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virtualx-engine/modules/mono/editor/bindings_generator.cpp
Ignacio Etcheverry aa9908e4f6 Script API methods must return Ref<T> instead of Reference* 
ptrcall assumes methods that return a Reference type do so with Ref<T>. Returning Reference* from a method exposed to the scripting API completely breaks ptrcalls to this method (it can be quite hard to debug!).
2019-07-05 09:38:28 +02:00

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/*************************************************************************/
/* bindings_generator.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md) */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "bindings_generator.h"
#ifdef DEBUG_METHODS_ENABLED
#include "core/engine.h"
#include "core/global_constants.h"
#include "core/io/compression.h"
#include "core/os/dir_access.h"
#include "core/os/file_access.h"
#include "core/os/os.h"
#include "core/ucaps.h"
#include "../glue/cs_compressed.gen.h"
#include "../glue/cs_glue_version.gen.h"
#include "../godotsharp_defs.h"
#include "../mono_gd/gd_mono_marshal.h"
#include "../utils/path_utils.h"
#include "../utils/string_utils.h"
#include "csharp_project.h"
#define CS_INDENT " " // 4 whitespaces
#define INDENT1 CS_INDENT
#define INDENT2 INDENT1 INDENT1
#define INDENT3 INDENT2 INDENT1
#define INDENT4 INDENT3 INDENT1
#define INDENT5 INDENT4 INDENT1
#define MEMBER_BEGIN "\n" INDENT2
#define OPEN_BLOCK "{\n"
#define CLOSE_BLOCK "}\n"
#define OPEN_BLOCK_L2 INDENT2 OPEN_BLOCK INDENT3
#define OPEN_BLOCK_L3 INDENT3 OPEN_BLOCK INDENT4
#define OPEN_BLOCK_L4 INDENT4 OPEN_BLOCK INDENT5
#define CLOSE_BLOCK_L2 INDENT2 CLOSE_BLOCK
#define CLOSE_BLOCK_L3 INDENT3 CLOSE_BLOCK
#define CLOSE_BLOCK_L4 INDENT4 CLOSE_BLOCK
#define CS_FIELD_MEMORYOWN "memoryOwn"
#define CS_PARAM_METHODBIND "method"
#define CS_PARAM_INSTANCE "ptr"
#define CS_SMETHOD_GETINSTANCE "GetPtr"
#define CS_METHOD_CALL "Call"
#define GLUE_HEADER_FILE "glue_header.h"
#define ICALL_PREFIX "godot_icall_"
#define SINGLETON_ICALL_SUFFIX "_get_singleton"
#define ICALL_GET_METHODBIND ICALL_PREFIX "Object_ClassDB_get_method"
#define C_LOCAL_RET "ret"
#define C_LOCAL_VARARG_RET "vararg_ret"
#define C_LOCAL_PTRCALL_ARGS "call_args"
#define C_MACRO_OBJECT_CONSTRUCT "GODOTSHARP_INSTANCE_OBJECT"
#define C_NS_MONOUTILS "GDMonoUtils"
#define C_NS_MONOINTERNALS "GDMonoInternals"
#define C_METHOD_TIE_MANAGED_TO_UNMANAGED C_NS_MONOINTERNALS "::tie_managed_to_unmanaged"
#define C_METHOD_UNMANAGED_GET_MANAGED C_NS_MONOUTILS "::unmanaged_get_managed"
#define C_NS_MONOMARSHAL "GDMonoMarshal"
#define C_METHOD_MANAGED_TO_VARIANT C_NS_MONOMARSHAL "::mono_object_to_variant"
#define C_METHOD_MANAGED_FROM_VARIANT C_NS_MONOMARSHAL "::variant_to_mono_object"
#define C_METHOD_MONOSTR_TO_GODOT C_NS_MONOMARSHAL "::mono_string_to_godot"
#define C_METHOD_MONOSTR_FROM_GODOT C_NS_MONOMARSHAL "::mono_string_from_godot"
#define C_METHOD_MONOARRAY_TO(m_type) C_NS_MONOMARSHAL "::mono_array_to_" #m_type
#define C_METHOD_MONOARRAY_FROM(m_type) C_NS_MONOMARSHAL "::" #m_type "_to_mono_array"
#define BINDINGS_GENERATOR_VERSION UINT32_C(9)
const char *BindingsGenerator::TypeInterface::DEFAULT_VARARG_C_IN("\t%0 %1_in = %1;\n");
static String fix_doc_description(const String &p_bbcode) {
// This seems to be the correct way to do this. It's the same EditorHelp does.
return p_bbcode.dedent()
.replace("\t", "")
.replace("\r", "")
.strip_edges();
}
static String snake_to_pascal_case(const String &p_identifier, bool p_input_is_upper = false) {
String ret;
Vector<String> parts = p_identifier.split("_", true);
for (int i = 0; i < parts.size(); i++) {
String part = parts[i];
if (part.length()) {
part[0] = _find_upper(part[0]);
if (p_input_is_upper) {
for (int j = 1; j < part.length(); j++)
part[j] = _find_lower(part[j]);
}
ret += part;
} else {
if (i == 0 || i == (parts.size() - 1)) {
// Preserve underscores at the beginning and end
ret += "_";
} else {
// Preserve contiguous underscores
if (parts[i - 1].length()) {
ret += "__";
} else {
ret += "_";
}
}
}
}
return ret;
}
static String snake_to_camel_case(const String &p_identifier, bool p_input_is_upper = false) {
String ret;
Vector<String> parts = p_identifier.split("_", true);
for (int i = 0; i < parts.size(); i++) {
String part = parts[i];
if (part.length()) {
if (i != 0) {
part[0] = _find_upper(part[0]);
}
if (p_input_is_upper) {
for (int j = i != 0 ? 1 : 0; j < part.length(); j++)
part[j] = _find_lower(part[j]);
}
ret += part;
} else {
if (i == 0 || i == (parts.size() - 1)) {
// Preserve underscores at the beginning and end
ret += "_";
} else {
// Preserve contiguous underscores
if (parts[i - 1].length()) {
ret += "__";
} else {
ret += "_";
}
}
}
}
return ret;
}
String BindingsGenerator::bbcode_to_xml(const String &p_bbcode, const TypeInterface *p_itype) {
// Based on the version in EditorHelp
if (p_bbcode.empty())
return String();
DocData *doc = EditorHelp::get_doc_data();
String bbcode = p_bbcode;
StringBuilder xml_output;
xml_output.append("<para>");
List<String> tag_stack;
bool code_tag = false;
int pos = 0;
while (pos < bbcode.length()) {
int brk_pos = bbcode.find("[", pos);
if (brk_pos < 0)
brk_pos = bbcode.length();
if (brk_pos > pos) {
String text = bbcode.substr(pos, brk_pos - pos);
if (code_tag || tag_stack.size() > 0) {
xml_output.append(text.xml_escape());
} else {
Vector<String> lines = text.split("\n");
for (int i = 0; i < lines.size(); i++) {
if (i != 0)
xml_output.append("<para>");
xml_output.append(lines[i].xml_escape());
if (i != lines.size() - 1)
xml_output.append("</para>\n");
}
}
}
if (brk_pos == bbcode.length())
break; // nothing else to add
int brk_end = bbcode.find("]", brk_pos + 1);
if (brk_end == -1) {
String text = bbcode.substr(brk_pos, bbcode.length() - brk_pos);
if (code_tag || tag_stack.size() > 0) {
xml_output.append(text.xml_escape());
} else {
Vector<String> lines = text.split("\n");
for (int i = 0; i < lines.size(); i++) {
if (i != 0)
xml_output.append("<para>");
xml_output.append(lines[i].xml_escape());
if (i != lines.size() - 1)
xml_output.append("</para>\n");
}
}
break;
}
String tag = bbcode.substr(brk_pos + 1, brk_end - brk_pos - 1);
if (tag.begins_with("/")) {
bool tag_ok = tag_stack.size() && tag_stack.front()->get() == tag.substr(1, tag.length());
if (!tag_ok) {
xml_output.append("[");
pos = brk_pos + 1;
continue;
}
tag_stack.pop_front();
pos = brk_end + 1;
code_tag = false;
if (tag == "/url") {
xml_output.append("</a>");
} else if (tag == "/code") {
xml_output.append("</c>");
} else if (tag == "/codeblock") {
xml_output.append("</code>");
}
} else if (code_tag) {
xml_output.append("[");
pos = brk_pos + 1;
} else if (tag.begins_with("method ") || tag.begins_with("member ") || tag.begins_with("signal ") || tag.begins_with("enum ") || tag.begins_with("constant ")) {
String link_target = tag.substr(tag.find(" ") + 1, tag.length());
String link_tag = tag.substr(0, tag.find(" "));
Vector<String> link_target_parts = link_target.split(".");
if (link_target_parts.size() <= 0 || link_target_parts.size() > 2) {
ERR_PRINTS("Invalid reference format: " + tag);
xml_output.append("<c>");
xml_output.append(tag);
xml_output.append("</c>");
pos = brk_end + 1;
continue;
}
const TypeInterface *target_itype;
StringName target_cname;
if (link_target_parts.size() == 2) {
target_itype = _get_type_or_null(TypeReference(link_target_parts[0]));
if (!target_itype) {
target_itype = _get_type_or_null(TypeReference("_" + link_target_parts[0]));
}
target_cname = link_target_parts[1];
} else {
target_itype = p_itype;
target_cname = link_target_parts[0];
}
if (link_tag == "method") {
if (!target_itype || !target_itype->is_object_type) {
if (OS::get_singleton()->is_stdout_verbose()) {
if (target_itype) {
OS::get_singleton()->print("Cannot resolve method reference for non-Godot.Object type in documentation: %s\n", link_target.utf8().get_data());
} else {
OS::get_singleton()->print("Cannot resolve type from method reference in documentation: %s\n", link_target.utf8().get_data());
}
}
// TODO Map what we can
xml_output.append("<c>");
xml_output.append(link_target);
xml_output.append("</c>");
} else {
const MethodInterface *target_imethod = target_itype->find_method_by_name(target_cname);
if (target_imethod) {
xml_output.append("<see cref=\"" BINDINGS_NAMESPACE ".");
xml_output.append(target_itype->proxy_name);
xml_output.append(".");
xml_output.append(target_imethod->proxy_name);
xml_output.append("\"/>");
}
}
} else if (link_tag == "member") {
if (!target_itype || !target_itype->is_object_type) {
if (OS::get_singleton()->is_stdout_verbose()) {
if (target_itype) {
OS::get_singleton()->print("Cannot resolve member reference for non-Godot.Object type in documentation: %s\n", link_target.utf8().get_data());
} else {
OS::get_singleton()->print("Cannot resolve type from member reference in documentation: %s\n", link_target.utf8().get_data());
}
}
// TODO Map what we can
xml_output.append("<c>");
xml_output.append(link_target);
xml_output.append("</c>");
} else {
const PropertyInterface *target_iprop = target_itype->find_property_by_name(target_cname);
if (target_iprop) {
xml_output.append("<see cref=\"" BINDINGS_NAMESPACE ".");
xml_output.append(target_itype->proxy_name);
xml_output.append(".");
xml_output.append(target_iprop->proxy_name);
xml_output.append("\"/>");
}
}
} else if (link_tag == "signal") {
// We do not declare signals in any way in C#, so there is nothing to reference
xml_output.append("<c>");
xml_output.append(link_target);
xml_output.append("</c>");
} else if (link_tag == "enum") {
StringName search_cname = !target_itype ? target_cname :
StringName(target_itype->name + "." + (String)target_cname);
const Map<StringName, TypeInterface>::Element *enum_match = enum_types.find(search_cname);
if (!enum_match && search_cname != target_cname) {
enum_match = enum_types.find(target_cname);
}
if (enum_match) {
const TypeInterface &target_enum_itype = enum_match->value();
xml_output.append("<see cref=\"" BINDINGS_NAMESPACE ".");
xml_output.append(target_enum_itype.proxy_name); // Includes nesting class if any
xml_output.append("\"/>");
} else {
ERR_PRINTS("Cannot resolve enum reference in documentation: " + link_target);
xml_output.append("<c>");
xml_output.append(link_target);
xml_output.append("</c>");
}
} else if (link_tag == "const") {
if (!target_itype || !target_itype->is_object_type) {
if (OS::get_singleton()->is_stdout_verbose()) {
if (target_itype) {
OS::get_singleton()->print("Cannot resolve constant reference for non-Godot.Object type in documentation: %s\n", link_target.utf8().get_data());
} else {
OS::get_singleton()->print("Cannot resolve type from constant reference in documentation: %s\n", link_target.utf8().get_data());
}
}
// TODO Map what we can
xml_output.append("<c>");
xml_output.append(link_target);
xml_output.append("</c>");
} else if (!target_itype && target_cname == name_cache.type_at_GlobalScope) {
String target_name = (String)target_cname;
// Try to find as a global constant
const ConstantInterface *target_iconst = find_constant_by_name(target_name, global_constants);
if (target_iconst) {
// Found global constant
xml_output.append("<see cref=\"" BINDINGS_NAMESPACE "." BINDINGS_GLOBAL_SCOPE_CLASS ".");
xml_output.append(target_iconst->proxy_name);
xml_output.append("\"/>");
} else {
// Try to find as global enum constant
const EnumInterface *target_ienum = NULL;
for (const List<EnumInterface>::Element *E = global_enums.front(); E; E = E->next()) {
target_ienum = &E->get();
target_iconst = find_constant_by_name(target_name, target_ienum->constants);
if (target_iconst)
break;
}
if (target_iconst) {
xml_output.append("<see cref=\"" BINDINGS_NAMESPACE ".");
xml_output.append(target_ienum->cname);
xml_output.append(".");
xml_output.append(target_iconst->proxy_name);
xml_output.append("\"/>");
} else {
ERR_PRINTS("Cannot resolve global constant reference in documentation: " + link_target);
xml_output.append("<c>");
xml_output.append(link_target);
xml_output.append("</c>");
}
}
} else {
String target_name = (String)target_cname;
// Try to find the constant in the current class
const ConstantInterface *target_iconst = find_constant_by_name(target_name, target_itype->constants);
if (target_iconst) {
// Found constant in current class
xml_output.append("<see cref=\"" BINDINGS_NAMESPACE ".");
xml_output.append(target_itype->proxy_name);
xml_output.append(".");
xml_output.append(target_iconst->proxy_name);
xml_output.append("\"/>");
} else {
// Try to find as enum constant in the current class
const EnumInterface *target_ienum = NULL;
for (const List<EnumInterface>::Element *E = target_itype->enums.front(); E; E = E->next()) {
target_ienum = &E->get();
target_iconst = find_constant_by_name(target_name, target_ienum->constants);
if (target_iconst)
break;
}
if (target_iconst) {
xml_output.append("<see cref=\"" BINDINGS_NAMESPACE ".");
xml_output.append(target_itype->proxy_name);
xml_output.append(".");
xml_output.append(target_ienum->cname);
xml_output.append(".");
xml_output.append(target_iconst->proxy_name);
xml_output.append("\"/>");
} else {
ERR_PRINTS("Cannot resolve constant reference in documentation: " + link_target);
xml_output.append("<c>");
xml_output.append(link_target);
xml_output.append("</c>");
}
}
}
}
pos = brk_end + 1;
} else if (doc->class_list.has(tag)) {
if (tag == "Array" || tag == "Dictionary") {
xml_output.append("<see cref=\"" BINDINGS_NAMESPACE_COLLECTIONS ".");
xml_output.append(tag);
xml_output.append("\"/>");
} else if (tag == "bool" || tag == "int") {
xml_output.append("<see cref=\"");
xml_output.append(tag);
xml_output.append("\"/>");
} else if (tag == "float") {
xml_output.append("<see cref=\""
#ifdef REAL_T_IS_DOUBLE
"double"
#else
"float"
#endif
"\"/>");
} else if (tag == "Variant") {
// We use System.Object for Variant, so there is no Variant type in C#
xml_output.append("<c>Variant</c>");
} else if (tag == "String") {
xml_output.append("<see cref=\"string\"/>");
} else if (tag == "Nil") {
xml_output.append("<see langword=\"null\"/>");
} else if (tag.begins_with("@")) {
// @GlobalScope, @GDScript, etc
xml_output.append("<c>");
xml_output.append(tag);
xml_output.append("</c>");
} else if (tag == "PoolByteArray") {
xml_output.append("<see cref=\"byte\"/>");
} else if (tag == "PoolIntArray") {
xml_output.append("<see cref=\"int\"/>");
} else if (tag == "PoolRealArray") {
#ifdef REAL_T_IS_DOUBLE
xml_output.append("<see cref=\"double\"/>");
#else
xml_output.append("<see cref=\"float\"/>");
#endif
} else if (tag == "PoolStringArray") {
xml_output.append("<see cref=\"string\"/>");
} else if (tag == "PoolVector2Array") {
xml_output.append("<see cref=\"" BINDINGS_NAMESPACE ".Vector2\"/>");
} else if (tag == "PoolVector3Array") {
xml_output.append("<see cref=\"" BINDINGS_NAMESPACE ".Vector3\"/>");
} else if (tag == "PoolColorArray") {
xml_output.append("<see cref=\"" BINDINGS_NAMESPACE ".Color\"/>");
} else {
const TypeInterface *target_itype = _get_type_or_null(TypeReference(tag));
if (!target_itype) {
target_itype = _get_type_or_null(TypeReference("_" + tag));
}
if (target_itype) {
xml_output.append("<see cref=\"" BINDINGS_NAMESPACE ".");
xml_output.append(target_itype->proxy_name);
xml_output.append("\"/>");
} else {
ERR_PRINTS("Cannot resolve type reference in documentation: " + tag);
xml_output.append("<c>");
xml_output.append(tag);
xml_output.append("</c>");
}
}
pos = brk_end + 1;
} else if (tag == "b") {
// bold is not supported in xml comments
pos = brk_end + 1;
tag_stack.push_front(tag);
} else if (tag == "i") {
// italics is not supported in xml comments
pos = brk_end + 1;
tag_stack.push_front(tag);
} else if (tag == "code") {
xml_output.append("<c>");
code_tag = true;
pos = brk_end + 1;
tag_stack.push_front(tag);
} else if (tag == "codeblock") {
xml_output.append("<code>");
code_tag = true;
pos = brk_end + 1;
tag_stack.push_front(tag);
} else if (tag == "center") {
// center is alignment not supported in xml comments
pos = brk_end + 1;
tag_stack.push_front(tag);
} else if (tag == "br") {
xml_output.append("\n"); // FIXME: Should use <para> instead. Luckily this tag isn't used for now.
pos = brk_end + 1;
} else if (tag == "u") {
// underline is not supported in xml comments
pos = brk_end + 1;
tag_stack.push_front(tag);
} else if (tag == "s") {
// strikethrough is not supported in xml comments
pos = brk_end + 1;
tag_stack.push_front(tag);
} else if (tag == "url") {
int end = bbcode.find("[", brk_end);
if (end == -1)
end = bbcode.length();
String url = bbcode.substr(brk_end + 1, end - brk_end - 1);
xml_output.append("<a href=\"");
xml_output.append(url);
xml_output.append("\">");
xml_output.append(url);
pos = brk_end + 1;
tag_stack.push_front(tag);
} else if (tag.begins_with("url=")) {
String url = tag.substr(4, tag.length());
xml_output.append("<a href=\"");
xml_output.append(url);
xml_output.append("\">");
pos = brk_end + 1;
tag_stack.push_front("url");
} else if (tag == "img") {
int end = bbcode.find("[", brk_end);
if (end == -1)
end = bbcode.length();
String image = bbcode.substr(brk_end + 1, end - brk_end - 1);
// Not supported. Just append the bbcode.
xml_output.append("[img]");
xml_output.append(image);
xml_output.append("[/img]");
pos = end;
tag_stack.push_front(tag);
} else if (tag.begins_with("color=")) {
// Not supported.
pos = brk_end + 1;
tag_stack.push_front("color");
} else if (tag.begins_with("font=")) {
// Not supported.
pos = brk_end + 1;
tag_stack.push_front("font");
} else {
xml_output.append("["); // ignore
pos = brk_pos + 1;
}
}
xml_output.append("</para>");
return xml_output.as_string();
}
int BindingsGenerator::_determine_enum_prefix(const EnumInterface &p_ienum) {
CRASH_COND(p_ienum.constants.empty());
const ConstantInterface &front_iconstant = p_ienum.constants.front()->get();
Vector<String> front_parts = front_iconstant.name.split("_", /* p_allow_empty: */ true);
int candidate_len = front_parts.size() - 1;
if (candidate_len == 0)
return 0;
for (const List<ConstantInterface>::Element *E = p_ienum.constants.front()->next(); E; E = E->next()) {
const ConstantInterface &iconstant = E->get();
Vector<String> parts = iconstant.name.split("_", /* p_allow_empty: */ true);
int i;
for (i = 0; i < candidate_len && i < parts.size(); i++) {
if (front_parts[i] != parts[i]) {
// HARDCODED: Some Flag enums have the prefix 'FLAG_' for everything except 'FLAGS_DEFAULT' (same for 'METHOD_FLAG_' and'METHOD_FLAGS_DEFAULT').
bool hardcoded_exc = (i == candidate_len - 1 && ((front_parts[i] == "FLAGS" && parts[i] == "FLAG") || (front_parts[i] == "FLAG" && parts[i] == "FLAGS")));
if (!hardcoded_exc)
break;
}
}
candidate_len = i;
if (candidate_len == 0)
return 0;
}
return candidate_len;
}
void BindingsGenerator::_apply_prefix_to_enum_constants(BindingsGenerator::EnumInterface &p_ienum, int p_prefix_length) {
if (p_prefix_length > 0) {
for (List<ConstantInterface>::Element *E = p_ienum.constants.front(); E; E = E->next()) {
int curr_prefix_length = p_prefix_length;
ConstantInterface &curr_const = E->get();
String constant_name = curr_const.name;
Vector<String> parts = constant_name.split("_", /* p_allow_empty: */ true);
if (parts.size() <= curr_prefix_length)
continue;
if (parts[curr_prefix_length][0] >= '0' && parts[curr_prefix_length][0] <= '9') {
// The name of enum constants may begin with a numeric digit when strip from the enum prefix,
// so we make the prefix for this constant one word shorter in those cases.
for (curr_prefix_length = curr_prefix_length - 1; curr_prefix_length > 0; curr_prefix_length--) {
if (parts[curr_prefix_length][0] < '0' || parts[curr_prefix_length][0] > '9')
break;
}
}
constant_name = "";
for (int i = curr_prefix_length; i < parts.size(); i++) {
if (i > curr_prefix_length)
constant_name += "_";
constant_name += parts[i];
}
curr_const.proxy_name = snake_to_pascal_case(constant_name, true);
}
}
}
void BindingsGenerator::_generate_method_icalls(const TypeInterface &p_itype) {
for (const List<MethodInterface>::Element *E = p_itype.methods.front(); E; E = E->next()) {
const MethodInterface &imethod = E->get();
if (imethod.is_virtual)
continue;
const TypeInterface *return_type = _get_type_or_placeholder(imethod.return_type);
String im_sig = "IntPtr " CS_PARAM_METHODBIND ", ";
String im_unique_sig = imethod.return_type.cname.operator String() + ",IntPtr,IntPtr";
im_sig += "IntPtr " CS_PARAM_INSTANCE;
// Get arguments information
int i = 0;
for (const List<ArgumentInterface>::Element *F = imethod.arguments.front(); F; F = F->next()) {
const TypeInterface *arg_type = _get_type_or_placeholder(F->get().type);
im_sig += ", ";
im_sig += arg_type->im_type_in;
im_sig += " arg";
im_sig += itos(i + 1);
im_unique_sig += ",";
im_unique_sig += get_unique_sig(*arg_type);
i++;
}
// godot_icall_{argc}_{icallcount}
String icall_method = ICALL_PREFIX;
icall_method += itos(imethod.arguments.size());
icall_method += "_";
icall_method += itos(method_icalls.size());
InternalCall im_icall = InternalCall(p_itype.api_type, icall_method, return_type->im_type_out, im_sig, im_unique_sig);
List<InternalCall>::Element *match = method_icalls.find(im_icall);
if (match) {
if (p_itype.api_type != ClassDB::API_EDITOR)
match->get().editor_only = false;
method_icalls_map.insert(&E->get(), &match->get());
} else {
List<InternalCall>::Element *added = method_icalls.push_back(im_icall);
method_icalls_map.insert(&E->get(), &added->get());
}
}
}
void BindingsGenerator::_generate_global_constants(StringBuilder &p_output) {
// Constants (in partial GD class)
p_output.append("\n#pragma warning disable CS1591 // Disable warning: "
"'Missing XML comment for publicly visible type or member'\n");
p_output.append("namespace " BINDINGS_NAMESPACE "\n" OPEN_BLOCK);
p_output.append(INDENT1 "public static partial class " BINDINGS_GLOBAL_SCOPE_CLASS "\n" INDENT1 "{");
for (const List<ConstantInterface>::Element *E = global_constants.front(); E; E = E->next()) {
const ConstantInterface &iconstant = E->get();
if (iconstant.const_doc && iconstant.const_doc->description.size()) {
String xml_summary = bbcode_to_xml(fix_doc_description(iconstant.const_doc->description), NULL);
Vector<String> summary_lines = xml_summary.length() ? xml_summary.split("\n") : Vector<String>();
if (summary_lines.size()) {
p_output.append(MEMBER_BEGIN "/// <summary>\n");
for (int i = 0; i < summary_lines.size(); i++) {
p_output.append(INDENT2 "/// ");
p_output.append(summary_lines[i]);
p_output.append("\n");
}
p_output.append(INDENT2 "/// </summary>");
}
}
p_output.append(MEMBER_BEGIN "public const int ");
p_output.append(iconstant.proxy_name);
p_output.append(" = ");
p_output.append(itos(iconstant.value));
p_output.append(";");
}
if (!global_constants.empty())
p_output.append("\n");
p_output.append(INDENT1 CLOSE_BLOCK); // end of GD class
// Enums
for (List<EnumInterface>::Element *E = global_enums.front(); E; E = E->next()) {
const EnumInterface &ienum = E->get();
CRASH_COND(ienum.constants.empty());
String enum_proxy_name = ienum.cname.operator String();
bool enum_in_static_class = false;
if (enum_proxy_name.find(".") > 0) {
enum_in_static_class = true;
String enum_class_name = enum_proxy_name.get_slicec('.', 0);
enum_proxy_name = enum_proxy_name.get_slicec('.', 1);
CRASH_COND(enum_class_name != "Variant"); // Hard-coded...
_log("Declaring global enum `%s` inside static class `%s`\n", enum_proxy_name.utf8().get_data(), enum_class_name.utf8().get_data());
p_output.append("\n" INDENT1 "public static partial class ");
p_output.append(enum_class_name);
p_output.append("\n" INDENT1 OPEN_BLOCK);
}
p_output.append("\n" INDENT1 "public enum ");
p_output.append(enum_proxy_name);
p_output.append("\n" INDENT1 OPEN_BLOCK);
for (const List<ConstantInterface>::Element *F = ienum.constants.front(); F; F = F->next()) {
const ConstantInterface &iconstant = F->get();
if (iconstant.const_doc && iconstant.const_doc->description.size()) {
String xml_summary = bbcode_to_xml(fix_doc_description(iconstant.const_doc->description), NULL);
Vector<String> summary_lines = xml_summary.length() ? xml_summary.split("\n") : Vector<String>();
if (summary_lines.size()) {
p_output.append(INDENT2 "/// <summary>\n");
for (int i = 0; i < summary_lines.size(); i++) {
p_output.append(INDENT2 "/// ");
p_output.append(summary_lines[i]);
p_output.append("\n");
}
p_output.append(INDENT2 "/// </summary>\n");
}
}
p_output.append(INDENT2);
p_output.append(iconstant.proxy_name);
p_output.append(" = ");
p_output.append(itos(iconstant.value));
p_output.append(F != ienum.constants.back() ? ",\n" : "\n");
}
p_output.append(INDENT1 CLOSE_BLOCK);
if (enum_in_static_class)
p_output.append(INDENT1 CLOSE_BLOCK);
}
p_output.append(CLOSE_BLOCK); // end of namespace
p_output.append("\n#pragma warning restore CS1591\n");
}
Error BindingsGenerator::generate_cs_core_project(const String &p_proj_dir, Vector<String> &r_compile_items) {
DirAccessRef da = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
ERR_FAIL_COND_V(!da, ERR_CANT_CREATE);
if (!DirAccess::exists(p_proj_dir)) {
Error err = da->make_dir_recursive(p_proj_dir);
ERR_FAIL_COND_V(err != OK, ERR_CANT_CREATE);
}
da->change_dir(p_proj_dir);
da->make_dir("Core");
da->make_dir("ObjectType");
String core_dir = path_join(p_proj_dir, "Core");
String obj_type_dir = path_join(p_proj_dir, "ObjectType");
// Generate source file for global scope constants and enums
{
StringBuilder constants_source;
_generate_global_constants(constants_source);
String output_file = path_join(core_dir, BINDINGS_GLOBAL_SCOPE_CLASS "_constants.cs");
Error save_err = _save_file(output_file, constants_source);
if (save_err != OK)
return save_err;
r_compile_items.push_back(output_file);
}
for (OrderedHashMap<StringName, TypeInterface>::Element E = obj_types.front(); E; E = E.next()) {
const TypeInterface &itype = E.get();
if (itype.api_type == ClassDB::API_EDITOR)
continue;
String output_file = path_join(obj_type_dir, itype.proxy_name + ".cs");
Error err = _generate_cs_type(itype, output_file);
if (err == ERR_SKIP)
continue;
if (err != OK)
return err;
r_compile_items.push_back(output_file);
}
// Generate sources from compressed files
Map<String, GodotCsCompressedFile> compressed_files;
get_compressed_files(compressed_files);
for (Map<String, GodotCsCompressedFile>::Element *E = compressed_files.front(); E; E = E->next()) {
const String &file_name = E->key();
const GodotCsCompressedFile &file_data = E->value();
String output_file = path_join(core_dir, file_name);
Vector<uint8_t> data;
data.resize(file_data.uncompressed_size);
Compression::decompress(data.ptrw(), file_data.uncompressed_size, file_data.data, file_data.compressed_size, Compression::MODE_DEFLATE);
String output_dir = output_file.get_base_dir();
if (!DirAccess::exists(output_dir)) {
Error err = da->make_dir_recursive(ProjectSettings::get_singleton()->globalize_path(output_dir));
ERR_FAIL_COND_V(err != OK, ERR_CANT_CREATE);
}
FileAccessRef file = FileAccess::open(output_file, FileAccess::WRITE);
ERR_FAIL_COND_V(!file, ERR_FILE_CANT_WRITE);
file->store_buffer(data.ptr(), data.size());
file->close();
r_compile_items.push_back(output_file);
}
StringBuilder cs_icalls_content;
cs_icalls_content.append("using System;\n"
"using System.Runtime.CompilerServices;\n"
"\n");
cs_icalls_content.append("namespace " BINDINGS_NAMESPACE "\n" OPEN_BLOCK);
cs_icalls_content.append(INDENT1 "internal static class " BINDINGS_CLASS_NATIVECALLS "\n" INDENT1 OPEN_BLOCK);
cs_icalls_content.append(MEMBER_BEGIN "internal static ulong godot_api_hash = ");
cs_icalls_content.append(String::num_uint64(GDMono::get_singleton()->get_api_core_hash()) + ";\n");
cs_icalls_content.append(MEMBER_BEGIN "internal static uint bindings_version = ");
cs_icalls_content.append(String::num_uint64(BINDINGS_GENERATOR_VERSION) + ";\n");
cs_icalls_content.append(MEMBER_BEGIN "internal static uint cs_glue_version = ");
cs_icalls_content.append(String::num_uint64(CS_GLUE_VERSION) + ";\n");
#define ADD_INTERNAL_CALL(m_icall) \
if (!m_icall.editor_only) { \
cs_icalls_content.append(MEMBER_BEGIN "[MethodImpl(MethodImplOptions.InternalCall)]\n"); \
cs_icalls_content.append(INDENT2 "internal extern static "); \
cs_icalls_content.append(m_icall.im_type_out + " "); \
cs_icalls_content.append(m_icall.name + "("); \
cs_icalls_content.append(m_icall.im_sig + ");\n"); \
}
for (const List<InternalCall>::Element *E = core_custom_icalls.front(); E; E = E->next())
ADD_INTERNAL_CALL(E->get());
for (const List<InternalCall>::Element *E = method_icalls.front(); E; E = E->next())
ADD_INTERNAL_CALL(E->get());
#undef ADD_INTERNAL_CALL
cs_icalls_content.append(INDENT1 CLOSE_BLOCK CLOSE_BLOCK);
String internal_methods_file = path_join(core_dir, BINDINGS_CLASS_NATIVECALLS ".cs");
Error err = _save_file(internal_methods_file, cs_icalls_content);
if (err != OK)
return err;
r_compile_items.push_back(internal_methods_file);
return OK;
}
Error BindingsGenerator::generate_cs_editor_project(const String &p_proj_dir, Vector<String> &r_compile_items) {
DirAccessRef da = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
ERR_FAIL_COND_V(!da, ERR_CANT_CREATE);
if (!DirAccess::exists(p_proj_dir)) {
Error err = da->make_dir_recursive(p_proj_dir);
ERR_FAIL_COND_V(err != OK, ERR_CANT_CREATE);
}
da->change_dir(p_proj_dir);
da->make_dir("Core");
da->make_dir("ObjectType");
String core_dir = path_join(p_proj_dir, "Core");
String obj_type_dir = path_join(p_proj_dir, "ObjectType");
for (OrderedHashMap<StringName, TypeInterface>::Element E = obj_types.front(); E; E = E.next()) {
const TypeInterface &itype = E.get();
if (itype.api_type != ClassDB::API_EDITOR)
continue;
String output_file = path_join(obj_type_dir, itype.proxy_name + ".cs");
Error err = _generate_cs_type(itype, output_file);
if (err == ERR_SKIP)
continue;
if (err != OK)
return err;
r_compile_items.push_back(output_file);
}
StringBuilder cs_icalls_content;
cs_icalls_content.append("using System;\n"
"using System.Runtime.CompilerServices;\n"
"\n");
cs_icalls_content.append("namespace " BINDINGS_NAMESPACE "\n" OPEN_BLOCK);
cs_icalls_content.append(INDENT1 "internal static class " BINDINGS_CLASS_NATIVECALLS_EDITOR "\n" INDENT1 OPEN_BLOCK);
cs_icalls_content.append(INDENT2 "internal static ulong godot_api_hash = ");
cs_icalls_content.append(String::num_uint64(GDMono::get_singleton()->get_api_editor_hash()) + ";\n");
cs_icalls_content.append(INDENT2 "internal static uint bindings_version = ");
cs_icalls_content.append(String::num_uint64(BINDINGS_GENERATOR_VERSION) + ";\n");
cs_icalls_content.append(INDENT2 "internal static uint cs_glue_version = ");
cs_icalls_content.append(String::num_uint64(CS_GLUE_VERSION) + ";\n");
cs_icalls_content.append("\n");
#define ADD_INTERNAL_CALL(m_icall) \
if (m_icall.editor_only) { \
cs_icalls_content.append(INDENT2 "[MethodImpl(MethodImplOptions.InternalCall)]\n"); \
cs_icalls_content.append(INDENT2 "internal extern static "); \
cs_icalls_content.append(m_icall.im_type_out + " "); \
cs_icalls_content.append(m_icall.name + "("); \
cs_icalls_content.append(m_icall.im_sig + ");\n"); \
}
for (const List<InternalCall>::Element *E = editor_custom_icalls.front(); E; E = E->next())
ADD_INTERNAL_CALL(E->get());
for (const List<InternalCall>::Element *E = method_icalls.front(); E; E = E->next())
ADD_INTERNAL_CALL(E->get());
#undef ADD_INTERNAL_CALL
cs_icalls_content.append(INDENT1 CLOSE_BLOCK CLOSE_BLOCK);
String internal_methods_file = path_join(core_dir, BINDINGS_CLASS_NATIVECALLS_EDITOR ".cs");
Error err = _save_file(internal_methods_file, cs_icalls_content);
if (err != OK)
return err;
r_compile_items.push_back(internal_methods_file);
return OK;
}
Error BindingsGenerator::generate_cs_api(const String &p_output_dir) {
String output_dir = DirAccess::get_full_path(p_output_dir, DirAccess::ACCESS_FILESYSTEM);
DirAccessRef da = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
ERR_FAIL_COND_V(!da, ERR_CANT_CREATE);
if (!DirAccess::exists(output_dir)) {
Error err = da->make_dir_recursive(output_dir);
ERR_FAIL_COND_V(err != OK, ERR_CANT_CREATE);
}
Error proj_err;
// Generate GodotSharp source files
String core_proj_dir = output_dir.plus_file(CORE_API_ASSEMBLY_NAME);
Vector<String> core_compile_items;
proj_err = generate_cs_core_project(core_proj_dir, core_compile_items);
if (proj_err != OK) {
ERR_PRINT("Generation of the Core API C# project failed");
return proj_err;
}
// Generate GodotSharpEditor source files
String editor_proj_dir = output_dir.plus_file(EDITOR_API_ASSEMBLY_NAME);
Vector<String> editor_compile_items;
proj_err = generate_cs_editor_project(editor_proj_dir, editor_compile_items);
if (proj_err != OK) {
ERR_PRINT("Generation of the Editor API C# project failed");
return proj_err;
}
// Generate solution
if (!CSharpProject::generate_api_solution(output_dir,
core_proj_dir, core_compile_items, editor_proj_dir, editor_compile_items)) {
return ERR_CANT_CREATE;
}
_log("The solution for the Godot API was generated successfully\n");
return OK;
}
// FIXME: There are some members that hide other inherited members.
// - In the case of both members being the same kind, the new one must be declared
// explicitly as `new` to avoid the warning (and we must print a message about it).
// - In the case of both members being of a different kind, then the new one must
// be renamed to avoid the name collision (and we must print a warning about it).
// - Csc warning e.g.:
// ObjectType/LineEdit.cs(140,38): warning CS0108: 'LineEdit.FocusMode' hides inherited member 'Control.FocusMode'. Use the new keyword if hiding was intended.
Error BindingsGenerator::_generate_cs_type(const TypeInterface &itype, const String &p_output_file) {
CRASH_COND(!itype.is_object_type);
bool is_derived_type = itype.base_name != StringName();
if (!is_derived_type) {
// Some Godot.Object assertions
CRASH_COND(itype.cname != name_cache.type_Object);
CRASH_COND(!itype.is_instantiable);
CRASH_COND(itype.api_type != ClassDB::API_CORE);
CRASH_COND(itype.is_reference);
CRASH_COND(itype.is_singleton);
}
List<InternalCall> &custom_icalls = itype.api_type == ClassDB::API_EDITOR ? editor_custom_icalls : core_custom_icalls;
_log("Generating %s.cs...\n", itype.proxy_name.utf8().get_data());
String ctor_method(ICALL_PREFIX + itype.proxy_name + "_Ctor"); // Used only for derived types
StringBuilder output;
output.append("using System;\n"); // IntPtr
output.append("using System.Diagnostics;\n"); // DebuggerBrowsable
output.append("\n"
"#pragma warning disable CS1591 // Disable warning: "
"'Missing XML comment for publicly visible type or member'\n"
"#pragma warning disable CS1573 // Disable warning: "
"'Parameter has no matching param tag in the XML comment'\n");
output.append("\nnamespace " BINDINGS_NAMESPACE "\n" OPEN_BLOCK);
const DocData::ClassDoc *class_doc = itype.class_doc;
if (class_doc && class_doc->description.size()) {
String xml_summary = bbcode_to_xml(fix_doc_description(class_doc->description), &itype);
Vector<String> summary_lines = xml_summary.length() ? xml_summary.split("\n") : Vector<String>();
if (summary_lines.size()) {
output.append(INDENT1 "/// <summary>\n");
for (int i = 0; i < summary_lines.size(); i++) {
output.append(INDENT1 "/// ");
output.append(summary_lines[i]);
output.append("\n");
}
output.append(INDENT1 "/// </summary>\n");
}
}
output.append(INDENT1 "public ");
if (itype.is_singleton) {
output.append("static partial class ");
} else {
output.append(itype.is_instantiable ? "partial class " : "abstract partial class ");
}
output.append(itype.proxy_name);
if (itype.is_singleton) {
output.append("\n");
} else if (is_derived_type) {
if (obj_types.has(itype.base_name)) {
output.append(" : ");
output.append(obj_types[itype.base_name].proxy_name);
output.append("\n");
} else {
ERR_PRINTS("Base type '" + itype.base_name.operator String() + "' does not exist, for class " + itype.name);
return ERR_INVALID_DATA;
}
}
output.append(INDENT1 "{");
if (class_doc) {
// Add constants
for (const List<ConstantInterface>::Element *E = itype.constants.front(); E; E = E->next()) {
const ConstantInterface &iconstant = E->get();
if (iconstant.const_doc && iconstant.const_doc->description.size()) {
String xml_summary = bbcode_to_xml(fix_doc_description(iconstant.const_doc->description), &itype);
Vector<String> summary_lines = xml_summary.length() ? xml_summary.split("\n") : Vector<String>();
if (summary_lines.size()) {
output.append(MEMBER_BEGIN "/// <summary>\n");
for (int i = 0; i < summary_lines.size(); i++) {
output.append(INDENT2 "/// ");
output.append(summary_lines[i]);
output.append("\n");
}
output.append(INDENT2 "/// </summary>");
}
}
output.append(MEMBER_BEGIN "public const int ");
output.append(iconstant.proxy_name);
output.append(" = ");
output.append(itos(iconstant.value));
output.append(";");
}
if (itype.constants.size())
output.append("\n");
// Add enums
for (const List<EnumInterface>::Element *E = itype.enums.front(); E; E = E->next()) {
const EnumInterface &ienum = E->get();
ERR_FAIL_COND_V(ienum.constants.empty(), ERR_BUG);
output.append(MEMBER_BEGIN "public enum ");
output.append(ienum.cname.operator String());
output.append(MEMBER_BEGIN OPEN_BLOCK);
for (const List<ConstantInterface>::Element *F = ienum.constants.front(); F; F = F->next()) {
const ConstantInterface &iconstant = F->get();
if (iconstant.const_doc && iconstant.const_doc->description.size()) {
String xml_summary = bbcode_to_xml(fix_doc_description(iconstant.const_doc->description), &itype);
Vector<String> summary_lines = xml_summary.length() ? xml_summary.split("\n") : Vector<String>();
if (summary_lines.size()) {
output.append(INDENT3 "/// <summary>\n");
for (int i = 0; i < summary_lines.size(); i++) {
output.append(INDENT3 "/// ");
output.append(summary_lines[i]);
output.append("\n");
}
output.append(INDENT3 "/// </summary>\n");
}
}
output.append(INDENT3);
output.append(iconstant.proxy_name);
output.append(" = ");
output.append(itos(iconstant.value));
output.append(F != ienum.constants.back() ? ",\n" : "\n");
}
output.append(INDENT2 CLOSE_BLOCK);
}
// Add properties
for (const List<PropertyInterface>::Element *E = itype.properties.front(); E; E = E->next()) {
const PropertyInterface &iprop = E->get();
Error prop_err = _generate_cs_property(itype, iprop, output);
if (prop_err != OK) {
ERR_EXPLAIN("Failed to generate property '" + iprop.cname.operator String() +
"' for class '" + itype.name + "'");
ERR_FAIL_V(prop_err);
}
}
}
// TODO: BINDINGS_NATIVE_NAME_FIELD should be StringName, once we support it in C#
if (itype.is_singleton) {
// Add the type name and the singleton pointer as static fields
output.append(MEMBER_BEGIN "private static Godot.Object singleton;\n");
output.append(MEMBER_BEGIN "public static Godot.Object Singleton\n" INDENT2 "{\n" INDENT3
"get\n" INDENT3 "{\n" INDENT4 "if (singleton == null)\n" INDENT5
"singleton = Engine.GetSingleton(typeof(");
output.append(itype.proxy_name);
output.append(").Name);\n" INDENT4 "return singleton;\n" INDENT3 "}\n" INDENT2 "}\n");
output.append(MEMBER_BEGIN "private const string " BINDINGS_NATIVE_NAME_FIELD " = \"");
output.append(itype.name);
output.append("\";\n");
output.append(INDENT2 "internal static IntPtr " BINDINGS_PTR_FIELD " = ");
output.append(itype.api_type == ClassDB::API_EDITOR ? BINDINGS_CLASS_NATIVECALLS_EDITOR : BINDINGS_CLASS_NATIVECALLS);
output.append("." ICALL_PREFIX);
output.append(itype.name);
output.append(SINGLETON_ICALL_SUFFIX "();\n");
} else if (is_derived_type) {
// Add member fields
output.append(MEMBER_BEGIN "private const string " BINDINGS_NATIVE_NAME_FIELD " = \"");
output.append(itype.name);
output.append("\";\n");
// Add default constructor
if (itype.is_instantiable) {
output.append(MEMBER_BEGIN "public ");
output.append(itype.proxy_name);
output.append("() : this(");
output.append(itype.memory_own ? "true" : "false");
// The default constructor may also be called by the engine when instancing existing native objects
// The engine will initialize the pointer field of the managed side before calling the constructor
// This is why we only allocate a new native object from the constructor if the pointer field is not set
output.append(")\n" OPEN_BLOCK_L2 "if (" BINDINGS_PTR_FIELD " == IntPtr.Zero)\n" INDENT4 BINDINGS_PTR_FIELD " = ");
output.append(itype.api_type == ClassDB::API_EDITOR ? BINDINGS_CLASS_NATIVECALLS_EDITOR : BINDINGS_CLASS_NATIVECALLS);
output.append("." + ctor_method);
output.append("(this);\n" CLOSE_BLOCK_L2);
} else {
// Hide the constructor
output.append(MEMBER_BEGIN "internal ");
output.append(itype.proxy_name);
output.append("() {}\n");
}
// Add.. em.. trick constructor. Sort of.
output.append(MEMBER_BEGIN "internal ");
output.append(itype.proxy_name);
output.append("(bool " CS_FIELD_MEMORYOWN ") : base(" CS_FIELD_MEMORYOWN ") {}\n");
}
int method_bind_count = 0;
for (const List<MethodInterface>::Element *E = itype.methods.front(); E; E = E->next()) {
const MethodInterface &imethod = E->get();
Error method_err = _generate_cs_method(itype, imethod, method_bind_count, output);
if (method_err != OK) {
ERR_EXPLAIN("Failed to generate method '" + imethod.name + "' for class '" + itype.name + "'");
ERR_FAIL_V(method_err);
}
}
if (itype.is_singleton) {
InternalCall singleton_icall = InternalCall(itype.api_type, ICALL_PREFIX + itype.name + SINGLETON_ICALL_SUFFIX, "IntPtr");
if (!find_icall_by_name(singleton_icall.name, custom_icalls))
custom_icalls.push_back(singleton_icall);
}
if (is_derived_type && itype.is_instantiable) {
InternalCall ctor_icall = InternalCall(itype.api_type, ctor_method, "IntPtr", itype.proxy_name + " obj");
if (!find_icall_by_name(ctor_icall.name, custom_icalls))
custom_icalls.push_back(ctor_icall);
}
output.append(INDENT1 CLOSE_BLOCK /* class */
CLOSE_BLOCK /* namespace */);
output.append("\n"
"#pragma warning restore CS1591\n"
"#pragma warning restore CS1573\n");
return _save_file(p_output_file, output);
}
Error BindingsGenerator::_generate_cs_property(const BindingsGenerator::TypeInterface &p_itype, const PropertyInterface &p_iprop, StringBuilder &p_output) {
const MethodInterface *setter = p_itype.find_method_by_name(p_iprop.setter);
// Search it in base types too
const TypeInterface *current_type = &p_itype;
while (!setter && current_type->base_name != StringName()) {
OrderedHashMap<StringName, TypeInterface>::Element base_match = obj_types.find(current_type->base_name);
ERR_FAIL_COND_V(!base_match, ERR_BUG);
current_type = &base_match.get();
setter = current_type->find_method_by_name(p_iprop.setter);
}
const MethodInterface *getter = p_itype.find_method_by_name(p_iprop.getter);
// Search it in base types too
current_type = &p_itype;
while (!getter && current_type->base_name != StringName()) {
OrderedHashMap<StringName, TypeInterface>::Element base_match = obj_types.find(current_type->base_name);
ERR_FAIL_COND_V(!base_match, ERR_BUG);
current_type = &base_match.get();
getter = current_type->find_method_by_name(p_iprop.getter);
}
ERR_FAIL_COND_V(!setter && !getter, ERR_BUG);
if (setter) {
int setter_argc = p_iprop.index != -1 ? 2 : 1;
ERR_FAIL_COND_V(setter->arguments.size() != setter_argc, ERR_BUG);
}
if (getter) {
int getter_argc = p_iprop.index != -1 ? 1 : 0;
ERR_FAIL_COND_V(getter->arguments.size() != getter_argc, ERR_BUG);
}
if (getter && setter) {
ERR_FAIL_COND_V(getter->return_type.cname != setter->arguments.back()->get().type.cname, ERR_BUG);
}
const TypeReference &proptype_name = getter ? getter->return_type : setter->arguments.back()->get().type;
const TypeInterface *prop_itype = _get_type_or_null(proptype_name);
ERR_FAIL_NULL_V(prop_itype, ERR_BUG); // Property type not found
if (p_iprop.prop_doc && p_iprop.prop_doc->description.size()) {
String xml_summary = bbcode_to_xml(fix_doc_description(p_iprop.prop_doc->description), &p_itype);
Vector<String> summary_lines = xml_summary.length() ? xml_summary.split("\n") : Vector<String>();
if (summary_lines.size()) {
p_output.append(MEMBER_BEGIN "/// <summary>\n");
for (int i = 0; i < summary_lines.size(); i++) {
p_output.append(INDENT2 "/// ");
p_output.append(summary_lines[i]);
p_output.append("\n");
}
p_output.append(INDENT2 "/// </summary>");
}
}
p_output.append(MEMBER_BEGIN "public ");
if (p_itype.is_singleton)
p_output.append("static ");
p_output.append(prop_itype->cs_type);
p_output.append(" ");
p_output.append(p_iprop.proxy_name);
p_output.append("\n" INDENT2 OPEN_BLOCK);
if (getter) {
p_output.append(INDENT3 "get\n"
// TODO Remove this once we make accessor methods private/internal (they will no longer be marked as obsolete after that)
"#pragma warning disable CS0618 // Disable warning about obsolete method\n"
OPEN_BLOCK_L3);
p_output.append("return ");
p_output.append(getter->proxy_name + "(");
if (p_iprop.index != -1) {
const ArgumentInterface &idx_arg = getter->arguments.front()->get();
if (idx_arg.type.cname != name_cache.type_int) {
// Assume the index parameter is an enum
const TypeInterface *idx_arg_type = _get_type_or_null(idx_arg.type);
CRASH_COND(idx_arg_type == NULL);
p_output.append("(" + idx_arg_type->proxy_name + ")" + itos(p_iprop.index));
} else {
p_output.append(itos(p_iprop.index));
}
}
p_output.append(");\n"
CLOSE_BLOCK_L3
// TODO Remove this once we make accessor methods private/internal (they will no longer be marked as obsolete after that)
"#pragma warning restore CS0618\n");
}
if (setter) {
p_output.append(INDENT3 "set\n"
// TODO Remove this once we make accessor methods private/internal (they will no longer be marked as obsolete after that)
"#pragma warning disable CS0618 // Disable warning about obsolete method\n"
OPEN_BLOCK_L3);
p_output.append(setter->proxy_name + "(");
if (p_iprop.index != -1) {
const ArgumentInterface &idx_arg = setter->arguments.front()->get();
if (idx_arg.type.cname != name_cache.type_int) {
// Assume the index parameter is an enum
const TypeInterface *idx_arg_type = _get_type_or_null(idx_arg.type);
CRASH_COND(idx_arg_type == NULL);
p_output.append("(" + idx_arg_type->proxy_name + ")" + itos(p_iprop.index) + ", ");
} else {
p_output.append(itos(p_iprop.index) + ", ");
}
}
p_output.append("value);\n"
CLOSE_BLOCK_L3
// TODO Remove this once we make accessor methods private/internal (they will no longer be marked as obsolete after that)
"#pragma warning restore CS0618\n");
}
p_output.append(CLOSE_BLOCK_L2);
return OK;
}
Error BindingsGenerator::_generate_cs_method(const BindingsGenerator::TypeInterface &p_itype, const BindingsGenerator::MethodInterface &p_imethod, int &p_method_bind_count, StringBuilder &p_output) {
const TypeInterface *return_type = _get_type_or_placeholder(p_imethod.return_type);
String method_bind_field = "method_bind_" + itos(p_method_bind_count);
String arguments_sig;
String cs_in_statements;
String icall_params = method_bind_field + ", ";
icall_params += sformat(p_itype.cs_in, "this");
StringBuilder default_args_doc;
// Retrieve information from the arguments
for (const List<ArgumentInterface>::Element *F = p_imethod.arguments.front(); F; F = F->next()) {
const ArgumentInterface &iarg = F->get();
const TypeInterface *arg_type = _get_type_or_placeholder(iarg.type);
// Add the current arguments to the signature
// If the argument has a default value which is not a constant, we will make it Nullable
{
if (F != p_imethod.arguments.front())
arguments_sig += ", ";
if (iarg.def_param_mode == ArgumentInterface::NULLABLE_VAL)
arguments_sig += "Nullable<";
arguments_sig += arg_type->cs_type;
if (iarg.def_param_mode == ArgumentInterface::NULLABLE_VAL)
arguments_sig += "> ";
else
arguments_sig += " ";
arguments_sig += iarg.name;
if (iarg.default_argument.size()) {
if (iarg.def_param_mode != ArgumentInterface::CONSTANT)
arguments_sig += " = null";
else
arguments_sig += " = " + sformat(iarg.default_argument, arg_type->cs_type);
}
}
icall_params += ", ";
if (iarg.default_argument.size() && iarg.def_param_mode != ArgumentInterface::CONSTANT) {
// The default value of an argument must be constant. Otherwise we make it Nullable and do the following:
// Type arg_in = arg.HasValue ? arg.Value : <non-const default value>;
String arg_in = iarg.name;
arg_in += "_in";
cs_in_statements += arg_type->cs_type;
cs_in_statements += " ";
cs_in_statements += arg_in;
cs_in_statements += " = ";
cs_in_statements += iarg.name;
if (iarg.def_param_mode == ArgumentInterface::NULLABLE_VAL)
cs_in_statements += ".HasValue ? ";
else
cs_in_statements += " != null ? ";
cs_in_statements += iarg.name;
if (iarg.def_param_mode == ArgumentInterface::NULLABLE_VAL)
cs_in_statements += ".Value : ";
else
cs_in_statements += " : ";
String def_arg = sformat(iarg.default_argument, arg_type->cs_type);
cs_in_statements += def_arg;
cs_in_statements += ";\n" INDENT3;
icall_params += arg_type->cs_in.empty() ? arg_in : sformat(arg_type->cs_in, arg_in);
// Apparently the name attribute must not include the @
String param_tag_name = iarg.name.begins_with("@") ? iarg.name.substr(1, iarg.name.length()) : iarg.name;
default_args_doc.append(INDENT2 "/// <param name=\"" + param_tag_name + "\">If the parameter is null, then the default value is " + def_arg + "</param>\n");
} else {
icall_params += arg_type->cs_in.empty() ? iarg.name : sformat(arg_type->cs_in, iarg.name);
}
}
// Generate method
{
if (!p_imethod.is_virtual && !p_imethod.requires_object_call) {
p_output.append(MEMBER_BEGIN "[DebuggerBrowsable(DebuggerBrowsableState.Never)]" MEMBER_BEGIN "private static IntPtr ");
p_output.append(method_bind_field + " = Object." ICALL_GET_METHODBIND "(" BINDINGS_NATIVE_NAME_FIELD ", \"");
p_output.append(p_imethod.name);
p_output.append("\");\n");
}
if (p_imethod.method_doc && p_imethod.method_doc->description.size()) {
String xml_summary = bbcode_to_xml(fix_doc_description(p_imethod.method_doc->description), &p_itype);
Vector<String> summary_lines = xml_summary.length() ? xml_summary.split("\n") : Vector<String>();
if (summary_lines.size() || default_args_doc.get_string_length()) {
p_output.append(MEMBER_BEGIN "/// <summary>\n");
for (int i = 0; i < summary_lines.size(); i++) {
p_output.append(INDENT2 "/// ");
p_output.append(summary_lines[i]);
p_output.append("\n");
}
p_output.append(default_args_doc.as_string());
p_output.append(INDENT2 "/// </summary>");
}
}
if (!p_imethod.is_internal) {
p_output.append(MEMBER_BEGIN "[GodotMethod(\"");
p_output.append(p_imethod.name);
p_output.append("\")]");
}
if (p_imethod.is_deprecated) {
if (p_imethod.deprecation_message.empty())
WARN_PRINTS("An empty deprecation message is discouraged. Method: " + p_imethod.proxy_name);
p_output.append(MEMBER_BEGIN "[Obsolete(\"");
p_output.append(p_imethod.deprecation_message);
p_output.append("\")]");
}
p_output.append(MEMBER_BEGIN);
p_output.append(p_imethod.is_internal ? "internal " : "public ");
if (p_itype.is_singleton) {
p_output.append("static ");
} else if (p_imethod.is_virtual) {
p_output.append("virtual ");
}
p_output.append(return_type->cs_type + " ");
p_output.append(p_imethod.proxy_name + "(");
p_output.append(arguments_sig + ")\n" OPEN_BLOCK_L2);
if (p_imethod.is_virtual) {
// Godot virtual method must be overridden, therefore we return a default value by default.
if (return_type->cname == name_cache.type_void) {
p_output.append("return;\n" CLOSE_BLOCK_L2);
} else {
p_output.append("return default(");
p_output.append(return_type->cs_type);
p_output.append(");\n" CLOSE_BLOCK_L2);
}
return OK; // Won't increment method bind count
}
if (p_imethod.requires_object_call) {
// Fallback to Godot's object.Call(string, params)
p_output.append(CS_METHOD_CALL "(\"");
p_output.append(p_imethod.name);
p_output.append("\"");
for (const List<ArgumentInterface>::Element *F = p_imethod.arguments.front(); F; F = F->next()) {
p_output.append(", ");
p_output.append(F->get().name);
}
p_output.append(");\n" CLOSE_BLOCK_L2);
return OK; // Won't increment method bind count
}
const Map<const MethodInterface *, const InternalCall *>::Element *match = method_icalls_map.find(&p_imethod);
ERR_FAIL_NULL_V(match, ERR_BUG);
const InternalCall *im_icall = match->value();
String im_call = im_icall->editor_only ? BINDINGS_CLASS_NATIVECALLS_EDITOR : BINDINGS_CLASS_NATIVECALLS;
im_call += "." + im_icall->name + "(" + icall_params + ")";
if (p_imethod.arguments.size())
p_output.append(cs_in_statements);
if (return_type->cname == name_cache.type_void) {
p_output.append(im_call + ";\n");
} else if (return_type->cs_out.empty()) {
p_output.append("return " + im_call + ";\n");
} else {
p_output.append(sformat(return_type->cs_out, im_call, return_type->cs_type, return_type->im_type_out));
p_output.append("\n");
}
p_output.append(CLOSE_BLOCK_L2);
}
p_method_bind_count++;
return OK;
}
Error BindingsGenerator::generate_glue(const String &p_output_dir) {
bool dir_exists = DirAccess::exists(p_output_dir);
ERR_EXPLAIN("The output directory does not exist.");
ERR_FAIL_COND_V(!dir_exists, ERR_FILE_BAD_PATH);
StringBuilder output;
output.append("/* THIS FILE IS GENERATED DO NOT EDIT */\n");
output.append("#include \"" GLUE_HEADER_FILE "\"\n");
output.append("\n#ifdef MONO_GLUE_ENABLED\n");
generated_icall_funcs.clear();
for (OrderedHashMap<StringName, TypeInterface>::Element type_elem = obj_types.front(); type_elem; type_elem = type_elem.next()) {
const TypeInterface &itype = type_elem.get();
bool is_derived_type = itype.base_name != StringName();
if (!is_derived_type) {
// Some Object assertions
CRASH_COND(itype.cname != name_cache.type_Object);
CRASH_COND(!itype.is_instantiable);
CRASH_COND(itype.api_type != ClassDB::API_CORE);
CRASH_COND(itype.is_reference);
CRASH_COND(itype.is_singleton);
}
List<InternalCall> &custom_icalls = itype.api_type == ClassDB::API_EDITOR ? editor_custom_icalls : core_custom_icalls;
OS::get_singleton()->print("Generating %s...\n", itype.name.utf8().get_data());
String ctor_method(ICALL_PREFIX + itype.proxy_name + "_Ctor"); // Used only for derived types
for (const List<MethodInterface>::Element *E = itype.methods.front(); E; E = E->next()) {
const MethodInterface &imethod = E->get();
Error method_err = _generate_glue_method(itype, imethod, output);
if (method_err != OK) {
ERR_EXPLAIN("Failed to generate method '" + imethod.name + "' for class '" + itype.name + "'");
ERR_FAIL_V(method_err);
}
}
if (itype.is_singleton) {
String singleton_icall_name = ICALL_PREFIX + itype.name + SINGLETON_ICALL_SUFFIX;
InternalCall singleton_icall = InternalCall(itype.api_type, singleton_icall_name, "IntPtr");
if (!find_icall_by_name(singleton_icall.name, custom_icalls))
custom_icalls.push_back(singleton_icall);
output.append("Object* ");
output.append(singleton_icall_name);
output.append("() " OPEN_BLOCK "\treturn Engine::get_singleton()->get_singleton_object(\"");
output.append(itype.proxy_name);
output.append("\");\n" CLOSE_BLOCK "\n");
}
if (is_derived_type && itype.is_instantiable) {
InternalCall ctor_icall = InternalCall(itype.api_type, ctor_method, "IntPtr", itype.proxy_name + " obj");
if (!find_icall_by_name(ctor_icall.name, custom_icalls))
custom_icalls.push_back(ctor_icall);
output.append("Object* ");
output.append(ctor_method);
output.append("(MonoObject* obj) " OPEN_BLOCK
"\t" C_MACRO_OBJECT_CONSTRUCT "(instance, \"");
output.append(itype.name);
output.append("\");\n"
"\t" C_METHOD_TIE_MANAGED_TO_UNMANAGED "(obj, instance);\n"
"\treturn instance;\n" CLOSE_BLOCK "\n");
}
}
output.append("namespace GodotSharpBindings\n" OPEN_BLOCK "\n");
output.append("uint64_t get_core_api_hash() { return ");
output.append(String::num_uint64(GDMono::get_singleton()->get_api_core_hash()) + "U; }\n");
output.append("#ifdef TOOLS_ENABLED\n"
"uint64_t get_editor_api_hash() { return ");
output.append(String::num_uint64(GDMono::get_singleton()->get_api_editor_hash()) + "U; }\n");
output.append("#endif // TOOLS_ENABLED\n");
output.append("uint32_t get_bindings_version() { return ");
output.append(String::num_uint64(BINDINGS_GENERATOR_VERSION) + "; }\n");
output.append("\nvoid register_generated_icalls() " OPEN_BLOCK);
output.append("\tgodot_register_glue_header_icalls();\n");
#define ADD_INTERNAL_CALL_REGISTRATION(m_icall) \
{ \
output.append("\tmono_add_internal_call("); \
output.append("\"" BINDINGS_NAMESPACE "."); \
output.append(m_icall.editor_only ? BINDINGS_CLASS_NATIVECALLS_EDITOR : BINDINGS_CLASS_NATIVECALLS); \
output.append("::"); \
output.append(m_icall.name); \
output.append("\", (void*)"); \
output.append(m_icall.name); \
output.append(");\n"); \
}
bool tools_sequence = false;
for (const List<InternalCall>::Element *E = core_custom_icalls.front(); E; E = E->next()) {
if (tools_sequence) {
if (!E->get().editor_only) {
tools_sequence = false;
output.append("#endif\n");
}
} else {
if (E->get().editor_only) {
output.append("#ifdef TOOLS_ENABLED\n");
tools_sequence = true;
}
}
ADD_INTERNAL_CALL_REGISTRATION(E->get());
}
if (tools_sequence) {
tools_sequence = false;
output.append("#endif\n");
}
output.append("#ifdef TOOLS_ENABLED\n");
for (const List<InternalCall>::Element *E = editor_custom_icalls.front(); E; E = E->next())
ADD_INTERNAL_CALL_REGISTRATION(E->get());
output.append("#endif // TOOLS_ENABLED\n");
for (const List<InternalCall>::Element *E = method_icalls.front(); E; E = E->next()) {
if (tools_sequence) {
if (!E->get().editor_only) {
tools_sequence = false;
output.append("#endif\n");
}
} else {
if (E->get().editor_only) {
output.append("#ifdef TOOLS_ENABLED\n");
tools_sequence = true;
}
}
ADD_INTERNAL_CALL_REGISTRATION(E->get());
}
if (tools_sequence) {
tools_sequence = false;
output.append("#endif\n");
}
#undef ADD_INTERNAL_CALL_REGISTRATION
output.append(CLOSE_BLOCK "\n} // namespace GodotSharpBindings\n");
output.append("\n#endif // MONO_GLUE_ENABLED\n");
Error save_err = _save_file(path_join(p_output_dir, "mono_glue.gen.cpp"), output);
if (save_err != OK)
return save_err;
OS::get_singleton()->print("Mono glue generated successfully\n");
return OK;
}
uint32_t BindingsGenerator::get_version() {
return BINDINGS_GENERATOR_VERSION;
}
Error BindingsGenerator::_save_file(const String &p_path, const StringBuilder &p_content) {
FileAccessRef file = FileAccess::open(p_path, FileAccess::WRITE);
ERR_EXPLAIN("Cannot open file: " + p_path);
ERR_FAIL_COND_V(!file, ERR_FILE_CANT_WRITE);
file->store_string(p_content.as_string());
file->close();
return OK;
}
Error BindingsGenerator::_generate_glue_method(const BindingsGenerator::TypeInterface &p_itype, const BindingsGenerator::MethodInterface &p_imethod, StringBuilder &p_output) {
if (p_imethod.is_virtual)
return OK; // Ignore
bool ret_void = p_imethod.return_type.cname == name_cache.type_void;
const TypeInterface *return_type = _get_type_or_placeholder(p_imethod.return_type);
String argc_str = itos(p_imethod.arguments.size());
String c_func_sig = "MethodBind* " CS_PARAM_METHODBIND ", " + p_itype.c_type_in + " " CS_PARAM_INSTANCE;
String c_in_statements;
String c_args_var_content;
// Get arguments information
int i = 0;
for (const List<ArgumentInterface>::Element *F = p_imethod.arguments.front(); F; F = F->next()) {
const ArgumentInterface &iarg = F->get();
const TypeInterface *arg_type = _get_type_or_placeholder(iarg.type);
String c_param_name = "arg" + itos(i + 1);
if (p_imethod.is_vararg) {
if (i < p_imethod.arguments.size() - 1) {
c_in_statements += sformat(arg_type->c_in.size() ? arg_type->c_in : TypeInterface::DEFAULT_VARARG_C_IN, "Variant", c_param_name);
c_in_statements += "\t" C_LOCAL_PTRCALL_ARGS ".set(";
c_in_statements += itos(i);
c_in_statements += sformat(", &%s_in);\n", c_param_name);
}
} else {
if (i > 0)
c_args_var_content += ", ";
if (arg_type->c_in.size())
c_in_statements += sformat(arg_type->c_in, arg_type->c_type, c_param_name);
c_args_var_content += sformat(arg_type->c_arg_in, c_param_name);
}
c_func_sig += ", ";
c_func_sig += arg_type->c_type_in;
c_func_sig += " ";
c_func_sig += c_param_name;
i++;
}
const Map<const MethodInterface *, const InternalCall *>::Element *match = method_icalls_map.find(&p_imethod);
ERR_FAIL_NULL_V(match, ERR_BUG);
const InternalCall *im_icall = match->value();
String icall_method = im_icall->name;
if (!generated_icall_funcs.find(im_icall)) {
generated_icall_funcs.push_back(im_icall);
if (im_icall->editor_only)
p_output.append("#ifdef TOOLS_ENABLED\n");
// Generate icall function
p_output.append(ret_void ? "void " : return_type->c_type_out + " ");
p_output.append(icall_method);
p_output.append("(");
p_output.append(c_func_sig);
p_output.append(") " OPEN_BLOCK);
String fail_ret = ret_void ? "" : ", " + (return_type->c_type_out.ends_with("*") ? "NULL" : return_type->c_type_out + "()");
if (!ret_void) {
String ptrcall_return_type;
String initialization;
if (p_imethod.is_vararg && return_type->cname != name_cache.type_Variant) {
// VarArg methods always return Variant, but there are some cases in which MethodInfo provides
// a specific return type. We trust this information is valid. We need a temporary local to keep
// the Variant alive until the method returns. Otherwise, if the returned Variant holds a RefPtr,
// it could be deleted too early. This is the case with GDScript.new() which returns OBJECT.
// Alternatively, we could just return Variant, but that would result in a worse API.
p_output.append("\tVariant " C_LOCAL_VARARG_RET ";\n");
}
if (return_type->is_object_type) {
ptrcall_return_type = return_type->is_reference ? "Ref<Reference>" : return_type->c_type;
initialization = return_type->is_reference ? "" : " = NULL";
} else {
ptrcall_return_type = return_type->c_type;
}
p_output.append("\t" + ptrcall_return_type);
p_output.append(" " C_LOCAL_RET);
p_output.append(initialization + ";\n");
p_output.append("\tERR_FAIL_NULL_V(" CS_PARAM_INSTANCE);
p_output.append(fail_ret);
p_output.append(");\n");
} else {
p_output.append("\tERR_FAIL_NULL(" CS_PARAM_INSTANCE ");\n");
}
if (p_imethod.arguments.size()) {
if (p_imethod.is_vararg) {
String vararg_arg = "arg" + argc_str;
String real_argc_str = itos(p_imethod.arguments.size() - 1); // Arguments count without vararg
p_output.append("\tint vararg_length = mono_array_length(");
p_output.append(vararg_arg);
p_output.append(");\n\tint total_length = ");
p_output.append(real_argc_str);
p_output.append(" + vararg_length;\n"
"\tArgumentsVector<Variant> varargs(vararg_length);\n"
"\tArgumentsVector<const Variant *> " C_LOCAL_PTRCALL_ARGS "(total_length);\n");
p_output.append(c_in_statements);
p_output.append("\tfor (int i = 0; i < vararg_length; i++) " OPEN_BLOCK
"\t\tMonoObject* elem = mono_array_get(");
p_output.append(vararg_arg);
p_output.append(", MonoObject*, i);\n"
"\t\tvarargs.set(i, GDMonoMarshal::mono_object_to_variant(elem));\n"
"\t\t" C_LOCAL_PTRCALL_ARGS ".set(");
p_output.append(real_argc_str);
p_output.append(" + i, &varargs.get(i));\n\t" CLOSE_BLOCK);
} else {
p_output.append(c_in_statements);
p_output.append("\tconst void* " C_LOCAL_PTRCALL_ARGS "[");
p_output.append(argc_str + "] = { ");
p_output.append(c_args_var_content + " };\n");
}
}
if (p_imethod.is_vararg) {
p_output.append("\tVariant::CallError vcall_error;\n\t");
if (!ret_void) {
// See the comment on the C_LOCAL_VARARG_RET declaration
if (return_type->cname != name_cache.type_Variant) {
p_output.append(C_LOCAL_VARARG_RET " = ");
} else {
p_output.append(C_LOCAL_RET " = ");
}
}
p_output.append(CS_PARAM_METHODBIND "->call(" CS_PARAM_INSTANCE ", ");
p_output.append(p_imethod.arguments.size() ? C_LOCAL_PTRCALL_ARGS ".ptr()" : "NULL");
p_output.append(", total_length, vcall_error);\n");
// See the comment on the C_LOCAL_VARARG_RET declaration
if (return_type->cname != name_cache.type_Variant) {
p_output.append("\t" C_LOCAL_RET " = " C_LOCAL_VARARG_RET ";\n");
}
} else {
p_output.append("\t" CS_PARAM_METHODBIND "->ptrcall(" CS_PARAM_INSTANCE ", ");
p_output.append(p_imethod.arguments.size() ? C_LOCAL_PTRCALL_ARGS ", " : "NULL, ");
p_output.append(!ret_void ? "&" C_LOCAL_RET ");\n" : "NULL);\n");
}
if (!ret_void) {
if (return_type->c_out.empty())
p_output.append("\treturn " C_LOCAL_RET ";\n");
else
p_output.append(sformat(return_type->c_out, return_type->c_type_out, C_LOCAL_RET, return_type->name));
}
p_output.append(CLOSE_BLOCK "\n");
if (im_icall->editor_only)
p_output.append("#endif // TOOLS_ENABLED\n");
}
return OK;
}
const BindingsGenerator::TypeInterface *BindingsGenerator::_get_type_or_null(const TypeReference &p_typeref) {
const Map<StringName, TypeInterface>::Element *builtin_type_match = builtin_types.find(p_typeref.cname);
if (builtin_type_match)
return &builtin_type_match->get();
const OrderedHashMap<StringName, TypeInterface>::Element obj_type_match = obj_types.find(p_typeref.cname);
if (obj_type_match)
return &obj_type_match.get();
if (p_typeref.is_enum) {
const Map<StringName, TypeInterface>::Element *enum_match = enum_types.find(p_typeref.cname);
if (enum_match)
return &enum_match->get();
// Enum not found. Most likely because none of its constants were bound, so it's empty. That's fine. Use int instead.
const Map<StringName, TypeInterface>::Element *int_match = builtin_types.find(name_cache.type_int);
ERR_FAIL_NULL_V(int_match, NULL);
return &int_match->get();
}
return NULL;
}
const BindingsGenerator::TypeInterface *BindingsGenerator::_get_type_or_placeholder(const TypeReference &p_typeref) {
const TypeInterface *found = _get_type_or_null(p_typeref);
if (found)
return found;
ERR_PRINTS(String() + "Type not found. Creating placeholder: " + p_typeref.cname.operator String());
const Map<StringName, TypeInterface>::Element *match = placeholder_types.find(p_typeref.cname);
if (match)
return &match->get();
TypeInterface placeholder;
TypeInterface::create_placeholder_type(placeholder, p_typeref.cname);
return &placeholder_types.insert(placeholder.cname, placeholder)->get();
}
StringName BindingsGenerator::_get_int_type_name_from_meta(GodotTypeInfo::Metadata p_meta) {
switch (p_meta) {
case GodotTypeInfo::METADATA_INT_IS_INT8:
return "sbyte";
break;
case GodotTypeInfo::METADATA_INT_IS_INT16:
return "short";
break;
case GodotTypeInfo::METADATA_INT_IS_INT32:
return "int";
break;
case GodotTypeInfo::METADATA_INT_IS_INT64:
return "long";
break;
case GodotTypeInfo::METADATA_INT_IS_UINT8:
return "byte";
break;
case GodotTypeInfo::METADATA_INT_IS_UINT16:
return "ushort";
break;
case GodotTypeInfo::METADATA_INT_IS_UINT32:
return "uint";
break;
case GodotTypeInfo::METADATA_INT_IS_UINT64:
return "ulong";
break;
default:
// Assume INT32
return "int";
}
}
StringName BindingsGenerator::_get_float_type_name_from_meta(GodotTypeInfo::Metadata p_meta) {
switch (p_meta) {
case GodotTypeInfo::METADATA_REAL_IS_FLOAT:
return "float";
break;
case GodotTypeInfo::METADATA_REAL_IS_DOUBLE:
return "double";
break;
default:
// Assume real_t (float or double depending of REAL_T_IS_DOUBLE)
#ifdef REAL_T_IS_DOUBLE
return "double";
#else
return "float";
#endif
}
}
void BindingsGenerator::_populate_object_type_interfaces() {
obj_types.clear();
List<StringName> class_list;
ClassDB::get_class_list(&class_list);
class_list.sort_custom<StringName::AlphCompare>();
while (class_list.size()) {
StringName type_cname = class_list.front()->get();
ClassDB::APIType api_type = ClassDB::get_api_type(type_cname);
if (api_type == ClassDB::API_NONE) {
class_list.pop_front();
continue;
}
if (!ClassDB::is_class_exposed(type_cname)) {
_log("Ignoring type `%s` because it's not exposed\n", String(type_cname).utf8().get_data());
class_list.pop_front();
continue;
}
if (!ClassDB::is_class_enabled(type_cname)) {
_log("Ignoring type `%s` because it's not enabled\n", String(type_cname).utf8().get_data());
class_list.pop_front();
continue;
}
ClassDB::ClassInfo *class_info = ClassDB::classes.getptr(type_cname);
TypeInterface itype = TypeInterface::create_object_type(type_cname, api_type);
itype.base_name = ClassDB::get_parent_class(type_cname);
itype.is_singleton = Engine::get_singleton()->has_singleton(itype.proxy_name);
itype.is_instantiable = ClassDB::can_instance(type_cname) && !itype.is_singleton;
itype.is_reference = ClassDB::is_parent_class(type_cname, name_cache.type_Reference);
itype.memory_own = itype.is_reference;
itype.c_out = "\treturn ";
itype.c_out += C_METHOD_UNMANAGED_GET_MANAGED;
itype.c_out += itype.is_reference ? "(%1.ptr());\n" : "(%1);\n";
itype.cs_in = itype.is_singleton ? BINDINGS_PTR_FIELD : "Object." CS_SMETHOD_GETINSTANCE "(%0)";
itype.c_type = "Object*";
itype.c_type_in = itype.c_type;
itype.c_type_out = "MonoObject*";
itype.cs_type = itype.proxy_name;
itype.im_type_in = "IntPtr";
itype.im_type_out = itype.proxy_name;
// Populate properties
List<PropertyInfo> property_list;
ClassDB::get_property_list(type_cname, &property_list, true);
Map<StringName, StringName> accessor_methods;
for (const List<PropertyInfo>::Element *E = property_list.front(); E; E = E->next()) {
const PropertyInfo &property = E->get();
if (property.usage & PROPERTY_USAGE_GROUP || property.usage & PROPERTY_USAGE_CATEGORY)
continue;
PropertyInterface iprop;
iprop.cname = property.name;
iprop.setter = ClassDB::get_property_setter(type_cname, iprop.cname);
iprop.getter = ClassDB::get_property_getter(type_cname, iprop.cname);
if (iprop.setter != StringName())
accessor_methods[iprop.setter] = iprop.cname;
if (iprop.getter != StringName())
accessor_methods[iprop.getter] = iprop.cname;
bool valid = false;
iprop.index = ClassDB::get_property_index(type_cname, iprop.cname, &valid);
ERR_FAIL_COND(!valid);
iprop.proxy_name = escape_csharp_keyword(snake_to_pascal_case(iprop.cname));
// Prevent the property and its enclosing type from sharing the same name
if (iprop.proxy_name == itype.proxy_name) {
_log("Name of property `%s` is ambiguous with the name of its enclosing class `%s`. Renaming property to `%s_`\n",
iprop.proxy_name.utf8().get_data(), itype.proxy_name.utf8().get_data(), iprop.proxy_name.utf8().get_data());
iprop.proxy_name += "_";
}
iprop.proxy_name = iprop.proxy_name.replace("/", "__"); // Some members have a slash...
iprop.prop_doc = NULL;
for (int i = 0; i < itype.class_doc->properties.size(); i++) {
const DocData::PropertyDoc &prop_doc = itype.class_doc->properties[i];
if (prop_doc.name == iprop.cname) {
iprop.prop_doc = &prop_doc;
break;
}
}
itype.properties.push_back(iprop);
}
// Populate methods
List<MethodInfo> virtual_method_list;
ClassDB::get_virtual_methods(type_cname, &virtual_method_list, true);
List<MethodInfo> method_list;
ClassDB::get_method_list(type_cname, &method_list, true);
method_list.sort();
for (List<MethodInfo>::Element *E = method_list.front(); E; E = E->next()) {
const MethodInfo &method_info = E->get();
int argc = method_info.arguments.size();
if (method_info.name.empty())
continue;
String cname = method_info.name;
if (blacklisted_methods.find(itype.cname) && blacklisted_methods[itype.cname].find(cname))
continue;
MethodInterface imethod;
imethod.name = method_info.name;
imethod.cname = cname;
if (method_info.flags & METHOD_FLAG_VIRTUAL)
imethod.is_virtual = true;
PropertyInfo return_info = method_info.return_val;
MethodBind *m = imethod.is_virtual ? NULL : ClassDB::get_method(type_cname, method_info.name);
imethod.is_vararg = m && m->is_vararg();
if (!m && !imethod.is_virtual) {
if (virtual_method_list.find(method_info)) {
// A virtual method without the virtual flag. This is a special case.
// There is no method bind, so let's fallback to Godot's object.Call(string, params)
imethod.requires_object_call = true;
// The method Object.free is registered as a virtual method, but without the virtual flag.
// This is because this method is not supposed to be overridden, but called.
// We assume the return type is void.
imethod.return_type.cname = name_cache.type_void;
// Actually, more methods like this may be added in the future,
// which could actually will return something different.
// Let's put this to notify us if that ever happens.
if (itype.cname != name_cache.type_Object || imethod.name != "free") {
ERR_PRINTS("Notification: New unexpected virtual non-overridable method found.\n"
"We only expected Object.free, but found " +
itype.name + "." + imethod.name);
}
} else {
ERR_EXPLAIN("Missing MethodBind for non-virtual method: " + itype.name + "." + imethod.name);
ERR_FAIL();
}
} else if (return_info.type == Variant::INT && return_info.usage & PROPERTY_USAGE_CLASS_IS_ENUM) {
imethod.return_type.cname = return_info.class_name;
imethod.return_type.is_enum = true;
} else if (return_info.class_name != StringName()) {
imethod.return_type.cname = return_info.class_name;
if (!imethod.is_virtual && ClassDB::is_parent_class(return_info.class_name, name_cache.type_Reference) && return_info.hint != PROPERTY_HINT_RESOURCE_TYPE) {
/* clang-format off */
ERR_PRINTS("Return type is reference but hint is not " _STR(PROPERTY_HINT_RESOURCE_TYPE) "."
" Are you returning a reference type by pointer? Method: " + itype.name + "." + imethod.name);
/* clang-format on */
ERR_FAIL();
}
} else if (return_info.hint == PROPERTY_HINT_RESOURCE_TYPE) {
imethod.return_type.cname = return_info.hint_string;
} else if (return_info.type == Variant::NIL && return_info.usage & PROPERTY_USAGE_NIL_IS_VARIANT) {
imethod.return_type.cname = name_cache.type_Variant;
} else if (return_info.type == Variant::NIL) {
imethod.return_type.cname = name_cache.type_void;
} else {
if (return_info.type == Variant::INT) {
imethod.return_type.cname = _get_int_type_name_from_meta(m ? m->get_argument_meta(-1) : GodotTypeInfo::METADATA_NONE);
} else if (return_info.type == Variant::REAL) {
imethod.return_type.cname = _get_float_type_name_from_meta(m ? m->get_argument_meta(-1) : GodotTypeInfo::METADATA_NONE);
} else {
imethod.return_type.cname = Variant::get_type_name(return_info.type);
}
}
for (int i = 0; i < argc; i++) {
PropertyInfo arginfo = method_info.arguments[i];
ArgumentInterface iarg;
iarg.name = arginfo.name;
if (arginfo.type == Variant::INT && arginfo.usage & PROPERTY_USAGE_CLASS_IS_ENUM) {
iarg.type.cname = arginfo.class_name;
iarg.type.is_enum = true;
} else if (arginfo.class_name != StringName()) {
iarg.type.cname = arginfo.class_name;
} else if (arginfo.hint == PROPERTY_HINT_RESOURCE_TYPE) {
iarg.type.cname = arginfo.hint_string;
} else if (arginfo.type == Variant::NIL) {
iarg.type.cname = name_cache.type_Variant;
} else {
if (arginfo.type == Variant::INT) {
iarg.type.cname = _get_int_type_name_from_meta(m ? m->get_argument_meta(i) : GodotTypeInfo::METADATA_NONE);
} else if (arginfo.type == Variant::REAL) {
iarg.type.cname = _get_float_type_name_from_meta(m ? m->get_argument_meta(i) : GodotTypeInfo::METADATA_NONE);
} else {
iarg.type.cname = Variant::get_type_name(arginfo.type);
}
}
iarg.name = escape_csharp_keyword(snake_to_camel_case(iarg.name));
if (m && m->has_default_argument(i)) {
_default_argument_from_variant(m->get_default_argument(i), iarg);
}
imethod.add_argument(iarg);
}
if (imethod.is_vararg) {
ArgumentInterface ivararg;
ivararg.type.cname = name_cache.type_VarArg;
ivararg.name = "@args";
imethod.add_argument(ivararg);
}
imethod.proxy_name = escape_csharp_keyword(snake_to_pascal_case(imethod.name));
// Prevent the method and its enclosing type from sharing the same name
if (imethod.proxy_name == itype.proxy_name) {
_log("Name of method `%s` is ambiguous with the name of its enclosing class `%s`. Renaming method to `%s_`\n",
imethod.proxy_name.utf8().get_data(), itype.proxy_name.utf8().get_data(), imethod.proxy_name.utf8().get_data());
imethod.proxy_name += "_";
}
Map<StringName, StringName>::Element *accessor = accessor_methods.find(imethod.cname);
if (accessor) {
const PropertyInterface *accessor_property = itype.find_property_by_name(accessor->value());
// We only deprecate an accessor method if it's in the same class as the property. It's easier this way, but also
// we don't know if an accessor method in a different class could have other purposes, so better leave those untouched.
imethod.is_deprecated = true;
imethod.deprecation_message = imethod.proxy_name + " is deprecated. Use the " + accessor_property->proxy_name + " property instead.";
}
if (itype.class_doc) {
for (int i = 0; i < itype.class_doc->methods.size(); i++) {
if (itype.class_doc->methods[i].name == imethod.name) {
imethod.method_doc = &itype.class_doc->methods[i];
break;
}
}
}
if (!imethod.is_virtual && imethod.name[0] == '_') {
for (const List<PropertyInterface>::Element *F = itype.properties.front(); F; F = F->next()) {
const PropertyInterface &iprop = F->get();
if (iprop.setter == imethod.name || iprop.getter == imethod.name) {
imethod.is_internal = true;
itype.methods.push_back(imethod);
break;
}
}
} else {
itype.methods.push_back(imethod);
}
}
// Populate enums and constants
List<String> constants;
ClassDB::get_integer_constant_list(type_cname, &constants, true);
const HashMap<StringName, List<StringName> > &enum_map = class_info->enum_map;
const StringName *k = NULL;
while ((k = enum_map.next(k))) {
StringName enum_proxy_cname = *k;
String enum_proxy_name = enum_proxy_cname.operator String();
if (itype.find_property_by_proxy_name(enum_proxy_cname)) {
// We have several conflicts between enums and PascalCase properties,
// so we append 'Enum' to the enum name in those cases.
enum_proxy_name += "Enum";
enum_proxy_cname = StringName(enum_proxy_name);
}
EnumInterface ienum(enum_proxy_cname);
const List<StringName> &enum_constants = enum_map.get(*k);
for (const List<StringName>::Element *E = enum_constants.front(); E; E = E->next()) {
const StringName &constant_cname = E->get();
String constant_name = constant_cname.operator String();
int *value = class_info->constant_map.getptr(constant_cname);
ERR_FAIL_NULL(value);
constants.erase(constant_name);
ConstantInterface iconstant(constant_name, snake_to_pascal_case(constant_name, true), *value);
iconstant.const_doc = NULL;
for (int i = 0; i < itype.class_doc->constants.size(); i++) {
const DocData::ConstantDoc &const_doc = itype.class_doc->constants[i];
if (const_doc.name == iconstant.name) {
iconstant.const_doc = &const_doc;
break;
}
}
ienum.constants.push_back(iconstant);
}
int prefix_length = _determine_enum_prefix(ienum);
_apply_prefix_to_enum_constants(ienum, prefix_length);
itype.enums.push_back(ienum);
TypeInterface enum_itype;
enum_itype.is_enum = true;
enum_itype.name = itype.name + "." + String(*k);
enum_itype.cname = StringName(enum_itype.name);
enum_itype.proxy_name = itype.proxy_name + "." + enum_proxy_name;
TypeInterface::postsetup_enum_type(enum_itype);
enum_types.insert(enum_itype.cname, enum_itype);
}
for (const List<String>::Element *E = constants.front(); E; E = E->next()) {
const String &constant_name = E->get();
int *value = class_info->constant_map.getptr(StringName(E->get()));
ERR_FAIL_NULL(value);
ConstantInterface iconstant(constant_name, snake_to_pascal_case(constant_name, true), *value);
iconstant.const_doc = NULL;
for (int i = 0; i < itype.class_doc->constants.size(); i++) {
const DocData::ConstantDoc &const_doc = itype.class_doc->constants[i];
if (const_doc.name == iconstant.name) {
iconstant.const_doc = &const_doc;
break;
}
}
itype.constants.push_back(iconstant);
}
obj_types.insert(itype.cname, itype);
class_list.pop_front();
}
}
void BindingsGenerator::_default_argument_from_variant(const Variant &p_val, ArgumentInterface &r_iarg) {
r_iarg.default_argument = p_val;
switch (p_val.get_type()) {
case Variant::NIL:
// Either Object type or Variant
r_iarg.default_argument = "null";
break;
// Atomic types
case Variant::BOOL:
r_iarg.default_argument = bool(p_val) ? "true" : "false";
break;
case Variant::INT:
if (r_iarg.type.cname != name_cache.type_int) {
r_iarg.default_argument = "(%s)" + r_iarg.default_argument;
}
break;
case Variant::REAL:
#ifndef REAL_T_IS_DOUBLE
r_iarg.default_argument += "f";
#endif
break;
case Variant::STRING:
case Variant::NODE_PATH:
r_iarg.default_argument = "\"" + r_iarg.default_argument + "\"";
break;
case Variant::TRANSFORM:
if (p_val.operator Transform() == Transform())
r_iarg.default_argument.clear();
r_iarg.default_argument = "new %s(" + r_iarg.default_argument + ")";
r_iarg.def_param_mode = ArgumentInterface::NULLABLE_VAL;
break;
case Variant::PLANE:
case Variant::AABB:
case Variant::COLOR:
r_iarg.default_argument = "new Color(1, 1, 1, 1)";
r_iarg.def_param_mode = ArgumentInterface::NULLABLE_VAL;
break;
case Variant::VECTOR2:
case Variant::RECT2:
case Variant::VECTOR3:
r_iarg.default_argument = "new %s" + r_iarg.default_argument;
r_iarg.def_param_mode = ArgumentInterface::NULLABLE_VAL;
break;
case Variant::OBJECT:
if (p_val.is_zero()) {
r_iarg.default_argument = "null";
break;
}
FALLTHROUGH;
case Variant::DICTIONARY:
case Variant::_RID:
r_iarg.default_argument = "new %s()";
r_iarg.def_param_mode = ArgumentInterface::NULLABLE_REF;
break;
case Variant::ARRAY:
case Variant::POOL_BYTE_ARRAY:
case Variant::POOL_INT_ARRAY:
case Variant::POOL_REAL_ARRAY:
case Variant::POOL_STRING_ARRAY:
case Variant::POOL_VECTOR2_ARRAY:
case Variant::POOL_VECTOR3_ARRAY:
case Variant::POOL_COLOR_ARRAY:
r_iarg.default_argument = "new %s {}";
r_iarg.def_param_mode = ArgumentInterface::NULLABLE_REF;
break;
case Variant::TRANSFORM2D:
case Variant::BASIS:
case Variant::QUAT:
r_iarg.default_argument = Variant::get_type_name(p_val.get_type()) + ".Identity";
r_iarg.def_param_mode = ArgumentInterface::NULLABLE_VAL;
break;
default: {
}
}
if (r_iarg.def_param_mode == ArgumentInterface::CONSTANT && r_iarg.type.cname == name_cache.type_Variant && r_iarg.default_argument != "null")
r_iarg.def_param_mode = ArgumentInterface::NULLABLE_REF;
}
void BindingsGenerator::_populate_builtin_type_interfaces() {
builtin_types.clear();
TypeInterface itype;
#define INSERT_STRUCT_TYPE(m_type, m_type_in) \
{ \
itype = TypeInterface::create_value_type(String(#m_type)); \
itype.c_in = "\t%0 %1_in = MARSHALLED_IN(" #m_type ", %1);\n"; \
itype.c_out = "\treturn MARSHALLED_OUT(" #m_type ", %1);\n"; \
itype.c_arg_in = "&%s_in"; \
itype.c_type_in = "GDMonoMarshal::M_" #m_type "*"; \
itype.c_type_out = "GDMonoMarshal::M_" #m_type; \
itype.cs_in = "ref %s"; \
itype.cs_out = "return (%1)%0;"; \
itype.im_type_out = itype.cs_type; \
builtin_types.insert(itype.cname, itype); \
}
INSERT_STRUCT_TYPE(Vector2, "real_t*")
INSERT_STRUCT_TYPE(Rect2, "real_t*")
INSERT_STRUCT_TYPE(Transform2D, "real_t*")
INSERT_STRUCT_TYPE(Vector3, "real_t*")
INSERT_STRUCT_TYPE(Basis, "real_t*")
INSERT_STRUCT_TYPE(Quat, "real_t*")
INSERT_STRUCT_TYPE(Transform, "real_t*")
INSERT_STRUCT_TYPE(AABB, "real_t*")
INSERT_STRUCT_TYPE(Color, "real_t*")
INSERT_STRUCT_TYPE(Plane, "real_t*")
#undef INSERT_STRUCT_TYPE
// bool
itype = TypeInterface::create_value_type(String("bool"));
{
// MonoBoolean <---> bool
itype.c_in = "\t%0 %1_in = (%0)%1;\n";
itype.c_out = "\treturn (%0)%1;\n";
itype.c_type = "bool";
itype.c_type_in = "MonoBoolean";
itype.c_type_out = itype.c_type_in;
itype.c_arg_in = "&%s_in";
}
itype.im_type_in = itype.name;
itype.im_type_out = itype.name;
builtin_types.insert(itype.cname, itype);
// Integer types
{
// C interface for 'uint32_t' is the same as that of enums. Remember to apply
// any of the changes done here to 'TypeInterface::postsetup_enum_type' as well.
#define INSERT_INT_TYPE(m_name, m_c_type_in_out, m_c_type) \
{ \
itype = TypeInterface::create_value_type(String(m_name)); \
{ \
itype.c_in = "\t%0 %1_in = (%0)%1;\n"; \
itype.c_out = "\treturn (%0)%1;\n"; \
itype.c_type = #m_c_type; \
itype.c_arg_in = "&%s_in"; \
} \
itype.c_type_in = #m_c_type_in_out; \
itype.c_type_out = itype.c_type_in; \
itype.im_type_in = itype.name; \
itype.im_type_out = itype.name; \
builtin_types.insert(itype.cname, itype); \
}
// The expected type for all integers in ptrcall is 'int64_t', so that's what we use for 'c_type'
INSERT_INT_TYPE("sbyte", int8_t, int64_t);
INSERT_INT_TYPE("short", int16_t, int64_t);
INSERT_INT_TYPE("int", int32_t, int64_t);
INSERT_INT_TYPE("long", int64_t, int64_t);
INSERT_INT_TYPE("byte", uint8_t, int64_t);
INSERT_INT_TYPE("ushort", uint16_t, int64_t);
INSERT_INT_TYPE("uint", uint32_t, int64_t);
INSERT_INT_TYPE("ulong", uint64_t, int64_t);
}
// Floating point types
{
// float
itype = TypeInterface();
itype.name = "float";
itype.cname = itype.name;
itype.proxy_name = "float";
{
// The expected type for 'float' in ptrcall is 'double'
itype.c_in = "\t%0 %1_in = (%0)%1;\n";
itype.c_out = "\treturn (%0)%1;\n";
itype.c_type = "double";
itype.c_type_in = "float";
itype.c_type_out = "float";
itype.c_arg_in = "&%s_in";
}
itype.cs_type = itype.proxy_name;
itype.im_type_in = itype.proxy_name;
itype.im_type_out = itype.proxy_name;
builtin_types.insert(itype.cname, itype);
// double
itype = TypeInterface();
itype.name = "double";
itype.cname = itype.name;
itype.proxy_name = "double";
itype.c_type = "double";
itype.c_type_in = "double";
itype.c_type_out = "double";
itype.c_arg_in = "&%s";
itype.cs_type = itype.proxy_name;
itype.im_type_in = itype.proxy_name;
itype.im_type_out = itype.proxy_name;
builtin_types.insert(itype.cname, itype);
}
// String
itype = TypeInterface();
itype.name = "String";
itype.cname = itype.name;
itype.proxy_name = "string";
itype.c_in = "\t%0 %1_in = " C_METHOD_MONOSTR_TO_GODOT "(%1);\n";
itype.c_out = "\treturn " C_METHOD_MONOSTR_FROM_GODOT "(%1);\n";
itype.c_arg_in = "&%s_in";
itype.c_type = itype.name;
itype.c_type_in = "MonoString*";
itype.c_type_out = "MonoString*";
itype.cs_type = itype.proxy_name;
itype.im_type_in = itype.proxy_name;
itype.im_type_out = itype.proxy_name;
builtin_types.insert(itype.cname, itype);
// NodePath
itype = TypeInterface();
itype.name = "NodePath";
itype.cname = itype.name;
itype.proxy_name = "NodePath";
itype.c_out = "\treturn memnew(NodePath(%1));\n";
itype.c_type = itype.name;
itype.c_type_in = itype.c_type + "*";
itype.c_type_out = itype.c_type + "*";
itype.cs_type = itype.proxy_name;
itype.cs_in = "NodePath." CS_SMETHOD_GETINSTANCE "(%0)";
itype.cs_out = "return new %1(%0);";
itype.im_type_in = "IntPtr";
itype.im_type_out = "IntPtr";
builtin_types.insert(itype.cname, itype);
// RID
itype = TypeInterface();
itype.name = "RID";
itype.cname = itype.name;
itype.proxy_name = "RID";
itype.c_out = "\treturn memnew(RID(%1));\n";
itype.c_type = itype.name;
itype.c_type_in = itype.c_type + "*";
itype.c_type_out = itype.c_type + "*";
itype.cs_type = itype.proxy_name;
itype.cs_in = "RID." CS_SMETHOD_GETINSTANCE "(%0)";
itype.cs_out = "return new %1(%0);";
itype.im_type_in = "IntPtr";
itype.im_type_out = "IntPtr";
builtin_types.insert(itype.cname, itype);
// Variant
itype = TypeInterface();
itype.name = "Variant";
itype.cname = itype.name;
itype.proxy_name = "object";
itype.c_in = "\t%0 %1_in = " C_METHOD_MANAGED_TO_VARIANT "(%1);\n";
itype.c_out = "\treturn " C_METHOD_MANAGED_FROM_VARIANT "(%1);\n";
itype.c_arg_in = "&%s_in";
itype.c_type = itype.name;
itype.c_type_in = "MonoObject*";
itype.c_type_out = "MonoObject*";
itype.cs_type = itype.proxy_name;
itype.im_type_in = "object";
itype.im_type_out = itype.proxy_name;
builtin_types.insert(itype.cname, itype);
// VarArg (fictitious type to represent variable arguments)
itype = TypeInterface();
itype.name = "VarArg";
itype.cname = itype.name;
itype.proxy_name = "object[]";
itype.c_in = "\t%0 %1_in = " C_METHOD_MONOARRAY_TO(Array) "(%1);\n";
itype.c_arg_in = "&%s_in";
itype.c_type = "Array";
itype.c_type_in = "MonoArray*";
itype.cs_type = "params object[]";
itype.im_type_in = "object[]";
builtin_types.insert(itype.cname, itype);
#define INSERT_ARRAY_FULL(m_name, m_type, m_proxy_t) \
{ \
itype = TypeInterface(); \
itype.name = #m_name; \
itype.cname = itype.name; \
itype.proxy_name = #m_proxy_t "[]"; \
itype.c_in = "\t%0 %1_in = " C_METHOD_MONOARRAY_TO(m_type) "(%1);\n"; \
itype.c_out = "\treturn " C_METHOD_MONOARRAY_FROM(m_type) "(%1);\n"; \
itype.c_arg_in = "&%s_in"; \
itype.c_type = #m_type; \
itype.c_type_in = "MonoArray*"; \
itype.c_type_out = "MonoArray*"; \
itype.cs_type = itype.proxy_name; \
itype.im_type_in = itype.proxy_name; \
itype.im_type_out = itype.proxy_name; \
builtin_types.insert(itype.name, itype); \
}
#define INSERT_ARRAY(m_type, m_proxy_t) INSERT_ARRAY_FULL(m_type, m_type, m_proxy_t)
INSERT_ARRAY(PoolIntArray, int);
INSERT_ARRAY_FULL(PoolByteArray, PoolByteArray, byte);
#ifdef REAL_T_IS_DOUBLE
INSERT_ARRAY(PoolRealArray, double);
#else
INSERT_ARRAY(PoolRealArray, float);
#endif
INSERT_ARRAY(PoolStringArray, string);
INSERT_ARRAY(PoolColorArray, Color);
INSERT_ARRAY(PoolVector2Array, Vector2);
INSERT_ARRAY(PoolVector3Array, Vector3);
#undef INSERT_ARRAY
// Array
itype = TypeInterface();
itype.name = "Array";
itype.cname = itype.name;
itype.proxy_name = itype.name;
itype.c_out = "\treturn memnew(Array(%1));\n";
itype.c_type = itype.name;
itype.c_type_in = itype.c_type + "*";
itype.c_type_out = itype.c_type + "*";
itype.cs_type = BINDINGS_NAMESPACE_COLLECTIONS "." + itype.proxy_name;
itype.cs_in = "%0." CS_SMETHOD_GETINSTANCE "()";
itype.cs_out = "return new " + itype.cs_type + "(%0);";
itype.im_type_in = "IntPtr";
itype.im_type_out = "IntPtr";
builtin_types.insert(itype.cname, itype);
// Dictionary
itype = TypeInterface();
itype.name = "Dictionary";
itype.cname = itype.name;
itype.proxy_name = itype.name;
itype.c_out = "\treturn memnew(Dictionary(%1));\n";
itype.c_type = itype.name;
itype.c_type_in = itype.c_type + "*";
itype.c_type_out = itype.c_type + "*";
itype.cs_type = BINDINGS_NAMESPACE_COLLECTIONS "." + itype.proxy_name;
itype.cs_in = "%0." CS_SMETHOD_GETINSTANCE "()";
itype.cs_out = "return new " + itype.cs_type + "(%0);";
itype.im_type_in = "IntPtr";
itype.im_type_out = "IntPtr";
builtin_types.insert(itype.cname, itype);
// void (fictitious type to represent the return type of methods that do not return anything)
itype = TypeInterface();
itype.name = "void";
itype.cname = itype.name;
itype.proxy_name = itype.name;
itype.c_type = itype.name;
itype.c_type_in = itype.c_type;
itype.c_type_out = itype.c_type;
itype.cs_type = itype.proxy_name;
itype.im_type_in = itype.proxy_name;
itype.im_type_out = itype.proxy_name;
builtin_types.insert(itype.cname, itype);
}
void BindingsGenerator::_populate_global_constants() {
int global_constants_count = GlobalConstants::get_global_constant_count();
if (global_constants_count > 0) {
Map<String, DocData::ClassDoc>::Element *match = EditorHelp::get_doc_data()->class_list.find("@GlobalScope");
ERR_EXPLAIN("Could not find `@GlobalScope` in DocData");
CRASH_COND(!match);
const DocData::ClassDoc &global_scope_doc = match->value();
for (int i = 0; i < global_constants_count; i++) {
String constant_name = GlobalConstants::get_global_constant_name(i);
const DocData::ConstantDoc *const_doc = NULL;
for (int j = 0; j < global_scope_doc.constants.size(); j++) {
const DocData::ConstantDoc &curr_const_doc = global_scope_doc.constants[j];
if (curr_const_doc.name == constant_name) {
const_doc = &curr_const_doc;
break;
}
}
int constant_value = GlobalConstants::get_global_constant_value(i);
StringName enum_name = GlobalConstants::get_global_constant_enum(i);
ConstantInterface iconstant(constant_name, snake_to_pascal_case(constant_name, true), constant_value);
iconstant.const_doc = const_doc;
if (enum_name != StringName()) {
EnumInterface ienum(enum_name);
List<EnumInterface>::Element *enum_match = global_enums.find(ienum);
if (enum_match) {
enum_match->get().constants.push_back(iconstant);
} else {
ienum.constants.push_back(iconstant);
global_enums.push_back(ienum);
}
} else {
global_constants.push_back(iconstant);
}
}
for (List<EnumInterface>::Element *E = global_enums.front(); E; E = E->next()) {
EnumInterface &ienum = E->get();
TypeInterface enum_itype;
enum_itype.is_enum = true;
enum_itype.name = ienum.cname.operator String();
enum_itype.cname = ienum.cname;
enum_itype.proxy_name = enum_itype.name;
TypeInterface::postsetup_enum_type(enum_itype);
enum_types.insert(enum_itype.cname, enum_itype);
int prefix_length = _determine_enum_prefix(ienum);
// HARDCODED: The Error enum have the prefix 'ERR_' for everything except 'OK' and 'FAILED'.
if (ienum.cname == name_cache.enum_Error) {
if (prefix_length > 0) { // Just in case it ever changes
ERR_PRINTS("Prefix for enum 'Error' is not empty");
}
prefix_length = 1; // 'ERR_'
}
_apply_prefix_to_enum_constants(ienum, prefix_length);
}
}
// HARDCODED
List<StringName> hardcoded_enums;
hardcoded_enums.push_back("Vector3.Axis");
for (List<StringName>::Element *E = hardcoded_enums.front(); E; E = E->next()) {
// These enums are not generated and must be written manually (e.g.: Vector3.Axis)
// Here, we assume core types do not begin with underscore
TypeInterface enum_itype;
enum_itype.is_enum = true;
enum_itype.name = E->get().operator String();
enum_itype.cname = E->get();
enum_itype.proxy_name = enum_itype.name;
TypeInterface::postsetup_enum_type(enum_itype);
enum_types.insert(enum_itype.cname, enum_itype);
}
}
void BindingsGenerator::_initialize_blacklisted_methods() {
blacklisted_methods["Object"].push_back("to_string"); // there is already ToString
blacklisted_methods["Object"].push_back("_to_string"); // override ToString instead
blacklisted_methods["Object"].push_back("_init"); // never called in C# (TODO: implement it)
}
void BindingsGenerator::_log(const char *p_format, ...) {
if (log_print_enabled) {
va_list list;
va_start(list, p_format);
OS::get_singleton()->print("%s", str_format(p_format, list).utf8().get_data());
va_end(list);
}
}
void BindingsGenerator::_initialize() {
EditorHelp::generate_doc();
enum_types.clear();
_initialize_blacklisted_methods();
_populate_object_type_interfaces();
_populate_builtin_type_interfaces();
_populate_global_constants();
// Generate internal calls (after populating type interfaces and global constants)
core_custom_icalls.clear();
editor_custom_icalls.clear();
for (OrderedHashMap<StringName, TypeInterface>::Element E = obj_types.front(); E; E = E.next())
_generate_method_icalls(E.get());
}
void BindingsGenerator::handle_cmdline_args(const List<String> &p_cmdline_args) {
const int NUM_OPTIONS = 2;
String generate_all_glue_option = "--generate-mono-glue";
String generate_cs_glue_option = "--generate-mono-cs-glue";
String generate_cpp_glue_option = "--generate-mono-cpp-glue";
String glue_dir_path;
String cs_dir_path;
String cpp_dir_path;
int options_left = NUM_OPTIONS;
const List<String>::Element *elem = p_cmdline_args.front();
while (elem && options_left) {
if (elem->get() == generate_all_glue_option) {
const List<String>::Element *path_elem = elem->next();
if (path_elem) {
glue_dir_path = path_elem->get();
elem = elem->next();
} else {
ERR_PRINTS(generate_all_glue_option + ": No output directory specified (expected path to {GODOT_ROOT}/modules/mono/glue)");
}
--options_left;
} else if (elem->get() == generate_cs_glue_option) {
const List<String>::Element *path_elem = elem->next();
if (path_elem) {
cs_dir_path = path_elem->get();
elem = elem->next();
} else {
ERR_PRINTS(generate_cs_glue_option + ": No output directory specified");
}
--options_left;
} else if (elem->get() == generate_cpp_glue_option) {
const List<String>::Element *path_elem = elem->next();
if (path_elem) {
cpp_dir_path = path_elem->get();
elem = elem->next();
} else {
ERR_PRINTS(generate_cpp_glue_option + ": No output directory specified");
}
--options_left;
}
elem = elem->next();
}
if (glue_dir_path.length() || cs_dir_path.length() || cpp_dir_path.length()) {
BindingsGenerator bindings_generator;
bindings_generator.set_log_print_enabled(true);
if (glue_dir_path.length()) {
if (bindings_generator.generate_glue(glue_dir_path) != OK)
ERR_PRINTS(generate_all_glue_option + ": Failed to generate the C++ glue");
if (bindings_generator.generate_cs_api(glue_dir_path.plus_file("Managed/Generated")) != OK)
ERR_PRINTS(generate_all_glue_option + ": Failed to generate the C# API");
}
if (cs_dir_path.length()) {
if (bindings_generator.generate_cs_api(cs_dir_path) != OK)
ERR_PRINTS(generate_cs_glue_option + ": Failed to generate the C# API");
}
if (cpp_dir_path.length()) {
if (bindings_generator.generate_glue(cpp_dir_path) != OK)
ERR_PRINTS(generate_cpp_glue_option + ": Failed to generate the C++ glue");
}
// Exit once done
::exit(0);
}
}
#endif
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