Prism::Compiler

A compiler is a visitor that returns the value of each node as it visits. This is as opposed to a visitor which will only walk the tree. This can be useful when you are trying to compile a tree into a different format.

For example, to build a representation of the tree as s-expressions, you could write:

class SExpressions < Prism::Compiler
  def visit_arguments_node(node) = [:arguments, super]
  def visit_call_node(node) = [:call, super]
  def visit_integer_node(node) = [:integer]
  def visit_program_node(node) = [:program, super]
end

Prism.parse("1 + 2").value.accept(SExpressions.new)
# => [:program, [[[:call, [[:integer], [:arguments, [[:integer]]]]]]]]
Instance Methods

visit(node)

#

Visit an individual node.

visit_alias_global_variable_node(node)

#

Compile a AliasGlobalVariableNode node

visit_alias_method_node(node)

#

Compile a AliasMethodNode node

visit_all(nodes)

#

Visit a list of nodes.

visit_alternation_pattern_node(node)

#

Compile a AlternationPatternNode node

visit_and_node(node)

#

Compile a AndNode node

visit_arguments_node(node)

#

Compile a ArgumentsNode node

visit_array_node(node)

#

Compile a ArrayNode node

visit_array_pattern_node(node)

#

Compile a ArrayPatternNode node

visit_assoc_node(node)

#

Compile a AssocNode node

visit_assoc_splat_node(node)

#

Compile a AssocSplatNode node

visit_back_reference_read_node(node)

#

Compile a BackReferenceReadNode node

visit_begin_node(node)

#

Compile a BeginNode node

visit_block_argument_node(node)

#

Compile a BlockArgumentNode node

visit_block_local_variable_node(node)

#

Compile a BlockLocalVariableNode node

visit_block_node(node)

#

Compile a BlockNode node

visit_block_parameter_node(node)

#

Compile a BlockParameterNode node

visit_block_parameters_node(node)

#

Compile a BlockParametersNode node

visit_break_node(node)

#

Compile a BreakNode node

visit_call_and_write_node(node)

#

Compile a CallAndWriteNode node

visit_call_node(node)

#

Compile a CallNode node

visit_call_operator_write_node(node)

#

Compile a CallOperatorWriteNode node

visit_call_or_write_node(node)

#

Compile a CallOrWriteNode node

visit_call_target_node(node)

#

Compile a CallTargetNode node

visit_capture_pattern_node(node)

#

Compile a CapturePatternNode node

visit_case_match_node(node)

#

Compile a CaseMatchNode node

visit_case_node(node)

#

Compile a CaseNode node

visit_child_nodes(node)

#

Visit the child nodes of the given node.

visit_class_node(node)

#

Compile a ClassNode node

visit_class_variable_and_write_node(node)

#

Compile a ClassVariableAndWriteNode node

visit_class_variable_operator_write_node(node)

#

Compile a ClassVariableOperatorWriteNode node

visit_class_variable_or_write_node(node)

#

Compile a ClassVariableOrWriteNode node

visit_class_variable_read_node(node)

#

Compile a ClassVariableReadNode node

visit_class_variable_target_node(node)

#

Compile a ClassVariableTargetNode node

visit_class_variable_write_node(node)

#

Compile a ClassVariableWriteNode node

visit_constant_and_write_node(node)

#

Compile a ConstantAndWriteNode node

visit_constant_operator_write_node(node)

#

Compile a ConstantOperatorWriteNode node

visit_constant_or_write_node(node)

#

Compile a ConstantOrWriteNode node

visit_constant_path_and_write_node(node)

#

Compile a ConstantPathAndWriteNode node

visit_constant_path_node(node)

#

Compile a ConstantPathNode node

visit_constant_path_operator_write_node(node)

#

Compile a ConstantPathOperatorWriteNode node

visit_constant_path_or_write_node(node)

#

Compile a ConstantPathOrWriteNode node

visit_constant_path_target_node(node)

#

Compile a ConstantPathTargetNode node

visit_constant_path_write_node(node)

#

Compile a ConstantPathWriteNode node

visit_constant_read_node(node)

#

Compile a ConstantReadNode node

visit_constant_target_node(node)

#

Compile a ConstantTargetNode node

visit_constant_write_node(node)

#

Compile a ConstantWriteNode node

visit_defined_node(node)

#

Compile a DefinedNode node

visit_def_node(node)

#

Compile a DefNode node

visit_else_node(node)

#

Compile a ElseNode node

visit_embedded_statements_node(node)

#

Compile a EmbeddedStatementsNode node

visit_embedded_variable_node(node)

#

Compile a EmbeddedVariableNode node

visit_ensure_node(node)

#

Compile a EnsureNode node

visit_false_node(node)

#

Compile a FalseNode node

visit_find_pattern_node(node)

#

Compile a FindPatternNode node

visit_flip_flop_node(node)

#

Compile a FlipFlopNode node

visit_float_node(node)

#

Compile a FloatNode node

visit_for_node(node)

#

Compile a ForNode node

visit_forwarding_arguments_node(node)

#

Compile a ForwardingArgumentsNode node

visit_forwarding_parameter_node(node)

#

Compile a ForwardingParameterNode node

visit_forwarding_super_node(node)

#

Compile a ForwardingSuperNode node

visit_global_variable_and_write_node(node)

#

Compile a GlobalVariableAndWriteNode node

visit_global_variable_operator_write_node(node)

#

Compile a GlobalVariableOperatorWriteNode node

visit_global_variable_or_write_node(node)

#

Compile a GlobalVariableOrWriteNode node

visit_global_variable_read_node(node)

#

Compile a GlobalVariableReadNode node

visit_global_variable_target_node(node)

#

Compile a GlobalVariableTargetNode node

visit_global_variable_write_node(node)

#

Compile a GlobalVariableWriteNode node

visit_hash_node(node)

#

Compile a HashNode node

visit_hash_pattern_node(node)

#

Compile a HashPatternNode node

visit_if_node(node)

#

Compile a IfNode node

visit_imaginary_node(node)

#

Compile a ImaginaryNode node

visit_implicit_node(node)

#

Compile a ImplicitNode node

visit_implicit_rest_node(node)

#

Compile a ImplicitRestNode node

visit_index_and_write_node(node)

#

Compile a IndexAndWriteNode node

visit_index_operator_write_node(node)

#

Compile a IndexOperatorWriteNode node

visit_index_or_write_node(node)

#

Compile a IndexOrWriteNode node

visit_index_target_node(node)

#

Compile a IndexTargetNode node

visit_in_node(node)

#

Compile a InNode node

visit_instance_variable_and_write_node(node)

#

Compile a InstanceVariableAndWriteNode node

visit_instance_variable_operator_write_node(node)

#

Compile a InstanceVariableOperatorWriteNode node

visit_instance_variable_or_write_node(node)

#

Compile a InstanceVariableOrWriteNode node

visit_instance_variable_read_node(node)

#

Compile a InstanceVariableReadNode node

visit_instance_variable_target_node(node)

#

Compile a InstanceVariableTargetNode node

visit_instance_variable_write_node(node)

#

Compile a InstanceVariableWriteNode node

visit_integer_node(node)

#

Compile a IntegerNode node

visit_interpolated_match_last_line_node(node)

#

Compile a InterpolatedMatchLastLineNode node

visit_interpolated_regular_expression_node(node)

#

Compile a InterpolatedRegularExpressionNode node

visit_interpolated_string_node(node)

#

Compile a InterpolatedStringNode node

visit_interpolated_symbol_node(node)

#

Compile a InterpolatedSymbolNode node

visit_interpolated_x_string_node(node)

#

Compile a InterpolatedXStringNode node

visit_it_local_variable_read_node(node)

#

Compile a ItLocalVariableReadNode node

visit_it_parameters_node(node)

#

Compile a ItParametersNode node

visit_keyword_hash_node(node)

#

Compile a KeywordHashNode node

visit_keyword_rest_parameter_node(node)

#

Compile a KeywordRestParameterNode node

visit_lambda_node(node)

#

Compile a LambdaNode node

visit_local_variable_and_write_node(node)

#

Compile a LocalVariableAndWriteNode node

visit_local_variable_operator_write_node(node)

#

Compile a LocalVariableOperatorWriteNode node

visit_local_variable_or_write_node(node)

#

Compile a LocalVariableOrWriteNode node

visit_local_variable_read_node(node)

#

Compile a LocalVariableReadNode node

visit_local_variable_target_node(node)

#

Compile a LocalVariableTargetNode node

visit_local_variable_write_node(node)

#

Compile a LocalVariableWriteNode node

visit_match_last_line_node(node)

#

Compile a MatchLastLineNode node

visit_match_predicate_node(node)

#

Compile a MatchPredicateNode node

visit_match_required_node(node)

#

Compile a MatchRequiredNode node

visit_match_write_node(node)

#

Compile a MatchWriteNode node

visit_missing_node(node)

#

Compile a MissingNode node

visit_module_node(node)

#

Compile a ModuleNode node

visit_multi_target_node(node)

#

Compile a MultiTargetNode node

visit_multi_write_node(node)

#

Compile a MultiWriteNode node

visit_next_node(node)

#

Compile a NextNode node

visit_nil_node(node)

#

Compile a NilNode node

visit_no_keywords_parameter_node(node)

#

Compile a NoKeywordsParameterNode node

visit_numbered_parameters_node(node)

#

Compile a NumberedParametersNode node

visit_numbered_reference_read_node(node)

#

Compile a NumberedReferenceReadNode node

visit_optional_keyword_parameter_node(node)

#

Compile a OptionalKeywordParameterNode node

visit_optional_parameter_node(node)

#

Compile a OptionalParameterNode node

visit_or_node(node)

#

Compile a OrNode node

visit_parameters_node(node)

#

Compile a ParametersNode node

visit_parentheses_node(node)

#

Compile a ParenthesesNode node

visit_pinned_expression_node(node)

#

Compile a PinnedExpressionNode node

visit_pinned_variable_node(node)

#

Compile a PinnedVariableNode node

visit_post_execution_node(node)

#

Compile a PostExecutionNode node

visit_pre_execution_node(node)

#

Compile a PreExecutionNode node

visit_program_node(node)

#

Compile a ProgramNode node

visit_range_node(node)

#

Compile a RangeNode node

visit_rational_node(node)

#

Compile a RationalNode node

visit_redo_node(node)

#

Compile a RedoNode node

visit_regular_expression_node(node)

#

Compile a RegularExpressionNode node

visit_required_keyword_parameter_node(node)

#

Compile a RequiredKeywordParameterNode node

visit_required_parameter_node(node)

#

Compile a RequiredParameterNode node

visit_rescue_modifier_node(node)

#

Compile a RescueModifierNode node

visit_rescue_node(node)

#

Compile a RescueNode node

visit_rest_parameter_node(node)

#

Compile a RestParameterNode node

visit_retry_node(node)

#

Compile a RetryNode node

visit_return_node(node)

#

Compile a ReturnNode node

visit_self_node(node)

#

Compile a SelfNode node

visit_shareable_constant_node(node)

#

Compile a ShareableConstantNode node

visit_singleton_class_node(node)

#

Compile a SingletonClassNode node

visit_source_encoding_node(node)

#

Compile a SourceEncodingNode node

visit_source_file_node(node)

#

Compile a SourceFileNode node

visit_source_line_node(node)

#

Compile a SourceLineNode node

visit_splat_node(node)

#

Compile a SplatNode node

visit_statements_node(node)

#

Compile a StatementsNode node

visit_string_node(node)

#

Compile a StringNode node

visit_super_node(node)

#

Compile a SuperNode node

visit_symbol_node(node)

#

Compile a SymbolNode node

visit_true_node(node)

#

Compile a TrueNode node

visit_undef_node(node)

#

Compile a UndefNode node

visit_unless_node(node)

#

Compile a UnlessNode node

visit_until_node(node)

#

Compile a UntilNode node

visit_when_node(node)

#

Compile a WhenNode node

visit_while_node(node)

#

Compile a WhileNode node

visit_x_string_node(node)

#

Compile a XStringNode node

visit_yield_node(node)

#

Compile a YieldNode node