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#include <inttypes.h>
#include "rusttypes.h"
using namespace std;
using namespace BinaryNinja;
RustTypePrinter::RustTypePrinter(): TypePrinter("RustTypePrinter")
{
}
void RustTypePrinter::AppendCallingConventionTokens(Type* type, Platform* platform, uint8_t baseConfidence,
vector<InstructionTextToken>& tokens)
{
if (type->GetCallingConvention().GetValue() && platform
&& type->GetCallingConvention().GetValue() != platform->GetDefaultCallingConvention())
{
uint8_t ccConfidence = type->GetCallingConvention().GetCombinedConfidence(baseConfidence);
tokens.emplace_back(baseConfidence, KeywordToken, "extern");
tokens.emplace_back(ccConfidence, TextToken, " ");
tokens.emplace_back(ccConfidence, BraceToken, "\"");
if (type->GetCallingConvention().GetValue() == platform->GetCdeclCallingConvention())
{
tokens.emplace_back(StringToken, StringDisplayTokenContext, "C", 0,
Utf8String, 0, BN_INVALID_OPERAND, ccConfidence);
}
else
{
tokens.emplace_back(StringToken, StringDisplayTokenContext, type->GetCallingConvention()->GetName(), 0,
Utf8String, 0, BN_INVALID_OPERAND, ccConfidence);
}
tokens.emplace_back(ccConfidence, BraceToken, "\"");
tokens.emplace_back(ccConfidence, TextToken, " ");
}
}
void RustTypePrinter::GetStructureMemberTokens(Platform* platform, Type* type, uint8_t baseConfidence,
BNTokenEscapingType escaping, vector<InstructionTextToken>& out)
{
uint64_t offset = 0;
vector<StructureMember> members = type->GetStructure()->GetMembers();
for (size_t i = 0; i < members.size(); i++)
{
if (members[i].type->GetClass() == FunctionTypeClass)
continue;
if (i != 0)
out.emplace_back(baseConfidence, TextToken, ", ");
else
out.emplace_back(baseConfidence, TextToken, " ");
if ((!type->GetStructure()->IsPacked()) && (members[i].type->GetAlignment() != 0) &&
((offset % members[i].type->GetAlignment()) != 0))
offset += members[i].type->GetAlignment() - (offset % members[i].type->GetAlignment());
if (members[i].offset < offset)
{
out.emplace_back(baseConfidence, KeywordToken, "__offset");
out.emplace_back(baseConfidence, BraceToken, "(");
out.emplace_back(IntegerToken, DisassemblyTextRenderer::GetDisplayStringForInteger(
nullptr, UnsignedHexadecimalDisplayType, members[i].offset, 8),
members[i].offset, 0, BN_INVALID_OPERAND, baseConfidence);
out.emplace_back(baseConfidence, BraceToken, ")");
offset = members[i].offset;
}
else if (members[i].offset > offset)
{
char offsetStr[32];
snprintf(offsetStr, sizeof(offsetStr), "_%" PRIx64, offset);
out.emplace_back(baseConfidence, KeywordToken, "__padding");
out.emplace_back(baseConfidence, TextToken, " ");
out.emplace_back(baseConfidence, TextToken, offsetStr);
out.emplace_back(baseConfidence, TextToken, ": ");
out.emplace_back(baseConfidence, BraceToken, "[");
out.emplace_back(baseConfidence, KeywordToken, "u8");
out.emplace_back(baseConfidence, TextToken, "; ");
out.emplace_back(IntegerToken, DisassemblyTextRenderer::GetDisplayStringForInteger(
nullptr, UnsignedHexadecimalDisplayType, members[i].offset - offset, 8),
members[i].offset - offset, 0, BN_INVALID_OPERAND, baseConfidence);
out.emplace_back(baseConfidence, BraceToken, "]");
offset = members[i].offset;
}
vector<InstructionTextToken> after =
GetTypeTokensAfterName(members[i].type.GetValue(), platform, BN_FULL_CONFIDENCE, nullptr, escaping);
out.emplace_back(baseConfidence, FieldNameToken,
NameList::EscapeTypeName(members[i].name, escaping));
out.insert(out.end(), after.begin(), after.end());
if (!type->GetStructure()->IsUnion())
offset = members[i].offset + members[i].type->GetWidth();
}
out.emplace_back(baseConfidence, TextToken, " ");
}
vector<InstructionTextToken> RustTypePrinter::GetTypeTokensBeforeName(
Ref<Type> type, Ref<Platform> platform, uint8_t baseConfidence, Ref<Type> parentType,
BNTokenEscapingType escaping)
{
vector<InstructionTextToken> tokens;
if ((!parentType || !parentType->IsPointer()) && type->GetClass() == FunctionTypeClass)
{
AppendCallingConventionTokens(type, platform, baseConfidence, tokens);
tokens.emplace_back(baseConfidence, KeywordToken, "fn");
}
return tokens;
}
vector<InstructionTextToken> RustTypePrinter::GetTypeTokensAfterName(
Ref<Type> type, Ref<Platform> platform, uint8_t baseConfidence, Ref<Type> parentType,
BNTokenEscapingType escaping)
{
return GetTypeTokensAfterNameInternal(type, platform, baseConfidence, parentType, escaping);
}
vector<InstructionTextToken> RustTypePrinter::GetTypeTokensAfterNameInternal(
Ref<Type> type, Ref<Platform> platform, uint8_t baseConfidence, Ref<Type> parentType,
BNTokenEscapingType escaping, bool functionHeader)
{
vector<InstructionTextToken> tokens;
if (!parentType && type->GetClass() != FunctionTypeClass)
tokens.emplace_back(TextToken, ": ");
switch (type->GetClass())
{
case FunctionTypeClass:
{
if (parentType && parentType->IsPointer())
{
AppendCallingConventionTokens(type, platform, baseConfidence, tokens);
tokens.emplace_back(baseConfidence, KeywordToken, "fn");
}
tokens.emplace_back(baseConfidence, BraceToken, "(");
auto params = type->GetParameters();
for (size_t i = 0; i < params.size(); i++)
{
if (i != 0)
tokens.emplace_back(baseConfidence, TextToken, ", ");
vector<InstructionTextToken> paramTokens = GetTypeTokensAfterName(params[i].type.GetValue(), platform,
params[i].type.GetCombinedConfidence(baseConfidence), type, escaping);
auto var = params[i].location.GetVariableForParameter(i);
if (functionHeader && var.has_value())
{
for (auto& token : paramTokens)
{
token.context = LocalVariableTokenContext;
token.address = var->ToIdentifier();
}
}
InstructionTextToken nameToken;
if (params[i].name.length() == 0)
{
nameToken = InstructionTextToken(TextToken, "_");
}
else
{
nameToken = InstructionTextToken(ArgumentNameToken, NameList::EscapeTypeName(params[i].name, escaping), i);
if (functionHeader && var.has_value())
{
nameToken.context = LocalVariableTokenContext;
nameToken.address = var->ToIdentifier();
}
}
tokens.push_back(nameToken);
tokens.emplace_back(TextToken, ": ");
if (params[i].locationSource == PassByReferenceLocationSource || params[i].location.indirect)
tokens.emplace_back(baseConfidence, OperationToken, "&");
tokens.insert(tokens.end(), paramTokens.begin(), paramTokens.end());
if (params[i].locationSource == CustomLocationSource && platform && var.has_value())
{
switch (var->type)
{
case RegisterVariableSourceType:
{
string registerName = platform->GetArchitecture()->GetRegisterName((uint32_t)var->storage);
tokens.emplace_back(TextToken, " @ ");
tokens.emplace_back(RegisterToken, NameList::EscapeTypeName(registerName, escaping), var->storage);
break;
}
case FlagVariableSourceType:
{
string flagName = platform->GetArchitecture()->GetFlagName((uint32_t)var->storage);
tokens.emplace_back(TextToken, " @ ");
tokens.emplace_back(AnnotationToken, NameList::EscapeTypeName(flagName, escaping), var->storage);
break;
}
case StackVariableSourceType:
{
tokens.emplace_back(TextToken, " @ ");
char storageStr[32];
snprintf(storageStr, sizeof(storageStr), "%" PRIi64, var->storage);
tokens.emplace_back(IntegerToken, storageStr, var->storage);
break;
}
default:
{
string locationStr = params[i].location.ToString(platform->GetArchitecture());
tokens.emplace_back(TextToken, " @ ");
tokens.emplace_back(ValueLocationToken, locationStr);
break;
}
}
}
}
if (type->HasVariableArguments())
{
if (params.size() != 0)
tokens.emplace_back(TextToken, ", ");
tokens.emplace_back(type->HasVariableArguments().GetCombinedConfidence(baseConfidence), TextToken, "...");
}
tokens.emplace_back(baseConfidence, BraceToken, ")");
if (!type->CanReturn())
{
// No return functions are part of the Rust language, marked by returning the "never" type.
tokens.emplace_back(baseConfidence, TextToken, " -> ");
tokens.emplace_back(type->CanReturn().GetCombinedConfidence(baseConfidence), TextToken, "!");
}
else if (type->GetChildType().GetValue() && type->GetChildType()->GetClass() != VoidTypeClass)
{
tokens.emplace_back(baseConfidence, TextToken, " -> ");
vector<InstructionTextToken> retn = GetTypeTokensAfterName(type->GetChildType().GetValue(), platform,
type->GetChildType().GetCombinedConfidence(baseConfidence), type, escaping);
if (functionHeader)
{
for (auto& i : retn)
i.context = FunctionReturnTokenContext;
}
tokens.insert(tokens.end(), retn.begin(), retn.end());
if (!type->GetReturnValue().defaultLocation)
{
auto location = type->GetReturnValue().location;
string locationStr = location->ToString(platform->GetArchitecture());
tokens.emplace_back(TextToken, " @ ");
tokens.emplace_back(location.GetCombinedConfidence(baseConfidence), ValueLocationToken, locationStr);
}
}
break;
}
case IntegerTypeClass:
tokens.emplace_back(baseConfidence, TypeNameToken,
(type->IsSigned() ? "i" : "u") + to_string(type->GetWidth() * 8));
break;
case FloatTypeClass:
tokens.emplace_back(baseConfidence, TypeNameToken, "f" + to_string(type->GetWidth() * 8));
break;
case WideCharTypeClass:
if (type->GetWidth() == 4)
tokens.emplace_back(baseConfidence, TypeNameToken, "char");
else
tokens.emplace_back(baseConfidence, TypeNameToken, "char" + to_string(type->GetWidth() * 8));
break;
case BoolTypeClass:
tokens.emplace_back(baseConfidence, TypeNameToken, "bool");
break;
case VoidTypeClass:
if (parentType && parentType->IsPointer())
{
tokens.emplace_back(baseConfidence, TypeNameToken, "c_void");
}
else
{
tokens.emplace_back(baseConfidence, BraceToken, "(");
tokens.emplace_back(baseConfidence, BraceToken, ")");
}
break;
case StructureTypeClass:
if (type->GetRegisteredName())
{
tokens.emplace_back(baseConfidence, TypeNameToken, type->GetRegisteredName()->GetName().GetString(escaping));
}
else
{
tokens.emplace_back(baseConfidence, KeywordToken, "struct");
tokens.emplace_back(baseConfidence, TextToken, " ");
tokens.emplace_back(baseConfidence, BraceToken, "{");
GetStructureMemberTokens(platform, type, baseConfidence, escaping, tokens);
tokens.emplace_back(baseConfidence, BraceToken, "}");
}
break;
case EnumerationTypeClass:
if (type->GetRegisteredName())
tokens.emplace_back(baseConfidence, TypeNameToken, type->GetRegisteredName()->GetName().GetString(escaping));
else
tokens.emplace_back(baseConfidence, TypeNameToken, "i" + to_string(type->GetWidth() * 8));
break;
case VarArgsTypeClass:
tokens.emplace_back(baseConfidence, TextToken, "...");
break;
case PointerTypeClass:
{
if (type->GetChildType()->GetClass() == FunctionTypeClass)
{
vector<InstructionTextToken> inner =
GetTypeTokensAfterName(type->GetChildType().GetValue(), platform, baseConfidence, type, escaping);
tokens.insert(tokens.end(), inner.begin(), inner.end());
return tokens;
}
tokens.emplace_back(baseConfidence, TextToken, "*");
if (type->GetChildType()->IsConst())
tokens.emplace_back(baseConfidence, KeywordToken, "const");
else
tokens.emplace_back(baseConfidence, KeywordToken, "mut");
tokens.emplace_back(baseConfidence, TextToken, " ");
vector<InstructionTextToken> inner = GetTypeTokensAfterName(type->GetChildType().GetValue(), platform,
type->GetChildType().GetCombinedConfidence(baseConfidence), type, escaping);
tokens.insert(tokens.end(), inner.begin(), inner.end());
break;
}
case ArrayTypeClass:
{
tokens.emplace_back(baseConfidence, BraceToken, "[");
vector<InstructionTextToken> inner = GetTypeTokensAfterName(type->GetChildType().GetValue(), platform,
type->GetChildType().GetCombinedConfidence(baseConfidence), type, escaping);
tokens.insert(tokens.end(), inner.begin(), inner.end());
tokens.emplace_back(baseConfidence, TextToken, "; ");
tokens.emplace_back(ArrayIndexToken, DisassemblyTextRenderer::GetDisplayStringForInteger(
nullptr, type->GetIntegerTypeDisplayType(), type->GetElementCount(), 8).c_str(), type->GetElementCount());
tokens.emplace_back(baseConfidence, BraceToken, "]");
}
case ValueTypeClass:
tokens.emplace_back(baseConfidence, TextToken, NameList::EscapeTypeName(type->GetAlternateName(), escaping));
break;
case NamedTypeReferenceClass:
tokens.emplace_back(baseConfidence, TypeNameToken, type->GetNamedTypeReference()->GetName().GetString(escaping));
break;
default:
tokens.emplace_back(AnnotationToken, "/* invalid type */");
break;
}
return tokens;
}
vector<TypeDefinitionLine> RustTypePrinter::GetTypeLines(
Ref<Type> type, const TypeContainer& types, const QualifiedName& name, int paddingCols,
bool collapsed, BNTokenEscapingType escaping)
{
// TODO: Implement this to get type rendering in the Types view
return {};
}
|
