Revision as of 01:35, 9 December 2018

Planning page for JDT Implementation of Switch Expressions (JEP 325) for Java 11

Main tracking bug: bug 542557

Compiler changes

Changes regarding the compiler: bug 542557

Grammar changes

Switch Expression grammar changes - add bug number This would be a major grammar change effort/time estimate for grammar - Currently here - need to rewrite the grammar - est : done

Compiler AST Creation

Tied with parsing - dkne

Flow analysis changes

will have flow analysis changes - in progress - 3 days.

Type checking

Type inference will have to be dom since switch may be an expression - <=5 days?

Error reports

• new error reports. (2 days - in parallel with flow analysis ?) - in progress in parallel

Code generation

Addressing the breaks without label but with expressions and implicit break labels for switch label expressions - 5 days

Java Search support

slight change expected - 2d bug 542559

DOM support

ast changes expected - 1wk - can give an estimate after the compiler ast structure is done - initial discussion done bug 542558

Content Assist support

• additional place the content assist be applicable - 5 days (bug 542560

Code Select support

• additional place the content assist be applicable - 5 days (bug 542561

UI Changes

• Switch ASTs to JLS11 (generic - 1d)

Code hover

• Show inferred type of variable - no change expected

Preferences

• Allow JDT UI to target Java 11 in Compiler Preferences - generic (1d in parallel)

Quick fixes

• convert to a switch statement ( 3 DAYS? jdt.ui to comment)
• coalesce two or more case statements to comma separated case label statements - 4 ays> jdt.ui ? opportunistic

Code templates

• add switch in templates - 1d

JDT Debug

• Expected to have an impact - especially breakpoints - 1w approx