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LibJS: Very basic support for "new" construction in bytecode VM
This patch adds a CallType to the Bytecode::Op::Call instruction, which can be either Call or Construct. We then generate Construct calls for the NewExpression AST node. When executed, these get fed into VM::construct().
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3 changed files with 23 additions and 5 deletions
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@ -325,10 +325,16 @@ public:
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// NOTE: This instruction is variable-width depending on the number of arguments!
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class Call final : public Instruction {
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public:
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Call(Register callee, Register this_value, Vector<Register> const& arguments)
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enum class CallType {
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Call,
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Construct,
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};
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Call(CallType type, Register callee, Register this_value, Vector<Register> const& arguments)
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: Instruction(Type::Call)
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, m_callee(callee)
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, m_this_value(this_value)
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, m_type(type)
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, m_argument_count(arguments.size())
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{
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for (size_t i = 0; i < m_argument_count; ++i)
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@ -343,6 +349,7 @@ public:
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private:
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Register m_callee;
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Register m_this_value;
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CallType m_type;
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size_t m_argument_count { 0 };
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Register m_arguments[];
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};
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