Mercurial > cpython-lru_cache-weakref

diff Include/Python-ast.h @ 40965:30e5cb3a55ac

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Provisional implementation of PEP 3104. Add nonlocal_stmt to Grammar and Nonlocal node to AST. They both parallel the definitions for globals. The symbol table treats variables declared as nonlocal just like variables that are free implicitly. This change is missing the language spec changes, but makes some decisions about what the spec should say via the unittests. The PEP is silent on a number of decisions, so we should review those before claiming that nonlocal is complete. Thomas Wouters made the grammer and ast changes. Jeremy Hylton added the symbol table changes and the tests. Pete Shinners and Neal Norwitz helped review the code.
author Jeremy Hylton <jeremy@alum.mit.edu>
date Tue, 27 Feb 2007 06:50:52 +0000
parents b58a4374ac21
children 19f7ff443718
line wrap: on
line diff
--- a/Include/Python-ast.h	Tue Feb 27 06:26:14 2007 +0000
+++ b/Include/Python-ast.h	Tue Feb 27 06:50:52 2007 +0000
@@ -66,7 +66,8 @@
                   While_kind=8, If_kind=9, With_kind=10, Raise_kind=11,
                   TryExcept_kind=12, TryFinally_kind=13, Assert_kind=14,
                   Import_kind=15, ImportFrom_kind=16, Global_kind=17,
-                  Expr_kind=18, Pass_kind=19, Break_kind=20, Continue_kind=21};
+                  Nonlocal_kind=18, Expr_kind=19, Pass_kind=20, Break_kind=21,
+                  Continue_kind=22};
 struct _stmt {
         enum _stmt_kind kind;
         union {
@@ -165,6 +166,10 @@
                 } Global;
                 
                 struct {
+                        asdl_seq *names;
+                } Nonlocal;
+                
+                struct {
                         expr_ty value;
                 } Expr;
                 
@@ -422,6 +427,9 @@
 #define Global(a0, a1, a2, a3) _Py_Global(a0, a1, a2, a3)
 stmt_ty _Py_Global(asdl_seq * names, int lineno, int col_offset, PyArena
                    *arena);
+#define Nonlocal(a0, a1, a2, a3) _Py_Nonlocal(a0, a1, a2, a3)
+stmt_ty _Py_Nonlocal(asdl_seq * names, int lineno, int col_offset, PyArena
+                     *arena);
 #define Expr(a0, a1, a2, a3) _Py_Expr(a0, a1, a2, a3)
 stmt_ty _Py_Expr(expr_ty value, int lineno, int col_offset, PyArena *arena);
 #define Pass(a0, a1, a2) _Py_Pass(a0, a1, a2)