Class: ActionviewPrecompiler::SyntaxTreeASTParser::RenderNode

Inherits:
Object
  • Object
show all
Defined in:
lib/actionview_precompiler/ast_parser/syntax_tree.rb

Overview

This class represents a node in the tree that is returned by the parser that corresponds to an argument to a render call, or a child of one of those nodes.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(node) ⇒ RenderNode

Returns a new instance of RenderNode.



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# File 'lib/actionview_precompiler/ast_parser/syntax_tree.rb', line 28

def initialize(node)
  @node = node
end

Instance Attribute Details

#node ⇒ Object (readonly)

Returns the value of attribute node.



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# File 'lib/actionview_precompiler/ast_parser/syntax_tree.rb', line 26

def node
  @node
end

Instance Method Details

#call? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/actionview_precompiler/ast_parser/syntax_tree.rb', line 32

def call?
  node.is_a?(SyntaxTree::Call)
end

#hash? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/actionview_precompiler/ast_parser/syntax_tree.rb', line 36

def hash?
  node.is_a?(SyntaxTree::HashLiteral) || node.is_a?(SyntaxTree::BareAssocHash)
end

#string? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/actionview_precompiler/ast_parser/syntax_tree.rb', line 40

def string?
  node.is_a?(SyntaxTree::StringLiteral)
end

#symbol? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/actionview_precompiler/ast_parser/syntax_tree.rb', line 44

def symbol?
  node.is_a?(SyntaxTree::Label) || node.is_a?(SyntaxTree::SymbolLiteral)
end

#to_hash ⇒ Object

Converts the node into a hash where the keys and values are nodes. This will raise an error if the hash doesn’t match the format we expect or if the hash contains any splats.



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# File 'lib/actionview_precompiler/ast_parser/syntax_tree.rb', line 59

def to_hash
  case node
  in SyntaxTree::HashLiteral[assocs:]
  in SyntaxTree::BareAssocHash[assocs:]
  else
    raise CompilationError, "Unexpected node type: #{node.class.name}"
  end

  assocs.to_h do |assoc|
    case assoc
    in SyntaxTree::Assoc[key:, value:]
      [RenderNode.new(key), RenderNode.new(value)]
    else
      raise CompilationError, "Unexpected node type: #{node.class.name}"
    end
  end
end

#to_string ⇒ Object

Converts the node into a string value. Only handles plain string content, and will raise an error if the node contains interpolation.



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# File 'lib/actionview_precompiler/ast_parser/syntax_tree.rb', line 79

def to_string
  case node
  in SyntaxTree::StringLiteral[parts: [SyntaxTree::TStringContent[value:]]]
    value
  in SyntaxTree::StringLiteral[parts:]
    raise CompilationError, "Unexpected string parts type: #{parts.inspect}"
  else
    raise CompilationError, "Unexpected node type: #{node.class.name}"
  end
end

#to_symbol ⇒ Object

Converts the node into a symbol value. Only handles labels and plain symbols, and will raise an error if the node contains interpolation.



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# File 'lib/actionview_precompiler/ast_parser/syntax_tree.rb', line 92

def to_symbol
  case node
  in SyntaxTree::Label[value:]
    value.chomp(":").to_sym
  in SyntaxTree::SymbolLiteral[value: SyntaxTree::Ident[value:]]
    value.to_sym
  in SyntaxTree::SymbolLiteral[value:]
    raise CompilationError, "Unexpected symbol value type: #{value.inspect}"
  else
    raise CompilationError, "Unexpected node type: #{node.class.name}"
  end
end

#variable_reference? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/actionview_precompiler/ast_parser/syntax_tree.rb', line 48

def variable_reference?
  node.is_a?(SyntaxTree::VarRef)
end

#vcall? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/actionview_precompiler/ast_parser/syntax_tree.rb', line 52

def vcall?
  node.is_a?(SyntaxTree::VCall)
end