python27-sys: Add struct definitions for PyCodeObject and PyFrameObject.

Closes #21.

python27-sys/src/ceval.rs

@@ -1,7 +1,8 @@
 use libc::{c_void, c_char, c_int};
 use pyport::Py_ssize_t;
 use object::PyObject;
-use pystate::{PyFrameObject, PyThreadState, Py_tracefunc};
+use frameobject::PyFrameObject;
+use pystate::{PyThreadState, Py_tracefunc};
 use pythonrun::PyCompilerFlags;
 
 extern "C" {

python27-sys/src/code.rs

@@ -1,8 +1,33 @@
-use libc::{c_char, c_int};
+use libc::{c_char, c_int, c_void};
+use pyport::Py_ssize_t;
 use object::*;
 
-#[allow(missing_copy_implementations)]
-pub enum PyCodeObject { /* hidden representation */ }
+#[repr(C)]
+#[derive(Copy, Clone)]
+pub struct PyCodeObject {
+    #[cfg(py_sys_config="Py_TRACE_REFS")]
+    pub _ob_next: *mut PyObject,
+    #[cfg(py_sys_config="Py_TRACE_REFS")]
+    pub _ob_prev: *mut PyObject,
+    pub ob_refcnt: Py_ssize_t,
+    pub ob_type: *mut PyTypeObject,
+    pub co_argcount: c_int,
+    pub co_nlocals: c_int,
+    pub co_stacksize: c_int,
+    pub co_flags: c_int,
+    pub co_code: *mut PyObject,
+    pub co_consts: *mut PyObject,
+    pub co_names: *mut PyObject,
+    pub co_varnames: *mut PyObject,
+    pub co_freevars: *mut PyObject,
+    pub co_cellvars: *mut PyObject,
+    pub co_filename: *mut PyObject,
+    pub co_name: *mut PyObject,
+    pub co_firstlineno: c_int,
+    pub co_lnotab: *mut PyObject,
+    pub co_zombieframe: *mut c_void,
+    pub co_weakreflist: *mut PyObject,
+}
 
 /* Masks for co_flags */
 pub const CO_OPTIMIZED : c_int = 0x0001;
@@ -24,6 +49,8 @@ pub const CO_FUTURE_WITH_STATEMENT : c_int = 0x8000;
 pub const CO_FUTURE_PRINT_FUNCTION : c_int = 0x10000;
 pub const CO_FUTURE_UNICODE_LITERALS : c_int = 0x20000;
 
+pub const CO_MAXBLOCKS : usize = 20;
+
 extern "C" {
     pub static mut PyCode_Type: PyTypeObject;
     
@@ -50,7 +77,11 @@ extern "C" {
 
 #[inline(always)]
 pub unsafe fn PyCode_Check(op : *mut PyObject) -> c_int {
-    let u : *mut PyTypeObject = &mut PyCode_Type;
-    (Py_TYPE(op) == u) as c_int
+    (Py_TYPE(op) == &mut PyCode_Type) as c_int
+}
+
+#[inline]
+pub unsafe fn PyCode_GetNumFree(op : *mut PyCodeObject) -> Py_ssize_t {
+    ::tupleobject::PyTuple_GET_SIZE((*op).co_freevars)
 }
 

python27-sys/src/frameobject.rs

@@ -0,0 +1,82 @@
+use libc::c_int;
+use object::*;
+use pyport::Py_ssize_t;
+use code::{PyCodeObject, CO_MAXBLOCKS};
+use pystate::PyThreadState;
+
+#[repr(C)]
+#[derive(Copy, Clone)]
+pub struct PyTryBlock {
+    pub b_type : c_int,
+    pub b_handler : c_int,
+    pub b_level : c_int,
+}
+
+#[repr(C)]
+#[derive(Copy, Clone)]
+pub struct PyFrameObject {
+    #[cfg(py_sys_config="Py_TRACE_REFS")]
+    pub _ob_next: *mut PyObject,
+    #[cfg(py_sys_config="Py_TRACE_REFS")]
+    pub _ob_prev: *mut PyObject,
+    pub ob_refcnt: Py_ssize_t,
+    pub ob_type: *mut PyTypeObject,
+    pub ob_size: Py_ssize_t,
+    pub f_back: *mut PyFrameObject,	/* previous frame, or NULL */
+    pub f_code: *mut PyCodeObject,	/* code segment */
+    pub f_builtins: *mut PyObject,	/* builtin symbol table (PyDictObject) */
+    pub f_globals: *mut PyObject,	/* global symbol table (PyDictObject) */
+    pub f_locals: *mut PyObject,		/* local symbol table (any mapping) */
+    pub f_valuestack: *mut *mut PyObject,	/* points after the last local */
+    /* Next free slot in f_valuestack.  Frame creation sets to f_valuestack.
+       Frame evaluation usually NULLs it, but a frame that yields sets it
+       to the current stack top. */
+    pub f_stacktop: *mut *mut PyObject,
+    pub f_trace: *mut PyObject,		/* Trace function */
+
+    pub f_exc_type: *mut PyObject,
+    pub f_exc_value: *mut PyObject,
+    pub f_exc_traceback: *mut PyObject,
+
+    pub f_tstate: *mut PyThreadState,
+
+    pub f_lasti: c_int,		/* Last instruction if called */
+    /* Call PyFrame_GetLineNumber() instead of reading this field
+       directly.  As of 2.3 f_lineno is only valid when tracing is
+       active (i.e. when f_trace is set).  At other times we use
+       PyCode_Addr2Line to calculate the line from the current
+      bytecode index. */
+    pub f_lineno: c_int,		/* Current line number */
+    pub f_iblock: c_int,		/* index in f_blockstack */
+    pub f_blockstack: [PyTryBlock; CO_MAXBLOCKS], /* for try and loop blocks */
+    pub f_localsplus: [*mut PyObject; 1]	/* locals+stack, dynamically sized */
+}
+
+extern "C" {
+    pub static mut PyFrame_Type: PyTypeObject;
+}
+
+#[inline]
+pub unsafe fn PyFrame_Check(op: *mut PyObject) -> c_int {
+     ((*op).ob_type == &mut PyFrame_Type) as c_int
+}
+
+//#[inline]
+//pub unsafe fn PyFrame_IsRestricted(f: *mut PyFrameObject) -> c_int {
+//     ((*f).f_builtins != (*(*(*f).f_tstate).interp).builtins) as c_int
+//}
+
+extern "C" {
+    pub fn PyFrame_New(tstate: *mut PyThreadState, code: *mut PyCodeObject,
+        globals: *mut PyObject, locals: *mut PyObject) -> *mut PyFrameObject;
+
+    pub fn PyFrame_BlockSetup(f: *mut PyFrameObject, _type: c_int, handler: c_int, level: c_int) -> ();
+    pub fn PyFrame_BlockPop(f: *mut PyFrameObject) -> *mut PyTryBlock;
+
+    pub fn PyFrame_LocalsToFast(f: *mut PyFrameObject, clear: c_int) -> ();
+    pub fn PyFrame_FastToLocals(f: *mut PyFrameObject) -> ();
+    
+    pub fn PyFrame_ClearFreeList() -> c_int;
+    pub fn PyFrame_GetLineNumber(f: *mut PyFrameObject) -> c_int;
+}
+

python27-sys/src/genobject.rs

@@ -1,6 +1,7 @@
 use libc::c_int;
 use pyport::Py_ssize_t;
 use object::*;
+use frameobject::PyFrameObject;
 
 #[repr(C)]
 #[derive(Copy, Clone)]
@@ -11,7 +12,7 @@ pub struct PyGenObject {
     pub _ob_prev: *mut PyObject,
     pub ob_refcnt: Py_ssize_t,
     pub ob_type: *mut PyTypeObject,
-    pub gi_frame: *mut ::PyFrameObject,
+    pub gi_frame: *mut PyFrameObject,
     pub gi_running: c_int,
     pub gi_code: *mut PyObject,
     pub gi_weakreflist: *mut PyObject
@@ -32,7 +33,7 @@ pub unsafe fn PyGen_CheckExact(op: *mut PyObject) -> c_int {
 }
 
 extern "C" {
-    pub fn PyGen_New(frame: *mut ::PyFrameObject) -> *mut PyObject;
+    pub fn PyGen_New(frame: *mut PyFrameObject) -> *mut PyObject;
     pub fn PyGen_NeedsFinalizing(op: *mut PyGenObject) -> c_int;
 }
 

python27-sys/src/lib.rs

@@ -53,6 +53,7 @@ pub use code::*;
 pub use compile::*;
 pub use eval::*;
 pub use structmember::PyMemberDef;
+pub use frameobject::PyFrameObject;
 
 mod pyport;
 mod pymem;
@@ -121,6 +122,7 @@ mod eval;
 
 // Additional headers that are not exported by Python.h
 pub mod structmember;
+pub mod frameobject;
 
 pub const Py_single_input: libc::c_int = 256;
 pub const Py_file_input: libc::c_int = 257;

python27-sys/src/pystate.rs

@@ -1,12 +1,9 @@
 use libc::{c_int, c_long};
 use object::PyObject;
+use frameobject::PyFrameObject;
 
-#[allow(missing_copy_implementations)]
 pub enum PyInterpreterState { }
 
-#[allow(missing_copy_implementations)]
-pub enum PyFrameObject { }
-
 pub type Py_tracefunc =
     unsafe extern "C" fn
                               (arg1: *mut PyObject, arg2: *mut PyFrameObject,

python27-sys/src/traceback.rs

@@ -1,6 +1,7 @@
 use libc::c_int;
 use object::*;
 use pyport::Py_ssize_t;
+use frameobject::PyFrameObject;
 
 #[repr(C)]
 #[derive(Copy, Clone)]
@@ -12,13 +13,13 @@ pub struct PyTracebackObject {
     pub ob_refcnt: Py_ssize_t,
     pub ob_type: *mut PyTypeObject,
     pub tb_next: *mut PyTracebackObject,
-    pub tb_frame: *mut ::PyFrameObject,
+    pub tb_frame: *mut PyFrameObject,
     pub tb_lasti: c_int,
     pub tb_lineno: c_int
 }
 
 extern "C" {
-    pub fn PyTraceBack_Here(arg1: *mut ::PyFrameObject) -> c_int;
+    pub fn PyTraceBack_Here(arg1: *mut PyFrameObject) -> c_int;
     pub fn PyTraceBack_Print(arg1: *mut PyObject, arg2: *mut PyObject)
      -> c_int;