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  • Abstract-syntax

Literal

Fixtype of literals.

This is a tagged union type, introduced by fty::deftagsum.

Member Tags → Types
:boolean → literal-boolean
:dec-number → literal-dec-number
:hex-number → literal-hex-number
:plain-string → literal-plain-string
:hex-string → literal-hex-string

Boolean literals are straightforward.

We represent a decimal literal as a natural number. Since the Yul grammar requires no leading zeros in decimal numbers, a natural number captures the full information.

We represent a hexadecimal literal as a list of hex digits, which therefore captures full information: leading zeros and capitalization of the letters.

We represent plain and hex strings as described in plain-string and hex-string.

Subtopics

Literal-fix
Fixing function for literal structures.
Literal-case
Case macro for the different kinds of literal structures.
Literalp
Recognizer for literal structures.
Literal-equiv
Basic equivalence relation for literal structures.
Literal-plain-string
Literal-hex-string
Literal-hex-number
Literal-boolean
Literal-dec-number
Literal-kind
Get the kind (tag) of a literal structure.