feat: add file parameter to UnmarshalWithOrigin

Pass source file path to yaml3 decoder so origin locations include
the file they were parsed from.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: reuvenharrison

go.mod

@@ -2,4 +2,4 @@ module github.com/oasdiff/yaml
 
 go 1.22.5
 
-require github.com/oasdiff/yaml3 v0.0.0-20250309153720-d2182401db90
+require github.com/oasdiff/yaml3 v0.0.0-20260217201013-8a620da6102a

go.sum

@@ -1,4 +1,4 @@
-github.com/oasdiff/yaml3 v0.0.0-20250309153720-d2182401db90 h1:bQx3WeLcUWy+RletIKwUIt4x3t8n2SxavmoclizMb8c=
-github.com/oasdiff/yaml3 v0.0.0-20250309153720-d2182401db90/go.mod h1:y5+oSEHCPT/DGrS++Wc/479ERge0zTFxaF8PbGKcg2o=
+github.com/oasdiff/yaml3 v0.0.0-20260217201013-8a620da6102a h1:so9gdCU1AyG+EFCCp6ORLut4MBi/wIh4J3jGrEjNZnI=
+github.com/oasdiff/yaml3 v0.0.0-20260217201013-8a620da6102a/go.mod h1:y5+oSEHCPT/DGrS++Wc/479ERge0zTFxaF8PbGKcg2o=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=

yaml.go

@@ -16,7 +16,7 @@ import (
 	"reflect"
 	"strconv"
 
-	"github.com/oasdiff/yaml3"
+	yaml "github.com/oasdiff/yaml3"
 )
 
 // Marshal the object into JSON then converts JSON to YAML and returns the
@@ -44,14 +44,14 @@ type YAMLOpt func(*yaml.Decoder) *yaml.Decoder
 // Unmarshal converts YAML to JSON then uses JSON to unmarshal into an object,
 // optionally configuring the behavior of the JSON unmarshal.
 func Unmarshal(y []byte, o interface{}, opts ...JSONOpt) error {
-	return UnmarshalWithOrigin(y, o, false, opts...)
+	return UnmarshalWithOrigin(y, o, false, "", opts...)
 }
 
 // UnmarshalWithOrigin is like Unmarshal but if withOrigin is true, it will
 // include the origin information in the output.
-func UnmarshalWithOrigin(y []byte, o interface{}, withOrigin bool, opts ...JSONOpt) error {
+func UnmarshalWithOrigin(y []byte, o interface{}, withOrigin bool, file string, opts ...JSONOpt) error {
 	dec := yaml.NewDecoder(bytes.NewReader(y))
-	dec.Origin(withOrigin)
+	dec.Origin(withOrigin, file)
 	return unmarshal(dec, o, opts)
 }