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cpython/Parser/token.c
Guido van Rossum 495da29225 bpo-35975: Support parsing earlier minor versions of Python 3 (GH-12086)
This adds a `feature_version` flag to `ast.parse()` (documented) and `compile()` (hidden) that allow tweaking the parser to support older versions of the grammar. In particular if `feature_version` is 5 or 6, the hacks for the `async` and `await` keyword from PEP 492 are reinstated. (For 7 or higher, these are unconditionally treated as keywords, but they are still special tokens rather than `NAME` tokens that the parser driver recognizes.)



https://bugs.python.org/issue35975
2019-03-07 12:38:08 -08:00

244 lines
4.5 KiB
C
Generated

/* Auto-generated by Tools/scripts/generate_token.py */
#include "Python.h"
#include "token.h"
/* Token names */
const char * const _PyParser_TokenNames[] = {
"ENDMARKER",
"NAME",
"NUMBER",
"STRING",
"NEWLINE",
"INDENT",
"DEDENT",
"LPAR",
"RPAR",
"LSQB",
"RSQB",
"COLON",
"COMMA",
"SEMI",
"PLUS",
"MINUS",
"STAR",
"SLASH",
"VBAR",
"AMPER",
"LESS",
"GREATER",
"EQUAL",
"DOT",
"PERCENT",
"LBRACE",
"RBRACE",
"EQEQUAL",
"NOTEQUAL",
"LESSEQUAL",
"GREATEREQUAL",
"TILDE",
"CIRCUMFLEX",
"LEFTSHIFT",
"RIGHTSHIFT",
"DOUBLESTAR",
"PLUSEQUAL",
"MINEQUAL",
"STAREQUAL",
"SLASHEQUAL",
"PERCENTEQUAL",
"AMPEREQUAL",
"VBAREQUAL",
"CIRCUMFLEXEQUAL",
"LEFTSHIFTEQUAL",
"RIGHTSHIFTEQUAL",
"DOUBLESTAREQUAL",
"DOUBLESLASH",
"DOUBLESLASHEQUAL",
"AT",
"ATEQUAL",
"RARROW",
"ELLIPSIS",
"COLONEQUAL",
"OP",
"AWAIT",
"ASYNC",
"TYPE_IGNORE",
"TYPE_COMMENT",
"<ERRORTOKEN>",
"<COMMENT>",
"<NL>",
"<ENCODING>",
"<N_TOKENS>",
};
/* Return the token corresponding to a single character */
int
PyToken_OneChar(int c1)
{
switch (c1) {
case '%': return PERCENT;
case '&': return AMPER;
case '(': return LPAR;
case ')': return RPAR;
case '*': return STAR;
case '+': return PLUS;
case ',': return COMMA;
case '-': return MINUS;
case '.': return DOT;
case '/': return SLASH;
case ':': return COLON;
case ';': return SEMI;
case '<': return LESS;
case '=': return EQUAL;
case '>': return GREATER;
case '@': return AT;
case '[': return LSQB;
case ']': return RSQB;
case '^': return CIRCUMFLEX;
case '{': return LBRACE;
case '|': return VBAR;
case '}': return RBRACE;
case '~': return TILDE;
}
return OP;
}
int
PyToken_TwoChars(int c1, int c2)
{
switch (c1) {
case '!':
switch (c2) {
case '=': return NOTEQUAL;
}
break;
case '%':
switch (c2) {
case '=': return PERCENTEQUAL;
}
break;
case '&':
switch (c2) {
case '=': return AMPEREQUAL;
}
break;
case '*':
switch (c2) {
case '*': return DOUBLESTAR;
case '=': return STAREQUAL;
}
break;
case '+':
switch (c2) {
case '=': return PLUSEQUAL;
}
break;
case '-':
switch (c2) {
case '=': return MINEQUAL;
case '>': return RARROW;
}
break;
case '/':
switch (c2) {
case '/': return DOUBLESLASH;
case '=': return SLASHEQUAL;
}
break;
case ':':
switch (c2) {
case '=': return COLONEQUAL;
}
break;
case '<':
switch (c2) {
case '<': return LEFTSHIFT;
case '=': return LESSEQUAL;
case '>': return NOTEQUAL;
}
break;
case '=':
switch (c2) {
case '=': return EQEQUAL;
}
break;
case '>':
switch (c2) {
case '=': return GREATEREQUAL;
case '>': return RIGHTSHIFT;
}
break;
case '@':
switch (c2) {
case '=': return ATEQUAL;
}
break;
case '^':
switch (c2) {
case '=': return CIRCUMFLEXEQUAL;
}
break;
case '|':
switch (c2) {
case '=': return VBAREQUAL;
}
break;
}
return OP;
}
int
PyToken_ThreeChars(int c1, int c2, int c3)
{
switch (c1) {
case '*':
switch (c2) {
case '*':
switch (c3) {
case '=': return DOUBLESTAREQUAL;
}
break;
}
break;
case '.':
switch (c2) {
case '.':
switch (c3) {
case '.': return ELLIPSIS;
}
break;
}
break;
case '/':
switch (c2) {
case '/':
switch (c3) {
case '=': return DOUBLESLASHEQUAL;
}
break;
}
break;
case '<':
switch (c2) {
case '<':
switch (c3) {
case '=': return LEFTSHIFTEQUAL;
}
break;
}
break;
case '>':
switch (c2) {
case '>':
switch (c3) {
case '=': return RIGHTSHIFTEQUAL;
}
break;
}
break;
}
return OP;
}