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Contents
# frozen_string_literal: true
module Hanami
class View
module ERB
module Filters
# Implicitly captures and outputs the content inside blocks opened in ERB expression tags,
# such as `<%= form_for(:post) do %>`.
#
# Inspired by Slim's Slim::Controls::Filter#on_slim_output.
#
# @since 2.1.0
# @api private
class Block < Temple::Filter
END_LINE_RE = /\bend\b/
def on_erb_block(escape, code, content)
tmp = unique_name
# Remove the last `end` :code sexp, since this is technically "outside" the block
# contents, which we want to capture separately below. This `end` is added back after
# capturing the content below.
case content.last
in [:code, c] if c =~ END_LINE_RE
content.pop
end
[:multi,
# Capture the result of the code in a variable. We can't do `[:dynamic, code]` because
# it's probably not a complete expression (which is a requirement for Temple).
[:code, "#{tmp} = #{code}"],
# Capture the content of a block in a separate buffer. This means that `yield` will
# not output the content to the current buffer, but rather return the output.
[:capture, unique_name, compile(content)],
[:code, "end"],
# Output the content.
[:escape, escape, [:dynamic, tmp]]
]
end
end
end
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems