diff --git a/symbol/id.go b/symbol/id.go
new file mode 100644
index 0000000..e0c1bc7
--- /dev/null
+++ b/symbol/id.go
@@ -0,0 +1,91 @@
+package symbol
+
+type SymbolID int
+
+const (
+	SINGLE_INPUT       SymbolID = 256
+	FILE_INPUT         SymbolID = 257
+	EVAL_INPUT         SymbolID = 258
+	DECORATOR          SymbolID = 259
+	DECORATORS         SymbolID = 260
+	DECORATED          SymbolID = 261
+	ASYNC_FUNCDEF      SymbolID = 262
+	FUNCDEF            SymbolID = 263
+	PARAMETERS         SymbolID = 264
+	TYPEDARGSLIST      SymbolID = 265
+	TFPDEF             SymbolID = 266
+	VARARGSLIST        SymbolID = 267
+	VFPDEF             SymbolID = 268
+	STMT               SymbolID = 269
+	SIMPLE_STMT        SymbolID = 270
+	SMALL_STMT         SymbolID = 271
+	EXPR_STMT          SymbolID = 272
+	TESTLIST_STAR_EXPR SymbolID = 273
+	AUGASSIGN          SymbolID = 274
+	DEL_STMT           SymbolID = 275
+	PASS_STMT          SymbolID = 276
+	FLOW_STMT          SymbolID = 277
+	BREAK_STMT         SymbolID = 278
+	CONTINUE_STMT      SymbolID = 279
+	RETURN_STMT        SymbolID = 280
+	YIELD_STMT         SymbolID = 281
+	RAISE_STMT         SymbolID = 282
+	IMPORT_STMT        SymbolID = 283
+	IMPORT_NAME        SymbolID = 284
+	IMPORT_FROM        SymbolID = 285
+	IMPORT_AS_NAME     SymbolID = 286
+	DOTTED_AS_NAME     SymbolID = 287
+	IMPORT_AS_NAMES    SymbolID = 288
+	DOTTED_AS_NAMES    SymbolID = 289
+	DOTTED_NAME        SymbolID = 290
+	GLOBAL_STMT        SymbolID = 291
+	NONLOCAL_STMT      SymbolID = 292
+	ASSERT_STMT        SymbolID = 293
+	COMPOUND_STMT      SymbolID = 294
+	ASYNC_STMT         SymbolID = 295
+	IF_STMT            SymbolID = 296
+	WHILE_STMT         SymbolID = 297
+	FOR_STMT           SymbolID = 298
+	TRY_STMT           SymbolID = 299
+	WITH_STMT          SymbolID = 300
+	WITH_ITEM          SymbolID = 301
+	EXCEPT_CLAUSE      SymbolID = 302
+	SUITE              SymbolID = 303
+	TEST               SymbolID = 304
+	TEST_NOCOND        SymbolID = 305
+	LAMBDEF            SymbolID = 306
+	LAMBDEF_NOCOND     SymbolID = 307
+	OR_TEST            SymbolID = 308
+	AND_TEST           SymbolID = 309
+	NOT_TEST           SymbolID = 310
+	COMPARISON         SymbolID = 311
+	COMP_OP            SymbolID = 312
+	STAR_EXPR          SymbolID = 313
+	EXPR               SymbolID = 314
+	XOR_EXPR           SymbolID = 315
+	AND_EXPR           SymbolID = 316
+	SHIFT_EXPR         SymbolID = 317
+	ARITH_EXPR         SymbolID = 318
+	TERM               SymbolID = 319
+	FACTOR             SymbolID = 320
+	POWER              SymbolID = 321
+	ATOM_EXPR          SymbolID = 322
+	ATOM               SymbolID = 323
+	TESTLIST_COMP      SymbolID = 324
+	TRAILER            SymbolID = 325
+	SUBSCRIPTLIST      SymbolID = 326
+	SUBSCRIPT          SymbolID = 327
+	SLICEOP            SymbolID = 328
+	EXPRLIST           SymbolID = 329
+	TESTLIST           SymbolID = 330
+	DICTORSETMAKER     SymbolID = 331
+	CLASSDEF           SymbolID = 332
+	ARGLIST            SymbolID = 333
+	ARGUMENT           SymbolID = 334
+	COMP_ITER          SymbolID = 335
+	COMP_FOR           SymbolID = 336
+	COMP_IF            SymbolID = 337
+	ENCODING_DECL      SymbolID = 338
+	YIELD_EXPR         SymbolID = 339
+	YIELD_ARG          SymbolID = 340
+)
diff --git a/symbol/name.go b/symbol/name.go
new file mode 100644
index 0000000..677a88c
--- /dev/null
+++ b/symbol/name.go
@@ -0,0 +1,89 @@
+package symbol
+
+var SymbolNames = [...]string{
+	SINGLE_INPUT:       "SINGLE_INPUT",
+	FILE_INPUT:         "FILE_INPUT",
+	EVAL_INPUT:         "EVAL_INPUT",
+	DECORATOR:          "DECORATOR",
+	DECORATORS:         "DECORATORS",
+	DECORATED:          "DECORATED",
+	ASYNC_FUNCDEF:      "ASYNC_FUNCDEF",
+	FUNCDEF:            "FUNCDEF",
+	PARAMETERS:         "PARAMETERS",
+	TYPEDARGSLIST:      "TYPEDARGSLIST",
+	TFPDEF:             "TFPDEF",
+	VARARGSLIST:        "VARARGSLIST",
+	VFPDEF:             "VFPDEF",
+	STMT:               "STMT",
+	SIMPLE_STMT:        "SIMPLE_STMT",
+	SMALL_STMT:         "SMALL_STMT",
+	EXPR_STMT:          "EXPR_STMT",
+	TESTLIST_STAR_EXPR: "TESTLIST_STAR_EXPR",
+	AUGASSIGN:          "AUGASSIGN",
+	DEL_STMT:           "DEL_STMT",
+	PASS_STMT:          "PASS_STMT",
+	FLOW_STMT:          "FLOW_STMT",
+	BREAK_STMT:         "BREAK_STMT",
+	CONTINUE_STMT:      "CONTINUE_STMT",
+	RETURN_STMT:        "RETURN_STMT",
+	YIELD_STMT:         "YIELD_STMT",
+	RAISE_STMT:         "RAISE_STMT",
+	IMPORT_STMT:        "IMPORT_STMT",
+	IMPORT_NAME:        "IMPORT_NAME",
+	IMPORT_FROM:        "IMPORT_FROM",
+	IMPORT_AS_NAME:     "IMPORT_AS_NAME",
+	DOTTED_AS_NAME:     "DOTTED_AS_NAME",
+	IMPORT_AS_NAMES:    "IMPORT_AS_NAMES",
+	DOTTED_AS_NAMES:    "DOTTED_AS_NAMES",
+	DOTTED_NAME:        "DOTTED_NAME",
+	GLOBAL_STMT:        "GLOBAL_STMT",
+	NONLOCAL_STMT:      "NONLOCAL_STMT",
+	ASSERT_STMT:        "ASSERT_STMT",
+	COMPOUND_STMT:      "COMPOUND_STMT",
+	ASYNC_STMT:         "ASYNC_STMT",
+	IF_STMT:            "IF_STMT",
+	WHILE_STMT:         "WHILE_STMT",
+	FOR_STMT:           "FOR_STMT",
+	TRY_STMT:           "TRY_STMT",
+	WITH_STMT:          "WITH_STMT",
+	WITH_ITEM:          "WITH_ITEM",
+	EXCEPT_CLAUSE:      "EXCEPT_CLAUSE",
+	SUITE:              "SUITE",
+	TEST:               "TEST",
+	TEST_NOCOND:        "TEST_NOCOND",
+	LAMBDEF:            "LAMBDEF",
+	LAMBDEF_NOCOND:     "LAMBDEF_NOCOND",
+	OR_TEST:            "OR_TEST",
+	AND_TEST:           "AND_TEST",
+	NOT_TEST:           "NOT_TEST",
+	COMPARISON:         "COMPARISON",
+	COMP_OP:            "COMP_OP",
+	STAR_EXPR:          "STAR_EXPR",
+	EXPR:               "EXPR",
+	XOR_EXPR:           "XOR_EXPR",
+	AND_EXPR:           "AND_EXPR",
+	SHIFT_EXPR:         "SHIFT_EXPR",
+	ARITH_EXPR:         "ARITH_EXPR",
+	TERM:               "TERM",
+	FACTOR:             "FACTOR",
+	POWER:              "POWER",
+	ATOM_EXPR:          "ATOM_EXPR",
+	ATOM:               "ATOM",
+	TESTLIST_COMP:      "TESTLIST_COMP",
+	TRAILER:            "TRAILER",
+	SUBSCRIPTLIST:      "SUBSCRIPTLIST",
+	SUBSCRIPT:          "SUBSCRIPT",
+	SLICEOP:            "SLICEOP",
+	EXPRLIST:           "EXPRLIST",
+	TESTLIST:           "TESTLIST",
+	DICTORSETMAKER:     "DICTORSETMAKER",
+	CLASSDEF:           "CLASSDEF",
+	ARGLIST:            "ARGLIST",
+	ARGUMENT:           "ARGUMENT",
+	COMP_ITER:          "COMP_ITER",
+	COMP_FOR:           "COMP_FOR",
+	COMP_IF:            "COMP_IF",
+	ENCODING_DECL:      "ENCODING_DECL",
+	YIELD_EXPR:         "YIELD_EXPR",
+	YIELD_ARG:          "YIELD_ARG",
+}