Upgrade to 0.12

14 files changed, 1589 insertions, 0 deletions

diff --git a/vendor/github.com/hashicorp/terraform-config-inspect/LICENSE b/vendor/github.com/hashicorp/terraform-config-inspect/LICENSE
new file mode 100644
index 0000000..82b4de9
--- /dev/null
+++ b/vendor/github.com/hashicorp/terraform-config-inspect/LICENSE
@@ -0,0 +1,353 @@
+Mozilla Public License, version 2.0
+
+1. Definitions
+
+1.1. “Contributor”
+
+     means each individual or legal entity that creates, contributes to the
+     creation of, or owns Covered Software.
+
+1.2. “Contributor Version”
+
+     means the combination of the Contributions of others (if any) used by a
+     Contributor and that particular Contributor’s Contribution.
+
+1.3. “Contribution”
+
+     means Covered Software of a particular Contributor.
+
+1.4. “Covered Software”
+
+     means Source Code Form to which the initial Contributor has attached the
+     notice in Exhibit A, the Executable Form of such Source Code Form, and
+     Modifications of such Source Code Form, in each case including portions
+     thereof.
+
+1.5. “Incompatible With Secondary Licenses”
+     means
+
+     a. that the initial Contributor has attached the notice described in
+        Exhibit B to the Covered Software; or
+
+     b. that the Covered Software was made available under the terms of version
+        1.1 or earlier of the License, but not also under the terms of a
+        Secondary License.
+
+1.6. “Executable Form”
+
+     means any form of the work other than Source Code Form.
+
+1.7. “Larger Work”
+
+     means a work that combines Covered Software with other material, in a separate
+     file or files, that is not Covered Software.
+
+1.8. “License”
+
+     means this document.
+
+1.9. “Licensable”
+
+     means having the right to grant, to the maximum extent possible, whether at the
+     time of the initial grant or subsequently, any and all of the rights conveyed by
+     this License.
+
+1.10. “Modifications”
+
+     means any of the following:
+
+     a. any file in Source Code Form that results from an addition to, deletion
+        from, or modification of the contents of Covered Software; or
+
+     b. any new file in Source Code Form that contains any Covered Software.
+
+1.11. “Patent Claims” of a Contributor
+
+      means any patent claim(s), including without limitation, method, process,
+      and apparatus claims, in any patent Licensable by such Contributor that
+      would be infringed, but for the grant of the License, by the making,
+      using, selling, offering for sale, having made, import, or transfer of
+      either its Contributions or its Contributor Version.
+
+1.12. “Secondary License”
+
+      means either the GNU General Public License, Version 2.0, the GNU Lesser
+      General Public License, Version 2.1, the GNU Affero General Public
+      License, Version 3.0, or any later versions of those licenses.
+
+1.13. “Source Code Form”
+
+      means the form of the work preferred for making modifications.
+
+1.14. “You” (or “Your”)
+
+      means an individual or a legal entity exercising rights under this
+      License. For legal entities, “You” includes any entity that controls, is
+      controlled by, or is under common control with You. For purposes of this
+      definition, “control” means (a) the power, direct or indirect, to cause
+      the direction or management of such entity, whether by contract or
+      otherwise, or (b) ownership of more than fifty percent (50%) of the
+      outstanding shares or beneficial ownership of such entity.
+
+
+2. License Grants and Conditions
+
+2.1. Grants
+
+     Each Contributor hereby grants You a world-wide, royalty-free,
+     non-exclusive license:
+
+     a. under intellectual property rights (other than patent or trademark)
+        Licensable by such Contributor to use, reproduce, make available,
+        modify, display, perform, distribute, and otherwise exploit its
+        Contributions, either on an unmodified basis, with Modifications, or as
+        part of a Larger Work; and
+
+     b. under Patent Claims of such Contributor to make, use, sell, offer for
+        sale, have made, import, and otherwise transfer either its Contributions
+        or its Contributor Version.
+
+2.2. Effective Date
+
+     The licenses granted in Section 2.1 with respect to any Contribution become
+     effective for each Contribution on the date the Contributor first distributes
+     such Contribution.
+
+2.3. Limitations on Grant Scope
+
+     The licenses granted in this Section 2 are the only rights granted under this
+     License. No additional rights or licenses will be implied from the distribution
+     or licensing of Covered Software under this License. Notwithstanding Section
+     2.1(b) above, no patent license is granted by a Contributor:
+
+     a. for any code that a Contributor has removed from Covered Software; or
+
+     b. for infringements caused by: (i) Your and any other third party’s
+        modifications of Covered Software, or (ii) the combination of its
+        Contributions with other software (except as part of its Contributor
+        Version); or
+
+     c. under Patent Claims infringed by Covered Software in the absence of its
+        Contributions.
+
+     This License does not grant any rights in the trademarks, service marks, or
+     logos of any Contributor (except as may be necessary to comply with the
+     notice requirements in Section 3.4).
+
+2.4. Subsequent Licenses
+
+     No Contributor makes additional grants as a result of Your choice to
+     distribute the Covered Software under a subsequent version of this License
+     (see Section 10.2) or under the terms of a Secondary License (if permitted
+     under the terms of Section 3.3).
+
+2.5. Representation
+
+     Each Contributor represents that the Contributor believes its Contributions
+     are its original creation(s) or it has sufficient rights to grant the
+     rights to its Contributions conveyed by this License.
+
+2.6. Fair Use
+
+     This License is not intended to limit any rights You have under applicable
+     copyright doctrines of fair use, fair dealing, or other equivalents.
+
+2.7. Conditions
+
+     Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in
+     Section 2.1.
+
+
+3. Responsibilities
+
+3.1. Distribution of Source Form
+
+     All distribution of Covered Software in Source Code Form, including any
+     Modifications that You create or to which You contribute, must be under the
+     terms of this License. You must inform recipients that the Source Code Form
+     of the Covered Software is governed by the terms of this License, and how
+     they can obtain a copy of this License. You may not attempt to alter or
+     restrict the recipients’ rights in the Source Code Form.
+
+3.2. Distribution of Executable Form
+
+     If You distribute Covered Software in Executable Form then:
+
+     a. such Covered Software must also be made available in Source Code Form,
+        as described in Section 3.1, and You must inform recipients of the
+        Executable Form how they can obtain a copy of such Source Code Form by
+        reasonable means in a timely manner, at a charge no more than the cost
+        of distribution to the recipient; and
+
+     b. You may distribute such Executable Form under the terms of this License,
+        or sublicense it under different terms, provided that the license for
+        the Executable Form does not attempt to limit or alter the recipients’
+        rights in the Source Code Form under this License.
+
+3.3. Distribution of a Larger Work
+
+     You may create and distribute a Larger Work under terms of Your choice,
+     provided that You also comply with the requirements of this License for the
+     Covered Software. If the Larger Work is a combination of Covered Software
+     with a work governed by one or more Secondary Licenses, and the Covered
+     Software is not Incompatible With Secondary Licenses, this License permits
+     You to additionally distribute such Covered Software under the terms of
+     such Secondary License(s), so that the recipient of the Larger Work may, at
+     their option, further distribute the Covered Software under the terms of
+     either this License or such Secondary License(s).
+
+3.4. Notices
+
+     You may not remove or alter the substance of any license notices (including
+     copyright notices, patent notices, disclaimers of warranty, or limitations
+     of liability) contained within the Source Code Form of the Covered
+     Software, except that You may alter any license notices to the extent
+     required to remedy known factual inaccuracies.
+
+3.5. Application of Additional Terms
+
+     You may choose to offer, and to charge a fee for, warranty, support,
+     indemnity or liability obligations to one or more recipients of Covered
+     Software. However, You may do so only on Your own behalf, and not on behalf
+     of any Contributor. You must make it absolutely clear that any such
+     warranty, support, indemnity, or liability obligation is offered by You
+     alone, and You hereby agree to indemnify every Contributor for any
+     liability incurred by such Contributor as a result of warranty, support,
+     indemnity or liability terms You offer. You may include additional
+     disclaimers of warranty and limitations of liability specific to any
+     jurisdiction.
+
+4. Inability to Comply Due to Statute or Regulation
+
+   If it is impossible for You to comply with any of the terms of this License
+   with respect to some or all of the Covered Software due to statute, judicial
+   order, or regulation then You must: (a) comply with the terms of this License
+   to the maximum extent possible; and (b) describe the limitations and the code
+   they affect. Such description must be placed in a text file included with all
+   distributions of the Covered Software under this License. Except to the
+   extent prohibited by statute or regulation, such description must be
+   sufficiently detailed for a recipient of ordinary skill to be able to
+   understand it.
+
+5. Termination
+
+5.1. The rights granted under this License will terminate automatically if You
+     fail to comply with any of its terms. However, if You become compliant,
+     then the rights granted under this License from a particular Contributor
+     are reinstated (a) provisionally, unless and until such Contributor
+     explicitly and finally terminates Your grants, and (b) on an ongoing basis,
+     if such Contributor fails to notify You of the non-compliance by some
+     reasonable means prior to 60 days after You have come back into compliance.
+     Moreover, Your grants from a particular Contributor are reinstated on an
+     ongoing basis if such Contributor notifies You of the non-compliance by
+     some reasonable means, this is the first time You have received notice of
+     non-compliance with this License from such Contributor, and You become
+     compliant prior to 30 days after Your receipt of the notice.
+
+5.2. If You initiate litigation against any entity by asserting a patent
+     infringement claim (excluding declaratory judgment actions, counter-claims,
+     and cross-claims) alleging that a Contributor Version directly or
+     indirectly infringes any patent, then the rights granted to You by any and
+     all Contributors for the Covered Software under Section 2.1 of this License
+     shall terminate.
+
+5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user
+     license agreements (excluding distributors and resellers) which have been
+     validly granted by You or Your distributors under this License prior to
+     termination shall survive termination.
+
+6. Disclaimer of Warranty
+
+   Covered Software is provided under this License on an “as is” basis, without
+   warranty of any kind, either expressed, implied, or statutory, including,
+   without limitation, warranties that the Covered Software is free of defects,
+   merchantable, fit for a particular purpose or non-infringing. The entire
+   risk as to the quality and performance of the Covered Software is with You.
+   Should any Covered Software prove defective in any respect, You (not any
+   Contributor) assume the cost of any necessary servicing, repair, or
+   correction. This disclaimer of warranty constitutes an essential part of this
+   License. No use of  any Covered Software is authorized under this License
+   except under this disclaimer.
+
+7. Limitation of Liability
+
+   Under no circumstances and under no legal theory, whether tort (including
+   negligence), contract, or otherwise, shall any Contributor, or anyone who
+   distributes Covered Software as permitted above, be liable to You for any
+   direct, indirect, special, incidental, or consequential damages of any
+   character including, without limitation, damages for lost profits, loss of
+   goodwill, work stoppage, computer failure or malfunction, or any and all
+   other commercial damages or losses, even if such party shall have been
+   informed of the possibility of such damages. This limitation of liability
+   shall not apply to liability for death or personal injury resulting from such
+   party’s negligence to the extent applicable law prohibits such limitation.
+   Some jurisdictions do not allow the exclusion or limitation of incidental or
+   consequential damages, so this exclusion and limitation may not apply to You.
+
+8. Litigation
+
+   Any litigation relating to this License may be brought only in the courts of
+   a jurisdiction where the defendant maintains its principal place of business
+   and such litigation shall be governed by laws of that jurisdiction, without
+   reference to its conflict-of-law provisions. Nothing in this Section shall
+   prevent a party’s ability to bring cross-claims or counter-claims.
+
+9. Miscellaneous
+
+   This License represents the complete agreement concerning the subject matter
+   hereof. If any provision of this License is held to be unenforceable, such
+   provision shall be reformed only to the extent necessary to make it
+   enforceable. Any law or regulation which provides that the language of a
+   contract shall be construed against the drafter shall not be used to construe
+   this License against a Contributor.
+
+
+10. Versions of the License
+
+10.1. New Versions
+
+      Mozilla Foundation is the license steward. Except as provided in Section
+      10.3, no one other than the license steward has the right to modify or
+      publish new versions of this License. Each version will be given a
+      distinguishing version number.
+
+10.2. Effect of New Versions
+
+      You may distribute the Covered Software under the terms of the version of
+      the License under which You originally received the Covered Software, or
+      under the terms of any subsequent version published by the license
+      steward.
+
+10.3. Modified Versions
+
+      If you create software not governed by this License, and you want to
+      create a new license for such software, you may create and use a modified
+      version of this License if you rename the license and remove any
+      references to the name of the license steward (except to note that such
+      modified license differs from this License).
+
+10.4. Distributing Source Code Form that is Incompatible With Secondary Licenses
+      If You choose to distribute Source Code Form that is Incompatible With
+      Secondary Licenses under the terms of this version of the License, the
+      notice described in Exhibit B of this License must be attached.
+
+Exhibit A - Source Code Form License Notice
+
+      This Source Code Form is subject to the
+      terms of the Mozilla Public License, v.
+      2.0. If a copy of the MPL was not
+      distributed with this file, You can
+      obtain one at
+      http://mozilla.org/MPL/2.0/.
+
+If it is not possible or desirable to put the notice in a particular file, then
+You may include the notice in a location (such as a LICENSE file in a relevant
+directory) where a recipient would be likely to look for such a notice.
+
+You may add additional accurate notices of copyright ownership.
+
+Exhibit B - “Incompatible With Secondary Licenses” Notice
+
+      This Source Code Form is “Incompatible
+      With Secondary Licenses”, as defined by
+      the Mozilla Public License, v. 2.0.
diff --git a/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/diagnostic.go b/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/diagnostic.go
new file mode 100644
index 0000000..8d04ad4
--- /dev/null
+++ b/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/diagnostic.go
@@ -0,0 +1,138 @@
+package tfconfig
+
+import (
+        "fmt"
+
+        legacyhclparser "github.com/hashicorp/hcl/hcl/parser"
+        "github.com/hashicorp/hcl2/hcl"
+)
+
+// Diagnostic describes a problem (error or warning) encountered during
+// configuration loading.
+type Diagnostic struct {
+        Severity DiagSeverity `json:"severity"`
+        Summary  string       `json:"summary"`
+        Detail   string       `json:"detail,omitempty"`
+
+        // Pos is not populated for all diagnostics, but when populated should
+        // indicate a particular line that the described problem relates to.
+        Pos *SourcePos `json:"pos,omitempty"`
+}
+
+// Diagnostics represents a sequence of diagnostics. This is the type that
+// should be returned from a function that might generate diagnostics.
+type Diagnostics []Diagnostic
+
+// HasErrors returns true if there is at least one Diagnostic of severity
+// DiagError in the receiever.
+//
+// If a function returns a Diagnostics without errors then the result can
+// be assumed to be complete within the "best effort" constraints of this
+// library. If errors are present then the caller may wish to employ more
+// caution in relying on the result.
+func (diags Diagnostics) HasErrors() bool {
+        for _, diag := range diags {
+                if diag.Severity == DiagError {
+                        return true
+                }
+        }
+        return false
+}
+
+func (diags Diagnostics) Error() string {
+        switch len(diags) {
+        case 0:
+                return "no problems"
+        case 1:
+                return fmt.Sprintf("%s: %s", diags[0].Summary, diags[0].Detail)
+        default:
+                return fmt.Sprintf("%s: %s (and %d other messages)", diags[0].Summary, diags[0].Detail, len(diags)-1)
+        }
+}
+
+// Err returns an error representing the receiver if the receiver HasErrors, or
+// nil otherwise.
+//
+// The returned error can be type-asserted back to a Diagnostics if needed.
+func (diags Diagnostics) Err() error {
+        if diags.HasErrors() {
+                return diags
+        }
+        return nil
+}
+
+// DiagSeverity describes the severity of a Diagnostic.
+type DiagSeverity rune
+
+// DiagError indicates a problem that prevented proper processing of the
+// configuration. In the precense of DiagError diagnostics the result is
+// likely to be incomplete.
+const DiagError DiagSeverity = 'E'
+
+// DiagWarning indicates a problem that the user may wish to consider but
+// that did not prevent proper processing of the configuration.
+const DiagWarning DiagSeverity = 'W'
+
+// MarshalJSON is an implementation of encoding/json.Marshaler
+func (s DiagSeverity) MarshalJSON() ([]byte, error) {
+        switch s {
+        case DiagError:
+                return []byte(`"error"`), nil
+        case DiagWarning:
+                return []byte(`"warning"`), nil
+        default:
+                return []byte(`"invalid"`), nil
+        }
+}
+
+func diagnosticsHCL(diags hcl.Diagnostics) Diagnostics {
+        if len(diags) == 0 {
+                return nil
+        }
+        ret := make(Diagnostics, len(diags))
+        for i, diag := range diags {
+                ret[i] = Diagnostic{
+                        Summary: diag.Summary,
+                        Detail:  diag.Detail,
+                }
+                switch diag.Severity {
+                case hcl.DiagError:
+                        ret[i].Severity = DiagError
+                case hcl.DiagWarning:
+                        ret[i].Severity = DiagWarning
+                }
+                if diag.Subject != nil {
+                        pos := sourcePosHCL(*diag.Subject)
+                        ret[i].Pos = &pos
+                }
+        }
+        return ret
+}
+
+func diagnosticsError(err error) Diagnostics {
+        if err == nil {
+                return nil
+        }
+
+        if posErr, ok := err.(*legacyhclparser.PosError); ok {
+                pos := sourcePosLegacyHCL(posErr.Pos, "")
+                return Diagnostics{
+                        Diagnostic{
+                                Severity: DiagError,
+                                Summary:  posErr.Err.Error(),
+                                Pos:      &pos,
+                        },
+                }
+        }
+
+        return Diagnostics{
+                Diagnostic{
+                        Severity: DiagError,
+                        Summary:  err.Error(),
+                },
+        }
+}
+
+func diagnosticsErrorf(format string, args ...interface{}) Diagnostics {
+        return diagnosticsError(fmt.Errorf(format, args...))
+}
diff --git a/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/doc.go b/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/doc.go
new file mode 100644
index 0000000..1604a6e
--- /dev/null
+++ b/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/doc.go
@@ -0,0 +1,21 @@
+// Package tfconfig is a helper library that does careful, shallow parsing of
+// Terraform modules to provide access to high-level metadata while
+// remaining broadly compatible with configurations targeting various
+// different Terraform versions.
+//
+// This packge focuses on describing top-level objects only, and in particular
+// does not attempt any sort of processing that would require access to plugins.
+// Currently it allows callers to extract high-level information about
+// variables, outputs, resource blocks, provider dependencies, and Terraform
+// Core dependencies.
+//
+// This package only works at the level of single modules. A full configuration
+// is a tree of potentially several modules, some of which may be references
+// to remote packages. There are some basic helpers for traversing calls to
+// modules at relative local paths, however.
+//
+// This package employs a "best effort" parsing strategy, producing as complete
+// a result as possible even though the input may not be entirely valid. The
+// intended use-case is high-level analysis and indexing of externally-facing
+// module characteristics, as opposed to validating or even applying the module.
+package tfconfig
diff --git a/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/load.go b/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/load.go
new file mode 100644
index 0000000..2d13fe1
--- /dev/null
+++ b/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/load.go
@@ -0,0 +1,130 @@
+package tfconfig
+
+import (
+        "fmt"
+        "io/ioutil"
+        "path/filepath"
+        "strings"
+
+        "github.com/hashicorp/hcl2/hcl"
+)
+
+// LoadModule reads the directory at the given path and attempts to interpret
+// it as a Terraform module.
+func LoadModule(dir string) (*Module, Diagnostics) {
+
+        // For broad compatibility here we actually have two separate loader
+        // codepaths. The main one uses the new HCL parser and API and is intended
+        // for configurations from Terraform 0.12 onwards (though will work for
+        // many older configurations too), but we'll also fall back on one that
+        // uses the _old_ HCL implementation so we can deal with some edge-cases
+        // that are not valid in new HCL.
+
+        module, diags := loadModule(dir)
+        if diags.HasErrors() {
+                // Try using the legacy HCL parser and see if we fare better.
+                legacyModule, legacyDiags := loadModuleLegacyHCL(dir)
+                if !legacyDiags.HasErrors() {
+                        legacyModule.init(legacyDiags)
+                        return legacyModule, legacyDiags
+                }
+        }
+
+        module.init(diags)
+        return module, diags
+}
+
+// IsModuleDir checks if the given path contains terraform configuration files.
+// This allows the caller to decide how to handle directories that do not have tf files.
+func IsModuleDir(dir string) bool {
+        primaryPaths, _ := dirFiles(dir)
+        if len(primaryPaths) == 0 {
+                return false
+        }
+        return true
+}
+
+func (m *Module) init(diags Diagnostics) {
+        // Fill in any additional provider requirements that are implied by
+        // resource configurations, to avoid the caller from needing to apply
+        // this logic itself. Implied requirements don't have version constraints,
+        // but we'll make sure the requirement value is still non-nil in this
+        // case so callers can easily recognize it.
+        for _, r := range m.ManagedResources {
+                if _, exists := m.RequiredProviders[r.Provider.Name]; !exists {
+                        m.RequiredProviders[r.Provider.Name] = []string{}
+                }
+        }
+        for _, r := range m.DataResources {
+                if _, exists := m.RequiredProviders[r.Provider.Name]; !exists {
+                        m.RequiredProviders[r.Provider.Name] = []string{}
+                }
+        }
+
+        // We redundantly also reference the diagnostics from inside the module
+        // object, primarily so that we can easily included in JSON-serialized
+        // versions of the module object.
+        m.Diagnostics = diags
+}
+
+func dirFiles(dir string) (primary []string, diags hcl.Diagnostics) {
+        infos, err := ioutil.ReadDir(dir)
+        if err != nil {
+                diags = append(diags, &hcl.Diagnostic{
+                        Severity: hcl.DiagError,
+                        Summary:  "Failed to read module directory",
+                        Detail:   fmt.Sprintf("Module directory %s does not exist or cannot be read.", dir),
+                })
+                return
+        }
+
+        var override []string
+        for _, info := range infos {
+                if info.IsDir() {
+                        // We only care about files
+                        continue
+                }
+
+                name := info.Name()
+                ext := fileExt(name)
+                if ext == "" || isIgnoredFile(name) {
+                        continue
+                }
+
+                baseName := name[:len(name)-len(ext)] // strip extension
+                isOverride := baseName == "override" || strings.HasSuffix(baseName, "_override")
+
+                fullPath := filepath.Join(dir, name)
+                if isOverride {
+                        override = append(override, fullPath)
+                } else {
+                        primary = append(primary, fullPath)
+                }
+        }
+
+        // We are assuming that any _override files will be logically named,
+        // and processing the files in alphabetical order. Primaries first, then overrides.
+        primary = append(primary, override...)
+
+        return
+}
+
+// fileExt returns the Terraform configuration extension of the given
+// path, or a blank string if it is not a recognized extension.
+func fileExt(path string) string {
+        if strings.HasSuffix(path, ".tf") {
+                return ".tf"
+        } else if strings.HasSuffix(path, ".tf.json") {
+                return ".tf.json"
+        } else {
+                return ""
+        }
+}
+
+// isIgnoredFile returns true if the given filename (which must not have a
+// directory path ahead of it) should be ignored as e.g. an editor swap file.
+func isIgnoredFile(name string) bool {
+        return strings.HasPrefix(name, ".") || // Unix-like hidden files
+                strings.HasSuffix(name, "~") || // vim
+                strings.HasPrefix(name, "#") && strings.HasSuffix(name, "#") // emacs
+}
diff --git a/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/load_hcl.go b/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/load_hcl.go
new file mode 100644
index 0000000..72b5d4a
--- /dev/null
+++ b/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/load_hcl.go
@@ -0,0 +1,322 @@
+package tfconfig
+
+import (
+        "encoding/json"
+        "fmt"
+        "strings"
+
+        "github.com/hashicorp/hcl2/hcl/hclsyntax"
+
+        "github.com/hashicorp/hcl2/gohcl"
+        "github.com/hashicorp/hcl2/hcl"
+        "github.com/hashicorp/hcl2/hclparse"
+        ctyjson "github.com/zclconf/go-cty/cty/json"
+)
+
+func loadModule(dir string) (*Module, Diagnostics) {
+        mod := newModule(dir)
+        primaryPaths, diags := dirFiles(dir)
+
+        parser := hclparse.NewParser()
+
+        for _, filename := range primaryPaths {
+                var file *hcl.File
+                var fileDiags hcl.Diagnostics
+                if strings.HasSuffix(filename, ".json") {
+                        file, fileDiags = parser.ParseJSONFile(filename)
+                } else {
+                        file, fileDiags = parser.ParseHCLFile(filename)
+                }
+                diags = append(diags, fileDiags...)
+                if file == nil {
+                        continue
+                }
+
+                content, _, contentDiags := file.Body.PartialContent(rootSchema)
+                diags = append(diags, contentDiags...)
+
+                for _, block := range content.Blocks {
+                        switch block.Type {
+
+                        case "terraform":
+                                content, _, contentDiags := block.Body.PartialContent(terraformBlockSchema)
+                                diags = append(diags, contentDiags...)
+
+                                if attr, defined := content.Attributes["required_version"]; defined {
+                                        var version string
+                                        valDiags := gohcl.DecodeExpression(attr.Expr, nil, &version)
+                                        diags = append(diags, valDiags...)
+                                        if !valDiags.HasErrors() {
+                                                mod.RequiredCore = append(mod.RequiredCore, version)
+                                        }
+                                }
+
+                                for _, block := range content.Blocks {
+                                        // Our schema only allows required_providers here, so we
+                                        // assume that we'll only get that block type.
+                                        attrs, attrDiags := block.Body.JustAttributes()
+                                        diags = append(diags, attrDiags...)
+
+                                        for name, attr := range attrs {
+                                                var version string
+                                                valDiags := gohcl.DecodeExpression(attr.Expr, nil, &version)
+                                                diags = append(diags, valDiags...)
+                                                if !valDiags.HasErrors() {
+                                                        mod.RequiredProviders[name] = append(mod.RequiredProviders[name], version)
+                                                }
+                                        }
+                                }
+
+                        case "variable":
+                                content, _, contentDiags := block.Body.PartialContent(variableSchema)
+                                diags = append(diags, contentDiags...)
+
+                                name := block.Labels[0]
+                                v := &Variable{
+                                        Name: name,
+                                        Pos:  sourcePosHCL(block.DefRange),
+                                }
+
+                                mod.Variables[name] = v
+
+                                if attr, defined := content.Attributes["type"]; defined {
+                                        // We handle this particular attribute in a somewhat-tricky way:
+                                        // since Terraform may evolve its type expression syntax in
+                                        // future versions, we don't want to be overly-strict in how
+                                        // we handle it here, and so we'll instead just take the raw
+                                        // source provided by the user, using the source location
+                                        // information in the expression object.
+                                        //
+                                        // However, older versions of Terraform expected the type
+                                        // to be a string containing a keyword, so we'll need to
+                                        // handle that as a special case first for backward compatibility.
+
+                                        var typeExpr string
+
+                                        var typeExprAsStr string
+                                        valDiags := gohcl.DecodeExpression(attr.Expr, nil, &typeExprAsStr)
+                                        if !valDiags.HasErrors() {
+                                                typeExpr = typeExprAsStr
+                                        } else {
+
+                                                rng := attr.Expr.Range()
+                                                sourceFilename := rng.Filename
+                                                source, exists := parser.Sources()[sourceFilename]
+                                                if exists {
+                                                        typeExpr = string(rng.SliceBytes(source))
+                                                } else {
+                                                        // This should never happen, so we'll just warn about it and leave the type unspecified.
+                                                        diags = append(diags, &hcl.Diagnostic{
+                                                                Severity: hcl.DiagError,
+                                                                Summary:  "Source code not available",
+                                                                Detail:   fmt.Sprintf("Source code is not available for the file %q, which declares the variable %q.", sourceFilename, name),
+                                                                Subject:  &block.DefRange,
+                                                        })
+                                                        typeExpr = ""
+                                                }
+
+                                        }
+
+                                        v.Type = typeExpr
+                                }
+
+                                if attr, defined := content.Attributes["description"]; defined {
+                                        var description string
+                                        valDiags := gohcl.DecodeExpression(attr.Expr, nil, &description)
+                                        diags = append(diags, valDiags...)
+                                        v.Description = description
+                                }
+
+                                if attr, defined := content.Attributes["default"]; defined {
+                                        // To avoid the caller needing to deal with cty here, we'll
+                                        // use its JSON encoding to convert into an
+                                        // approximately-equivalent plain Go interface{} value
+                                        // to return.
+                                        val, valDiags := attr.Expr.Value(nil)
+                                        diags = append(diags, valDiags...)
+                                        if val.IsWhollyKnown() { // should only be false if there are errors in the input
+                                                valJSON, err := ctyjson.Marshal(val, val.Type())
+                                                if err != nil {
+                                                        // Should never happen, since all possible known
+                                                        // values have a JSON mapping.
+                                                        panic(fmt.Errorf("failed to serialize default value as JSON: %s", err))
+                                                }
+                                                var def interface{}
+                                                err = json.Unmarshal(valJSON, &def)
+                                                if err != nil {
+                                                        // Again should never happen, because valJSON is
+                                                        // guaranteed valid by ctyjson.Marshal.
+                                                        panic(fmt.Errorf("failed to re-parse default value from JSON: %s", err))
+                                                }
+                                                v.Default = def
+                                        }
+                                }
+
+                        case "output":
+
+                                content, _, contentDiags := block.Body.PartialContent(outputSchema)
+                                diags = append(diags, contentDiags...)
+
+                                name := block.Labels[0]
+                                o := &Output{
+                                        Name: name,
+                                        Pos:  sourcePosHCL(block.DefRange),
+                                }
+
+                                mod.Outputs[name] = o
+
+                                if attr, defined := content.Attributes["description"]; defined {
+                                        var description string
+                                        valDiags := gohcl.DecodeExpression(attr.Expr, nil, &description)
+                                        diags = append(diags, valDiags...)
+                                        o.Description = description
+                                }
+
+                        case "provider":
+
+                                content, _, contentDiags := block.Body.PartialContent(providerConfigSchema)
+                                diags = append(diags, contentDiags...)
+
+                                name := block.Labels[0]
+
+                                if attr, defined := content.Attributes["version"]; defined {
+                                        var version string
+                                        valDiags := gohcl.DecodeExpression(attr.Expr, nil, &version)
+                                        diags = append(diags, valDiags...)
+                                        if !valDiags.HasErrors() {
+                                                mod.RequiredProviders[name] = append(mod.RequiredProviders[name], version)
+                                        }
+                                }
+
+                                // Even if there wasn't an explicit version required, we still
+                                // need an entry in our map to signal the unversioned dependency.
+                                if _, exists := mod.RequiredProviders[name]; !exists {
+                                        mod.RequiredProviders[name] = []string{}
+                                }
+
+                        case "resource", "data":
+
+                                content, _, contentDiags := block.Body.PartialContent(resourceSchema)
+                                diags = append(diags, contentDiags...)
+
+                                typeName := block.Labels[0]
+                                name := block.Labels[1]
+
+                                r := &Resource{
+                                        Type: typeName,
+                                        Name: name,
+                                        Pos:  sourcePosHCL(block.DefRange),
+                                }
+
+                                var resourcesMap map[string]*Resource
+
+                                switch block.Type {
+                                case "resource":
+                                        r.Mode = ManagedResourceMode
+                                        resourcesMap = mod.ManagedResources
+                                case "data":
+                                        r.Mode = DataResourceMode
+                                        resourcesMap = mod.DataResources
+                                }
+
+                                key := r.MapKey()
+
+                                resourcesMap[key] = r
+
+                                if attr, defined := content.Attributes["provider"]; defined {
+                                        // New style here is to provide this as a naked traversal
+                                        // expression, but we also support quoted references for
+                                        // older configurations that predated this convention.
+                                        traversal, travDiags := hcl.AbsTraversalForExpr(attr.Expr)
+                                        if travDiags.HasErrors() {
+                                                traversal = nil // in case we got any partial results
+
+                                                // Fall back on trying to parse as a string
+                                                var travStr string
+                                                valDiags := gohcl.DecodeExpression(attr.Expr, nil, &travStr)
+                                                if !valDiags.HasErrors() {
+                                                        var strDiags hcl.Diagnostics
+                                                        traversal, strDiags = hclsyntax.ParseTraversalAbs([]byte(travStr), "", hcl.Pos{})
+                                                        if strDiags.HasErrors() {
+                                                                traversal = nil
+                                                        }
+                                                }
+                                        }
+
+                                        // If we get out here with a nil traversal then we didn't
+                                        // succeed in processing the input.
+                                        if len(traversal) > 0 {
+                                                providerName := traversal.RootName()
+                                                alias := ""
+                                                if len(traversal) > 1 {
+                                                        if getAttr, ok := traversal[1].(hcl.TraverseAttr); ok {
+                                                                alias = getAttr.Name
+                                                        }
+                                                }
+                                                r.Provider = ProviderRef{
+                                                        Name:  providerName,
+                                                        Alias: alias,
+                                                }
+                                        } else {
+                                                diags = append(diags, &hcl.Diagnostic{
+                                                        Severity: hcl.DiagError,
+                                                        Summary:  "Invalid provider reference",
+                                                        Detail:   "Provider argument requires a provider name followed by an optional alias, like \"aws.foo\".",
+                                                        Subject:  attr.Expr.Range().Ptr(),
+                                                })
+                                        }
+                                } else {
+                                        // If provider _isn't_ set then we'll infer it from the
+                                        // resource type.
+                                        r.Provider = ProviderRef{
+                                                Name: resourceTypeDefaultProviderName(r.Type),
+                                        }
+                                }
+
+                        case "module":
+
+                                content, _, contentDiags := block.Body.PartialContent(moduleCallSchema)
+                                diags = append(diags, contentDiags...)
+
+                                name := block.Labels[0]
+                                mc := &ModuleCall{
+                                        Name: block.Labels[0],
+                                        Pos:  sourcePosHCL(block.DefRange),
+                                }
+
+                                // check if this is overriding an existing module
+                                var origSource string
+                                if origMod, exists := mod.ModuleCalls[name]; exists {
+                                        origSource = origMod.Source
+                                }
+
+                                mod.ModuleCalls[name] = mc
+
+                                if attr, defined := content.Attributes["source"]; defined {
+                                        var source string
+                                        valDiags := gohcl.DecodeExpression(attr.Expr, nil, &source)
+                                        diags = append(diags, valDiags...)
+                                        mc.Source = source
+                                }
+
+                                if mc.Source == "" {
+                                        mc.Source = origSource
+                                }
+
+                                if attr, defined := content.Attributes["version"]; defined {
+                                        var version string
+                                        valDiags := gohcl.DecodeExpression(attr.Expr, nil, &version)
+                                        diags = append(diags, valDiags...)
+                                        mc.Version = version
+                                }
+
+                        default:
+                                // Should never happen because our cases above should be
+                                // exhaustive for our schema.
+                                panic(fmt.Errorf("unhandled block type %q", block.Type))
+                        }
+                }
+        }
+
+        return mod, diagnosticsHCL(diags)
+}
diff --git a/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/load_legacy.go b/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/load_legacy.go
new file mode 100644
index 0000000..86ffdf1
--- /dev/null
+++ b/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/load_legacy.go
@@ -0,0 +1,325 @@
+package tfconfig
+
+import (
+        "io/ioutil"
+        "strings"
+
+        legacyhcl "github.com/hashicorp/hcl"
+        legacyast "github.com/hashicorp/hcl/hcl/ast"
+)
+
+func loadModuleLegacyHCL(dir string) (*Module, Diagnostics) {
+        // This implementation is intentionally more quick-and-dirty than the
+        // main loader. In particular, it doesn't bother to keep careful track
+        // of multiple error messages because we always fall back on returning
+        // the main parser's error message if our fallback parsing produces
+        // an error, and thus the errors here are not seen by the end-caller.
+        mod := newModule(dir)
+
+        primaryPaths, diags := dirFiles(dir)
+        if diags.HasErrors() {
+                return mod, diagnosticsHCL(diags)
+        }
+
+        for _, filename := range primaryPaths {
+                src, err := ioutil.ReadFile(filename)
+                if err != nil {
+                        return mod, diagnosticsErrorf("Error reading %s: %s", filename, err)
+                }
+
+                hclRoot, err := legacyhcl.Parse(string(src))
+                if err != nil {
+                        return mod, diagnosticsErrorf("Error parsing %s: %s", filename, err)
+                }
+
+                list, ok := hclRoot.Node.(*legacyast.ObjectList)
+                if !ok {
+                        return mod, diagnosticsErrorf("Error parsing %s: no root object", filename)
+                }
+
+                for _, item := range list.Filter("terraform").Items {
+                        if len(item.Keys) > 0 {
+                                item = &legacyast.ObjectItem{
+                                        Val: &legacyast.ObjectType{
+                                                List: &legacyast.ObjectList{
+                                                        Items: []*legacyast.ObjectItem{item},
+                                                },
+                                        },
+                                }
+                        }
+
+                        type TerraformBlock struct {
+                                RequiredVersion string `hcl:"required_version"`
+                        }
+                        var block TerraformBlock
+                        err = legacyhcl.DecodeObject(&block, item.Val)
+                        if err != nil {
+                                return nil, diagnosticsErrorf("terraform block: %s", err)
+                        }
+
+                        if block.RequiredVersion != "" {
+                                mod.RequiredCore = append(mod.RequiredCore, block.RequiredVersion)
+                        }
+                }
+
+                if vars := list.Filter("variable"); len(vars.Items) > 0 {
+                        vars = vars.Children()
+                        type VariableBlock struct {
+                                Type        string `hcl:"type"`
+                                Default     interface{}
+                                Description string
+                                Fields      []string `hcl:",decodedFields"`
+                        }
+
+                        for _, item := range vars.Items {
+                                unwrapLegacyHCLObjectKeysFromJSON(item, 1)
+
+                                if len(item.Keys) != 1 {
+                                        return nil, diagnosticsErrorf("variable block at %s has no label", item.Pos())
+                                }
+
+                                name := item.Keys[0].Token.Value().(string)
+
+                                var block VariableBlock
+                                err := legacyhcl.DecodeObject(&block, item.Val)
+                                if err != nil {
+                                        return nil, diagnosticsErrorf("invalid variable block at %s: %s", item.Pos(), err)
+                                }
+
+                                // Clean up legacy HCL decoding ambiguity by unwrapping list of maps
+                                if ms, ok := block.Default.([]map[string]interface{}); ok {
+                                        def := make(map[string]interface{})
+                                        for _, m := range ms {
+                                                for k, v := range m {
+                                                        def[k] = v
+                                                }
+                                        }
+                                        block.Default = def
+                                }
+
+                                v := &Variable{
+                                        Name:        name,
+                                        Type:        block.Type,
+                                        Description: block.Description,
+                                        Default:     block.Default,
+                                        Pos:         sourcePosLegacyHCL(item.Pos(), filename),
+                                }
+                                if _, exists := mod.Variables[name]; exists {
+                                        return nil, diagnosticsErrorf("duplicate variable block for %q", name)
+                                }
+                                mod.Variables[name] = v
+
+                        }
+                }
+
+                if outputs := list.Filter("output"); len(outputs.Items) > 0 {
+                        outputs = outputs.Children()
+                        type OutputBlock struct {
+                                Description string
+                        }
+
+                        for _, item := range outputs.Items {
+                                unwrapLegacyHCLObjectKeysFromJSON(item, 1)
+
+                                if len(item.Keys) != 1 {
+                                        return nil, diagnosticsErrorf("output block at %s has no label", item.Pos())
+                                }
+
+                                name := item.Keys[0].Token.Value().(string)
+
+                                var block OutputBlock
+                                err := legacyhcl.DecodeObject(&block, item.Val)
+                                if err != nil {
+                                        return nil, diagnosticsErrorf("invalid output block at %s: %s", item.Pos(), err)
+                                }
+
+                                o := &Output{
+                                        Name:        name,
+                                        Description: block.Description,
+                                        Pos:         sourcePosLegacyHCL(item.Pos(), filename),
+                                }
+                                if _, exists := mod.Outputs[name]; exists {
+                                        return nil, diagnosticsErrorf("duplicate output block for %q", name)
+                                }
+                                mod.Outputs[name] = o
+                        }
+                }
+
+                for _, blockType := range []string{"resource", "data"} {
+                        if resources := list.Filter(blockType); len(resources.Items) > 0 {
+                                resources = resources.Children()
+                                type ResourceBlock struct {
+                                        Provider string
+                                }
+
+                                for _, item := range resources.Items {
+                                        unwrapLegacyHCLObjectKeysFromJSON(item, 2)
+
+                                        if len(item.Keys) != 2 {
+                                                return nil, diagnosticsErrorf("resource block at %s has wrong label count", item.Pos())
+                                        }
+
+                                        typeName := item.Keys[0].Token.Value().(string)
+                                        name := item.Keys[1].Token.Value().(string)
+                                        var mode ResourceMode
+                                        var rMap map[string]*Resource
+                                        switch blockType {
+                                        case "resource":
+                                                mode = ManagedResourceMode
+                                                rMap = mod.ManagedResources
+                                        case "data":
+                                                mode = DataResourceMode
+                                                rMap = mod.DataResources
+                                        }
+
+                                        var block ResourceBlock
+                                        err := legacyhcl.DecodeObject(&block, item.Val)
+                                        if err != nil {
+                                                return nil, diagnosticsErrorf("invalid resource block at %s: %s", item.Pos(), err)
+                                        }
+
+                                        var providerName, providerAlias string
+                                        if dotPos := strings.IndexByte(block.Provider, '.'); dotPos != -1 {
+                                                providerName = block.Provider[:dotPos]
+                                                providerAlias = block.Provider[dotPos+1:]
+                                        } else {
+                                                providerName = block.Provider
+                                        }
+                                        if providerName == "" {
+                                                providerName = resourceTypeDefaultProviderName(typeName)
+                                        }
+
+                                        r := &Resource{
+                                                Mode: mode,
+                                                Type: typeName,
+                                                Name: name,
+                                                Provider: ProviderRef{
+                                                        Name:  providerName,
+                                                        Alias: providerAlias,
+                                                },
+                                                Pos: sourcePosLegacyHCL(item.Pos(), filename),
+                                        }
+                                        key := r.MapKey()
+                                        if _, exists := rMap[key]; exists {
+                                                return nil, diagnosticsErrorf("duplicate resource block for %q", key)
+                                        }
+                                        rMap[key] = r
+                                }
+                        }
+
+                }
+
+                if moduleCalls := list.Filter("module"); len(moduleCalls.Items) > 0 {
+                        moduleCalls = moduleCalls.Children()
+                        type ModuleBlock struct {
+                                Source  string
+                                Version string
+                        }
+
+                        for _, item := range moduleCalls.Items {
+                                unwrapLegacyHCLObjectKeysFromJSON(item, 1)
+
+                                if len(item.Keys) != 1 {
+                                        return nil, diagnosticsErrorf("module block at %s has no label", item.Pos())
+                                }
+
+                                name := item.Keys[0].Token.Value().(string)
+
+                                var block ModuleBlock
+                                err := legacyhcl.DecodeObject(&block, item.Val)
+                                if err != nil {
+                                        return nil, diagnosticsErrorf("module block at %s: %s", item.Pos(), err)
+                                }
+
+                                mc := &ModuleCall{
+                                        Name:    name,
+                                        Source:  block.Source,
+                                        Version: block.Version,
+                                        Pos:     sourcePosLegacyHCL(item.Pos(), filename),
+                                }
+                                // it's possible this module call is from an override file
+                                if origMod, exists := mod.ModuleCalls[name]; exists {
+                                        if mc.Source == "" {
+                                                mc.Source = origMod.Source
+                                        }
+                                }
+                                mod.ModuleCalls[name] = mc
+                        }
+                }
+
+                if providerConfigs := list.Filter("provider"); len(providerConfigs.Items) > 0 {
+                        providerConfigs = providerConfigs.Children()
+                        type ProviderBlock struct {
+                                Version string
+                        }
+
+                        for _, item := range providerConfigs.Items {
+                                unwrapLegacyHCLObjectKeysFromJSON(item, 1)
+
+                                if len(item.Keys) != 1 {
+                                        return nil, diagnosticsErrorf("provider block at %s has no label", item.Pos())
+                                }
+
+                                name := item.Keys[0].Token.Value().(string)
+
+                                var block ProviderBlock
+                                err := legacyhcl.DecodeObject(&block, item.Val)
+                                if err != nil {
+                                        return nil, diagnosticsErrorf("invalid provider block at %s: %s", item.Pos(), err)
+                                }
+
+                                if block.Version != "" {
+                                        mod.RequiredProviders[name] = append(mod.RequiredProviders[name], block.Version)
+                                }
+
+                                // Even if there wasn't an explicit version required, we still
+                                // need an entry in our map to signal the unversioned dependency.
+                                if _, exists := mod.RequiredProviders[name]; !exists {
+                                        mod.RequiredProviders[name] = []string{}
+                                }
+
+                        }
+                }
+        }
+
+        return mod, nil
+}
+
+// unwrapLegacyHCLObjectKeysFromJSON cleans up an edge case that can occur when
+// parsing JSON as input: if we're parsing JSON then directly nested
+// items will show up as additional "keys".
+//
+// For objects that expect a fixed number of keys, this breaks the
+// decoding process. This function unwraps the object into what it would've
+// looked like if it came directly from HCL by specifying the number of keys
+// you expect.
+//
+// Example:
+//
+// { "foo": { "baz": {} } }
+//
+// Will show up with Keys being: []string{"foo", "baz"}
+// when we really just want the first two. This function will fix this.
+func unwrapLegacyHCLObjectKeysFromJSON(item *legacyast.ObjectItem, depth int) {
+        if len(item.Keys) > depth && item.Keys[0].Token.JSON {
+                for len(item.Keys) > depth {
+                        // Pop off the last key
+                        n := len(item.Keys)
+                        key := item.Keys[n-1]
+                        item.Keys[n-1] = nil
+                        item.Keys = item.Keys[:n-1]
+
+                        // Wrap our value in a list
+                        item.Val = &legacyast.ObjectType{
+                                List: &legacyast.ObjectList{
+                                        Items: []*legacyast.ObjectItem{
+                                                &legacyast.ObjectItem{
+                                                        Keys: []*legacyast.ObjectKey{key},
+                                                        Val:  item.Val,
+                                                },
+                                        },
+                                },
+                        }
+                }
+        }
+}
diff --git a/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/module.go b/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/module.go
new file mode 100644
index 0000000..65ddb23
--- /dev/null
+++ b/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/module.go
@@ -0,0 +1,35 @@
+package tfconfig
+
+// Module is the top-level type representing a parsed and processed Terraform
+// module.
+type Module struct {
+        // Path is the local filesystem directory where the module was loaded from.
+        Path string `json:"path"`
+
+        Variables map[string]*Variable `json:"variables"`
+        Outputs   map[string]*Output   `json:"outputs"`
+
+        RequiredCore      []string            `json:"required_core,omitempty"`
+        RequiredProviders map[string][]string `json:"required_providers"`
+
+        ManagedResources map[string]*Resource   `json:"managed_resources"`
+        DataResources    map[string]*Resource   `json:"data_resources"`
+        ModuleCalls      map[string]*ModuleCall `json:"module_calls"`
+
+        // Diagnostics records any errors and warnings that were detected during
+        // loading, primarily for inclusion in serialized forms of the module
+        // since this slice is also returned as a second argument from LoadModule.
+        Diagnostics Diagnostics `json:"diagnostics,omitempty"`
+}
+
+func newModule(path string) *Module {
+        return &Module{
+                Path:              path,
+                Variables:         make(map[string]*Variable),
+                Outputs:           make(map[string]*Output),
+                RequiredProviders: make(map[string][]string),
+                ManagedResources:  make(map[string]*Resource),
+                DataResources:     make(map[string]*Resource),
+                ModuleCalls:       make(map[string]*ModuleCall),
+        }
+}
diff --git a/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/module_call.go b/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/module_call.go
new file mode 100644
index 0000000..5e1e05a
--- /dev/null
+++ b/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/module_call.go
@@ -0,0 +1,11 @@
+package tfconfig
+
+// ModuleCall represents a "module" block within a module. That is, a
+// declaration of a child module from inside its parent.
+type ModuleCall struct {
+        Name    string `json:"name"`
+        Source  string `json:"source"`
+        Version string `json:"version,omitempty"`
+
+        Pos SourcePos `json:"pos"`
+}
diff --git a/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/output.go b/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/output.go
new file mode 100644
index 0000000..890b25e
--- /dev/null
+++ b/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/output.go
@@ -0,0 +1,9 @@
+package tfconfig
+
+// Output represents a single output from a Terraform module.
+type Output struct {
+        Name        string `json:"name"`
+        Description string `json:"description,omitempty"`
+
+        Pos SourcePos `json:"pos"`
+}
diff --git a/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/provider_ref.go b/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/provider_ref.go
new file mode 100644
index 0000000..d924837
--- /dev/null
+++ b/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/provider_ref.go
@@ -0,0 +1,9 @@
+package tfconfig
+
+// ProviderRef is a reference to a provider configuration within a module.
+// It represents the contents of a "provider" argument in a resource, or
+// a value in the "providers" map for a module call.
+type ProviderRef struct {
+        Name  string `json:"name"`
+        Alias string `json:"alias,omitempty"` // Empty if the default provider configuration is referenced
+}
diff --git a/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/resource.go b/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/resource.go
new file mode 100644
index 0000000..401c8fc
--- /dev/null
+++ b/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/resource.go
@@ -0,0 +1,64 @@
+package tfconfig
+
+import (
+        "fmt"
+        "strconv"
+        "strings"
+)
+
+// Resource represents a single "resource" or "data" block within a module.
+type Resource struct {
+        Mode ResourceMode `json:"mode"`
+        Type string       `json:"type"`
+        Name string       `json:"name"`
+
+        Provider ProviderRef `json:"provider"`
+
+        Pos SourcePos `json:"pos"`
+}
+
+// MapKey returns a string that can be used to uniquely identify the receiver
+// in a map[string]*Resource.
+func (r *Resource) MapKey() string {
+        switch r.Mode {
+        case ManagedResourceMode:
+                return fmt.Sprintf("%s.%s", r.Type, r.Name)
+        case DataResourceMode:
+                return fmt.Sprintf("data.%s.%s", r.Type, r.Name)
+        default:
+                // should never happen
+                return fmt.Sprintf("[invalid_mode!].%s.%s", r.Type, r.Name)
+        }
+}
+
+// ResourceMode represents the "mode" of a resource, which is used to
+// distinguish between managed resources ("resource" blocks in config) and
+// data resources ("data" blocks in config).
+type ResourceMode rune
+
+const InvalidResourceMode ResourceMode = 0
+const ManagedResourceMode ResourceMode = 'M'
+const DataResourceMode ResourceMode = 'D'
+
+func (m ResourceMode) String() string {
+        switch m {
+        case ManagedResourceMode:
+                return "managed"
+        case DataResourceMode:
+                return "data"
+        default:
+                return ""
+        }
+}
+
+// MarshalJSON implements encoding/json.Marshaler.
+func (m ResourceMode) MarshalJSON() ([]byte, error) {
+        return []byte(strconv.Quote(m.String())), nil
+}
+
+func resourceTypeDefaultProviderName(typeName string) string {
+        if underPos := strings.IndexByte(typeName, '_'); underPos != -1 {
+                return typeName[:underPos]
+        }
+        return typeName
+}
diff --git a/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/schema.go b/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/schema.go
new file mode 100644
index 0000000..3af742f
--- /dev/null
+++ b/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/schema.go
@@ -0,0 +1,106 @@
+package tfconfig
+
+import (
+        "github.com/hashicorp/hcl2/hcl"
+)
+
+var rootSchema = &hcl.BodySchema{
+        Blocks: []hcl.BlockHeaderSchema{
+                {
+                        Type:       "terraform",
+                        LabelNames: nil,
+                },
+                {
+                        Type:       "variable",
+                        LabelNames: []string{"name"},
+                },
+                {
+                        Type:       "output",
+                        LabelNames: []string{"name"},
+                },
+                {
+                        Type:       "provider",
+                        LabelNames: []string{"name"},
+                },
+                {
+                        Type:       "resource",
+                        LabelNames: []string{"type", "name"},
+                },
+                {
+                        Type:       "data",
+                        LabelNames: []string{"type", "name"},
+                },
+                {
+                        Type:       "module",
+                        LabelNames: []string{"name"},
+                },
+        },
+}
+
+var terraformBlockSchema = &hcl.BodySchema{
+        Attributes: []hcl.AttributeSchema{
+                {
+                        Name: "required_version",
+                },
+        },
+        Blocks: []hcl.BlockHeaderSchema{
+                {
+                        Type: "required_providers",
+                },
+        },
+}
+
+var providerConfigSchema = &hcl.BodySchema{
+        Attributes: []hcl.AttributeSchema{
+                {
+                        Name: "version",
+                },
+                {
+                        Name: "alias",
+                },
+        },
+}
+
+var variableSchema = &hcl.BodySchema{
+        Attributes: []hcl.AttributeSchema{
+                {
+                        Name: "type",
+                },
+                {
+                        Name: "description",
+                },
+                {
+                        Name: "default",
+                },
+        },
+}
+
+var outputSchema = &hcl.BodySchema{
+        Attributes: []hcl.AttributeSchema{
+                {
+                        Name: "description",
+                },
+        },
+}
+
+var moduleCallSchema = &hcl.BodySchema{
+        Attributes: []hcl.AttributeSchema{
+                {
+                        Name: "source",
+                },
+                {
+                        Name: "version",
+                },
+                {
+                        Name: "providers",
+                },
+        },
+}
+
+var resourceSchema = &hcl.BodySchema{
+        Attributes: []hcl.AttributeSchema{
+                {
+                        Name: "provider",
+                },
+        },
+}
diff --git a/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/source_pos.go b/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/source_pos.go
new file mode 100644
index 0000000..883914e
--- /dev/null
+++ b/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/source_pos.go
@@ -0,0 +1,50 @@
+package tfconfig
+
+import (
+        legacyhcltoken "github.com/hashicorp/hcl/hcl/token"
+        "github.com/hashicorp/hcl2/hcl"
+)
+
+// SourcePos is a pointer to a particular location in a source file.
+//
+// This type is embedded into other structs to allow callers to locate the
+// definition of each described module element. The SourcePos of an element
+// is usually the first line of its definition, although the definition can
+// be a little "fuzzy" with JSON-based config files.
+type SourcePos struct {
+        Filename string `json:"filename"`
+        Line     int    `json:"line"`
+}
+
+func sourcePos(filename string, line int) SourcePos {
+        return SourcePos{
+                Filename: filename,
+                Line:     line,
+        }
+}
+
+func sourcePosHCL(rng hcl.Range) SourcePos {
+        // We intentionally throw away the column information here because
+        // current and legacy HCL both disagree on the definition of a column
+        // and so a line-only reference is the best granularity we can do
+        // such that the result is consistent between both parsers.
+        return SourcePos{
+                Filename: rng.Filename,
+                Line:     rng.Start.Line,
+        }
+}
+
+func sourcePosLegacyHCL(pos legacyhcltoken.Pos, filename string) SourcePos {
+        useFilename := pos.Filename
+        // We'll try to use the filename given in legacy HCL position, but
+        // in practice there's no way to actually get this populated via
+        // the HCL API so it's usually empty except in some specialized
+        // situations, such as positions in error objects.
+        if useFilename == "" {
+                useFilename = filename
+        }
+        return SourcePos{
+                Filename: useFilename,
+                Line:     pos.Line,
+        }
+}
diff --git a/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/variable.go b/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/variable.go
new file mode 100644
index 0000000..0f73fc9
--- /dev/null
+++ b/vendor/github.com/hashicorp/terraform-config-inspect/tfconfig/variable.go
@@ -0,0 +1,16 @@
+package tfconfig
+
+// Variable represents a single variable from a Terraform module.
+type Variable struct {
+        Name        string `json:"name"`
+        Type        string `json:"type,omitempty"`
+        Description string `json:"description,omitempty"`
+
+        // Default is an approximate representation of the default value in
+        // the native Go type system. The conversion from the value given in
+        // configuration may be slightly lossy. Only values that can be
+        // serialized by json.Marshal will be included here.
+        Default interface{} `json:"default,omitempty"`
+
+        Pos SourcePos `json:"pos"`
+}