Check no break lines in blocks

Author: Maksim Sadym

scripts/formatter/no_split_var.js

@@ -0,0 +1,31 @@
+#!/usr/bin/env node
+
+const fs = require('fs')
+const path = require('path')
+const specPath = path.resolve(__dirname, '..', '..', 'index.bs')
+const specLines = fs.readFileSync(specPath, 'utf-8')
+    .toString()
+    .split('\n');
+
+let failed = [];
+const openClosePairs = [["[=", "=]"], ["<dfn", "</dfn"], ["<var", "</var"], ["[", "]"], ["<code", "</code"]];
+
+for (let i = 0; i < specLines.length; i++) {
+  const line = specLines[i];
+  for (let pair of openClosePairs) {
+    if (line.lastIndexOf(pair[0]) > line.lastIndexOf(pair[1])) {
+      failed.push(
+          `Unclosed ${line.substring(line.lastIndexOf(pair[0]))} at line ${i
+          + 1}`)
+    }
+  }
+
+  if ((line.split("|") - 1).length % 2) {
+    failed.push(
+        `Unclosed ${line.substring(line.lastIndexOf("|"))} at line ${i + 1}`)
+  }
+}
+
+if (failed.length > 0) {
+  throw new Error(`${failed.length} errors found:\n${failed.join("\n")}`);
+}

scripts/test.sh

@@ -19,3 +19,6 @@ $ROOT/scripts/cddl/generate.js
 
 cddl compile-cddl --cddl local.cddl
 cddl compile-cddl --cddl remote.cddl
+
+# Check break lines inside blocks.
+$ROOT/scripts/formatter/no_split_var.js