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kernel
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@erikerlandson
erikerlandson committed Jan 31, 2023
1 parent 2e89131 commit 618fbf3
Showing 1 changed file with 52 additions and 159 deletions.
211 changes: 52 additions & 159 deletions parser/src/main/scala/coulomb/parser/parser.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -20,29 +20,8 @@ import scala.quoted.*

import coulomb.*
import coulomb.syntax.*
import coulomb.units.si.*
import coulomb.units.us.*
import coulomb.conversion.*

import coulomb.rational.Rational

final class RuntimeContext[UnitDefs]
object RuntimeContext:
final type &:[H, T]
final type TNil

def apply[D](): RuntimeContext[D] = new RuntimeContext[D]

object runtime:
import coulomb.define.*
import RuntimeContext.{&:, TNil}
import coulomb.units.si.*
import coulomb.units.si.prefixes.*
given given_context: RuntimeContext[
BaseUnit[Meter, "meter", "m"] &:
DerivedUnit[Kilo, 10 ^ 3, "kilo", "k"] &: TNil
] = RuntimeContext()

sealed abstract class UnitAST:
def *(rhs: UnitAST): UnitAST.Mul = UnitAST.Mul(this, rhs)
def /(den: UnitAST): UnitAST.Div = UnitAST.Div(this, den)
Expand All @@ -53,92 +32,36 @@ object UnitAST:
case class Mul(lhs: UnitAST, rhs: UnitAST) extends UnitAST
case class Div(num: UnitAST, den: UnitAST) extends UnitAST
case class Pow(b: UnitAST, e: Rational) extends UnitAST
inline def of[U]: UnitType = ${ meta.astunit[U] }

object test:
// fully qualified type name
inline def fqtn[T]: String = ${ meta.fqtn[T] }

inline def m[T]: Map[String, String] = ${ meta.m[T] }

def s(astf: UnitAST, astt: UnitAST)(using staging.Compiler): Double =
staging.run {
import quotes.reflect.*

val tf = meta.astTypeRepr(astf)
val tt = meta.astTypeRepr(astt)

println(s"tf= ${tf.show}")
println(s"tt= ${tt.show}")

val r = (tf.asType, tt.asType) match
case ('[f], '[t]) =>
'{ coulomb.conversion.coefficients.coefficientDouble[f, t] }

println("hi")
r
}

// this compiles and "runs" but run-time fails trying to find
// coulomb implicits - so the staging compiler
// currently doesn't work for finding imported implicits
// unsure if this is due to bad class loader or something else
def q(v: Double, u: String)(using
staging.Compiler
): Quantity[Double, Meter] = staging.run {
// inside this scope Quotes is defined

println(s"get f...")
val f = meta.qqq(u)

println(s"apply f...")
'{ (${ f })(${ Expr(v) }) }
}

// invoke qqq without staging compiler
// this works because it is bypassing the staging compiler
inline def qq(u: String): (Double => Quantity[Double, Meter]) =
${ meta.qq('u) }

inline def bu: Unit =
${ meta.bu }
inline def of[U]: UnitAST = ${ meta.unitAST[U] }

object meta:
import scala.unchecked
import scala.language.implicitConversions

def bu(using Quotes): Expr[Unit] =
import quotes.reflect.*
val m = baseunittree(fqTypeRepr("coulomb.units.si.Meter"))
println(s"m= $m")
println(s"m= ${m.symbol.fullName}")
val t = symbolValueType(fqFieldSymbol(m.symbol.fullName))
println(s"t= ${t.show}")
/*
val s2 = fqFieldSymbol("coulomb.units.si.ctx_unit_Meter")
val s3 = fqFieldSymbol("coulomb.units.us.ctx_unit_Meter")
println(s"${s2.tree.show}")
println(s"${s3.tree.show}")
println(s"${s2.typeRef}")
println(s"${s3.typeRef}")
println(s"${s2.termRef}")
println(s"${s3.termRef}")
val r2 = Ref.term(s2.termRef)
println(s"$r2")
val r3 = Ref.term(s3.termRef)
println(s"$r3")
val u2 = r2.underlying
println(s"${u2.show}")
val u3 = r3.underlying
println(s"${u3.show}")
val t2 = symbolValueType(fqFieldSymbol("coulomb.units.si$.ctx_unit_Meter"))
println(s"${t2.show}")
println(s"${t2.widen.show}")
val t3 = symbolValueType(fqFieldSymbol("coulomb.units.us$.ctx_unit_Meter"))
println(s"${t3.show}")
println(s"${t3.widen.show}")
*/
'{ () }
import coulomb.conversion.coefficients.{meta => _, *}
import coulomb.infra.meta.{*, given}

given ctx_UnitASTToExpr: ToExpr[UnitAST] with
def apply(ast: UnitAST)(using Quotes): Expr[UnitAST] =
ast match
case UnitAST.UnitType(path) =>
'{ UnitAST.UnitType(${ Expr(path) }) }
case UnitAST.Mul(l, r) =>
'{ UnitAST.Mul(${ Expr(l) }, ${ Expr(r) }) }
case UnitAST.Div(n, d) =>
'{ UnitAST.Div(${ Expr(n) }, ${ Expr(d) }) }
case UnitAST.Pow(b, e) =>
'{ UnitAST.Pow(${ Expr(b) }, ${ Expr(e) }) }

def kernel(v: Rational, astF: UnitAST, astT: UnitAST)(using
staging.Compiler
): Rational =
staging.run {
import quotes.reflect.*
(astTypeRepr(astF).asType, astTypeRepr(astT).asType) match
case ('[uf], '[ut]) =>
'{ ${ Expr(v) } * coefficientRational[uf, ut] }
}

def baseunittree(using Quotes)(
u: quotes.reflect.TypeRepr
Expand All @@ -152,46 +75,9 @@ object meta:
case iss: ImplicitSearchSuccess => iss.tree
case _ => Literal(UnitConstant())

def qq(u: Expr[String])(using
Quotes
): Expr[Double => Quantity[Double, Meter]] =
qqq(u.valueOrAbort)

def qqq(u: String)(using
Quotes
): Expr[Double => Quantity[Double, Meter]] =
def unitAST[U](using Quotes, Type[U]): Expr[UnitAST] =
import quotes.reflect.*

// this eventually builds arbitrary unit expr via parsing
val t = u match
case "meter" => fqTypeRepr("coulomb.units.si.Meter")
case "second" => fqTypeRepr("coulomb.units.si.Second")
case _ => TypeRepr.of[Unit]

// val ttt = fqTypeRepr("coulomb.units.si.Meter")
// assert(ttt =:= TypeRepr.of[coulomb.units.si.Meter])

val s = fqFieldSymbol("coulomb.units.info.ctx_unit_Bit")
println(s"s= ${symbolValueType(s).show}")
println(s"s= ${symbolValueType(s).isSingleton}")
println(s"s= ${s.flags.show}")
val ss = fqFieldSymbol("coulomb.units.info")
println(s"ss= ${symbolValueType(ss).show}")
println(s"ss= ${symbolValueType(ss).isSingleton}")
println(s"ss= ${ss.flags.show}")

val g = '{ given given_test: String = "foooooo" }
println(s"g= ${g.show}")

val f = t.asType match
case '[t] =>
'{
// hard-coding imports works
// so question is how to allow library users to inject these from above
import coulomb.policy.standard.given
(v: Double) => v.withUnit[t].toUnit[Meter]
}
f
Expr(typeReprAST(TypeRepr.of[U]))

def astTypeRepr(using Quotes)(
ast: UnitAST
Expand All @@ -207,7 +93,31 @@ object meta:
val ntr = astTypeRepr(n)
val dtr = astTypeRepr(d)
TypeRepr.of[coulomb.`/`].appliedTo(List(ntr, dtr))
case UnitAST.Pow(b, e) => astTypeRepr(b)
case UnitAST.Pow(b, e) =>
val btr = astTypeRepr(b)
val etr = rationalTE(e)
TypeRepr.of[coulomb.`^`].appliedTo(List(btr, etr))

def typeReprAST(using Quotes)(
tr: quotes.reflect.TypeRepr
): UnitAST =
import quotes.reflect.*
tr match
case AppliedType(op, List(lu, ru))
if (op =:= TypeRepr.of[coulomb.`*`]) =>
UnitAST.Mul(typeReprAST(lu), typeReprAST(ru))
case AppliedType(op, List(lu, ru))
if (op =:= TypeRepr.of[coulomb.`/`]) =>
UnitAST.Div(typeReprAST(lu), typeReprAST(ru))
case AppliedType(op, List(b, e))
if (op =:= TypeRepr.of[coulomb.`^`]) =>
val rationalTE(ev) = e: @unchecked
UnitAST.Pow(typeReprAST(b), ev)
case t =>
// should add checking for types with type-args here
// possibly an explicit non dealiasting policy here would allow
// parameterized types to be handled via typedef aliases?
UnitAST.UnitType(t.typeSymbol.fullName)

def symbolValueType(using Quotes)(
sym: quotes.reflect.Symbol
Expand Down Expand Up @@ -280,20 +190,3 @@ object meta:

def fqFieldSymbol(using Quotes)(path: String): quotes.reflect.Symbol =
fqFieldSymbol(path.split('.').toIndexedSeq)

def astunit[T](using Quotes, Type[T]): Expr[UnitAST.UnitType] =
import quotes.reflect.*
val tr = TypeRepr.of[T]
// filtering is a hack - these dollar sign variant symbols do not
// show up in my fqTypRepr navigation
val path = tr.dealias.typeSymbol.fullName.filter(_ != '$')
'{ UnitAST.UnitType(${ Expr(path) }) }

def fqtn[T](using Quotes, Type[T]): Expr[String] =
import quotes.reflect.*
val tr = TypeRepr.of[T]
Expr(tr.dealias.typeSymbol.fullName)

def m[T](using Quotes, Type[T]): Expr[Map[String, String]] =
val mm = Map("a" -> "b")
Expr(mm)

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