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Haml::Engine#process_line is now told when a block is opened directly after the current line,

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making for a more elegant handling of Ruby blocks in silent script.


git-svn-id: svn://hamptoncatlin.com/haml/branches/edge@147 7063305b-7217-0410-af8c-cdc13e5119b9
This commit is contained in:
nex3 2006-11-18 06:32:03 +00:00
parent 40b3d61de4
commit 42add653d6
1 changed files with 34 additions and 24 deletions
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58
lib/haml/engine.rb
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@ -148,19 +148,31 @@ module Haml
_hamlout = @haml_stack[-1]
_erbout = _hamlout.buffer
END
@template.each_with_index do |line, index|
old_line = nil
old_index = nil
old_spaces = nil
old_tabs = nil
(@template + "\n\n").each_with_index do |line, index|
spaces, tabs = count_soft_tabs(line)
line = line.strip
suppress_render = handle_multiline(spaces, tabs, line, index)
if !suppress_render && spaces
count, line = process_line(spaces, tabs, line, index)
if old_line
block_opened = tabs > old_tabs
suppress_render = handle_multiline(old_spaces, old_tabs, old_line, old_index, block_opened)
if !suppress_render && old_spaces
process_line(old_spaces, old_tabs, old_line, old_index, block_opened)
end
end
old_line = line
old_index = index
old_spaces = spaces
old_tabs = tabs
end
# Make sure an ending multiline gets closed
handle_multiline(0, 0, nil, 0)
# Close all the open tags
@to_close_stack.length.times { close }
@ -173,27 +185,16 @@ module Haml
#
# This method doesn't return anything; it simply processes the line and
# adds the appropriate code to <tt>@precompiled</tt>.
def process_line(spaces, count, line, index)
def process_line(spaces, count, line, index, block_opened)
if line.length > 0
if count > @to_close_stack.size
# Indentation has been increased without a new tag
if @latest_command == SILENT_SCRIPT
# The indentation was increased after silent script,
# it must be a block
@to_close_stack.push [:script]
end
elsif count <= @to_close_stack.size && @to_close_stack.size > 0
if count <= @to_close_stack.size && @to_close_stack.size > 0
# The tabulation has gone down, and it's not because of one of
# Ruby's mid-block keywords
to_close = @to_close_stack.size - count
to_close.times do |i|
offset = to_close - 1 - i
unless offset == 0 && line.length > 2 && line[0] == SILENT_SCRIPT &&
MID_BLOCK_KEYWORDS.include?(line[1..-1].split[0])
unless offset == 0 && mid_block_keyword?(line)
close
end
end
@ -220,6 +221,9 @@ module Haml
sub_line = line[1..-1]
unless sub_line[0] == SILENT_COMMENT
push_silent(sub_line, index)
if block_opened && !mid_block_keyword?(line)
@to_close_stack.push([:script])
end
else
@latest_command = SILENT_COMMENT
end
@ -258,6 +262,12 @@ module Haml
end
end
end
# Returns whether or not the line is a silent script line with one
# of Ruby's mid-block keywords.
def mid_block_keyword?(line)
line.length > 2 && line[0] == SILENT_SCRIPT && MID_BLOCK_KEYWORDS.include?(line[1..-1].split[0])
end
# Deals with all the logic of figuring out whether a given line is
# the beginning, continuation, or end of a multiline sequence. Like
@ -266,7 +276,7 @@ module Haml
#
# This returns whether or not the line should be
# rendered normally.
def handle_multiline(spaces, count, line, index)
def handle_multiline(spaces, count, line, index, block_opened)
# Multilines are denoting by ending with a `|` (124)
if is_multiline?(line) && @multiline_buffer
# A multiline string is active, and is being continued
@ -281,7 +291,7 @@ module Haml
suppress_render = true
elsif @multiline_buffer
# A multiline string has just ended, make line into the result
process_line(@multiline_spaces, @multiline_count, @multiline_buffer, @multiline_index)
process_line(@multiline_spaces, @multiline_count, @multiline_buffer, @multiline_index, block_opened)
@multiline_buffer = nil
suppress_render = false
end