From 511c4e0bfccd4aa3d6d4ec256b443df787470baf Mon Sep 17 00:00:00 2001
From: Sigurd Meldgaard <sigurdm@google.com>
Date: Tue, 4 Nov 2025 19:17:10 +0100
Subject: [PATCH] Remove dead code from snippet_generator (#174440)

Randomly stumbled on code that seems to no longer have clients.
---
 dev/snippets/lib/src/snippet_generator.dart | 98 ---------------------
 1 file changed, 98 deletions(-)

diff --git a/dev/snippets/lib/src/snippet_generator.dart b/dev/snippets/lib/src/snippet_generator.dart
index 4bb64f9e266..b432261375c 100644
--- a/dev/snippets/lib/src/snippet_generator.dart
+++ b/dev/snippets/lib/src/snippet_generator.dart
@@ -92,104 +92,6 @@ class SnippetGenerator {
     });
   }
 
-  /// Consolidates all of the snippets and the assumptions into one snippet, in
-  /// order to create a compilable result.
-  Iterable<SourceLine> consolidateSnippets(List<CodeSample> samples, {bool addMarkers = false}) {
-    if (samples.isEmpty) {
-      return <SourceLine>[];
-    }
-    final Iterable<SnippetSample> snippets = samples.whereType<SnippetSample>();
-    final List<SourceLine> snippetLines = <SourceLine>[...snippets.first.assumptions];
-    for (final SnippetSample sample in snippets) {
-      parseInput(sample);
-      snippetLines.addAll(_processBlocks(sample));
-    }
-    return snippetLines;
-  }
-
-  /// A RegExp that matches a Dart constructor.
-  static final RegExp _constructorRegExp = RegExp(r'(const\s+)?_*[A-Z][a-zA-Z0-9<>._]*\(');
-
-  /// A serial number so that we can create unique expression names when we
-  /// generate them.
-  int _expressionId = 0;
-
-  List<SourceLine> _surround(String prefix, Iterable<SourceLine> body, String suffix) {
-    return <SourceLine>[
-      if (prefix.isNotEmpty) SourceLine(prefix),
-      ...body,
-      if (suffix.isNotEmpty) SourceLine(suffix),
-    ];
-  }
-
-  /// Process one block of sample code (the part inside of "```" markers).
-  /// Splits any sections denoted by "// ..." into separate blocks to be
-  /// processed separately. Uses a primitive heuristic to make sample blocks
-  /// into valid Dart code.
-  List<SourceLine> _processBlocks(CodeSample sample) {
-    final List<SourceLine> block = sample.parts
-        .expand<SourceLine>((SkeletonInjection injection) => injection.contents)
-        .toList();
-    if (block.isEmpty) {
-      return <SourceLine>[];
-    }
-    return _processBlock(block);
-  }
-
-  List<SourceLine> _processBlock(List<SourceLine> block) {
-    final String firstLine = block.first.text;
-    if (firstLine.startsWith('new ') || firstLine.startsWith(_constructorRegExp)) {
-      _expressionId += 1;
-      return _surround('dynamic expression$_expressionId = ', block, ';');
-    } else if (firstLine.startsWith('await ')) {
-      _expressionId += 1;
-      return _surround('Future<void> expression$_expressionId() async { ', block, ' }');
-    } else if (block.first.text.startsWith('class ') || block.first.text.startsWith('enum ')) {
-      return block;
-    } else if ((block.first.text.startsWith('_') || block.first.text.startsWith('final ')) &&
-        block.first.text.contains(' = ')) {
-      _expressionId += 1;
-      return _surround('void expression$_expressionId() { ', block.toList(), ' }');
-    } else {
-      final List<SourceLine> buffer = <SourceLine>[];
-      int blocks = 0;
-      SourceLine? subLine;
-      final List<SourceLine> subsections = <SourceLine>[];
-      for (int index = 0; index < block.length; index += 1) {
-        // Each section of the dart code that is either split by a blank line, or with
-        // '// ...' is treated as a separate code block.
-        if (block[index].text.trim().isEmpty || block[index].text == '// ...') {
-          if (subLine == null) {
-            continue;
-          }
-          blocks += 1;
-          subsections.addAll(_processBlock(buffer));
-          buffer.clear();
-          assert(buffer.isEmpty);
-          subLine = null;
-        } else if (block[index].text.startsWith('// ')) {
-          if (buffer.length > 1) {
-            // don't include leading comments
-            // so that it doesn't start with "// " and get caught in this again
-            buffer.add(SourceLine('/${block[index].text}'));
-          }
-        } else {
-          subLine ??= block[index];
-          buffer.add(block[index]);
-        }
-      }
-      if (blocks > 0) {
-        if (subLine != null) {
-          subsections.addAll(_processBlock(buffer));
-        }
-        // Combine all of the subsections into one section, now that they've been processed.
-        return subsections;
-      } else {
-        return block;
-      }
-    }
-  }
-
   /// Parses the input for the various code and description segments, and
   /// returns a set of skeleton injections in the order found.
   List<SkeletonInjection> parseInput(CodeSample sample) {