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//===--- CodeCompleteConsumer.cpp - Code Completion Interface ---*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the CodeCompleteConsumer class.
//
//===----------------------------------------------------------------------===//
#include "clang/Sema/CodeCompleteConsumer.h"
#include "clang/AST/DeclCXX.h"
#include "clang/Parse/Scope.h"
#include "clang/Lex/Preprocessor.h"
#include "Sema.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
#include <cstring>
#include <functional>
using namespace clang;
//===----------------------------------------------------------------------===//
// Code completion string implementation
//===----------------------------------------------------------------------===//
CodeCompletionString::Chunk::Chunk(ChunkKind Kind, const char *Text)
: Kind(Kind), Text(0)
{
assert((Kind == CK_Text || Kind == CK_Placeholder || Kind == CK_Informative)
&& "Invalid text chunk kind");
char *New = new char [std::strlen(Text) + 1];
std::strcpy(New, Text);
this->Text = New;
}
CodeCompletionString::Chunk
CodeCompletionString::Chunk::CreateText(const char *Text) {
return Chunk(CK_Text, Text);
}
CodeCompletionString::Chunk
CodeCompletionString::Chunk::CreateOptional(
std::auto_ptr<CodeCompletionString> Optional) {
Chunk Result;
Result.Kind = CK_Optional;
Result.Optional = Optional.release();
return Result;
}
CodeCompletionString::Chunk
CodeCompletionString::Chunk::CreatePlaceholder(const char *Placeholder) {
return Chunk(CK_Placeholder, Placeholder);
}
CodeCompletionString::Chunk
CodeCompletionString::Chunk::CreateInformative(const char *Informative) {
return Chunk(CK_Informative, Informative);
}
void
CodeCompletionString::Chunk::Destroy() {
switch (Kind) {
case CK_Optional:
delete Optional;
break;
case CK_Text:
case CK_Placeholder:
case CK_Informative:
delete [] Text;
break;
}
}
CodeCompletionString::~CodeCompletionString() {
std::for_each(Chunks.begin(), Chunks.end(),
std::mem_fun_ref(&Chunk::Destroy));
}
std::string CodeCompletionString::getAsString() const {
std::string Result;
llvm::raw_string_ostream OS(Result);
for (iterator C = begin(), CEnd = end(); C != CEnd; ++C) {
switch (C->Kind) {
case CK_Text: OS << C->Text; break;
case CK_Optional: OS << "{#" << C->Optional->getAsString() << "#}"; break;
case CK_Placeholder: OS << "<#" << C->Text << "#>"; break;
case CK_Informative: OS << "[#" << C->Text << "#]"; break;
}
}
OS.flush();
return Result;
}
//===----------------------------------------------------------------------===//
// Code completion overload candidate implementation
//===----------------------------------------------------------------------===//
FunctionDecl *
CodeCompleteConsumer::OverloadCandidate::getFunction() const {
if (getKind() == CK_Function)
return Function;
else if (getKind() == CK_FunctionTemplate)
return FunctionTemplate->getTemplatedDecl();
else
return 0;
}
const FunctionType *
CodeCompleteConsumer::OverloadCandidate::getFunctionType() const {
switch (Kind) {
case CK_Function:
return Function->getType()->getAs<FunctionType>();
case CK_FunctionTemplate:
return FunctionTemplate->getTemplatedDecl()->getType()
->getAs<FunctionType>();
case CK_FunctionType:
return Type;
}
return 0;
}
//===----------------------------------------------------------------------===//
// Code completion consumer implementation
//===----------------------------------------------------------------------===//
CodeCompleteConsumer::~CodeCompleteConsumer() { }
void
PrintingCodeCompleteConsumer::ProcessCodeCompleteResults(Result *Results,
unsigned NumResults) {
// Print the results.
for (unsigned I = 0; I != NumResults; ++I) {
OS << "COMPLETION: ";
switch (Results[I].Kind) {
case Result::RK_Declaration:
OS << Results[I].Declaration->getNameAsString() << " : "
<< Results[I].Rank;
if (Results[I].Hidden)
OS << " (Hidden)";
if (CodeCompletionString *CCS
= Results[I].CreateCodeCompletionString(SemaRef)) {
OS << " : " << CCS->getAsString();
delete CCS;
}
OS << '\n';
break;
case Result::RK_Keyword:
OS << Results[I].Keyword << " : " << Results[I].Rank << '\n';
break;
}
}
// Once we've printed the code-completion results, suppress remaining
// diagnostics.
// FIXME: Move this somewhere else!
SemaRef.PP.getDiagnostics().setSuppressAllDiagnostics();
}
void
PrintingCodeCompleteConsumer::ProcessOverloadCandidates(unsigned CurrentArg,
OverloadCandidate *Candidates,
unsigned NumCandidates) {
for (unsigned I = 0; I != NumCandidates; ++I) {
if (CodeCompletionString *CCS
= Candidates[I].CreateSignatureString(CurrentArg, SemaRef)) {
OS << "OVERLOAD: " << CCS->getAsString() << "\n";
delete CCS;
}
}
// Once we've printed the code-completion results, suppress remaining
// diagnostics.
// FIXME: Move this somewhere else!
SemaRef.PP.getDiagnostics().setSuppressAllDiagnostics();
}
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