class"]) + ".hpp>")
source.append("namespace godot {")
source.append("")
for used_type in used_classes:
source.append("class " + strip_name(used_type) + ";")
source.append("")
# generate the class definition here
source.append("class GD_CPP_BINDING_API " + strip_name(c["name"]) + ("" if c["base_class"] == "" else (" : public " + strip_name(c["base_class"])) ) + " {")
source.append("public:")
source.append("")
# ___get_class_name
source.append("\tstatic inline char *___get_class_name() { return (char *) \"" + strip_name(c["name"]) + "\"; }")
source.append("\t// constants")
for name in c["constants"]:
source.append("\tconst static int " + name + " = " + str(c["constants"][name]) + ";")
source.append("")
source.append("\n\t// methods")
for method in c["methods"]:
method_signature = ""
method_signature += "static " if c["singleton"] else ""
method_signature += strip_name(method["return_type"])
method_signature += " *" if is_class_type(method["return_type"]) else " "
method_signature += escape_cpp(method["name"]) + "("
has_default_argument = False
for i, argument in enumerate(method["arguments"]):
method_signature += "const " + argument["type"] + (" *" if is_class_type(argument["type"]) else " ")
method_signature += escape_cpp(argument["name"])
# default arguments
def escape_default_arg(_type, default_value):
if _type == "Color":
return "Color(" + default_value + ")"
if _type == "bool" or _type == "int":
return default_value.lower()
if _type == "Array":
return "Array()"
if _type in ["PoolVector2Array", "PoolStringArray", "PoolVector3Array", "PoolColorArray"]:
return _type + "()"
if _type == "Vector2":
return "Vector2" + default_value
if _type == "Vector3":
return "Vector3" + default_value
if _type == "Transform":
return "Transform()"
if _type == "Transform2D":
return "Transform2D()"
if _type == "Rect2":
return "Rect2" + default_value
if _type == "Variant":
return "Variant()" if default_value == "Null" else default_value
if _type == "String":
return "\"" + default_value + "\""
if _type == "RID":
return "RID()"
if default_value == "Null" or default_value == "[Object:null]":
return "nullptr"
return default_value
if argument["has_default_value"] or has_default_argument:
method_signature += " = " + escape_default_arg(argument["type"], argument["default_value"])
has_default_argument = True
if i != len(method["arguments"]) - 1:
method_signature += ", "
if method["has_varargs"]:
if len(method["arguments"]) > 0:
method_signature += ", "
method_signature += "const Array& __var_args = Array()"
method_signature += ")" + (" const" if method["is_const"] and not c["singleton"] else "")
source.append("\t" + method_signature + ";")
source.append("};")
source.append("")
source.append("}")
source.append("")
source.append("#endif")
return "\n".join(source)
def generate_class_implementation(icalls, used_classes, c):
source = []
source.append("#include <" + strip_name(c["name"]) + ".hpp>")
source.append("")
source.append("")
source.append("#include <CoreTypes.hpp>")
source.append("#include <Godot.hpp>")
source.append("")
source.append("#include \"__icalls.hpp\"")
source.append("")
source.append("")
for used_class in used_classes:
source.append("#include <" + strip_name(used_class) + ".hpp>")
source.append("")
source.append("")
source.append("namespace godot {")
core_object_name = ("___static_object_" + strip_name(c["name"])) if c["singleton"] else "this"
source.append("")
source.append("")
if c["singleton"]:
source.append("static godot_object *" + core_object_name + ";")
source.append("")
source.append("")
# FIXME Test if inlining has a huge impact on binary size
source.append("static inline void ___singleton_init()")
source.append("{")
source.append("\tif (" + core_object_name + " == nullptr) {")
source.append("\t\t" + core_object_name + " = godot_global_get_singleton(\"" + c["name"] + "\");")
source.append("\t}")
source.append("}")
source.append("")
source.append("")
for method in c["methods"]:
method_signature = ""
method_signature += strip_name(method["return_type"])
method_signature += " *" if is_class_type(method["return_type"]) else " "
method_signature += strip_name(c["name"]) + "::" + escape_cpp(method["name"]) + "("
for i, argument in enumerate(method["arguments"]):
method_signature += "const " + argument["type"] + (" *" if is_class_type(argument["type"]) else " ")
method_signature += escape_cpp(argument["name"])
if i != len(method["arguments"]) - 1:
method_signature += ", "
if method["has_varargs"]:
if len(method["arguments"]) > 0:
method_signature += ", "
method_signature += "const Array& __var_args"
method_signature += ")" + (" const" if method["is_const"] and not c["singleton"] else "")
source.append(method_signature + " {")
if c["singleton"]:
source.append("\t___singleton_init();")
source.append("\tstatic godot_method_bind *mb = NULL;")
source.append("\tif (mb == NULL) {")
source.append("\t\tmb = godot_method_bind_get_method(\"" + c["name"] +"\", \"" + method["name"] + "\");")
source.append("\t}")
return_statement = ""
if method["return_type"] != "void":
return_statement += "return " + ("(" + strip_name(method["return_type"]) + " *) " if is_class_type(method["return_type"]) else "")
def get_icall_type_name(name):
if is_class_type(name):
return "Object"
return name
if method["is_virtual"] or method["has_varargs"]:
source.append("\tVariant __given_args[" + str(len(method["arguments"])) + "];")
for i, argument in enumerate(method["arguments"]):
source.append("\tgodot_variant_new_nil((godot_variant *) &__given_args[" + str(i) + "]);")
source.append("")
for i, argument in enumerate(method["arguments"]):
source.append("\t__given_args[" + str(i) + "] = " + escape_cpp(argument["name"]) + ";")
source.append("")
size = ""
if method["has_varargs"]:
size = "(__var_args.size() + " + str(len(method["arguments"])) + ")"
else:
size = "(" + str(len(method["arguments"])) + ")"
source.append("\tgodot_variant **__args = (godot_variant **) alloca(sizeof(godot_variant *) * " + size + ");")
source.append("")
for i, argument in enumerate(method["arguments"]):
source.append("\t__args[" + str(i) + "] = (godot_variant *) &__given_args[" + str(i) + "];")
source.append("")
if method["has_varargs"]:
source.append("\tfor (int i = 0; i < __var_args.size(); i++) {")
source.append("\t\t__args[i + " + str(len(method["arguments"])) + "] = (godot_variant *) &((Array &) __var_args)[i];")
source.append("\t}")
source.append("")
source.append("\tVariant __result;")
source.append("\t*(godot_variant *) &__result = godot_method_bind_call(mb, (godot_object *) " + core_object_name + ", (const godot_variant **) __args, " + size + ", nullptr);")
source.append("")
for i, argument in enumerate(method["arguments"]):
source.append("\tgodot_variant_destroy((godot_variant *) &__given_args[" + str(i) + "]);")
source.append("")
if method["return_type"] != "void":
cast = ""
if is_class_type(method["return_type"]):
cast += "(" + strip_name(method["return_type"]) + " *) (Object *) "
source.append("\treturn " + cast + "__result;")
else:
args = []
for arg in method["arguments"]:
args.append(get_icall_type_name(arg["type"]))
icall_ret_type = get_icall_type_name(method["return_type"])
icall_sig = tuple((icall_ret_type, tuple(args)))
icalls.add(icall_sig)
icall_name = get_icall_name(icall_sig)
return_statement += icall_name + "(mb, (godot_object *) " + core_object_name
for arg in method["arguments"]:
return_statement += ", " + escape_cpp(arg["name"])
return_statement += ")"
source.append("\t" + return_statement + ";")
source.append("}")
source.append("")
source.append("}")
return "\n".join(source)
def generate_icall_header(icalls):
source = []
source.append("#ifndef GODOT_CPP__ICALLS_HPP")
source.append("#define GODOT_CPP__ICALLS_HPP")
source.append("")
source.append("#include <godot.h>")
source.append("")
source.append("")
source.append("#include <CoreTypes.hpp>")
source.append("#include <Object.hpp>")
source.append("")
source.append("")
source.append("namespace godot {")
source.append("")
for icall in icalls:
ret_type = icall[0]
args = icall[1]
method_signature = ""
method_signature += return_type(ret_type) + get_icall_name(icall) + "(godot_method_bind *mb, godot_object *inst"
for arg in args:
method_signature += ", const "
if is_core_type(arg):
method_signature += arg + "&"
elif is_primitive(arg):
method_signature += arg
else:
method_signature += "Object *"
method_signature += ");"
source.append(method_signature)
source.append("")
source.append("}")
source.append("")
source.append("#endif")
return "\n".join(source)
def generate_icall_implementation(icalls):
source = []
source.append("#include \"__icalls.hpp\"")
source.append("")
source.append("#include <godot.h>")
source.append("")
source.append("")
source.append("#include <CoreTypes.hpp>")
source.append("#include <Object.hpp>")
source.append("")
source.append("")
source.append("using namespace godot;")
source.append("")
for icall in icalls:
ret_type = icall[0]
args = icall[1]
method_signature = ""
method_signature += return_type(ret_type) + get_icall_name(icall) + "(godot_method_bind *mb, godot_object *inst"
for i, arg in enumerate(args):
method_signature += ", const "
if is_core_type(arg):
method_signature += arg + "& "
elif is_primitive(arg):
method_signature += arg + " "
else:
method_signature += "Object *"
method_signature += "arg" + str(i)
method_signature += ")"
source.append(method_signature + " {")
if ret_type != "void":
source.append("\t" + strip_name(ret_type) + (" *" if is_class_type(ret_type) else " ") + "ret;")
if is_class_type(ret_type):
source.append("\tret = nullptr;")
source.append("\tconst void *args[" + ("1" if len(args) == 0 else "") + "] = {")
for i, arg in enumerate(args):
wrapped_argument = "\t\t"
if is_primitive(arg) or is_core_type(arg):
wrapped_argument += "(void *) &arg" + str(i)
else:
wrapped_argument += "(void *) arg" + str(i)
wrapped_argument += ","
source.append(wrapped_argument)
source.append("\t};")
source.append("")
source.append("\tgodot_method_bind_ptrcall(mb, inst, args, " + ("nullptr" if ret_type == "void" else "&ret") + ");")
if ret_type != "void":
source.append("\treturn ret;")
source.append("}")
source.append("")
return "\n".join(source)
def return_type(t):
if is_class_type(t):
return "Object *"
return t + " "
def get_icall_name(sig):
ret_type = sig[0]
args = sig[1]
name = "___godot_icall_"
name += strip_name(ret_type)
for arg in args:
name += "_" + strip_name(arg)
return name
def get_used_classes(c):
classes = []
for method in c["methods"]:
if is_class_type(method["return_type"]) and not (method["return_type"] in classes):
classes.append(method["return_type"])
for arg in method["arguments"]:
if is_class_type(arg["type"]) and not (arg["type"] in classes):
classes.append(arg["type"])
return classes
def strip_name(name):
if name[0] == '_':
return name[1:]
return name
def is_class_type(name):
return not is_core_type(name) and not is_primitive(name)
def is_core_type(name):
core_types = ["Array",
"Basis",
"Color",
"Dictionary",
"Error",
"Image",
"InputEvent",
"NodePath",
"Plane",
"PoolByteArray",
"PoolIntArray",
"PoolRealArray",
"PoolStringArray",
"PoolVector2Array",
"PoolVector3Array",
"PoolColorArray",
"Quat",
"Rect2",
"Rect3",
"RID",
"String",
"Transform",
"Transform2D",
"Variant",
"Vector2",
"Vector3"]
return name in core_types
def is_primitive(name):
core_types = ["int", "bool", "real", "float", "void"]
return name in core_types
def escape_cpp(name):
escapes = {
"class": "_class",
"char": "_char",
"short": "_short",
"bool": "_bool",
"int": "_int",
"default": "_default",
"case": "_case",
"switch": "_switch",
"export": "_export",
"template": "_template",
"new": "new_"
}
if name in escapes:
return escapes[name]
return name

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@ -1,4 +0,0 @@
target
.idea/
*.iml
Cargo.lock

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@ -1,9 +0,0 @@
[package]
name = "binding_generator"
version = "0.1.0"
authors = ["karroffel"]
[dependencies]
serde = "*"
serde_json = "*"
serde_derive = "*"

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@ -1,772 +0,0 @@
extern crate serde_json;
#[macro_use]
extern crate serde_derive;
use serde_json::*;
use std::fs::File;
use std::iter::Iterator;
use std::io::prelude::*;
use std::collections::HashSet;
use std::env;
// use std::ascii::AsciiExt;
#[derive(Deserialize)]
struct GodotClass {
name: String,
base_class: String,
api_type: String,
singleton: bool,
instanciable: bool,
is_reference: bool,
constants: Map<String, Value>,
methods: Vec<GodotMethod>
}
#[derive(Deserialize)]
struct GodotMethod {
name: String,
return_type: String,
is_editor: bool,
is_noscript: bool,
is_const: bool,
is_virtual: bool,
has_varargs: bool,
is_from_script: bool,
arguments: Vec<GodotArgument>
}
#[derive(Deserialize)]
struct GodotArgument {
name: String,
#[serde(rename = "type")]
_type: String,
has_default_value: bool,
default_value: String
}
fn strip_name(s: &String) -> &str {
if s.starts_with("_") {
unsafe { s.slice_unchecked(1, s.len()) }
} else {
s.as_str()
}
}
fn main() {
let base_dir = match env::args().nth(2) {
Some(x) => x,
None => return
};
let mut file = match env::args().nth(1) {
Some(x) => File::open(x).unwrap(),
None => return
};
let mut file_contents = String::new();
file.read_to_string(&mut file_contents);
let json: Vec<GodotClass> = serde_json::from_str::<Vec<GodotClass>>(&file_contents).unwrap();
let mut icalls: HashSet<(String, Vec<String>)> = HashSet::new();
for class in &json {
// make this toggleable with a command line switch
// if class.api_type == "tools" {
// println!("{}", class.name);
// continue
// }
let used_classes = get_used_classes(&class);
let mut header = File::create((base_dir.to_string() + strip_name(&class.name) + ".hpp").as_str()).unwrap();
header.write_all(generate_class_header(&used_classes, &class).as_bytes());
let mut implementation = File::create((base_dir.to_string() + "impl/" + strip_name(&class.name) + ".cpp").as_str()).unwrap();
implementation.write_all(generate_class_implementation(&mut icalls, &used_classes, &class).as_bytes());
}
// generate icall files
let mut icall_header = File::create((base_dir.to_string() + "__icalls.hpp").as_str()).unwrap();
icall_header.write_all(generate_icall_header(&icalls).as_bytes());
let mut icall_implmentation = File::create((base_dir.to_string() + "impl/__icalls.cpp").as_str()).unwrap();
icall_implmentation.write_all(generate_icall_implementation(&json, &icalls).as_bytes());
}
fn get_used_classes(class: &GodotClass) -> HashSet<&String> {
let mut classes = HashSet::new();
// classes.insert(&class.base_class);
for method in &class.methods {
if !is_primitive(&method.return_type) &&!is_core_type(&method.return_type) && !classes.contains(&method.return_type) {
classes.insert(&method.return_type);
}
for argument in &method.arguments {
if !is_primitive(&argument._type) &&!is_core_type(&argument._type) && !classes.contains(&argument._type) {
classes.insert(&argument._type);
}
}
}
return classes;
}
fn generate_class_header(used_classes: &HashSet<&String>, class: &GodotClass) -> String {
let mut contents = String::new();
contents = contents + "#ifndef ";
contents = contents + strip_name(&class.name).to_string().to_uppercase().as_str() + "_H\n";
contents = contents + "#define ";
contents = contents + strip_name(&class.name).to_string().to_uppercase().as_str() + "_H\n\n";
contents = contents + "#if defined(_WIN32) && defined(_GD_CPP_BINDING_IMPL)\n";
contents = contents + "# define GD_CPP_BINDING_API __declspec(dllexport)\n";
contents = contents + "#elif defined(_WIN32)\n";
contents = contents + "# define GD_CPP_BINDING_API __declspec(dllimport)\n";
contents = contents + "#else\n";
contents = contents + "# define GD_CPP_BINDING_API\n";
contents = contents + "#endif\n\n";
contents = contents + "\n#include \"core/CoreTypes.hpp\"\n";
contents = contents + "\n#include <godot.h>\n\n\n";
if class.base_class != "" {
contents = contents + "\n#include \"" + strip_name(&class.base_class) + ".hpp\"\n\n\n";
}
contents = contents + "namespace godot {\n\n";
// contents += forward_declares;
for used_type in used_classes {
contents = contents + "class " + strip_name(used_type) + ";\n"
}
contents = contents + "\n\n";
let core_obj_name = {
let mut name = String::new();
if class.singleton {
name = name + "___static_object_" + strip_name(&class.name);
} else {
name = name + "this";
};
name
};
contents = contents + "class GD_CPP_BINDING_API " + strip_name(&class.name);
if class.base_class != "" {
contents = contents + " : public " + strip_name(&class.base_class);
}
contents = contents + " {\n";
// if class.base_class == "" {
// contents = contents + "public:\n\tgodot_object *__core_object = 0;\n\n";
// }
if class.singleton {
contents = contents + "private:\n";
contents = contents + "\tstatic void ___singleton_init();\n";
}
contents = contents + "public:\n\n";
// default constructor
{
contents = contents + "\tstatic " + strip_name(&class.name) + "* _new();\n\n";
}
// pointer constructor
// {
// contents = contents + "\t" + strip_name(&class.name) + "(godot_object *ptr);\n\n";
// }
// object constructor
// if !class.singleton {
// contents = contents + "\t" + strip_name(&class.name) + "(const Object *ptr);\n\n";
// contents = contents + "\t" + strip_name(&class.name) + "(const Variant& obj);\n\n";
// }
if class.name != "Object" {
contents = contents + "\tvoid _init();\n\n";
}
// if class.instanciable {
// contents = contents + "\tstatic " + strip_name(&class.name) + " __new();\n";
// contents = contents + "\tvoid __destroy();\n\n";
// }
for (name, value) in &class.constants {
contents = contents + "\tconst static int " + name.as_str() + " = " + value.as_i64().unwrap().to_string().as_str() + ";\n";
}
contents += "\n\n";
fn escape_default_arg(type_: &String, arg: &String) -> String {
match type_.as_str() {
"Color" => {
String::from("Color(") + arg.as_str() + ")"
},
"bool" | "int" => {
String::from(arg.as_str()).as_str().to_lowercase()
},
"Array" => {
String::from("Array()")
},
"PoolVector2Array" | "PoolStringArray" | "PoolColorArray" | "PoolVector3Array" => {
type_.clone() + "()" // String::from("PoolVector2Array()")
}
"Vector2" => {
String::from("Vector2") + arg.as_str()
}
"Vector3" => {
String::from("Vector3") + arg.as_str()
}
"Transform" => {
String::from("Transform()")// + arg.as_str() + ")"
}
"Transform2D" => {
String::from("Transform2D()")
}
"Rect2" => {
String::from("Rect2") + arg.as_str()
}
"Variant" => {
if arg == "Null" {
String::from("Variant()")
} else {
arg.clone()
}
}
"String" => {
String::from("\"") + arg.as_str() + "\""
}
"RID" => {
String::from("RID()")
}
_ => {
match arg.as_str() {
"Null" => String::from("nullptr"),
"[Object:null]" => String::from("nullptr"),
a => String::from(a)
}
}
}
}
for method in &class.methods {
contents = contents + "\t" + (if class.singleton { "static " } else { "" }) + strip_name(&method.return_type) + (if !is_core_type(&method.return_type) && !is_primitive(&method.return_type) { " *" } else { " " }) + escape_cpp(&method.name) + "(";
let mut has_default = false;
for (i, argument) in (&method.arguments).iter().enumerate() {
if !is_primitive(&argument._type) && !is_core_type(&argument._type) {
contents = contents + "const " + argument._type.as_str() + " *";
} else {
contents = contents + "const " + argument._type.as_str() + " ";
}
contents = contents + escape_cpp(&argument.name);
if argument.has_default_value || has_default {
contents = contents + " = " + escape_default_arg(&argument._type, &argument.default_value).as_str();
has_default = true;
}// else if has_default {
// contents = contents + " = \"\"";
//}
if i != method.arguments.len() - 1 {
contents += ", ";
}
}
if method.has_varargs {
if method.arguments.len() > 0 {
contents += ", ";
}
contents = contents + "const Array& __var_args = Array()";
}
contents = contents + ")" + if method.is_const && !class.singleton { " const" } else { "" } + ";\n";
// contents = contents + ")" + if method.is_const { " const" } else { "" } + ";\n";
}
contents = contents + "};\n\n";
// if class.base_class == "" {
// // Object
// contents = contents + "\ninline\n#if defined(_WIN32)\n# ifdef _GD_CPP_BINDING_IMPL\n __declspec(dllexport)\n# else\n __declspec(dllimport)\n# endif\n#endif\nVariant::operator Object() const\n{\n\n";
// contents = contents + "\treturn Object(godot_variant_as_object(&_godot_variant));\n\n";
// contents = contents + "\n}\n\n";
// }
contents = contents + "}\n";
contents = contents + "#endif\n";
contents
}
fn generate_class_implementation(icalls: &mut HashSet<(String, Vec<String>)>, used_classes: &HashSet<&String>, class: &GodotClass) -> String {
let mut contents = String::new();
contents = contents + "#include \"" + strip_name(&class.name) + ".hpp" + "\"\n";
contents = contents + "\n#include \"core/CoreTypes.hpp\"\n";
contents = contents + "\n#include \"Godot.hpp\"\n\n";
if class.instanciable {
contents = contents + "#include \"ClassDB.hpp\"\n";
}
contents = contents + "\n#include \"__icalls.hpp\"\n\n\n";
for used_class in used_classes {
contents = contents + "#include \"" + strip_name(used_class) + ".hpp\"\n";
}
contents = contents + "\n\n";
contents = contents + "namespace godot {\n\n";
let core_obj_name = {
let mut name = String::new();
if class.singleton {
name = name + "___static_object_" + strip_name(&class.name);
} else {
name = name + "this";
};
name
};
contents = contents + "\n\n\n";
if class.singleton {
contents = contents + "static godot_object *" + core_obj_name.as_str() + ";\n\n\n\n\n";
}
if class.singleton {
contents = contents + "void " + strip_name(&class.name) + "::___singleton_init()\n{\n\t"
+ core_obj_name.as_str() + " = godot_global_get_singleton(\"" + strip_name(&class.name) + "\");\n}\n\n";
}
// default constructor
{
contents = contents + strip_name(&class.name) + " *" + strip_name(&class.name) + "::_new()\n{\n";
contents = contents + "\tgodot_class_constructor constructor = godot_get_class_constructor(\"" + class.name.as_str() + "\");\n";
contents = contents + "\tif (!constructor) { return nullptr; }\n";
contents = contents + "\treturn (" + strip_name(&class.name) + " *) constructor();\n";
contents = contents + "}\n\n";
}
// pointer constructor
// {
// contents = contents + "" + strip_name(&class.name) + "::" + strip_name(&class.name) + "(godot_object *ptr)\n{\n";
// contents = contents + "\t__core_object = ptr;\n";
// contents = contents + "}\n\n\n";
// }
// Object constructor
// if !class.singleton {
// contents = contents + "" + strip_name(&class.name) + "::" + strip_name(&class.name) + "(const Object *ptr)\n{\n";
// contents = contents + "\t__core_object = ?;\n";
// contents = contents + "}\n\n\n";
//
// contents = contents + "" + strip_name(&class.name) + "::" + strip_name(&class.name) + "(const Variant& obj)\n{\n";
// contents = contents + "\t__core_object = ((Object) obj).__core_object;\n";
// contents = contents + "}\n\n\n";
// }
if class.name != "Object" {
contents = contents + "void " + strip_name(&class.name) + "::" + "_init()\n{\n";
contents = contents + "\t\n";
contents = contents + "}\n\n";
}
contents += "\n\n";
for method in &class.methods {
contents = contents + strip_name(&method.return_type) + (if !is_core_type(&method.return_type) && !is_primitive(&method.return_type) { " *" } else { " " }) + strip_name(&class.name) + "::" + escape_cpp(&method.name) + "(";
for (i, argument) in (&method.arguments).iter().enumerate() {
if !is_primitive(&argument._type) && !is_core_type(&argument._type) {
contents = contents + "const " + argument._type.as_str() + " *";
} else {
contents = contents + "const " + argument._type.as_str() + " ";
}
contents = contents + escape_cpp(&argument.name);
if i != method.arguments.len() - 1 {
contents += ", ";
}
}
if method.has_varargs {
if method.arguments.len() > 0 {
contents += ", ";
}
contents = contents + "const Array& __var_args";
}
contents = contents + ")" + if method.is_const && !class.singleton { " const" } else { "" } + "\n{\n";
if class.singleton {
contents = contents + "\tif (" + core_obj_name.as_str() + " == 0) {\n";
contents = contents + "\t\t___singleton_init();\n";
contents = contents + "\t}\n\n";
}
if method.is_virtual || method.has_varargs {
contents = contents + "\tArray __args;\n";
// fill in the args
for arg in &method.arguments {
contents = contents + "\t__args.append(" + escape_cpp(&arg.name) + ");\n";
}
if method.has_varargs {
contents = contents + "\tfor (int i = 0; i < __var_args.size(); i++) {\n";
contents = contents + "\t\t__args.append(__var_args[i]);\n";
contents = contents + "\t}\n";
}
contents = contents + "\t";
if method.return_type != "void" {
contents = contents + "return ";
if !is_primitive(&method.return_type) && !is_core_type(&method.return_type) {
contents = contents + "(" + strip_name(&method.return_type) + " *) (Object *) ";
}
}
contents = contents + "((Object *) " + core_obj_name.as_str() + ")->callv(\"" + method.name.as_str() + "\", __args);\n";
} else {
contents = contents + "\tstatic godot_method_bind *mb = NULL;\n"
+ "\tif (mb == NULL) {\n"
+ "\t\tmb = godot_method_bind_get_method(\"" + class.name.as_str() + "\", \"" + method.name.as_str() + "\");\n"
+ "\t}\n\t";
if method.return_type != "void" {
contents = contents + "return ";
if !is_primitive(&method.return_type) && !is_core_type(&method.return_type) {
contents = contents + "(" + strip_name(&method.return_type) + " *) ";
}
}
let mut args = Vec::new();
fn get_icall_type_name(t: &String) -> String {
if is_core_type(t) || is_primitive(t) {
t.clone()
} else {
String::from("Object")
}
}
for arg in &method.arguments {
args.push(get_icall_type_name(&arg._type));
}
let icallsig = (get_icall_type_name(&method.return_type), args);
let name = get_icall_name(&icallsig);
icalls.insert(icallsig);
contents = contents + name.as_str() + "(mb, (godot_object *) " + core_obj_name.as_str();
for arg in &method.arguments {
contents = contents + ", " + escape_cpp(&arg.name);
}
// if !is_primitive(&method.return_type) && !is_core_type(&method.return_type) {
// contents = contents + ")";
// }
contents = contents + ");\n";
}
contents = contents + "}\n\n";
}
// if class.instanciable {
// contents = contents + strip_name(&class.name) + " " + strip_name(&class.name) + "::__new() {\n";
// contents = contents + "\tObject ptr = ClassDB::instance(\"" + class.name.as_str() + "\");\n";
// contents = contents + "\treturn ptr;\n";
// contents = contents + "}\n\n";
// contents = contents + "void " + strip_name(&class.name) + "::__destroy() {\n";
// contents = contents + "\tgodot_object_destroy(__core_object);\n";
// contents = contents + "}\n\n\n";
/* if class.base_class == "" {
// Object
contents = contents + "Variant::operator Object()const {\n\n";
contents = contents + "\treturn Object(godot_variant_as_object(&_godot_variant));\n\n";
contents = contents + "}\n\n";
} */
// }
contents = contents + "}\n";
contents
}
fn get_icall_name(sig: &(String, Vec<String>)) -> String {
let &(ref ret, ref args) = sig;
let mut name = String::new();
name = name + "___godot_icall_";
name = name + strip_name(&ret);
for arg in args {
name = name + "_" + strip_name(&arg);
}
name
}
fn get_icall_name_ref(sig: (&String, &Vec<String>)) -> String {
let (ref ret, args) = sig;
let mut name = String::new();
name = name + "___godot_icall_";
name = name + strip_name(&ret);
for arg in args {
name = name + "_" + strip_name(&arg);
}
name
}
fn generate_icall_header(icalls: &HashSet<(String, Vec<String>)>) -> String {
fn return_type(t: &String) -> String {
if is_primitive(t) || is_core_type(t) {
t.clone()
} else {
String::from("Object *")
}
}
let mut contents = String::new();
contents = contents + "#ifndef __ICALLS_H\n";
contents = contents + "#define __ICALLS_H\n\n\n";
contents = contents + "#include <godot.h>\n\n\n";
contents = contents + "#include \"core/CoreTypes.hpp\"\n";
contents = contents + "#include \"Object.hpp\"\n\n\n";
contents = contents + "using namespace godot;\n\n\n";
for &(ref ret, ref args) in icalls {
contents = contents + return_type(ret).as_str() + " " + get_icall_name_ref((ret, args)).as_str() + "(godot_method_bind *mb, godot_object *inst";
for arg in args {
contents = contents + ", ";
if is_core_type(&arg) {
// if !is_primitive(&arg) {
contents = contents + "const " + arg.as_str() + "& ";
} else if is_primitive(&arg) {
contents = contents + "const " + arg.as_str() + " ";
} else {
contents = contents + "const Object *";
}
}
contents = contents + ");\n";
}
contents = contents + "#endif";
contents
}
fn generate_icall_implementation(class_api: &Vec<GodotClass>, icalls: &HashSet<(String, Vec<String>)>) -> String {
fn return_type(t: &String) -> String {
if is_primitive(t) || is_core_type(t) {
t.clone()
} else {
let s = String::new() + t.as_str() + " *";
s
}
}
let is_reference = |name: &String| {
for class in class_api {
if class.name.as_str() == name.as_str() {
return class.is_reference;
}
}
false
};
let mut contents = String::new();
contents = contents + "#include \"__icalls.hpp\"\n";
contents = contents + "#include <godot.h>\n\n\n";
contents = contents + "#include \"core/CoreTypes.hpp\"\n";
contents = contents + "#include \"Object.hpp\"\n\n\n";
contents = contents + "using namespace godot;\n\n\n";
for &(ref ret, ref args) in icalls {
contents = contents + return_type(ret).as_str() + " " + get_icall_name_ref((ret, args)).as_str() + "(godot_method_bind *mb, godot_object *inst";
let mut i = 0;
for arg in args {
contents = contents + ", ";
if is_core_type(&arg) {
// if !is_primitive(&arg) {
contents = contents + "const " + arg.as_str() + "& ";
} else if is_primitive(&arg) {
contents = contents + "const " + arg.as_str() + " ";
} else {
contents = contents + "const " + arg.as_str() + " *";
}
contents = contents + "arg" + i.to_string().as_str();
i = i + 1;
}
contents = contents + ")\n";
contents = contents + "{\n";
if ret != "void" {
contents = contents + "\t" + strip_name(ret) + if !is_core_type(ret) && !is_primitive(ret) { " *" } else { "" } + " ret;\n";
if !is_core_type(ret) && !is_primitive(ret) {
contents = contents + "\t" + "ret = nullptr;\n";
}
}
contents = contents + "\tconst void *args[" + if args.len() == 0 { "1" } else { "" } + "] = {\n";
let mut j = 0;
for arg in args {
contents = contents + "\t\t";
if is_primitive(arg) {
contents = contents + "&arg" + j.to_string().as_str();
} else if is_core_type(arg) {
contents = contents + "(void *) &arg" + j.to_string().as_str();
} else {
contents = contents + "(void *) arg" + j.to_string().as_str();
}
contents = contents + ",\n";
j = j + 1;
}
contents = contents + "\t};\n";
contents = contents + "\tgodot_method_bind_ptrcall(mb, inst, args, " + if ret == "void" { "NULL" } else { "&ret" } + ");\n";
if !is_primitive(ret) && !is_core_type(ret) {
contents = contents + "\treturn ret;\n";
} else if ret != "void" {
contents = contents + "\treturn ret;\n";
}
contents = contents + "}\n\n";
}
// contents = contents + "#endif";
contents
}
fn is_core_type(name: &String) -> bool {
let core_types = vec!["Array",
"Basis",
"Color",
"Dictionary",
"Error",
"Image",
"InputEvent",
"NodePath",
"Plane",
"PoolByteArray",
"PoolIntArray",
"PoolRealArray",
"PoolStringArray",
"PoolVector2Array",
"PoolVector3Array",
"PoolColorArray",
"Quat",
"Rect2",
"Rect3",
"RID",
"String",
"Transform",
"Transform2D",
"Variant",
"Vector2",
"Vector3"];
core_types.contains(&name.as_str())
}
fn is_primitive(name: &String) -> bool {
let core_types = vec!["int", "bool", "real", "float", "void"];
core_types.contains(&name.as_str())
}
fn escape_cpp(name: &String) -> &str {
match name.as_str() {
"class" => "_class",
"char" => "_char",
"short" => "_short",
"bool" => "_bool",
"int" => "_int",
"default" => "_default",
"case" => "_case",
"switch" => "_switch",
"export" => "_export",
"template" => "_template",
"new" => "new_",
x => x
}
}

View File

@ -6,10 +6,10 @@
#include <godot.h>
#include <godot_cpp/core/CoreTypes.hpp>
#include <godot_cpp/core/Variant.hpp>
#include <CoreTypes.hpp>
#include <Variant.hpp>
#include <godot_cpp/Object.hpp>
#include <Object.hpp>
namespace godot {