From f125e00e37bc7c5c7826a01b5a7d3e7c9d3aa964 Mon Sep 17 00:00:00 2001 From: Michael Gottesman Date: Tue, 10 Sep 2013 06:57:57 +0000 Subject: [PATCH] [python bindings] Added code to get the length of a memory buffer. Tests are included. This is a part of a series of patches that have been sitting fallow on a personal branch that I have been messing with for a bit. The patches start to flesh out the python llvm-c wrapper to the point where you can: 1. Load Modules from Bitcode/Dump/Print them. 2. Iterate over Functions from those modules/get their names/dump them. 3. Iterate over the BasicBlocks from said function/get the BB's name/dump it. 4. Iterate over the Instructions in said BasicBlocks/get the instructions name/dump the instruction. My main interest in developing this was to be able to gather statistics about LLVM IR using python scripts to speed up statistical profiling of different IR level transformations (hence the focus on printing/dumping/getting names). This is a gift from me to the LLVM community = ). I am going to be committing the patches slowly over the next bit as I have time to prepare the patches. The overall organization follows the c-api like the bindings that are already implemented. llvm-svn: 190388 --- llvm/bindings/python/llvm/core.py | 6 ++++++ llvm/bindings/python/llvm/tests/base.py | 3 +++ llvm/bindings/python/llvm/tests/test_core.py | 4 ++++ llvm/bindings/python/llvm/tests/test_file | 1 + 4 files changed, 14 insertions(+) create mode 100644 llvm/bindings/python/llvm/tests/test_file diff --git a/llvm/bindings/python/llvm/core.py b/llvm/bindings/python/llvm/core.py index 67566374256e..bd61a6ac993e 100644 --- a/llvm/bindings/python/llvm/core.py +++ b/llvm/bindings/python/llvm/core.py @@ -83,11 +83,17 @@ class MemoryBuffer(LLVMObject): LLVMObject.__init__(self, memory, disposer=lib.LLVMDisposeMemoryBuffer) + def __len__(self): + return lib.LLVMGetBufferSize(self) + def register_library(library): + # Memory buffer declarations library.LLVMCreateMemoryBufferWithContentsOfFile.argtypes = [c_char_p, POINTER(c_object_p), POINTER(c_char_p)] library.LLVMCreateMemoryBufferWithContentsOfFile.restype = bool + library.LLVMGetBufferSize.argtypes = [MemoryBuffer] + library.LLVMDisposeMemoryBuffer.argtypes = [MemoryBuffer] def register_enumerations(): diff --git a/llvm/bindings/python/llvm/tests/base.py b/llvm/bindings/python/llvm/tests/base.py index ff9eb2fc1438..22da5fdbdd09 100644 --- a/llvm/bindings/python/llvm/tests/base.py +++ b/llvm/bindings/python/llvm/tests/base.py @@ -30,3 +30,6 @@ class TestBase(unittest.TestCase): raise Exception('No suitable test binaries available!') get_test_binary.__test__ = False + + def get_test_file(self): + return os.path.join(os.path.dirname(os.path.abspath(__file__)), "test_file") diff --git a/llvm/bindings/python/llvm/tests/test_core.py b/llvm/bindings/python/llvm/tests/test_core.py index 545abc826ea7..699f3105e81b 100644 --- a/llvm/bindings/python/llvm/tests/test_core.py +++ b/llvm/bindings/python/llvm/tests/test_core.py @@ -21,3 +21,7 @@ class TestCore(TestBase): with self.assertRaises(Exception): MemoryBuffer(filename="/hopefully/this/path/doesnt/exist") + def test_memory_buffer_len(self): + source = self.get_test_file() + m = MemoryBuffer(filename=source) + self.assertEqual(len(m), 50) diff --git a/llvm/bindings/python/llvm/tests/test_file b/llvm/bindings/python/llvm/tests/test_file new file mode 100644 index 000000000000..6c9b0385bd97 --- /dev/null +++ b/llvm/bindings/python/llvm/tests/test_file @@ -0,0 +1 @@ +I,"cAGxqԐdvl\L>g>``wɩ \ No newline at end of file