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CPS IR, done, TODO: closure conversion
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,12 @@ | ||
| struct CpsEnv { | ||
| counter : Ref[Int] | ||
| } | ||
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| pub fn CpsEnv::new(counter : Int) -> CpsEnv { | ||
| { counter: { val: counter } } | ||
| } | ||
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| fn CpsEnv::new_tmp(self : CpsEnv, t : T) -> Var { | ||
| self.counter.val = self.counter.val + 1 | ||
| { name: { val: None }, id: self.counter.val, ty: t } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,86 @@ | ||
| struct Var { | ||
| name : Ref[String?] | ||
| id : Int | ||
| ty : T | ||
| } | ||
|
|
||
| fn Var::op_equal(lhs : Var, rhs : Var) -> Bool { | ||
| lhs.id == rhs.id | ||
| } | ||
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| fn Var::from_precps(v : @precps.Var, t : T) -> Var { | ||
| { id: v.id, name: { val: v.name }, ty: t } | ||
| } | ||
|
|
||
| enum Value { | ||
| Var(Var) | ||
| Label(Var) | ||
| Unit | ||
| Int(Int) | ||
| Double(Double) | ||
| } derive(Eq) | ||
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| fn Value::replace_var_bind(self : Value, from : Var, to : Value) -> Value { | ||
| match self { | ||
| Var(v) => if v == from { to } else { self } | ||
| _ => self | ||
| } | ||
| } | ||
|
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| enum AccessPath { | ||
| OffP(Int) | ||
| SelP(Int, AccessPath) | ||
| } derive(Show) | ||
|
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| pub enum Cps { | ||
| // T marks the binding's type | ||
| Record(Array[(Value, AccessPath)], Var, Cps) | ||
| Select(Int, Value, Var, Cps) | ||
| Offset(Int, Value, Var, Cps) | ||
| Fix(Var, Array[Var], Cps, Cps) | ||
| Switch(Value, Array[Cps]) | ||
| Prim(PrimOp, Array[Value], Var, Cps) | ||
| // T marks the return type | ||
| App(Value, Array[Value]) | ||
| Just(Value) | ||
| } | ||
|
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| fn Cps::replace_var_bind(self : Cps, from : Var, to : Value) -> Cps { | ||
| fn rec(s : Cps) { | ||
| s.replace_var_bind(from, to) | ||
| } | ||
|
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||
| fn recv(v : Value) { | ||
| v.replace_var_bind(from, to) | ||
| } | ||
|
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| match self { | ||
| Record(record, bind, rest) => { | ||
| let rest_new = if from != bind { rec(rest) } else { rest } | ||
| Record(record.map(fn { (v, path) => (recv(v), path) }), bind, rest_new) | ||
| } | ||
| Select(idx, v, bind, rest) => { | ||
| let rest_new = if from != bind { rec(rest) } else { rest } | ||
| Select(idx, recv(v), bind, rest_new) | ||
| } | ||
| Offset(idx, v, bind, rest) => { | ||
| let rest_new = if from != bind { rec(rest) } else { rest } | ||
| Offset(idx, recv(v), bind, rest_new) | ||
| } | ||
| Fix(name, args, body, rest) => { | ||
| let body_new = if from != name && not(args.contains(from)) { | ||
| rec(body) | ||
| } else { | ||
| body | ||
| } | ||
| let rest_new = if from != name { rec(rest) } else { body } | ||
| Fix(name, args, body_new, rest_new) | ||
| } | ||
| Switch(v, branches) => Switch(recv(v), branches.map(rec)) | ||
| Prim(op, args, bind, rest) => { | ||
| let rest_new = if from != bind { rec(rest) } else { rest } | ||
| Prim(op, args.map(recv), bind, rest_new) | ||
| } | ||
| App(f, args) => App(recv(f), args.map(recv)) | ||
| } | ||
| } |
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