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godot/core/variant/variant_parser.cpp

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/**************************************************************************/
/* variant_parser.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* 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 "variant_parser.h"
#include "core/crypto/crypto_core.h"
#include "core/input/input_event.h"
#include "core/io/resource_loader.h"
#include "core/object/script_language.h"
#include "core/os/keyboard.h"
#include "core/string/string_buffer.h"
char32_t VariantParser::Stream::get_char() {
// is within buffer?
if (readahead_pointer < readahead_filled) {
return readahead_buffer[readahead_pointer++];
}
// attempt to readahead
readahead_filled = _read_buffer(readahead_buffer, readahead_enabled ? READAHEAD_SIZE : 1);
if (readahead_filled) {
readahead_pointer = 0;
} else {
// EOF
readahead_pointer = 1;
eof = true;
return 0;
}
return get_char();
}
bool VariantParser::Stream::is_eof() const {
if (readahead_enabled) {
return eof;
}
return _is_eof();
}
bool VariantParser::StreamFile::is_utf8() const {
return true;
}
bool VariantParser::StreamFile::_is_eof() const {
return f->eof_reached();
}
uint32_t VariantParser::StreamFile::_read_buffer(char32_t *p_buffer, uint32_t p_num_chars) {
// The buffer is assumed to include at least one character (for null terminator)
ERR_FAIL_COND_V(!p_num_chars, 0);
uint8_t *temp = (uint8_t *)alloca(p_num_chars);
uint64_t num_read = f->get_buffer(temp, p_num_chars);
ERR_FAIL_COND_V(num_read == UINT64_MAX, 0);
// translate to wchar
for (uint32_t n = 0; n < num_read; n++) {
p_buffer[n] = temp[n];
}
// could be less than p_num_chars, or zero
return num_read;
}
bool VariantParser::StreamString::is_utf8() const {
return false;
}
bool VariantParser::StreamString::_is_eof() const {
return pos > s.length();
}
uint32_t VariantParser::StreamString::_read_buffer(char32_t *p_buffer, uint32_t p_num_chars) {
// The buffer is assumed to include at least one character (for null terminator)
ERR_FAIL_COND_V(!p_num_chars, 0);
int available = MAX(s.length() - pos, 0);
if (available >= (int)p_num_chars) {
const char32_t *src = s.ptr();
src += pos;
memcpy(p_buffer, src, p_num_chars * sizeof(char32_t));
pos += p_num_chars;
return p_num_chars;
}
// going to reach EOF
if (available) {
const char32_t *src = s.ptr();
src += pos;
memcpy(p_buffer, src, available * sizeof(char32_t));
pos += available;
}
// add a zero
p_buffer[available] = 0;
return available;
}
/////////////////////////////////////////////////////////////////////////////////////////////////
const char *VariantParser::tk_name[TK_MAX] = {
"'{'",
"'}'",
"'['",
"']'",
"'('",
"')'",
"identifier",
"string",
"string_name",
"number",
"color",
"':'",
"','",
"'.'",
"'='",
"EOF",
"ERROR"
};
static double stor_fix(const String &p_str) {
if (p_str == "inf") {
return INFINITY;
} else if (p_str == "inf_neg") {
return -INFINITY;
} else if (p_str == "nan") {
return NAN;
}
return -1;
}
Error VariantParser::get_token(Stream *p_stream, Token &r_token, int &line, String &r_err_str) {
bool string_name = false;
while (true) {
char32_t cchar;
if (p_stream->saved) {
cchar = p_stream->saved;
p_stream->saved = 0;
} else {
cchar = p_stream->get_char();
if (p_stream->is_eof()) {
r_token.type = TK_EOF;
return OK;
}
}
switch (cchar) {
case '\n': {
line++;
break;
}
case 0: {
r_token.type = TK_EOF;
return OK;
} break;
case '{': {
r_token.type = TK_CURLY_BRACKET_OPEN;
return OK;
}
case '}': {
r_token.type = TK_CURLY_BRACKET_CLOSE;
return OK;
}
case '[': {
r_token.type = TK_BRACKET_OPEN;
return OK;
}
case ']': {
r_token.type = TK_BRACKET_CLOSE;
return OK;
}
case '(': {
r_token.type = TK_PARENTHESIS_OPEN;
return OK;
}
case ')': {
r_token.type = TK_PARENTHESIS_CLOSE;
return OK;
}
case ':': {
r_token.type = TK_COLON;
return OK;
}
case ';': {
while (true) {
char32_t ch = p_stream->get_char();
if (p_stream->is_eof()) {
r_token.type = TK_EOF;
return OK;
}
if (ch == '\n') {
line++;
break;
}
}
break;
}
case ',': {
r_token.type = TK_COMMA;
return OK;
}
case '.': {
r_token.type = TK_PERIOD;
return OK;
}
case '=': {
r_token.type = TK_EQUAL;
return OK;
}
case '#': {
StringBuffer<> color_str;
color_str += '#';
while (true) {
char32_t ch = p_stream->get_char();
if (p_stream->is_eof()) {
r_token.type = TK_EOF;
return OK;
} else if (is_hex_digit(ch)) {
color_str += ch;
} else {
p_stream->saved = ch;
break;
}
}
r_token.value = Color::html(color_str.as_string());
r_token.type = TK_COLOR;
return OK;
}
#ifndef DISABLE_DEPRECATED
case '@': // Compatibility with 3.x StringNames.
#endif
case '&': { // StringName.
cchar = p_stream->get_char();
if (cchar != '"') {
r_err_str = "Expected '\"' after '&'";
r_token.type = TK_ERROR;
return ERR_PARSE_ERROR;
}
string_name = true;
[[fallthrough]];
}
case '"': {
String str;
char32_t prev = 0;
while (true) {
char32_t ch = p_stream->get_char();
if (ch == 0) {
r_err_str = "Unterminated String";
r_token.type = TK_ERROR;
return ERR_PARSE_ERROR;
} else if (ch == '"') {
break;
} else if (ch == '\\') {
//escaped characters...
char32_t next = p_stream->get_char();
if (next == 0) {
r_err_str = "Unterminated String";
r_token.type = TK_ERROR;
return ERR_PARSE_ERROR;
}
char32_t res = 0;
switch (next) {
case 'b':
res = 8;
break;
case 't':
res = 9;
break;
case 'n':
res = 10;
break;
case 'f':
res = 12;
break;
case 'r':
res = 13;
break;
case 'U':
case 'u': {
// Hexadecimal sequence.
int hex_len = (next == 'U') ? 6 : 4;
for (int j = 0; j < hex_len; j++) {
char32_t c = p_stream->get_char();
if (c == 0) {
r_err_str = "Unterminated String";
r_token.type = TK_ERROR;
return ERR_PARSE_ERROR;
}
if (!is_hex_digit(c)) {
r_err_str = "Malformed hex constant in string";
r_token.type = TK_ERROR;
return ERR_PARSE_ERROR;
}
char32_t v;
if (is_digit(c)) {
v = c - '0';
} else if (c >= 'a' && c <= 'f') {
v = c - 'a';
v += 10;
} else if (c >= 'A' && c <= 'F') {
v = c - 'A';
v += 10;
} else {
ERR_PRINT("Bug parsing hex constant.");
v = 0;
}
res <<= 4;
res |= v;
}
} break;
default: {
res = next;
} break;
}
// Parse UTF-16 pair.
if ((res & 0xfffffc00) == 0xd800) {
if (prev == 0) {
prev = res;
continue;
} else {
r_err_str = "Invalid UTF-16 sequence in string, unpaired lead surrogate";
r_token.type = TK_ERROR;
return ERR_PARSE_ERROR;
}
} else if ((res & 0xfffffc00) == 0xdc00) {
if (prev == 0) {
r_err_str = "Invalid UTF-16 sequence in string, unpaired trail surrogate";
r_token.type = TK_ERROR;
return ERR_PARSE_ERROR;
} else {
res = (prev << 10UL) + res - ((0xd800 << 10UL) + 0xdc00 - 0x10000);
prev = 0;
}
}
if (prev != 0) {
r_err_str = "Invalid UTF-16 sequence in string, unpaired lead surrogate";
r_token.type = TK_ERROR;
return ERR_PARSE_ERROR;
}
str += res;
} else {
if (prev != 0) {
r_err_str = "Invalid UTF-16 sequence in string, unpaired lead surrogate";
r_token.type = TK_ERROR;
return ERR_PARSE_ERROR;
}
if (ch == '\n') {
line++;
}
str += ch;
}
}
if (prev != 0) {
r_err_str = "Invalid UTF-16 sequence in string, unpaired lead surrogate";
r_token.type = TK_ERROR;
return ERR_PARSE_ERROR;
}
if (p_stream->is_utf8()) {
str.parse_utf8(str.ascii(true).get_data());
}
if (string_name) {
r_token.type = TK_STRING_NAME;
r_token.value = StringName(str);
} else {
r_token.type = TK_STRING;
r_token.value = str;
}
return OK;
} break;
default: {
if (cchar <= 32) {
break;
}
if (cchar == '-' || (cchar >= '0' && cchar <= '9')) {
//a number
StringBuffer<> num;
#define READING_SIGN 0
#define READING_INT 1
#define READING_DEC 2
#define READING_EXP 3
#define READING_DONE 4
int reading = READING_INT;
if (cchar == '-') {
num += '-';
cchar = p_stream->get_char();
}
char32_t c = cchar;
bool exp_sign = false;
bool exp_beg = false;
bool is_float = false;
while (true) {
switch (reading) {
case READING_INT: {
if (is_digit(c)) {
//pass
} else if (c == '.') {
reading = READING_DEC;
is_float = true;
} else if (c == 'e') {
reading = READING_EXP;
is_float = true;
} else {
reading = READING_DONE;
}
} break;
case READING_DEC: {
if (is_digit(c)) {
} else if (c == 'e') {
reading = READING_EXP;
} else {
reading = READING_DONE;
}
} break;
case READING_EXP: {
if (is_digit(c)) {
exp_beg = true;
} else if ((c == '-' || c == '+') && !exp_sign && !exp_beg) {
exp_sign = true;
} else {
reading = READING_DONE;
}
} break;
}
if (reading == READING_DONE) {
break;
}
num += c;
c = p_stream->get_char();
}
p_stream->saved = c;
r_token.type = TK_NUMBER;
if (is_float) {
r_token.value = num.as_double();
} else {
r_token.value = num.as_int();
}
return OK;
} else if (is_ascii_alphabet_char(cchar) || is_underscore(cchar)) {
StringBuffer<> id;
bool first = true;
while (is_ascii_alphabet_char(cchar) || is_underscore(cchar) || (!first && is_digit(cchar))) {
id += cchar;
cchar = p_stream->get_char();
first = false;
}
p_stream->saved = cchar;
r_token.type = TK_IDENTIFIER;
r_token.value = id.as_string();
return OK;
} else {
r_err_str = "Unexpected character.";
r_token.type = TK_ERROR;
return ERR_PARSE_ERROR;
}
}
}
}
r_token.type = TK_ERROR;
return ERR_PARSE_ERROR;
}
Error VariantParser::_parse_enginecfg(Stream *p_stream, Vector<String> &strings, int &line, String &r_err_str) {
Token token;
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_PARENTHESIS_OPEN) {
r_err_str = "Expected '(' in old-style project.godot construct";
return ERR_PARSE_ERROR;
}
String accum;
while (true) {
char32_t c = p_stream->get_char();
if (p_stream->is_eof()) {
r_err_str = "Unexpected EOF while parsing old-style project.godot construct";
return ERR_PARSE_ERROR;
}
if (c == ',') {
strings.push_back(accum.strip_edges());
accum = String();
} else if (c == ')') {
strings.push_back(accum.strip_edges());
return OK;
} else if (c == '\n') {
line++;
}
}
}
template <typename T>
Error VariantParser::_parse_construct(Stream *p_stream, Vector<T> &r_construct, int &line, String &r_err_str) {
Token token;
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_PARENTHESIS_OPEN) {
r_err_str = "Expected '(' in constructor";
return ERR_PARSE_ERROR;
}
bool first = true;
while (true) {
if (!first) {
get_token(p_stream, token, line, r_err_str);
if (token.type == TK_COMMA) {
//do none
} else if (token.type == TK_PARENTHESIS_CLOSE) {
break;
} else {
r_err_str = "Expected ',' or ')' in constructor";
return ERR_PARSE_ERROR;
}
}
get_token(p_stream, token, line, r_err_str);
if (first && token.type == TK_PARENTHESIS_CLOSE) {
break;
} else if (token.type != TK_NUMBER) {
bool valid = false;
if (token.type == TK_IDENTIFIER) {
double real = stor_fix(token.value);
if (real != -1) {
token.type = TK_NUMBER;
token.value = real;
valid = true;
}
}
if (!valid) {
r_err_str = "Expected float in constructor";
return ERR_PARSE_ERROR;
}
}
r_construct.push_back(token.value);
first = false;
}
return OK;
}
Error VariantParser::_parse_byte_array(Stream *p_stream, Vector<uint8_t> &r_construct, int &line, String &r_err_str) {
Token token;
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_PARENTHESIS_OPEN) {
r_err_str = "Expected '(' in constructor";
return ERR_PARSE_ERROR;
}
get_token(p_stream, token, line, r_err_str);
if (token.type == TK_STRING) {
// Base64 encoded array.
String base64_encoded_string = token.value;
int strlen = base64_encoded_string.length();
CharString cstr = base64_encoded_string.ascii();
size_t arr_len = 0;
r_construct.resize(strlen / 4 * 3 + 1);
uint8_t *w = r_construct.ptrw();
Error err = CryptoCore::b64_decode(&w[0], r_construct.size(), &arr_len, (unsigned char *)cstr.get_data(), strlen);
if (err) {
r_err_str = "Invalid base64-encoded string";
return ERR_PARSE_ERROR;
}
r_construct.resize(arr_len);
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_PARENTHESIS_CLOSE) {
r_err_str = "Expected ')' in constructor";
return ERR_PARSE_ERROR;
}
} else if (token.type == TK_NUMBER || token.type == TK_IDENTIFIER) {
// Individual elements.
while (true) {
if (token.type != TK_NUMBER) {
bool valid = false;
if (token.type == TK_IDENTIFIER) {
double real = stor_fix(token.value);
if (real != -1) {
token.type = TK_NUMBER;
token.value = real;
valid = true;
}
}
if (!valid) {
r_err_str = "Expected number in constructor";
return ERR_PARSE_ERROR;
}
}
r_construct.push_back(token.value);
get_token(p_stream, token, line, r_err_str);
if (token.type == TK_COMMA) {
//do none
} else if (token.type == TK_PARENTHESIS_CLOSE) {
break;
} else {
r_err_str = "Expected ',' or ')' in constructor";
return ERR_PARSE_ERROR;
}
get_token(p_stream, token, line, r_err_str);
}
} else if (token.type == TK_PARENTHESIS_CLOSE) {
// Empty array.
return OK;
} else {
r_err_str = "Expected base64 string, or list of numbers in constructor";
return ERR_PARSE_ERROR;
}
return OK;
}
Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream, int &line, String &r_err_str, ResourceParser *p_res_parser) {
if (token.type == TK_CURLY_BRACKET_OPEN) {
Dictionary d;
Error err = _parse_dictionary(d, p_stream, line, r_err_str, p_res_parser);
if (err) {
return err;
}
value = d;
return OK;
} else if (token.type == TK_BRACKET_OPEN) {
Array a;
Error err = _parse_array(a, p_stream, line, r_err_str, p_res_parser);
if (err) {
return err;
}
value = a;
return OK;
} else if (token.type == TK_IDENTIFIER) {
String id = token.value;
if (id == "true") {
value = true;
} else if (id == "false") {
value = false;
} else if (id == "null" || id == "nil") {
value = Variant();
} else if (id == "inf") {
value = INFINITY;
} else if (id == "inf_neg") {
value = -INFINITY;
} else if (id == "nan") {
value = NAN;
} else if (id == "Vector2") {
Vector<real_t> args;
Error err = _parse_construct<real_t>(p_stream, args, line, r_err_str);
if (err) {
return err;
}
if (args.size() != 2) {
r_err_str = "Expected 2 arguments for constructor";
return ERR_PARSE_ERROR;
}
value = Vector2(args[0], args[1]);
} else if (id == "Vector2i") {
Vector<int32_t> args;
Error err = _parse_construct<int32_t>(p_stream, args, line, r_err_str);
if (err) {
return err;
}
if (args.size() != 2) {
r_err_str = "Expected 2 arguments for constructor";
return ERR_PARSE_ERROR;
}
value = Vector2i(args[0], args[1]);
} else if (id == "Rect2") {
Vector<real_t> args;
Error err = _parse_construct<real_t>(p_stream, args, line, r_err_str);
if (err) {
return err;
}
if (args.size() != 4) {
r_err_str = "Expected 4 arguments for constructor";
return ERR_PARSE_ERROR;
}
value = Rect2(args[0], args[1], args[2], args[3]);
} else if (id == "Rect2i") {
Vector<int32_t> args;
Error err = _parse_construct<int32_t>(p_stream, args, line, r_err_str);
if (err) {
return err;
}
if (args.size() != 4) {
r_err_str = "Expected 4 arguments for constructor";
return ERR_PARSE_ERROR;
}
value = Rect2i(args[0], args[1], args[2], args[3]);
} else if (id == "Vector3") {
Vector<real_t> args;
Error err = _parse_construct<real_t>(p_stream, args, line, r_err_str);
if (err) {
return err;
}
if (args.size() != 3) {
r_err_str = "Expected 3 arguments for constructor";
return ERR_PARSE_ERROR;
}
value = Vector3(args[0], args[1], args[2]);
} else if (id == "Vector3i") {
Vector<int32_t> args;
Error err = _parse_construct<int32_t>(p_stream, args, line, r_err_str);
if (err) {
return err;
}
if (args.size() != 3) {
r_err_str = "Expected 3 arguments for constructor";
return ERR_PARSE_ERROR;
}
value = Vector3i(args[0], args[1], args[2]);
} else if (id == "Vector4") {
Vector<real_t> args;
Error err = _parse_construct<real_t>(p_stream, args, line, r_err_str);
if (err) {
return err;
}
if (args.size() != 4) {
r_err_str = "Expected 4 arguments for constructor";
return ERR_PARSE_ERROR;
}
value = Vector4(args[0], args[1], args[2], args[3]);
} else if (id == "Vector4i") {
Vector<int32_t> args;
Error err = _parse_construct<int32_t>(p_stream, args, line, r_err_str);
if (err) {
return err;
}
if (args.size() != 4) {
r_err_str = "Expected 4 arguments for constructor";
return ERR_PARSE_ERROR;
}
value = Vector4i(args[0], args[1], args[2], args[3]);
} else if (id == "Transform2D" || id == "Matrix32") { //compatibility
Vector<real_t> args;
Error err = _parse_construct<real_t>(p_stream, args, line, r_err_str);
if (err) {
return err;
}
if (args.size() != 6) {
r_err_str = "Expected 6 arguments for constructor";
return ERR_PARSE_ERROR;
}
Transform2D m;
m[0] = Vector2(args[0], args[1]);
m[1] = Vector2(args[2], args[3]);
m[2] = Vector2(args[4], args[5]);
value = m;
} else if (id == "Plane") {
Vector<real_t> args;
Error err = _parse_construct<real_t>(p_stream, args, line, r_err_str);
if (err) {
return err;
}
if (args.size() != 4) {
r_err_str = "Expected 4 arguments for constructor";
return ERR_PARSE_ERROR;
}
value = Plane(args[0], args[1], args[2], args[3]);
} else if (id == "Quaternion" || id == "Quat") { // "Quat" kept for compatibility
Vector<real_t> args;
Error err = _parse_construct<real_t>(p_stream, args, line, r_err_str);
if (err) {
return err;
}
if (args.size() != 4) {
r_err_str = "Expected 4 arguments for constructor";
return ERR_PARSE_ERROR;
}
value = Quaternion(args[0], args[1], args[2], args[3]);
} else if (id == "AABB" || id == "Rect3") {
Vector<real_t> args;
Error err = _parse_construct<real_t>(p_stream, args, line, r_err_str);
if (err) {
return err;
}
if (args.size() != 6) {
r_err_str = "Expected 6 arguments for constructor";
return ERR_PARSE_ERROR;
}
value = AABB(Vector3(args[0], args[1], args[2]), Vector3(args[3], args[4], args[5]));
} else if (id == "Basis" || id == "Matrix3") { //compatibility
Vector<real_t> args;
Error err = _parse_construct<real_t>(p_stream, args, line, r_err_str);
if (err) {
return err;
}
if (args.size() != 9) {
r_err_str = "Expected 9 arguments for constructor";
return ERR_PARSE_ERROR;
}
value = Basis(args[0], args[1], args[2], args[3], args[4], args[5], args[6], args[7], args[8]);
} else if (id == "Transform3D" || id == "Transform") { // "Transform" kept for compatibility with Godot <4.
Vector<real_t> args;
Error err = _parse_construct<real_t>(p_stream, args, line, r_err_str);
if (err) {
return err;
}
if (args.size() != 12) {
r_err_str = "Expected 12 arguments for constructor";
return ERR_PARSE_ERROR;
}
value = Transform3D(Basis(args[0], args[1], args[2], args[3], args[4], args[5], args[6], args[7], args[8]), Vector3(args[9], args[10], args[11]));
} else if (id == "Projection") { // "Transform" kept for compatibility with Godot <4.
Vector<real_t> args;
Error err = _parse_construct<real_t>(p_stream, args, line, r_err_str);
if (err) {
return err;
}
if (args.size() != 16) {
r_err_str = "Expected 16 arguments for constructor";
return ERR_PARSE_ERROR;
}
value = Projection(Vector4(args[0], args[1], args[2], args[3]), Vector4(args[4], args[5], args[6], args[7]), Vector4(args[8], args[9], args[10], args[11]), Vector4(args[12], args[13], args[14], args[15]));
} else if (id == "Color") {
Vector<float> args;
Error err = _parse_construct<float>(p_stream, args, line, r_err_str);
if (err) {
return err;
}
if (args.size() != 4) {
r_err_str = "Expected 4 arguments for constructor";
return ERR_PARSE_ERROR;
}
value = Color(args[0], args[1], args[2], args[3]);
} else if (id == "NodePath") {
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_PARENTHESIS_OPEN) {
r_err_str = "Expected '('";
return ERR_PARSE_ERROR;
}
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_STRING) {
r_err_str = "Expected string as argument for NodePath()";
return ERR_PARSE_ERROR;
}
value = NodePath(String(token.value));
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_PARENTHESIS_CLOSE) {
r_err_str = "Expected ')'";
return ERR_PARSE_ERROR;
}
} else if (id == "RID") {
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_PARENTHESIS_OPEN) {
r_err_str = "Expected '('";
return ERR_PARSE_ERROR;
}
get_token(p_stream, token, line, r_err_str);
// Permit empty RID.
if (token.type == TK_PARENTHESIS_CLOSE) {
value = RID();
return OK;
} else if (token.type != TK_NUMBER) {
r_err_str = "Expected number as argument or ')'";
return ERR_PARSE_ERROR;
}
value = RID::from_uint64(token.value);
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_PARENTHESIS_CLOSE) {
r_err_str = "Expected ')'";
return ERR_PARSE_ERROR;
}
} else if (id == "Signal") {
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_PARENTHESIS_OPEN) {
r_err_str = "Expected '('";
return ERR_PARSE_ERROR;
}
// Load as empty.
value = Signal();
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_PARENTHESIS_CLOSE) {
r_err_str = "Expected ')'";
return ERR_PARSE_ERROR;
}
} else if (id == "Callable") {
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_PARENTHESIS_OPEN) {
r_err_str = "Expected '('";
return ERR_PARSE_ERROR;
}
// Load as empty.
value = Callable();
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_PARENTHESIS_CLOSE) {
r_err_str = "Expected ')'";
return ERR_PARSE_ERROR;
}
} else if (id == "Object") {
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_PARENTHESIS_OPEN) {
r_err_str = "Expected '('";
return ERR_PARSE_ERROR;
}
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_IDENTIFIER) {
r_err_str = "Expected identifier with type of object";
return ERR_PARSE_ERROR;
}
String type = token.value;
Object *obj = ClassDB::instantiate(type);
if (!obj) {
r_err_str = "Can't instantiate Object() of type: " + type;
return ERR_PARSE_ERROR;
}
Ref<RefCounted> ref = Ref<RefCounted>(Object::cast_to<RefCounted>(obj));
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_COMMA) {
r_err_str = "Expected ',' after object type";
return ERR_PARSE_ERROR;
}
bool at_key = true;
String key;
bool need_comma = false;
while (true) {
if (p_stream->is_eof()) {
r_err_str = "Unexpected End of File while parsing Object()";
return ERR_FILE_CORRUPT;
}
if (at_key) {
Error err = get_token(p_stream, token, line, r_err_str);
if (err != OK) {
return err;
}
if (token.type == TK_PARENTHESIS_CLOSE) {
value = ref.is_valid() ? Variant(ref) : Variant(obj);
return OK;
}
if (need_comma) {
if (token.type != TK_COMMA) {
r_err_str = "Expected '}' or ','";
return ERR_PARSE_ERROR;
} else {
need_comma = false;
continue;
}
}
if (token.type != TK_STRING) {
r_err_str = "Expected property name as string";
return ERR_PARSE_ERROR;
}
key = token.value;
err = get_token(p_stream, token, line, r_err_str);
if (err != OK) {
return err;
}
if (token.type != TK_COLON) {
r_err_str = "Expected ':'";
return ERR_PARSE_ERROR;
}
at_key = false;
} else {
Error err = get_token(p_stream, token, line, r_err_str);
if (err != OK) {
return err;
}
Variant v;
err = parse_value(token, v, p_stream, line, r_err_str, p_res_parser);
if (err) {
return err;
}
obj->set(key, v);
need_comma = true;
at_key = true;
}
}
} else if (id == "Resource" || id == "SubResource" || id == "ExtResource") {
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_PARENTHESIS_OPEN) {
r_err_str = "Expected '('";
return ERR_PARSE_ERROR;
}
if (p_res_parser && id == "Resource" && p_res_parser->func) {
Ref<Resource> res;
Error err = p_res_parser->func(p_res_parser->userdata, p_stream, res, line, r_err_str);
if (err) {
return err;
}
value = res;
} else if (p_res_parser && id == "ExtResource" && p_res_parser->ext_func) {
Ref<Resource> res;
Error err = p_res_parser->ext_func(p_res_parser->userdata, p_stream, res, line, r_err_str);
if (err) {
// If the file is missing, the error can be ignored.
if (err != ERR_FILE_NOT_FOUND && err != ERR_CANT_OPEN && err != ERR_FILE_CANT_OPEN) {
return err;
}
}
value = res;
} else if (p_res_parser && id == "SubResource" && p_res_parser->sub_func) {
Ref<Resource> res;
Error err = p_res_parser->sub_func(p_res_parser->userdata, p_stream, res, line, r_err_str);
if (err) {
return err;
}
value = res;
} else {
get_token(p_stream, token, line, r_err_str);
if (token.type == TK_STRING) {
String path = token.value;
Ref<Resource> res = ResourceLoader::load(path);
if (res.is_null()) {
r_err_str = "Can't load resource at path: '" + path + "'.";
return ERR_PARSE_ERROR;
}
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_PARENTHESIS_CLOSE) {
r_err_str = "Expected ')'";
return ERR_PARSE_ERROR;
}
value = res;
} else {
r_err_str = "Expected string as argument for Resource().";
return ERR_PARSE_ERROR;
}
}
} else if (id == "Dictionary") {
Error err = OK;
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_BRACKET_OPEN) {
r_err_str = "Expected '['";
return ERR_PARSE_ERROR;
}
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_IDENTIFIER) {
r_err_str = "Expected type identifier for key";
return ERR_PARSE_ERROR;
}
static HashMap<StringName, Variant::Type> builtin_types;
if (builtin_types.is_empty()) {
for (int i = 1; i < Variant::VARIANT_MAX; i++) {
builtin_types[Variant::get_type_name((Variant::Type)i)] = (Variant::Type)i;
}
}
Dictionary dict;
Variant::Type key_type = Variant::NIL;
StringName key_class_name;
Variant key_script;
bool got_comma_token = false;
if (builtin_types.has(token.value)) {
key_type = builtin_types.get(token.value);
} else if (token.value == "Resource" || token.value == "SubResource" || token.value == "ExtResource") {
Variant resource;
err = parse_value(token, resource, p_stream, line, r_err_str, p_res_parser);
if (err) {
if (token.value == "Resource" && err == ERR_PARSE_ERROR && r_err_str == "Expected '('" && token.type == TK_COMMA) {
err = OK;
r_err_str = String();
key_type = Variant::OBJECT;
key_class_name = token.value;
got_comma_token = true;
} else {
return err;
}
} else {
Ref<Script> script = resource;
if (script.is_valid() && script->is_valid()) {
key_type = Variant::OBJECT;
key_class_name = script->get_instance_base_type();
key_script = script;
}
}
} else if (ClassDB::class_exists(token.value)) {
key_type = Variant::OBJECT;
key_class_name = token.value;
}
if (!got_comma_token) {
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_COMMA) {
r_err_str = "Expected ',' after key type";
return ERR_PARSE_ERROR;
}
}
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_IDENTIFIER) {
r_err_str = "Expected type identifier for value";
return ERR_PARSE_ERROR;
}
Variant::Type value_type = Variant::NIL;
StringName value_class_name;
Variant value_script;
bool got_bracket_token = false;
if (builtin_types.has(token.value)) {
value_type = builtin_types.get(token.value);
} else if (token.value == "Resource" || token.value == "SubResource" || token.value == "ExtResource") {
Variant resource;
err = parse_value(token, resource, p_stream, line, r_err_str, p_res_parser);
if (err) {
if (token.value == "Resource" && err == ERR_PARSE_ERROR && r_err_str == "Expected '('" && token.type == TK_BRACKET_CLOSE) {
err = OK;
r_err_str = String();
value_type = Variant::OBJECT;
value_class_name = token.value;
got_comma_token = true;
} else {
return err;
}
} else {
Ref<Script> script = resource;
if (script.is_valid() && script->is_valid()) {
value_type = Variant::OBJECT;
value_class_name = script->get_instance_base_type();
value_script = script;
}
}
} else if (ClassDB::class_exists(token.value)) {
value_type = Variant::OBJECT;
value_class_name = token.value;
}
if (key_type != Variant::NIL || value_type != Variant::NIL) {
dict.set_typed(key_type, key_class_name, key_script, value_type, value_class_name, value_script);
}
if (!got_bracket_token) {
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_BRACKET_CLOSE) {
r_err_str = "Expected ']'";
return ERR_PARSE_ERROR;
}
}
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_PARENTHESIS_OPEN) {
r_err_str = "Expected '('";
return ERR_PARSE_ERROR;
}
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_CURLY_BRACKET_OPEN) {
r_err_str = "Expected '{'";
return ERR_PARSE_ERROR;
}
Dictionary values;
err = _parse_dictionary(values, p_stream, line, r_err_str, p_res_parser);
if (err) {
return err;
}
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_PARENTHESIS_CLOSE) {
r_err_str = "Expected ')'";
return ERR_PARSE_ERROR;
}
dict.assign(values);
value = dict;
} else if (id == "Array") {
Error err = OK;
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_BRACKET_OPEN) {
r_err_str = "Expected '['";
return ERR_PARSE_ERROR;
}
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_IDENTIFIER) {
r_err_str = "Expected type identifier";
return ERR_PARSE_ERROR;
}
static HashMap<String, Variant::Type> builtin_types;
if (builtin_types.is_empty()) {
for (int i = 1; i < Variant::VARIANT_MAX; i++) {
builtin_types[Variant::get_type_name((Variant::Type)i)] = (Variant::Type)i;
}
}
Array array = Array();
bool got_bracket_token = false;
if (builtin_types.has(token.value)) {
array.set_typed(builtin_types.get(token.value), StringName(), Variant());
} else if (token.value == "Resource" || token.value == "SubResource" || token.value == "ExtResource") {
Variant resource;
err = parse_value(token, resource, p_stream, line, r_err_str, p_res_parser);
if (err) {
if (token.value == "Resource" && err == ERR_PARSE_ERROR && r_err_str == "Expected '('" && token.type == TK_BRACKET_CLOSE) {
err = OK;
r_err_str = String();
array.set_typed(Variant::OBJECT, token.value, Variant());
got_bracket_token = true;
} else {
return err;
}
} else {
Ref<Script> script = resource;
if (script.is_valid() && script->is_valid()) {
array.set_typed(Variant::OBJECT, script->get_instance_base_type(), script);
}
}
} else if (ClassDB::class_exists(token.value)) {
array.set_typed(Variant::OBJECT, token.value, Variant());
}
if (!got_bracket_token) {
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_BRACKET_CLOSE) {
r_err_str = "Expected ']'";
return ERR_PARSE_ERROR;
}
}
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_PARENTHESIS_OPEN) {
r_err_str = "Expected '('";
return ERR_PARSE_ERROR;
}
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_BRACKET_OPEN) {
r_err_str = "Expected '['";
return ERR_PARSE_ERROR;
}
Array values;
err = _parse_array(values, p_stream, line, r_err_str, p_res_parser);
if (err) {
return err;
}
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_PARENTHESIS_CLOSE) {
r_err_str = "Expected ')'";
return ERR_PARSE_ERROR;
}
array.assign(values);
value = array;
} else if (id == "PackedByteArray" || id == "PoolByteArray" || id == "ByteArray") {
Vector<uint8_t> args;
Error err = _parse_byte_array(p_stream, args, line, r_err_str);
if (err) {
return err;
}
Vector<uint8_t> arr;
{
int len = args.size();
arr.resize(len);
uint8_t *w = arr.ptrw();
for (int i = 0; i < len; i++) {
w[i] = args[i];
}
}
value = arr;
} else if (id == "PackedInt32Array" || id == "PackedIntArray" || id == "PoolIntArray" || id == "IntArray") {
Vector<int32_t> args;
Error err = _parse_construct<int32_t>(p_stream, args, line, r_err_str);
if (err) {
return err;
}
Vector<int32_t> arr;
{
int32_t len = args.size();
arr.resize(len);
int32_t *w = arr.ptrw();
for (int32_t i = 0; i < len; i++) {
w[i] = int32_t(args[i]);
}
}
value = arr;
} else if (id == "PackedInt64Array") {
Vector<int64_t> args;
Error err = _parse_construct<int64_t>(p_stream, args, line, r_err_str);
if (err) {
return err;
}
Vector<int64_t> arr;
{
int64_t len = args.size();
arr.resize(len);
int64_t *w = arr.ptrw();
for (int64_t i = 0; i < len; i++) {
w[i] = int64_t(args[i]);
}
}
value = arr;
} else if (id == "PackedFloat32Array" || id == "PackedRealArray" || id == "PoolRealArray" || id == "FloatArray") {
Vector<float> args;
Error err = _parse_construct<float>(p_stream, args, line, r_err_str);
if (err) {
return err;
}
Vector<float> arr;
{
int len = args.size();
arr.resize(len);
float *w = arr.ptrw();
for (int i = 0; i < len; i++) {
w[i] = args[i];
}
}
value = arr;
} else if (id == "PackedFloat64Array") {
Vector<double> args;
Error err = _parse_construct<double>(p_stream, args, line, r_err_str);
if (err) {
return err;
}
Vector<double> arr;
{
int len = args.size();
arr.resize(len);
double *w = arr.ptrw();
for (int i = 0; i < len; i++) {
w[i] = args[i];
}
}
value = arr;
} else if (id == "PackedStringArray" || id == "PoolStringArray" || id == "StringArray") {
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_PARENTHESIS_OPEN) {
r_err_str = "Expected '('";
return ERR_PARSE_ERROR;
}
Vector<String> cs;
bool first = true;
while (true) {
if (!first) {
get_token(p_stream, token, line, r_err_str);
if (token.type == TK_COMMA) {
//do none
} else if (token.type == TK_PARENTHESIS_CLOSE) {
break;
} else {
r_err_str = "Expected ',' or ')'";
return ERR_PARSE_ERROR;
}
}
get_token(p_stream, token, line, r_err_str);
if (token.type == TK_PARENTHESIS_CLOSE) {
break;
} else if (token.type != TK_STRING) {
r_err_str = "Expected string";
return ERR_PARSE_ERROR;
}
first = false;
cs.push_back(token.value);
}
Vector<String> arr;
{
int len = cs.size();
arr.resize(len);
String *w = arr.ptrw();
for (int i = 0; i < len; i++) {
w[i] = cs[i];
}
}
value = arr;
} else if (id == "PackedVector2Array" || id == "PoolVector2Array" || id == "Vector2Array") {
Vector<real_t> args;
Error err = _parse_construct<real_t>(p_stream, args, line, r_err_str);
if (err) {
return err;
}
Vector<Vector2> arr;
{
int len = args.size() / 2;
arr.resize(len);
Vector2 *w = arr.ptrw();
for (int i = 0; i < len; i++) {
w[i] = Vector2(args[i * 2 + 0], args[i * 2 + 1]);
}
}
value = arr;
} else if (id == "PackedVector3Array" || id == "PoolVector3Array" || id == "Vector3Array") {
Vector<real_t> args;
Error err = _parse_construct<real_t>(p_stream, args, line, r_err_str);
if (err) {
return err;
}
Vector<Vector3> arr;
{
int len = args.size() / 3;
arr.resize(len);
Vector3 *w = arr.ptrw();
for (int i = 0; i < len; i++) {
w[i] = Vector3(args[i * 3 + 0], args[i * 3 + 1], args[i * 3 + 2]);
}
}
value = arr;
} else if (id == "PackedVector4Array" || id == "PoolVector4Array" || id == "Vector4Array") {
Vector<real_t> args;
Error err = _parse_construct<real_t>(p_stream, args, line, r_err_str);
if (err) {
return err;
}
Vector<Vector4> arr;
{
int len = args.size() / 4;
arr.resize(len);
Vector4 *w = arr.ptrw();
for (int i = 0; i < len; i++) {
w[i] = Vector4(args[i * 4 + 0], args[i * 4 + 1], args[i * 4 + 2], args[i * 4 + 3]);
}
}
value = arr;
} else if (id == "PackedColorArray" || id == "PoolColorArray" || id == "ColorArray") {
Vector<float> args;
Error err = _parse_construct<float>(p_stream, args, line, r_err_str);
if (err) {
return err;
}
Vector<Color> arr;
{
int len = args.size() / 4;
arr.resize(len);
Color *w = arr.ptrw();
for (int i = 0; i < len; i++) {
w[i] = Color(args[i * 4 + 0], args[i * 4 + 1], args[i * 4 + 2], args[i * 4 + 3]);
}
}
value = arr;
} else {
r_err_str = "Unexpected identifier: '" + id + "'.";
return ERR_PARSE_ERROR;
}
// All above branches end up here unless they had an early return.
return OK;
} else if (token.type == TK_NUMBER) {
value = token.value;
return OK;
} else if (token.type == TK_STRING) {
value = token.value;
return OK;
} else if (token.type == TK_STRING_NAME) {
value = token.value;
return OK;
} else if (token.type == TK_COLOR) {
value = token.value;
return OK;
} else {
r_err_str = "Expected value, got " + String(tk_name[token.type]) + ".";
return ERR_PARSE_ERROR;
}
}
Error VariantParser::_parse_array(Array &array, Stream *p_stream, int &line, String &r_err_str, ResourceParser *p_res_parser) {
Token token;
bool need_comma = false;
while (true) {
if (p_stream->is_eof()) {
r_err_str = "Unexpected End of File while parsing array";
return ERR_FILE_CORRUPT;
}
Error err = get_token(p_stream, token, line, r_err_str);
if (err != OK) {
return err;
}
if (token.type == TK_BRACKET_CLOSE) {
return OK;
}
if (need_comma) {
if (token.type != TK_COMMA) {
r_err_str = "Expected ','";
return ERR_PARSE_ERROR;
} else {
need_comma = false;
continue;
}
}
Variant v;
err = parse_value(token, v, p_stream, line, r_err_str, p_res_parser);
if (err) {
return err;
}
array.push_back(v);
need_comma = true;
}
}
Error VariantParser::_parse_dictionary(Dictionary &object, Stream *p_stream, int &line, String &r_err_str, ResourceParser *p_res_parser) {
bool at_key = true;
Variant key;
Token token;
bool need_comma = false;
while (true) {
if (p_stream->is_eof()) {
r_err_str = "Unexpected End of File while parsing dictionary";
return ERR_FILE_CORRUPT;
}
if (at_key) {
Error err = get_token(p_stream, token, line, r_err_str);
if (err != OK) {
return err;
}
if (token.type == TK_CURLY_BRACKET_CLOSE) {
return OK;
}
if (need_comma) {
if (token.type != TK_COMMA) {
r_err_str = "Expected '}' or ','";
return ERR_PARSE_ERROR;
} else {
need_comma = false;
continue;
}
}
err = parse_value(token, key, p_stream, line, r_err_str, p_res_parser);
if (err) {
return err;
}
err = get_token(p_stream, token, line, r_err_str);
if (err != OK) {
return err;
}
if (token.type != TK_COLON) {
r_err_str = "Expected ':'";
return ERR_PARSE_ERROR;
}
at_key = false;
} else {
Error err = get_token(p_stream, token, line, r_err_str);
if (err != OK) {
return err;
}
Variant v;
err = parse_value(token, v, p_stream, line, r_err_str, p_res_parser);
if (err && err != ERR_FILE_MISSING_DEPENDENCIES) {
return err;
}
object[key] = v;
need_comma = true;
at_key = true;
}
}
}
Error VariantParser::_parse_tag(Token &token, Stream *p_stream, int &line, String &r_err_str, Tag &r_tag, ResourceParser *p_res_parser, bool p_simple_tag) {
r_tag.fields.clear();
if (token.type != TK_BRACKET_OPEN) {
r_err_str = "Expected '['";
return ERR_PARSE_ERROR;
}
if (p_simple_tag) {
r_tag.name = "";
r_tag.fields.clear();
bool escaping = false;
if (p_stream->is_utf8()) {
CharString cs;
while (true) {
char c = p_stream->get_char();
if (p_stream->is_eof()) {
r_err_str = "Unexpected EOF while parsing simple tag";
return ERR_PARSE_ERROR;
}
if (c == ']') {
if (escaping) {
escaping = false;
} else {
break;
}
} else if (c == '\\') {
escaping = true;
} else {
escaping = false;
}
cs += c;
}
r_tag.name.parse_utf8(cs.get_data(), cs.length());
} else {
while (true) {
char32_t c = p_stream->get_char();
if (p_stream->is_eof()) {
r_err_str = "Unexpected EOF while parsing simple tag";
return ERR_PARSE_ERROR;
}
if (c == ']') {
if (escaping) {
escaping = false;
} else {
break;
}
} else if (c == '\\') {
escaping = true;
} else {
escaping = false;
}
r_tag.name += String::chr(c);
}
}
r_tag.name = r_tag.name.strip_edges();
return OK;
}
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_IDENTIFIER) {
r_err_str = "Expected identifier (tag name)";
return ERR_PARSE_ERROR;
}
r_tag.name = token.value;
bool parsing_tag = true;
while (true) {
if (p_stream->is_eof()) {
r_err_str = "Unexpected End of File while parsing tag: " + r_tag.name;
return ERR_FILE_CORRUPT;
}
get_token(p_stream, token, line, r_err_str);
if (token.type == TK_BRACKET_CLOSE) {
break;
}
if (parsing_tag && token.type == TK_PERIOD) {
r_tag.name += "."; //support tags such as [someprop.Android] for specific platforms
get_token(p_stream, token, line, r_err_str);
} else if (parsing_tag && token.type == TK_COLON) {
r_tag.name += ":"; //support tags such as [someprop.Android] for specific platforms
get_token(p_stream, token, line, r_err_str);
} else {
parsing_tag = false;
}
if (token.type != TK_IDENTIFIER) {
r_err_str = "Expected Identifier";
return ERR_PARSE_ERROR;
}
String id = token.value;
if (parsing_tag) {
r_tag.name += id;
continue;
}
get_token(p_stream, token, line, r_err_str);
if (token.type != TK_EQUAL) {
return ERR_PARSE_ERROR;
}
get_token(p_stream, token, line, r_err_str);
Variant value;
Error err = parse_value(token, value, p_stream, line, r_err_str, p_res_parser);
if (err) {
return err;
}
r_tag.fields[id] = value;
}
return OK;
}
Error VariantParser::parse_tag(Stream *p_stream, int &line, String &r_err_str, Tag &r_tag, ResourceParser *p_res_parser, bool p_simple_tag) {
Token token;
get_token(p_stream, token, line, r_err_str);
if (token.type == TK_EOF) {
return ERR_FILE_EOF;
}
if (token.type != TK_BRACKET_OPEN) {
r_err_str = "Expected '['";
return ERR_PARSE_ERROR;
}
return _parse_tag(token, p_stream, line, r_err_str, r_tag, p_res_parser, p_simple_tag);
}
Error VariantParser::parse_tag_assign_eof(Stream *p_stream, int &line, String &r_err_str, Tag &r_tag, String &r_assign, Variant &r_value, ResourceParser *p_res_parser, bool p_simple_tag) {
//assign..
r_assign = "";
String what;
while (true) {
char32_t c;
if (p_stream->saved) {
c = p_stream->saved;
p_stream->saved = 0;
} else {
c = p_stream->get_char();
}
if (p_stream->is_eof()) {
return ERR_FILE_EOF;
}
if (c == ';') { //comment
while (true) {
char32_t ch = p_stream->get_char();
if (p_stream->is_eof()) {
return ERR_FILE_EOF;
}
if (ch == '\n') {
line++;
break;
}
}
continue;
}
if (c == '[' && what.length() == 0) {
//it's a tag!
p_stream->saved = '['; //go back one
Error err = parse_tag(p_stream, line, r_err_str, r_tag, p_res_parser, p_simple_tag);
return err;
}
if (c > 32) {
if (c == '"') { //quoted
p_stream->saved = '"';
Token tk;
Error err = get_token(p_stream, tk, line, r_err_str);
if (err) {
return err;
}
if (tk.type != TK_STRING) {
r_err_str = "Error reading quoted string";
return ERR_INVALID_DATA;
}
what = tk.value;
} else if (c != '=') {
what += String::chr(c);
} else {
r_assign = what;
Token token;
get_token(p_stream, token, line, r_err_str);
Error err = parse_value(token, r_value, p_stream, line, r_err_str, p_res_parser);
return err;
}
} else if (c == '\n') {
line++;
}
}
}
Error VariantParser::parse(Stream *p_stream, Variant &r_ret, String &r_err_str, int &r_err_line, ResourceParser *p_res_parser) {
Token token;
Error err = get_token(p_stream, token, r_err_line, r_err_str);
if (err) {
return err;
}
if (token.type == TK_EOF) {
return ERR_FILE_EOF;
}
return parse_value(token, r_ret, p_stream, r_err_line, r_err_str, p_res_parser);
}
//////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////
static String rtos_fix(double p_value) {
if (p_value == 0.0) {
return "0"; //avoid negative zero (-0) being written, which may annoy git, svn, etc. for changes when they don't exist.
} else if (isnan(p_value)) {
return "nan";
} else if (isinf(p_value)) {
if (p_value > 0) {
return "inf";
} else {
return "inf_neg";
}
} else {
return rtoss(p_value);
}
}
Error VariantWriter::write(const Variant &p_variant, StoreStringFunc p_store_string_func, void *p_store_string_ud, EncodeResourceFunc p_encode_res_func, void *p_encode_res_ud, int p_recursion_count, bool p_compat) {
switch (p_variant.get_type()) {
case Variant::NIL: {
p_store_string_func(p_store_string_ud, "null");
} break;
case Variant::BOOL: {
p_store_string_func(p_store_string_ud, p_variant.operator bool() ? "true" : "false");
} break;
case Variant::INT: {
p_store_string_func(p_store_string_ud, itos(p_variant.operator int64_t()));
} break;
case Variant::FLOAT: {
String s = rtos_fix(p_variant.operator double());
if (s != "inf" && s != "inf_neg" && s != "nan") {
if (!s.contains_char('.') && !s.contains_char('e')) {
s += ".0";
}
}
p_store_string_func(p_store_string_ud, s);
} break;
case Variant::STRING: {
String str = p_variant;
str = "\"" + str.c_escape_multiline() + "\"";
p_store_string_func(p_store_string_ud, str);
} break;
// Math types.
case Variant::VECTOR2: {
Vector2 v = p_variant;
p_store_string_func(p_store_string_ud, "Vector2(" + rtos_fix(v.x) + ", " + rtos_fix(v.y) + ")");
} break;
case Variant::VECTOR2I: {
Vector2i v = p_variant;
p_store_string_func(p_store_string_ud, "Vector2i(" + itos(v.x) + ", " + itos(v.y) + ")");
} break;
case Variant::RECT2: {
Rect2 aabb = p_variant;
p_store_string_func(p_store_string_ud, "Rect2(" + rtos_fix(aabb.position.x) + ", " + rtos_fix(aabb.position.y) + ", " + rtos_fix(aabb.size.x) + ", " + rtos_fix(aabb.size.y) + ")");
} break;
case Variant::RECT2I: {
Rect2i aabb = p_variant;
p_store_string_func(p_store_string_ud, "Rect2i(" + itos(aabb.position.x) + ", " + itos(aabb.position.y) + ", " + itos(aabb.size.x) + ", " + itos(aabb.size.y) + ")");
} break;
case Variant::VECTOR3: {
Vector3 v = p_variant;
p_store_string_func(p_store_string_ud, "Vector3(" + rtos_fix(v.x) + ", " + rtos_fix(v.y) + ", " + rtos_fix(v.z) + ")");
} break;
case Variant::VECTOR3I: {
Vector3i v = p_variant;
p_store_string_func(p_store_string_ud, "Vector3i(" + itos(v.x) + ", " + itos(v.y) + ", " + itos(v.z) + ")");
} break;
case Variant::VECTOR4: {
Vector4 v = p_variant;
p_store_string_func(p_store_string_ud, "Vector4(" + rtos_fix(v.x) + ", " + rtos_fix(v.y) + ", " + rtos_fix(v.z) + ", " + rtos_fix(v.w) + ")");
} break;
case Variant::VECTOR4I: {
Vector4i v = p_variant;
p_store_string_func(p_store_string_ud, "Vector4i(" + itos(v.x) + ", " + itos(v.y) + ", " + itos(v.z) + ", " + itos(v.w) + ")");
} break;
case Variant::PLANE: {
Plane p = p_variant;
p_store_string_func(p_store_string_ud, "Plane(" + rtos_fix(p.normal.x) + ", " + rtos_fix(p.normal.y) + ", " + rtos_fix(p.normal.z) + ", " + rtos_fix(p.d) + ")");
} break;
case Variant::AABB: {
AABB aabb = p_variant;
p_store_string_func(p_store_string_ud, "AABB(" + rtos_fix(aabb.position.x) + ", " + rtos_fix(aabb.position.y) + ", " + rtos_fix(aabb.position.z) + ", " + rtos_fix(aabb.size.x) + ", " + rtos_fix(aabb.size.y) + ", " + rtos_fix(aabb.size.z) + ")");
} break;
case Variant::QUATERNION: {
Quaternion quaternion = p_variant;
p_store_string_func(p_store_string_ud, "Quaternion(" + rtos_fix(quaternion.x) + ", " + rtos_fix(quaternion.y) + ", " + rtos_fix(quaternion.z) + ", " + rtos_fix(quaternion.w) + ")");
} break;
case Variant::TRANSFORM2D: {
String s = "Transform2D(";
Transform2D m3 = p_variant;
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 2; j++) {
if (i != 0 || j != 0) {
s += ", ";
}
s += rtos_fix(m3.columns[i][j]);
}
}
p_store_string_func(p_store_string_ud, s + ")");
} break;
case Variant::BASIS: {
String s = "Basis(";
Basis m3 = p_variant;
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
if (i != 0 || j != 0) {
s += ", ";
}
s += rtos_fix(m3.rows[i][j]);
}
}
p_store_string_func(p_store_string_ud, s + ")");
} break;
case Variant::TRANSFORM3D: {
String s = "Transform3D(";
Transform3D t = p_variant;
Basis &m3 = t.basis;
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
if (i != 0 || j != 0) {
s += ", ";
}
s += rtos_fix(m3.rows[i][j]);
}
}
s = s + ", " + rtos_fix(t.origin.x) + ", " + rtos_fix(t.origin.y) + ", " + rtos_fix(t.origin.z);
p_store_string_func(p_store_string_ud, s + ")");
} break;
case Variant::PROJECTION: {
String s = "Projection(";
Projection t = p_variant;
for (int i = 0; i < 4; i++) {
for (int j = 0; j < 4; j++) {
if (i != 0 || j != 0) {
s += ", ";
}
s += rtos_fix(t.columns[i][j]);
}
}
p_store_string_func(p_store_string_ud, s + ")");
} break;
// Misc types.
case Variant::COLOR: {
Color c = p_variant;
p_store_string_func(p_store_string_ud, "Color(" + rtos_fix(c.r) + ", " + rtos_fix(c.g) + ", " + rtos_fix(c.b) + ", " + rtos_fix(c.a) + ")");
} break;
case Variant::STRING_NAME: {
String str = p_variant;
str = "&\"" + str.c_escape() + "\"";
p_store_string_func(p_store_string_ud, str);
} break;
case Variant::NODE_PATH: {
String str = p_variant;
str = "NodePath(\"" + str.c_escape() + "\")";
p_store_string_func(p_store_string_ud, str);
} break;
case Variant::RID: {
RID rid = p_variant;
if (rid == RID()) {
p_store_string_func(p_store_string_ud, "RID()");
} else {
p_store_string_func(p_store_string_ud, "RID(" + itos(rid.get_id()) + ")");
}
} break;
// Do not really store these, but ensure that assignments are not empty.
case Variant::SIGNAL: {
p_store_string_func(p_store_string_ud, "Signal()");
} break;
case Variant::CALLABLE: {
p_store_string_func(p_store_string_ud, "Callable()");
} break;
case Variant::OBJECT: {
if (unlikely(p_recursion_count > MAX_RECURSION)) {
ERR_PRINT("Max recursion reached");
p_store_string_func(p_store_string_ud, "null");
return OK;
}
p_recursion_count++;
Object *obj = p_variant.get_validated_object();
if (!obj) {
p_store_string_func(p_store_string_ud, "null");
break; // don't save it
}
Ref<Resource> res = p_variant;
if (res.is_valid()) {
//is resource
String res_text;
//try external function
if (p_encode_res_func) {
res_text = p_encode_res_func(p_encode_res_ud, res);
}
//try path because it's a file
if (res_text.is_empty() && res->get_path().is_resource_file()) {
//external resource
String path = res->get_path();
res_text = "Resource(\"" + path + "\")";
}
//could come up with some sort of text
if (!res_text.is_empty()) {
p_store_string_func(p_store_string_ud, res_text);
break;
}
}
//store as generic object
p_store_string_func(p_store_string_ud, "Object(" + obj->get_class() + ",");
List<PropertyInfo> props;
obj->get_property_list(&props);
bool first = true;
for (const PropertyInfo &E : props) {
if (E.usage & PROPERTY_USAGE_STORAGE || E.usage & PROPERTY_USAGE_SCRIPT_VARIABLE) {
//must be serialized
if (first) {
first = false;
} else {
p_store_string_func(p_store_string_ud, ",");
}
p_store_string_func(p_store_string_ud, "\"" + E.name + "\":");
write(obj->get(E.name), p_store_string_func, p_store_string_ud, p_encode_res_func, p_encode_res_ud, p_recursion_count, p_compat);
}
}
p_store_string_func(p_store_string_ud, ")\n");
} break;
case Variant::DICTIONARY: {
Dictionary dict = p_variant;
if (dict.is_typed()) {
p_store_string_func(p_store_string_ud, "Dictionary[");
Variant::Type key_builtin_type = (Variant::Type)dict.get_typed_key_builtin();
StringName key_class_name = dict.get_typed_key_class_name();
Ref<Script> key_script = dict.get_typed_key_script();
if (key_script.is_valid()) {
String resource_text;
if (p_encode_res_func) {
resource_text = p_encode_res_func(p_encode_res_ud, key_script);
}
if (resource_text.is_empty() && key_script->get_path().is_resource_file()) {
resource_text = "Resource(\"" + key_script->get_path() + "\")";
}
if (!resource_text.is_empty()) {
p_store_string_func(p_store_string_ud, resource_text);
} else {
ERR_PRINT("Failed to encode a path to a custom script for a dictionary key type.");
p_store_string_func(p_store_string_ud, key_class_name);
}
} else if (key_class_name != StringName()) {
p_store_string_func(p_store_string_ud, key_class_name);
} else if (key_builtin_type == Variant::NIL) {
p_store_string_func(p_store_string_ud, "Variant");
} else {
p_store_string_func(p_store_string_ud, Variant::get_type_name(key_builtin_type));
}
p_store_string_func(p_store_string_ud, ", ");
Variant::Type value_builtin_type = (Variant::Type)dict.get_typed_value_builtin();
StringName value_class_name = dict.get_typed_value_class_name();
Ref<Script> value_script = dict.get_typed_value_script();
if (value_script.is_valid()) {
String resource_text;
if (p_encode_res_func) {
resource_text = p_encode_res_func(p_encode_res_ud, value_script);
}
if (resource_text.is_empty() && value_script->get_path().is_resource_file()) {
resource_text = "Resource(\"" + value_script->get_path() + "\")";
}
if (!resource_text.is_empty()) {
p_store_string_func(p_store_string_ud, resource_text);
} else {
ERR_PRINT("Failed to encode a path to a custom script for a dictionary value type.");
p_store_string_func(p_store_string_ud, value_class_name);
}
} else if (value_class_name != StringName()) {
p_store_string_func(p_store_string_ud, value_class_name);
} else if (value_builtin_type == Variant::NIL) {
p_store_string_func(p_store_string_ud, "Variant");
} else {
p_store_string_func(p_store_string_ud, Variant::get_type_name(value_builtin_type));
}
p_store_string_func(p_store_string_ud, "](");
}
if (unlikely(p_recursion_count > MAX_RECURSION)) {
ERR_PRINT("Max recursion reached");
p_store_string_func(p_store_string_ud, "{}");
} else {
List<Variant> keys;
dict.get_key_list(&keys);
keys.sort_custom<StringLikeVariantOrder>();
if (keys.is_empty()) {
// Avoid unnecessary line break.
p_store_string_func(p_store_string_ud, "{}");
} else {
p_recursion_count++;
p_store_string_func(p_store_string_ud, "{\n");
for (List<Variant>::Element *E = keys.front(); E; E = E->next()) {
write(E->get(), p_store_string_func, p_store_string_ud, p_encode_res_func, p_encode_res_ud, p_recursion_count, p_compat);
p_store_string_func(p_store_string_ud, ": ");
write(dict[E->get()], p_store_string_func, p_store_string_ud, p_encode_res_func, p_encode_res_ud, p_recursion_count, p_compat);
if (E->next()) {
p_store_string_func(p_store_string_ud, ",\n");
} else {
p_store_string_func(p_store_string_ud, "\n");
}
}
p_store_string_func(p_store_string_ud, "}");
}
}
if (dict.is_typed()) {
p_store_string_func(p_store_string_ud, ")");
}
} break;
case Variant::ARRAY: {
Array array = p_variant;
if (array.is_typed()) {
p_store_string_func(p_store_string_ud, "Array[");
Variant::Type builtin_type = (Variant::Type)array.get_typed_builtin();
StringName class_name = array.get_typed_class_name();
Ref<Script> script = array.get_typed_script();
if (script.is_valid()) {
String resource_text = String();
if (p_encode_res_func) {
resource_text = p_encode_res_func(p_encode_res_ud, script);
}
if (resource_text.is_empty() && script->get_path().is_resource_file()) {
resource_text = "Resource(\"" + script->get_path() + "\")";
}
if (!resource_text.is_empty()) {
p_store_string_func(p_store_string_ud, resource_text);
} else {
ERR_PRINT("Failed to encode a path to a custom script for an array type.");
p_store_string_func(p_store_string_ud, class_name);
}
} else if (class_name != StringName()) {
p_store_string_func(p_store_string_ud, class_name);
} else {
p_store_string_func(p_store_string_ud, Variant::get_type_name(builtin_type));
}
p_store_string_func(p_store_string_ud, "](");
}
if (unlikely(p_recursion_count > MAX_RECURSION)) {
ERR_PRINT("Max recursion reached");
p_store_string_func(p_store_string_ud, "[]");
} else {
p_recursion_count++;
p_store_string_func(p_store_string_ud, "[");
bool first = true;
for (const Variant &var : array) {
if (first) {
first = false;
} else {
p_store_string_func(p_store_string_ud, ", ");
}
write(var, p_store_string_func, p_store_string_ud, p_encode_res_func, p_encode_res_ud, p_recursion_count, p_compat);
}
p_store_string_func(p_store_string_ud, "]");
}
if (array.is_typed()) {
p_store_string_func(p_store_string_ud, ")");
}
} break;
case Variant::PACKED_BYTE_ARRAY: {
p_store_string_func(p_store_string_ud, "PackedByteArray(");
Vector<uint8_t> data = p_variant;
if (p_compat) {
int len = data.size();
const uint8_t *ptr = data.ptr();
for (int i = 0; i < len; i++) {
if (i > 0) {
p_store_string_func(p_store_string_ud, ", ");
}
p_store_string_func(p_store_string_ud, itos(ptr[i]));
}
} else if (data.size() > 0) {
p_store_string_func(p_store_string_ud, "\"");
p_store_string_func(p_store_string_ud, CryptoCore::b64_encode_str(data.ptr(), data.size()));
p_store_string_func(p_store_string_ud, "\"");
}
p_store_string_func(p_store_string_ud, ")");
} break;
case Variant::PACKED_INT32_ARRAY: {
p_store_string_func(p_store_string_ud, "PackedInt32Array(");
Vector<int32_t> data = p_variant;
int32_t len = data.size();
const int32_t *ptr = data.ptr();
for (int32_t i = 0; i < len; i++) {
if (i > 0) {
p_store_string_func(p_store_string_ud, ", ");
}
p_store_string_func(p_store_string_ud, itos(ptr[i]));
}
p_store_string_func(p_store_string_ud, ")");
} break;
case Variant::PACKED_INT64_ARRAY: {
p_store_string_func(p_store_string_ud, "PackedInt64Array(");
Vector<int64_t> data = p_variant;
int64_t len = data.size();
const int64_t *ptr = data.ptr();
for (int64_t i = 0; i < len; i++) {
if (i > 0) {
p_store_string_func(p_store_string_ud, ", ");
}
p_store_string_func(p_store_string_ud, itos(ptr[i]));
}
p_store_string_func(p_store_string_ud, ")");
} break;
case Variant::PACKED_FLOAT32_ARRAY: {
p_store_string_func(p_store_string_ud, "PackedFloat32Array(");
Vector<float> data = p_variant;
int len = data.size();
const float *ptr = data.ptr();
for (int i = 0; i < len; i++) {
if (i > 0) {
p_store_string_func(p_store_string_ud, ", ");
}
p_store_string_func(p_store_string_ud, rtos_fix(ptr[i]));
}
p_store_string_func(p_store_string_ud, ")");
} break;
case Variant::PACKED_FLOAT64_ARRAY: {
p_store_string_func(p_store_string_ud, "PackedFloat64Array(");
Vector<double> data = p_variant;
int len = data.size();
const double *ptr = data.ptr();
for (int i = 0; i < len; i++) {
if (i > 0) {
p_store_string_func(p_store_string_ud, ", ");
}
p_store_string_func(p_store_string_ud, rtos_fix(ptr[i]));
}
p_store_string_func(p_store_string_ud, ")");
} break;
case Variant::PACKED_STRING_ARRAY: {
p_store_string_func(p_store_string_ud, "PackedStringArray(");
Vector<String> data = p_variant;
int len = data.size();
const String *ptr = data.ptr();
for (int i = 0; i < len; i++) {
if (i > 0) {
p_store_string_func(p_store_string_ud, ", ");
}
p_store_string_func(p_store_string_ud, "\"" + ptr[i].c_escape() + "\"");
}
p_store_string_func(p_store_string_ud, ")");
} break;
case Variant::PACKED_VECTOR2_ARRAY: {
p_store_string_func(p_store_string_ud, "PackedVector2Array(");
Vector<Vector2> data = p_variant;
int len = data.size();
const Vector2 *ptr = data.ptr();
for (int i = 0; i < len; i++) {
if (i > 0) {
p_store_string_func(p_store_string_ud, ", ");
}
p_store_string_func(p_store_string_ud, rtos_fix(ptr[i].x) + ", " + rtos_fix(ptr[i].y));
}
p_store_string_func(p_store_string_ud, ")");
} break;
case Variant::PACKED_VECTOR3_ARRAY: {
p_store_string_func(p_store_string_ud, "PackedVector3Array(");
Vector<Vector3> data = p_variant;
int len = data.size();
const Vector3 *ptr = data.ptr();
for (int i = 0; i < len; i++) {
if (i > 0) {
p_store_string_func(p_store_string_ud, ", ");
}
p_store_string_func(p_store_string_ud, rtos_fix(ptr[i].x) + ", " + rtos_fix(ptr[i].y) + ", " + rtos_fix(ptr[i].z));
}
p_store_string_func(p_store_string_ud, ")");
} break;
case Variant::PACKED_COLOR_ARRAY: {
p_store_string_func(p_store_string_ud, "PackedColorArray(");
Vector<Color> data = p_variant;
int len = data.size();
const Color *ptr = data.ptr();
for (int i = 0; i < len; i++) {
if (i > 0) {
p_store_string_func(p_store_string_ud, ", ");
}
p_store_string_func(p_store_string_ud, rtos_fix(ptr[i].r) + ", " + rtos_fix(ptr[i].g) + ", " + rtos_fix(ptr[i].b) + ", " + rtos_fix(ptr[i].a));
}
p_store_string_func(p_store_string_ud, ")");
} break;
case Variant::PACKED_VECTOR4_ARRAY: {
p_store_string_func(p_store_string_ud, "PackedVector4Array(");
Vector<Vector4> data = p_variant;
int len = data.size();
const Vector4 *ptr = data.ptr();
for (int i = 0; i < len; i++) {
if (i > 0) {
p_store_string_func(p_store_string_ud, ", ");
}
p_store_string_func(p_store_string_ud, rtos_fix(ptr[i].x) + ", " + rtos_fix(ptr[i].y) + ", " + rtos_fix(ptr[i].z) + ", " + rtos_fix(ptr[i].w));
}
p_store_string_func(p_store_string_ud, ")");
} break;
default: {
ERR_PRINT("Unknown variant type");
return ERR_BUG;
}
}
return OK;
}
static Error _write_to_str(void *ud, const String &p_string) {
String *str = (String *)ud;
(*str) += p_string;
return OK;
}
Error VariantWriter::write_to_string(const Variant &p_variant, String &r_string, EncodeResourceFunc p_encode_res_func, void *p_encode_res_ud, bool p_compat) {
r_string = String();
return write(p_variant, _write_to_str, &r_string, p_encode_res_func, p_encode_res_ud, 0, p_compat);
}
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