X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/80e2389990082500d76eb566d4946be3e786c3ef..d8f41ccd20de16f8ebe2ccc84d47bf1cb2b26bbb:/libsecurity_codesigning/antlr2/src/TokenBuffer.cpp?ds=inline diff --git a/libsecurity_codesigning/antlr2/src/TokenBuffer.cpp b/libsecurity_codesigning/antlr2/src/TokenBuffer.cpp deleted file mode 100644 index a57e54d2..00000000 --- a/libsecurity_codesigning/antlr2/src/TokenBuffer.cpp +++ /dev/null @@ -1,96 +0,0 @@ -/* 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/src/TokenBuffer.cpp#2 $ - */ - -#include "antlr/TokenBuffer.hpp" - -#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. - *
- * - * @see antlr.Token - * @see antlr.TokenStream - * @see antlr.TokenQueue - */ - -/** Create a token buffer */ -TokenBuffer::TokenBuffer( TokenStream& inp ) -: input(inp) -, nMarkers(0) -, markerOffset(0) -, numToConsume(0) -{ -} - -TokenBuffer::~TokenBuffer( void ) -{ -} - -/** Ensure that the token buffer is sufficiently full */ -void TokenBuffer::fill(unsigned int amount) -{ - syncConsume(); - // Fill the buffer sufficiently to hold needed tokens - while (queue.entries() < (amount + markerOffset)) - { - // Append the next token - queue.append(input.nextToken()); - } -} - -/** Get a lookahead token value */ -int TokenBuffer::LA(unsigned int i) -{ - fill(i); - return queue.elementAt(markerOffset+i-1)->getType(); -} - -/** Get a lookahead token */ -RefToken TokenBuffer::LT(unsigned int i) -{ - fill(i); - return queue.elementAt(markerOffset+i-1); -} - -/** Return an integer marker that can be used to rewind the buffer to - * its current state. - */ -unsigned int TokenBuffer::mark() -{ - syncConsume(); - nMarkers++; - return markerOffset; -} - -/**Rewind the token buffer to a marker. - * @param mark Marker returned previously from mark() - */ -void TokenBuffer::rewind(unsigned int mark) -{ - syncConsume(); - markerOffset=mark; - nMarkers--; -} - -/// Get number of non-consumed tokens -unsigned int TokenBuffer::entries() const -{ - return (unsigned int)queue.entries() - markerOffset; -} - -#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE - } -#endif