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LibJS: Implement +=, -=, *=, and /= assignment operators

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This commit is contained in:
Conrad Pankoff 2020-03-12 23:09:15 +11:00 • committed by Andreas Kling
commit 2b36b4f09f
Notes: sideshowbarker 2024-07-19 08:45:04 +09:00
3 changed files with 48 additions and 0 deletions
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28
Libraries/LibJS/AST.cpp
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@ -383,6 +383,22 @@ Value AssignmentExpression::execute(Interpreter& interpreter) const
case AssignmentOp::Assign:
interpreter.set_variable(name, rhs_result);
break;
case AssignmentOp::PlusEquals:
rhs_result = add(m_lhs->execute(interpreter), rhs_result);
interpreter.set_variable(name, rhs_result);
break;
case AssignmentOp::MinusEquals:
rhs_result = sub(m_lhs->execute(interpreter), rhs_result);
interpreter.set_variable(name, rhs_result);
break;
case AssignmentOp::AsteriskEquals:
rhs_result = mul(m_lhs->execute(interpreter), rhs_result);
interpreter.set_variable(name, rhs_result);
break;
case AssignmentOp::SlashEquals:
rhs_result = div(m_lhs->execute(interpreter), rhs_result);
interpreter.set_variable(name, rhs_result);
break;
}
return rhs_result;
}
@ -394,6 +410,18 @@ void AssignmentExpression::dump(int indent) const
case AssignmentOp::Assign:
op_string = "=";
break;
case AssignmentOp::PlusEquals:
op_string = "+=";
break;
case AssignmentOp::MinusEquals:
op_string = "-=";
break;
case AssignmentOp::AsteriskEquals:
op_string = "*=";
break;
case AssignmentOp::SlashEquals:
op_string = "/=";
break;
}
ASTNode::dump(indent);