X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/80e2389990082500d76eb566d4946be3e786c3ef..d8f41ccd20de16f8ebe2ccc84d47bf1cb2b26bbb:/libsecurity_codesigning/antlr2/antlr/TokenBuffer.hpp diff --git a/libsecurity_codesigning/antlr2/antlr/TokenBuffer.hpp b/libsecurity_codesigning/antlr2/antlr/TokenBuffer.hpp deleted file mode 100644 index 948243f3..00000000 --- a/libsecurity_codesigning/antlr2/antlr/TokenBuffer.hpp +++ /dev/null @@ -1,121 +0,0 @@ -#ifndef INC_TokenBuffer_hpp__ -#define INC_TokenBuffer_hpp__ - -/* ANTLR Translator Generator - * Project led by Terence Parr at http://www.jGuru.com - * Software rights: http://www.antlr.org/license.html - * - * $Id: //depot/code/org.antlr/release/antlr-2.7.7/lib/cpp/antlr/TokenBuffer.hpp#2 $ - */ - -#include -#include -#include - -#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE -namespace antlr { -#endif - -/**A Stream of Token objects fed to the parser from a TokenStream that can - * be rewound via mark()/rewind() methods. - *

- * A dynamic array is used to buffer up all the input tokens. Normally, - * "k" tokens are stored in the buffer. More tokens may be stored during - * guess mode (testing syntactic predicate), or when LT(i>k) is referenced. - * Consumption of tokens is deferred. In other words, reading the next - * token is not done by conume(), but deferred until needed by LA or LT. - *

- * - * @todo: see if we can integrate this one with InputBuffer into one template - * or so. - * - * @see antlr.Token - * @see antlr.TokenStream - * @see antlr.TokenQueue - */ -class ANTLR_API TokenBuffer { -public: - /** Create a token buffer */ - TokenBuffer(TokenStream& input_); - virtual ~TokenBuffer(); - - /// Reset the input buffer to empty state - inline void reset( void ) - { - nMarkers = 0; - markerOffset = 0; - numToConsume = 0; - queue.clear(); - } - - /** Get a lookahead token value */ - int LA( unsigned int i ); - - /** Get a lookahead token */ - RefToken LT( unsigned int i ); - - /** Return an integer marker that can be used to rewind the buffer to - * its current state. - */ - unsigned int mark(); - - /**Rewind the token buffer to a marker. - * @param mark Marker returned previously from mark() - */ - void rewind(unsigned int mark); - - /** Mark another token for deferred consumption */ - inline void consume() - { - numToConsume++; - } - - /// Return the number of entries in the TokenBuffer - virtual unsigned int entries() const; - -private: - /** Ensure that the token buffer is sufficiently full */ - void fill(unsigned int amount); - /** Sync up deferred consumption */ - void syncConsume(); - -protected: - /// Token source - TokenStream& input; - - /// Number of active markers - unsigned int nMarkers; - - /// Additional offset used when markers are active - unsigned int markerOffset; - - /// Number of calls to consume() since last LA() or LT() call - unsigned int numToConsume; - - /// Circular queue with Tokens - CircularQueue queue; - -private: - TokenBuffer(const TokenBuffer& other); - const TokenBuffer& operator=(const TokenBuffer& other); -}; - -/** Sync up deferred consumption */ -inline void TokenBuffer::syncConsume() -{ - if (numToConsume > 0) - { - if (nMarkers > 0) - markerOffset += numToConsume; - else - queue.removeItems( numToConsume ); - - numToConsume = 0; - } -} - -#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE -} -#endif - -#endif //INC_TokenBuffer_hpp__