Skip to content

Emit pass for empty blocks in generated Python #22

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
mikebarkmin merged 1 commit into from
Sep 28, 2026
Merged

Emit pass for empty blocks in generated Python #22

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
29 changes: 19 additions & 10 deletions packages/struktolab/src/common/code-generator.js
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -134,6 +134,12 @@ export function generateCode(tree, lang = "python") {
return transform(tree, 0, t, lang.toLowerCase()).join("");
}

function body(node, level, t, lang) {
const lines = transform(node, level, t, lang);
if (lines.length === 0 && lang === "python") return [indent(level) + "pass\n"];
return lines;
}

function transform(node, level, t, lang) {
if (!node) return [];
if (node.type === "InsertNode" || node.type === "Placeholder") {
Expand Down Expand Up @@ -164,9 +170,12 @@ function transform(node, level, t, lang) {
t.BranchNode.post +
(t.leftBracket ? " " + t.leftBracket + "\n" : ""),
);
lines.push(...transform(node.trueChild, level + 1, t, lang));
lines.push(indent(level) + t.BranchNode.between);
lines.push(...transform(node.falseChild, level + 1, t, lang));
lines.push(...body(node.trueChild, level + 1, t, lang));
const falseLines = transform(node.falseChild, level + 1, t, lang);
if (falseLines.length > 0 || lang !== "python") {
lines.push(indent(level) + t.BranchNode.between);
lines.push(...falseLines);
}
if (t.rightBracket) lines.push(indent(level) + t.rightBracket + "\n");
break;
}
Expand All @@ -179,7 +188,7 @@ function transform(node, level, t, lang) {
t.HeadLoopNode.post +
(t.leftBracket ? " " + t.leftBracket + "\n" : ""),
);
lines.push(...transform(node.child, level + 1, t, lang));
lines.push(...body(node.child, level + 1, t, lang));
if (t.rightBracket) lines.push(indent(level) + t.rightBracket + "\n");
break;

Expand All @@ -191,7 +200,7 @@ function transform(node, level, t, lang) {
t.CountLoopNode.post +
(t.leftBracket ? " " + t.leftBracket + "\n" : ""),
);
lines.push(...transform(node.child, level + 1, t, lang));
lines.push(...body(node.child, level + 1, t, lang));
if (t.rightBracket) lines.push(indent(level) + t.rightBracket + "\n");
break;

Expand Down Expand Up @@ -226,7 +235,7 @@ function transform(node, level, t, lang) {
t.FunctionNode.post +
(t.leftBracket ? " " + t.leftBracket + "\n" : ""),
);
lines.push(...transform(node.child, level + 1, t, lang));
lines.push(...body(node.child, level + 1, t, lang));
if (t.rightBracket) lines.push(indent(level) + t.rightBracket + "\n");
break;
}
Expand All @@ -237,7 +246,7 @@ function transform(node, level, t, lang) {
t.TryCatchNode.pre +
(t.leftBracket ? " " + t.leftBracket + "\n" : ""),
);
lines.push(...transform(node.tryChild, level + 1, t, lang));
lines.push(...body(node.tryChild, level + 1, t, lang));
lines.push(
indent(level) +
(t.rightBracket ? t.rightBracket + " " : "") +
Expand All @@ -246,7 +255,7 @@ function transform(node, level, t, lang) {
t.TryCatchNode.post +
(t.leftBracket ? " " + t.leftBracket + "\n" : ""),
);
lines.push(...transform(node.catchChild, level + 1, t, lang));
lines.push(...body(node.catchChild, level + 1, t, lang));
if (t.rightBracket) lines.push(indent(level) + t.rightBracket + "\n");
break;
}
Expand All @@ -266,7 +275,7 @@ function transform(node, level, t, lang) {
c.text +
t.InsertCase.post,
);
lines.push(...transform(c.followElement, level + 1, t, lang));
lines.push(...body(c.followElement, level + 1, t, lang));
first = false;
}
}
Expand All @@ -275,7 +284,7 @@ function transform(node, level, t, lang) {
indent(level) + t.InsertCase.preDefault + t.InsertCase.post,
);
lines.push(
...transform(node.defaultNode.followElement, level + 1, t, lang),
...body(node.defaultNode.followElement, level + 1, t, lang),
);
}
} else {
Expand Down
Loading