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* 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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* Satisfy Standard C rules about struct scope.Guido van Rossum1991-04-031-0/+1
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* Added copyright notice.Guido van Rossum1991-02-191-0/+24
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* "Compiling" versionGuido van Rossum1990-12-201-0/+23