Class: Luoma::Environment

Inherits:
Object
  • Object
show all
Defined in:
lib/luoma/environment.rb,
sig/luoma/environment.rbs

Constant Summary collapse

RE_INTEGER =

Returns:

  • (Regexp) 
/\A-?\d+(?:[eE]\+?\d+)?\Z/
RE_DECIMAL =

Returns:

  • (Regexp) 
/((?:-?\d+\.\d+(?:[eE][+-]?\d+)?)|(-?\d+[eE]-\d+))/

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(auto_trim: nil, globals: nil, lexer: UnifiedLexer, loader: nil, max_assign_score_cumulative: nil, max_assign_score: nil, max_context_depth: 30, max_render_score_cumulative: nil, max_render_score: nil, max_render_size: nil, parser: UnifiedParser, strict: false, suppress_blank_control_flow_blocks: true, undefined: UndefinedDrop) ⇒ Environment

Returns a new instance of Environment.



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# File 'lib/luoma/environment.rb', line 17

def initialize(
  auto_trim: nil,
  globals: nil,
  lexer: UnifiedLexer,
  loader: nil,
  max_assign_score_cumulative: nil,
  max_assign_score: nil,
  max_context_depth: 30,
  max_render_score_cumulative: nil,
  max_render_score: nil,
  max_render_size: nil,
  parser: UnifiedParser,
  strict: false,
  suppress_blank_control_flow_blocks: true,
  undefined: UndefinedDrop
)
  @auto_trim = auto_trim
  @globals = globals
  @lexer = lexer
  @loader = loader || HashLoader.new({})
  @max_assign_score = max_assign_score
  @max_assign_score_cumulative = max_assign_score_cumulative
  @max_context_depth = max_context_depth
  @max_render_score = max_render_score
  @max_render_score_cumulative = max_render_score_cumulative
  @max_render_size = max_render_size
  @parser = parser
  @strict = strict
  @suppress_blank_control_flow_blocks = suppress_blank_control_flow_blocks
  @undefined = undefined

  @tags = {} #: Hash[String, _Tag]
  @filters = {} #: Hash[String, untyped]
  @predicates = {} #: Hash[String, ^(untyped) -> bool]
  setup_tags_filters_and_predicates

  # Render context registers that persist when copying an instance of
  # `RenderContext`.
  @persistent_registers = Set[:extends_stack] #: Set[Symbol]
end

Instance Attribute Details

#auto_trim ⇒ '-', ...

Returns the value of attribute auto_trim.

Returns:

  • ('-', '~', nil) 


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# File 'lib/luoma/environment.rb', line 9

def auto_trim
  @auto_trim
end

#filters ⇒ Hash[String, untyped]

Returns the value of attribute filters.

Returns:

  • (Hash[String, untyped]) 


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# File 'lib/luoma/environment.rb', line 9

def filters
  @filters
end

#globals ⇒ t_namespace?

Returns the value of attribute globals.

Returns:

  • (t_namespace, nil) 


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# File 'lib/luoma/environment.rb', line 9

def globals
  @globals
end

#lexer ⇒ _Lexer

Returns the value of attribute lexer.

Returns:



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# File 'lib/luoma/environment.rb', line 9

def lexer
  @lexer
end

#loader ⇒ TemplateLoader

Returns the value of attribute loader.

Returns:



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# File 'lib/luoma/environment.rb', line 9

def loader
  @loader
end

#max_assign_score ⇒ Integer?

Returns the value of attribute max_assign_score.

Returns:

  • (Integer, nil) 


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# File 'lib/luoma/environment.rb', line 9

def max_assign_score
  @max_assign_score
end

#max_assign_score_cumulative ⇒ Integer?

Returns the value of attribute max_assign_score_cumulative.

Returns:

  • (Integer, nil) 


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# File 'lib/luoma/environment.rb', line 9

def max_assign_score_cumulative
  @max_assign_score_cumulative
end

#max_context_depth ⇒ Integer

Returns the value of attribute max_context_depth.

Returns:

  • (Integer) 


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# File 'lib/luoma/environment.rb', line 9

def max_context_depth
  @max_context_depth
end

#max_render_score ⇒ Integer?

Returns the value of attribute max_render_score.

Returns:

  • (Integer, nil) 


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# File 'lib/luoma/environment.rb', line 9

def max_render_score
  @max_render_score
end

#max_render_score_cumulative ⇒ Integer?

Returns the value of attribute max_render_score_cumulative.

Returns:

  • (Integer, nil) 


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# File 'lib/luoma/environment.rb', line 9

def max_render_score_cumulative
  @max_render_score_cumulative
end

#max_render_size ⇒ Integer?

Returns the value of attribute max_render_size.

Returns:

  • (Integer, nil) 


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# File 'lib/luoma/environment.rb', line 9

def max_render_size
  @max_render_size
end

#parser ⇒ _Parser

Returns the value of attribute parser.

Returns:



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# File 'lib/luoma/environment.rb', line 9

def parser
  @parser
end

#persistent_registers ⇒ Set[Symbol] (readonly)

Returns the value of attribute persistent_registers.

Returns:

  • (Set[Symbol]) 


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# File 'lib/luoma/environment.rb', line 7

def persistent_registers
  @persistent_registers
end

#predicates ⇒ Hash[String, ^(untyped) -> bool]

Returns the value of attribute predicates.

Returns:

  • (Hash[String, ^(untyped) -> bool]) 


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# File 'lib/luoma/environment.rb', line 9

def predicates
  @predicates
end

#strict ⇒ Boolean

Returns the value of attribute strict.

Returns:

  • (Boolean) 


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# File 'lib/luoma/environment.rb', line 9

def strict
  @strict
end

#suppress_blank_control_flow_blocks ⇒ Object

Returns the value of attribute suppress_blank_control_flow_blocks.



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# File 'lib/luoma/environment.rb', line 9

def suppress_blank_control_flow_blocks
  @suppress_blank_control_flow_blocks
end

#tags ⇒ Hash[String, _Tag]

Returns the value of attribute tags.

Returns:

  • (Hash[String, _Tag]) 


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# File 'lib/luoma/environment.rb', line 9

def tags
  @tags
end

#undefined ⇒ singleton(UndefinedDrop)

Returns the value of attribute undefined.

Returns:



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# File 'lib/luoma/environment.rb', line 9

def undefined
  @undefined
end

Instance Method Details

#cmp(left, right, context, token) ⇒ -1, ...

(untyped, untyped, RenderContext, t_token) -> (-1 | 1 | 0 | nil)

Parameters:

  • left (Object)
  • right (Object)
  • context (RenderContext)
  • token (t_token)

Returns:

  • (-1, 1, 0, nil) 


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# File 'lib/luoma/environment.rb', line 265

def cmp(left, right, context, token)
  return -1 if lt?(left, right, context, token)
  return  1 if lt?(right, left, context, token)
  return  0 if eq?(left, right, context, token)

  if left.nil? || nothing?(left)
    1
  elsif right.nil? || nothing?(right)
    -1
  end
end

#contains?(left, right, context, token) ⇒ Boolean

(untyped, untyped, RenderContext, t_token) -> bool

Parameters:

  • left (Object)
  • right (Object)
  • context (RenderContext)
  • token (t_token)

Returns:

  • (Boolean) 


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# File 'lib/luoma/environment.rb', line 232

def contains?(left, right, context, token)
  return left.contains?(right, context) if left.is_a?(Drop)

  right = right.to_primitive(:data, context) if right.is_a?(Drop)

  if left && right && left.respond_to?(:include?)
    left.include?(left.is_a?(String) ? right.to_s : right)
  else
    false
  end
end

#delete_filter(name) ⇒ void

This method returns an undefined value.

Remove a filter from the filter register.

Signature:

  • (String) -> untyped

Parameters:

  • name (String) 


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# File 'lib/luoma/environment.rb', line 105

def delete_filter(name)
  @filters.delete(name)
end

#delete_predicate(name) ⇒ Object

Remove a predicate from the predicate register.

Signature:

  • (String) -> (^(untyped) -> bool | nil)

Parameters:

  • name (String)

Returns:

  • (Object) 


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# File 'lib/luoma/environment.rb', line 133

def delete_predicate(name)
  @predicates.delete(name)
end

#delete_tag(name) ⇒ _Tag?

Remove a tag from the tag register.

Signature:

  • (String) -> (_Tag | nil)

Parameters:

  • name (String)

Returns:



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# File 'lib/luoma/environment.rb', line 119

def delete_tag(name)
  @tags.delete(name)
end

#eq?(left, right, context, token) ⇒ Boolean

(untyped, untyped, RenderContext, t_token) -> bool

Parameters:

  • left (Object)
  • right (Object)
  • context (RenderContext)
  • token (t_token)

Returns:

  • (Boolean) 


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# File 'lib/luoma/environment.rb', line 245

def eq?(left, right, context, token)
  # TODO: Don't accepts token
  return left.eq?(right, context) if left.is_a?(Drop)
  return right.eq?(left, context) if right.is_a?(Drop)

  left == right
end

#get_template(name, globals: nil, context: nil) ⇒ Template

(String, ?globals: t_namespace?, ?context: RenderContext?, **untyped) -> Template

Parameters:

  • name (String)
  • globals: (t_namespace, nil) (defaults to: nil)
  • context: (RenderContext, nil) (defaults to: nil)
  • kwargs (Object)

Returns:



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# File 'lib/luoma/environment.rb', line 83

def get_template(name, globals: nil, context: nil, **)
  @loader.load(self, name, globals: globals, context: context, **)
end

#lt?(left, right, context, token) ⇒ Boolean?

(untyped, untyped, RenderContext, t_token) -> bool?

Parameters:

  • left (Object)
  • right (Object)
  • context (RenderContext)
  • token (t_token)

Returns:

  • (Boolean, nil) 


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# File 'lib/luoma/environment.rb', line 254

def lt?(left, right, context, token)
  # TODO: Don't accepts token
  return left.lt?(right, context) if left.is_a?(Drop)
  return right.gt?(left, context) if right.is_a?(Drop)

  left < right
rescue ArgumentError, NoMethodError, TypeError
  nil
end

#make_globals(namespace) ⇒ t_namespace?

(t_namespace?) -> t_namespace?

Parameters:

  • namespace (t_namespace, nil)

Returns:

  • (t_namespace, nil) 


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# File 'lib/luoma/environment.rb', line 457

def make_globals(namespace)
  namespace_ = {} #: t_namespace
  namespace_.merge!(@globals) if @globals # steep:ignore
  namespace_.merge!(namespace) if namespace
  namespace_
end

#nothing?(obj) ⇒ Boolean

(untyped) -> bool

Parameters:

  • obj (Object)

Returns:

  • (Boolean) 


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# File 'lib/luoma/environment.rb', line 278

def nothing?(obj)
  obj == :nothing || obj.is_a?(UndefinedDrop)
end

#parse(source, globals: nil, name: nil, overlay: nil, up_to_date: nil) ⇒ Template

(String, ?globals: t_namespace?, ?name: String?, ?overlay: t_namespace?, ?up_to_date: Proc::_Callable?) -> Template

Parameters:

  • source (String)
  • globals: (t_namespace, nil) (defaults to: nil)
  • name: (String, nil) (defaults to: nil)
  • overlay: (t_namespace, nil) (defaults to: nil)
  • up_to_date: (Object, nil) (defaults to: nil)

Returns:



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# File 'lib/luoma/environment.rb', line 63

def parse(source, globals: nil, name: nil, overlay: nil, up_to_date: nil)
  Template.new(
    self,
    source,
    @parser.parse(self, source, name || "", @lexer.tokenize(self, source)),
    globals: make_globals(globals),
    name: name,
    overlay: overlay,
    up_to_date: up_to_date
  )
end

#register_filter(name, callable) ⇒ void

This method returns an undefined value.

Add or replace a filter. The same callable can be registered multiple times with different names.

When evaluated as a filter, callable will be called with an instance of FilterContext as the first argument, and the result of the expression to the left of the pipe operator as the second argument.

Remaining positional and keyword arguments are passed through from the filter invocation.

Signature:

  • (String, untyped) -> void

Parameters:

  • name (String)
  • callable (Object) 


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# File 'lib/luoma/environment.rb', line 98

def register_filter(name, callable)
  @filters[name] = callable
end

#register_predicate(name, callable) ⇒ void

This method returns an undefined value.

Add or replace a predicate function.

Signature:

  • (String, ^(untyped) -> bool) -> void

Parameters:

  • name (String)
  • callable (Object) 


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# File 'lib/luoma/environment.rb', line 126

def register_predicate(name, callable)
  @predicates[name] = callable
end

#register_tag(name, tag) ⇒ void

This method returns an undefined value.

Add or replace a tag.

Signature:

  • (String, _Tag) -> void

Parameters:

  • name (String)
  • tag (_Tag) 


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# File 'lib/luoma/environment.rb', line 112

def register_tag(name, tag)
  @tags[name] = tag
end

#render(source, data = nil) ⇒ String

(String, ?t_namespace?) -> String

Parameters:

  • source (String)
  • data (t_namespace, nil) (defaults to: nil)

Returns:

  • (String) 


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# File 'lib/luoma/environment.rb', line 78

def render(source, data = nil)
  parse(source).render(data)
end

#serialize(obj, context) ⇒ String

(untyped, RenderContext) -> String

Parameters:

Returns:

  • (String) 


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# File 'lib/luoma/environment.rb', line 289

def serialize(obj, context)
  case obj
  when Drop
    s = obj.render(context)
    s.nil? ? to_string(obj, context) : s
  when Array
    if obj.all?(String)
      to_string(obj, context)
    elsif obj.all?(BlockDrop)
      obj.map { |i| i.render(context) }.join("\n")
    elsif obj.all? { |i| i.is_a?(String) || i.is_a?(BlockDrop) }
      obj.map { |i| i.is_a?(String) ? i : i.render(context) }.join
    else # rubocop: disable Lint/DuplicateBranch
      to_string(obj, context)
    end
  else
    to_string(obj, context)
  end
end

#setup_tags_filters_and_predicates ⇒ void

This method returns an undefined value.

() -> void



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# File 'lib/luoma/environment.rb', line 138

def setup_tags_filters_and_predicates
  @tags["assign"] = AssignTag
  @tags["capture"] = CaptureTag
  @tags["case"] = CaseTag
  @tags["define"] = DefineTag
  @tags["for"] = ForTag
  @tags["break"] = BreakTag
  @tags["continue"] = ContinueTag
  @tags["if"] = IfTag
  @tags["import"] = ImportTag
  @tags["include"] = IncludeTag
  @tags["raw"] = RawTag
  @tags["render"] = RenderTag
  @tags["with"] = WithTag

  register_filter("abs", Luoma::Filters.method(:abs))
  register_filter("all", Luoma::Filters.method(:all))
  register_filter("any", Luoma::Filters.method(:any))
  register_filter("append", Luoma::Filters.method(:append))
  register_filter("at_least", Luoma::Filters.method(:at_least))
  register_filter("at_most", Luoma::Filters.method(:at_most))
  register_filter("capitalize", Luoma::Filters.method(:capitalize))
  register_filter("ceil", Luoma::Filters.method(:ceil))
  register_filter("compact", Luoma::Filters.method(:compact))
  register_filter("concat", Luoma::Filters.method(:concat))
  register_filter("date", Luoma::Filters.method(:date))
  register_filter("default", Luoma::Filters.method(:default))
  register_filter("divided_by", Luoma::Filters.method(:divided_by))
  register_filter("downcase", Luoma::Filters.method(:downcase))
  register_filter("escape_once", Luoma::Filters.method(:escape_once))
  register_filter("escape", Luoma::Filters.method(:escape))
  register_filter("find_index", Luoma::Filters.method(:find_index))
  register_filter("find", Luoma::Filters.method(:find))
  register_filter("first", Luoma::Filters.method(:first))
  register_filter("flatten", Luoma::Filters.method(:flatten))
  register_filter("flat_map", Luoma::Filters.method(:flat_map))
  register_filter("floor", Luoma::Filters.method(:floor))
  register_filter("join", Luoma::Filters.method(:join))
  register_filter("json", Luoma::Filters.method(:json))
  register_filter("last", Luoma::Filters.method(:last))
  register_filter("lstrip", Luoma::Filters.method(:lstrip))
  register_filter("map", Luoma::Filters.method(:map))
  register_filter("max", Luoma::Filters.method(:max))
  register_filter("min", Luoma::Filters.method(:min))
  register_filter("minus", Luoma::Filters.method(:minus))
  register_filter("modulo", Luoma::Filters.method(:modulo))
  register_filter("newline_to_br", Luoma::Filters.method(:newline_to_br))
  register_filter("plus", Luoma::Filters.method(:plus))
  register_filter("prepend", Luoma::Filters.method(:prepend_))
  register_filter("squish", Luoma::Filters.method(:squish))
  register_filter("reject", Luoma::Filters.method(:reject))
  register_filter("remove_first", Luoma::Filters.method(:remove_first))
  register_filter("remove_last", Luoma::Filters.method(:remove_last))
  register_filter("remove", Luoma::Filters.method(:remove))
  register_filter("replace_first", Luoma::Filters.method(:replace_first))
  register_filter("replace_last", Luoma::Filters.method(:replace_last))
  register_filter("replace", Luoma::Filters.method(:replace))
  register_filter("reverse", Luoma::Filters.method(:reverse))
  register_filter("round", Luoma::Filters.method(:round))
  register_filter("rstrip", Luoma::Filters.method(:rstrip))
  register_filter("size", Luoma::Filters.method(:size))
  register_filter("slice", Luoma::Filters.method(:slice))
  register_filter("sort", Luoma::Filters.method(:sort))
  register_filter("sort_natural", Luoma::Filters.method(:sort_natural))
  register_filter("sort_numeric", Luoma::Filters.method(:sort_numeric))
  register_filter("split", Luoma::Filters.method(:split))
  register_filter("strip_html", Luoma::Filters.method(:strip_html))
  register_filter("strip_newlines", Luoma::Filters.method(:strip_newlines))
  register_filter("strip", Luoma::Filters.method(:strip))
  register_filter("sum", Luoma::Filters.method(:sum))
  register_filter("take", Luoma::Filters.method(:take))
  register_filter("times", Luoma::Filters.method(:times))
  register_filter("truncate", Luoma::Filters.method(:truncate))
  register_filter("truncatewords", Luoma::Filters.method(:truncatewords))
  register_filter("uniq", Luoma::Filters.method(:uniq))
  register_filter("upcase", Luoma::Filters.method(:upcase))
  register_filter("url_decode", Luoma::Filters.method(:url_decode))
  register_filter("url_encode", Luoma::Filters.method(:url_encode))
  register_filter("where", Luoma::Filters.method(:where))
  register_filter("filter", Luoma::Filters.method(:where))
  register_filter("zip", Luoma::Filters.method(:zip))

  register_predicate("array", Luoma::Predicates.method(:array?))
  register_predicate("blank", Luoma::Predicates.method(:blank?))
  register_predicate("defined", Luoma::Predicates.method(:defined?))
  register_predicate("empty", Luoma::Predicates.method(:empty?))
  register_predicate("null", Luoma::Predicates.method(:null?))
  register_predicate("number", Luoma::Predicates.method(:number?))
  register_predicate("numeric", Luoma::Predicates.method(:numeric?))
  register_predicate("object", Luoma::Predicates.method(:object?))
  register_predicate("string", Luoma::Predicates.method(:string?))
end

#to_a(obj, context) ⇒ Array[untyped]

(untyped, RenderContext) -> Array

Parameters:

Returns:

  • (Array[untyped]) 


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# File 'lib/luoma/environment.rb', line 310

def to_a(obj, context)
  if obj.is_a?(Array)
    obj
  elsif obj.is_a?(String)
    obj.each_char.to_a
  elsif obj.respond_to?(:to_a)
    obj.to_a
  else
    [obj]
  end
end

#to_data(obj, context) ⇒ Object

(untyped, RenderContext) -> untyped

Parameters:

Returns:

  • (Object) 


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# File 'lib/luoma/environment.rb', line 465

def to_data(obj, context)
  case obj
  when nil, true, false, Numeric, String
    obj
  when Array
    obj.map { |v| to_data(v, context) }
  when Hash
    obj.transform_values { |v| to_data(v, context) }
  when Drop
    obj.to_primitive(:data, context)
  when Symbol
    ""
  end
end

#to_date(obj, context) ⇒ Object

Cast obj to a date and time. Return nil if casting fails. NOTE: This was copied from Shopify/liquid.

Parameters:

Returns:

  • (Object) 


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# File 'lib/luoma/environment.rb', line 414

def to_date(obj, context)
  return obj if obj.respond_to?(:strftime)

  if obj.is_a?(String)
    return nil if obj.empty?

    obj = obj.downcase
  end

  case obj
  when "now", "today"
    Time.now
  when /\A\d+\z/, Integer
    Time.at(obj.to_i)
  when String
    Time.parse(obj)
  end
rescue ::ArgumentError
  nil
end

#to_enumerable(obj, context) ⇒ Enumerable[untyped]

(untyped, RenderContext) -> Enumerable

Parameters:

Returns:

  • (Enumerable[untyped]) 


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# File 'lib/luoma/environment.rb', line 380

def to_enumerable(obj, context)
  case obj
  when Drop
    obj.each
  when Enumerable
    obj.to_enum
  when String
    obj.each_char
  else
    obj.respond_to?(:each) ? obj.each : [obj]
  end
end

#to_h(obj, context) ⇒ Hash[untyped, untyped]

(untyped, RenderContext) -> Hash[untyped, untyped]

Parameters:

Returns:

  • (Hash[untyped, untyped]) 


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# File 'lib/luoma/environment.rb', line 323

def to_h(obj, context)
  if obj.is_a?(Hash)
    obj
  elsif obj.is_a(Drop)
    obj = obj.to_primitive("object", context)
    nothing?(obj) ? {} : obj
  elsif obj.respond_to?(:to_h)
    obj.to_h
  else
    {}
  end
end

#to_i(obj, context, default: :nothing) ⇒ void

This method returns an undefined value.

[X] (untyped, RenderContext, ?default: X) -> (Integer | X)



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# File 'lib/luoma/environment.rb', line 340

def to_i(obj, context, default: :nothing)
  return obj if obj.is_a?(Integer)
  return obj.to_i if obj.respond_to?(:to_i) && !obj.is_a?(String)

  begin
    Integer(obj.to_s)
  rescue ::ArgumentError
    default
  end
end

#to_numeric(obj, context, default: :nothing) ⇒ void

This method returns an undefined value.

[X] (untyped, RenderContext, ?default: X) -> (Numeric | X)



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# File 'lib/luoma/environment.rb', line 352

def to_numeric(obj, context, default: :nothing)
  case obj
  when ::Float
    BigDecimal(obj)
  when Numeric
    obj
  when ::String
    case obj
    when RE_INTEGER
      obj.to_f.to_i
    when RE_DECIMAL
      BigDecimal(obj)
    else
      default
    end
  when true
    1
  when false
    0
  when Drop
    n = obj.to_primitive(:numeric, context)
    n == :nothing ? default : n
  else
    default
  end
end

#to_string(obj, context) ⇒ String

(untyped, RenderContext) -> String

Parameters:

Returns:

  • (String) 


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# File 'lib/luoma/environment.rb', line 394

def to_string(obj, context)
  case obj
  when String
    obj
  when Hash, Array
    JSON.generate(to_data(obj, context))
  when BigDecimal
    # obj.to_s("F") gives higher precision
    obj.to_f.to_s
  when Drop
    obj.to_primitive(:string, context)
  when Symbol
    ""
  else
    obj.to_s
  end
end

#trim(value, left, right) ⇒ String

(String, String?, String?) -> String

Parameters:

  • value (String)
  • left (String, nil)
  • right (String, nil)

Returns:

  • (String) 


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# File 'lib/luoma/environment.rb', line 436

def trim(value, left, right)
  case left || @auto_trim
  when "-"
    value.lstrip!
  when "~"
    value.sub!(/\A[\r\n]+/, "")
  end

  case right
  when "-"
    value.rstrip!
  when "~"
    value.sub!(/[\r\n]+\Z/, "")
  end

  value
end

#truthy?(obj, context) ⇒ Boolean

(untyped, RenderContext) -> bool

Parameters:

Returns:

  • (Boolean) 


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# File 'lib/luoma/environment.rb', line 283

def truthy?(obj, context)
  obj = obj.to_primitive(:boolean, context) if obj.is_a?(Drop)
  !nothing?(obj) && !!obj
end