Commit Graph

432 Commits

Author SHA1 Message Date
Jeremy Hylton 778e265462 Fix SF buf #480096: Assign to __debug__ still allowed
Easy enough to catch assignment in the compiler.  The perverse user
can still change the value of __debug__, but that may be the least he
can do.
2001-11-09 19:50:08 +00:00
Tim Peters 8c5e41559c Part of SF bug #478003 possible memory leaks in err handling.
PyNode_CompileSymtable:  if symtable_init() fails, free the memory
allocated for the PyFutureFeatures struct.
2001-11-04 19:26:58 +00:00
Jeremy Hylton 961dfe0d85 Fix for SF bug [ #471928 ] global made w/nested list comprehensions
The symbol table pass didn't have an explicit case for the list_iter
node which is used only for a nested list comprehension.  As a result,
the target of the list comprehension was treated as a use instead of
an assignment.  Fix is to add a case to symtable_node() to handle
list_iter.

Also, rework and document a couple of the subtler implementation
issues in the symbol table pass.  The symtable_node() switch statement
depends on falling through the last several cases, in order to handle
some of the more complicated nodes like atom.  Add a comment
explaining the behavior before the first fall through case.  Add a
comment /* fall through */ at the end of case so that it is explicitly
marked as such.

Move the for_stmt case out of the fall through logic, which simplifies
both for_stmt and default.  (The default used the local variable start
to skip the first three nodes of a for_stmt when it fell through.)

Rename the flag argument to symtable_assign() to def_flag and add a
comment explaining its use:

   The third argument to symatble_assign() is a flag to be passed to
   symtable_add_def() if it is eventually called.  The flag is useful
   to specify the particular type of assignment that should be
   recorded, e.g. an assignment caused by import.
2001-10-18 16:15:10 +00:00
Jeremy Hylton 93a569d634 Fix computation of stack depth for classdef and closures.
Also minor tweaks to internal routines.
Use PyCF_MASK instead of explicit list of flags.

For the MAKE_CLOSURE opcode, the number of items popped off the stack
depends on both the oparg and the number of free variables for the
code object.  Fix the code so it accounts for the free variables.

In com_classdef(), record an extra pop to account for the STORE call
after the BUILD_CLASS.

Get rid of some commented out debugging code in com_push() and
com_pop().

Factor string resize logic into helper routine com_check_size().

In com_addbyte(), remove redudant if statement after assert.  (They
test the same condition.)

In several routines, use string macros instead of string functions.
2001-10-17 13:22:22 +00:00
Guido van Rossum 1c917072ca Very subtle syntax change: in a list comprehension, the testlist in
"for <var> in <testlist> may no longer be a single test followed by
a comma.  This solves SF bug #431886.  Note that if the testlist
contains more than one test, a trailing comma is still allowed, for
maximum backward compatibility; but this example is not:

    [(x, y) for x in range(10), for y in range(10)]
                              ^

The fix involved creating a new nonterminal 'testlist_safe' whose
definition doesn't allow the trailing comma if there's only one test:

    testlist_safe: test [(',' test)+ [',']]
2001-10-15 15:44:05 +00:00
Guido van Rossum 6f7993765a Add optional docstrings to member descriptors. For backwards
compatibility, this required all places where an array of "struct
memberlist" structures was declared that is referenced from a type's
tp_members slot to change the type of the structure to PyMemberDef;
"struct memberlist" is now only used by old code that still calls
PyMember_Get/Set.  The code in PyObject_GenericGetAttr/SetAttr now
calls the new APIs PyMember_GetOne/SetOne, which take a PyMemberDef
argument.

As examples, I added actual docstrings to the attributes of a few
types: file, complex, instance method, super, and xxsubtype.spamlist.

Also converted the symtable to new style getattr.
2001-09-20 20:46:19 +00:00
Jeremy Hylton c785f4841c Supply code objects a new-style tp_members slot and tp_getattr impl.
The chief effects are to make dir() do something useful and supply
them with an __class__.
2001-09-14 20:08:07 +00:00
Tim Peters 51e2651b29 SF bug [#458941] Looks like a unary minus bug.
com_factor():  when a unary minus is attached to a float or imaginary zero,
don't optimize the UNARY_MINUS opcode away:  the const dict can't
distinguish between +0.0 and -0.0, so ended up treating both like the
first one added to it.  Optimizing UNARY_PLUS away isn't a problem.

(BTW, I already uploaded the 2.2a3 Windows installer, and this isn't
important enough to delay the release.)
2001-09-07 08:45:55 +00:00
Fred Drake 14ef244dfe When re-writing a factor containing a unary negation of a literal, only
affect nodes without another operator.  This was causing negated
exponentiations to drop the exponentiation.  This closes SF bug #456756.
2001-08-30 18:53:25 +00:00
Sjoerd Mullender a2c2ae62df Removed unreachable goto statement to silence SGI compiler. 2001-08-30 14:06:45 +00:00
Jeremy Hylton 71b6af91d3 If an integer constant can't be generated from an integer literal
because of overflow, generate a long instead.
2001-08-27 19:45:25 +00:00
Martin v. Löwis 339d0f720e Patch #445762: Support --disable-unicode
- Do not compile unicodeobject, unicodectype, and unicodedata if Unicode is disabled
- check for Py_USING_UNICODE in all places that use Unicode functions
- disables unicode literals, and the builtin functions
- add the types.StringTypes list
- remove Unicode literals from most tests.
2001-08-17 18:39:25 +00:00
Jeremy Hylton 481081e369 Fix SF bug [ #450909 ] __future__.division fails at prompt
When code is compiled and compiler flags are passed in, be sure to
update cf_flags with any features defined by future statements in the
compiled code.
2001-08-14 20:01:59 +00:00
Jeremy Hylton d5e5a2aa28 SF Patch [ 429024 ] deal with some unary ops at compile time
Revised version of Fred's patch, including support for ~ operator.

If the unary +, -, or ~ operator is applied to a constant, don't
generate a UNARY_xxx opcode. Just store the approriate value as a
constant.  If the value is negative, extend the string containing the
constant and insert a negative in the 0th position.

For ~, compute the inverse of int and longs and use them directly, but
be prepared to generate code for all other possibilities (invalid
numbers, floats, complex).
2001-08-12 01:54:38 +00:00
Jeremy Hylton 1abf610b15 Remove st_nested_scopes from struct symtable,
because nested scopes are always enabled.

(Accidentally checked in one small change along this path yesterday,
wreaking havoc in the Windows build.)
2001-08-11 21:51:24 +00:00
Tim Peters ff1f8521ac st_nested_scopes was uninitialized trash. Jeremy should fix in a better
way; see code comments.
2001-08-11 01:06:35 +00:00
Jeremy Hylton b857ba261f Refactor future feature handling
Replace uses of PyCF_xxx with CO_xxx.

Replace individual feature slots in PyFutureFeatures with single
bitmask ff_features.

When flags must be transfered among the three parts of the interpreter
that care about them -- the pythonrun layer, the compiler, and the
future feature parser -- can simply or (|) the definitions.
2001-08-10 21:41:33 +00:00
Guido van Rossum 4668b000a1 Implement PEP 238 in its (almost) full glory.
This introduces:

- A new operator // that means floor division (the kind of division
  where 1/2 is 0).

- The "future division" statement ("from __future__ import division)
  which changes the meaning of the / operator to implement "true
  division" (where 1/2 is 0.5).

- New overloadable operators __truediv__ and __floordiv__.

- New slots in the PyNumberMethods struct for true and floor division,
  new abstract APIs for them, new opcodes, and so on.

I emphasize that without the future division statement, the semantics
of / will remain unchanged until Python 3.0.

Not yet implemented are warnings (default off) when / is used with int
or long arguments.

This has been on display since 7/31 as SF patch #443474.

Flames to /dev/null.
2001-08-08 05:00:18 +00:00
Jeremy Hylton 6a53bd8582 Another bug fix for recent import * warning (caught by Thomas Wouters)
Only return if symtable_warn() returns -1, indicating that the warning
was turned into an error.
2001-08-06 20:34:25 +00:00
Jeremy Hylton ba591bf3bd Fix error message for import * in function/class scope 2001-08-06 19:55:17 +00:00
Jeremy Hylton 8a6f295303 Fix SF bug [ #445474 ] warn about import * inside functions
Reported by the Man himself.
2001-08-06 19:45:40 +00:00
Guido van Rossum e16c7aee4b jcompile(): inherit the CO_GENERATOR_ALLOWED flag from the 'base'
compiling struct.
2001-07-16 16:53:08 +00:00
Tim Peters 5ba5866281 Part way to allowing "from __future__ import generators" to communicate
that info to code dynamically compiled *by* code compiled with generators
enabled.  Doesn't yet work because there's still no way to tell the parser
that "yield" is OK (unlike nested_scopes, the parser has its fingers in
this too).
Replaced PyEval_GetNestedScopes by a more-general
PyEval_MergeCompilerFlags.  Perhaps I should not have?  I doubted it was
*intended* to be part of the public API, so just did.
2001-07-16 02:29:45 +00:00
Tim Peters 08a898f85d Another "if 0:" hack, this time to complain about otherwise invisible
"return expr" instances in generators (which latter may be generators
due to otherwise invisible "yield" stmts hiding in "if 0" blocks).
This was fun the first time, but this has gotten truly ugly now.
2001-06-28 01:52:22 +00:00
Tim Peters b6c3ceae79 SF bug #436207: "if 0: yield x" is ignored.
Not anymore <wink>.  Pure hack.  Doesn't fix any other "if 0:" glitches.
2001-06-26 03:36:28 +00:00
Tim Peters ad1a18b78e Change the semantics of "return" in generators, as discussed on the
Iterators list and Python-Dev; e.g., these all pass now:

def g1():
    try:
        return
    except:
        yield 1
assert list(g1()) == []

def g2():
    try:
        return
    finally:
        yield 1
assert list(g2()) == [1]

def g3():
    for i in range(3):
        yield None
    yield None
assert list(g3()) == [None] * 4

compile.c:  compile_funcdef and com_return_stmt:  Just van Rossum's patch
to compile the same code for "return" regardless of function type (this
goes back to the previous scheme of returning Py_None).

ceval.c:  gen_iternext:  take a return (but not a yield) of Py_None as
meaning the generator is exhausted.
2001-06-23 06:19:16 +00:00
Tim Peters 95c80f8439 Disallow 'yield' in a 'try' block when there's a 'finally' clause.
Derived from Thomas Wouters's patch on the Iterators list, but doesn't
try to read c->c_block[c->c_nblocks].
2001-06-23 02:07:08 +00:00
Tim Peters 5ca576ed0a Merging the gen-branch into the main line, at Guido's direction. Yay!
Bugfix candidate in inspect.py:  it was referencing "self" outside of
a method.
2001-06-18 22:08:13 +00:00
Tim Peters 2a7f384122 SF bug 430991: wrong co_lnotab
Armin Rigo pointed out that the way the line-# table got built didn't work
for lines generating more than 255 bytes of bytecode.  Fixed as he
suggested, plus corresponding changes to pyassem.py, plus added some
long overdue docs about this subtle table to compile.c.

Bugfix candidate (line numbers may be off in tracebacks under -O).
2001-06-09 09:26:21 +00:00
Tim Peters 5ac946c697 SF patch #416249, from Mark Favas: 2.1c1 compile: unused vrbl cleanup 2001-05-09 18:53:51 +00:00
Jeremy Hylton 9c90105cb0 Several small changes. Mostly reformatting, adding parens.
Check for free in class and method only if nested scopes are enabled.

Add assertion to verify that no free variables occur when nested
scopes are disabled.

XXX When should nested scopes by made non-optional on the trunk?
2001-05-08 04:12:34 +00:00
Jeremy Hylton ddc4fd03b1 Fix 2.1 nested scopes crash reported by Evan Simpson
The new test case demonstrates the bug.  Be more careful in
symtable_resolve_free() to add a var to cells or frees only if it
won't be added under some other rule.

XXX Add new assertion that will catch this bug.
2001-04-27 02:29:40 +00:00
Guido van Rossum 59d1d2b434 Iterators phase 1. This comprises:
new slot tp_iter in type object, plus new flag Py_TPFLAGS_HAVE_ITER
new C API PyObject_GetIter(), calls tp_iter
new builtin iter(), with two forms: iter(obj), and iter(function, sentinel)
new internal object types iterobject and calliterobject
new exception StopIteration
new opcodes for "for" loops, GET_ITER and FOR_ITER (also supported by dis.py)
new magic number for .pyc files
new special method for instances: __iter__() returns an iterator
iteration over dictionaries: "for x in dict" iterates over the keys
iteration over files: "for x in file" iterates over lines

TODO:

documentation
test suite
decide whether to use a different way to spell iter(function, sentinal)
decide whether "for key in dict" is a good idea
use iterators in map/filter/reduce, min/max, and elsewhere (in/not in?)
speed tuning (make next() a slot tp_next???)
2001-04-20 19:13:02 +00:00
Guido van Rossum f68d8e52e7 Make some private symbols static. 2001-04-14 17:55:09 +00:00
Jeremy Hylton a830b3859b Warn when assigning to __debug__ instead of raising an error. 2001-04-09 16:07:59 +00:00
Jeremy Hylton 897b82123d Make it illegal to assign to __debug__ as per Guido's request. 2001-03-23 14:08:38 +00:00
Jeremy Hylton 2e2cded1b5 Set the line number correctly for a nested function with an exec or
import *.  Mark the offending stmt rather than the function def line.
2001-03-22 03:57:58 +00:00
Jeremy Hylton 280e6bd742 Make error messages clearer for illegal combinations of nested
functions and import */exec.
2001-03-22 03:51:05 +00:00
Jeremy Hylton 061d106a0f If a code object is compiled with nested scopes, define the CO_NESTED flag.
Add PyEval_GetNestedScopes() which returns a non-zero value if the
code for the current interpreter frame has CO_NESTED defined.
2001-03-22 02:32:48 +00:00
Jeremy Hylton ded4bd776f Update PyNode_CompileSymtable() to understand future statements 2001-03-21 19:01:33 +00:00
Jeremy Hylton 220ae7c0bf Fix PyFrame_FastToLocals() and counterpart to deal with cells and
frees.  Note there doesn't seem to be any way to test LocalsToFast(),
because the instructions that trigger it are illegal in nested scopes
with free variables.

Fix allocation strategy for cells that are also formal parameters.
Instead of emitting LOAD_FAST / STORE_DEREF pairs for each parameter,
have the argument handling code in eval_code2() do the right thing.

A side-effect of this change is that cell variables that are also
arguments are listed at the front of co_cellvars in the order they
appear in the argument list.
2001-03-21 16:43:47 +00:00
Jeremy Hylton ce7ef599d2 Fixup handling of free variables in methods when the class scope also
has a binding for the name.  The fix is in two places:

  - in symtable_update_free_vars, ignore a global stmt in a class scope
  - in symtable_load_symbols, add extra handling for names that are
    defined at class scope and free in a method

Closes SF bug 407800
2001-03-20 00:25:43 +00:00
Jeremy Hylton 23b4227ec8 Fix crashes in nested list comprehensions
SF bugs 409230 and 407800

Also remove bogus list comp code from symtable_assign().
2001-03-19 20:38:06 +00:00
Guido van Rossum 207fda61a5 Refactored the warning-issuing code more.
Made sure that the warnings issued by symtable_check_unoptimized()
(about import * and exec) contain the proper filename and line number,
and are transformed into SyntaxError exceptions with -Werror.
2001-03-02 03:30:41 +00:00
Jeremy Hylton 9f324e964e Useful future statement support for the interactive interpreter
(Also remove warning about module-level global decl, because we can't
distinguish from code passed to exec.)

Define PyCompilerFlags type contains a single element,
cf_nested_scopes, that is true if a nested scopes future statement has
been entered at the interactive prompt.

New API functions:
    PyNode_CompileFlags()
    PyRun_InteractiveOneFlags()
    -- same as their non Flags counterparts except that the take an
       optional PyCompilerFlags pointer

compile.c: In jcompile() use PyCompilerFlags argument.  If
    cf_nested_scopes is true, compile code with nested scopes.  If it
    is false, but the code has a valid future nested scopes statement,
    set it to true.

pythonrun.c: Create a new PyCompilerFlags object in
    PyRun_InteractiveLoop() and thread it through to
    PyRun_InteractiveOneFlags().
2001-03-01 22:59:14 +00:00
Jeremy Hylton 7889107be7 Fix core dump in example from Samuele Pedroni:
from __future__ import nested_scopes
x=7
def f():
    x=1
    def g():
        global x
        def i():
            def h():
                return x
            return h()
        return i()
    return g()

print f()
print x

This kind of code didn't work correctly because x was treated as free
in i, leading to an attempt to load x in g to make a closure for i.

Solution is to make global decl apply to nested scopes unless their is
an assignment.  Thus, x in h is global.
2001-03-01 06:09:34 +00:00
Jeremy Hylton 5125773ff1 Don't add global names to st->st_global if we're already iterating
over the elements of st->st_global!
2001-03-01 00:42:55 +00:00
Jeremy Hylton 3dd5ad3b4f undo introduction of st_global_star 2001-02-28 23:47:55 +00:00
Jeremy Hylton c176132d63 Warn about global statement at the module level.
Do better accounting for global variables.
2001-02-28 23:44:45 +00:00
Jeremy Hylton 4419ac1a97 Add warning/error handlin for problematic nested scopes cases as
described in PEP 227.

symtable_check_unoptimized() warns about import * and exec with "in"
when it is used in a function that contains a nested function with
free variables.  Warnings are issued unless nested scopes are in
effect, in which case these are SyntaxErrors.

symtable_check_shadow() warns about assignments in a function scope
that shadow free variables defined in a nested scope.  This will
always generate a warning -- and will behave differently with nested
scopes than without.

Restore full checking for free vars in children, even when nested
scopes are not enabled.  This is needed to support warnings for
shadowing.

Change symtable_warn() to return an int-- the return value of
PyErr_WarnExplicit.

Sundry cleanup: Remove commented out code.  Break long lines.
2001-02-28 22:54:51 +00:00
Guido van Rossum ee34ac124a Let's have some sanity. Introduce a helper to issue a symbol table
warning.
2001-02-28 22:08:12 +00:00
Guido van Rossum 0bba7f83f2 Use the new PyErr_WarnExplicit() API to issue better warnings for
global after assign / use.

Note: I'm not updating the PyErr_Warn() call for import * / exec
combined with a function, because I can't trigger it with an example.
Jeremy, just follow the example of the call to PyErr_WarnExplicit()
that I *did* include.
2001-02-28 21:55:38 +00:00
Jeremy Hylton ad3d3f2f3f Improve SyntaxErrors for bad future statements. Set file and location
for errors raised in future.c.

Move some helper functions from compile.c to errors.c and make them
API functions: PyErr_SyntaxLocation() and PyErr_ProgramText().
2001-02-28 17:47:12 +00:00
Jeremy Hylton 9f1b9932b8 Print the offending line of code in the traceback for SyntaxErrors
raised by the compiler.

XXX For now, text entered into the interactive intepreter is not
printed in the traceback.

Inspired by a patch from Roman Sulzhyk

compile.c:

Add helper fetch_program_text() that opens a file and reads until it
finds the specified line number.  The code is a near duplicate of
similar code in traceback.c.

Modify com_error() to pass two arguments to SyntaxError constructor,
where the second argument contains the offending text when possible.

Modify set_error_location(), now used only by the symtable pass, to
set the text attribute on existing exceptions.

pythonrun.c:

Change parse_syntax_error() to continue of the offset attribute of a
SyntaxError is None.  In this case, it sets offset to -1.

Move code from PyErr_PrintEx() into helper function
print_error_text().  In the helper, only print the caret for a
SyntaxError if offset > 0.
2001-02-28 07:07:43 +00:00
Jeremy Hylton 39e2f3f824 Presumed correct compiler pass for future statements
XXX still need to integrate into symtable API

compile.h: Remove ff_n_simple_stmt; obsolete.

           Add ff_found_docstring used internally to skip one and only
           one string at the beginning of a module.

compile.c: Add check for from __future__ imports to far into the file.

 	   In symtable_global() check for -1 returned from
	   symtable_lookup(), which signifies name not defined.

	   Add missing DECERF in symtable_add_def.

           Free c->c_future.

future.c:  Add special handling for multiple statements joined on a
	   single line using one or more semicolons; this form can
           include an illegal future statement that would otherwise be
           hard to detect.

	   Add support for detecting and skipping doc strings.
2001-02-28 01:58:08 +00:00
Jeremy Hylton 4db62b1e14 Improved __future__ parser; still more to do
Makefile.pre.in: add target future.o

Include/compile.h: define PyFutureFeaters and PyNode_Future()
                   add c_future slot to struct compiling

Include/symtable.h: add st_future slot to struct symtable

Python/future.c: implementation of PyNode_Future()

Python/compile.c: use PyNode_Future() for nested_scopes support

Python/symtable.c: include compile.h to pick up PyFutureFeatures decl
2001-02-27 19:07:02 +00:00
Jeremy Hylton be77cf7d57 Add warnings about undefined "global"
SF bug #233532

XXX Can't figure out how to write test cases that work with warnings
2001-02-27 05:15:57 +00:00
Jeremy Hylton 29906eef3a Preliminary support for future nested scopes
compile.h: #define NESTED_SCOPES_DEFAULT 0 for Python 2.1
           __future__ feature name: "nested_scopes"

symtable.h: Add st_nested_scopes slot.  Define flags to track exec and
    import star.

Lib/test/test_scope.py: requires nested scopes

compile.c: Fiddle with error messages.

    Reverse the sense of ste_optimized flag on
    PySymtableEntryObjects.  If it is true, there is an optimization
    conflict.

    Modify get_ref_type to respect st_nested_scopes flags.

    Refactor symtable_load_symbols() into several smaller functions,
    which use struct symbol_info to share variables.  In new function
    symtable_update_flags(), raise an error or warning for import * or
    bare exec that conflicts with nested scopes.  Also, modify handle
    for free variables to respect st_nested_scopes flag.

    In symtable_init() assign st_nested_scopes flag to
    NESTED_SCOPES_DEFAULT (defined in compile.h).

    Add preliminary and often incorrect implementation of
    symtable_check_future().

    Add symtable_lookup() helper for future use.
2001-02-27 04:23:34 +00:00
Tim Peters 1e542110f9 Shuffle premature decref; nuke unreachable code block.
Fixes the "debug-build -O test_builtin.py and no test_b2.pyo" crash just
discussed on Python-Dev.
2001-02-23 22:23:53 +00:00
Barry Warsaw 0372af754e symtable_update_free_vars(), symtable_undo_free(),
symtable_enter_scope(): Removed some unnecessary backslashes at the
end of lines.  C != Python. :)
2001-02-23 18:22:59 +00:00
Jeremy Hylton 74b3bc47df Fix for bug 133489: compiler leaks memory
Two different but related problems:

1. PySymtable_Free() must explicitly DECREF(st->st_cur), which should
always point to the global symtable entry.  This entry is setup by the
first enter_scope() call, but there is never a corresponding
exit_scope() call.

Since each entry has a reference to scopes defined within it, the
missing DECREF caused all symtable entries to be leaked.

2. The leak here masked a separate problem with
PySymtableEntry_New().  When the requested entry was found in
st->st_symbols, the entry was returned without doing an INCREF.

And problem c) The ste_children slot was getting two copies of each
child entry, because it was populating the slot on the first and
second passes.  Now only populate on the first pass.
2001-02-23 17:55:27 +00:00
Jeremy Hylton 2b3f0ca2ac Fix for implicit tuple + default arguments, courtesy of Michael Hudson.
SF patch #103749
2001-02-19 23:52:49 +00:00
Jeremy Hylton 384639f80e When running python -O, do not include blocks defined in asserts in
the symbol table pass.  These blocks were already ignored by the code
gen pass.  Both passes must visit the same set of blocks in the same
order.

Fixes SF buf 132820
2001-02-19 15:50:51 +00:00
Jeremy Hylton 17820c4f1b Tolerate ill-formed trees in symtable_assign(). Fixes SF bug 132510. 2001-02-19 15:33:10 +00:00
Tim Peters 4e30378e80 Bug #132313 error message confusing for assignment in lambda.
They're actually complaining about something more specific, an assignment
in a lambda as an actual argument, so that Python parses the
lambda as if it were a keyword argument.  Like f(lambda x: x[0]=42).
The "lambda x: x[0]" part gets parsed as if it were a keyword, being
bound to 42, and the resulting error msg didn't make much sense.
2001-02-18 04:45:10 +00:00
Tim Peters 3081421d9e Change temp names created by listcomps from [%d] to _[%d], so the one-liner
[k for k in dir() if k[0] != "_"]
can be used to get the non-private names (used to contain "[1]").
2001-02-17 05:30:26 +00:00
Jeremy Hylton d7f393edae In symtable_update_free_vars() do not modify the dictionary while
iterating over it using PyDict_Next().

This bug fix brought to you by the letters b, c, d, g, h, ... and the
reporter Ping.
2001-02-12 16:01:03 +00:00
Jeremy Hylton 6492bf71da SF patch 103589: Fix handling of cell vars that are either * or ** parameters.
(Nick Mathewson)

Remove to XXX comments
2001-02-09 22:55:26 +00:00
Jeremy Hylton cb17ae8b19 Relax the rules for using 'from ... import *' and exec in the presence
of nested functions.  Either is allowed in a function if it contains
no defs or lambdas or the defs and lambdas it contains have no free
variables.  If a function is itself nested and has free variables,
either is illegal.

Revise the symtable to use a PySymtableEntryObject, which holds all
the revelent information for a scope, rather than using a bunch of
st_cur_XXX pointers in the symtable struct.  The changes simplify the
internal management of the current symtable scope and of the stack.

Added new C source file: Python/symtable.c.  (Does the Windows build
process need to be updated?)

As part of these changes, the initial _symtable module interface
introduced in 2.1a2 is replaced.  A dictionary of
PySymtableEntryObjects are returned.
2001-02-09 22:22:18 +00:00
Guido van Rossum cd90c20b62 Reindent a function that was somehow indented by 7 spaces. Also did a
spaces->tab conversion for fields added to struct compiling.
2001-02-09 15:06:42 +00:00
Jeremy Hylton 5acc0c0cfc Fix symbol table pass to generation SyntaxError exceptions that
include the filename and line number.
2001-02-02 20:01:10 +00:00
Jeremy Hylton 4b38da664c Move a bunch of definitions that were internal to compile.c to
symtable.h, so that they can be used by external module.

Improve error handling in symtable_enter_scope(), which return an
error code that went unchecked by most callers. XXX The error handling
in symtable code is sloppy in general.

Modify symtable to record the line number that begins each scope.
This can help to identify which code block is being referred to when
multiple blocks are bound to the same name.

Add st_scopes dict that is used to preserve scope info when
PyNode_CompileSymtable() is called.  Otherwise, this information is
tossed as soon as it is no longer needed.

Add Py_SymtableString() to pythonrun; analogous to Py_CompileString().
2001-02-02 18:19:15 +00:00
Jeremy Hylton bbf10b59d1 add missing DECREF (thanks, Barry) 2001-02-02 02:58:48 +00:00
Jeremy Hylton 3faa52ecc4 Allow 'continue' inside 'try' clause
SF patch 102989 by Thomas Wouters
2001-02-01 22:48:12 +00:00
Jeremy Hylton 483638c9a8 Undo recent change that banned using import to bind a global, as per
discussion on python-dev.  'from mod import *' is still banned except
at the module level.

Fix value for special NOOPT entry in symtable.  Initialze to 0 instead
of None, so that later uses of PyInt_AS_LONG() are valid.  (Bug
reported by Donn Cave.)

replace local REPR macros with PyObject_REPR in object.h
2001-02-01 20:20:45 +00:00
Jeremy Hylton eab156f8eb Enforce two illegal import statements that were outlawed in the
reference manual but not checked: Names bound by import statemants may
not occur in global statements in the same scope. The from ... import *
form may only occur in a module scope.

I guess these changes could break code, but the reference manual
warned about them.

Several other small changes

If a variable is declared global in the nearest enclosing scope of a
free variable, then treat it is a global in the nested scope too.

Get rid of com_mangle and symtable_mangle functions and call mangle
directly.

If errors occur during symtable table creation, return -1 from
symtable_build().

Do not increment st_errors in assignment to lambda, because exception
is not set.

Add extra argument to symtable_assign(); the argument, flag, is ORed
with DEF_LOCAL for each symtable_add_def() call.
2001-01-30 01:24:43 +00:00
Jeremy Hylton 2fdfadf6dd plug leak detected by Barry 2001-01-29 22:42:28 +00:00
Jeremy Hylton 64949cb753 PEP 227 implementation
The majority of the changes are in the compiler.  The mainloop changes
primarily to implement the new opcodes and to pass a function's
closure to eval_code2().  Frames and functions got new slots to hold
the closure.

Include/compile.h
    Add co_freevars and co_cellvars slots to code objects.
    Update PyCode_New() to take freevars and cellvars as arguments
Include/funcobject.h
    Add func_closure slot to function objects.
    Add GetClosure()/SetClosure() functions (and corresponding
    macros) for getting at the closure.
Include/frameobject.h
    PyFrame_New() now takes a closure.
Include/opcode.h
    Add four new opcodes: MAKE_CLOSURE, LOAD_CLOSURE, LOAD_DEREF,
    STORE_DEREF.
    Remove comment about old requirement for opcodes to fit in 7
    bits.
compile.c
    Implement changes to code objects for co_freevars and co_cellvars.

    Modify symbol table to use st_cur_name (string object for the name
    of the current scope) and st_cur_children (list of nested blocks).
    Also define st_nested, which might more properly be called
    st_cur_nested.  Add several DEF_XXX flags to track def-use
    information for free variables.

    New or modified functions of note:
    com_make_closure(struct compiling *, PyCodeObject *)
        Emit LOAD_CLOSURE opcodes as needed to pass cells for free
        variables into nested scope.
    com_addop_varname(struct compiling *, int, char *)
        Emits opcodes for LOAD_DEREF and STORE_DEREF.
    get_ref_type(struct compiling *, char *name)
        Return NAME_CLOSURE if ref type is FREE or CELL
    symtable_load_symbols(struct compiling *)
        Decides what variables are cell or free based on def-use info.
        Can now raise SyntaxError if nested scopes are mixed with
        exec or from blah import *.
    make_scope_info(PyObject *, PyObject *, int, int)
        Helper functions for symtable scope stack.
    symtable_update_free_vars(struct symtable *)
        After a code block has been analyzed, it must check each of
        its children for free variables that are not defined in the
        block.  If a variable is free in a child and not defined in
        the parent, then it is defined by block the enclosing the
        current one or it is a global.  This does the right logic.
    symtable_add_use() is now a macro for symtable_add_def()
    symtable_assign(struct symtable *, node *)
        Use goto instead of for (;;)

    Fixed bug in symtable where name of keyword argument in function
    call was treated as assignment in the scope of the call site. Ex:
        def f():
            g(a=2) # a was considered a local of f

ceval.c
    eval_code2() now take one more argument, a closure.
    Implement LOAD_CLOSURE, LOAD_DEREF, STORE_DEREF, MAKE_CLOSURE>

    Also: When name error occurs for global variable, report that the
    name was global in the error mesage.

Objects/frameobject.c
    Initialize f_closure to be a tuple containing space for cellvars
    and freevars.  f_closure is NULL if neither are present.
Objects/funcobject.c
    Add support for func_closure.
Python/import.c
    Change the magic number.
Python/marshal.c
    Track changes to code objects.
2001-01-25 20:06:59 +00:00
Jeremy Hylton a6ebc4841d Fix bug reported by Ka-Ping Yee: The compiler botched parsing function
parameters that contained both anonymous tuples and *arg or **arg. Ex:
def f(a, (b, c), *d): pass

Fix the symtable_params() to generate names in the right order for
co_varnames slot of code object.  Consider *arg and **arg before the
"complex" names introduced by anonymous tuples.
2001-01-25 17:01:49 +00:00
Jeremy Hylton 5f827f4e9b Visit the initial test element of the listmaker for a list
comprehension.  Fixes bug reported by Tim Peters.
2001-01-23 01:26:20 +00:00
Jeremy Hylton 1113cfc767 prevent symtable_params() from dereferencing off the end of the
varagslist node. based on fix from Thomas Wouters.
2001-01-23 00:50:52 +00:00
Barry Warsaw 174e8018c4 com_init(): My entry into the smallest patch possible category.
(cosmetic whitespace change).
2001-01-22 04:35:57 +00:00
Tim Peters 7f3e4adf60 SF patch #103336: Missing cast. 2001-01-20 05:15:26 +00:00
Jeremy Hylton e36f77814e This patch introduces an extra pass to the compiler that generates a
symbol table for each top-level compilation unit.  The information in
the symbol table allows the elimination of the later optimize() pass;
the bytecode generation emits the correct opcodes.

The current version passes the complete regression test, but may still
contain some bugs.  It's a fairly substantial revision.  The current
code adds an assert() and a test that may lead to a Py_FatalError().
I expect to remove these before 2.1 beta 1.

The symbol table (struct symtable) is described in comments in the
code.

The changes affects the several com_XXX() functions that were used to
emit LOAD_NAME and its ilk.  The primary interface for this bytecode
is now com_addop_varname() which takes a kind and a name, where kind
is one of VAR_LOAD, VAR_STORE, or VAR_DELETE.

There are many other smaller changes:

- The name mangling code is no longer contained in ifdefs.  There are
  two functions that expose the mangling logical: com_mangle() and
  symtable_mangle().

- The com_error() function can accept NULL for its first argument;
  this is useful with is_constant_false() is called during symbol
  table generation.

- The loop index names used by list comprehensions have been changed
  from __1__ to [1], so that they can not be accessed by Python code.

- in com_funcdef(), com_argdefs() is now called before the body of the
  function is compiled.  This provides consistency with com_lambdef()
  and symtable_funcdef().

- Helpers do_pad(), dump(), and DUMP() are added to aid in debugging
  the compiler.
2001-01-19 03:21:30 +00:00
Guido van Rossum fc5ce61abd SF Patch #103250, by pj99: Optimize a strspn() out of startup.
Minor startup speedup: avoid a call to strspn().
2001-01-19 00:24:06 +00:00
Guido van Rossum 83fb073a03 Plug a memory leak in com_import_stmt(): the tuple created to hold the
"..." in "from M import ..." was never DECREFed.  Leak reported by
James Slaughter and nailed by Barry, who also provided an earlier
version of this patch.
2000-11-27 22:22:36 +00:00
Tim Peters 102e457a01 SF bug 119622: compile errors due to redundant atof decls. I don't understand
the bug report (for details, look at it), but agree there's no need for Python
to declare atof itself:  we #include stdlib.h, and ANSI C sez atof is declared
there already.
2000-11-14 20:44:53 +00:00
Fred Drake d5fadf75e4 Rationalize use of limits.h, moving the inclusion to Python.h.
Add definitions of INT_MAX and LONG_MAX to pyport.h.
Remove includes of limits.h and conditional definitions of INT_MAX
and LONG_MAX elsewhere.

This closes SourceForge patch #101659 and bug #115323.
2000-09-26 05:46:01 +00:00
Fred Drake fd1f1be98d com_continue_stmt(): Improve error message when continue is found
in a try statement in a loop.

This is related to SourceForge bug #110830.
2000-09-08 16:31:24 +00:00
Fredrik Lundh 1fa0b895ec changed \x to consume exactly two hex digits. implements PEP-223
for 8-bit strings.
2000-09-02 20:11:27 +00:00
Guido van Rossum 8586991099 REMOVED all CWI, CNRI and BeOpen copyright markings.
This should match the situation in the 1.6b1 tree.
2000-09-01 23:29:29 +00:00
Thomas Wouters dd13e4f91f Replace the run-time 'future-bytecode-stream-inspection' hack to find out
how 'import' was called with a compiletime mechanism: create either a tuple
of the import arguments, or None (in the case of a normal import), add it to
the code-block constants, and load it onto the stack before calling
IMPORT_NAME.
2000-08-27 20:31:27 +00:00
Thomas Wouters e753ef8d1b Re-allow 'import mod.submod as s', and change its meaning to what it should
mean; the same as 'from mod import submod as s'.
2000-08-27 20:16:32 +00:00
Thomas Wouters 0ae722e0a2 Oops, one pop too many. 2000-08-27 19:01:33 +00:00
Thomas Wouters b59290f5b2 Fix allowable node-types for assignment, need to add 'listmaker'.
(This fix is a bit broken, just as the test already was: the test for
testlist and listmaker are done always, whereas the test for exprlist and
the actual abort() are only done if Py_DEBUG is defined. Suggestions
welcome, I guess ;)
2000-08-25 05:41:11 +00:00
Thomas Wouters 434d0828d8 Support for three-token characters (**=, >>=, <<=) which was written by
Michael Hudson, and support in general for the augmented assignment syntax.
The graminit.c patch is large!
2000-08-24 20:11:32 +00:00
Fred Drake ef8ace3a6f Charles G. Waldman <cgw@fnal.gov>:
Add the EXTENDED_ARG opcode to the virtual machine, allowing 32-bit
arguments to opcodes instead of being forced to stick to the 16-bit
limit.  This is especially useful for machine-generated code, which
can be too long for the SET_LINENO parameter to fit into 16 bits.

This closes the implementation portion of SourceForge patch #100893.
2000-08-24 00:32:09 +00:00
Skip Montanaro 46dfa5f4ed require list comprehensions to start with a for clause 2000-08-22 02:43:07 +00:00
Barry Warsaw 24703a02e7 com_print_stmt(): Guido rightly points out that the stream expression
in extended prints should only be evaluated once.  This patch plays
stack games (documented!) to fix this.
2000-08-21 17:07:20 +00:00
Barry Warsaw 29c574e30c PEP 214, Extended print Statement, has been accepted by the BDFL.
com_print_stmt(): Implement recognition of, and byte compilation for,
extended print using new byte codes PRINT_ITEM_TO and
PRINT_NEWLINE_TO.
2000-08-21 15:38:56 +00:00
Thomas Wouters 8bad612881 Disallow "import mod.submod as m", because the result is ambiguous. Does it
load mod.submod as m, or mod as m ? Both can be achieved differently, and
unambiguously. Also attempt to document this restriction (editor
appreciated!)

Note that this is an artificial check during compile, because incorporating
this in the grammar is hard, and then adjusting the compiler to do the right
thing with the right nodes is harder.
2000-08-19 20:55:02 +00:00
Barry Warsaw 73f77b4495 com_error(): Quiet gcc -Wall warning. 2000-08-18 19:59:20 +00:00
Thomas Wouters 5215225ea1 Apply SF patch #101135, adding 'import module as m' and 'from module import
name as n'. By doing some twists and turns, "as" is not a reserved word.

There is a slight change in semantics for 'from module import name' (it will
now honour the 'global' keyword) but only in cases that are explicitly
undocumented.
2000-08-17 22:55:00 +00:00
Tim Peters b59ab42487 Fix new compiler warnings. Unused var in compile.c. Argsize mismatches
in binascii.c (only on platforms with signed chars -- although Py_CHARMASK
is documented as returning an int, it only does so on platforms with
signed chars).
2000-08-15 16:41:26 +00:00
Fred Drake a811a5b13a Remove the osdefs.h #include; it was not needed in the final version of
my last set of changes.
2000-08-15 16:13:37 +00:00
Fred Drake dcf08e0dfe When raising a SyntaxError, make a best-effort attempt to set the
filename and lineno attributes, but do not mask the SyntaxError if we
fail.

This is part of what is needed to close SoruceForge bug #110628
(Jitterbug PR#278).

Wrap a long line to fit in under 80 columns.
2000-08-15 15:49:44 +00:00
Thomas Wouters 87df80d542 The list comp patch checked for the second child node of the 'listmaker'
node, without checking if the node actually had more than one child. It can
have only one node, though: '[' test ']'. This fixes it.
2000-08-13 17:05:17 +00:00
Thomas Wouters 361852f80e The list comprehensions patch partly reversed the removal of UNPACK_LIST,
re-introducing com_assign_list, now unused. Removed it.
2000-08-12 22:03:16 +00:00
Skip Montanaro 803d6e5451 list comprehensions. see
http://sourceforge.net/patch/?func=detailpatch&patch_id=100654&group_id=5470

for details.
2000-08-12 18:09:51 +00:00
Thomas Wouters 0be5aab04d Merge UNPACK_LIST and UNPACK_TUPLE into a single UNPACK_SEQUENCE, since they
did the same anyway.

I'm not sure what to do with Tools/compiler/compiler/* -- that isn't part of
distutils, is it ? Should it try to be compatible with old bytecode version ?
2000-08-11 22:15:52 +00:00
Guido van Rossum 6c2f0c73a1 When returning an error from jcompile() (which is passed through by
PyNode_Compile()), make sure that an exception is actually set --
otherwise someone stomped on our error.  [2.0 checkin of this fix.]
2000-08-07 19:22:43 +00:00
Thomas Wouters e8643c465d Fix some strange indentation and grammar that have been bugging me for
weeks.
2000-08-05 21:37:50 +00:00
Thomas Wouters f70ef4f860 Mass ANSIfication of function definitions. Doesn't cover all 'extern'
declarations yet, those come later.
2000-07-22 18:47:25 +00:00
Peter Schneider-Kamp 9a5086c598 just fixing the indentation 2000-07-13 06:24:29 +00:00
Peter Schneider-Kamp 11384c60f6 raise error on duplicate function arguments
example:

>>> def f(a,a):print a
...
SyntaxError: duplicate argument in function definition
2000-07-13 06:15:04 +00:00
Tim Peters dbd9ba6a6c Nuke all remaining occurrences of Py_PROTO and Py_FPROTO. 2000-07-09 03:09:57 +00:00
Jack Jansen 41aa8e523d Include limits.h if we have it. 2000-07-03 21:39:47 +00:00
Guido van Rossum ffcc3813d8 Change copyright notice - 2nd try. 2000-06-30 23:58:06 +00:00
Guido van Rossum fd71b9e9d4 Change copyright notice. 2000-06-30 23:50:40 +00:00
Fred Drake 615ae55eca Trent Mick <trentm@activestate.com>:
The common technique for printing out a pointer has been to cast to a long
and use the "%lx" printf modifier. This is incorrect on Win64 where casting
to a long truncates the pointer. The "%p" formatter should be used instead.

The problem as stated by Tim:
> Unfortunately, the C committee refused to define what %p conversion "looks
> like" -- they explicitly allowed it to be implementation-defined. Older
> versions of Microsoft C even stuck a colon in the middle of the address (in
> the days of segment+offset addressing)!

The result is that the hex value of a pointer will maybe/maybe not have a 0x
prepended to it.


Notes on the patch:

There are two main classes of changes:
- in the various repr() functions that print out pointers
- debugging printf's in the various thread_*.h files (these are why the
patch is large)


Closes SourceForge patch #100505.
2000-06-30 16:20:13 +00:00
Guido van Rossum 582acece2e Trent Mick's Win64 changes: size_t vs. int or long; also some overflow
tests.
2000-06-28 22:07:35 +00:00
Guido van Rossum b18618dab7 Vladimir Marangozov's long-awaited malloc restructuring.
For more comments, read the patches@python.org archives.
For documentation read the comments in mymalloc.h and objimpl.h.

(This is not exactly what Vladimir posted to the patches list; I've
made a few changes, and Vladimir sent me a fix in private email for a
problem that only occurs in debug mode.  I'm also holding back on his
change to main.c, which seems unnecessary to me.)
2000-05-03 23:44:39 +00:00
Guido van Rossum fdc8bdb67b Marc-Andre Lemburg:
Support for the new -U command line option option:
with the option enabled the Python compiler
interprets all "..." strings as u"..." (same with r"..." and
ur"...").
2000-05-01 17:54:56 +00:00
Guido van Rossum a2ace6ae25 Charles G Waldman:
Follow a suggestion in an /*XXX*/ comment [in com_add()] to speed up
compilation by using supplemental dictionaries to keep track of names
and constants, eliminating quadratic behavior.  With this patch in
place, the time to import a 5000-line file with lots of constants [at
the global level] is reduced from 20 seconds to under 3 on my system.
2000-04-28 16:42:25 +00:00
Fred Drake 4e998bc658 M.-A. Lemburg <mal@lemburg.com>:
Fixed problem with Unicode string concatenation:
u = (u"abc" u"abc") previously dumped core.
2000-04-13 14:10:44 +00:00
Guido van Rossum 44679590e0 Patch by Vladimir Marangozov to include the function name when
comparing code objects.  This give sless surprising results in
-Optimized code.  It also sorts code objects by name, now.

[I changed the patch to hash() slightly to touch fewer lines.]
2000-04-10 16:20:31 +00:00
Guido van Rossum a396a883af Vladimir Marangozov: This fixes the line number in the string
representation of code objects when optimization is on (python -O). It
was always reported as -1 instead of the real lineno.
2000-04-07 01:21:36 +00:00
Jeremy Hylton e4fb958fc2 remove reference (vestigal) to CALL_FUNCTION_STAR 2000-03-29 00:10:44 +00:00
Jeremy Hylton 7690151c7e slightly modified version of Greg Ewing's extended call syntax patch
executive summary:
Instead of typing 'apply(f, args, kwargs)' you can type 'f(*arg, **kwargs)'.
Some file-by-file details follow.

Grammar/Grammar:
    simplify varargslist, replacing '*' '*' with '**'
    add * & ** options to arglist

Include/opcode.h & Lib/dis.py:
    define three new opcodes
        CALL_FUNCTION_VAR
        CALL_FUNCTION_KW
        CALL_FUNCTION_VAR_KW

Python/ceval.c:
    extend TypeError "keyword parameter redefined" message to include
        the name of the offending keyword
    reindent CALL_FUNCTION using four spaces
    add handling of sequences and dictionaries using extend calls
    fix function import_from to use PyErr_Format
2000-03-28 23:49:17 +00:00
Guido van Rossum 5aa88f097f Marc-Andre Lemburg: support for Unicode string literals (u"...", ur"..."). 2000-03-10 23:01:36 +00:00
Guido van Rossum 72badf5404 The cleanup code in com-init() at label fail_0000 should remove
c_varnames, not c_lnotab.
1999-12-20 20:40:12 +00:00
Guido van Rossum 2174dcb061 Tim Peters writes:
For a long time I've seen absurd tracebacks under -O (e.g., negative
line numbers), but very rarely.  Since I was looking at tracebacks
anyway, thought I'd track it down.  Turns out to be Guido's only
predictable blind spot <wink -- "char" is signed on some non-GvR
systems>.  Patch follows.
1999-09-15 22:48:09 +00:00
Guido van Rossum 541563ec7e Implement -OO; "unsafe" optimization that removes docstrings.
Marc-Andre Lemburg.
1999-01-28 15:08:09 +00:00
Guido van Rossum 46e9705eca Remove prototypes for PyOS_strto[u]l -- Chris Herborth. 1998-12-10 16:57:44 +00:00
Guido van Rossum ca90605678 Add more SET_LINENO instructions in long argument lists 1998-12-10 16:56:22 +00:00
Guido van Rossum d076c73cc8 Changes to support other object types besides strings
as the code string of code objects, as long as they support
the (readonly) buffer interface.  By Greg Stein.
1998-10-07 19:42:25 +00:00
Guido van Rossum dfede31c7f Eh, better error message for the previous change. It now says
"non-default argument follows default argument".
1998-10-02 14:06:56 +00:00
Guido van Rossum 29d38cd088 Treat def f(a, b=1, c): ... as an error (missing default for c)
instead of silently supplying a default of None fore c.
1998-10-02 13:41:54 +00:00
Guido van Rossum 90f827c67e Comment out the print statement about underflow. (This only seems to
happen when you use a non-keyword argument after a keyword argument,
and in this case you also get a syntax error.  I fully suspect that
the underflow is caused by the code that stops generating code when it
detects the syntax error, but I can't find the culprit right now.  I
know, I know.)
1998-08-25 18:22:17 +00:00
Guido van Rossum 234e260d5e Since PyDict_GetItem() can't raise an exception any more, there's no
need to call PyErr_Clear() when it returns NULL.
1998-05-14 02:16:20 +00:00
Guido van Rossum d295f120ae Make first raise argument optional 1998-04-09 21:39:57 +00:00
Guido van Rossum ed1100f3b6 Don't use sscanf(s, "%x", &c) to parse \xX... escapes; hardcode it. 1997-10-20 23:24:07 +00:00
Guido van Rossum ac1fc95c3c Fixed for WITHOUT_COMPLEX compilation (Jack) 1997-10-08 15:23:55 +00:00
Guido van Rossum beef8aa719 Cprrect stuoid tyops -- was comparing variabes with themselves because
of co/cp mixup.
1997-08-29 17:12:43 +00:00
Guido van Rossum 275558cb9f Plug a leak in code_dealloc() (and reordered the deallocs to match the
order of the variables in the declarations).

Also removed an entry in the TODO list that's done.
1997-07-25 20:13:49 +00:00
Guido van Rossum db9e20f418 Fix bug reported by Just: anonymous arguments used for tuples should
have a unique name, otherwise they get squished by locals2fast (or
fast2locals, I dunno) when the debugger is invoked before they have
been transferred to real locals.
1997-07-10 01:06:53 +00:00
Guido van Rossum c8b6df9004 PyObject_Compare can raise an exception now. 1997-05-23 00:06:51 +00:00
Guido van Rossum 2f75b29630 Indent the #error directives so a classic K&R cpp doesn't see them. 1997-05-20 22:18:48 +00:00
Guido van Rossum 9a0f04d4cd Get rid of obsolete support for access statement. 1997-05-09 00:58:02 +00:00
Guido van Rossum b05a5c7698 Instead of importing graminit.h whenever one of the three grammar 'root'
symbols is needed, define these in Python.h with a Py_ prefix.
1997-05-07 17:46:13 +00:00
Guido van Rossum 79f25d9a7b Quickly renamed the remaining files -- this directory is done. 1997-04-29 20:08:16 +00:00
Guido van Rossum 644a12b00c Tweaks to keep the Microsoft compiler quier. 1997-04-09 19:24:53 +00:00
Guido van Rossum 5f5e817e00 Support for alternative string quotes (a"xx", b"xx", c"xx", ...).
In interactive mode, do generate code for single-string statements.
1997-04-06 03:41:40 +00:00
Guido van Rossum 228d7f3f67 Added assert statement. 1997-04-02 05:24:36 +00:00
Guido van Rossum 45b83915f8 New form of PyFPE_END_PROTECT macro. 1997-03-14 04:32:50 +00:00
Guido van Rossum 6af0c00ab6 Fix dumb bug calling parsestrplus with wrong node as argument.
Add prototypes for parsestr() and parsestrplus() (unrelated, but
seemed to make sense.)
1997-03-11 21:25:55 +00:00
Guido van Rossum 7c53111d5b Added support for ``if __debug__:'' -- if -O is given, this form is
recognized by the code generator and code generation for the test and
the subsequent suite is suppressed.

One must write *exactly* ``if __debug__:'' or ``elif __debug__:'' --
no parentheses or operators must be present, or the optimization is
not carried through.  Whitespace doesn't matter.  Other uses of
__debug__ will find __debug__ defined as 0 or 1 in the __builtin__
module.
1997-03-11 18:42:21 +00:00
Guido van Rossum 8e793d925c Add global Py_OptimizeFlag. SET_LINENO is omitted again unless this is
nonzero.
1997-03-03 19:13:14 +00:00
Guido van Rossum 0ae748d3c4 Changes for Lee Busby's SIGFPE patch set.
New file pyfpe.c and exception FloatingPointError.
Surround some f.p. operations with PyFPE macro brackets.
1997-02-14 22:58:07 +00:00
Guido van Rossum da4eb5c3b5 Instead of emitting SET_LINENO instructions, generate a line number
table which is incorporated in the code object.  This way, the runtime
overhead to keep track of line numbers is only incurred when an
exception has to be reported.
1997-01-24 03:43:35 +00:00
Guido van Rossum 7eb883a18e Remove unused variable. 1997-01-18 20:04:05 +00:00
Guido van Rossum 7b89b6a660 Intern all names and varnames in newcodeobject(), plus those string
literals that look like identifiers.  Also intern all strings used as
names during the compilation.
1997-01-18 08:02:57 +00:00
Guido van Rossum 8b993a98db Add co_stacksize field to codeobject structure, and stacksize argument
to PyCode_New() argument list.  Move MAXBLOCKS constant to conpile.h.

Added accurate calculation of the actual stack size needed by the
generated code.

Also commented out all fprintf statements (except for a new one to
diagnose stack underflow, and one in #ifdef'ed out code), and added
some new TO DO suggestions (now that the stacksize is taken of the TO
DO list).
1997-01-17 21:04:03 +00:00
Guido van Rossum 635abd24f0 Check for duplicate keyword arguments at compile time. 1997-01-06 22:56:52 +00:00
Guido van Rossum 80bb9655f0 Keep gcc -Wall happy. 1996-12-05 23:27:02 +00:00
Guido van Rossum d266eb460e New permission notice, includes CNRI. 1996-10-25 14:44:06 +00:00
Guido van Rossum e449af7da9 Ellipses -> Ellipsis rename (the dictionary really says that it should
be Ellipsis!).
Bumped the API version because a linker-visible symbol is affected.
Old C code will still compile -- there's a b/w compat macro.
Similarly, old Python code will still run, builtin exports both
Ellipses and Ellipsis.
1996-10-11 16:25:41 +00:00
Guido van Rossum 452a9833c9 Added line number to most compile-time error messages. 1996-09-17 14:32:04 +00:00
Guido van Rossum d8a6d1c2e7 Afterthough: leave both leading underscores in,
so __spam becomes _ClassName__spam.
1996-08-24 07:54:27 +00:00
Guido van Rossum fe2236f3c8 Oops need to mangle global statement separately 1996-08-24 07:29:04 +00:00
Guido van Rossum 8ff077b094 Name mangling, what the heck! 1996-08-24 06:21:31 +00:00
Guido van Rossum 0dfcf753ad Disable support for access statement 1996-08-12 22:00:53 +00:00
Guido van Rossum 15cc9a0a76 Removed unused var; added error check for ``lambda: x=1''. 1996-08-08 18:51:04 +00:00
Guido van Rossum 8861b74445 Changes for slice and ellipses 1996-07-30 16:49:37 +00:00
Guido van Rossum 530956d247 Py_complex; and WITHOUT_COMPLEX added to getargs.c 1996-07-21 02:27:43 +00:00
Guido van Rossum 15ad9a6e52 only use 'j' for imaginary constants 1996-01-26 20:53:56 +00:00
Jack Jansen 1e7b2aa5d6 Removed unused var 1996-01-25 16:11:19 +00:00
Guido van Rossum 50564e8dae changes for complex and power (**) operator 1996-01-12 01:13:16 +00:00
Guido van Rossum 53f4524a92 disable code generation for access statement 1995-10-08 00:42:46 +00:00
Jack Jansen 95ffa23597 Removed unused variables 1995-10-03 14:38:41 +00:00
Guido van Rossum a1e7e62893 fix bug with missing default for last arg (discovered by Tommy Burnette) 1995-09-18 21:44:04 +00:00
Guido van Rossum 681d79aaf3 keyword arguments and faster calls 1995-07-18 14:51:37 +00:00
Guido van Rossum f10570b9eb 3rd arg for raise; INCOMPLETE keyword parameter passing (currently f(kw=value) is seen as f('kw', value)) 1995-07-07 22:53:21 +00:00
Guido van Rossum d9dfaf5a3b fix typo (== for =) in assignment 1995-02-17 15:04:57 +00:00
Guido van Rossum 7f7f274839 use Py_CHARMASK 1995-02-10 17:01:56 +00:00
Guido van Rossum 164d4ff0e5 added missing case to get_docstring 1995-01-26 00:40:09 +00:00
Guido van Rossum 3952cb0725 fix mem leak (localmap in optimize) 1995-01-20 16:56:41 +00:00
Guido van Rossum 1f4fa50176 Two independent chages:
(a) support import NAME.NAME...NAME;
(b) support doc strings in modules, classes and function definitions
1995-01-07 12:41:23 +00:00
Guido van Rossum 6d023c98b0 Added 1995 to copyright message.
bltinmodule.c: fixed coerce() nightmare in ternary pow().
modsupport.c (initmodule2): pass METH_FREENAME flag to newmethodobject().
pythonrun.c: move flushline() into and around print_error().
1995-01-04 19:12:13 +00:00
Guido van Rossum 1ae940a587 Lots of changes, most minor (fatal() instead of abort(), use of
err_fetch/err_restore and so on).  But...
NOTE: import.c has been rewritten and all the DL stuff is now in the
new file importdl.c.
1995-01-02 19:04:15 +00:00
Guido van Rossum 363ac7d5b6 set name to <lambda> instead of None for lambdas 1994-11-10 22:40:34 +00:00
Guido van Rossum 4ca6c9db81 * Python/compile.c (com_argdefs, com_arglist): avoid referencing
CHILD(n,i) for i >= NCH(n)
1994-08-29 12:16:12 +00:00
Guido van Rossum 57531fea90 change syntactical position of lambdef (was an atom, now is a test) 1993-11-30 14:57:42 +00:00
Guido van Rossum 590baa4a7a * import.c (get_module): pass .py filename to parse_file, not .pyc filename!
* funcobject.c (func_repr): don't call getstringvalue(None) for anonymous
  functions.
* bltinmodule.c: removed lambda (which is now a built-in function);
  removed implied lambda for string arg to filter/map/reduce.
* Grammar, graminit.[ch], compile.[ch]: replaced lambda as built-in
  function by lambda as grammar entity: instead of "lambda('x: x+1')" you
  write "lambda x: x+1".
* Xtmodule.c (checkargdict): return 0, not NULL, for error.
1993-11-30 13:40:46 +00:00
Guido van Rossum a3d78fb268 * posixmodule.c: added set{uid,gid}.
* {tuple,list,mapping,array}object.c: call printobject with 0 for flags
* compile.c (parsestr): use quote instead of '\'' at one crucial point
* arraymodule.c (array_getattr): Added __members__ attribute
1993-11-10 09:23:53 +00:00
Guido van Rossum 2e8f8a398e Added compare operations for functions and code objects.
(Also hash, but it doesn't work yet.)
1993-11-05 10:20:10 +00:00
Guido van Rossum 12d12c5faf * compile.[ch]: support for lambda()
* PROTO.h, mymalloc.h: added #ifdefs for TURBOC and GNUC.
* allobjects.h: added #include "rangeobject.h"
* Grammar: added lambda_input; relaxed syntax for exec.
* bltinmodule.c: added bagof, map, reduce, lambda, xrange.
* tupleobject.[ch]: added resizetuple().
* rangeobject.[ch]: new object type to speed up range operations (not
  convinced this is needed!!!)
1993-10-26 17:58:25 +00:00
Guido van Rossum 8054fad890 Changes to accept double-quoted strings on input. 1993-10-26 15:19:44 +00:00
Guido van Rossum db3165e655 * bltinmodule.c: removed exec() built-in function.
* Grammar: add exec statement; allow testlist in expr statement.
* ceval.c, compile.c, opcode.h: support exec statement;
  avoid optimizing locals when it is used
* fileobject.{c,h}: add getfilename() internal function.
1993-10-18 17:06:59 +00:00
Guido van Rossum f1dc566328 * Makefile: added all: and default: targets.
* many files: made some functions static; removed "extern int errno;".
* frozenmain.c: fixed bugs introduced on 24 June...
* flmodule.c: remove 1.5 bw compat hacks, add new functions in 2.2a
  (and some old functions that were omitted).
* timemodule.c: added MSDOS floatsleep version .
* pgenmain.c: changed exit() to goaway() and added defn of goaway().
* intrcheck.c: add hack (to UNIX only) so interrupting 3 times
  will exit from a hanging program.  The second interrupt prints
  a message explaining this to the user.
1993-07-05 10:31:29 +00:00
Guido van Rossum 81daa32c15 Access checks now work, at least for instance data (not for methods
yet).  The class is now passed to eval_code and stored in the current
frame.  It is also stored in instance method objects.  An "unbound"
instance method is now returned when a function is retrieved through
"classname.funcname", which when called passes the class to eval_code.
1993-05-20 14:24:46 +00:00
Guido van Rossum 25831652fd Several changes in one:
(1) dictionaries/mappings now have attributes values() and items() as
well as keys(); at the C level, use the new function mappinggetnext()
to iterate over a dictionary.

(2) "class C(): ..." is now illegal; you must write "class C: ...".

(3) Class objects now know their own name (finally!); and minor
improvements to the way how classes, functions and methods are
represented as strings.

(4) Added an "access" statement and semantics.  (This is still
experimental -- as long as you don't use the keyword 'access' nothing
should be changed.)
1993-05-19 14:50:45 +00:00
Guido van Rossum 8b17d6bd89 Changes to speed up local variables enormously, by avoiding dictionary
lookup (opcode.h, ceval.[ch], compile.c, frameobject.[ch],
pythonrun.c, import.c).  The .pyc MAGIC number is changed again.
Added get_menu_text to flmodule.
1993-03-30 13:18:41 +00:00
Guido van Rossum 9bfef44d97 * Changed all copyright messages to include 1993.
* Stubs for faster implementation of local variables (not yet finished)
* Added function name to code object.  Print it for code and function
  objects.  THIS MAKES THE .PYC FILE FORMAT INCOMPATIBLE (the version
  number has changed accordingly)
* Print address of self for built-in methods
* New internal functions getattro and setattro (getattr/setattr with
  string object arg)
* Replaced "dictobject" with more powerful "mappingobject"
* New per-type functio tp_hash to implement arbitrary object hashing,
  and hashobject() to interface to it
* Added built-in functions hash(v) and hasattr(v, 'name')
* classobject: made some functions static that accidentally weren't;
  added __hash__ special instance method to implement hash()
* Added proper comparison for built-in methods and functions
1993-03-29 10:43:31 +00:00
Guido van Rossum 2dff991f6b Give code objects a more useful representation. 1992-09-03 20:50:59 +00:00
Guido van Rossum 94fb82e461 Only * can be used for varargs argument lists 1992-04-05 14:24:50 +00:00
Guido van Rossum f1aeab7f81 fix what lint found 1992-03-27 17:28:26 +00:00
Guido van Rossum 56a1bcc107 Totally get rid of silly '\E' escape. 1992-03-12 17:36:11 +00:00
Guido van Rossum 598fd8c980 Raise SyntaxError for syntax errors detected in this phase. 1992-01-26 18:12:03 +00:00
Guido van Rossum acbefefe21 Use strtoul() for oct/hex constants.
Accept * as well as + in varargs arg list.
1992-01-19 16:33:51 +00:00
Guido van Rossum 49d6dc4123 Added varargs code. 1992-01-14 18:30:26 +00:00
Guido van Rossum 39d942da0f add READONLY to member list. 1992-01-12 02:30:05 +00:00
Guido van Rossum a9df32ab2a Minor changes. 1991-12-31 13:13:35 +00:00
Guido van Rossum efb087b13f Changed some RuntimeErrors. 1991-12-16 15:41:41 +00:00
Guido van Rossum 288a60f973 New argument passing. 1991-12-16 13:05:10 +00:00
Guido van Rossum c5e96291d0 Implement 'global' and new class syntax. 1991-12-10 13:53:51 +00:00
Guido van Rossum 7928cd7636 Added shift and mask ops. 1991-10-24 14:59:31 +00:00
Guido van Rossum 01cfd447d0 Comment out 'abort()' call.
Changed comparison operators.
1991-10-20 20:12:38 +00:00
Guido van Rossum 831632507a Use dmore dict2lookup. 1991-08-16 08:58:43 +00:00
Guido van Rossum 4bad92cc8a New syntax: semicolons, continue statement.
For the latter we must keep track of the current block's type.
(We can't continue through a try statement, sigh.()
1991-07-27 21:34:52 +00:00
Guido van Rossum efc0bd02e5 Check for identical types before comparing objects to see if they
are the same -- 0 and 0.0 compare equal but should be considered different
here!
1991-07-01 18:44:20 +00:00
Guido van Rossum a082ce40a6 Changed and exported newcodeobject() interface, for ".pyc" files. 1991-06-04 19:41:56 +00:00
Guido van Rossum fb8edfce22 Don't optimize <string> and <stdin> code 1991-05-14 11:56:03 +00:00
Guido van Rossum e3a204fe47 Added long integer support. 1991-05-05 20:05:35 +00:00
Guido van Rossum 0a697f686f BUGFIX! Instructions are unsigned bytes. 1991-04-16 08:39:12 +00:00
Guido van Rossum 282914b7b0 Added error checking for numeric constants; added local/global variable
optimization.
1991-04-04 10:42:56 +00:00
Guido van Rossum 62d4624ea3 Create code string with initial size of 1000 instead of 0. 1991-04-03 19:00:23 +00:00
Guido van Rossum f70e43a073 Added copyright notice. 1991-02-19 12:39:46 +00:00
Guido van Rossum 4c4177865d Fix bug in input(); add comments to cases in compile(). 1991-01-21 16:09:22 +00:00
Guido van Rossum 3f5da24ea3 "Compiling" version 1990-12-20 15:06:42 +00:00
Guido van Rossum d6f3bc2aae Compile class definitions.
Document and fix code generation for try statements.
Use two bytes for all arguments.
Avoid duplicate entries in lists of constants and names.
1990-11-18 17:35:03 +00:00
Guido van Rossum 10dc2e8097 Initial revision 1990-11-18 17:27:39 +00:00