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virtualx-engine/core/variant_parser.cpp
Juan Linietsky 33b5c57199 Variant: Added 64-bit packed arrays, renamed Variant::REAL to FLOAT. 
- Renames PackedIntArray to PackedInt32Array.
- Renames PackedFloatArray to PackedFloat32Array.
- Adds PackedInt64Array and PackedFloat64Array.
- Renames Variant::REAL to Variant::FLOAT for consistency.

Packed arrays are for storing large amount of data and creating stuff like
meshes, buffers. textures, etc. Forcing them to be 64 is a huge waste of
memory. That said, many users requested the ability to have 64 bits packed
arrays for their games, so this is just an optional added type.

For Variant, the float datatype is always 64 bits, and exposed as `float`.

We still have `real_t` which is the datatype that can change from 32 to 64
bits depending on a compile flag (not entirely working right now, but that's
the idea). It affects math related datatypes and code only.

Neither Variant nor PackedArray make use of real_t, which is only intended
for math precision, so the term is removed from there to keep only float.
2020-02-25 12:55:53 +01:00

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/*************************************************************************/
/* variant_parser.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 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 "variant_parser.h"
#include "core/io/resource_loader.h"
#include "core/os/input_event.h"
#include "core/os/keyboard.h"
#include "core/string_buffer.h"
CharType VariantParser::StreamFile::get_char() {
return f->get_8();
}
bool VariantParser::StreamFile::is_utf8() const {
return true;
}
bool VariantParser::StreamFile::is_eof() const {
return f->eof_reached();
}
CharType VariantParser::StreamString::get_char() {
if (pos > s.length()) {
return 0;
} else if (pos == s.length()) {
// You need to try to read again when you have reached the end for EOF to be reported,
// so this works the same as files (like StreamFile does)
pos++;
return 0;
} else {
return s[pos++];
}
}
bool VariantParser::StreamString::is_utf8() const {
return false;
}
bool VariantParser::StreamString::is_eof() const {
return pos > s.length();
}
/////////////////////////////////////////////////////////////////////////////////////////////////
const char *VariantParser::tk_name[TK_MAX] = {
"'{'",
"'}'",
"'['",
"']'",
"'('",
"')'",
"identifier",
"string",
"string_name",
"number",
"color",
"':'",
"','",
"'.'",
"'='",
"EOF",
"ERROR"
};
Error VariantParser::get_token(Stream *p_stream, Token &r_token, int &line, String &r_err_str) {
bool string_name = false;
while (true) {
CharType 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) {
CharType ch = p_stream->get_char();
if (p_stream->is_eof()) {
r_token.type = TK_EOF;
return OK;
}
if (ch == '\n')
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) {
CharType ch = p_stream->get_char();
if (p_stream->is_eof()) {
r_token.type = TK_EOF;
return OK;
} else if ((ch >= '0' && ch <= '9') || (ch >= 'a' && ch <= 'f') || (ch >= 'A' && ch <= 'F')) {
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;
};
case '@': {
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;
while (true) {
CharType 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...
CharType next = p_stream->get_char();
if (next == 0) {
r_err_str = "Unterminated String";
r_token.type = TK_ERROR;
return ERR_PARSE_ERROR;
}
CharType 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': {
//hex number
for (int j = 0; j < 4; j++) {
CharType c = p_stream->get_char();
if (c == 0) {
r_err_str = "Unterminated String";
r_token.type = TK_ERROR;
return ERR_PARSE_ERROR;
}
if (!((c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F'))) {
r_err_str = "Malformed hex constant in string";
r_token.type = TK_ERROR;
return ERR_PARSE_ERROR;
}
CharType v;
if (c >= '0' && c <= '9') {
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;
}
str += res;
} else {
if (ch == '\n')
line++;
str += ch;
}
}
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);
string_name = false; //reset
} 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();
}
CharType c = cchar;
bool exp_sign = false;
bool exp_beg = false;
bool is_float = false;
while (true) {
switch (reading) {
case READING_INT: {
if (c >= '0' && c <= '9') {
//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 (c >= '0' && c <= '9') {
} else if (c == 'e') {
reading = READING_EXP;
} else {
reading = READING_DONE;
}
} break;
case READING_EXP: {
if (c >= '0' && c <= '9') {
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 ((cchar >= 'A' && cchar <= 'Z') || (cchar >= 'a' && cchar <= 'z') || cchar == '_') {
StringBuffer<> id;
bool first = true;
while ((cchar >= 'A' && cchar <= 'Z') || (cchar >= 'a' && cchar <= 'z') || cchar == '_' || (!first && cchar >= '0' && cchar <= '9')) {
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) {
CharType 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 <class 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) {
r_err_str = "Expected float in constructor";
return ERR_PARSE_ERROR;
}
r_construct.push_back(token.value);
first = false;
}
return OK;
}
Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream, int &line, String &r_err_str, ResourceParser *p_res_parser) {
/* {
Error err = get_token(p_stream,token,line,r_err_str);
if (err)
return err;
}*/
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 == "Vector2") {
Vector<float> args;
Error err = _parse_construct<float>(p_stream, args, line, r_err_str);
if (err)
return err;
if (args.size() != 2) {
r_err_str = "Expected 2 arguments for constructor";
}
value = Vector2(args[0], args[1]);
return OK;
} 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";
}
value = Vector2i(args[0], args[1]);
return OK;
} else if (id == "Rect2") {
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";
}
value = Rect2(args[0], args[1], args[2], args[3]);
return OK;
} 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";
}
value = Rect2i(args[0], args[1], args[2], args[3]);
return OK;
} else if (id == "Vector3") {
Vector<float> args;
Error err = _parse_construct<float>(p_stream, args, line, r_err_str);
if (err)
return err;
if (args.size() != 3) {
r_err_str = "Expected 3 arguments for constructor";
}
value = Vector3(args[0], args[1], args[2]);
return OK;
} 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";
}
value = Vector3i(args[0], args[1], args[2]);
return OK;
} else if (id == "Transform2D" || id == "Matrix32") { //compatibility
Vector<float> args;
Error err = _parse_construct<float>(p_stream, args, line, r_err_str);
if (err)
return err;
if (args.size() != 6) {
r_err_str = "Expected 6 arguments for constructor";
}
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;
return OK;
} else if (id == "Plane") {
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";
}
value = Plane(args[0], args[1], args[2], args[3]);
return OK;
} else if (id == "Quat") {
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";
}
value = Quat(args[0], args[1], args[2], args[3]);
return OK;
} else if (id == "AABB" || id == "Rect3") {
Vector<float> args;
Error err = _parse_construct<float>(p_stream, args, line, r_err_str);
if (err)
return err;
if (args.size() != 6) {
r_err_str = "Expected 6 arguments for constructor";
}
value = AABB(Vector3(args[0], args[1], args[2]), Vector3(args[3], args[4], args[5]));
return OK;
} else if (id == "Basis" || id == "Matrix3") { //compatibility
Vector<float> args;
Error err = _parse_construct<float>(p_stream, args, line, r_err_str);
if (err)
return err;
if (args.size() != 9) {
r_err_str = "Expected 9 arguments for constructor";
}
value = Basis(args[0], args[1], args[2], args[3], args[4], args[5], args[6], args[7], args[8]);
return OK;
} else if (id == "Transform") {
Vector<float> args;
Error err = _parse_construct<float>(p_stream, args, line, r_err_str);
if (err)
return err;
if (args.size() != 12) {
r_err_str = "Expected 12 arguments for constructor";
}
value = Transform(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]));
return OK;
} 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";
}
value = Color(args[0], args[1], args[2], args[3]);
return OK;
} 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);
if (token.type != TK_NUMBER) {
r_err_str = "Expected number as argument";
return ERR_PARSE_ERROR;
}
value = 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;
}
return OK;
} 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::instance(type);
if (!obj) {
r_err_str = "Can't instance Object() of type: " + type;
return ERR_PARSE_ERROR;
}
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;
Token token2;
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, token2, line, r_err_str);
if (err != OK)
return err;
if (token2.type == TK_PARENTHESIS_CLOSE) {
Reference *reference = Object::cast_to<Reference>(obj);
if (reference) {
value = REF(reference);
} else {
value = obj;
}
return OK;
}
if (need_comma) {
if (token2.type != TK_COMMA) {
r_err_str = "Expected '}' or ','";
return ERR_PARSE_ERROR;
} else {
need_comma = false;
continue;
}
}
if (token2.type != TK_STRING) {
r_err_str = "Expected property name as string";
return ERR_PARSE_ERROR;
}
key = token2.value;
err = get_token(p_stream, token2, line, r_err_str);
if (err != OK)
return err;
if (token2.type != TK_COLON) {
r_err_str = "Expected ':'";
return ERR_PARSE_ERROR;
}
at_key = false;
} else {
Error err = get_token(p_stream, token2, line, r_err_str);
if (err != OK)
return err;
Variant v;
err = parse_value(token2, 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) {
RES res;
Error err = p_res_parser->func(p_res_parser->userdata, p_stream, res, line, r_err_str);
if (err)
return err;
value = res;
return OK;
} else if (p_res_parser && id == "ExtResource" && p_res_parser->ext_func) {
RES res;
Error err = p_res_parser->ext_func(p_res_parser->userdata, p_stream, res, line, r_err_str);
if (err)
return err;
value = res;
return OK;
} else if (p_res_parser && id == "SubResource" && p_res_parser->sub_func) {
RES 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;
return OK;
} else {
get_token(p_stream, token, line, r_err_str);
if (token.type == TK_STRING) {
String path = token.value;
RES 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;
return OK;
} else {
r_err_str = "Expected string as argument for Resource().";
return ERR_PARSE_ERROR;
}
}
} else if (id == "PackedByteArray" || id == "PoolByteArray" || id == "ByteArray") {
Vector<uint8_t> args;
Error err = _parse_construct<uint8_t>(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;
return OK;
} 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;
return OK;
} 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;
return OK;
} 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;
return OK;
} 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;
return OK;
} 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;
return OK;
} else if (id == "PackedVector2Array" || id == "PoolVector2Array" || id == "Vector2Array") {
Vector<float> args;
Error err = _parse_construct<float>(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;
return OK;
} else if (id == "PackedVector3Array" || id == "PoolVector3Array" || id == "Vector3Array") {
Vector<float> args;
Error err = _parse_construct<float>(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;
return OK;
} 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;
return OK;
} else {
r_err_str = "Unexpected identifier: '" + id + "'.";
return ERR_PARSE_ERROR;
}
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)
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();
while (true) {
CharType 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 == ']')
break;
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) {
CharType 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) {
CharType ch = p_stream->get_char();
if (p_stream->is_eof()) {
return ERR_FILE_EOF;
}
if (ch == '\n')
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 rtosfix(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
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) {
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 = rtosfix(p_variant.operator real_t());
if (s.find(".") == -1 && s.find("e") == -1)
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;
case Variant::VECTOR2: {
Vector2 v = p_variant;
p_store_string_func(p_store_string_ud, "Vector2( " + rtosfix(v.x) + ", " + rtosfix(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( " + rtosfix(aabb.position.x) + ", " + rtosfix(aabb.position.y) + ", " + rtosfix(aabb.size.x) + ", " + rtosfix(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( " + rtosfix(v.x) + ", " + rtosfix(v.y) + ", " + rtosfix(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::PLANE: {
Plane p = p_variant;
p_store_string_func(p_store_string_ud, "Plane( " + rtosfix(p.normal.x) + ", " + rtosfix(p.normal.y) + ", " + rtosfix(p.normal.z) + ", " + rtosfix(p.d) + " )");
} break;
case Variant::AABB: {
AABB aabb = p_variant;
p_store_string_func(p_store_string_ud, "AABB( " + rtosfix(aabb.position.x) + ", " + rtosfix(aabb.position.y) + ", " + rtosfix(aabb.position.z) + ", " + rtosfix(aabb.size.x) + ", " + rtosfix(aabb.size.y) + ", " + rtosfix(aabb.size.z) + " )");
} break;
case Variant::QUAT: {
Quat quat = p_variant;
p_store_string_func(p_store_string_ud, "Quat( " + rtosfix(quat.x) + ", " + rtosfix(quat.y) + ", " + rtosfix(quat.z) + ", " + rtosfix(quat.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 += rtosfix(m3.elements[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 += rtosfix(m3.elements[i][j]);
}
}
p_store_string_func(p_store_string_ud, s + " )");
} break;
case Variant::TRANSFORM: {
String s = "Transform( ";
Transform 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 += rtosfix(m3.elements[i][j]);
}
}
s = s + ", " + rtosfix(t.origin.x) + ", " + rtosfix(t.origin.y) + ", " + rtosfix(t.origin.z);
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( " + rtosfix(c.r) + ", " + rtosfix(c.g) + ", " + rtosfix(c.b) + ", " + rtosfix(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::OBJECT: {
Object *obj = p_variant;
if (!obj) {
p_store_string_func(p_store_string_ud, "null");
break; // don't save it
}
RES 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 == String() && 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 != String()) {
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 (List<PropertyInfo>::Element *E = props.front(); E; E = E->next()) {
if (E->get().usage & PROPERTY_USAGE_STORAGE || E->get().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->get().name + "\":");
write(obj->get(E->get().name), p_store_string_func, p_store_string_ud, p_encode_res_func, p_encode_res_ud);
}
}
p_store_string_func(p_store_string_ud, ")\n");
} break;
case Variant::DICTIONARY: {
Dictionary dict = p_variant;
List<Variant> keys;
dict.get_key_list(&keys);
keys.sort();
p_store_string_func(p_store_string_ud, "{\n");
for (List<Variant>::Element *E = keys.front(); E; E = E->next()) {
/*
if (!_check_type(dict[E->get()]))
continue;
*/
write(E->get(), p_store_string_func, p_store_string_ud, p_encode_res_func, p_encode_res_ud);
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);
if (E->next())
p_store_string_func(p_store_string_ud, ",\n");
}
p_store_string_func(p_store_string_ud, "\n}");
} break;
case Variant::ARRAY: {
p_store_string_func(p_store_string_ud, "[ ");
Array array = p_variant;
int len = array.size();
for (int i = 0; i < len; i++) {
if (i > 0)
p_store_string_func(p_store_string_ud, ", ");
write(array[i], p_store_string_func, p_store_string_ud, p_encode_res_func, p_encode_res_ud);
}
p_store_string_func(p_store_string_ud, " ]");
} break;
case Variant::PACKED_BYTE_ARRAY: {
p_store_string_func(p_store_string_ud, "PackedByteArray( ");
String s;
Vector<uint8_t> data = p_variant;
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]));
}
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, rtosfix(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, rtosfix(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();
String s;
//write_string("\n");
for (int i = 0; i < len; i++) {
if (i > 0)
p_store_string_func(p_store_string_ud, ", ");
String str = ptr[i];
p_store_string_func(p_store_string_ud, "\"" + str.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, rtosfix(ptr[i].x) + ", " + rtosfix(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, rtosfix(ptr[i].x) + ", " + rtosfix(ptr[i].y) + ", " + rtosfix(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, rtosfix(ptr[i].r) + ", " + rtosfix(ptr[i].g) + ", " + rtosfix(ptr[i].b) + ", " + rtosfix(ptr[i].a));
}
p_store_string_func(p_store_string_ud, " )");
} break;
default: {
}
}
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) {
r_string = String();
return write(p_variant, _write_to_str, &r_string, p_encode_res_func, p_encode_res_ud);
}
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