Class: Haml::RubyExpression

Inherits:
Object
  • Object
show all
Defined in:
lib/haml/ruby_expression.rb

Class Method Summary collapse

Class Method Details

.string_literal?(code) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/haml/ruby_expression.rb', line 18

def self.string_literal?(code)
  !string_literal_node(code).nil?
end

.string_literal_node(code) ⇒ Prism::Node?

Returns - the node of a string literal StringSplitter can split, if any. Its locations are byte offsets into code as given, so code must not be stripped here.

Returns:

  • (Prism::Node, nil) —
    • the node of a string literal StringSplitter can split, if any. Its locations are byte offsets into code as given, so code must not be stripped here.


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# File 'lib/haml/ruby_expression.rb', line 24

def self.string_literal_node(code)
  result = Prism.parse(code, **PARSE_OPTIONS)
  return if result.failure?

  statements = result.value.statements.body
  return if statements.size > 1

  case (node = statements.first)
  when Prism::StringNode, Prism::InterpolatedStringNode
    # Adjacent concatenation (`"a" "b"`) is one node without an opening
    # delimiter of its own, and each of its parts keeps its own quotes.
    node if !node.opening.nil? && node.opening != CHAR_LITERAL_OPENING
  end
end

.syntax_error?(code) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/haml/ruby_expression.rb', line 14

def self.syntax_error?(code)
  Prism.parse_failure?(code, **PARSE_OPTIONS)
end