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|
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import os
import sys
import json
import filecmp
import shutil
import argparse
class Generator(object):
implementationContent = ''
RefClades = {"DeclarationNameInfo",
"NestedNameSpecifierLoc",
"TemplateArgumentLoc",
"TypeLoc"}
def __init__(self, templateClasses):
self.templateClasses = templateClasses
def GeneratePrologue(self):
self.implementationContent += \
"""
/*===- Generated file -------------------------------------------*- C++ -*-===*\
|* *|
|* Introspection of available AST node SourceLocations *|
|* *|
|* Automatically generated file, do not edit! *|
|* *|
\*===----------------------------------------------------------------------===*/
namespace clang {
namespace tooling {
using LocationAndString = SourceLocationMap::value_type;
using RangeAndString = SourceRangeMap::value_type;
bool NodeIntrospection::hasIntrospectionSupport() { return true; }
struct RecursionPopper
{
RecursionPopper(std::vector<clang::TypeLoc> &TypeLocRecursionGuard)
: TLRG(TypeLocRecursionGuard)
{
}
~RecursionPopper()
{
TLRG.pop_back();
}
private:
std::vector<clang::TypeLoc> &TLRG;
};
"""
def GenerateBaseGetLocationsDeclaration(self, CladeName):
InstanceDecoration = "*"
if CladeName in self.RefClades:
InstanceDecoration = "&"
self.implementationContent += \
"""
void GetLocationsImpl(SharedLocationCall const& Prefix,
clang::{0} const {1}Object, SourceLocationMap &Locs,
SourceRangeMap &Rngs,
std::vector<clang::TypeLoc> &TypeLocRecursionGuard);
""".format(CladeName, InstanceDecoration)
def GenerateSrcLocMethod(self,
ClassName, ClassData, CreateLocalRecursionGuard):
NormalClassName = ClassName
RecursionGuardParam = ('' if CreateLocalRecursionGuard else \
', std::vector<clang::TypeLoc>& TypeLocRecursionGuard')
if "templateParms" in ClassData:
TemplatePreamble = "template <typename "
ClassName += "<"
First = True
for TA in ClassData["templateParms"]:
if not First:
ClassName += ", "
TemplatePreamble += ", typename "
First = False
ClassName += TA
TemplatePreamble += TA
ClassName += ">"
TemplatePreamble += ">\n";
self.implementationContent += TemplatePreamble
self.implementationContent += \
"""
static void GetLocations{0}(SharedLocationCall const& Prefix,
clang::{1} const &Object,
SourceLocationMap &Locs, SourceRangeMap &Rngs {2})
{{
""".format(NormalClassName, ClassName, RecursionGuardParam)
if 'sourceLocations' in ClassData:
for locName in ClassData['sourceLocations']:
self.implementationContent += \
"""
Locs.insert(LocationAndString(Object.{0}(),
llvm::makeIntrusiveRefCnt<LocationCall>(Prefix, "{0}")));
""".format(locName)
self.implementationContent += '\n'
if 'sourceRanges' in ClassData:
for rngName in ClassData['sourceRanges']:
self.implementationContent += \
"""
Rngs.insert(RangeAndString(Object.{0}(),
llvm::makeIntrusiveRefCnt<LocationCall>(Prefix, "{0}")));
""".format(rngName)
self.implementationContent += '\n'
if 'typeLocs' in ClassData or 'typeSourceInfos' in ClassData \
or 'nestedNameLocs' in ClassData \
or 'declNameInfos' in ClassData:
if CreateLocalRecursionGuard:
self.implementationContent += \
'std::vector<clang::TypeLoc> TypeLocRecursionGuard;\n'
self.implementationContent += '\n'
if 'typeLocs' in ClassData:
for typeLoc in ClassData['typeLocs']:
self.implementationContent += \
"""
if (Object.{0}()) {{
GetLocationsImpl(
llvm::makeIntrusiveRefCnt<LocationCall>(Prefix, "{0}"),
Object.{0}(), Locs, Rngs, TypeLocRecursionGuard);
}}
""".format(typeLoc)
self.implementationContent += '\n'
if 'typeSourceInfos' in ClassData:
for tsi in ClassData['typeSourceInfos']:
self.implementationContent += \
"""
if (Object.{0}()) {{
GetLocationsImpl(llvm::makeIntrusiveRefCnt<LocationCall>(
llvm::makeIntrusiveRefCnt<LocationCall>(Prefix, "{0}",
LocationCall::ReturnsPointer), "getTypeLoc"),
Object.{0}()->getTypeLoc(), Locs, Rngs, TypeLocRecursionGuard);
}}
""".format(tsi)
self.implementationContent += '\n'
if 'nestedNameLocs' in ClassData:
for NN in ClassData['nestedNameLocs']:
self.implementationContent += \
"""
if (Object.{0}())
GetLocationsImpl(
llvm::makeIntrusiveRefCnt<LocationCall>(Prefix, "{0}"),
Object.{0}(), Locs, Rngs, TypeLocRecursionGuard);
""".format(NN)
if 'declNameInfos' in ClassData:
for declName in ClassData['declNameInfos']:
self.implementationContent += \
"""
GetLocationsImpl(
llvm::makeIntrusiveRefCnt<LocationCall>(Prefix, "{0}"),
Object.{0}(), Locs, Rngs, TypeLocRecursionGuard);
""".format(declName)
self.implementationContent += '}\n'
def GenerateFiles(self, OutputFile):
with open(os.path.join(os.getcwd(),
OutputFile), 'w') as f:
f.write(self.implementationContent)
def GenerateBaseGetLocationsFunction(self, ASTClassNames,
ClassEntries, CladeName, InheritanceMap,
CreateLocalRecursionGuard):
MethodReturnType = 'NodeLocationAccessors'
InstanceDecoration = "*"
if CladeName in self.RefClades:
InstanceDecoration = "&"
Signature = \
'GetLocations(clang::{0} const {1}Object)'.format(
CladeName, InstanceDecoration)
ImplSignature = \
"""
GetLocationsImpl(SharedLocationCall const& Prefix,
clang::{0} const {1}Object, SourceLocationMap &Locs,
SourceRangeMap &Rngs,
std::vector<clang::TypeLoc> &TypeLocRecursionGuard)
""".format(CladeName, InstanceDecoration)
self.implementationContent += 'void {0} {{ '.format(ImplSignature)
if CladeName == "TypeLoc":
self.implementationContent += 'if (Object.isNull()) return;'
self.implementationContent += \
"""
if (llvm::find(TypeLocRecursionGuard, Object) != TypeLocRecursionGuard.end())
return;
TypeLocRecursionGuard.push_back(Object);
RecursionPopper RAII(TypeLocRecursionGuard);
"""
RecursionGuardParam = ''
if not CreateLocalRecursionGuard:
RecursionGuardParam = ', TypeLocRecursionGuard'
ArgPrefix = '*'
if CladeName in self.RefClades:
ArgPrefix = ''
self.implementationContent += \
'GetLocations{0}(Prefix, {1}Object, Locs, Rngs {2});'.format(
CladeName, ArgPrefix, RecursionGuardParam)
if CladeName == "TypeLoc":
self.implementationContent += \
'''
if (auto QTL = Object.getAs<clang::QualifiedTypeLoc>()) {
auto Dequalified = QTL.getNextTypeLoc();
return GetLocationsImpl(llvm::makeIntrusiveRefCnt<LocationCall>(Prefix, "getNextTypeLoc"),
Dequalified,
Locs,
Rngs,
TypeLocRecursionGuard);
}'''
for ASTClassName in ASTClassNames:
if ASTClassName in self.templateClasses:
continue
if ASTClassName == CladeName:
continue
if CladeName != "TypeLoc":
self.implementationContent += \
"""
if (auto Derived = llvm::dyn_cast<clang::{0}>(Object)) {{
GetLocations{0}(Prefix, *Derived, Locs, Rngs {1});
}}
""".format(ASTClassName, RecursionGuardParam)
continue
self.GenerateBaseTypeLocVisit(ASTClassName, ClassEntries,
RecursionGuardParam, InheritanceMap)
self.implementationContent += '}'
self.implementationContent += \
"""
{0} NodeIntrospection::{1} {{
NodeLocationAccessors Result;
SharedLocationCall Prefix;
std::vector<clang::TypeLoc> TypeLocRecursionGuard;
GetLocationsImpl(Prefix, Object, Result.LocationAccessors,
Result.RangeAccessors, TypeLocRecursionGuard);
""".format(MethodReturnType, Signature)
self.implementationContent += 'return Result; }'
def GenerateBaseTypeLocVisit(self, ASTClassName, ClassEntries,
RecursionGuardParam, InheritanceMap):
CallPrefix = 'Prefix'
if ASTClassName != 'TypeLoc':
CallPrefix = \
'''llvm::makeIntrusiveRefCnt<LocationCall>(Prefix,
"getAs<clang::{0}>", LocationCall::IsCast)
'''.format(ASTClassName)
if ASTClassName in ClassEntries:
self.implementationContent += \
"""
if (auto ConcreteTL = Object.getAs<clang::{0}>())
GetLocations{1}({2}, ConcreteTL, Locs, Rngs {3});
""".format(ASTClassName, ASTClassName,
CallPrefix, RecursionGuardParam)
if ASTClassName in InheritanceMap:
for baseTemplate in self.templateClasses:
if baseTemplate in InheritanceMap[ASTClassName]:
self.implementationContent += \
"""
if (auto ConcreteTL = Object.getAs<clang::{0}>())
GetLocations{1}({2}, ConcreteTL, Locs, Rngs {3});
""".format(InheritanceMap[ASTClassName], baseTemplate,
CallPrefix, RecursionGuardParam)
def GenerateDynNodeVisitor(self, CladeNames):
MethodReturnType = 'NodeLocationAccessors'
Signature = \
'GetLocations(clang::DynTypedNode const &Node)'
self.implementationContent += MethodReturnType \
+ ' NodeIntrospection::' + Signature + '{'
for CladeName in CladeNames:
if CladeName == "DeclarationNameInfo":
continue
self.implementationContent += \
"""
if (const auto *N = Node.get<{0}>())
""".format(CladeName)
ArgPrefix = ""
if CladeName in self.RefClades:
ArgPrefix = "*"
self.implementationContent += \
"""
return GetLocations({0}const_cast<{1} *>(N));""".format(ArgPrefix, CladeName)
self.implementationContent += '\nreturn {}; }'
def GenerateEpilogue(self):
self.implementationContent += '''
}
}
'''
def main():
parser = argparse.ArgumentParser()
parser.add_argument('--json-input-path',
help='Read API description from FILE', metavar='FILE')
parser.add_argument('--output-file', help='Generate output in FILEPATH',
metavar='FILEPATH')
parser.add_argument('--use-empty-implementation',
help='Generate empty implementation',
action="store", type=int)
parser.add_argument('--empty-implementation',
help='Copy empty implementation from FILEPATH',
action="store", metavar='FILEPATH')
options = parser.parse_args()
use_empty_implementation = options.use_empty_implementation
if (not use_empty_implementation
and not os.path.exists(options.json_input_path)):
use_empty_implementation = True
if not use_empty_implementation:
with open(options.json_input_path) as f:
jsonData = json.load(f)
if not 'classesInClade' in jsonData or not jsonData["classesInClade"]:
use_empty_implementation = True
if use_empty_implementation:
if not os.path.exists(options.output_file) or \
not filecmp.cmp(options.empty_implementation, options.output_file):
shutil.copyfile(options.empty_implementation, options.output_file)
sys.exit(0)
templateClasses = []
for (ClassName, ClassAccessors) in jsonData['classEntries'].items():
if "templateParms" in ClassAccessors:
templateClasses.append(ClassName)
g = Generator(templateClasses)
g.GeneratePrologue()
for (CladeName, ClassNameData) in jsonData['classesInClade'].items():
g.GenerateBaseGetLocationsDeclaration(CladeName)
def getCladeName(ClassName):
for (CladeName, ClassNameData) in jsonData['classesInClade'].items():
if ClassName in ClassNameData:
return CladeName
for (ClassName, ClassAccessors) in jsonData['classEntries'].items():
cladeName = getCladeName(ClassName)
g.GenerateSrcLocMethod(
ClassName, ClassAccessors,
cladeName not in Generator.RefClades)
for (CladeName, ClassNameData) in jsonData['classesInClade'].items():
g.GenerateBaseGetLocationsFunction(
ClassNameData,
jsonData['classEntries'],
CladeName,
jsonData["classInheritance"],
CladeName not in Generator.RefClades)
g.GenerateDynNodeVisitor(jsonData['classesInClade'].keys())
g.GenerateEpilogue()
g.GenerateFiles(options.output_file)
if __name__ == '__main__':
main()
|
