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Desugar destructuring via builtin

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Joscha 2022-11-18 18:28:06 +01:00
parent 64c9ca08d9
commit 53928bdeb5
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45
README.md
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@ -84,42 +84,23 @@ In the following sections,
### Table destructuring
`{ a, b, foo: c } = d` is converted to
`{ foo, bar: baz } = a` is converted to
```
'{
local expr = 'arg()[0],
local scope = 'arg()[1],
scope.a = expr[0],
scope.b = expr[1],
scope.c = expr.foo,
}{d, 'scope()}
```
which is approximately equal to
```
(function{expr, scope} '{
scope.a = expr[0],
scope.b = expr[1],
scope.c = expr.foo,
}){d, 'scope()}
'destructure{
'scope(),
{ "foo", bar: "baz" },
a,
}
```
`local { a, b, foo: c } = d` is converted to
`local { foo, bar: baz } = a` is converted to
```
'{
local expr = 'arg()[0],
local scope = 'arg()[1],
'setraw(scope, "a", expr[0]),
'setraw(scope, "b", expr[1]),
'setraw(scope, "c", expr.foo),
}{d, 'scope()}
```
which is approximately equal to
```
(function{expr, scope} '{
'setraw(scope, "a", expr[0]),
'setraw(scope, "b", expr[1]),
'setraw(scope, "c", expr.foo),
}){d, 'scope()}
'destructure{
'scope(),
{ "foo", bar: "baz" },
a,
local: true,
}
```
### Function definitions