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add an ast_warn helper function to make adding those Py3k warnings easier

This commit is contained in:
Benjamin Peterson 2008-06-08 15:45:23 +00:00
parent 3219df1562
commit cbd78133fa
1 changed files with 15 additions and 7 deletions
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22
Python/ast.c
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@ -113,6 +113,19 @@ ast_error_finish(const char *filename)
PyErr_Restore(type, value, tback);
}
static int
ast_warn(struct compiling *c, const node *n, char *msg)
{
if (PyErr_WarnExplicit(PyExc_SyntaxWarning, msg, c->c_filename, LINENO(n),
NULL, NULL) < 0) {
/* if -Werr, change it to a SyntaxError */
if (PyErr_Occurred() && PyErr_ExceptionMatches(PyExc_SyntaxWarning))
ast_error(n, msg);
return 0;
}
return 1;
}
/* num_stmts() returns number of contained statements.
Use this routine to determine how big a sequence is needed for
@ -1363,14 +1376,9 @@ ast_for_atom(struct compiling *c, const node *n)
}
case BACKQUOTE: { /* repr */
expr_ty expression;
if (Py_Py3kWarningFlag) {
if (PyErr_WarnExplicit(PyExc_SyntaxWarning,
"backquote not supported in 3.x; use repr()",
c->c_filename, LINENO(n),
NULL, NULL)) {
if (Py_Py3kWarningFlag &&
!ast_warn(c, n, "backquote not supported in 3.x; use repr()"))
return NULL;
}
}
expression = ast_for_testlist(c, CHILD(n, 1));
if (!expression)
return NULL;