cpython

Commit Graph

Author	SHA1	Message	Date
Ivan Levkivskyi	9932a22897	bpo-33416: Add end positions to Python AST (GH-11605) The majority of this PR is tediously passing `end_lineno` and `end_col_offset` everywhere. Here are non-trivial points: * It is not possible to reconstruct end positions in AST "on the fly", some information is lost after an AST node is constructed, so we need two more attributes for every AST node `end_lineno` and `end_col_offset`. * I add end position information to both CST and AST. Although it may be technically possible to avoid adding end positions to CST, the code becomes more cumbersome and less efficient. * Since the end position is not known for non-leaf CST nodes while the next token is added, this requires a bit of extra care (see `_PyNode_FinalizeEndPos`). Unless I made some mistake, the algorithm should be linear. * For statements, I "trim" the end position of suites to not include the terminal newlines and dedent (this seems to be what people would expect), for example in ```python class C: pass pass ``` the end line and end column for the class definition is (2, 8). * For `end_col_offset` I use the common Python convention for indexing, for example for `pass` the `end_col_offset` is 4 (not 3), so that `[0:4]` gives one the source code that corresponds to the node. * I added a helper function `ast.get_source_segment()`, to get source text segment corresponding to a given AST node. It is also useful for testing. An (inevitable) downside of this PR is that AST now takes almost 25% more memory. I think however it is probably justified by the benefits.	7 years ago
Victor Stinner	5f2df88b63	bpo-35177: Add dependencies between header files (GH-10361) * ast.h now includes Python-ast.h and node.h * parsetok.h now includes node.h and grammar.h * symtable.h now includes Python-ast.h * Modify asdl_c.py to enhance Python-ast.h: * Add #ifndef/#define Py_PYTHON_AST_H to be able to include the header twice * Add "extern { ... }" for C++ * Undefine "Yield" macro conflicting with winbase.h * Remove "#undef Yield" from C files, it's now done in Python-ast.h * Remove now useless includes in C files	7 years ago
Serhiy Storchaka	3f22811fef	bpo-32892: Use ast.Constant instead of specific constant AST types. (GH-9445)	8 years ago
Serhiy Storchaka	143ce5c6db	bpo-33691: Add _PyAST_GetDocString(). (GH-7236)	8 years ago
Serhiy Storchaka	73cbe7a01a	bpo-32911: Revert bpo-29463. (GH-7121) (GH-7197) Remove the docstring attribute of AST types and restore docstring expression as a first stmt in their body. Co-authored-by: INADA Naoki <methane@users.noreply.github.com>	8 years ago
Serhiy Storchaka	3f7e9aa2ef	bpo-32925: Optimized iterating and containing test for literal lists (GH-5842) consisting of non-constants: `x in [a, b]` and `for x in [a, b]`. The case of all constant elements already was optimized.	8 years ago
Victor Stinner	05d68a8bd8	bpo-9566: Fix size_t=>int downcast warnings (#5230 ) * Use wider types (int => Py_ssize_t) to avoid integer overflows. * Fix gc.get_freeze_count(): use Py_ssize_t type rather than int, since gc_list_size() returns a Py_ssize_t.	8 years ago
Serhiy Storchaka	3dfbaf51f0	bpo-32372: Move __debug__ optimization to the AST level. (#4925 )	8 years ago
Serhiy Storchaka	2e3f570185	bpo-30416: Protect the optimizer during constant folding. (#4860 ) It no longer spends much time doing complex calculations and no longer consumes much memory for creating large constants that will be dropped later. This fixes also bpo-21074.	8 years ago
Serhiy Storchaka	15a8728415	bpo-29469: Optimize literal lists and sets iterating on the AST level. (#4866 )	8 years ago
INADA Naoki	7ea143ae79	bpo-29469: Move constant folding to AST optimizer (GH-2858)	8 years ago

11 Commits (b1c8ec010fb4eb2654ca994e95144c8f2fea07fb)