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` | |
| “‘ |