1 files changed, 0 insertions, 128 deletions
diff --git a/gcc-4.8.1/libgo/go/go/types/conversions.go b/gcc-4.8.1/libgo/go/go/types/conversions.go
deleted file mode 100644
index 65359f319..000000000
--- a/gcc-4.8.1/libgo/go/go/types/conversions.go
+++ /dev/null
@@ -1,128 +0,0 @@
-// Copyright 2012 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// This file implements typechecking of conversions.
-
-package types
-
-import (
-	"go/ast"
-)
-
-// conversion typechecks the type conversion conv to type typ. iota is the current
-// value of iota or -1 if iota doesn't have a value in the current context. The result
-// of the conversion is returned via x. If the conversion has type errors, the returned
-// x is marked as invalid (x.mode == invalid).
-//
-func (check *checker) conversion(x *operand, conv *ast.CallExpr, typ Type, iota int) {
-	// all conversions have one argument
-	if len(conv.Args) != 1 {
-		check.invalidOp(conv.Pos(), "%s conversion requires exactly one argument", conv)
-		goto Error
-	}
-
-	// evaluate argument
-	check.expr(x, conv.Args[0], nil, iota)
-	if x.mode == invalid {
-		goto Error
-	}
-
-	if x.mode == constant && isConstType(typ) {
-		// constant conversion
-		// TODO(gri) implement this
-	} else {
-		// non-constant conversion
-		if !x.isConvertible(typ) {
-			check.invalidOp(conv.Pos(), "cannot convert %s to %s", x, typ)
-			goto Error
-		}
-		x.mode = value
-	}
-
-	x.expr = conv
-	x.typ = typ
-	return
-
-Error:
-	x.mode = invalid
-}
-
-func (x *operand) isConvertible(T Type) bool {
-	// "x is assignable to T"
-	if x.isAssignable(T) {
-		return true
-	}
-
-	// "x's type and T have identical underlying types"
-	V := x.typ
-	Vu := underlying(V)
-	Tu := underlying(T)
-	if IsIdentical(Vu, Tu) {
-		return true
-	}
-
-	// "x's type and T are unnamed pointer types and their pointer base types have identical underlying types"
-	if V, ok := V.(*Pointer); ok {
-		if T, ok := T.(*Pointer); ok {
-			if IsIdentical(underlying(V.Base), underlying(T.Base)) {
-				return true
-			}
-		}
-	}
-
-	// "x's type and T are both integer or floating point types"
-	if (isInteger(V) || isFloat(V)) && (isInteger(T) || isFloat(T)) {
-		return true
-	}
-
-	// "x's type and T are both complex types"
-	if isComplex(V) && isComplex(T) {
-		return true
-	}
-
-	// "x is an integer or a slice of bytes or runes and T is a string type"
-	if (isInteger(V) || isBytesOrRunes(Vu)) && isString(T) {
-		return true
-	}
-
-	// "x is a string and T is a slice of bytes or runes"
-	if isString(V) && isBytesOrRunes(Tu) {
-		return true
-	}
-
-	// package unsafe:
-	// "any pointer or value of underlying type uintptr can be converted into a unsafe.Pointer"
-	if (isPointer(Vu) || isUintptr(Vu)) && isUnsafePointer(T) {
-		return true
-	}
-	// "and vice versa"
-	if isUnsafePointer(V) && (isPointer(Tu) || isUintptr(Tu)) {
-		return true
-	}
-
-	return false
-}
-
-func isUintptr(typ Type) bool {
-	t, ok := typ.(*Basic)
-	return ok && t.Kind == Uintptr
-}
-
-func isUnsafePointer(typ Type) bool {
-	t, ok := typ.(*Basic)
-	return ok && t.Kind == UnsafePointer
-}
-
-func isPointer(typ Type) bool {
-	_, ok := typ.(*Pointer)
-	return ok
-}
-
-func isBytesOrRunes(typ Type) bool {
-	if s, ok := typ.(*Slice); ok {
-		t, ok := underlying(s.Elt).(*Basic)
-		return ok && (t.Kind == Byte || t.Kind == Rune)
-	}
-	return false
-}