fix: recognize references in common nested expressions (#596)

go.mod

@@ -12,12 +12,12 @@ require (
  github.com/hashicorp/go-memdb v1.3.2
  github.com/hashicorp/go-multierror v1.1.1
  github.com/hashicorp/go-version v1.3.0
- github.com/hashicorp/hcl-lang v0.0.0-20210728150846-565e9ca96f5a
+ github.com/hashicorp/hcl-lang v0.0.0-20210730145509-f403a86a1605
  github.com/hashicorp/hcl/v2 v2.10.1
  github.com/hashicorp/terraform-exec v0.14.0
  github.com/hashicorp/terraform-json v0.12.0
  github.com/hashicorp/terraform-registry-address v0.0.0-20210412075316-9b2996cce896
- github.com/hashicorp/terraform-schema v0.0.0-20210728151552-ade5695c845a
+ github.com/hashicorp/terraform-schema v0.0.0-20210730150127-e9a4cde5d2a6
  github.com/kylelemons/godebug v1.1.0 // indirect
  github.com/mh-cbon/go-fmt-fail v0.0.0-20160815164508-67765b3fbcb5
  github.com/mitchellh/cli v1.1.2

go.sum

@@ -190,8 +190,8 @@ github.com/hashicorp/golang-lru v0.5.4 h1:YDjusn29QI/Das2iO9M0BHnIbxPeyuCHsjMW+l
 github.com/hashicorp/golang-lru v0.5.4/go.mod h1:iADmTwqILo4mZ8BN3D2Q6+9jd8WM5uGBxy+E8yxSoD4=
 github.com/hashicorp/hcl v1.0.0 h1:0Anlzjpi4vEasTeNFn2mLJgTSwt0+6sfsiTG8qcWGx4=
 github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
-github.com/hashicorp/hcl-lang v0.0.0-20210728150846-565e9ca96f5a h1:/4iJtfKKXrHCi99FQgUeHvF6OBNUzJeVO7Tsmfj8F1s=
-github.com/hashicorp/hcl-lang v0.0.0-20210728150846-565e9ca96f5a/go.mod h1:xzXU6Fn+TWVaZUFxV8CyAsObi2oMgSEFAmLvCx2ArzM=
+github.com/hashicorp/hcl-lang v0.0.0-20210730145509-f403a86a1605 h1:558O3NRU7baTVlQNgui1NeHDORRFEgTsICpHmI+ubA0=
+github.com/hashicorp/hcl-lang v0.0.0-20210730145509-f403a86a1605/go.mod h1:xzXU6Fn+TWVaZUFxV8CyAsObi2oMgSEFAmLvCx2ArzM=
 github.com/hashicorp/hcl/v2 v2.10.1 h1:h4Xx4fsrRE26ohAk/1iGF/JBqRQbyUqu5Lvj60U54ys=
 github.com/hashicorp/hcl/v2 v2.10.1/go.mod h1:FwWsfWEjyV/CMj8s/gqAuiviY72rJ1/oayI9WftqcKg=
 github.com/hashicorp/logutils v1.0.0/go.mod h1:QIAnNjmIWmVIIkWDTG1z5v++HQmx9WQRO+LraFDTW64=
@@ -204,8 +204,8 @@ github.com/hashicorp/terraform-json v0.12.0 h1:8czPgEEWWPROStjkWPUnTQDXmpmZPlkQA
 github.com/hashicorp/terraform-json v0.12.0/go.mod h1:pmbq9o4EuL43db5+0ogX10Yofv1nozM+wskr/bGFJpI=
 github.com/hashicorp/terraform-registry-address v0.0.0-20210412075316-9b2996cce896 h1:1FGtlkJw87UsTMg5s8jrekrHmUPUJaMcu6ELiVhQrNw=
 github.com/hashicorp/terraform-registry-address v0.0.0-20210412075316-9b2996cce896/go.mod h1:bzBPnUIkI0RxauU8Dqo+2KrZZ28Cf48s8V6IHt3p4co=
-github.com/hashicorp/terraform-schema v0.0.0-20210728151552-ade5695c845a h1:IZ1T0OvyLXM5+VYaMYhOrbCb8qS2ASoDlPfsbx8c64M=
-github.com/hashicorp/terraform-schema v0.0.0-20210728151552-ade5695c845a/go.mod h1:laZKK46fUcgutOVcEOx7lY0POxOEFxLZCD+eaUvGIc8=
+github.com/hashicorp/terraform-schema v0.0.0-20210730150127-e9a4cde5d2a6 h1:NGjNSbYdtgqvkwfD49PRrO/b8uKI8HOXNtqi0i0kolA=
+github.com/hashicorp/terraform-schema v0.0.0-20210730150127-e9a4cde5d2a6/go.mod h1:gkASkhoBSC/CHyqPW0Di8ZPEB9/OVGe7yGecFsOWYQc=
 github.com/hashicorp/terraform-svchost v0.0.0-20200729002733-f050f53b9734 h1:HKLsbzeOsfXmKNpr3GiT18XAblV0BjCbzL8KQAMZGa0=
 github.com/hashicorp/terraform-svchost v0.0.0-20200729002733-f050f53b9734/go.mod h1:kNDNcF7sN4DocDLBkQYz73HGKwN1ANB1blq4lIYLYvg=
 github.com/huandu/xstrings v1.3.2 h1:L18LIDzqlW6xN2rEkpdV8+oL/IXWJ1APd+vsdYy4Wdw=