[SR-11580] FloatLiteralExprSyntax and IntegerLiteralExprSyntax should have computed properties that return their integer/float value

[ahoppen]

Previous ID	SR-11580
Radar	None
Original Reporter	@ahoppen
Type	New Feature
Status	Resolved
Resolution	Done

Additional Detail from JIRA

Votes	0
Component/s	SwiftSyntax
Labels	New Feature, StarterBug
Assignee	vermont42 (JIRA)
Priority	Medium

md5: b8b8d3a1a602fe052d3a131ced13afd6

Issue Description:

Often, when dealing with FloatLiteralExprSyntax or IntegerLiteralExprSyntax, you want to get the value they represent. SwiftSyntax should provide computed properties that return these.

The catch with it is, that we need to support all kinds of literals that are supported in Swift. In addition to the obvious ones this includes:

• Literals with underscores

• Hexadecimal int literals

• Octal int literals

• Binary int literals

• Exponential float literals (e.g. 5e+2)

• Hexadecimal float literals with possible exponents (e.g. 0x5.fp+2)

#148 started implementing these but gave up on the less obvious literals.

[swift-ci]

Comment by Josh Adams (JIRA)

After corresponding with @ahoppen and performing some exploratory work here, I have assigned myself this story. I intend to raise a PR when development is complete.

[swift-ci]

Comment by Josh Adams (JIRA)

Implemented in these two PRs.