diff options
Diffstat (limited to 'Python')
| -rw-r--r-- | Python/ast.c | 51 |
1 files changed, 26 insertions, 25 deletions
diff --git a/Python/ast.c b/Python/ast.c index b8cb56561f..2f974c0eba 100644 --- a/Python/ast.c +++ b/Python/ast.c @@ -673,6 +673,8 @@ handle_keywordonly_args(struct compiling *c, const node *n, int start, case tfpdef: if (i + 1 < NCH(n) && TYPE(CHILD(n, i + 1)) == EQUAL) { expression = ast_for_expr(c, CHILD(n, i + 2)); + if (!expression) + goto error; asdl_seq_SET(kwdefaults, j, expression); i += 2; /* '=' and test */ } @@ -682,10 +684,8 @@ handle_keywordonly_args(struct compiling *c, const node *n, int start, if (NCH(ch) == 3) { /* ch is NAME ':' test */ annotation = ast_for_expr(c, CHILD(ch, 2)); - if (!annotation) { - ast_error(ch, "expected expression"); + if (!annotation) goto error; - } } else { annotation = NULL; @@ -777,22 +777,22 @@ ast_for_arguments(struct compiling *c, const node *n) } posargs = (nposargs ? asdl_seq_new(nposargs, c->c_arena) : NULL); if (!posargs && nposargs) - goto error; + return NULL; kwonlyargs = (nkwonlyargs ? asdl_seq_new(nkwonlyargs, c->c_arena) : NULL); if (!kwonlyargs && nkwonlyargs) - goto error; + return NULL; posdefaults = (nposdefaults ? asdl_seq_new(nposdefaults, c->c_arena) : NULL); if (!posdefaults && nposdefaults) - goto error; + return NULL; /* The length of kwonlyargs and kwdefaults are same since we set NULL as default for keyword only argument w/o default - we have sequence data structure, but no dictionary */ kwdefaults = (nkwonlyargs ? asdl_seq_new(nkwonlyargs, c->c_arena) : NULL); if (!kwdefaults && nkwonlyargs) - goto error; + return NULL; if (nposargs + nkwonlyargs > 255) { ast_error(n, "more than 255 arguments"); @@ -816,7 +816,7 @@ ast_for_arguments(struct compiling *c, const node *n) if (i + 1 < NCH(n) && TYPE(CHILD(n, i + 1)) == EQUAL) { expr_ty expression = ast_for_expr(c, CHILD(n, i + 2)); if (!expression) - goto error; + return NULL; assert(posdefaults != NULL); asdl_seq_SET(posdefaults, j++, expression); i += 2; @@ -825,11 +825,11 @@ ast_for_arguments(struct compiling *c, const node *n) else if (found_default) { ast_error(n, "non-default argument follows default argument"); - goto error; + return NULL; } arg = compiler_arg(c, ch); if (!arg) - goto error; + return NULL; asdl_seq_SET(posargs, k++, arg); i += 2; /* the name and the comma */ break; @@ -837,7 +837,7 @@ ast_for_arguments(struct compiling *c, const node *n) if (i+1 >= NCH(n)) { ast_error(CHILD(n, i), "named arguments must follow bare *"); - goto error; + return NULL; } ch = CHILD(n, i+1); /* tfpdef or COMMA */ if (TYPE(ch) == COMMA) { @@ -845,7 +845,7 @@ ast_for_arguments(struct compiling *c, const node *n) i += 2; /* now follows keyword only arguments */ res = handle_keywordonly_args(c, n, i, kwonlyargs, kwdefaults); - if (res == -1) goto error; + if (res == -1) return NULL; i = res; /* res has new position to process */ } else { @@ -855,6 +855,8 @@ ast_for_arguments(struct compiling *c, const node *n) if (NCH(ch) > 1) { /* there is an annotation on the vararg */ varargannotation = ast_for_expr(c, CHILD(ch, 2)); + if (!varargannotation) + return NULL; } i += 3; if (i < NCH(n) && (TYPE(CHILD(n, i)) == tfpdef @@ -862,7 +864,7 @@ ast_for_arguments(struct compiling *c, const node *n) int res = 0; res = handle_keywordonly_args(c, n, i, kwonlyargs, kwdefaults); - if (res == -1) goto error; + if (res == -1) return NULL; i = res; /* res has new position to process */ } } @@ -874,24 +876,22 @@ ast_for_arguments(struct compiling *c, const node *n) if (NCH(ch) > 1) { /* there is an annotation on the kwarg */ kwargannotation = ast_for_expr(c, CHILD(ch, 2)); + if (!kwargannotation) + return NULL; } if (!kwarg) - goto error; + return NULL; i += 3; break; default: PyErr_Format(PyExc_SystemError, "unexpected node in varargslist: %d @ %d", TYPE(ch), i); - goto error; + return NULL; } } return arguments(posargs, vararg, varargannotation, kwonlyargs, kwarg, kwargannotation, posdefaults, kwdefaults, c->c_arena); - error: - Py_XDECREF(vararg); - Py_XDECREF(kwarg); - return NULL; } static expr_ty @@ -976,9 +976,9 @@ ast_for_decorators(struct compiling *c, const node *n) for (i = 0; i < NCH(n); i++) { d = ast_for_decorator(c, CHILD(n, i)); - if (!d) - return NULL; - asdl_seq_SET(decorator_seq, i, d); + if (!d) + return NULL; + asdl_seq_SET(decorator_seq, i, d); } return decorator_seq; } @@ -1004,7 +1004,7 @@ ast_for_funcdef(struct compiling *c, const node *n, asdl_seq *decorator_seq) if (TYPE(CHILD(n, name_i+2)) == RARROW) { returns = ast_for_expr(c, CHILD(n, name_i + 3)); if (!returns) - return NULL; + return NULL; name_i += 2; } body = ast_for_suite(c, CHILD(n, name_i + 3)); @@ -2152,11 +2152,10 @@ ast_for_expr_stmt(struct compiling *c, const node *n) return NULL; } e = ast_for_testlist(c, ch); - - /* set context to assign */ if (!e) return NULL; + /* set context to assign */ if (!set_context(c, e, Store, CHILD(n, i))) return NULL; @@ -2957,6 +2956,8 @@ ast_for_with_item(struct compiling *c, const node *n, asdl_seq *content) REQ(n, with_item); context_expr = ast_for_expr(c, CHILD(n, 0)); + if (!context_expr) + return NULL; if (NCH(n) == 3) { optional_vars = ast_for_expr(c, CHILD(n, 2)); |