demangle: Update to llvm/llvm-project@ecbc812e0c
This commit is contained in:
lat9nq
parent
c1e57ad358
commit
1ab3bd5a5e
169
externals/demangle/ItaniumDemangle.cpp
vendored
169
externals/demangle/ItaniumDemangle.cpp
vendored
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@ -20,9 +20,7 @@
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#include <cstdlib>
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#include <cstring>
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#include <functional>
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#include <numeric>
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#include <utility>
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#include <vector>
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using namespace llvm;
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using namespace llvm::itanium_demangle;
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@ -81,8 +79,8 @@ struct DumpVisitor {
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}
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void printStr(const char *S) { fprintf(stderr, "%s", S); }
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void print(StringView SV) {
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fprintf(stderr, "\"%.*s\"", (int)SV.size(), SV.begin());
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void print(std::string_view SV) {
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fprintf(stderr, "\"%.*s\"", (int)SV.size(), SV.data());
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}
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void print(const Node *N) {
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if (N)
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@ -90,14 +88,6 @@ struct DumpVisitor {
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else
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printStr("<null>");
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}
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void print(NodeOrString NS) {
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if (NS.isNode())
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print(NS.asNode());
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else if (NS.isString())
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print(NS.asString());
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else
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printStr("NodeOrString()");
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}
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void print(NodeArray A) {
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++Depth;
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printStr("{");
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@ -116,13 +106,11 @@ struct DumpVisitor {
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// Overload used when T is exactly 'bool', not merely convertible to 'bool'.
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void print(bool B) { printStr(B ? "true" : "false"); }
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template <class T>
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typename std::enable_if<std::is_unsigned<T>::value>::type print(T N) {
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template <class T> std::enable_if_t<std::is_unsigned<T>::value> print(T N) {
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fprintf(stderr, "%llu", (unsigned long long)N);
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}
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template <class T>
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typename std::enable_if<std::is_signed<T>::value>::type print(T N) {
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template <class T> std::enable_if_t<std::is_signed<T>::value> print(T N) {
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fprintf(stderr, "%lld", (long long)N);
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}
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@ -185,6 +173,50 @@ struct DumpVisitor {
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return printStr("TemplateParamKind::Template");
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}
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}
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void print(Node::Prec P) {
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switch (P) {
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case Node::Prec::Primary:
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return printStr("Node::Prec::Primary");
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case Node::Prec::Postfix:
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return printStr("Node::Prec::Postfix");
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case Node::Prec::Unary:
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return printStr("Node::Prec::Unary");
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case Node::Prec::Cast:
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return printStr("Node::Prec::Cast");
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case Node::Prec::PtrMem:
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return printStr("Node::Prec::PtrMem");
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case Node::Prec::Multiplicative:
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return printStr("Node::Prec::Multiplicative");
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case Node::Prec::Additive:
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return printStr("Node::Prec::Additive");
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case Node::Prec::Shift:
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return printStr("Node::Prec::Shift");
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case Node::Prec::Spaceship:
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return printStr("Node::Prec::Spaceship");
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case Node::Prec::Relational:
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return printStr("Node::Prec::Relational");
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case Node::Prec::Equality:
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return printStr("Node::Prec::Equality");
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case Node::Prec::And:
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return printStr("Node::Prec::And");
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case Node::Prec::Xor:
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return printStr("Node::Prec::Xor");
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case Node::Prec::Ior:
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return printStr("Node::Prec::Ior");
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case Node::Prec::AndIf:
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return printStr("Node::Prec::AndIf");
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case Node::Prec::OrIf:
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return printStr("Node::Prec::OrIf");
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case Node::Prec::Conditional:
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return printStr("Node::Prec::Conditional");
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case Node::Prec::Assign:
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return printStr("Node::Prec::Assign");
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case Node::Prec::Comma:
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return printStr("Node::Prec::Comma");
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case Node::Prec::Default:
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return printStr("Node::Prec::Default");
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}
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}
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void newLine() {
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printStr("\n");
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@ -334,36 +366,21 @@ public:
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using Demangler = itanium_demangle::ManglingParser<DefaultAllocator>;
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char *llvm::itaniumDemangle(const char *MangledName, char *Buf,
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size_t *N, int *Status) {
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if (MangledName == nullptr || (Buf != nullptr && N == nullptr)) {
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if (Status)
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*Status = demangle_invalid_args;
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char *llvm::itaniumDemangle(std::string_view MangledName) {
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if (MangledName.empty())
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return nullptr;
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}
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int InternalStatus = demangle_success;
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Demangler Parser(MangledName, MangledName + std::strlen(MangledName));
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OutputStream S;
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Demangler Parser(MangledName.data(),
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MangledName.data() + MangledName.length());
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Node *AST = Parser.parse();
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if (!AST)
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return nullptr;
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if (AST == nullptr)
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InternalStatus = demangle_invalid_mangled_name;
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else if (!initializeOutputStream(Buf, N, S, 1024))
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InternalStatus = demangle_memory_alloc_failure;
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else {
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OutputBuffer OB;
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assert(Parser.ForwardTemplateRefs.empty());
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AST->print(S);
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S += '\0';
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if (N != nullptr)
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*N = S.getCurrentPosition();
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Buf = S.getBuffer();
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}
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if (Status)
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*Status = InternalStatus;
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return InternalStatus == demangle_success ? Buf : nullptr;
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AST->print(OB);
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OB += '\0';
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return OB.getBuffer();
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}
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ItaniumPartialDemangler::ItaniumPartialDemangler()
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@ -396,14 +413,12 @@ bool ItaniumPartialDemangler::partialDemangle(const char *MangledName) {
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}
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static char *printNode(const Node *RootNode, char *Buf, size_t *N) {
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OutputStream S;
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if (!initializeOutputStream(Buf, N, S, 128))
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return nullptr;
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RootNode->print(S);
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S += '\0';
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OutputBuffer OB(Buf, N);
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RootNode->print(OB);
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OB += '\0';
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if (N != nullptr)
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*N = S.getCurrentPosition();
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return S.getBuffer();
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*N = OB.getCurrentPosition();
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return OB.getBuffer();
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}
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char *ItaniumPartialDemangler::getFunctionBaseName(char *Buf, size_t *N) const {
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@ -417,8 +432,8 @@ char *ItaniumPartialDemangler::getFunctionBaseName(char *Buf, size_t *N) const {
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case Node::KAbiTagAttr:
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Name = static_cast<const AbiTagAttr *>(Name)->Base;
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continue;
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case Node::KStdQualifiedName:
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Name = static_cast<const StdQualifiedName *>(Name)->Child;
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case Node::KModuleEntity:
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Name = static_cast<const ModuleEntity *>(Name)->Name;
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continue;
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case Node::KNestedName:
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Name = static_cast<const NestedName *>(Name)->Name;
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@ -441,9 +456,7 @@ char *ItaniumPartialDemangler::getFunctionDeclContextName(char *Buf,
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return nullptr;
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const Node *Name = static_cast<const FunctionEncoding *>(RootNode)->getName();
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OutputStream S;
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if (!initializeOutputStream(Buf, N, S, 128))
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return nullptr;
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OutputBuffer OB(Buf, N);
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KeepGoingLocalFunction:
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while (true) {
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@ -458,27 +471,27 @@ char *ItaniumPartialDemangler::getFunctionDeclContextName(char *Buf,
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break;
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}
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if (Name->getKind() == Node::KModuleEntity)
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Name = static_cast<const ModuleEntity *>(Name)->Name;
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switch (Name->getKind()) {
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case Node::KStdQualifiedName:
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S += "std";
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break;
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case Node::KNestedName:
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static_cast<const NestedName *>(Name)->Qual->print(S);
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static_cast<const NestedName *>(Name)->Qual->print(OB);
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break;
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case Node::KLocalName: {
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auto *LN = static_cast<const LocalName *>(Name);
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LN->Encoding->print(S);
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S += "::";
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LN->Encoding->print(OB);
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OB += "::";
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Name = LN->Entity;
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goto KeepGoingLocalFunction;
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}
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default:
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break;
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}
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S += '\0';
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OB += '\0';
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if (N != nullptr)
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*N = S.getCurrentPosition();
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return S.getBuffer();
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*N = OB.getCurrentPosition();
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return OB.getBuffer();
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}
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char *ItaniumPartialDemangler::getFunctionName(char *Buf, size_t *N) const {
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@ -494,17 +507,15 @@ char *ItaniumPartialDemangler::getFunctionParameters(char *Buf,
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return nullptr;
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NodeArray Params = static_cast<FunctionEncoding *>(RootNode)->getParams();
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OutputStream S;
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if (!initializeOutputStream(Buf, N, S, 128))
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return nullptr;
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OutputBuffer OB(Buf, N);
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S += '(';
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Params.printWithComma(S);
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S += ')';
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S += '\0';
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OB += '(';
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Params.printWithComma(OB);
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OB += ')';
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OB += '\0';
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if (N != nullptr)
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*N = S.getCurrentPosition();
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return S.getBuffer();
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*N = OB.getCurrentPosition();
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return OB.getBuffer();
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}
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char *ItaniumPartialDemangler::getFunctionReturnType(
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@ -512,18 +523,16 @@ char *ItaniumPartialDemangler::getFunctionReturnType(
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if (!isFunction())
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return nullptr;
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OutputStream S;
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if (!initializeOutputStream(Buf, N, S, 128))
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return nullptr;
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OutputBuffer OB(Buf, N);
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if (const Node *Ret =
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static_cast<const FunctionEncoding *>(RootNode)->getReturnType())
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Ret->print(S);
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Ret->print(OB);
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S += '\0';
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OB += '\0';
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if (N != nullptr)
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*N = S.getCurrentPosition();
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return S.getBuffer();
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*N = OB.getCurrentPosition();
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return OB.getBuffer();
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}
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char *ItaniumPartialDemangler::finishDemangle(char *Buf, size_t *N) const {
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@ -563,8 +572,8 @@ bool ItaniumPartialDemangler::isCtorOrDtor() const {
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case Node::KNestedName:
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N = static_cast<const NestedName *>(N)->Name;
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break;
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case Node::KStdQualifiedName:
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N = static_cast<const StdQualifiedName *>(N)->Child;
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case Node::KModuleEntity:
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N = static_cast<const ModuleEntity *>(N)->Name;
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break;
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}
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}
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37
externals/demangle/llvm/Demangle/Demangle.h
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37
externals/demangle/llvm/Demangle/Demangle.h
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@ -12,6 +12,7 @@
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#include <cstddef>
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#include <string>
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#include <string_view>
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namespace llvm {
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/// This is a llvm local version of __cxa_demangle. Other than the name and
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@ -29,9 +30,10 @@ enum : int {
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demangle_success = 0,
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};
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char *itaniumDemangle(const char *mangled_name, char *buf, size_t *n,
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int *status);
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/// Returns a non-NULL pointer to a NUL-terminated C style string
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/// that should be explicitly freed, if successful. Otherwise, may return
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/// nullptr if mangled_name is not a valid mangling or is nullptr.
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char *itaniumDemangle(std::string_view mangled_name);
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enum MSDemangleFlags {
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MSDF_None = 0,
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@ -40,10 +42,34 @@ enum MSDemangleFlags {
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MSDF_NoCallingConvention = 1 << 2,
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MSDF_NoReturnType = 1 << 3,
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MSDF_NoMemberType = 1 << 4,
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MSDF_NoVariableType = 1 << 5,
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};
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char *microsoftDemangle(const char *mangled_name, char *buf, size_t *n,
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/// Demangles the Microsoft symbol pointed at by mangled_name and returns it.
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/// Returns a pointer to the start of a null-terminated demangled string on
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/// success, or nullptr on error.
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/// If n_read is non-null and demangling was successful, it receives how many
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/// bytes of the input string were consumed.
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/// status receives one of the demangle_ enum entries above if it's not nullptr.
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/// Flags controls various details of the demangled representation.
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char *microsoftDemangle(std::string_view mangled_name, size_t *n_read,
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int *status, MSDemangleFlags Flags = MSDF_None);
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// Demangles a Rust v0 mangled symbol.
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char *rustDemangle(std::string_view MangledName);
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// Demangles a D mangled symbol.
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char *dlangDemangle(std::string_view MangledName);
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/// Attempt to demangle a string using different demangling schemes.
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/// The function uses heuristics to determine which demangling scheme to use.
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/// \param MangledName - reference to string to demangle.
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/// \returns - the demangled string, or a copy of the input string if no
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/// demangling occurred.
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std::string demangle(std::string_view MangledName);
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bool nonMicrosoftDemangle(std::string_view MangledName, std::string &Result);
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/// "Partial" demangler. This supports demangling a string into an AST
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/// (typically an intermediate stage in itaniumDemangle) and querying certain
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/// properties or partially printing the demangled name.
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@ -59,7 +85,7 @@ struct ItaniumPartialDemangler {
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bool partialDemangle(const char *MangledName);
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/// Just print the entire mangled name into Buf. Buf and N behave like the
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/// second and third parameters to itaniumDemangle.
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/// second and third parameters to __cxa_demangle.
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char *finishDemangle(char *Buf, size_t *N) const;
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/// Get the base name of a function. This doesn't include trailing template
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@ -95,6 +121,7 @@ struct ItaniumPartialDemangler {
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bool isSpecialName() const;
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~ItaniumPartialDemangler();
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private:
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void *RootNode;
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void *Context;
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@ -13,8 +13,8 @@
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_DEMANGLE_COMPILER_H
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#define LLVM_DEMANGLE_COMPILER_H
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#ifndef LLVM_DEMANGLE_DEMANGLECONFIG_H
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#define LLVM_DEMANGLE_DEMANGLECONFIG_H
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#ifndef __has_feature
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#define __has_feature(x) 0
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3786
externals/demangle/llvm/Demangle/ItaniumDemangle.h
vendored
3786
externals/demangle/llvm/Demangle/ItaniumDemangle.h
vendored
File diff suppressed because it is too large
Load diff
96
externals/demangle/llvm/Demangle/ItaniumNodes.def
vendored
Normal file
96
externals/demangle/llvm/Demangle/ItaniumNodes.def
vendored
Normal file
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@ -0,0 +1,96 @@
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//===--- ItaniumNodes.def ------------*- mode:c++;eval:(read-only-mode) -*-===//
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// Do not edit! See README.txt.
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-FileCopyrightText: Part of the LLVM Project
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// Define the demangler's node names
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#ifndef NODE
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#error Define NODE to handle nodes
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#endif
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NODE(NodeArrayNode)
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NODE(DotSuffix)
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NODE(VendorExtQualType)
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NODE(QualType)
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NODE(ConversionOperatorType)
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NODE(PostfixQualifiedType)
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NODE(ElaboratedTypeSpefType)
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NODE(NameType)
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NODE(AbiTagAttr)
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NODE(EnableIfAttr)
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NODE(ObjCProtoName)
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NODE(PointerType)
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NODE(ReferenceType)
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NODE(PointerToMemberType)
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NODE(ArrayType)
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NODE(FunctionType)
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NODE(NoexceptSpec)
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NODE(DynamicExceptionSpec)
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NODE(FunctionEncoding)
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NODE(LiteralOperator)
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NODE(SpecialName)
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NODE(CtorVtableSpecialName)
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NODE(QualifiedName)
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NODE(NestedName)
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NODE(LocalName)
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NODE(ModuleName)
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NODE(ModuleEntity)
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NODE(VectorType)
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NODE(PixelVectorType)
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NODE(BinaryFPType)
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NODE(BitIntType)
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NODE(SyntheticTemplateParamName)
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NODE(TypeTemplateParamDecl)
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NODE(NonTypeTemplateParamDecl)
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NODE(TemplateTemplateParamDecl)
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NODE(TemplateParamPackDecl)
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NODE(ParameterPack)
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NODE(TemplateArgumentPack)
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NODE(ParameterPackExpansion)
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NODE(TemplateArgs)
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NODE(ForwardTemplateReference)
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NODE(NameWithTemplateArgs)
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NODE(GlobalQualifiedName)
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NODE(ExpandedSpecialSubstitution)
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NODE(SpecialSubstitution)
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NODE(CtorDtorName)
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NODE(DtorName)
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NODE(UnnamedTypeName)
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NODE(ClosureTypeName)
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NODE(StructuredBindingName)
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NODE(BinaryExpr)
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NODE(ArraySubscriptExpr)
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NODE(PostfixExpr)
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NODE(ConditionalExpr)
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NODE(MemberExpr)
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NODE(SubobjectExpr)
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NODE(EnclosingExpr)
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NODE(CastExpr)
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NODE(SizeofParamPackExpr)
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NODE(CallExpr)
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NODE(NewExpr)
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NODE(DeleteExpr)
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NODE(PrefixExpr)
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NODE(FunctionParam)
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||||
NODE(ConversionExpr)
|
||||
NODE(PointerToMemberConversionExpr)
|
||||
NODE(InitListExpr)
|
||||
NODE(FoldExpr)
|
||||
NODE(ThrowExpr)
|
||||
NODE(BoolExpr)
|
||||
NODE(StringLiteral)
|
||||
NODE(LambdaExpr)
|
||||
NODE(EnumLiteral)
|
||||
NODE(IntegerLiteral)
|
||||
NODE(FloatLiteral)
|
||||
NODE(DoubleLiteral)
|
||||
NODE(LongDoubleLiteral)
|
||||
NODE(BracedExpr)
|
||||
NODE(BracedRangeExpr)
|
||||
|
||||
#undef NODE
|
||||
32
externals/demangle/llvm/Demangle/StringView.h
vendored
32
externals/demangle/llvm/Demangle/StringView.h
vendored
|
|
@ -1,5 +1,5 @@
|
|||
//===--- StringView.h -------------------------------------------*- C++ -*-===//
|
||||
//
|
||||
//===--- StringView.h ----------------*- mode:c++;eval:(read-only-mode) -*-===//
|
||||
// Do not edit! See README.txt.
|
||||
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
||||
// See https://llvm.org/LICENSE.txt for license information.
|
||||
// SPDX-FileCopyrightText: Part of the LLVM Project
|
||||
|
|
@ -8,6 +8,9 @@
|
|||
//===----------------------------------------------------------------------===//
|
||||
//
|
||||
// FIXME: Use std::string_view instead when we support C++17.
|
||||
// There are two copies of this file in the source tree. The one under
|
||||
// libcxxabi is the original and the one under llvm is the copy. Use
|
||||
// cp-to-llvm.sh to update the copy. See README.txt for more details.
|
||||
//
|
||||
//===----------------------------------------------------------------------===//
|
||||
|
||||
|
|
@ -15,7 +18,6 @@
|
|||
#define DEMANGLE_STRINGVIEW_H
|
||||
|
||||
#include "DemangleConfig.h"
|
||||
#include <algorithm>
|
||||
#include <cassert>
|
||||
#include <cstring>
|
||||
|
||||
|
|
@ -37,29 +39,23 @@ public:
|
|||
StringView(const char *Str) : First(Str), Last(Str + std::strlen(Str)) {}
|
||||
StringView() : First(nullptr), Last(nullptr) {}
|
||||
|
||||
StringView substr(size_t From) const {
|
||||
return StringView(begin() + From, size() - From);
|
||||
StringView substr(size_t Pos, size_t Len = npos) const {
|
||||
assert(Pos <= size());
|
||||
if (Len > size() - Pos)
|
||||
Len = size() - Pos;
|
||||
return StringView(begin() + Pos, Len);
|
||||
}
|
||||
|
||||
size_t find(char C, size_t From = 0) const {
|
||||
size_t FindBegin = std::min(From, size());
|
||||
// Avoid calling memchr with nullptr.
|
||||
if (FindBegin < size()) {
|
||||
if (From < size()) {
|
||||
// Just forward to memchr, which is faster than a hand-rolled loop.
|
||||
if (const void *P = ::memchr(First + FindBegin, C, size() - FindBegin))
|
||||
if (const void *P = ::memchr(First + From, C, size() - From))
|
||||
return size_t(static_cast<const char *>(P) - First);
|
||||
}
|
||||
return npos;
|
||||
}
|
||||
|
||||
StringView substr(size_t From, size_t To) const {
|
||||
if (To >= size())
|
||||
To = size() - 1;
|
||||
if (From >= size())
|
||||
From = size() - 1;
|
||||
return StringView(First + From, First + To);
|
||||
}
|
||||
|
||||
StringView dropFront(size_t N = 1) const {
|
||||
if (N >= size())
|
||||
N = size();
|
||||
|
|
@ -106,7 +102,7 @@ public:
|
|||
bool startsWith(StringView Str) const {
|
||||
if (Str.size() > size())
|
||||
return false;
|
||||
return std::equal(Str.begin(), Str.end(), begin());
|
||||
return std::strncmp(Str.begin(), begin(), Str.size()) == 0;
|
||||
}
|
||||
|
||||
const char &operator[](size_t Idx) const { return *(begin() + Idx); }
|
||||
|
|
@ -119,7 +115,7 @@ public:
|
|||
|
||||
inline bool operator==(const StringView &LHS, const StringView &RHS) {
|
||||
return LHS.size() == RHS.size() &&
|
||||
std::equal(LHS.begin(), LHS.end(), RHS.begin());
|
||||
std::strncmp(LHS.begin(), RHS.begin(), LHS.size()) == 0;
|
||||
}
|
||||
|
||||
DEMANGLE_NAMESPACE_END
|
||||
|
|
|
|||
39
externals/demangle/llvm/Demangle/StringViewExtras.h
vendored
Normal file
39
externals/demangle/llvm/Demangle/StringViewExtras.h
vendored
Normal file
|
|
@ -0,0 +1,39 @@
|
|||
//===--- StringViewExtras.h ----------*- mode:c++;eval:(read-only-mode) -*-===//
|
||||
// Do not edit! See README.txt.
|
||||
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
||||
// See https://llvm.org/LICENSE.txt for license information.
|
||||
// SPDX-FileCopyrightText: Part of the LLVM Project
|
||||
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
||||
//
|
||||
//===----------------------------------------------------------------------===//
|
||||
//
|
||||
// There are two copies of this file in the source tree. The one under
|
||||
// libcxxabi is the original and the one under llvm is the copy. Use
|
||||
// cp-to-llvm.sh to update the copy. See README.txt for more details.
|
||||
//
|
||||
//===----------------------------------------------------------------------===//
|
||||
|
||||
#ifndef DEMANGLE_STRINGVIEW_H
|
||||
#define DEMANGLE_STRINGVIEW_H
|
||||
|
||||
#include "DemangleConfig.h"
|
||||
|
||||
#include <string_view>
|
||||
|
||||
DEMANGLE_NAMESPACE_BEGIN
|
||||
|
||||
inline bool starts_with(std::string_view self, char C) noexcept {
|
||||
return !self.empty() && *self.begin() == C;
|
||||
}
|
||||
|
||||
inline bool starts_with(std::string_view haystack,
|
||||
std::string_view needle) noexcept {
|
||||
if (needle.size() > haystack.size())
|
||||
return false;
|
||||
haystack.remove_suffix(haystack.size() - needle.size());
|
||||
return haystack == needle;
|
||||
}
|
||||
|
||||
DEMANGLE_NAMESPACE_END
|
||||
|
||||
#endif
|
||||
204
externals/demangle/llvm/Demangle/Utility.h
vendored
204
externals/demangle/llvm/Demangle/Utility.h
vendored
|
|
@ -1,5 +1,5 @@
|
|||
//===--- Utility.h ----------------------------------------------*- C++ -*-===//
|
||||
//
|
||||
//===--- Utility.h -------------------*- mode:c++;eval:(read-only-mode) -*-===//
|
||||
// Do not edit! See README.txt.
|
||||
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
||||
// See https://llvm.org/LICENSE.txt for license information.
|
||||
// SPDX-FileCopyrightText: Part of the LLVM Project
|
||||
|
|
@ -7,70 +7,83 @@
|
|||
//
|
||||
//===----------------------------------------------------------------------===//
|
||||
//
|
||||
// Provide some utility classes for use in the demangler(s).
|
||||
// Provide some utility classes for use in the demangler.
|
||||
// There are two copies of this file in the source tree. The one in libcxxabi
|
||||
// is the original and the one in llvm is the copy. Use cp-to-llvm.sh to update
|
||||
// the copy. See README.txt for more details.
|
||||
//
|
||||
//===----------------------------------------------------------------------===//
|
||||
|
||||
#ifndef DEMANGLE_UTILITY_H
|
||||
#define DEMANGLE_UTILITY_H
|
||||
|
||||
#include "StringView.h"
|
||||
#include "DemangleConfig.h"
|
||||
|
||||
#include <array>
|
||||
#include <cassert>
|
||||
#include <cstdint>
|
||||
#include <cstdlib>
|
||||
#include <cstring>
|
||||
#include <iterator>
|
||||
#include <exception>
|
||||
#include <limits>
|
||||
#include <string_view>
|
||||
|
||||
DEMANGLE_NAMESPACE_BEGIN
|
||||
|
||||
// Stream that AST nodes write their string representation into after the AST
|
||||
// has been parsed.
|
||||
class OutputStream {
|
||||
char *Buffer;
|
||||
size_t CurrentPosition;
|
||||
size_t BufferCapacity;
|
||||
class OutputBuffer {
|
||||
char *Buffer = nullptr;
|
||||
size_t CurrentPosition = 0;
|
||||
size_t BufferCapacity = 0;
|
||||
|
||||
// Ensure there is at least n more positions in buffer.
|
||||
// Ensure there are at least N more positions in the buffer.
|
||||
void grow(size_t N) {
|
||||
if (N + CurrentPosition >= BufferCapacity) {
|
||||
size_t Need = N + CurrentPosition;
|
||||
if (Need > BufferCapacity) {
|
||||
// Reduce the number of reallocations, with a bit of hysteresis. The
|
||||
// number here is chosen so the first allocation will more-than-likely not
|
||||
// allocate more than 1K.
|
||||
Need += 1024 - 32;
|
||||
BufferCapacity *= 2;
|
||||
if (BufferCapacity < N + CurrentPosition)
|
||||
BufferCapacity = N + CurrentPosition;
|
||||
if (BufferCapacity < Need)
|
||||
BufferCapacity = Need;
|
||||
Buffer = static_cast<char *>(std::realloc(Buffer, BufferCapacity));
|
||||
if (Buffer == nullptr)
|
||||
std::terminate();
|
||||
}
|
||||
}
|
||||
|
||||
void writeUnsigned(uint64_t N, bool isNeg = false) {
|
||||
// Handle special case...
|
||||
if (N == 0) {
|
||||
*this << '0';
|
||||
return;
|
||||
}
|
||||
OutputBuffer &writeUnsigned(uint64_t N, bool isNeg = false) {
|
||||
std::array<char, 21> Temp;
|
||||
char *TempPtr = Temp.data() + Temp.size();
|
||||
|
||||
char Temp[21];
|
||||
char *TempPtr = std::end(Temp);
|
||||
|
||||
while (N) {
|
||||
*--TempPtr = '0' + char(N % 10);
|
||||
// Output at least one character.
|
||||
do {
|
||||
*--TempPtr = char('0' + N % 10);
|
||||
N /= 10;
|
||||
}
|
||||
} while (N);
|
||||
|
||||
// Add negative sign...
|
||||
// Add negative sign.
|
||||
if (isNeg)
|
||||
*--TempPtr = '-';
|
||||
this->operator<<(StringView(TempPtr, std::end(Temp)));
|
||||
|
||||
return operator+=(
|
||||
std::string_view(TempPtr, Temp.data() + Temp.size() - TempPtr));
|
||||
}
|
||||
|
||||
public:
|
||||
OutputStream(char *StartBuf, size_t Size)
|
||||
: Buffer(StartBuf), CurrentPosition(0), BufferCapacity(Size) {}
|
||||
OutputStream() = default;
|
||||
void reset(char *Buffer_, size_t BufferCapacity_) {
|
||||
CurrentPosition = 0;
|
||||
Buffer = Buffer_;
|
||||
BufferCapacity = BufferCapacity_;
|
||||
OutputBuffer(char *StartBuf, size_t Size)
|
||||
: Buffer(StartBuf), BufferCapacity(Size) {}
|
||||
OutputBuffer(char *StartBuf, size_t *SizePtr)
|
||||
: OutputBuffer(StartBuf, StartBuf ? *SizePtr : 0) {}
|
||||
OutputBuffer() = default;
|
||||
// Non-copyable
|
||||
OutputBuffer(const OutputBuffer &) = delete;
|
||||
OutputBuffer &operator=(const OutputBuffer &) = delete;
|
||||
|
||||
operator std::string_view() const {
|
||||
return std::string_view(Buffer, CurrentPosition);
|
||||
}
|
||||
|
||||
/// If a ParameterPackExpansion (or similar type) is encountered, the offset
|
||||
|
|
@ -78,115 +91,116 @@ public:
|
|||
unsigned CurrentPackIndex = std::numeric_limits<unsigned>::max();
|
||||
unsigned CurrentPackMax = std::numeric_limits<unsigned>::max();
|
||||
|
||||
OutputStream &operator+=(StringView R) {
|
||||
size_t Size = R.size();
|
||||
if (Size == 0)
|
||||
return *this;
|
||||
/// When zero, we're printing template args and '>' needs to be parenthesized.
|
||||
/// Use a counter so we can simply increment inside parentheses.
|
||||
unsigned GtIsGt = 1;
|
||||
|
||||
bool isGtInsideTemplateArgs() const { return GtIsGt == 0; }
|
||||
|
||||
void printOpen(char Open = '(') {
|
||||
GtIsGt++;
|
||||
*this += Open;
|
||||
}
|
||||
void printClose(char Close = ')') {
|
||||
GtIsGt--;
|
||||
*this += Close;
|
||||
}
|
||||
|
||||
OutputBuffer &operator+=(std::string_view R) {
|
||||
if (size_t Size = R.size()) {
|
||||
grow(Size);
|
||||
std::memmove(Buffer + CurrentPosition, R.begin(), Size);
|
||||
std::memcpy(Buffer + CurrentPosition, &*R.begin(), Size);
|
||||
CurrentPosition += Size;
|
||||
}
|
||||
return *this;
|
||||
}
|
||||
|
||||
OutputStream &operator+=(char C) {
|
||||
OutputBuffer &operator+=(char C) {
|
||||
grow(1);
|
||||
Buffer[CurrentPosition++] = C;
|
||||
return *this;
|
||||
}
|
||||
|
||||
OutputStream &operator<<(StringView R) { return (*this += R); }
|
||||
OutputBuffer &prepend(std::string_view R) {
|
||||
size_t Size = R.size();
|
||||
|
||||
OutputStream &operator<<(char C) { return (*this += C); }
|
||||
grow(Size);
|
||||
std::memmove(Buffer + Size, Buffer, CurrentPosition);
|
||||
std::memcpy(Buffer, &*R.begin(), Size);
|
||||
CurrentPosition += Size;
|
||||
|
||||
OutputStream &operator<<(long long N) {
|
||||
if (N < 0)
|
||||
writeUnsigned(static_cast<unsigned long long>(-N), true);
|
||||
else
|
||||
writeUnsigned(static_cast<unsigned long long>(N));
|
||||
return *this;
|
||||
}
|
||||
|
||||
OutputStream &operator<<(unsigned long long N) {
|
||||
writeUnsigned(N, false);
|
||||
return *this;
|
||||
OutputBuffer &operator<<(std::string_view R) { return (*this += R); }
|
||||
|
||||
OutputBuffer &operator<<(char C) { return (*this += C); }
|
||||
|
||||
OutputBuffer &operator<<(long long N) {
|
||||
return writeUnsigned(static_cast<unsigned long long>(std::abs(N)), N < 0);
|
||||
}
|
||||
|
||||
OutputStream &operator<<(long N) {
|
||||
OutputBuffer &operator<<(unsigned long long N) {
|
||||
return writeUnsigned(N, false);
|
||||
}
|
||||
|
||||
OutputBuffer &operator<<(long N) {
|
||||
return this->operator<<(static_cast<long long>(N));
|
||||
}
|
||||
|
||||
OutputStream &operator<<(unsigned long N) {
|
||||
OutputBuffer &operator<<(unsigned long N) {
|
||||
return this->operator<<(static_cast<unsigned long long>(N));
|
||||
}
|
||||
|
||||
OutputStream &operator<<(int N) {
|
||||
OutputBuffer &operator<<(int N) {
|
||||
return this->operator<<(static_cast<long long>(N));
|
||||
}
|
||||
|
||||
OutputStream &operator<<(unsigned int N) {
|
||||
OutputBuffer &operator<<(unsigned int N) {
|
||||
return this->operator<<(static_cast<unsigned long long>(N));
|
||||
}
|
||||
|
||||
void insert(size_t Pos, const char *S, size_t N) {
|
||||
assert(Pos <= CurrentPosition);
|
||||
if (N == 0)
|
||||
return;
|
||||
grow(N);
|
||||
std::memmove(Buffer + Pos + N, Buffer + Pos, CurrentPosition - Pos);
|
||||
std::memcpy(Buffer + Pos, S, N);
|
||||
CurrentPosition += N;
|
||||
}
|
||||
|
||||
size_t getCurrentPosition() const { return CurrentPosition; }
|
||||
void setCurrentPosition(size_t NewPos) { CurrentPosition = NewPos; }
|
||||
|
||||
char back() const {
|
||||
return CurrentPosition ? Buffer[CurrentPosition - 1] : '\0';
|
||||
assert(CurrentPosition);
|
||||
return Buffer[CurrentPosition - 1];
|
||||
}
|
||||
|
||||
bool empty() const { return CurrentPosition == 0; }
|
||||
|
||||
char *getBuffer() { return Buffer; }
|
||||
char *getBufferEnd() { return Buffer + CurrentPosition - 1; }
|
||||
size_t getBufferCapacity() { return BufferCapacity; }
|
||||
size_t getBufferCapacity() const { return BufferCapacity; }
|
||||
};
|
||||
|
||||
template <class T> class SwapAndRestore {
|
||||
T &Restore;
|
||||
T OriginalValue;
|
||||
bool ShouldRestore = true;
|
||||
template <class T> class ScopedOverride {
|
||||
T &Loc;
|
||||
T Original;
|
||||
|
||||
public:
|
||||
SwapAndRestore(T &Restore_) : SwapAndRestore(Restore_, Restore_) {}
|
||||
ScopedOverride(T &Loc_) : ScopedOverride(Loc_, Loc_) {}
|
||||
|
||||
SwapAndRestore(T &Restore_, T NewVal)
|
||||
: Restore(Restore_), OriginalValue(Restore) {
|
||||
Restore = std::move(NewVal);
|
||||
}
|
||||
~SwapAndRestore() {
|
||||
if (ShouldRestore)
|
||||
Restore = std::move(OriginalValue);
|
||||
ScopedOverride(T &Loc_, T NewVal) : Loc(Loc_), Original(Loc_) {
|
||||
Loc_ = std::move(NewVal);
|
||||
}
|
||||
~ScopedOverride() { Loc = std::move(Original); }
|
||||
|
||||
void shouldRestore(bool ShouldRestore_) { ShouldRestore = ShouldRestore_; }
|
||||
|
||||
void restoreNow(bool Force) {
|
||||
if (!Force && !ShouldRestore)
|
||||
return;
|
||||
|
||||
Restore = std::move(OriginalValue);
|
||||
ShouldRestore = false;
|
||||
}
|
||||
|
||||
SwapAndRestore(const SwapAndRestore &) = delete;
|
||||
SwapAndRestore &operator=(const SwapAndRestore &) = delete;
|
||||
ScopedOverride(const ScopedOverride &) = delete;
|
||||
ScopedOverride &operator=(const ScopedOverride &) = delete;
|
||||
};
|
||||
|
||||
inline bool initializeOutputStream(char *Buf, size_t *N, OutputStream &S,
|
||||
size_t InitSize) {
|
||||
size_t BufferSize;
|
||||
if (Buf == nullptr) {
|
||||
Buf = static_cast<char *>(std::malloc(InitSize));
|
||||
if (Buf == nullptr)
|
||||
return false;
|
||||
BufferSize = InitSize;
|
||||
} else
|
||||
BufferSize = *N;
|
||||
|
||||
S.reset(Buf, BufferSize);
|
||||
return true;
|
||||
}
|
||||
|
||||
DEMANGLE_NAMESPACE_END
|
||||
|
||||
#endif
|
||||
|
|
|
|||
Loading…
Reference in a new issue