refactor ExprKind to use new PointerCast enum
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6321a323cc
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@ -7,7 +7,6 @@ use crate::hir::def::Namespace;
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use crate::mir::ProjectionKind;
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use crate::mir::interpret::ConstValue;
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use crate::ty::{self, Lift, Ty, TyCtxt, ConstVid};
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use crate::ty::adjustment::{PointerCast};
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use crate::ty::fold::{TypeFoldable, TypeFolder, TypeVisitor};
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use crate::ty::print::{FmtPrinter, Printer};
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use rustc_data_structures::indexed_vec::{IndexVec, Idx};
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@ -327,6 +326,7 @@ CloneTypeFoldableAndLiftImpls! {
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crate::ty::IntVarValue,
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crate::ty::ParamConst,
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crate::ty::ParamTy,
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crate::ty::adjustment::PointerCast,
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crate::ty::RegionVid,
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crate::ty::UniverseIndex,
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crate::ty::Variance,
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@ -627,16 +627,8 @@ impl<'a, 'tcx> Lift<'tcx> for ty::adjustment::Adjust<'a> {
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match *self {
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ty::adjustment::Adjust::NeverToAny =>
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Some(ty::adjustment::Adjust::NeverToAny),
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ty::adjustment::Adjust::Pointer(PointerCast::ReifyFnPointer) =>
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Some(ty::adjustment::Adjust::Pointer(PointerCast::ReifyFnPointer)),
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ty::adjustment::Adjust::Pointer(PointerCast::UnsafeFnPointer) =>
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Some(ty::adjustment::Adjust::Pointer(PointerCast::UnsafeFnPointer)),
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ty::adjustment::Adjust::Pointer(PointerCast::ClosureFnPointer(unsafety)) =>
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Some(ty::adjustment::Adjust::Pointer(PointerCast::ClosureFnPointer(unsafety))),
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ty::adjustment::Adjust::Pointer(PointerCast::MutToConstPointer) =>
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Some(ty::adjustment::Adjust::Pointer(PointerCast::MutToConstPointer)),
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ty::adjustment::Adjust::Pointer(PointerCast::Unsize) =>
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Some(ty::adjustment::Adjust::Pointer(PointerCast::Unsize)),
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ty::adjustment::Adjust::Pointer(ptr) =>
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Some(ty::adjustment::Adjust::Pointer(ptr)),
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ty::adjustment::Adjust::Deref(ref overloaded) => {
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tcx.lift(overloaded).map(ty::adjustment::Adjust::Deref)
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}
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@ -1192,16 +1184,6 @@ EnumTypeFoldableImpl! {
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}
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}
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EnumTypeFoldableImpl! {
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impl<'tcx> TypeFoldable<'tcx> for ty::adjustment::PointerCast {
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(ty::adjustment::PointerCast::ReifyFnPointer),
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(ty::adjustment::PointerCast::UnsafeFnPointer),
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(ty::adjustment::PointerCast::ClosureFnPointer)(a),
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(ty::adjustment::PointerCast::MutToConstPointer),
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(ty::adjustment::PointerCast::Unsize),
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}
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}
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BraceStructTypeFoldableImpl! {
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impl<'tcx> TypeFoldable<'tcx> for ty::adjustment::OverloadedDeref<'tcx> {
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region, mutbl,
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@ -193,11 +193,7 @@ impl<'a, 'gcx, 'tcx> Builder<'a, 'gcx, 'tcx> {
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| ExprKind::Cast { .. }
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| ExprKind::Use { .. }
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| ExprKind::NeverToAny { .. }
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| ExprKind::ReifyFnPointer { .. }
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| ExprKind::ClosureFnPointer { .. }
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| ExprKind::UnsafeFnPointer { .. }
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| ExprKind::MutToConstPointer { .. }
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| ExprKind::Unsize { .. }
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| ExprKind::Pointer { .. }
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| ExprKind::Repeat { .. }
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| ExprKind::Borrow { .. }
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| ExprKind::If { .. }
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@ -10,7 +10,6 @@ use rustc::middle::region;
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use rustc::mir::interpret::InterpError;
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use rustc::mir::*;
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use rustc::ty::{self, CanonicalUserTypeAnnotation, Ty, UpvarSubsts};
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use rustc::ty::adjustment::{PointerCast};
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use syntax_pos::Span;
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impl<'a, 'gcx, 'tcx> Builder<'a, 'gcx, 'tcx> {
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@ -155,35 +154,9 @@ impl<'a, 'gcx, 'tcx> Builder<'a, 'gcx, 'tcx> {
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let source = unpack!(block = this.as_operand(block, scope, source));
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block.and(Rvalue::Use(source))
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}
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ExprKind::ReifyFnPointer { source } => {
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ExprKind::Pointer { cast, source } => {
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let source = unpack!(block = this.as_operand(block, scope, source));
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block.and(Rvalue::Cast(
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CastKind::Pointer(PointerCast::ReifyFnPointer), source, expr.ty)
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)
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}
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ExprKind::UnsafeFnPointer { source } => {
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let source = unpack!(block = this.as_operand(block, scope, source));
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block.and(Rvalue::Cast(
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CastKind::Pointer(PointerCast::UnsafeFnPointer), source, expr.ty)
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)
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}
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ExprKind::ClosureFnPointer { source, unsafety } => {
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let source = unpack!(block = this.as_operand(block, scope, source));
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block.and(Rvalue::Cast(
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CastKind::Pointer(PointerCast::ClosureFnPointer(unsafety)), source, expr.ty)
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)
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}
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ExprKind::MutToConstPointer { source } => {
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let source = unpack!(block = this.as_operand(block, scope, source));
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block.and(Rvalue::Cast(
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CastKind::Pointer(PointerCast::MutToConstPointer), source, expr.ty)
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)
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}
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ExprKind::Unsize { source } => {
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let source = unpack!(block = this.as_operand(block, scope, source));
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block.and(Rvalue::Cast(
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CastKind::Pointer(PointerCast::Unsize), source, expr.ty)
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)
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block.and(Rvalue::Cast(CastKind::Pointer(cast), source, expr.ty))
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}
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ExprKind::Array { fields } => {
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// (*) We would (maybe) be closer to codegen if we
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@ -59,11 +59,7 @@ impl Category {
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| ExprKind::Box { .. }
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| ExprKind::Cast { .. }
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| ExprKind::Use { .. }
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| ExprKind::ReifyFnPointer { .. }
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| ExprKind::ClosureFnPointer { .. }
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| ExprKind::UnsafeFnPointer { .. }
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| ExprKind::MutToConstPointer { .. }
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| ExprKind::Unsize { .. }
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| ExprKind::Pointer { .. }
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| ExprKind::Repeat { .. }
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| ExprKind::Borrow { .. }
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| ExprKind::Assign { .. }
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@ -380,11 +380,7 @@ impl<'a, 'gcx, 'tcx> Builder<'a, 'gcx, 'tcx> {
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| ExprKind::Box { .. }
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| ExprKind::Cast { .. }
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| ExprKind::Use { .. }
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| ExprKind::ReifyFnPointer { .. }
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| ExprKind::ClosureFnPointer { .. }
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| ExprKind::UnsafeFnPointer { .. }
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| ExprKind::MutToConstPointer { .. }
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| ExprKind::Unsize { .. }
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| ExprKind::Pointer { .. }
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| ExprKind::Repeat { .. }
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| ExprKind::Borrow { .. }
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| ExprKind::Array { .. }
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@ -75,21 +75,21 @@ fn apply_adjustment<'a, 'gcx, 'tcx>(cx: &mut Cx<'a, 'gcx, 'tcx>,
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-> Expr<'tcx> {
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let Expr { temp_lifetime, mut span, .. } = expr;
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let kind = match adjustment.kind {
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Adjust::Pointer(PointerCast::ReifyFnPointer) => {
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ExprKind::ReifyFnPointer { source: expr.to_ref() }
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Adjust::Pointer(PointerCast::Unsize) => {
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if let ExprKind::Block { body } = expr.kind {
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if let Some(ref last_expr) = body.expr {
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span = last_expr.span;
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expr.span = span;
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}
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}
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ExprKind::Pointer { cast: PointerCast::Unsize, source: expr.to_ref() }
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}
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Adjust::Pointer(PointerCast::UnsafeFnPointer) => {
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ExprKind::UnsafeFnPointer { source: expr.to_ref() }
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}
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Adjust::Pointer(PointerCast::ClosureFnPointer(unsafety)) => {
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ExprKind::ClosureFnPointer { source: expr.to_ref(), unsafety }
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Adjust::Pointer(cast) => {
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ExprKind::Pointer { cast, source: expr.to_ref() }
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}
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Adjust::NeverToAny => {
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ExprKind::NeverToAny { source: expr.to_ref() }
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}
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Adjust::Pointer(PointerCast::MutToConstPointer) => {
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ExprKind::MutToConstPointer { source: expr.to_ref() }
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}
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Adjust::Deref(None) => {
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// Adjust the span from the block, to the last expression of the
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// block. This is a better span when returning a mutable reference
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@ -187,16 +187,6 @@ fn apply_adjustment<'a, 'gcx, 'tcx>(cx: &mut Cx<'a, 'gcx, 'tcx>,
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// since they get rid of a borrow implicitly.
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ExprKind::Use { source: cast_expr.to_ref() }
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}
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Adjust::Pointer(PointerCast::Unsize) => {
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// See the above comment for Adjust::Deref
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if let ExprKind::Block { body } = expr.kind {
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if let Some(ref last_expr) = body.expr {
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span = last_expr.span;
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expr.span = span;
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}
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}
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ExprKind::Unsize { source: expr.to_ref() }
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}
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};
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Expr {
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@ -10,6 +10,7 @@ use rustc::infer::canonical::Canonical;
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use rustc::middle::region;
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use rustc::ty::subst::SubstsRef;
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use rustc::ty::{AdtDef, UpvarSubsts, Ty, Const, UserType};
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use rustc::ty::adjustment::{PointerCast};
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use rustc::ty::layout::VariantIdx;
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use rustc::hir;
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use syntax_pos::Span;
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@ -180,20 +181,8 @@ pub enum ExprKind<'tcx> {
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NeverToAny {
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source: ExprRef<'tcx>,
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},
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ReifyFnPointer {
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source: ExprRef<'tcx>,
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},
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ClosureFnPointer {
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source: ExprRef<'tcx>,
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unsafety: hir::Unsafety,
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},
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UnsafeFnPointer {
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source: ExprRef<'tcx>,
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},
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MutToConstPointer {
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source: ExprRef<'tcx>,
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},
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Unsize {
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Pointer {
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cast: PointerCast,
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source: ExprRef<'tcx>,
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},
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If {
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