CaseCanonicalize (Closure Compiler)

java.lang.Object
- com.google.javascript.jscomp.regex.CaseCanonicalize

```
public final class CaseCanonicalize
extends Object
```
Implements the ECMAScript 5 Canonicalize operation used to specify how case-insensitive regular expressions match.
From section 15.10.2.9,
The abstract operation Canonicalize takes a character parameter ch and performs the following steps:
- If IgnoreCase is false, return ch.
- Let u be ch converted to upper case as if by calling the standard built-in method String.prototype.toUpperCase on the one-character String ch.
- If u does not consist of a single character, return ch.
- Let cu be u's character.
- If ch's code unit value is greater than or equal to decimal 128 and cu's code unit value is less than decimal 128, then return ch.
- Return cu.

Field Summary

Fields
Modifier and Type	Field and Description
`static com.google.javascript.jscomp.regex.CharRanges`	`CASE_SENSITIVE` Set of code units that are case-insensitively equivalent to some other code unit according to the EcmaScript Canonicalize operation described in section 15.10.2.8.

Method Summary

Methods
Modifier and Type	Method and Description
`static char`	`caseCanonicalize(char ch)` Returns the case canonical version of the given code-unit.
`static String`	`caseCanonicalize(String s)` Returns the case canonical version of the given string.
`static com.google.javascript.jscomp.regex.CharRanges`	`expandToAllMatched(com.google.javascript.jscomp.regex.CharRanges ranges)` Given a character range that may include case sensitive code-units, such as `[0-9B-M]`, returns the character range that includes all the code-units in the input and those that are case-insensitively equivalent to a code-unit in the input.
`static com.google.javascript.jscomp.regex.CharRanges`	`reduceToMinimum(com.google.javascript.jscomp.regex.CharRanges ranges)` Given a character range that may include case sensitive code-units, such as `[0-9B-M]`, returns the character range that includes the minimal set of code units such that for every code unit in the input there is a case-sensitively equivalent canonical code unit in the output.

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

- Field Detail
  - CASE_SENSITIVE
```
public static final com.google.javascript.jscomp.regex.CharRanges CASE_SENSITIVE
```
    Set of code units that are case-insensitively equivalent to some other code unit according to the EcmaScript Canonicalize operation described in section 15.10.2.8. The case sensitive characters are the ones that canonicalize to a character other than themselves or have a character that canonicalizes to them. Canonicalize is based on the definition of String.prototype.toUpperCase which is itself based on Unicode 3.0.0 as specified at UnicodeData-3.0.0 and SpecialCasings-2.txt .
    This table was generated by running the below on Chrome:
```
 for (var cc = 0; cc < 0x10000; ++cc) {
   var ch = String.fromCharCode(cc);
   var u = ch.toUpperCase();
   if (ch != u && u.length === 1) {
     var cu = u.charCodeAt(0);
     if (cc <= 128 || u.charCodeAt(0) > 128) {
       print('0x' + cc.toString(16) + ', 0x' + cu.toString(16) + ',');
     }
   }
 }
 
```
- Method Detail
  - caseCanonicalize
```
public static String caseCanonicalize(String s)
```
    Returns the case canonical version of the given string.
  - caseCanonicalize
```
public static char caseCanonicalize(char ch)
```
    Returns the case canonical version of the given code-unit. ECMAScript 5 explicitly says that code-units are to be treated as their code-point equivalent, even surrogates.
  - expandToAllMatched
```
public static com.google.javascript.jscomp.regex.CharRanges expandToAllMatched(com.google.javascript.jscomp.regex.CharRanges ranges)
```
    Given a character range that may include case sensitive code-units, such as [0-9B-M], returns the character range that includes all the code-units in the input and those that are case-insensitively equivalent to a code-unit in the input.
  - reduceToMinimum
```
public static com.google.javascript.jscomp.regex.CharRanges reduceToMinimum(com.google.javascript.jscomp.regex.CharRanges ranges)
```
    Given a character range that may include case sensitive code-units, such as [0-9B-M], returns the character range that includes the minimal set of code units such that for every code unit in the input there is a case-sensitively equivalent canonical code unit in the output.

Class CaseCanonicalize

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

CASE_SENSITIVE

Method Detail

caseCanonicalize

caseCanonicalize

expandToAllMatched

reduceToMinimum