Sha256: e188e2f8b959ed44153c37cb460499df44f89e3e10c4620ecbcaf8e871876f62
Contents?: true
Size: 1.54 KB
Versions: 47
Compression:
Stored size: 1.54 KB
Contents
module Slim
# Perform interpolation of #{var_name} in the
# expressions `[:slim, :interpolate, string]`.
#
# @api private
class Interpolation < Filter
# Handle interpolate expression `[:slim, :interpolate, string]`
#
# @param [String] string Static interpolate
# @return [Array] Compiled temple expression
def on_slim_interpolate(string)
# Interpolate variables in text (#{variable}).
# Split the text into multiple dynamic and static parts.
block = [:multi]
begin
case string
when /\A\\#\{/
# Escaped interpolation
# Use [:slim, :output] because this is used by InterpolateTiltEngine
# to filter out protected strings (Issue #141).
block << [:slim, :output, false, '\'#{\'', [:multi]]
string = $'
when /\A#\{/
# Interpolation
string, code = parse_expression($')
escape = code !~ /\A\{.*\}\Z/
block << [:slim, :output, escape, escape ? code : code[1..-2], [:multi]]
when /\A(#|[^#]*)/
# Static text
block << [:static, $&]
string = $'
end
end until string.empty?
block
end
protected
def parse_expression(string)
count, i = 1, 0
while i < string.size && count != 0
if string[i] == ?{
count += 1
elsif string[i] == ?}
count -= 1
end
i += 1
end
raise "Text interpolation: Expected closing }" if count != 0
return string[i..-1], string[0, i-1]
end
end
end
Version data entries
47 entries across 47 versions & 2 rubygems