theory HasESem
imports "Nominal-HOLCF" "Env-HOLCF"
begin
text ‹
local to work abstract in the expression type and semantics.
›
locale has_ESem =
fixes ESem :: "'exp::pt → ('var::at_base → 'value) → 'value::{pure,pcpo}"
begin
abbreviation ESem_syn (‹[ _ ]› [0,0] 110) where "[e]<rho> ≡ ESem e ⋅ ρ"
end
locale has_ignore_fresh_ESem = has_ESem +
assumes fv_supp: "supp e = atom ` (fv e :: 'b set)"
assumes ESem_considers_fv: "[ e ]<rho> = [ e ]<rho> f|` (fv e)"
end
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