| ty = mkclasstype(class1), st[r -- _type] .type = mkclasstype(class0), mkfs(class, ty, fieldvar) ' ∈ instfields(class0), is_valid_ref(str, r, st), is_classtype(ty), class0 ≤ class1 ⊦ r = jvmref, ∃ refs. dups(refs) ∧ refs .first = r ∧ validrefs (str, refs, (st[refs .first -- mkfs(class, ty, fieldvar) ', refval(refs .first)][refs .first -- _type]) .type, st[refs .first -- mkfs(class, ty, fieldvar) ', refval(refs .first)]) |
st[r -- _type] .type = mkclasstype(class0), mkfs(class, mkclasstype(class1), fieldvar) ' ∈ instfields(class0), is_valid_ref(str, r, st), class0 ≤ class1 ⊦ r = jvmref, ∃ refs. dups(refs) ∧ refs .first = r ∧ validrefs(str, refs, st[refs .first -- _type] .type, st[refs .first -- mkfs(class, mkclasstype(class1), fieldvar) ', refval(refs .first)])
[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (st[ r0 -- mkfs (class, mkclasstype(class0), fieldvar) ', val] [r -- _type ] ) = st[r -- _type]], [CSIMPSEQ : ⊦ is_classtype(mkclasstype(class))])]]