| | 1 | // © 2016 and later: Unicode, Inc. and others. |
| | 2 | // License & terms of use: http://www.unicode.org/copyright.html |
| | 3 | /* |
| | 4 | ********************************************************************** |
| | 5 | * Copyright (c) 2004-2011, International Business Machines |
| | 6 | * Corporation and others. All Rights Reserved. |
| | 7 | ********************************************************************** |
| | 8 | * Author: Alan Liu |
| | 9 | * Created: March 22 2004 |
| | 10 | * Since: ICU 3.0 |
| | 11 | ********************************************************************** |
| | 12 | */ |
| | 13 | #ifndef __ICU_INTLTEST_TOKITER__ |
| | 14 | #define __ICU_INTLTEST_TOKITER__ |
| | 15 | |
| | 16 | #include "intltest.h" |
| | 17 | |
| | 18 | class TextFile; |
| | 19 | |
| | 20 | /** |
| | 21 | * An iterator class that returns successive string tokens from some |
| | 22 | * source. String tokens are, in general, separated by Pattern_White_Space |
| | 23 | * in the source test. Furthermore, they may be delimited by |
| | 24 | * either single or double quotes (opening and closing quotes must |
| | 25 | * match). Escapes are processed using standard ICU unescaping. |
| | 26 | */ |
| | 27 | class TokenIterator { |
| | 28 | public: |
| | 29 | |
| | 30 | /** |
| | 31 | * Construct an iterator over the tokens returned by the given |
| | 32 | * TextFile, ignoring blank lines and comment lines (first |
| | 33 | * non-blank character is '#'). Note that trailing comments on a |
| | 34 | * line, beginning with the first unquoted '#', are recognized. |
| | 35 | */ |
| | 36 | TokenIterator(TextFile* r); |
| | 37 | |
| | 38 | virtual ~TokenIterator(); |
| | 39 | |
| | 40 | /** |
| | 41 | * Return the next token from this iterator. |
| | 42 | * @return TRUE if a token was read, or FALSE if no more tokens |
| | 43 | * are available or an error occurred. |
| | 44 | */ |
| | 45 | UBool next(UnicodeString& token, UErrorCode& ec); |
| | 46 | |
| | 47 | /** |
| | 48 | * Return the one-based line number of the line of the last token |
| | 49 | * returned by next(). Should only be called after a call to |
| | 50 | * next(); otherwise the return value is undefined. |
| | 51 | */ |
| | 52 | int32_t getLineNumber() const; |
| | 53 | |
| | 54 | /** |
| | 55 | * Return a string description of the position of the last line |
| | 56 | * returned by readLine() or readLineSkippingComments(). |
| | 57 | */ |
| | 58 | //public String describePosition() { |
| | 59 | // return reader.describePosition() + ':' + (lastpos+1); |
| | 60 | //} |
| | 61 | |
| | 62 | private: |
| | 63 | UBool nextToken(UnicodeString& token, UErrorCode& ec); |
| | 64 | |
| | 65 | TextFile* reader; // alias |
| | 66 | UnicodeString line; |
| | 67 | UBool done; |
| | 68 | UBool haveLine; |
| | 69 | int32_t pos; |
| | 70 | int32_t lastpos; |
| | 71 | }; |
| | 72 | |
| | 73 | #endif |
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