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Rustfmt

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This commit is contained in:
Oliver Schneider
2017-08-09 09:30:56 +02:00
parent 705c6ec2a4
commit b25b6b3355
95 changed files with 3090 additions and 2022 deletions
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59
clippy_lints/src/utils/hir_utils.rs
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@@ -7,14 +7,17 @@ use syntax::ast::Name;
use syntax::ptr::P;
use utils::differing_macro_contexts;
/// Type used to check whether two ast are the same. This is different from the operator
/// `==` on ast types as this operator would compare true equality with ID and span.
/// Type used to check whether two ast are the same. This is different from the
/// operator
/// `==` on ast types as this operator would compare true equality with ID and
/// span.
///
/// Note that some expressions kinds are not considered but could be added.
pub struct SpanlessEq<'a, 'tcx: 'a> {
/// Context used to evaluate constant expressions.
cx: &'a LateContext<'a, 'tcx>,
/// If is true, never consider as equal expressions containing function calls.
/// If is true, never consider as equal expressions containing function
/// calls.
ignore_fn: bool,
}
@@ -52,7 +55,7 @@ impl<'a, 'tcx: 'a> SpanlessEq<'a, 'tcx> {
/// Check whether two blocks are the same.
pub fn eq_block(&self, left: &Block, right: &Block) -> bool {
over(&left.stmts, &right.stmts, |l, r| self.eq_stmt(l, r)) &&
both(&left.expr, &right.expr, |l, r| self.eq_expr(l, r))
both(&left.expr, &right.expr, |l, r| self.eq_expr(l, r))
}
pub fn eq_expr(&self, left: &Expr, right: &Expr) -> bool {
@@ -78,13 +81,13 @@ impl<'a, 'tcx: 'a> SpanlessEq<'a, 'tcx> {
(&ExprBlock(ref l), &ExprBlock(ref r)) => self.eq_block(l, r),
(&ExprBinary(l_op, ref ll, ref lr), &ExprBinary(r_op, ref rl, ref rr)) => {
l_op.node == r_op.node && self.eq_expr(ll, rl) && self.eq_expr(lr, rr) ||
swap_binop(l_op.node, ll, lr).map_or(false, |(l_op, ll, lr)| {
l_op == r_op.node && self.eq_expr(ll, rl) && self.eq_expr(lr, rr)
})
swap_binop(l_op.node, ll, lr).map_or(false, |(l_op, ll, lr)| {
l_op == r_op.node && self.eq_expr(ll, rl) && self.eq_expr(lr, rr)
})
},
(&ExprBreak(li, ref le), &ExprBreak(ri, ref re)) => {
both(&li.ident, &ri.ident, |l, r| l.node.name.as_str() == r.node.name.as_str()) &&
both(le, re, |l, r| self.eq_expr(l, r))
both(le, re, |l, r| self.eq_expr(l, r))
},
(&ExprBox(ref l), &ExprBox(ref r)) => self.eq_expr(l, r),
(&ExprCall(ref l_fun, ref l_args), &ExprCall(ref r_fun, ref r_args)) => {
@@ -105,23 +108,23 @@ impl<'a, 'tcx: 'a> SpanlessEq<'a, 'tcx> {
},
(&ExprMatch(ref le, ref la, ref ls), &ExprMatch(ref re, ref ra, ref rs)) => {
ls == rs && self.eq_expr(le, re) &&
over(la, ra, |l, r| {
self.eq_expr(&l.body, &r.body) && both(&l.guard, &r.guard, |l, r| self.eq_expr(l, r)) &&
over(&l.pats, &r.pats, |l, r| self.eq_pat(l, r))
})
over(la, ra, |l, r| {
self.eq_expr(&l.body, &r.body) && both(&l.guard, &r.guard, |l, r| self.eq_expr(l, r)) &&
over(&l.pats, &r.pats, |l, r| self.eq_pat(l, r))
})
},
(&ExprMethodCall(ref l_path, _, ref l_args), &ExprMethodCall(ref r_path, _, ref r_args)) => {
!self.ignore_fn && l_path == r_path && self.eq_exprs(l_args, r_args)
},
(&ExprRepeat(ref le, ll_id), &ExprRepeat(ref re, rl_id)) => {
self.eq_expr(le, re) &&
self.eq_expr(&self.cx.tcx.hir.body(ll_id).value, &self.cx.tcx.hir.body(rl_id).value)
self.eq_expr(&self.cx.tcx.hir.body(ll_id).value, &self.cx.tcx.hir.body(rl_id).value)
},
(&ExprRet(ref l), &ExprRet(ref r)) => both(l, r, |l, r| self.eq_expr(l, r)),
(&ExprPath(ref l), &ExprPath(ref r)) => self.eq_qpath(l, r),
(&ExprStruct(ref l_path, ref lf, ref lo), &ExprStruct(ref r_path, ref rf, ref ro)) => {
self.eq_qpath(l_path, r_path) && both(lo, ro, |l, r| self.eq_expr(l, r)) &&
over(lf, rf, |l, r| self.eq_field(l, r))
over(lf, rf, |l, r| self.eq_field(l, r))
},
(&ExprTup(ref l_tup), &ExprTup(ref r_tup)) => self.eq_exprs(l_tup, r_tup),
(&ExprTupField(ref le, li), &ExprTupField(ref re, ri)) => li.node == ri.node && self.eq_expr(le, re),
@@ -167,7 +170,7 @@ impl<'a, 'tcx: 'a> SpanlessEq<'a, 'tcx> {
(&PatKind::Ref(ref le, ref lm), &PatKind::Ref(ref re, ref rm)) => lm == rm && self.eq_pat(le, re),
(&PatKind::Slice(ref ls, ref li, ref le), &PatKind::Slice(ref rs, ref ri, ref re)) => {
over(ls, rs, |l, r| self.eq_pat(l, r)) && over(le, re, |l, r| self.eq_pat(l, r)) &&
both(li, ri, |l, r| self.eq_pat(l, r))
both(li, ri, |l, r| self.eq_pat(l, r))
},
(&PatKind::Wild, &PatKind::Wild) => true,
_ => false,
@@ -188,19 +191,19 @@ impl<'a, 'tcx: 'a> SpanlessEq<'a, 'tcx> {
fn eq_path(&self, left: &Path, right: &Path) -> bool {
left.is_global() == right.is_global() &&
over(&left.segments, &right.segments, |l, r| self.eq_path_segment(l, r))
over(&left.segments, &right.segments, |l, r| self.eq_path_segment(l, r))
}
fn eq_path_parameters(&self, left: &PathParameters, right: &PathParameters) -> bool {
match (left, right) {
(&AngleBracketedParameters(ref left), &AngleBracketedParameters(ref right)) => {
over(&left.lifetimes, &right.lifetimes, |l, r| self.eq_lifetime(l, r)) &&
over(&left.types, &right.types, |l, r| self.eq_ty(l, r)) &&
over(&left.bindings, &right.bindings, |l, r| self.eq_type_binding(l, r))
over(&left.types, &right.types, |l, r| self.eq_ty(l, r)) &&
over(&left.bindings, &right.bindings, |l, r| self.eq_type_binding(l, r))
},
(&ParenthesizedParameters(ref left), &ParenthesizedParameters(ref right)) => {
over(&left.inputs, &right.inputs, |l, r| self.eq_ty(l, r)) &&
both(&left.output, &right.output, |l, r| self.eq_ty(l, r))
both(&left.output, &right.output, |l, r| self.eq_ty(l, r))
},
(&AngleBracketedParameters(_), &ParenthesizedParameters(_)) |
(&ParenthesizedParameters(_), &AngleBracketedParameters(_)) => false,
@@ -218,7 +221,7 @@ impl<'a, 'tcx: 'a> SpanlessEq<'a, 'tcx> {
(&TySlice(ref l_vec), &TySlice(ref r_vec)) => self.eq_ty(l_vec, r_vec),
(&TyArray(ref lt, ll_id), &TyArray(ref rt, rl_id)) => {
self.eq_ty(lt, rt) &&
self.eq_expr(&self.cx.tcx.hir.body(ll_id).value, &self.cx.tcx.hir.body(rl_id).value)
self.eq_expr(&self.cx.tcx.hir.body(ll_id).value, &self.cx.tcx.hir.body(rl_id).value)
},
(&TyPtr(ref l_mut), &TyPtr(ref r_mut)) => l_mut.mutbl == r_mut.mutbl && self.eq_ty(&*l_mut.ty, &*r_mut.ty),
(&TyRptr(_, ref l_rmut), &TyRptr(_, ref r_rmut)) => {
@@ -247,22 +250,28 @@ fn swap_binop<'a>(binop: BinOp_, lhs: &'a Expr, rhs: &'a Expr) -> Option<(BinOp_
}
}
/// Check if the two `Option`s are both `None` or some equal values as per `eq_fn`.
/// Check if the two `Option`s are both `None` or some equal values as per
/// `eq_fn`.
fn both<X, F>(l: &Option<X>, r: &Option<X>, mut eq_fn: F) -> bool
where F: FnMut(&X, &X) -> bool
where
F: FnMut(&X, &X) -> bool,
{
l.as_ref().map_or_else(|| r.is_none(), |x| r.as_ref().map_or(false, |y| eq_fn(x, y)))
l.as_ref().map_or_else(|| r.is_none(), |x| {
r.as_ref().map_or(false, |y| eq_fn(x, y))
})
}
/// Check if two slices are equal as per `eq_fn`.
fn over<X, F>(left: &[X], right: &[X], mut eq_fn: F) -> bool
where F: FnMut(&X, &X) -> bool
where
F: FnMut(&X, &X) -> bool,
{
left.len() == right.len() && left.iter().zip(right).all(|(x, y)| eq_fn(x, y))
}
/// Type used to hash an ast element. This is different from the `Hash` trait on ast types as this
/// Type used to hash an ast element. This is different from the `Hash` trait
/// on ast types as this
/// trait would consider IDs and spans.
///
/// All expressions kind are hashed, but some might have a weaker hash.