perf: add fast string pre-checks to skip unnecessary parsing

lib/erb_lint/linters/allowed_script_type.rb

@@ -23,9 +23,12 @@ class ConfigSchema < LinterConfig
       def run(processed_source)
         parser = processed_source.parser
         parser.nodes_with_type(:tag).each do |tag_node|
+          # Fast path: check tag name from AST node directly before creating Tag object
+          tag_name_node = tag_node.to_a[1]
+          next unless tag_name_node&.loc&.source == "script"
+
           tag = BetterHtml::Tree::Tag.from_node(tag_node)
           next if tag.closing?
-          next unless tag.name == "script"
 
           if @config.disallow_inline_scripts?
             name_node = tag_node.to_a[1]

lib/erb_lint/linters/no_javascript_tag_helper.rb

@@ -25,6 +25,9 @@ def run(processed_source)
 
           source = code_node.loc.source
 
+          # Fast path: skip expensive parsing if source can't contain the target method
+          next unless source.include?("javascript_tag")
+
           ruby_node =
             begin
               BetterHtml::TestHelper::RubyNode.parse(source)

lib/erb_lint/linters/require_input_autocomplete.rb

@@ -52,6 +52,10 @@ def run(processed_source)
 
       def find_html_input_tags(parser)
         parser.nodes_with_type(:tag).each do |tag_node|
+          # Fast path: check tag name from AST node directly before creating Tag object
+          tag_name_node = tag_node.to_a[1]
+          next unless tag_name_node&.loc&.source == "input"
+
           tag = BetterHtml::Tree::Tag.from_node(tag_node)
 
           autocomplete_attribute = tag.attributes["autocomplete"]
@@ -82,10 +86,16 @@ def html_type_requires_autocomplete_attribute?(type_attribute)
         type_present && HTML_INPUT_TYPES_REQUIRING_AUTOCOMPLETE.include?(type_attribute.value)
       end
 
+      FORM_HELPER_NAMES_PATTERN = Regexp.union(FORM_HELPERS_REQUIRING_AUTOCOMPLETE.map(&:to_s)).freeze
+
       def find_rails_helper_input_tags(parser)
         parser.ast.descendants(:erb).each do |erb_node|
           indicator_node, _, code_node, _ = *erb_node
           source = code_node.loc.source
+
+          # Fast path: skip expensive parsing if source can't contain any form helper name
+          next unless source.match?(FORM_HELPER_NAMES_PATTERN)
+
           ruby_node = extract_ruby_node(source)
           send_node = ruby_node&.descendants(:send)&.first
 

lib/erb_lint/linters/require_script_nonce.rb

@@ -21,6 +21,10 @@ def run(processed_source)
 
       def find_html_script_tags(parser)
         parser.nodes_with_type(:tag).each do |tag_node|
+          # Fast path: check tag name from AST node directly before creating Tag object
+          tag_name_node = tag_node.to_a[1]
+          next unless tag_name_node&.loc&.source == "script"
+
           tag = BetterHtml::Tree::Tag.from_node(tag_node)
           nonce_attribute = tag.attributes["nonce"]
 
@@ -52,10 +56,16 @@ def html_javascript_type_attribute?(tag)
           type_attribute.value_node.to_a[1] != "application/javascript"
       end
 
+      TAG_HELPER_PATTERN = /javascript_tag|javascript_include_tag|javascript_pack_tag/
+
       def find_rails_helper_script_tags(parser)
         parser.ast.descendants(:erb).each do |erb_node|
           indicator_node, _, code_node, _ = *erb_node
           source = code_node.loc.source
+
+          # Fast path: skip expensive parsing if source can't contain any tag helper name
+          next unless source.match?(TAG_HELPER_PATTERN)
+
           ruby_node = extract_ruby_node(source)
           send_node = ruby_node&.descendants(:send)&.first