mirror of https://github.com/python/cpython
bpo-40528: Improve AST generation script to do builds simultaneously (GH-19968)
- Switch from getopt to argparse. - Removed the limitation of not being able to produce both C and H simultaneously. This will make it run faster since it parses the asdl definition once and uses the generated tree to generate both the header and the C source.
This commit is contained in:
Batuhan Taskaya
GitHub
parent
7b7a21bc4f
commit
63b8e0cba3
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@ -845,17 +845,15 @@ regen-pegen:
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.PHONY=regen-ast
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regen-ast:
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# Regenerate Include/Python-ast.h using Parser/asdl_c.py -h
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# Regenerate Include/Python-ast.h and Python/Python-ast.c using Parser/asdl_c.py
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$(MKDIR_P) $(srcdir)/Include
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$(PYTHON_FOR_REGEN) $(srcdir)/Parser/asdl_c.py \
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-h $(srcdir)/Include/Python-ast.h.new \
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$(srcdir)/Parser/Python.asdl
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$(UPDATE_FILE) $(srcdir)/Include/Python-ast.h $(srcdir)/Include/Python-ast.h.new
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# Regenerate Python/Python-ast.c using Parser/asdl_c.py -c
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$(MKDIR_P) $(srcdir)/Python
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$(PYTHON_FOR_REGEN) $(srcdir)/Parser/asdl_c.py \
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-c $(srcdir)/Python/Python-ast.c.new \
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$(srcdir)/Parser/Python.asdl
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$(srcdir)/Parser/Python.asdl \
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-H $(srcdir)/Include/Python-ast.h.new \
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-C $(srcdir)/Python/Python-ast.c.new
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$(UPDATE_FILE) $(srcdir)/Include/Python-ast.h $(srcdir)/Include/Python-ast.h.new
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$(UPDATE_FILE) $(srcdir)/Python/Python-ast.c $(srcdir)/Python/Python-ast.c.new
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.PHONY: regen-opcode
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@ -176,20 +176,15 @@
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<Warning Text="Pegen updated. You will need to rebuild pythoncore to see the changes." Condition="'@(_UpdatedParse)' != ''" />
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</Target>
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<Target Name="_RegenAST_H" AfterTargets="_RegenGrammar">
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<!-- Regenerate Include/Python-ast.h using Parser/asdl_c.py -h -->
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<Exec Command=""$(PythonExe)" "$(PySourcePath)Parser\asdl_c.py" -h "$(IntDir)Python-ast.h" "$(PySourcePath)Parser\Python.asdl"" />
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<!-- Regenerate Include/Python-ast.h and Python/Python-ast.c using Parser/asdl_c.py -h -->
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<Exec Command=""$(PythonExe)" "$(PySourcePath)Parser\asdl_c.py" "$(PySourcePath)Parser\Python.asdl" -H "$(IntDir)Python-ast.h" -C "$(IntDir)Python-ast.c"" />
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<Copy SourceFiles="$(IntDir)Python-ast.h" DestinationFiles="$(PySourcePath)Include\Python-ast.h">
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<Output TaskParameter="CopiedFiles" ItemName="_UpdatedH" />
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</Copy>
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<Warning Text="Python-ast.h updated. You will need to rebuild pythoncore to see the changes." Condition="'@(_UpdatedH)' != '' and '@(_UpdatedC)' != ''" />
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</Target>
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<Target Name="_RegenAST_C" AfterTargets="_RegenGrammar">
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<!-- Regenerate Python/Python-ast.c using Parser/asdl_c.py -c -->
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<Exec Command=""$(PythonExe)" "$(PySourcePath)Parser\asdl_c.py" -c "$(IntDir)Python-ast.c" "$(PySourcePath)Parser\Python.asdl"" />
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<Copy SourceFiles="$(IntDir)Python-ast.c" DestinationFiles="$(PySourcePath)Python\Python-ast.c">
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<Output TaskParameter="CopiedFiles" ItemName="_UpdatedH" />
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<Output TaskParameter="CopiedFiles" ItemName="_UpdatedC" />
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</Copy>
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<Warning Text="Python-ast.c updated. You will need to rebuild pythoncore to see the changes." Condition="'@(_UpdatedH)' != '' and '@(_UpdatedC)' != ''" />
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<Warning Text="ASDL is updated. You will need to rebuild pythoncore to see the changes." Condition="'@(_UpdatedH)' != '' and '@(_UpdatedC)' != ''" />
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</Target>
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<Target Name="_RegenOpcodes" AfterTargets="_RegenAST_C">
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<!-- Regenerate Include/opcode.h from Lib/opcode.py using Tools/scripts/generate_opcode_h.py-->
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152
Parser/asdl_c.py
152
Parser/asdl_c.py
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@ -1,12 +1,17 @@
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#! /usr/bin/env python
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"""Generate C code from an ASDL description."""
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import os, sys
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import os
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import sys
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from argparse import ArgumentParser
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from pathlib import Path
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import asdl
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TABSIZE = 4
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MAX_COL = 80
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AUTOGEN_MESSAGE = "/* File automatically generated by {}. */\n\n"
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def get_c_type(name):
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"""Return a string for the C name of the type.
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@ -1369,94 +1374,77 @@ static struct PyModuleDef _astmodule = {
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f.write(' return 1;\n')
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f.write('};\n\n')
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def write_header(f, mod):
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f.write('#ifndef Py_PYTHON_AST_H\n')
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f.write('#define Py_PYTHON_AST_H\n')
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f.write('#ifdef __cplusplus\n')
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f.write('extern "C" {\n')
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f.write('#endif\n')
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f.write('\n')
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f.write('#ifndef Py_LIMITED_API\n')
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f.write('#include "asdl.h"\n')
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f.write('\n')
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f.write('#undef Yield /* undefine macro conflicting with <winbase.h> */\n')
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f.write('\n')
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c = ChainOfVisitors(TypeDefVisitor(f),
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StructVisitor(f))
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c.visit(mod)
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f.write("// Note: these macros affect function definitions, not only call sites.\n")
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PrototypeVisitor(f).visit(mod)
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f.write("\n")
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f.write("PyObject* PyAST_mod2obj(mod_ty t);\n")
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f.write("mod_ty PyAST_obj2mod(PyObject* ast, PyArena* arena, int mode);\n")
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f.write("int PyAST_Check(PyObject* obj);\n")
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f.write("#endif /* !Py_LIMITED_API */\n")
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f.write('\n')
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f.write('#ifdef __cplusplus\n')
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f.write('}\n')
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f.write('#endif\n')
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f.write('#endif /* !Py_PYTHON_AST_H */\n')
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common_msg = "/* File automatically generated by %s. */\n\n"
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def write_source(f, mod):
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f.write('#include <stddef.h>\n')
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f.write('\n')
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f.write('#include "Python.h"\n')
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f.write('#include "%s-ast.h"\n' % mod.name)
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f.write('#include "structmember.h" // PyMemberDef\n')
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f.write('\n')
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def main(srcfile, dump_module=False):
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argv0 = sys.argv[0]
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components = argv0.split(os.sep)
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# Always join with '/' so different OS does not keep changing the file
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argv0 = '/'.join(components[-2:])
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auto_gen_msg = common_msg % argv0
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mod = asdl.parse(srcfile)
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generate_module_def(f, mod)
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v = ChainOfVisitors(
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PyTypesDeclareVisitor(f),
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PyTypesVisitor(f),
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Obj2ModPrototypeVisitor(f),
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FunctionVisitor(f),
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ObjVisitor(f),
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Obj2ModVisitor(f),
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ASTModuleVisitor(f),
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PartingShots(f),
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)
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v.visit(mod)
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def main(input_file, c_file, h_file, dump_module=False):
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auto_gen_msg = AUTOGEN_MESSAGE.format("/".join(Path(__file__).parts[-2:]))
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mod = asdl.parse(input_file)
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if dump_module:
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print('Parsed Module:')
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print(mod)
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if not asdl.check(mod):
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sys.exit(1)
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if H_FILE:
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with open(H_FILE, "w") as f:
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f.write(auto_gen_msg)
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f.write('#ifndef Py_PYTHON_AST_H\n')
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f.write('#define Py_PYTHON_AST_H\n')
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f.write('#ifdef __cplusplus\n')
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f.write('extern "C" {\n')
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f.write('#endif\n')
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f.write('\n')
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f.write('#ifndef Py_LIMITED_API\n')
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f.write('#include "asdl.h"\n')
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f.write('\n')
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f.write('#undef Yield /* undefine macro conflicting with <winbase.h> */\n')
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f.write('\n')
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c = ChainOfVisitors(TypeDefVisitor(f),
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StructVisitor(f))
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c.visit(mod)
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f.write("// Note: these macros affect function definitions, not only call sites.\n")
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PrototypeVisitor(f).visit(mod)
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f.write("\n")
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f.write("PyObject* PyAST_mod2obj(mod_ty t);\n")
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f.write("mod_ty PyAST_obj2mod(PyObject* ast, PyArena* arena, int mode);\n")
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f.write("int PyAST_Check(PyObject* obj);\n")
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f.write("#endif /* !Py_LIMITED_API */\n")
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f.write('\n')
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f.write('#ifdef __cplusplus\n')
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f.write('}\n')
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f.write('#endif\n')
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f.write('#endif /* !Py_PYTHON_AST_H */\n')
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if C_FILE:
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with open(C_FILE, "w") as f:
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f.write(auto_gen_msg)
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f.write('#include <stddef.h>\n')
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f.write('\n')
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f.write('#include "Python.h"\n')
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f.write('#include "%s-ast.h"\n' % mod.name)
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f.write('#include "structmember.h" // PyMemberDef\n')
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f.write('\n')
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generate_module_def(f, mod)
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v = ChainOfVisitors(
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PyTypesDeclareVisitor(f),
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PyTypesVisitor(f),
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Obj2ModPrototypeVisitor(f),
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FunctionVisitor(f),
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ObjVisitor(f),
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Obj2ModVisitor(f),
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ASTModuleVisitor(f),
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PartingShots(f),
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)
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v.visit(mod)
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for file, writer in (c_file, write_source), (h_file, write_header):
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if file is not None:
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with file.open("w") as f:
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f.write(auto_gen_msg)
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writer(f, mod)
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print(file, "regenerated.")
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if __name__ == "__main__":
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import getopt
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parser = ArgumentParser()
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parser.add_argument("input_file", type=Path)
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parser.add_argument("-C", "--c-file", type=Path, default=None)
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parser.add_argument("-H", "--h-file", type=Path, default=None)
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parser.add_argument("-d", "--dump-module", action="store_true")
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H_FILE = ''
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C_FILE = ''
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dump_module = False
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opts, args = getopt.getopt(sys.argv[1:], "dh:c:")
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for o, v in opts:
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if o == '-h':
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H_FILE = v
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elif o == '-c':
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C_FILE = v
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elif o == '-d':
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dump_module = True
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if H_FILE and C_FILE:
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print('Must specify exactly one output file')
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sys.exit(1)
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elif len(args) != 1:
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print('Must specify single input file')
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sys.exit(1)
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main(args[0], dump_module)
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options = parser.parse_args()
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main(**vars(options))
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