New bemGenerator
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@ -1,249 +1,115 @@
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// Storing the currents block properties and attributes
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// to generate the block afterwards
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/*
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* A method for iterating throug a
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* list/array safely since this language sucks
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* realy bad https://github.com/stylus/stylus/issues/1440
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*/
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foreach(list, callback)
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for entry in list
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_alias_map = {}
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_alias_stack = () ()
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work_stack(stack, callback)
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while length(stack) > 0
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entry = pop(_alias_stack)
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if entry != ()
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callback(entry)
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create_list()
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return () ()
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_block = {}
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reset_block()
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_block.elements = create_list()
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_block.block_modifiers = create_list()
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_block.alias = {
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map: {}
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stash: {
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RV-Element: create_list()
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RV-Element__Modifier: create_list()
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RV-Block__Modifier: create_list()
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}
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}
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_block.modifier_stash = create_list()
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_block.element_stash = create_list()
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// Calling the function to initiate the block
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// for first use
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reset_block()
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_bem_mixins = 'RV-Block','RV-Element','RV-Modifier','RV-Element__Modifier','RV-Block__Modifier'
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/*
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* Checks if the caller of this funcion is a direct
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* descendant of RV-Block. Checks for BEM-Mixins only.
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* If any other function or mixin is between the last
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* block and the caller, it will still count as an direct
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* descendant of RV-Block
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*/
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is_direct_descendant_of_block()
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block_index = index(called-from, 'RV-Block') - 1
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set_alias(alias, name)
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if name != null && alias != null
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_alias_map[alias] = name
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if block_index <= 0
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return true
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for i in (1..block_index)
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if called-from[i] in _bem_mixins
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return false
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return true
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/*
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* Checks if we are called inside a block
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*/
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is_in_block()
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return 'RV-Block' in called-from
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/*
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* Taking the currently stashed names, mapping
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* them to the given name under the called parent
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* (using called-from) and returning the stashed blocks
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*/
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generate_aliases(actual_name, level_type=null)
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if level_type == null
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level_type = split(' ', called-from)[0]
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if actual_name == null
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if length(_block.alias.stash[level_type]) > 2
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actual_name = _block.alias.stash[level_type][-1].name
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else
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warn('No name found for '+called-from)
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blocks = ()
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foreach(_block.alias.stash[level_type], @(alias){
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_block.alias.map[level_type+':'+alias.name] = actual_name
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push(blocks, alias.block)
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})
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_block.alias.stash[level_type] = create_list()
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return {
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name: actual_name
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blocks: blocks
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}
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/*
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* Resolving the alias according to the level type
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* (using called-from). Returning the given name
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* when no alias is found
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*/
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resolve_alias(name, level_type=null)
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if level_type == null
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level_type = split(' ', called-from)[0]
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if level_type+':'+name in _block.alias.map
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return _block.alias.map[level_type+':'+name]
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lookup_alias(name)
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if not _alias_map
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return name
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if name in _alias_map
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return _alias_map[name]
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else
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return name
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/*
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* Renders an element modifier
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*/
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render_element_modifier(modifier)
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&--{resolve_alias(modifier.name, 'RV-Element__Modifier')}
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foreach(modifier.blocks, @(block){
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{block}
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})
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/*
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* Renders an element
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*/
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render_element(element)
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&__{resolve_alias(element.name, 'RV-Element')}
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foreach(element.blocks, @(block){
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{block}
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})
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foreach(element.modifiers, @(modifier){
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render_element_modifier(modifier)
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})
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/*
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* Renders an block modifier,
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*/
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render_block_modifier(modifier)
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&--{resolve_alias(modifier.name, 'RV-Block__Modifier')}
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foreach(modifier.blocks, @(block){
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{block}
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})
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& ^[-2..-2]{
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foreach(modifier.elements, @(element){
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render_element(element)
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})
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}
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RV-Squash()
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{block}
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/*
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* Stashing the given block under the given
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* name to be aliased by a late level
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* (See generate_aliases)
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*/
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RV-Element--name(name)
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if 'RV-Squash' in called-from
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{block}
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else
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if 'RV-Element' in called-from
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push(_block.alias.stash.RV-Element, {
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name: name
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block: block
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})
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else
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{block}
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RV-Element__Modifier--name(name)
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if 'RV-Squash' in called-from
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{block}
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else
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if 'RV-Element__Modifier' in called-from
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push(_block.alias.stash.RV-Element__Modifier, {
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name: name
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block: block
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})
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else
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{block}
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store_alias(alias)
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if alias != null
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push(_alias_stack, alias)
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RV-Block__Modifier--name(name)
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if 'RV-Squash' in called-from
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pop_last_alias()
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return pop(_alias_stack)
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apply_alias_stack(name)
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work_stack(_alias_stack, @(element){
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set_alias(element, name)
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})
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auto_name(delimiter)
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if length(called-from) < 3
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return null
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name = split(delimiter, called-from[2])[-1]
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if name in ('RV-Element' 'RV-Block' 'RV-Element--modifier' 'RV-Block--modifier')
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return null
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return name
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is_nested(mixin_name=null)
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_free_hits = 0
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if mixin_name == null
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shift(called-from)
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mixin_name = shift(called-from)
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else
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_free_hits = 1
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for parent in called-from
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if parent == mixin_name
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if _free_hits == 0
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return true
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else
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_free_hits = _free_hits - 1
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return false
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is_nested_in(parent_name)
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return parent_name in called-from
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not_nested_in(parent_name)
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return !(parent_name in called-from)
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RV-Level(name, name_delimiter, allowed_parent_levels, selector_callback)
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if name == null
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name = auto_name(name_delimiter)
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not_in_parent = true
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for parent_level in allowed_parent_levels
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not_in_parent = not_in_parent && not_nested_in(parent_level)
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if is_nested_in('RV-Squash') || not_in_parent
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{block}
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else if is_nested()
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store_alias(name)
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{block}
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else
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if 'RV-Block__Modifier' in called-from
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push(_block.alias.stash.RV-Block__Modifier, {
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name: name
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block: block
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})
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else
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if name == null
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name = pop_last_alias()
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name = lookup_alias(name)
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apply_alias_stack(name)
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{selector_callback(name)}
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{block}
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RV-Block(block_name)
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& .{block_name}
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foreach(_block.elements, @(element){
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render_element(element)
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})
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foreach(_block.block_modifiers, @(modifier){
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render_block_modifier(modifier)
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})
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{block}
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reset_block()
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RV-Block__Modifier(modifier_name=null)
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if 'RV-Squash' in called-from
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{block}
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else
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blocks = generate_aliases(modifier_name)
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modifier_name = blocks.name
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blocks = blocks.blocks
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push(blocks, block)
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RV-Block(name)
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.{name}
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+prefix-classes(name)
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{block}
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define('_alias_map', {}, true)
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define('_alias_stack', () (), true)
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modifier = {
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name: modifier_name
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blocks: blocks
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elements: _block.element_stash
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RV-Element(name=null)
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+RV-Level(name, '__', ('RV-Block' 'RV-Block--modifier'), @(name){
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if is_nested_in('RV-Block--modifier') {
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return '& .__' + name
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}
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_block.element_stash = create_list()
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push(_block.block_modifiers, modifier)
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RV-Element(element_name=null)
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if 'RV-Squash' in called-from
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{block}
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else
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blocks = generate_aliases(element_name)
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element_name = blocks.name
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blocks = blocks.blocks
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push(blocks, block)
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element = {
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name: element_name
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blocks: blocks
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modifiers: _block.modifier_stash
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else {
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return '&__' + name
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}
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_block.modifier_stash = create_list()
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if is_direct_descendant_of_block()
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push(_block.elements, element)
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else
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push(_block.element_stash, element)
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RV-Element__Modifier(modifier_name=null)
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if 'RV-Squash' in called-from
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})
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{block}
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else
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blocks = generate_aliases(modifier_name)
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modifier_name = blocks.name
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blocks = blocks.blocks
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push(blocks, block)
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modifier = {
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name: modifier_name
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blocks: blocks
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}
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push(_block.modifier_stash, modifier)
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RV-Element--modifier(name=null)
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+RV-Level(name, '--', ('RV-Element'), @(name){return '&--' + name})
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{block}
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RV-Block--modifier(name=null)
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+RV-Level(name, '--', ('RV-Block'), @(name){return '&--' + name})
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{block}
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RV-Squash()
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{block}
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