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# ========================== begin_copyright_notice ============================
#
# Copyright (C) 2017-2023 Intel Corporation
#
# SPDX-License-Identifier: MIT
#
# =========================== end_copyright_notice =============================
import os
import sys
import errno
import re
from typing import List, Tuple, TextIO, Callable, Generator
class DeclHeader:
# line contains the entire string of the line the decl was found on
line: str
# declName is just the identifier name
declName: str
# declName is just the identifier name
namespace: str
# fields contains a list of all the names of the fields in the structure
fields: List[str]
def __init__(self, line: str, namespace: str, declName: str, fields: List[str]):
self.line = line
self.namespace = namespace
self.declName = declName
self.fields = fields
enumNames: List[DeclHeader] = []
structureNames: List[DeclHeader] = []
def parseCmdArgs() -> Tuple[str, str]:
if (len(sys.argv) != 3):
sys.exit("usage: autogen.py <path_to_MDFrameWork.h> <path_to_MDNodeFuncs.gen>")
__MDFrameWorkFile__ = sys.argv[1]
__genFile__ = sys.argv[2]
if not os.path.isfile(__MDFrameWorkFile__):
sys.exit(f"Could not find the file {__MDFrameWorkFile__}")
__genDir__ = os.path.dirname(__genFile__)
if not os.path.exists(__genDir__):
try:
os.makedirs(__genDir__)
except OSError as err:
if err.errno != errno.EEXIST:
sys.exit(f"Failed to create the directory {__genDir__}")
return __MDFrameWorkFile__ , __genFile__
def extractStructField(line: str, declHeader: DeclHeader):
if line.strip() == '':
return
vars = line.split()
if "=" in line:
declHeader.fields.append(vars[vars.index("=") - 1] + ";")
else:
declHeader.fields.append(vars[-1])
def extractEnumVal(line: str, declHeader: DeclHeader):
vars = line.split()
if len(vars) == 0 or "{" in line:
return
val = vars[0]
if val[-1] == ',':
val = val[:-1]
declHeader.fields.append(val)
def lines(s: str) -> Generator[str, None, None]:
for line in s.split('\n'):
yield line
def parseHeader(fileContents: str):
namespace = ""
pcount = 0
file = lines(fileContents)
for line in file:
line = line.split("//")[0]
if "namespace" in line:
words = line.split()
while "{" not in line:
line = next(file, None)
if line is None:
sys.exit('missing opening brace!')
namespace = words[1] if len(words) > 1 else ""
pcount += 1
blockType = re.search("struct|enum", line)
if blockType:
words = line.split()
idx = 2 if blockType[0] == 'enum' and ('class' in words or 'struct' in words) else 1
foundDecl = DeclHeader(line, namespace, words[idx], [])
opcount = pcount
namesList = structureNames
extractFunc = extractStructField
if blockType[0] == 'enum':
namesList = enumNames
extractFunc = extractEnumVal
while True:
line = next(file, None)
if line is None:
sys.exit(f"EOF reached with unclosed enum or struct, check formatting")
line = line.split("//")[0]
pcount += line.count("{") - line.count("}")
if pcount <= opcount:
break
extractFunc(re.sub("{|}","", line), foundDecl)
assert pcount == opcount, f"Unexpected struct/enum ending, check formatting"
namesList.append(foundDecl)
elif "}" in line and "};" not in line:
insideIGCNameSpace = False
pcount -= 1
assert pcount == 0, f"EOF reached, with unclosed namespace, check formatting"
def stripBlockComments(text: str) -> str:
return re.sub(r'/\*(.|\s)*?\*/', '', text)
def expandIncludes(fileName: str) -> str:
try:
file = open(fileName, 'r')
except:
sys.exit(f"Failed to open the file {fileName}")
text = file.read()
while True:
# look for includes of the form: #include "myinclude.h" // ^MDFramework^
includes: List[Tuple[str, str]] = []
for m in re.finditer(r'#include\s+"(\S+)"\s*//\s*\^MDFramework\^:\s*(\S+)', text):
include_file = os.path.basename(m.group(1))
relative_path = m.group(2)
parent_dir = os.path.dirname(fileName)
include_file_path = os.path.normpath(
os.path.join(parent_dir, relative_path, include_file))
includes.append((m.group(0), include_file_path))
if len(includes) == 0:
break
for (include_string, include_path) in includes:
try:
file = open(include_path, 'r')
except:
sys.exit(f"Failed to open the file {include_path}")
include_contents = file.read()
text = text.replace(include_string, include_contents)
return text
def printStructCalls(structDecl: DeclHeader, outputFile: TextIO):
outputFile.write(" Metadata* v[] = \n")
outputFile.write(" { \n")
outputFile.write(" MDString::get(module->getContext(), name),\n")
for item in structDecl.fields:
item = item[:-1]
outputFile.write(f" CreateNode({structDecl.declName}Var.{item}, module, ")
outputFile.write(f'"{item}"')
outputFile.write("),\n")
outputFile.write(" };\n")
outputFile.write(" return MDNode::get(module->getContext(), v);\n")
def printEnumCalls(enumDecl: DeclHeader, outputFile: TextIO):
outputFile.write(" StringRef enumName;\n")
outputFile.write(f" switch({enumDecl.declName}Var)\n")
outputFile.write(" {\n")
for item in enumDecl.fields:
outputFile.write(f" case {enumDecl.namespace}::{enumDecl.declName}::{item}:\n")
outputFile.write(" enumName = ")
outputFile.write(f'"{item}"')
outputFile.write(";\n")
outputFile.write(" break;\n" )
outputFile.write(" }\n")
outputFile.write(" Metadata* v[] = \n")
outputFile.write(" { \n")
outputFile.write(" MDString::get(module->getContext(), name),\n")
outputFile.write(" MDString::get(module->getContext(), enumName),\n")
outputFile.write(" };\n")
outputFile.write(" return MDNode::get(module->getContext(), v);\n")
def printStructReadCalls(structDecl: DeclHeader, outputFile: TextIO):
for item in structDecl.fields:
item = item[:-1]
outputFile.write(f" readNode({structDecl.declName}Var.{item}, node, ")
outputFile.write(f'"{item}"')
outputFile.write(");\n")
def printEnumReadCalls(enumDecl: DeclHeader, outputFile: TextIO):
outputFile.write(" StringRef s = cast<MDString>(node->getOperand(1))->getString();\n")
first = True
for item in enumDecl.fields:
outputFile.write(f' {"" if first else "else "}if(s.compare(')
outputFile.write(f'"{item}"')
outputFile.write(") == 0)\n")
outputFile.write(" {\n")
outputFile.write(f" {enumDecl.declName}Var = {enumDecl.namespace}::{enumDecl.declName}::{item};\n")
outputFile.write(" }\n")
first = False
outputFile.write(" else\n")
outputFile.write(" {\n")
outputFile.write(f" {enumDecl.declName}Var = ({enumDecl.namespace}::{enumDecl.declName})(0);\n")
outputFile.write(" }\n")
def emitCodeBlock(names: List[DeclHeader], fmtFn: Callable[[str, str], str], printFn: Callable[[DeclHeader, TextIO], None], outputFile: TextIO):
for item in names:
outputFile.write(fmtFn(item.namespace, item.declName))
outputFile.write("{\n")
printFn(item, outputFile)
outputFile.write("}\n\n")
def emitEnumCreateNode(outputFile: TextIO):
def fmtFn(namespace:str, item: str):
return f"MDNode* CreateNode({namespace}::{item} {item}Var, Module* module, StringRef name)\n"
emitCodeBlock(enumNames, fmtFn, printEnumCalls, outputFile)
def emitStructCreateNode(outputFile: TextIO):
def fmtFn(namespace:str, item: str):
return f"MDNode* CreateNode(const {namespace}::{item}& {item}Var, Module* module, StringRef name)\n"
emitCodeBlock(structureNames, fmtFn, printStructCalls, outputFile)
def emitEnumReadNode(outputFile: TextIO):
def fmtFn(namespace:str, item: str):
return f"void readNode({namespace}::{item}& {item}Var, MDNode* node)\n"
emitCodeBlock(enumNames, fmtFn, printEnumReadCalls, outputFile)
def emitStructReadNode(outputFile: TextIO):
def fmtFn(namespace:str, item: str):
return f"void readNode({namespace}::{item}& {item}Var, MDNode* node)\n"
emitCodeBlock(structureNames, fmtFn, printStructReadCalls, outputFile)
def genCode(fileName: str):
try:
outputFile = open(fileName, 'w')
except:
sys.exit(f"Failed to open the file {fileName}")
emitEnumCreateNode(outputFile)
emitStructCreateNode(outputFile)
emitEnumReadNode(outputFile)
emitStructReadNode(outputFile)
if __name__ == '__main__':
__MDFrameWorkFile__ , __genFile__ = parseCmdArgs()
expansion = expandIncludes(__MDFrameWorkFile__)
expansion = stripBlockComments(expansion)
parseHeader(expansion)
genCode(__genFile__)
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