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• Parser
• Parse-exprs/decls/stmts

Parse-conditional-expression

Parse a conditional expression.

Signature

(parse-conditional-expression parstate) 
  → 
(mv erp expr span new-parstate)

Arguments

parstate — Guard (parstatep parstate).

Returns

expr — Type (exprp expr).

span — Type (spanp span).

new-parstate — Type (parstatep new-parstate), given (parstatep parstate).

According to the grammar, this may be not only a conditional expression, but also a logical disjunction expression. These two both start with a logical disjunction expression, which we parse first, and then we check whether there is a ?: if there is, it must be a conditional expression proper; if there is not, it must be a logical disjunction expression.

If GCC extensions are enabled, we also allow the omission of the `then' sub-expression; see the ABNF grammar.