cmd/compile/internal/types2: rename TypeParams to TParamList

The 'TypeParams' name is too easily confused with the singular
'TypeParam', and does not say anything about what type of collection it
is. We decided that TTuple was not great. TParamList seems OK for now,
though perhaps a better name will emerge.

Change-Id: I5eabdc91b1f666bb4c7ea8acdbebf7c372d19227
Reviewed-on: https://go-review.googlesource.com/c/go/+/341861
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>

src/cmd/compile/internal/noder/writer.go

@@ -646,7 +646,7 @@ func (w *writer) objDict(obj types2.Object, dict *writerDict) {
 	assert(len(dict.funcs) == nfuncs)
 }
 
-func (w *writer) typeParamNames(tparams *types2.TypeParams) {
+func (w *writer) typeParamNames(tparams *types2.TParamList) {
 	w.sync(syncTypeParamNames)
 
 	ntparams := tparams.Len()
@@ -1861,7 +1861,7 @@ func fieldIndex(info *types2.Info, str *types2.Struct, key *syntax.Name) int {
 }
 
 // objTypeParams returns the type parameters on the given object.
-func objTypeParams(obj types2.Object) *types2.TypeParams {
+func objTypeParams(obj types2.Object) *types2.TParamList {
 	switch obj := obj.(type) {
 	case *types2.Func:
 		sig := obj.Type().(*types2.Signature)

src/cmd/compile/internal/types2/decl.go

@@ -581,7 +581,7 @@ func (check *Checker) typeDecl(obj *TypeName, tdecl *syntax.TypeDecl, def *Named
 	}
 }
 
-func (check *Checker) collectTypeParams(list []*syntax.Field) *TypeParams {
+func (check *Checker) collectTypeParams(list []*syntax.Field) *TParamList {
 	tparams := make([]*TypeName, len(list))
 
 	// Declare type parameters up-front.

src/cmd/compile/internal/types2/named.go

@@ -20,7 +20,7 @@ type Named struct {
 	fromRHS    Type        // type (on RHS of declaration) this *Named type is derived from (for cycle reporting)
 	underlying Type        // possibly a *Named during setup; never a *Named once set up completely
 	instance   *instance   // position information for lazy instantiation, or nil
-	tparams    *TypeParams // type parameters, or nil
+	tparams    *TParamList // type parameters, or nil
 	targs      []Type      // type arguments (after instantiation), or nil
 	methods    []*Func     // methods declared for this type (not the method set of this type); signatures are type-checked lazily
 
@@ -80,7 +80,7 @@ func (t *Named) load() *Named {
 }
 
 // newNamed is like NewNamed but with a *Checker receiver and additional orig argument.
-func (check *Checker) newNamed(obj *TypeName, orig *Named, underlying Type, tparams *TypeParams, methods []*Func) *Named {
+func (check *Checker) newNamed(obj *TypeName, orig *Named, underlying Type, tparams *TParamList, methods []*Func) *Named {
 	typ := &Named{check: check, obj: obj, orig: orig, fromRHS: underlying, underlying: underlying, tparams: tparams, methods: methods}
 	if typ.orig == nil {
 		typ.orig = typ
@@ -123,7 +123,7 @@ func (t *Named) Orig() *Named { return t.orig }
 
 // TParams returns the type parameters of the named type t, or nil.
 // The result is non-nil for an (originally) parameterized type even if it is instantiated.
-func (t *Named) TParams() *TypeParams { return t.load().tparams }
+func (t *Named) TParams() *TParamList { return t.load().tparams }
 
 // SetTParams sets the type parameters of the named type t.
 func (t *Named) SetTParams(tparams []*TypeName) { t.load().tparams = bindTParams(tparams) }

src/cmd/compile/internal/types2/signature.go

@@ -19,8 +19,8 @@ type Signature struct {
 	// and store it in the Func Object) because when type-checking a function
 	// literal we call the general type checker which returns a general Type.
 	// We then unpack the *Signature and use the scope for the literal body.
-	rparams  *TypeParams // receiver type parameters from left to right, or nil
-	tparams  *TypeParams // type parameters from left to right, or nil
+	rparams  *TParamList // receiver type parameters from left to right, or nil
+	tparams  *TParamList // type parameters from left to right, or nil
 	scope    *Scope      // function scope, present for package-local signatures
 	recv     *Var        // nil if not a method
 	params   *Tuple      // (incoming) parameters from left to right; or nil
@@ -54,13 +54,13 @@ func NewSignature(recv *Var, params, results *Tuple, variadic bool) *Signature {
 func (s *Signature) Recv() *Var { return s.recv }
 
 // TParams returns the type parameters of signature s, or nil.
-func (s *Signature) TParams() *TypeParams { return s.tparams }
+func (s *Signature) TParams() *TParamList { return s.tparams }
 
 // SetTParams sets the type parameters of signature s.
 func (s *Signature) SetTParams(tparams []*TypeName) { s.tparams = bindTParams(tparams) }
 
 // RParams returns the receiver type parameters of signature s, or nil.
-func (s *Signature) RParams() *TypeParams { return s.rparams }
+func (s *Signature) RParams() *TParamList { return s.rparams }
 
 // SetRParams sets the receiver type params of signature s.
 func (s *Signature) SetRParams(rparams []*TypeName) { s.rparams = bindTParams(rparams) }

src/cmd/compile/internal/types2/typeparam.go

@@ -83,28 +83,28 @@ func (t *TypeParam) SetConstraint(bound Type) {
 func (t *TypeParam) Underlying() Type { return t }
 func (t *TypeParam) String() string   { return TypeString(t, nil) }
 
-// TypeParams holds a list of type parameters bound to a type.
-type TypeParams struct{ tparams []*TypeName }
+// TParamList holds a list of type parameters bound to a type.
+type TParamList struct{ tparams []*TypeName }
 
 // Len returns the number of type parameters in the list.
 // It is safe to call on a nil receiver.
-func (tps *TypeParams) Len() int {
+func (tps *TParamList) Len() int {
 	return len(tps.list())
 }
 
 // At returns the i'th type parameter in the list.
-func (tps *TypeParams) At(i int) *TypeName {
+func (tps *TParamList) At(i int) *TypeName {
 	return tps.list()[i]
 }
 
-func (tps *TypeParams) list() []*TypeName {
+func (tps *TParamList) list() []*TypeName {
 	if tps == nil {
 		return nil
 	}
 	return tps.tparams
 }
 
-func bindTParams(list []*TypeName) *TypeParams {
+func bindTParams(list []*TypeName) *TParamList {
 	if len(list) == 0 {
 		return nil
 	}
@@ -115,7 +115,7 @@ func bindTParams(list []*TypeName) *TypeParams {
 		}
 		typ.index = i
 	}
-	return &TypeParams{tparams: list}
+	return &TParamList{tparams: list}
 }
 
 // ----------------------------------------------------------------------------