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* Speed-up dictionary constructor by about 10%.Raymond Hettinger2007-12-181-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | New opcode, STORE_MAP saves the compiler from awkward stack manipulations and specializes for dicts using PyDict_SetItem instead of PyObject_SetItem. Old disassembly: 0 BUILD_MAP 0 3 DUP_TOP 4 LOAD_CONST 1 (1) 7 ROT_TWO 8 LOAD_CONST 2 ('x') 11 STORE_SUBSCR 12 DUP_TOP 13 LOAD_CONST 3 (2) 16 ROT_TWO 17 LOAD_CONST 4 ('y') 20 STORE_SUBSCR New disassembly: 0 BUILD_MAP 0 3 LOAD_CONST 1 (1) 6 LOAD_CONST 2 ('x') 9 STORE_MAP 10 LOAD_CONST 3 (2) 13 LOAD_CONST 4 ('y') 16 STORE_MAP
* Fix #1752132: wrong comment in opcode description.Georg Brandl2007-07-111-1/+1
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* PEP 343 -- the with-statement.Guido van Rossum2006-02-271-2/+1
| | | | | | | | | | | | | This was started by Mike Bland and completed by Guido (with help from Neal). This still needs a __future__ statement added; Thomas is working on Michael's patch for that aspect. There's a small amount of code cleanup and refactoring in ast.c, compile.c and ceval.c (I fixed the lltrace behavior when EXT_POP is used -- however I had to make lltrace a static global).
* Install two code generation optimizations that depend on NOP.Raymond Hettinger2004-06-211-0/+1
| | | | Reduces the cost of "not" to almost zero.
* SF patch #910929: Optimize list comprehensionsRaymond Hettinger2004-03-071-0/+1
| | | | | Add a new opcode, LIST_APPEND, and apply it to the code generation for list comprehensions. Reduces the per-loop overhead by about a third.
* Revert the previous enhancement to the bytecode optimizer.Raymond Hettinger2003-04-241-2/+0
| | | | The additional code complexity and new NOP opcode were not worth it.
* Improved the bytecode optimizer.Raymond Hettinger2003-04-221-0/+2
| | | | | | | | | | | | | | * Can now test for basic blocks. * Optimize inverted comparisions. * Optimize unary_not followed by a conditional jump. * Added a new opcode, NOP, to keep code size constant. * Applied NOP to previous transformations where appropriate. Note, the NOP would not be necessary if other functions were added to re-target jump addresses and update the co_lnotab mapping. That would yield slightly faster and cleaner bytecode at the expense of optimizer simplicity and of keeping it decoupled from the line-numbering structure.
* Further SET_LINENO reomval fixes. See comments in patch #587933.Michael W. Hudson2002-08-301-3/+0
| | | | | | | | | | Use a slightly different strategy to determine when not to call the line trace function. This removes the need for the RETURN_NONE opcode, so that's gone again. Update docs and comments to match. Thanks to Neal and Armin! Also add a test suite. This should have come with the original patch...
* This is my patchMichael W. Hudson2002-08-151-2/+3
| | | | | | | | [ 587993 ] SET_LINENO killer Remove SET_LINENO. Tracing is now supported by inspecting co_lnotab. Many sundry changes to document and adapt to this change.
* The opcode FOR_LOOP no longer exists.Guido van Rossum2002-06-131-1/+0
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* Patch #494783: Rename cmp_op enumerators.Martin v. Löwis2002-01-011-3/+3
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* Implement PEP 238 in its (almost) full glory.Guido van Rossum2001-08-081-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* 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.
* Iterators phase 1. This comprises:Guido van Rossum2001-04-201-0/+2
| | | | | | | | | | | | | | | | | | | | | | 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???)
* Allow 'continue' inside 'try' clauseJeremy Hylton2001-02-011-0/+1
| | | | SF patch 102989 by Thomas Wouters
* PEP 227 implementationJeremy Hylton2001-01-251-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* Rich comparisons: ensure that LT == Py_LT, etc.Guido van Rossum2001-01-171-1/+2
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* 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.
* The real suport for augmented assignment: new opcodes, new PyNumber andThomas Wouters2000-08-241-3/+13
| | | | PySequence methods and functions, new tokens.
* Charles G. Waldman <cgw@fnal.gov>:Fred Drake2000-08-241-0/+3
| | | | | | | | | 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.
* PEP 214, Extended print Statement, has been accepted by the BDFL.Barry Warsaw2000-08-211-0/+2
| | | | | This adds the two new opcodes to support this feature: PRINT_ITEM_TO, PRINT_NEWLINE_TO.
* Apply SF patch #101135, adding 'import module as m' and 'from module importThomas Wouters2000-08-171-1/+1
| | | | | | | | 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.
* Merge UNPACK_LIST and UNPACK_TUPLE into a single UNPACK_SEQUENCE, since theyThomas Wouters2000-08-111-2/+2
| | | | | | | 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 ?
* Change copyright notice - 2nd try.Guido van Rossum2000-06-301-6/+0
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* Change copyright notice.Guido van Rossum2000-06-301-22/+7
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* remove reference to CALL_FUNCTION_STAR in commentJeremy Hylton2000-03-291-1/+1
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* slightly modified version of Greg Ewing's extended call syntax patchJeremy Hylton2000-03-281-0/+7
| | | | | | | | | | | | | | | | | | | | | | | 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
* Get rid of some obsolete opcodes.Guido van Rossum1998-07-071-5/+0
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* Get rid of obsolete ACCESS_MODE opcode.Guido van Rossum1997-05-091-1/+0
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* New permission notice, includes CNRI.Guido van Rossum1996-10-251-13/+20
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* Added BUILD_SLICE opcode.Guido van Rossum1996-07-301-0/+1
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* changes for ** (power) operatorGuido van Rossum1996-01-121-0/+2
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* keyword arguments and faster function callsGuido van Rossum1995-07-181-6/+4
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* new opcodes RAISE_VARARGS, CALL_FUNCTIONGuido van Rossum1995-07-071-0/+8
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* 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.
* Merge alpha100 branch back to main trunkGuido van Rossum1994-08-011-1/+3
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* * bltinmodule.c: removed exec() built-in function.Guido van Rossum1993-10-181-0/+2
| | | | | | | * 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.
* * 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++.
* Several changes in one:Guido van Rossum1993-05-191-0/+1
| | | | | | | | | | | | | | | | (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.)
* Changes to speed up local variables enormously, by avoiding dictionaryGuido van Rossum1993-03-301-8/+6
| | | | | | 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.
* * Changed all copyright messages to include 1993.Guido van Rossum1993-03-291-2/+6
| | | | | | | | | | | | | | | | | * 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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* Added UNPACK_VARARG.Guido van Rossum1992-01-141-0/+1
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* Added UNPACK_ARG.Guido van Rossum1991-12-161-1/+3
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* Added _GLOBAL opcodes.Guido van Rossum1991-12-101-0/+2
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* Added shift and mask ops.Guido van Rossum1991-10-241-0/+8
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* Added opcodes to load local/global variablesGuido van Rossum1991-04-041-0/+3
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* Added copyright notice.Guido van Rossum1991-02-191-0/+24
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* "Compiling" versionGuido van Rossum1990-12-201-1/+6
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* Added opcodes for classes.Guido van Rossum1990-11-181-0/+2
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