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fix tellyscript preprocessor

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This commit is contained in:
zefie
2025-08-14 02:55:15 -04:00
parent e8922bddfe
commit d5a4330b43
1 changed files with 16 additions and 6 deletions
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22
zefie_wtvp_minisrv/includes/classes/WTVTellyScript.js
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@@ -1081,6 +1081,8 @@ class WTVTellyScript {
// A stack to track whether the current block is active.
// Start with "true" so that top-level lines are output.
const stateStack = [true];
// Track the actual condition results (not combined with parent state)
const conditionStack = [true];
// Process each line one by one.
for (let i = 0; i < lines.length; i++) {
@@ -1090,21 +1092,23 @@ class WTVTellyScript {
if (line.startsWith("#")) {
if (/^#ifdef\b/.test(line)) {
// Get the label immediately after "#ifdef"
const token = line.slice(6).split(/\s/)[0];
const token = line.slice(6).trim().split(/\s/)[0];
const condition = !!definitions[token];
// The block is active only if the parent block is active and condition is true.
const active = stateStack[stateStack.length - 1] && condition;
stateStack.push(active);
conditionStack.push(condition);
continue; // Do not output this directive line.
} else if (/^#ifndef\b/.test(line)) {
const token = line.slice(7).split(/\s/)[0];
const token = line.slice(7).trim().split(/\s/)[0];
const condition = !definitions[token];
const active = stateStack[stateStack.length - 1] && condition;
stateStack.push(active);
conditionStack.push(condition);
continue;
} else if (/^#if\b/.test(line)) {
// Expect exactly "#if 1" or "#if 0" (no extra spaces allowed).
const token = line.slice(3).split(/\s/)[0];
const token = line.slice(3).trim().split(/\s/)[0];
if (token !== "1" && token !== "0") {
throw new Error(
`Invalid #if condition at line ${i + 1}: "${line}"`
@@ -1113,21 +1117,27 @@ class WTVTellyScript {
const condition = token === "1";
const active = stateStack[stateStack.length - 1] && condition;
stateStack.push(active);
conditionStack.push(condition);
continue;
} else if (/^#else\b/.test(line)) {
if (stateStack.length <= 1) {
throw new Error(`#else without matching #if at line ${i + 1}`);
}
// Flip the state of the current block while considering the parent's state.
const previous = stateStack.pop();
const newState = stateStack[stateStack.length - 1] && !previous;
// Pop the previous state and condition
stateStack.pop();
const previousCondition = conditionStack.pop();
// Flip the condition while considering the parent's state
const newCondition = !previousCondition;
const newState = stateStack[stateStack.length - 1] && newCondition;
stateStack.push(newState);
conditionStack.push(newCondition);
continue;
} else if (/^#endif\b/.test(line)) {
if (stateStack.length <= 1) {
throw new Error(`#endif without matching #if at line ${i + 1}`);
}
stateStack.pop();
conditionStack.pop();
continue;
} else if (/^#include\b/.test(line)) {
// Silently remove #include directives.