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8233116: Escape Sequences For Line Continuation and White Space (Preview)

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Reviewed-by: vromero, jlahoda, bchristi, mcimadamore
This commit is contained in:
Jim Laskey 2019-12-03 08:35:21 -04:00
parent 7afaaf1229
commit 234f326d79
6 changed files with 249 additions and 138 deletions
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20
src/java.base/share/classes/java/lang/String.java
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@ -3062,6 +3062,11 @@ public final class String
* <td>{@code U+000D}</td>
* </tr>
* <tr>
* <th scope="row">{@code \u005Cs}</th>
* <td>space</td>
* <td>{@code U+0020}</td>
* </tr>
* <tr>
* <th scope="row">{@code \u005C"}</th>
* <td>double quote</td>
* <td>{@code U+0022}</td>
@ -3081,6 +3086,11 @@ public final class String
* <td>octal escape</td>
* <td>code point equivalents</td>
* </tr>
* <tr>
* <th scope="row">{@code \u005C<line-terminator>}</th>
* <td>continuation</td>
* <td>discard</td>
* </tr>
* </tbody>
* </table>
*
@ -3124,6 +3134,9 @@ public final class String
case 'r':
ch = '\r';
break;
case 's':
ch = ' ';
break;
case 't':
ch = '\t';
break;
@ -3146,6 +3159,13 @@ public final class String
}
ch = (char)code;
break;
case '\n':
continue;
case '\r':
if (from < length && chars[from] == '\n') {
from++;
}
continue;
default: {
String msg = String.format(
"Invalid escape sequence: \\%c \\\\u%04X",