Commit Graph

133 Commits

Author SHA1 Message Date
Andrew M. Kuchling 264e8186d5 Fix comment typo 2001-09-27 04:18:36 +00:00
Jeremy Hylton 9dca36432e API change:
compile() becomes replacement for builtin compile()
compileFile() generates a .pyc from a .py
both are exported in __init__

compiler.parse() gets optional second argument to specify compilation
mode, e.g. single, eval, exec

Add AbstractCompileMode as parent class and Module, Expression, and
Interactive as concrete subclasses.  Each corresponds to a compilation
mode.

THe AbstractCompileMode instances in turn delegate to CodeGeneration
subclasses specialized for their particular functions --
ModuleCodeGenerator, ExpressionCodeGeneration,
InteractiveCodeGenerator.
2001-09-17 21:02:51 +00:00
Jeremy Hylton c8ed18a4e3 Re-created after change to astgen to calculate hardest_arg correctly 2001-09-17 20:17:02 +00:00
Jeremy Hylton 2e4cc7e0d8 Last set of change to get regression tests to pass
Remove the only test in the syntax module.  It ends up that the
transformer must handle this error case.

In the transformer, check for a list compression in com_assign_list()
by looking for a list_for node where a comma is expected.

In pycodegen.compile() re-raise the SyntaxError rather than catching
it and exiting
2001-09-17 19:33:48 +00:00
Jeremy Hylton 37c9351cf6 Handle more syntax errors.
Invoke compiler.syntax.check() after building AST.  If a SyntaxError
occurs, print the error and exit without generating a .pyc file.

Refactor code to use compiler.misc.set_filename() rather than passing
filename argument around to each CodeGenerator instance.
2001-09-17 18:03:55 +00:00
Jeremy Hylton 09392b77a4 Add utility to set filename attribute on all nodes 2001-09-17 18:02:21 +00:00
Jeremy Hylton aee0bfedcc support true division 2001-09-17 16:41:02 +00:00
Jeremy Hylton 1048aa933f Add code generator for yield stmt 2001-09-14 23:17:55 +00:00
Jeremy Hylton 6a9cac68b6 del no longer necessary now that new module is gone 2001-09-14 22:54:48 +00:00
Jeremy Hylton 1e99a77120 Various sundry changes for 2.2 compatibility
Remove the option to have nested scopes or old LGB scopes.  This has a
large impact on the code base, by removing the need for two variants
of each CodeGenerator.

Add a get_module() method to CodeGenerator objects, used to get the
future features for the current module.

Set CO_GENERATOR, CO_GENERATOR_ALLOWED, and CO_FUTURE_DIVISION flags
as appropriate.

Attempt to fix the value of nlocals in newCodeObject(), assuming that
nlocals is 0 if CO_NEWLOCALS is not defined.
2001-09-14 22:49:08 +00:00
Jeremy Hylton 652a22437a The object-being sliced in an assignment to a slice is referenced, not
bound.

When a Yield() node is visited, assign to the generator attribute of
the scope, not the visitor.
2001-09-14 22:45:57 +00:00
Jeremy Hylton 9ee78f7d61 the new new doesn't define CO_xxx as the old new did 2001-09-14 22:44:35 +00:00
Jeremy Hylton fff252d20d the names attribute of Global is not a node 2001-09-14 22:40:36 +00:00
Jeremy Hylton 71ebc3359b Fix _convert_NAME() so that it doesn't store locals for class bodies.
Fix list comp code generation -- emit GET_ITER instead of Const(0)
after the list.

Add CO_GENERATOR flag to generators.

Get CO_xxx flags from the new module
2001-08-30 20:25:55 +00:00
Jeremy Hylton f71b5fec43 spurious pop 2001-08-30 15:50:34 +00:00
Jeremy Hylton e4685ec57e Track the block stack more reasonably in order to handle continue in
try/except or try/finally.

Previous versions had only track SETUP_LOOP blocks and ignored the
exception part.  This meant that it allowed continue inside a
try/except but generated buggy code.  Now it does the right thing.
2001-08-29 22:30:09 +00:00
Jeremy Hylton 9263848fa1 Improve stack depth computation for try/except and try/finally
Add CONTINUE_LOOP to the list of unconditional transfers
2001-08-29 22:27:14 +00:00
Jeremy Hylton 4bd4dddd55 Add __getitem__() handler for use by visitContinue() 2001-08-29 22:26:35 +00:00
Jeremy Hylton 1936745668 Generate SET_LINENO for list and tuple literals when the open paren
starts a new line.

Also fix undetected typo in visitDict() -- uncovered by recent change
to add lineno attrs to atoms.
2001-08-29 20:57:43 +00:00
Jeremy Hylton 7845cf8d37 Make sure that atoms (Tuple, List, etc.) have lineno attributes 2001-08-29 20:56:30 +00:00
Jeremy Hylton 4ba9001f5c Fix off-by-one errors in code to find depth of stack.
XXX The code is still widely inaccurate, but most (all?) of the time
it's an overestimate.
2001-08-29 20:55:17 +00:00
Jeremy Hylton bf77c465bd Undo change from list to dict for handling varnames, consts, etc.
As the doc string for _lookupName() explains:

    This routine uses a list instead of a dictionary, because a
    dictionary can't store two different keys if the keys have the
    same value but different types, e.g. 2 and 2L.  The compiler
    must treat these two separately, so it does an explicit type
    comparison before comparing the values.
2001-08-29 19:45:33 +00:00
Jeremy Hylton 5a9ac97040 Change default() to use getChildNodes() instead of getChildren() 2001-08-29 18:17:22 +00:00
Jeremy Hylton 94afe32b5e Support // and //=
Generate SET_LINENO for del statements.

Define klass=1 for PyFlowGraph constructor for a class statement.  A
class has no varnames.
2001-08-29 18:14:39 +00:00
Jeremy Hylton 7abf520d6c Add support for // and //=.
Avoid if/elif/elif/else tests where the final else is supposed to
handle exactly one case instead of all other cases.  When the list of
operators is extended, the catchall else treats all new operators as
the last operator in the set of tests.  Instead, raise an exception if
an unexpected operator occurs.
2001-08-29 18:12:30 +00:00
Jeremy Hylton d4be10dc2c Add generator detection to symbol table.
Fix bug in handling of statements like "l[x:y] = 2".  The visitor was
treating this as assignments to l, x, and y!
2001-08-29 18:10:51 +00:00
Jeremy Hylton e4e9cd4c01 Modify name conversion to be (hopefully) a bit more efficient.
Use a dictionary instead of a list to map objects to their offsets in
a const/name tuple of a code object.

XXX The conversion is perhaps incomplete, in that we shouldn't have to
do the list2dict to start.
2001-08-29 18:09:50 +00:00
Jeremy Hylton 5477f529d6 Revise implementations of getChildren() and getChildNodes().
Add support for floor division (// and //=)

The implementation of getChildren() and getChildNodes() is intended to
be faster, because it avoids calling flatten() on every return value.
But it's not clear that it is a lot faster, because constructing a
tuple with just the right values ends up being slow.  (Too many
attribute lookups probably.)

The ast.txt file is much more complicated, with funny characters at
the ends of names (*, &, !) to indicate the types of each child node.

The astgen script is also much more complex, making me wonder if it's
still useful.
2001-08-29 18:08:02 +00:00
Jeremy Hylton da8db8ca18 Don't include doc string of class in its code child 2001-08-29 17:19:02 +00:00
Jeremy Hylton 2ac9c3eec5 Make sure the JUMP_ABSOLUTE and POP_BLOCK at the end of a for loop are
contiguous.
2001-08-28 17:28:33 +00:00
Jeremy Hylton 63db7b9ca1 XXX_NAME ops should affect varnames
varnames should list all the local variables (with arguments first).
The XXX_NAME ops typically occur at the module level and assignment
ops should create locals.
2001-08-28 16:36:12 +00:00
Jeremy Hylton f354575328 Generate FOR_ITER-based loops instead of old FOR_LOOP-based loops 2001-08-28 16:35:18 +00:00
Jeremy Hylton c59e220000 Handle private names
(Hard to believe these were never handled before)

Add misc.mangle() that mangles based on the rules in compile.c.
XXX Need to test the corner cases

Update CodeGenerator with a class_name attribute bound to None.  If a
particular instance is created within a class scope, the instance's
class_name is bound to that class's name.

Add mangle() method to CodeGenerator that mangles if the class_name
has a class_name in it.

Modify the FunctionCodeGenerator family to handle an extra argument--
the class_name.

Wrap all name ops and attrnames in calls to self.mangle()
2001-08-27 22:56:16 +00:00
Jeremy Hylton 80ea40d858 emit SET_LINENO for augmented assignments 2001-08-27 21:58:09 +00:00
Jeremy Hylton 2afff324ea Many changes -- bug fixes and sundry improvements
Make nested scopes enabled by default

Add is_constant_false() helper so that compiled code and symbols are
consistent with builtin compiler's handling of "if 0:"

Fix doc string handling to be consistent with recent change that
eliminates the doc string from the Module's node attribute.

Add fix to print handling from Evan & Shane.

Track change to visitor api by making "verbose" explicit.

Comment out setting CO_NESTED flag (it's unnecessary in 2.2).
2001-08-27 21:51:52 +00:00
Jeremy Hylton cd8a127e1a Fix for sibling nodes that define the same free variable
Evan Simpson's fix.  And his explanation:

    If you defined two nested functions in a row that refer to the
    same non-global variable, the second one will be generated as
    though the variable were global.
2001-08-27 21:06:35 +00:00
Jeremy Hylton 7e30c9bb5a Add lookup_name() to optimize use of stack frames
The use of com_node() introduces a lot of extra stack frames, enough
to cause a stack overflow compiling test.test_parser with the standard
interpreter recursionlimit.  The com_node() is a convenience function
that hides the dispatch details, but comes at a very high cost.  It is
more efficient to dispatch directly in the callers.  In these cases,
use lookup_node() and call the dispatched node directly.

Also handle yield_stmt in a way that will work with Python 2.1
(suggested by Shane Hathaway)
2001-08-27 21:02:51 +00:00
Jeremy Hylton 058a5adad0 Two changes to visitor API:
Remove _preorder as alias for dispatch and call dispatch directly.
    Add an extra optional argument to walk()

XXX Also comment out some code that does debugging prints.
2001-08-27 20:47:08 +00:00
Jeremy Hylton ab427b8cce Generate correct reprs for Mul, Add, etc. 2001-08-18 00:14:37 +00:00
Jeremy Hylton ec5bfd13ca Track removal of doc string from Module().nodes[0] 2001-08-18 00:07:46 +00:00
Jeremy Hylton 8548f9b183 Add Yield() node 2001-08-18 00:07:14 +00:00
Jeremy Hylton ec927348c2 Add Yield() statement handler
Fix Module() handler to avoid including the doc string in the AST
2001-08-18 00:04:31 +00:00
Jeremy Hylton 9272b14d62 Fix typo in astgen script 2001-08-14 21:18:30 +00:00
Jeremy Hylton 7713ac2ff1 Regenerated from new ast.txt and new astgen.py 2001-08-14 18:59:01 +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
Jeremy Hylton bb0bae6da2 Pop loop off the loop stack before handling the loop's else clause.
Otherwise, continue/break will attempt to affect the wrong loop.

A few more fiddles to get the SET_LINENOs consistent across compilers.
2001-04-12 21:54:41 +00:00
Jeremy Hylton 13d70944cb Use new _implicitNameOp() to generate name op code for list comprehensions.
Always emit a SET_LINENO 0 at the beginning of the module.  The
builtin compiler does this, and it's much easier to compare bytecode
generated by the two compilers if they both do.

Move the SET_LINENO inside the FOR_LOOP block for list
comprehensions.  Also for compat. with builtin compiler.
2001-04-12 21:04:43 +00:00
Jeremy Hylton 614e87f286 Add support for visitAssAttr to findOp(). 2001-04-12 20:24:26 +00:00
Jeremy Hylton 542b11acfd pyassem.py:
Fix annoying bugs in flow graph layout code.  In some cases the
    implicit control transfers weren't honored.  In other cases,
    JUMP_FORWARD instructions jumped backwards.

    Remove unused arg from nextBlock().

pycodegen.py

    Add optional force kwarg to set_lineno() that will emit a
    SET_LINENO even if it is the same as the previous lineno.

    Use explicit LOAD_FAST and STORE_FAST to access list comp implicit
    variables.  (The symbol table doesn't know about them.)
2001-04-12 20:21:39 +00:00
Jeremy Hylton bfb0cf822b Revise handling of tuple arguments so that the variables names match
those used by compile.c.  (test_grammar now depends on the names)
2001-04-12 17:33:34 +00:00