Class: Luoma::Environment

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

Overview

Luoma template parsing and render configuration.

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 18

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 10

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 10

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 10

def globals
  @globals
end

#lexer ⇒ _Lexer

Returns the value of attribute lexer.

Returns:



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# File 'lib/luoma/environment.rb', line 10

def lexer
  @lexer
end

#loader ⇒ TemplateLoader

Returns the value of attribute loader.

Returns:



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# File 'lib/luoma/environment.rb', line 10

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 10

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 10

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 10

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 10

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 10

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 10

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 10

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 8

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 10

def predicates
  @predicates
end

#strict ⇒ Boolean

Returns the value of attribute strict.

Returns:

  • (Boolean) 


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# File 'lib/luoma/environment.rb', line 10

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 10

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 10

def tags
  @tags
end

#undefined ⇒ singleton(UndefinedDrop)

Returns the value of attribute undefined.

Returns:



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# File 'lib/luoma/environment.rb', line 10

def undefined
  @undefined
end

Instance Method Details

#cmp(left, right, context) ⇒ -1, ...

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

Parameters:

Returns:

  • (-1, 1, 0, nil) 


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# File 'lib/luoma/environment.rb', line 264

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

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

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

(untyped, untyped, RenderContext) -> bool

Parameters:

Returns:

  • (Boolean) 


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# File 'lib/luoma/environment.rb', line 233

def contains?(left, right, context)
  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 106

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 134

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 120

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

#eq?(left, right, context) ⇒ Boolean

(untyped, untyped, RenderContext) -> bool

Parameters:

Returns:

  • (Boolean) 


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# File 'lib/luoma/environment.rb', line 246

def eq?(left, right, context)
  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 84

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

#lt?(left, right, context) ⇒ Boolean?

(untyped, untyped, RenderContext) -> bool?

Parameters:

Returns:

  • (Boolean, nil) 


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

def lt?(left, right, context)
  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 456

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 277

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 64

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 99

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 127

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 113

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 79

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 288

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 139

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_js", Luoma::Filters.method(:escape_js))
  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_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 309

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 464

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 413

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 379

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 322

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 339

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 351

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 393

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 435

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 282

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