mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-09-21 18:37:58 +03:00
542108421e
The above snippet is a MemberExpression that necessitates the implicit construction of a StringObject wrapper around a PrimitiveString. We then do a property lookup (a "get") on the StringObject, where we find the "length" property. This is pretty neat! :^)
139 lines
4.4 KiB
C++
139 lines
4.4 KiB
C++
/*
|
|
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <AK/NonnullOwnPtr.h>
|
|
#include <LibJS/AST.h>
|
|
#include <LibJS/Interpreter.h>
|
|
#include <LibJS/Object.h>
|
|
#include <LibJS/PrimitiveString.h>
|
|
#include <LibJS/Value.h>
|
|
#include <stdio.h>
|
|
|
|
#define PROGRAM 4
|
|
|
|
static void build_program(JS::Program&, JS::Heap&);
|
|
|
|
int main()
|
|
{
|
|
JS::Interpreter interpreter;
|
|
|
|
auto program = make<JS::Program>();
|
|
build_program(*program, interpreter.heap());
|
|
program->dump(0);
|
|
|
|
auto result = interpreter.run(*program);
|
|
dbg() << "Interpreter returned " << result;
|
|
|
|
printf("%s\n", result.to_string().characters());
|
|
|
|
dbg() << "Collecting garbage on exit...";
|
|
interpreter.heap().collect_garbage();
|
|
return 0;
|
|
}
|
|
|
|
#if PROGRAM == 1
|
|
void build_program(JS::Program& program)
|
|
{
|
|
// function foo() { return (1 + 2) + 3; }
|
|
// foo();
|
|
|
|
auto block = make<JS::BlockStatement>();
|
|
block->append<JS::ReturnStatement>(
|
|
make<JS::BinaryExpression>(
|
|
JS::BinaryOp::Plus,
|
|
make<JS::BinaryExpression>(
|
|
JS::BinaryOp::Plus,
|
|
make<JS::Literal>(JS::Value(1)),
|
|
make<JS::Literal>(JS::Value(2))),
|
|
make<JS::Literal>(JS::Value(3))));
|
|
|
|
program.append<JS::FunctionDeclaration>("foo", move(block));
|
|
program.append<JS::CallExpression>("foo");
|
|
}
|
|
#elif PROGRAM == 2
|
|
void build_program(JS::Program& program)
|
|
{
|
|
// c = 1;
|
|
// function foo() {
|
|
// var a = 5;
|
|
// var b = 7;
|
|
// return a + b + c;
|
|
// }
|
|
// foo();
|
|
|
|
program.append<JS::AssignmentExpression>(
|
|
JS::AssignmentOp::Assign,
|
|
make<JS::Identifier>("c"),
|
|
make<JS::Literal>(JS::Value(1)));
|
|
|
|
auto block = make<JS::BlockStatement>();
|
|
block->append<JS::VariableDeclaration>(
|
|
make<JS::Identifier>("a"),
|
|
make<JS::Literal>(JS::Value(5)));
|
|
block->append<JS::VariableDeclaration>(
|
|
make<JS::Identifier>("b"),
|
|
make<JS::Literal>(JS::Value(7)));
|
|
|
|
block->append<JS::ReturnStatement>(
|
|
make<JS::BinaryExpression>(
|
|
JS::BinaryOp::Plus,
|
|
make<JS::BinaryExpression>(
|
|
JS::BinaryOp::Plus,
|
|
make<JS::Identifier>("a"),
|
|
make<JS::Identifier>("b")),
|
|
make<JS::Identifier>("c")));
|
|
program.append<JS::FunctionDeclaration>("foo", move(block));
|
|
program.append<JS::CallExpression>("foo");
|
|
}
|
|
#elif PROGRAM == 3
|
|
void build_program(JS::Program& program)
|
|
{
|
|
// function foo() {
|
|
// var x = {};
|
|
// $gc();
|
|
// }
|
|
// foo();
|
|
|
|
auto block = make<JS::BlockStatement>();
|
|
block->append<JS::VariableDeclaration>(
|
|
make<JS::Identifier>("x"),
|
|
make<JS::ObjectExpression>());
|
|
block->append<JS::CallExpression>("$gc");
|
|
|
|
program.append<JS::FunctionDeclaration>("foo", move(block));
|
|
program.append<JS::CallExpression>("foo");
|
|
}
|
|
#elif PROGRAM == 4
|
|
void build_program(JS::Program& program, JS::Heap& heap)
|
|
{
|
|
// "hello friends".length
|
|
|
|
program.append<JS::MemberExpression>(
|
|
make<JS::Literal>(JS::Value(js_string(heap, "hello friends"))),
|
|
make<JS::Identifier>("length"));
|
|
}
|
|
#endif
|