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qtdeclarative/qmljs_runtime.cpp

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#include "qmljs_runtime.h"
#include "qmljs_objects.h"
#include <cstdio>
#include <cassert>
Value Value::string(Context *ctx, const QString &s)
{
return string(ctx, String::get(ctx, s));
}
extern "C" {
void __qmljs_string_literal_undefined(Context *ctx, Value *result)
{
__qmljs_init_string(ctx, result, String::get(ctx, QLatin1String("undefined")));
}
void __qmljs_string_literal_null(Context *ctx, Value *result)
{
__qmljs_init_string(ctx, result, String::get(ctx, QLatin1String("null")));
}
void __qmljs_string_literal_true(Context *ctx, Value *result)
{
__qmljs_init_string(ctx, result, String::get(ctx, QLatin1String("true")));
}
void __qmljs_string_literal_false(Context *ctx, Value *result)
{
__qmljs_init_string(ctx, result, String::get(ctx, QLatin1String("false")));
}
void __qmljs_string_literal_object(Context *ctx, Value *result)
{
__qmljs_init_string(ctx, result, String::get(ctx, QLatin1String("object")));
}
void __qmljs_string_literal_boolean(Context *ctx, Value *result)
{
__qmljs_init_string(ctx, result, String::get(ctx, QLatin1String("boolean")));
}
void __qmljs_string_literal_number(Context *ctx, Value *result)
{
__qmljs_init_string(ctx, result, String::get(ctx, QLatin1String("number")));
}
void __qmljs_string_literal_string(Context *ctx, Value *result)
{
__qmljs_init_string(ctx, result, String::get(ctx, QLatin1String("string")));
}
void __qmljs_string_literal_function(Context *ctx, Value *result)
{
__qmljs_init_string(ctx, result, String::get(ctx, QLatin1String("function")));
}
void __qmljs_delete(Context *ctx, Value *result, const Value *value)
{
(void) ctx;
(void) result;
(void) value;
}
void __qmljs_instanceof(Context *ctx, Value *result, const Value *left, const Value *right)
{
if (right->type == OBJECT_TYPE) {
if (FunctionObject *function = right->objectValue->asFunctionObject()) {
bool r = function->hasInstance(*left);
__qmljs_init_boolean(ctx, result, r);
return;
}
}
__qmljs_throw_type_error(ctx, result);
}
void __qmljs_in(Context *ctx, Value *result, const Value *left, const Value *right)
{
if (right->type == OBJECT_TYPE) {
Value s;
__qmljs_to_string(ctx, &s, left);
bool r = right->objectValue->hasProperty(s.stringValue);
__qmljs_init_boolean(ctx, result, r);
} else {
__qmljs_throw_type_error(ctx, result);
}
}
int __qmljs_string_length(Context *, String *string)
{
return string->text().length();
}
double __qmljs_string_to_number(Context *, String *string)
{
bool ok;
return string->text().toDouble(&ok); // ### TODO
}
void __qmljs_string_from_number(Context *ctx, Value *result, double number)
{
String *string = String::get(ctx, QString::number(number, 'g', 16));
__qmljs_init_string(ctx, result, string);
}
bool __qmljs_string_compare(Context *, String *left, String *right)
{
return left->text() < right->text();
}
bool __qmljs_string_equal(Context *, String *left, String *right)
{
return left == right ||
(left->hashValue() == right->hashValue() &&
left->text() == right->text());
}
String *__qmljs_string_concat(Context *ctx, String *first, String *second)
{
return String::get(ctx, first->text() + second->text());
}
bool __qmljs_is_function(Context *, const Value *value)
{
return value->objectValue->asFunctionObject() != 0;
}
void __qmljs_object_default_value(Context *ctx, Value *result, Object *object, int typeHint)
{
object->defaultValue(result, typeHint);
}
void __qmljs_throw_type_error(Context *ctx, Value *result)
{
__qmljs_init_object(ctx, result, new (GC) ErrorObject(String::get(ctx, QLatin1String("type error"))));
}
void __qmljs_new_boolean_object(Context *ctx, Value *result, bool boolean)
{
Value value;
__qmljs_init_boolean(ctx, &value, boolean);
__qmljs_init_object(ctx, result, new (GC) BooleanObject(value));
}
void __qmljs_new_number_object(Context *ctx, Value *result, double number)
{
Value value;
__qmljs_init_number(ctx, &value, number);
__qmljs_init_object(ctx, result, new (GC) NumberObject(value));
}
void __qmljs_new_string_object(Context *ctx, Value *result, String *string)
{
Value value;
__qmljs_init_string(ctx, &value, string);
__qmljs_init_object(ctx, result, new (GC) StringObject(value));
}
void __qmljs_set_property(Context *ctx, Value *object, String *name, Value *value)
{
object->objectValue->put(name, *value, /*flags*/ 0);
}
void __qmljs_set_property_number(Context *ctx, Value *object, String *name, double number)
{
Value value;
__qmljs_init_number(ctx, &value, number);
object->objectValue->put(name, value, /*flag*/ 0);
}
void __qmljs_set_property_string(Context *ctx, Value *object, String *name, String *s)
{
Value value;
__qmljs_init_string(ctx, &value, s);
object->objectValue->put(name, value, /*flag*/ 0);
}
void __qmljs_set_activation_property(Context *ctx, String *name, Value *value)
{
__qmljs_set_property(ctx, &ctx->activation, name, value);
}
void __qmljs_set_activation_property_number(Context *ctx, String *name, double value)
{
__qmljs_set_property_number(ctx, &ctx->activation, name, value);
}
void __qmljs_set_activation_property_string(Context *ctx, String *name, String *value)
{
__qmljs_set_property_string(ctx, &ctx->activation, name, value);
}
void __qmljs_get_property(Context *ctx, Value *result, Value *object, String *name)
{
Q_ASSERT(object->type == OBJECT_TYPE);
object->objectValue->get(name, result);
}
void __qmljs_get_activation_property(Context *ctx, Value *result, String *name)
{
__qmljs_get_property(ctx, result, &ctx->activation, name);
}
void __qmljs_get_activation(Context *ctx, Value *result)
{
*result = ctx->activation;
}
void __qmljs_get_thisObject(Context *ctx, Value *result)
{
*result = ctx->thisObject;
}
void __qmljs_compare(Context *ctx, Value *result, const Value *x, const Value *y, bool leftFirst)
{
Value px, py;
if (leftFirst) {
__qmljs_to_primitive(ctx, &px, x, NUMBER_HINT);
__qmljs_to_primitive(ctx, &py, y, NUMBER_HINT);
} else {
__qmljs_to_primitive(ctx, &py, x, NUMBER_HINT);
__qmljs_to_primitive(ctx, &px, y, NUMBER_HINT);
}
if (px.type == STRING_TYPE && py.type == STRING_TYPE) {
bool r = __qmljs_string_compare(ctx, px.stringValue, py.stringValue);
__qmljs_init_boolean(ctx, result, r);
} else {
double nx = __qmljs_to_number(ctx, &px);
double ny = __qmljs_to_number(ctx, &py);
if (isnan(nx) || isnan(ny)) {
__qmljs_init_undefined(ctx, result);
} else {
const int sx = signbit(nx);
const int sy = signbit(ny);
const bool ix = isinf(nx);
const bool iy = isinf(ny);
bool r = false;
if (ix && !sx) {
r = false;
} else if (iy && !sy) {
r = true;
} else if (iy && sy) {
r = false;
} else if (ix && sx) {
r = true;
} else if (nx == ny) {
r = false;
} else {
r = nx < ny;
}
__qmljs_init_boolean(ctx, result, r);
}
}
}
bool __qmljs_equal(Context *ctx, const Value *x, const Value *y)
{
if (x->type == y->type) {
switch ((ValueType) x->type) {
case UNDEFINED_TYPE:
return true;
case NULL_TYPE:
return true;
case BOOLEAN_TYPE:
return x->booleanValue == y->booleanValue;
break;
case NUMBER_TYPE:
return x->numberValue == y->numberValue;
case STRING_TYPE:
return __qmljs_string_equal(ctx, x->stringValue, y->stringValue);
case OBJECT_TYPE:
return x->objectValue == y->objectValue;
}
// unreachable
} else {
if (x->type == NULL_TYPE && y->type == UNDEFINED_TYPE) {
return true;
} else if (x->type == UNDEFINED_TYPE && y->type == NULL_TYPE) {
return true;
} else if (x->type == NUMBER_TYPE && y->type == STRING_TYPE) {
Value ny;
__qmljs_init_number(ctx, &ny, __qmljs_to_number(ctx, y));
return __qmljs_equal(ctx, x, &ny);
} else if (x->type == STRING_TYPE && y->type == NUMBER_TYPE) {
Value nx;
__qmljs_init_number(ctx, &nx, __qmljs_to_number(ctx, x));
return __qmljs_equal(ctx, &nx, y);
} else if (x->type == BOOLEAN_TYPE) {
Value nx;
__qmljs_init_number(ctx, &nx, (double) x->booleanValue);
return __qmljs_equal(ctx, &nx, y);
} else if (y->type == BOOLEAN_TYPE) {
Value ny;
__qmljs_init_number(ctx, &ny, (double) y->booleanValue);
return __qmljs_equal(ctx, x, &ny);
} else if ((x->type == NUMBER_TYPE || x->type == STRING_TYPE) && y->type == OBJECT_TYPE) {
Value py;
__qmljs_to_primitive(ctx, &py, y, PREFERREDTYPE_HINT);
return __qmljs_equal(ctx, x, &py);
} else if (x->type == OBJECT_TYPE && (y->type == NUMBER_TYPE || y->type == STRING_TYPE)) {
Value px;
__qmljs_to_primitive(ctx, &px, x, PREFERREDTYPE_HINT);
return __qmljs_equal(ctx, &px, y);
}
}
return false;
}
void __qmljs_call(Context *ctx, Value *result, const Value *function,
const Value *thisObject, const Value *arguments, int argc)
{
if (function->type != OBJECT_TYPE) {
__qmljs_throw_type_error(ctx, result);
} else if (FunctionObject *f = function->objectValue->asFunctionObject()) {
*result = f->call(*thisObject, arguments, argc);
} else {
__qmljs_throw_type_error(ctx, result);
}
}
void __qmjs_construct(Context *ctx, Value *result, const Value *function, const Value *arguments, int argc)
{
if (function->type != OBJECT_TYPE) {
__qmljs_throw_type_error(ctx, result);
} else if (FunctionObject *f = function->objectValue->asFunctionObject()) {
*result = f->construct(arguments, argc);
} else {
__qmljs_throw_type_error(ctx, result);
}
}
} // extern "C"
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