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Delta Between Two Patch Sets: compiled/StringScanner.h

Issue 29333474: Issue 4125 - [emscripten] Convert filter classes to C++ (Closed)
Left Patch Set: Improved performance Created Jan. 28, 2016, 2:31 p.m.
Right Patch Set: Addressed comments from Patch Set 28 Created March 21, 2017, 10:04 a.m.
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LEFTRIGHT
1 #ifndef ADBLOCK_PLUS_STRING_SCANNER_H 1 #pragma once
2 #define ADBLOCK_PLUS_STRING_SCANNER_H
3 2
4 #include "String.h" 3 #include "String.h"
5 4
6 class StringScanner 5 class StringScanner
7 { 6 {
8 private: 7 private:
9 String mStr; 8 const DependentString mStr;
10 String::size_type mPos; 9 String::size_type mPos;
11 String::size_type mEnd; 10 String::size_type mEnd;
12 String::value_type mTerminator; 11 String::value_type mTerminator;
13 public: 12 public:
14 StringScanner(const String& str, String::value_type terminator = u'\0') 13 explicit StringScanner(const String& str, String::size_type pos = 0,
15 : mStr(str), mPos(0), mEnd(str.length()), mTerminator(terminator) {} 14 String::value_type terminator = u'\0')
15 : mStr(str), mPos(pos), mEnd(str.length()), mTerminator(terminator) {}
16 16
17 bool done() 17 bool done() const
18 { 18 {
19 return mPos >= mEnd; 19 return mPos >= mEnd;
20 } 20 }
21 21
22 String::size_type position() 22 String::size_type position() const
23 { 23 {
24 return mPos - 1; 24 return mPos - 1;
25 } 25 }
26 26
27 String::value_type next() 27 String::value_type next()
28 { 28 {
29 String::value_type result = done() ? mTerminator : mStr[mPos]; 29 String::value_type result = done() ? mTerminator : mStr[mPos];
30 mPos++; 30 mPos++;
31 return result; 31 return result;
32 } 32 }
33
34 bool skipOne(String::value_type ch)
35 {
36 if (!done() && mStr[mPos] == ch)
37 {
38 mPos++;
39 return true;
40 }
41
42 return false;
43 }
44
45 bool skip(String::value_type ch)
46 {
47 bool skipped = false;
48 while ((skipped = skipOne(ch)));
49 return skipped;
50 }
33 }; 51 };
34
35 #endif
LEFTRIGHT

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