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mescc: allow complicated enums expressions.

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* module/language/c99/compiler.mes (p-expr->number): Support lshift, rshift, ash.
  (enum-def-list->constants): Refactor using p-expr->number.
This commit is contained in:
rain1 2017-07-30 08:28:19 -04:00 committed by Jan Nieuwenhuizen
parent 3f188d7268
commit ae9ce4e645
1 changed files with 5 additions and 5 deletions
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10
module/language/c99/compiler.mes
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@ -1503,6 +1503,10 @@
((sizeof-expr (i-sel (ident ,field) (p-expr (ident ,struct))))
(let ((type (ident->type info struct)))
(field-size info type field)))
((lshift ,x ,y)
(ash (p-expr->number info x) (p-expr->number info y)))
((rshift ,x ,y)
(ash (p-expr->number info x) (- (p-expr->number info y))))
((p-expr (ident ,name))
(let ((value (assoc-ref (.constants info) name)))
(or value
@ -2353,12 +2357,8 @@
(name (pmatch field
((enum-defn (ident ,name) . _) name)))
(i (pmatch field
((enum-defn ,name (p-expr (fixed ,value))) (cstring->number value))
((enum-defn ,name) i)
((enum-defn ,name (add (p-expr (fixed ,a)) (p-expr (fixed ,b))))
(+ (cstring->number a) (cstring->number b)))
((enum-defn ,name (sub (p-expr (fixed ,a)) (p-expr (fixed ,b))))
(- (cstring->number a) (cstring->number b)))
((enum-defn ,name ,exp) (p-expr->number #f exp))
(_ (error "not supported enum field=~s\n" field)))))
(loop (cdr fields)
(1+ i)