java.lang.Object
- org.antlr.v4.misc.CharSupport

```
public class CharSupport
extends Object
```

Field Summary

Fields
Modifier and Type	Field	Description
`static String[]`	`ANTLRLiteralCharValueEscape`	Given a char, we need to be able to show as an ANTLR literal.
`static int[]`	`ANTLRLiteralEscapedCharValue`	When converting ANTLR char and string literals, here is the value set of escape chars.

Constructor Summary

Constructors
Constructor Description

CharSupport()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static String`	`capitalize(String s)`
`static String`	`getANTLRCharLiteralForChar(int c)`	Return a string representing the escaped char for code c.
`static int`	`getCharValueFromCharInGrammarLiteral(String cstr)`	Given char x or \\t or \\u1234 return the char value; Unnecessary escapes like '\{' yield -1.
`static int`	`getCharValueFromGrammarCharLiteral(String literal)`	Given a literal like (the 3 char sequence with single quotes) 'a', return the int value of 'a'.
`static String`	`getIntervalSetEscapedString(IntervalSet intervalSet)`
`static String`	`getRangeEscapedString(int codePointStart, int codePointEnd)`
`static String`	`getStringFromGrammarStringLiteral(String literal)`
`static int`	`parseHexValue(String cstr, int startOff, int endOff)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - ANTLRLiteralEscapedCharValue
```
public static final int[] ANTLRLiteralEscapedCharValue
```
    When converting ANTLR char and string literals, here is the value set of escape chars.
  - ANTLRLiteralCharValueEscape
```
public static final String[] ANTLRLiteralCharValueEscape
```
    Given a char, we need to be able to show as an ANTLR literal.
- Constructor Detail
  - CharSupport
```
public CharSupport()
```
- Method Detail
  - getANTLRCharLiteralForChar
```
public static String getANTLRCharLiteralForChar(int c)
```
    Return a string representing the escaped char for code c. E.g., If c has value 0x100, you will get "\\u0100". ASCII gets the usual char (non-hex) representation. Non-ASCII characters are spit out as \\uXXXX or \\u{XXXXXX} escapes.
  - getCharValueFromGrammarCharLiteral
```
public static int getCharValueFromGrammarCharLiteral(String literal)
```
    Given a literal like (the 3 char sequence with single quotes) 'a', return the int value of 'a'. Convert escape sequences here also. Return -1 if not single char.
  - getStringFromGrammarStringLiteral
```
public static String getStringFromGrammarStringLiteral(String literal)
```
  - getCharValueFromCharInGrammarLiteral
```
public static int getCharValueFromCharInGrammarLiteral(String cstr)
```
    Given char x or \\t or \\u1234 return the char value; Unnecessary escapes like '\{' yield -1.
  - parseHexValue
```
public static int parseHexValue(String cstr,
                                int startOff,
                                int endOff)
```
  - capitalize
```
public static String capitalize(String s)
```
  - getIntervalSetEscapedString
```
public static String getIntervalSetEscapedString(IntervalSet intervalSet)
```
  - getRangeEscapedString
```
public static String getRangeEscapedString(int codePointStart,
                                           int codePointEnd)
```

Class CharSupport

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

ANTLRLiteralEscapedCharValue

ANTLRLiteralCharValueEscape

Constructor Detail

CharSupport

Method Detail

getANTLRCharLiteralForChar

getCharValueFromGrammarCharLiteral

getStringFromGrammarStringLiteral

getCharValueFromCharInGrammarLiteral

parseHexValue

capitalize

getIntervalSetEscapedString

getRangeEscapedString