Use goreleaser to build and release (#244)

Instead of using gox on one side and an action to release, we can merge
them together with goreleaser which will build for extra targets (arm,
mips if needed in the future) and it also takes care of creating
checksums, a source archive, and a changelog and creating a release with
all the artifacts.

All binaries should respect the old naming convention, so any scripts
out there should still work.

Signed-off-by: Itxaka <igarcia@suse.com>

vendor/google.golang.org/protobuf/reflect/protoreflect/source.go

@@ -4,6 +4,10 @@
 
 package protoreflect
 
+import (
+	"strconv"
+)
+
 // SourceLocations is a list of source locations.
 type SourceLocations interface {
 	// Len reports the number of source locations in the proto file.
@@ -11,9 +15,20 @@ type SourceLocations interface {
 	// Get returns the ith SourceLocation. It panics if out of bounds.
 	Get(int) SourceLocation
 
-	doNotImplement
+	// ByPath returns the SourceLocation for the given path,
+	// returning the first location if multiple exist for the same path.
+	// If multiple locations exist for the same path,
+	// then SourceLocation.Next index can be used to identify the
+	// index of the next SourceLocation.
+	// If no location exists for this path, it returns the zero value.
+	ByPath(path SourcePath) SourceLocation
 
-	// TODO: Add ByPath and ByDescriptor helper methods.
+	// ByDescriptor returns the SourceLocation for the given descriptor,
+	// returning the first location if multiple exist for the same path.
+	// If no location exists for this descriptor, it returns the zero value.
+	ByDescriptor(desc Descriptor) SourceLocation
+
+	doNotImplement
 }
 
 // SourceLocation describes a source location and
@@ -39,6 +54,10 @@ type SourceLocation struct {
 	LeadingComments string
 	// TrailingComments is the trailing attached comment for the declaration.
 	TrailingComments string
+
+	// Next is an index into SourceLocations for the next source location that
+	// has the same Path. It is zero if there is no next location.
+	Next int
 }
 
 // SourcePath identifies part of a file descriptor for a source location.
@@ -48,5 +67,62 @@ type SourceLocation struct {
 // See google.protobuf.SourceCodeInfo.Location.path.
 type SourcePath []int32
 
-// TODO: Add SourcePath.String method to pretty-print the path. For example:
-//	".message_type[6].nested_type[15].field[3]"
+// Equal reports whether p1 equals p2.
+func (p1 SourcePath) Equal(p2 SourcePath) bool {
+	if len(p1) != len(p2) {
+		return false
+	}
+	for i := range p1 {
+		if p1[i] != p2[i] {
+			return false
+		}
+	}
+	return true
+}
+
+// String formats the path in a humanly readable manner.
+// The output is guaranteed to be deterministic,
+// making it suitable for use as a key into a Go map.
+// It is not guaranteed to be stable as the exact output could change
+// in a future version of this module.
+//
+// Example output:
+//	.message_type[6].nested_type[15].field[3]
+func (p SourcePath) String() string {
+	b := p.appendFileDescriptorProto(nil)
+	for _, i := range p {
+		b = append(b, '.')
+		b = strconv.AppendInt(b, int64(i), 10)
+	}
+	return string(b)
+}
+
+type appendFunc func(*SourcePath, []byte) []byte
+
+func (p *SourcePath) appendSingularField(b []byte, name string, f appendFunc) []byte {
+	if len(*p) == 0 {
+		return b
+	}
+	b = append(b, '.')
+	b = append(b, name...)
+	*p = (*p)[1:]
+	if f != nil {
+		b = f(p, b)
+	}
+	return b
+}
+
+func (p *SourcePath) appendRepeatedField(b []byte, name string, f appendFunc) []byte {
+	b = p.appendSingularField(b, name, nil)
+	if len(*p) == 0 || (*p)[0] < 0 {
+		return b
+	}
+	b = append(b, '[')
+	b = strconv.AppendUint(b, uint64((*p)[0]), 10)
+	b = append(b, ']')
+	*p = (*p)[1:]
+	if f != nil {
+		b = f(p, b)
+	}
+	return b
+}