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Diffstat (limited to 'runtime/ObjC/Framework/ANTLRCharStream.h')
-rw-r--r-- | runtime/ObjC/Framework/ANTLRCharStream.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/runtime/ObjC/Framework/ANTLRCharStream.h b/runtime/ObjC/Framework/ANTLRCharStream.h new file mode 100644 index 0000000..f7be94b --- /dev/null +++ b/runtime/ObjC/Framework/ANTLRCharStream.h @@ -0,0 +1,49 @@ +// [The "BSD licence"] +// Copyright (c) 2006-2007 Kay Roepke 2010 Alan Condit +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions +// are met: +// 1. Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// 2. Redistributions in binary form must reproduce the above copyright +// notice, this list of conditions and the following disclaimer in the +// documentation and/or other materials provided with the distribution. +// 3. The name of the author may not be used to endorse or promote products +// derived from this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR +// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES +// OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +// IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, +// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +// NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +#import "ANTLRIntStream.h" + +#define ANTLRCharStreamEOF -1 + + +@protocol ANTLRCharStream < ANTLRIntStream > + +- (NSString *) substringWithRange:(NSRange) theRange; + +/** Get the ith character of lookahead. This is the same usually as + * LA(i). This will be used for labels in the generated + * lexer code. I'd prefer to return a char here type-wise, but it's + * probably better to be 32-bit clean and be consistent with LA. + */ +- (NSInteger)LT:(NSInteger) i; + +// ANTLR tracks the line information automatically + +// Because this stream can rewind, we need to be able to reset the line + +// The index of the character relative to the beginning of the line 0..n-1 + +@end |