1c6759298b
git-svn-id: http://root.cern.ch/svn/root/trunk@46540 27541ba8-7e3a-0410-8455-c3a389f83636
58 lines
1.6 KiB
C++
58 lines
1.6 KiB
C++
//------------------------------------------------------------------------------
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// CLING - the C++ LLVM-based InterpreterG :)
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// version: $Id$
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// author: Axel Naumann <axel@cern.ch>
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//------------------------------------------------------------------------------
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#include "InputValidator.h"
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#include "clang/Lex/Preprocessor.h"
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using namespace clang;
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namespace cling {
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InputValidator::ValidationResult
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InputValidator::validate(llvm::StringRef line, LangOptions& LO) {
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if (!m_Input.empty())
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m_Input.append("\n");
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else
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m_Input = "";
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m_Input.append(line);
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llvm::OwningPtr<llvm::MemoryBuffer> MB;
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MB.reset(llvm::MemoryBuffer::getMemBuffer(line));
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Lexer RawLexer(SourceLocation(), LO, MB->getBufferStart(),
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MB->getBufferStart(), MB->getBufferEnd());
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Token Tok;
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do {
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RawLexer.LexFromRawLexer(Tok);
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int kind = (int)Tok.getKind();
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if (kind >= (int)tok::l_square
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&& kind <= (int)tok::r_brace) {
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kind -= (int)tok::l_square;
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if (kind % 2) {
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// closing the right one?
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if (m_ParenStack.empty()) return kMismatch;
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int prev = m_ParenStack.top();
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if (prev != kind - 1) return kMismatch;
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m_ParenStack.pop();
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} else {
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m_ParenStack.push(kind);
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}
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}
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}
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while (Tok.isNot(tok::eof));
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if (!m_ParenStack.empty())
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return kIncomplete;
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return kComplete;
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}
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void InputValidator::reset() {
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m_Input = "";
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while (!m_ParenStack.empty())
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m_ParenStack.pop();
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}
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} // end namespace cling
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