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awaitLet allow synchronous bindings. Close #68

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This commit is contained in:
Nat Quayle Nelson
2022-06-18 20:23:59 +00:00
parent fc431b164d
commit 5b4424fd96
2 changed files with 48 additions and 36 deletions
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62
kiss/src/kiss/Macros.hx
View File

@@ -699,48 +699,60 @@ class Macros {
macros["assertLet"] = ifLet.bind(true);
k.doc("awaitLet", 2, null, "(awaitLet [<promise bindings...>] <?catchHandler> <body...>)");
function awaitLet(wholeExp:ReaderExp, exps:Array<ReaderExp>, k:KissState) {
function awaitLet(rejectionHandler:ReaderExp->ReaderExp, wholeExp:ReaderExp, exps:Array<ReaderExp>, k:KissState) {
var bindingList = exps[0].bindingList("awaitLet");
var firstName = bindingList.shift();
var firstValue = bindingList.shift();
var b = wholeExp.expBuilder();
var firstNameStr = firstName.symbolNameValue();
var error = b.callSymbol("+", [b.str('awaitLet $firstNameStr rejected promise: '), b.symbol("reason")]);
var rejectionHandler = switch (exps[1].def) {
case CallExp({pos: _, def: Symbol("catch")}, args):
exps.splice(1,1);
b.callSymbol("lambda", args);
if (rejectionHandler == null) {
function error(firstName:ReaderExp) {
return b.callSymbol("+", [b.str('awaitLet ${firstName.symbolNameValue()} rejected promise: '), b.symbol("reason")]);
}
rejectionHandler = switch (exps[1].def) {
case CallExp({pos: _, def: Symbol("catch")}, args):
exps.splice(1,1);
(exp) -> b.callSymbol("lambda", args);
default:
(firstName) -> b.callSymbol("lambda", [
b.list([b.symbol("reason")]),
b.callSymbol("#when", [
b.symbol("vscode"),
b.callSymbol("Vscode.window.showErrorMessage", [error(firstName)]),
]),
// If running VSCode js, this throw will be a no-op but it makes the expression type-unify:
b.callSymbol("throw", [
error(firstName)
])
]);
}
}
var innerExp = if (bindingList.length == 0) {
b.begin(exps.slice(1));
} else {
awaitLet(rejectionHandler, wholeExp, [b.list(bindingList)].concat(exps.slice(1)), k);
};
switch(firstName.def) {
case MetaExp("sync", firstName):
return b.let([firstName, firstValue], [innerExp]);
case MetaExp(other, _):
throw KissError.fromExp(firstName, 'bad meta annotation &$other');
default:
b.callSymbol("lambda", [
b.list([b.symbol("reason")]),
b.callSymbol("#when", [
b.symbol("vscode"),
b.callSymbol("Vscode.window.showErrorMessage", [error]),
]),
// If running VSCode js, this throw will be a no-op but it makes the expression type-unify:
b.callSymbol("throw", [
error
])
]);
}
return b.call(b.field("then", firstValue), [
b.callSymbol("lambda", [
b.list([firstName]),
if (bindingList.length == 0) {
b.begin(exps.slice(1));
} else {
awaitLet(wholeExp, [b.list(bindingList)].concat(exps.slice(1)), k);
}
innerExp
]),
// Handle rejections:
rejectionHandler
rejectionHandler(firstName)
]);
}
macros["awaitLet"] = awaitLet;
macros["awaitLet"] = awaitLet.bind(null);
k.doc("whileLet", 2, null, "(whileLet [<bindings...>] <body...>)");
macros["whileLet"] = (wholeExp:ReaderExp, exps:Array<ReaderExp>, k:KissState) -> {

22
projects/kiss-vscode/src/commands/KissTools.kiss
View File

@@ -52,22 +52,22 @@ class ${className} {}
(showTextDocument (Uri.file (correspondingFile .fileName .document activeTextEditor))))
(function insertUTestCase [&opt _]
(awaitLet [testName (inputBox)]
(let [testName
"$(.toUpperCase (testName.substr 0 1))$(testName.substr 1)"]
(awaitLet [_ (insert
(awaitLet [testName (inputBox)
&sync testName
"$(.toUpperCase (testName.substr 0 1))$(testName.substr 1)"
_ (insert
"function test${testName}() {
_test${testName}();
}
")
_ (showTextDocument (Uri.file (correspondingFile .fileName .document activeTextEditor)))]
(let [pos (activeTextEditor.document.positionAt .length (activeTextEditor.document.getText))]
(awaitLet [_ (insertAt pos
_ (showTextDocument (Uri.file (correspondingFile .fileName .document activeTextEditor)))
&sync pos (activeTextEditor.document.positionAt .length (activeTextEditor.document.getText))
_ (insertAt pos
"
(function _test${testName} []
(Assert.pass))
")]
(let [endPos (activeTextEditor.document.positionAt .length (activeTextEditor.document.getText))]
(activeTextEditor.revealRange (new Range pos endPos))
(set activeTextEditor.selection (new Selection pos endPos)))))))))
")
&sync endPos (activeTextEditor.document.positionAt .length (activeTextEditor.document.getText))]
(activeTextEditor.revealRange (new Range pos endPos))
(set activeTextEditor.selection (new Selection pos endPos))))