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[3.x] VariantParser: NaN, INF read/write bug fixed #47500

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merged 1 commit into from
Oct 5, 2021
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[3.x] VariantParser: NaN, INF read/write bug fixed #47500

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74 changes: 53 additions & 21 deletions core/variant_parser.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -87,6 +87,17 @@ const char *VariantParser::tk_name[TK_MAX] = {
"ERROR"
};

static double stor_fix(const String &p_str) {
if (p_str == "inf") {
return Math_INF;
} else if (p_str == "inf_neg") {
return -Math_INF;
} else if (p_str == "nan") {
return Math_NAN;
}
return -1;
}

Error VariantParser::get_token(Stream *p_stream, Token &r_token, int &line, String &r_err_str) {
while (true) {
CharType cchar;
Expand Down Expand Up @@ -451,8 +462,19 @@ Error VariantParser::_parse_construct(Stream *p_stream, Vector<T> &r_construct,
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;
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);
Expand Down Expand Up @@ -489,6 +511,8 @@ Error VariantParser::parse_value(Token &token, Variant &value, Stream *p_stream,
value = Variant();
} else if (id == "inf") {
value = Math_INF;
} else if (id == "inf_neg") {
value = -Math_INF;
} else if (id == "nan") {
value = Math_NAN;
} else if (id == "Vector2") {
Expand Down Expand Up @@ -1494,11 +1518,19 @@ Error VariantParser::parse(Stream *p_stream, Variant &r_ret, String &r_err_str,

//////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////

static String rtosfix(double p_value) {
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);
}
Expand All @@ -1516,8 +1548,8 @@ Error VariantWriter::write(const Variant &p_variant, StoreStringFunc p_store_str
p_store_string_func(p_store_string_ud, itos(p_variant.operator int64_t()));
} break;
case Variant::REAL: {
String s = rtosfix(p_variant.operator real_t());
if (s != "inf" && s != "nan") {
String s = rtos_fix(p_variant.operator real_t());
if (s != "inf" && s != "inf_neg" && s != "nan") {
if (s.find(".") == -1 && s.find("e") == -1) {
s += ".0";
}
Expand All @@ -1532,30 +1564,30 @@ Error VariantWriter::write(const Variant &p_variant, StoreStringFunc p_store_str
} break;
case Variant::VECTOR2: {
Vector2 v = p_variant;
p_store_string_func(p_store_string_ud, "Vector2( " + rtosfix(v.x) + ", " + rtosfix(v.y) + " )");
p_store_string_func(p_store_string_ud, "Vector2( " + rtos_fix(v.x) + ", " + rtos_fix(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) + " )");
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::VECTOR3: {
Vector3 v = p_variant;
p_store_string_func(p_store_string_ud, "Vector3( " + rtosfix(v.x) + ", " + rtosfix(v.y) + ", " + rtosfix(v.z) + " )");
p_store_string_func(p_store_string_ud, "Vector3( " + rtos_fix(v.x) + ", " + rtos_fix(v.y) + ", " + rtos_fix(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) + " )");
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( " + rtosfix(aabb.position.x) + ", " + rtosfix(aabb.position.y) + ", " + rtosfix(aabb.position.z) + ", " + rtosfix(aabb.size.x) + ", " + rtosfix(aabb.size.y) + ", " + rtosfix(aabb.size.z) + " )");
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::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) + " )");
p_store_string_func(p_store_string_ud, "Quat( " + rtos_fix(quat.x) + ", " + rtos_fix(quat.y) + ", " + rtos_fix(quat.z) + ", " + rtos_fix(quat.w) + " )");

} break;
case Variant::TRANSFORM2D: {
Expand All @@ -1566,7 +1598,7 @@ Error VariantWriter::write(const Variant &p_variant, StoreStringFunc p_store_str
if (i != 0 || j != 0) {
s += ", ";
}
s += rtosfix(m3.elements[i][j]);
s += rtos_fix(m3.elements[i][j]);
}
}

Expand All @@ -1581,7 +1613,7 @@ Error VariantWriter::write(const Variant &p_variant, StoreStringFunc p_store_str
if (i != 0 || j != 0) {
s += ", ";
}
s += rtosfix(m3.elements[i][j]);
s += rtos_fix(m3.elements[i][j]);
}
}

Expand All @@ -1597,19 +1629,19 @@ Error VariantWriter::write(const Variant &p_variant, StoreStringFunc p_store_str
if (i != 0 || j != 0) {
s += ", ";
}
s += rtosfix(m3.elements[i][j]);
s += rtos_fix(m3.elements[i][j]);
}
}

s = s + ", " + rtosfix(t.origin.x) + ", " + rtosfix(t.origin.y) + ", " + rtosfix(t.origin.z);
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;

// 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) + " )");
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::NODE_PATH: {
Expand Down Expand Up @@ -1765,7 +1797,7 @@ Error VariantWriter::write(const Variant &p_variant, StoreStringFunc p_store_str
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, rtos_fix(ptr[i]));
}

p_store_string_func(p_store_string_ud, " )");
Expand Down Expand Up @@ -1802,7 +1834,7 @@ Error VariantWriter::write(const Variant &p_variant, StoreStringFunc p_store_str
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, rtos_fix(ptr[i].x) + ", " + rtos_fix(ptr[i].y));
}

p_store_string_func(p_store_string_ud, " )");
Expand All @@ -1819,7 +1851,7 @@ Error VariantWriter::write(const Variant &p_variant, StoreStringFunc p_store_str
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, rtos_fix(ptr[i].x) + ", " + rtos_fix(ptr[i].y) + ", " + rtos_fix(ptr[i].z));
}

p_store_string_func(p_store_string_ud, " )");
Expand All @@ -1838,7 +1870,7 @@ Error VariantWriter::write(const Variant &p_variant, StoreStringFunc p_store_str
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, 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, " )");

Expand Down