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LibJS: Split Function into subclasses NativeFunction and ScriptFunction

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Both types of functions are now Function and implement calling via:

    virtual Value call(Interpreter&, Vector<Value> arguments);

This removes the need for CallExpression::execute() to care about which
kind of function it's calling. :^)
This commit is contained in:
Andreas Kling 2020-03-13 10:08:52 +01:00
parent de6f697eba
commit d9c7009604
9 changed files with 133 additions and 42 deletions
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56
Libraries/LibJS/ScriptFunction.cpp Normal file
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/*
* Copyright (c) 2020, Stephan Unverwerth <s.unverwerth@gmx.de>
* 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 <LibJS/Interpreter.h>
#include <LibJS/ScriptFunction.h>
#include <LibJS/Value.h>
namespace JS {
ScriptFunction::ScriptFunction(const ScopeNode& body, Vector<String> parameters)
: m_body(body)
, m_parameters(move(parameters))
{
}
ScriptFunction::~ScriptFunction()
{
}
Value ScriptFunction::call(Interpreter& interpreter, Vector<Value> argument_values)
{
Vector<Argument> arguments;
for (size_t i = 0; i < m_parameters.size(); ++i) {
auto name = parameters()[i];
auto value = js_undefined();
if (i < argument_values.size())
value = argument_values[i];
arguments.append({ move(name), move(value) });
}
return interpreter.run(m_body, move(arguments), ScopeType::Function);
}
}