Class Lex
Represents Lexical Analyzer Object
Defined in: lex01.js.
| Constructor Attributes | Constructor Name and Description |
|---|---|
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Lex(src)
Lexical Analyzer Object
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| Field Attributes | Field Name and Description |
|---|---|
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buffer pointer (0 origin)
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source string buffer
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| Method Attributes | Method Name and Description |
|---|---|
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ch(cChar)
Given Character
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digit()
Analyze Digit
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eod()
End of Data
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lower()
Analyze Lower Case Character
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rewind()
Rewind
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upper()
Analyze Upper Case Character
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Class Detail
Lex(src)
Lexical Analyzer Object
- Parameters:
- {String} src
- source string to analyze
- Since:
- 0.1
Field Detail
{Number}
iBufPtr
buffer pointer (0 origin)
{String}
sBuf
source string buffer
Method Detail
{Char}
ch(cChar)
Given Character
- Parameters:
- {Char} cChar
- given character
- Since:
- 0.1
- Returns:
- {Char} character or null if not matched
{Char}
digit()
Analyze Digit
- Since:
- 0.1
- Returns:
- {Char} digit or null if not matched
{Boolean}
eod()
End of Data
- Since:
- 0.1
- Returns:
- {Boolean} true if buffer pointer comes at end of data
{Char}
lower()
Analyze Lower Case Character
- Since:
- 0.1
- Returns:
- {Char} lower case character or null if not matched
rewind()
Rewind
- Since:
- 0.1
{Char}
upper()
Analyze Upper Case Character
- Since:
- 0.1
- Returns:
- {Char} upper case character or null if not matched