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PEP 308 implementation, including minor refdocs and some testcases. It

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breaks the parser module, because it adds the if/else construct as well as
two new grammar rules for backward compatibility. If no one else fixes
parsermodule, I guess I'll go ahead and fix it later this week.

The TeX code was checked with texcheck.py, but not rendered. There is
actually a slight incompatibility:

>>> (x for x in lambda:0)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: iteration over non-sequence

changes into

>>> (x for x in lambda: 0)
  File "<stdin>", line 1
    (x for x in lambda: 0)
                     ^
SyntaxError: invalid syntax

Since there's no way the former version can be useful, it's probably a
bugfix ;)
This commit is contained in:
Thomas Wouters 2006-02-27 00:24:13 +00:00
parent d3a5f53a27
commit dca3b9c797
11 changed files with 878 additions and 642 deletions
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16
Include/Python-ast.h
View file

@ -175,10 +175,10 @@ struct _stmt {
struct _expr {
enum { BoolOp_kind=1, BinOp_kind=2, UnaryOp_kind=3, Lambda_kind=4,
Dict_kind=5, ListComp_kind=6, GeneratorExp_kind=7, Yield_kind=8,
Compare_kind=9, Call_kind=10, Repr_kind=11, Num_kind=12,
Str_kind=13, Attribute_kind=14, Subscript_kind=15, Name_kind=16,
List_kind=17, Tuple_kind=18 } kind;
IfExp_kind=5, Dict_kind=6, ListComp_kind=7, GeneratorExp_kind=8,
Yield_kind=9, Compare_kind=10, Call_kind=11, Repr_kind=12,
Num_kind=13, Str_kind=14, Attribute_kind=15, Subscript_kind=16,
Name_kind=17, List_kind=18, Tuple_kind=19 } kind;
union {
struct {
boolop_ty op;
@ -201,6 +201,12 @@ struct _expr {
expr_ty body;
} Lambda;
struct {
expr_ty test;
expr_ty body;
expr_ty orelse;
} IfExp;
struct {
asdl_seq *keys;
asdl_seq *values;
@ -371,6 +377,8 @@ expr_ty BinOp(expr_ty left, operator_ty op, expr_ty right, int lineno, PyArena
*arena);
expr_ty UnaryOp(unaryop_ty op, expr_ty operand, int lineno, PyArena *arena);
expr_ty Lambda(arguments_ty args, expr_ty body, int lineno, PyArena *arena);
expr_ty IfExp(expr_ty test, expr_ty body, expr_ty orelse, int lineno, PyArena
*arena);
expr_ty Dict(asdl_seq * keys, asdl_seq * values, int lineno, PyArena *arena);
expr_ty ListComp(expr_ty elt, asdl_seq * generators, int lineno, PyArena
*arena);