Mapping¶ ↑

When considering the previous CRuby parser versus prism, this document should be helpful to understand how various concepts are mapped.

Nodes¶ ↑

The following table shows how the various CRuby nodes are mapped to prism nodes.

CRuby	prism
`NODE_SCOPE`
`NODE_BLOCK`
`NODE_IF`	`PM_IF_NODE`
`NODE_UNLESS`	`PM_UNLESS_NODE`
`NODE_CASE`	`PM_CASE_NODE`
`NODE_CASE2`	`PM_CASE_NODE` (with a null predicate)
`NODE_CASE3`
`NODE_WHEN`	`PM_WHEN_NODE`
`NODE_IN`	`PM_IN_NODE`
`NODE_WHILE`	`PM_WHILE_NODE`
`NODE_UNTIL`	`PM_UNTIL_NODE`
`NODE_ITER`	`PM_CALL_NODE` (with a non-null block)
`NODE_FOR`	`PM_FOR_NODE`
`NODE_FOR_MASGN`	`PM_FOR_NODE` (with a multi-write node as the index)
`NODE_BREAK`	`PM_BREAK_NODE`
`NODE_NEXT`	`PM_NEXT_NODE`
`NODE_REDO`	`PM_REDO_NODE`
`NODE_RETRY`	`PM_RETRY_NODE`
`NODE_BEGIN`	`PM_BEGIN_NODE`
`NODE_RESCUE`	`PM_RESCUE_NODE`
`NODE_RESBODY`
`NODE_ENSURE`	`PM_ENSURE_NODE`
`NODE_AND`	`PM_AND_NODE`
`NODE_OR`	`PM_OR_NODE`
`NODE_MASGN`	`PM_MULTI_WRITE_NODE`
`NODE_LASGN`	`PM_LOCAL_VARIABLE_WRITE_NODE`
`NODE_DASGN`	`PM_LOCAL_VARIABLE_WRITE_NODE`
`NODE_GASGN`	`PM_GLOBAL_VARIABLE_WRITE_NODE`
`NODE_IASGN`	`PM_INSTANCE_VARIABLE_WRITE_NODE`
`NODE_CDECL`	`PM_CONSTANT_PATH_WRITE_NODE`
`NODE_CVASGN`	`PM_CLASS_VARIABLE_WRITE_NODE`
`NODE_OP_ASGN1`
`NODE_OP_ASGN2`
`NODE_OP_ASGN_AND`	`PM_OPERATOR_AND_ASSIGNMENT_NODE`
`NODE_OP_ASGN_OR`	`PM_OPERATOR_OR_ASSIGNMENT_NODE`
`NODE_OP_CDECL`
`NODE_CALL`	`PM_CALL_NODE`
`NODE_OPCALL`	`PM_CALL_NODE` (with an operator as the method)
`NODE_FCALL`	`PM_CALL_NODE` (with a null receiver and parentheses)
`NODE_VCALL`	`PM_CALL_NODE` (with a null receiver and parentheses or arguments)
`NODE_QCALL`	`PM_CALL_NODE` (with a &. operator)
`NODE_SUPER`	`PM_SUPER_NODE`
`NODE_ZSUPER`	`PM_FORWARDING_SUPER_NODE`
`NODE_LIST`	`PM_ARRAY_NODE`
`NODE_ZLIST`	`PM_ARRAY_NODE` (with no child elements)
`NODE_VALUES`	`PM_ARGUMENTS_NODE`
`NODE_HASH`	`PM_HASH_NODE`
`NODE_RETURN`	`PM_RETURN_NODE`
`NODE_YIELD`	`PM_YIELD_NODE`
`NODE_LVAR`	`PM_LOCAL_VARIABLE_READ_NODE`
`NODE_DVAR`	`PM_LOCAL_VARIABLE_READ_NODE`
`NODE_GVAR`	`PM_GLOBAL_VARIABLE_READ_NODE`
`NODE_IVAR`	`PM_INSTANCE_VARIABLE_READ_NODE`
`NODE_CONST`	`PM_CONSTANT_PATH_READ_NODE`
`NODE_CVAR`	`PM_CLASS_VARIABLE_READ_NODE`
`NODE_NTH_REF`	`PM_NUMBERED_REFERENCE_READ_NODE`
`NODE_BACK_REF`	`PM_BACK_REFERENCE_READ_NODE`
`NODE_MATCH`
`NODE_MATCH2`	`PM_CALL_NODE` (with regular expression as receiver)
`NODE_MATCH3`	`PM_CALL_NODE` (with regular expression as only argument)
`NODE_LIT`
`NODE_STR`	`PM_STRING_NODE`
`NODE_DSTR`	`PM_INTERPOLATED_STRING_NODE`
`NODE_XSTR`	`PM_X_STRING_NODE`
`NODE_DXSTR`	`PM_INTERPOLATED_X_STRING_NODE`
`NODE_EVSTR`	`PM_STRING_INTERPOLATED_NODE`
`NODE_DREGX`	`PM_INTERPOLATED_REGULAR_EXPRESSION_NODE`
`NODE_ONCE`
`NODE_ARGS`	`PM_PARAMETERS_NODE`
`NODE_ARGS_AUX`
`NODE_OPT_ARG`	`PM_OPTIONAL_PARAMETER_NODE`
`NODE_KW_ARG`	`PM_KEYWORD_PARAMETER_NODE`
`NODE_POSTARG`	`PM_REQUIRED_PARAMETER_NODE`
`NODE_ARGSCAT`
`NODE_ARGSPUSH`
`NODE_SPLAT`	`PM_SPLAT_NODE`
`NODE_BLOCK_PASS`	`PM_BLOCK_ARGUMENT_NODE`
`NODE_DEFN`	`PM_DEF_NODE` (with a null receiver)
`NODE_DEFS`	`PM_DEF_NODE` (with a non-null receiver)
`NODE_ALIAS`	`PM_ALIAS_NODE`
`NODE_VALIAS`	`PM_ALIAS_NODE` (with a global variable first argument)
`NODE_UNDEF`	`PM_UNDEF_NODE`
`NODE_CLASS`	`PM_CLASS_NODE`
`NODE_MODULE`	`PM_MODULE_NODE`
`NODE_SCLASS`	`PM_S_CLASS_NODE`
`NODE_COLON2`	`PM_CONSTANT_PATH_NODE`
`NODE_COLON3`	`PM_CONSTANT_PATH_NODE` (with a null receiver)
`NODE_DOT2`	`PM_RANGE_NODE` (with a .. operator)
`NODE_DOT3`	`PM_RANGE_NODE` (with a … operator)
`NODE_FLIP2`	`PM_RANGE_NODE` (with a .. operator)
`NODE_FLIP3`	`PM_RANGE_NODE` (with a … operator)
`NODE_SELF`	`PM_SELF_NODE`
`NODE_NIL`	`PM_NIL_NODE`
`NODE_TRUE`	`PM_TRUE_NODE`
`NODE_FALSE`	`PM_FALSE_NODE`
`NODE_ERRINFO`
`NODE_DEFINED`	`PM_DEFINED_NODE`
`NODE_POSTEXE`	`PM_POST_EXECUTION_NODE`
`NODE_DSYM`	`PM_INTERPOLATED_SYMBOL_NODE`
`NODE_ATTRASGN`	`PM_CALL_NODE` (with a message that ends with =)
`NODE_LAMBDA`	`PM_LAMBDA_NODE`
`NODE_ARYPTN`	`PM_ARRAY_PATTERN_NODE`
`NODE_HSHPTN`	`PM_HASH_PATTERN_NODE`
`NODE_FNDPTN`	`PM_FIND_PATTERN_NODE`
`NODE_ERROR`	`PM_MISSING_NODE`
`NODE_LAST`
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