(TFECO-7942) builtin refs from tf schema (#1854)

* source version specific built-in references from terraform-schema

* add changie entry

.changes/unreleased/ENHANCEMENTS-20241029-161707.yaml

@@ -0,0 +1,6 @@
+kind: ENHANCEMENTS
+body: Support terraform.applying built-in reference starting at TF 1.10
+time: 2024-10-29T16:17:07.267245+01:00
+custom:
+    Issue: "1854"
+    Repository: terraform-ls

internal/features/modules/decoder/module_context.go

@@ -43,6 +43,9 @@ func modulePathContext(mod *state.ModuleRecord, stateReader CombinedReader) (*de
 		}
 	}
 
+	// append Terraform version specific path targets that are available in all modules (builtin references)
+	pathCtx.ReferenceTargets = append(pathCtx.ReferenceTargets, referencesForModule(mod, stateReader)...)
+
 	for name, f := range mod.ParsedModuleFiles {
 		pathCtx.Files[name.String()] = f
 	}

internal/features/modules/decoder/references.go

@@ -0,0 +1,17 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
+package decoder
+
+import (
+	"github.com/hashicorp/hcl-lang/reference"
+	"github.com/hashicorp/terraform-ls/internal/features/modules/state"
+	tfschema "github.com/hashicorp/terraform-schema/schema"
+)
+
+func referencesForModule(mod *state.ModuleRecord, stateReader CombinedReader) reference.Targets {
+	modPath := mod.Path()
+	resolvedVersion := tfschema.ResolveVersion(stateReader.TerraformVersion(modPath), mod.Meta.CoreRequirements)
+
+	return tfschema.BuiltinReferencesForVersion(resolvedVersion, modPath)
+}

internal/features/modules/jobs/references.go

@@ -58,8 +58,6 @@ func DecodeReferenceTargets(ctx context.Context, modStore *state.ModuleStore, ro
 	}
 	targets, rErr := pd.CollectReferenceTargets()
 
-	targets = append(targets, builtinReferences(modPath)...)
-
 	sErr := modStore.UpdateReferenceTargets(modPath, targets, rErr)
 	if sErr != nil {
 		return sErr