diff options
Diffstat (limited to 'actionpack/lib/action_view/template/error.rb')
-rw-r--r-- | actionpack/lib/action_view/template/error.rb | 156 |
1 files changed, 80 insertions, 76 deletions
diff --git a/actionpack/lib/action_view/template/error.rb b/actionpack/lib/action_view/template/error.rb index aa21606f76..648f708d3d 100644 --- a/actionpack/lib/action_view/template/error.rb +++ b/actionpack/lib/action_view/template/error.rb @@ -1,101 +1,105 @@ require "active_support/core_ext/enumerable" module ActionView - # The TemplateError exception is raised when the compilation of the template fails. This exception then gathers a - # bunch of intimate details and uses it to report a very precise exception message. - class TemplateError < ActionViewError #:nodoc: - SOURCE_CODE_RADIUS = 3 + class Template + # The Template::Error exception is raised when the compilation of the template fails. This exception then gathers a + # bunch of intimate details and uses it to report a very precise exception message. + class Error < ActionViewError #:nodoc: + SOURCE_CODE_RADIUS = 3 - attr_reader :original_exception + attr_reader :original_exception - def initialize(template, assigns, original_exception) - @template, @assigns, @original_exception = template, assigns.dup, original_exception - @backtrace = compute_backtrace - end + def initialize(template, assigns, original_exception) + @template, @assigns, @original_exception = template, assigns.dup, original_exception + @backtrace = compute_backtrace + end - def file_name - @template.identifier - end + def file_name + @template.identifier + end - def message - ActiveSupport::Deprecation.silence { original_exception.message } - end + def message + ActiveSupport::Deprecation.silence { original_exception.message } + end - def clean_backtrace - if defined?(Rails) && Rails.respond_to?(:backtrace_cleaner) - Rails.backtrace_cleaner.clean(original_exception.backtrace) - else - original_exception.backtrace + def clean_backtrace + if defined?(Rails) && Rails.respond_to?(:backtrace_cleaner) + Rails.backtrace_cleaner.clean(original_exception.backtrace) + else + original_exception.backtrace + end end - end - def sub_template_message - if @sub_templates - "Trace of template inclusion: " + - @sub_templates.collect { |template| template.inspect }.join(", ") - else - "" + def sub_template_message + if @sub_templates + "Trace of template inclusion: " + + @sub_templates.collect { |template| template.inspect }.join(", ") + else + "" + end end - end - def source_extract(indentation = 0) - return unless num = line_number - num = num.to_i + def source_extract(indentation = 0) + return unless num = line_number + num = num.to_i - source_code = @template.source.split("\n") + source_code = @template.source.split("\n") - start_on_line = [ num - SOURCE_CODE_RADIUS - 1, 0 ].max - end_on_line = [ num + SOURCE_CODE_RADIUS - 1, source_code.length].min + start_on_line = [ num - SOURCE_CODE_RADIUS - 1, 0 ].max + end_on_line = [ num + SOURCE_CODE_RADIUS - 1, source_code.length].min - indent = ' ' * indentation - line_counter = start_on_line - return unless source_code = source_code[start_on_line..end_on_line] + indent = ' ' * indentation + line_counter = start_on_line + return unless source_code = source_code[start_on_line..end_on_line] - source_code.sum do |line| - line_counter += 1 - "#{indent}#{line_counter}: #{line}\n" + source_code.sum do |line| + line_counter += 1 + "#{indent}#{line_counter}: #{line}\n" + end end - end - - def sub_template_of(template_path) - @sub_templates ||= [] - @sub_templates << template_path - end - - def line_number - @line_number ||= - if file_name - regexp = /#{Regexp.escape File.basename(file_name)}:(\d+)/ - $1 if message =~ regexp or clean_backtrace.find { |line| line =~ regexp } - end - end + def sub_template_of(template_path) + @sub_templates ||= [] + @sub_templates << template_path + end - def to_s - "\n#{self.class} (#{message}) #{source_location}:\n" + - "#{source_extract}\n #{clean_backtrace.join("\n ")}\n\n" - end + def line_number + @line_number ||= + if file_name + regexp = /#{Regexp.escape File.basename(file_name)}:(\d+)/ - # don't do anything nontrivial here. Any raised exception from here becomes fatal - # (and can't be rescued). - def backtrace - @backtrace - end + $1 if message =~ regexp or clean_backtrace.find { |line| line =~ regexp } + end + end - private - def compute_backtrace - [ - "#{source_location.capitalize}\n\n#{source_extract(4)}\n " + - clean_backtrace.join("\n ") - ] + def to_s + "\n#{self.class} (#{message}) #{source_location}:\n" + + "#{source_extract}\n #{clean_backtrace.join("\n ")}\n\n" end - def source_location - if line_number - "on line ##{line_number} of " - else - 'in ' - end + file_name + # don't do anything nontrivial here. Any raised exception from here becomes fatal + # (and can't be rescued). + def backtrace + @backtrace end + + private + def compute_backtrace + [ + "#{source_location.capitalize}\n\n#{source_extract(4)}\n " + + clean_backtrace.join("\n ") + ] + end + + def source_location + if line_number + "on line ##{line_number} of " + else + 'in ' + end + file_name + end + end end -end
\ No newline at end of file + + TemplateError = Template::Error +end |