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* Patch #2477: Added from __future__ import unicode_literalsChristian Heimes2008-03-261-0/+1
| | | | The new PyParser_*Ex() functions are based on Neal's suggestion and initial patch. The new __future__ feature makes all '' and r'' unicode strings. b'' and br'' stay (byte) strings.
* Backport of the print function, using a __future__ import.Eric Smith2008-03-181-0/+2
| | | | | | | | This work is substantially Anthony Baxter's, from issue 1633807. I just freshened it, made a few minor tweaks, and added the test cases. I also created issue 2412, which is to check for 2to3's behavior with the print function. I also added myself to ACKS.
* Don't abbreviate ABS, use long name ABSOLUTE.Neal Norwitz2006-04-031-1/+1
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* Move #include to outside "extern C {}", before Tim figures out it'll breakThomas Wouters2006-02-281-2/+3
| | | | VC++.
* Include code.h more sanely.Thomas Wouters2006-02-281-3/+2
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* from __future__ import with_statement addon for 'with', mostly written byThomas Wouters2006-02-281-0/+1
| | | | Neal.
* SF patch #1438387, PEP 328: relative and absolute imports.Thomas Wouters2006-02-281-0/+1
| | | | | | | | | | | | | | | | | | | | | | | - IMPORT_NAME takes an extra argument from the stack: the relativeness of the import. Only passed to __import__ when it's not -1. - __import__() takes an optional 5th argument for the same thing; it __defaults to -1 (old semantics: try relative, then absolute) - 'from . import name' imports name (be it module or regular attribute) from the current module's *package*. Likewise, 'from .module import name' will import name from a sibling to the current module. - Importing from outside a package is not allowed; 'from . import sys' in a toplevel module will not work, nor will 'from .. import sys' in a (single-level) package. - 'from __future__ import absolute_import' will turn on the new semantics for import and from-import: imports will be absolute, except for from-import with dots. Includes tests for regular imports and importhooks, parser changes and a NEWS item, but no compiler-package changes or documentation changes.
* Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,Neal Norwitz2005-12-171-1/+1
| | | | simplifies a lot of error handling code, and fixes many memory leaks.
* use PyAPI_FUNC instead of DL_IMPORT. are we going to deprecate the old ↵Neal Norwitz2005-10-231-2/+2
| | | | non-Py PREFIXED macros, etc?
* Fix a bunch of imports to use code.h instead of compile.h.Jeremy Hylton2005-10-211-5/+0
| | | | Remove duplicate declarations from compile.h
* Merge ast-branch to headJeremy Hylton2005-10-201-58/+13
| | | | | | | | | | This change implements a new bytecode compiler, based on a transformation of the parse tree to an abstract syntax defined in Parser/Python.asdl. The compiler implementation is not complete, but it is in stable enough shape to run the entire test suite excepting two disabled tests.
* This is my patch #876198 plus a NEWS entry and a header frob.Michael W. Hudson2004-02-121-5/+0
| | | | | Remove the ability to use (from C) arbitrary objects supporting the read buffer interface as the co_code member of code objects.
* Small function call optimization and special build option for call stats.Jeremy Hylton2003-02-051-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | -DCALL_PROFILE: Count the number of function calls executed. When this symbol is defined, the ceval mainloop and helper functions count the number of function calls made. It keeps detailed statistics about what kind of object was called and whether the call hit any of the special fast paths in the code. Optimization: When we take the fast_function() path, which seems to be taken for most function calls, and there is minimal frame setup to do, avoid call PyEval_EvalCodeEx(). The eval code ex function does a lot of work to handle keywords args and star args, free variables, generators, etc. The inlined version simply allocates the frame and copies the arguments values into the frame. The optimization gets a little help from compile.c which adds a CO_NOFREE flag to code objects that don't have free variables or cell variables. This change allows fast_function() to get into the fast path with fewer tests. I measure a couple of percent speedup in pystone with this change, but there's surely more that can be done.
* Constify filenames and scripts. Fixes #651362.Martin v. Löwis2002-12-111-3/+3
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* Excise DL_EXPORT from Include.Mark Hammond2002-08-121-6/+6
| | | | Thanks to Skip Montanaro and Kalle Svensson for the patches.
* Removed more hair in support of future-generator stmts.Tim Peters2002-04-121-1/+1
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* Add helper macro to get the number of free variables for a PyCodeObject.Jeremy Hylton2001-12-131-0/+1
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* Refactor future feature handlingJeremy Hylton2001-08-101-9/+1
| | | | | | | | | | | | | | | | | | | Replace individual slots in PyFutureFeatures with a single bitmask with one field per feature. The flags for this bitmask are the same as the flags used in the co_flags slot of a code object. XXX This means we waste several bits, because they are used for co_flags but have no meaning for future statements. Don't think this is an issue. Remove the NESTED_SCOPES_DEFAULT define and others. Not sure what they were for anyway. Remove all the PyCF_xxx flags, but define PyCF_MASK in terms of the CO_xxx flags that are relevant for this release. Change definition of PyCompilerFlags so that cf_flags matches co_flags.
* Implement PEP 238 in its (almost) full glory.Guido van Rossum2001-08-081-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* Part way to allowing "from __future__ import generators" to communicateTim Peters2001-07-161-0/+8
| | | | | | | | | | 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.
* Preliminary support for "from __future__ import generators" to enableGuido van Rossum2001-07-151-0/+3
| | | | | | | | the yield statement. I figure we have to have this in before I can release 2.2a1 on Wednesday. Note: test_generators is currently broken, I'm counting on Tim to fix this.
* Enable nested scopes by default.Guido van Rossum2001-07-121-1/+1
| | | | | | | | | | | Although this is a one-character change, more work needs to be done: the compiler can get rid of a lot of non-nested-scopes code, the documentation needs to be updated, the future statement can be simplified, etc. But this change enables the nested scope semantics everywhere, and that's the important part -- we can now test code for compatibility with nested scopes by default.
* Merging the gen-branch into the main line, at Guido's direction. Yay!Tim Peters2001-06-181-0/+1
| | | | | Bugfix candidate in inspect.py: it was referencing "self" outside of a method.
* If a code object is compiled with nested scopes, define the CO_NESTED flag.Jeremy Hylton2001-03-221-0/+1
| | | | | Add PyEval_GetNestedScopes() which returns a non-zero value if the code for the current interpreter frame has CO_NESTED defined.
* Useful future statement support for the interactive interpreterJeremy Hylton2001-03-011-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | (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().
* Presumed correct compiler pass for future statementsJeremy Hylton2001-02-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | 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.
* Improved __future__ parser; still more to doJeremy Hylton2001-02-271-3/+13
| | | | | | | | | | | | | | | 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
* Preliminary support for future nested scopesJeremy Hylton2001-02-271-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* PEP 227 implementationJeremy Hylton2001-01-251-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* REMOVED all CWI, CNRI and BeOpen copyright markings.Guido van Rossum2000-09-011-9/+0
| | | | This should match the situation in the 1.6b1 tree.
* ANSI-fication and Py_PROTO extermination.Fred Drake2000-07-091-24/+24
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* Change copyright notice - 2nd try.Guido van Rossum2000-06-301-6/+0
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* Change copyright notice.Guido van Rossum2000-06-301-21/+6
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* Add DL_IMPORT(returntype) for all officially exported functions.Guido van Rossum1998-12-041-3/+3
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* Changes to support other object types besides stringsGuido van Rossum1998-10-071-1/+6
| | | | | as the code string of code objects, as long as they support the (readonly) buffer interface. By Greg Stein.
* Add co_firstlineno and co_lnotab, for the line number table generatedGuido van Rossum1997-01-241-1/+4
| | | | by the compiler (in lieu of SET_LINENO instructions).
* Add co_stacksize field to codeobject structure, and stacksize argumentGuido van Rossum1997-01-171-1/+3
| | | | | to PyCode_New() argument list. Also add CO_MAXBLOCKS constant indicating the maximum static nesting supported by the compiler.
* New permission notice, includes CNRI.Guido van Rossum1996-10-251-12/+19
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* keyword arguments and faster function callsGuido van Rossum1995-07-181-16/+21
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* make the type a parameter of the DL_IMPORT macro, for Borland CGuido van Rossum1995-02-271-1/+1
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* The great renaming, phase two: all header files have been updated toGuido van Rossum1995-01-121-12/+12
| | | | | | | use the new names exclusively, and the linker will see the new names. Files that import "Python.h" also only see the new names. Files that import "allobjects.h" will continue to be able to use the old names, due to the inclusion (in allobjects.h) of "rename2.h".
* Added 1995 copyright.Guido van Rossum1995-01-041-2/+2
| | | | | | object.h: made sizes and refcnts signed ints. stringobject.h: make getstrsize() signed int. methodobject.h: add METH_VARARGS and METH_FREENAME flag bit definitions.
* Changes for dynamic linking under NTGuido van Rossum1994-08-181-1/+1
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* Merge alpha100 branch back to main trunkGuido van Rossum1994-08-011-1/+1
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* * import.c (get_module): pass .py filename to parse_file, not .pyc filename!Guido van Rossum1993-11-301-3/+1
| | | | | | | | | | | * 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.
* * compile.[ch]: support for lambda()Guido van Rossum1993-10-261-1/+3
| | | | | | | | | | * 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!!!)
* * Added support for X11 modules.Guido van Rossum1993-07-281-0/+11
| | | | | | | * Makefile: change location of FORMS library. * posixmodule.c: turn #if 0 into #ifdef MSDOS (stuff in unistd.h or not) * Almost all .h files: added CPP magic to avoid duplicate inclusions and to support inclusion from C++.
* * Changed all copyright messages to include 1993.Guido van Rossum1993-03-291-4/+8
| | | | | | | | | | | | | | | | | * 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
* Copyright for 1992 addedGuido van Rossum1992-04-051-1/+1
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* Export newcodeobject() interface.Guido van Rossum1991-06-041-0/+1
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