--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/symbian-qemu-0.9.1-12/python-2.6.1/Python/future.c Fri Jul 31 15:01:17 2009 +0100
@@ -0,0 +1,140 @@
+#include "Python.h"
+#include "Python-ast.h"
+#include "node.h"
+#include "token.h"
+#include "graminit.h"
+#include "code.h"
+#include "compile.h"
+#include "symtable.h"
+
+#define UNDEFINED_FUTURE_FEATURE "future feature %.100s is not defined"
+
+static int
+future_check_features(PyFutureFeatures *ff, stmt_ty s, const char *filename)
+{
+ int i;
+ asdl_seq *names;
+
+ assert(s->kind == ImportFrom_kind);
+
+ names = s->v.ImportFrom.names;
+ for (i = 0; i < asdl_seq_LEN(names); i++) {
+ alias_ty name = (alias_ty)asdl_seq_GET(names, i);
+ const char *feature = PyString_AsString(name->name);
+ if (!feature)
+ return 0;
+ if (strcmp(feature, FUTURE_NESTED_SCOPES) == 0) {
+ continue;
+ } else if (strcmp(feature, FUTURE_GENERATORS) == 0) {
+ continue;
+ } else if (strcmp(feature, FUTURE_DIVISION) == 0) {
+ ff->ff_features |= CO_FUTURE_DIVISION;
+ } else if (strcmp(feature, FUTURE_ABSOLUTE_IMPORT) == 0) {
+ ff->ff_features |= CO_FUTURE_ABSOLUTE_IMPORT;
+ } else if (strcmp(feature, FUTURE_WITH_STATEMENT) == 0) {
+ ff->ff_features |= CO_FUTURE_WITH_STATEMENT;
+ } else if (strcmp(feature, FUTURE_PRINT_FUNCTION) == 0) {
+ ff->ff_features |= CO_FUTURE_PRINT_FUNCTION;
+ } else if (strcmp(feature, FUTURE_UNICODE_LITERALS) == 0) {
+ ff->ff_features |= CO_FUTURE_UNICODE_LITERALS;
+ } else if (strcmp(feature, "braces") == 0) {
+ PyErr_SetString(PyExc_SyntaxError,
+ "not a chance");
+ PyErr_SyntaxLocation(filename, s->lineno);
+ return 0;
+ } else {
+ PyErr_Format(PyExc_SyntaxError,
+ UNDEFINED_FUTURE_FEATURE, feature);
+ PyErr_SyntaxLocation(filename, s->lineno);
+ return 0;
+ }
+ }
+ return 1;
+}
+
+static int
+future_parse(PyFutureFeatures *ff, mod_ty mod, const char *filename)
+{
+ int i, found_docstring = 0, done = 0, prev_line = 0;
+
+ static PyObject *future;
+ if (!future) {
+ future = PyString_InternFromString("__future__");
+ if (!future)
+ return 0;
+ }
+
+ if (!(mod->kind == Module_kind || mod->kind == Interactive_kind))
+ return 1;
+
+ /* A subsequent pass will detect future imports that don't
+ appear at the beginning of the file. There's one case,
+ however, that is easier to handle here: A series of imports
+ joined by semi-colons, where the first import is a future
+ statement but some subsequent import has the future form
+ but is preceded by a regular import.
+ */
+
+
+ for (i = 0; i < asdl_seq_LEN(mod->v.Module.body); i++) {
+ stmt_ty s = (stmt_ty)asdl_seq_GET(mod->v.Module.body, i);
+
+ if (done && s->lineno > prev_line)
+ return 1;
+ prev_line = s->lineno;
+
+ /* The tests below will return from this function unless it is
+ still possible to find a future statement. The only things
+ that can precede a future statement are another future
+ statement and a doc string.
+ */
+
+ if (s->kind == ImportFrom_kind) {
+ if (s->v.ImportFrom.module == future) {
+ if (done) {
+ PyErr_SetString(PyExc_SyntaxError,
+ ERR_LATE_FUTURE);
+ PyErr_SyntaxLocation(filename,
+ s->lineno);
+ return 0;
+ }
+ if (!future_check_features(ff, s, filename))
+ return 0;
+ ff->ff_lineno = s->lineno;
+ }
+ else
+ done = 1;
+ }
+ else if (s->kind == Expr_kind && !found_docstring) {
+ expr_ty e = s->v.Expr.value;
+ if (e->kind != Str_kind)
+ done = 1;
+ else
+ found_docstring = 1;
+ }
+ else
+ done = 1;
+ }
+ return 1;
+}
+
+
+PyFutureFeatures *
+PyFuture_FromAST(mod_ty mod, const char *filename)
+{
+ PyFutureFeatures *ff;
+
+ ff = (PyFutureFeatures *)PyObject_Malloc(sizeof(PyFutureFeatures));
+ if (ff == NULL) {
+ PyErr_NoMemory();
+ return NULL;
+ }
+ ff->ff_features = 0;
+ ff->ff_lineno = -1;
+
+ if (!future_parse(ff, mod, filename)) {
+ PyObject_Free(ff);
+ return NULL;
+ }
+ return ff;
+}