[Webkit-unassigned] [Bug 245859] New: [WGSL] Don't parse literals in lexer

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=245859

            Bug ID: 245859
           Summary: [WGSL] Don't parse literals in lexer
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebGPU
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: djg at apple.com

WGSL current parses numeric literals during lexical analysis into `double`s. This might be fine for 32-bit integers but isn't sufficient if WGSL adds 64-bit integers.

We should instead pattern match on the format for numeric literals, classify them and defer the validation of literals to a later pass after type checking has been performed. This also requires handling of half floats.

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