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improve function api

This commit is contained in:
Dmitriy Pleshevskiy 2024-04-20 17:36:34 +03:00
parent 4d3872b704
commit f3796d29b4
Signed by: pleshevskiy
GPG Key ID: 17041163DA10A9A2
2 changed files with 17 additions and 9 deletions
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20
lib.nix
View File

@ -75,8 +75,8 @@ let
call = fnName: args: call = fnName: args:
concat [ (validFuncName fnName) (wrapParen (join ", " args)) ]; concat [ (validFuncName fnName) (wrapParen (join ", " args)) ];
call0 = call [ ]; call0 = fnName: call fnName [ ];
call1 = arg: call [ arg ]; call1 = fnName: arg: call fnName [ arg ];
require = name: call1 "require" name; require = name: call1 "require" name;
kw_and = raw "and"; kw_and = raw "and";
@ -119,20 +119,24 @@ let
local = expr: spaceBetween [ kw_local expr ]; local = expr: spaceBetween [ kw_local expr ];
set = variable: value: join " = " [ (raw variable) value ]; set = variable: value: join " = " [ (raw variable) value ];
func' = fnName: params: body: func = fnName: params: body:
(spaceBetween let
f =
if isList body then concatLines
else if isAttrs body then spaceBetween
else error "Value ${toString body} is not a valid function body";
in
(f
([ ([
(concat [ (concat [
(spaceBetween [ kw_function (validFuncName fnName) ]) (spaceBetween [ kw_function (validFuncName fnName) ])
(wrapParen (join ", " (map raw params))) (wrapParen (join ", " (map raw params)))
]) ])
] ]
++ body ++ (if isList body then body else if isAttrs body then [ body ] else [ ])
++ [ kw_end ]) ++ [ kw_end ])
); );
func = fnName: params: body: lambda = func "";
func' fnName params (concatLines body);
lambda = func' "";
lambda0 = lambda [ ]; lambda0 = lambda [ ];
return = expr: spaceBetween ([ kw_return expr ]); return = expr: spaceBetween ([ kw_return expr ]);

6
lib.test.nix
View File

@ -168,7 +168,7 @@ with nix2lua; pkgs.lib.runTests {
); );
expected = "name = ((a >= 1) and (a <= 10))"; expected = "name = ((a >= 1) and (a <= 10))";
}; };
"test returns defined function" = { "test returns defined multiline function" = {
expr = toLua (func "hello" [ "a" "b" ] [ expr = toLua (func "hello" [ "a" "b" ] [
(eq (mul (add (var "a") 2) (sub 2 1)) 3) (eq (mul (add (var "a") 2) (sub 2 1)) 3)
(not (eq (mul (add (var "b") 2) (sub 2 1)) 3)) (not (eq (mul (add (var "b") 2) (sub 2 1)) 3))
@ -184,6 +184,10 @@ with nix2lua; pkgs.lib.runTests {
end end
''; '';
}; };
"test returns defined singleline function" = {
expr = toLua (func "hello" [ "a" ] (call1 "h.world" (var "a")));
expected = "function hello(a) h.world(a) end";
};
"test returns if statement" = { "test returns if statement" = {
expr = toLua (if' (eq 10 10) [ expr = toLua (if' (eq 10 10) [
(call "print" [ 10 ]) (call "print" [ 10 ])