fd3d42ae33
git-subtree-dir: golang-lean git-subtree-mainline:6487c7046fgit-subtree-split:f5f1701922
25 lines
742 B
Text
25 lines
742 B
Text
import GolangLean.AST
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import GolangLean.Env
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import GolangLean.Error
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namespace GolangLean
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/-! # Evaluator — operational big-step interpreter over the AST.
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Mirror of octive-lean's `Eval`. Monad stack `ExceptT GoError (StateT Env IO)`,
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chosen for the same reason: state survives non-local control flow (defer,
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panic, goroutine spawn) carried as exceptions. -/
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abbrev EvalM := ExceptT GoError (StateT Env IO)
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partial def evalExpr (_e : Expr) : EvalM Value :=
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throw (.notImpl "Eval.evalExpr")
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partial def evalStmt (_s : Stmt) : EvalM Unit :=
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throw (.notImpl "Eval.evalStmt")
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def runFile (path : String) : IO UInt32 := do
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IO.eprintln s!"golang-lean: would execute {path} (interpreter not yet implemented)"
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return 1
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end GolangLean
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