1 files changed, 247 insertions, 0 deletions

diff --git a/vendor/github.com/hashicorp/terraform/configs/parser_config.go b/vendor/github.com/hashicorp/terraform/configs/parser_config.go
new file mode 100644
index 0000000..7f2ff27
--- /dev/null
+++ b/vendor/github.com/hashicorp/terraform/configs/parser_config.go
@@ -0,0 +1,247 @@
+package configs
+
+import (
+        "github.com/hashicorp/hcl2/hcl"
+)
+
+// LoadConfigFile reads the file at the given path and parses it as a config
+// file.
+//
+// If the file cannot be read -- for example, if it does not exist -- then
+// a nil *File will be returned along with error diagnostics. Callers may wish
+// to disregard the returned diagnostics in this case and instead generate
+// their own error message(s) with additional context.
+//
+// If the returned diagnostics has errors when a non-nil map is returned
+// then the map may be incomplete but should be valid enough for careful
+// static analysis.
+//
+// This method wraps LoadHCLFile, and so it inherits the syntax selection
+// behaviors documented for that method.
+func (p *Parser) LoadConfigFile(path string) (*File, hcl.Diagnostics) {
+        return p.loadConfigFile(path, false)
+}
+
+// LoadConfigFileOverride is the same as LoadConfigFile except that it relaxes
+// certain required attribute constraints in order to interpret the given
+// file as an overrides file.
+func (p *Parser) LoadConfigFileOverride(path string) (*File, hcl.Diagnostics) {
+        return p.loadConfigFile(path, true)
+}
+
+func (p *Parser) loadConfigFile(path string, override bool) (*File, hcl.Diagnostics) {
+
+        body, diags := p.LoadHCLFile(path)
+        if body == nil {
+                return nil, diags
+        }
+
+        file := &File{}
+
+        var reqDiags hcl.Diagnostics
+        file.CoreVersionConstraints, reqDiags = sniffCoreVersionRequirements(body)
+        diags = append(diags, reqDiags...)
+
+        content, contentDiags := body.Content(configFileSchema)
+        diags = append(diags, contentDiags...)
+
+        for _, block := range content.Blocks {
+                switch block.Type {
+
+                case "terraform":
+                        content, contentDiags := block.Body.Content(terraformBlockSchema)
+                        diags = append(diags, contentDiags...)
+
+                        // We ignore the "terraform_version" attribute here because
+                        // sniffCoreVersionRequirements already dealt with that above.
+
+                        for _, innerBlock := range content.Blocks {
+                                switch innerBlock.Type {
+
+                                case "backend":
+                                        backendCfg, cfgDiags := decodeBackendBlock(innerBlock)
+                                        diags = append(diags, cfgDiags...)
+                                        if backendCfg != nil {
+                                                file.Backends = append(file.Backends, backendCfg)
+                                        }
+
+                                case "required_providers":
+                                        reqs, reqsDiags := decodeRequiredProvidersBlock(innerBlock)
+                                        diags = append(diags, reqsDiags...)
+                                        file.ProviderRequirements = append(file.ProviderRequirements, reqs...)
+
+                                default:
+                                        // Should never happen because the above cases should be exhaustive
+                                        // for all block type names in our schema.
+                                        continue
+
+                                }
+                        }
+
+                case "provider":
+                        cfg, cfgDiags := decodeProviderBlock(block)
+                        diags = append(diags, cfgDiags...)
+                        if cfg != nil {
+                                file.ProviderConfigs = append(file.ProviderConfigs, cfg)
+                        }
+
+                case "variable":
+                        cfg, cfgDiags := decodeVariableBlock(block, override)
+                        diags = append(diags, cfgDiags...)
+                        if cfg != nil {
+                                file.Variables = append(file.Variables, cfg)
+                        }
+
+                case "locals":
+                        defs, defsDiags := decodeLocalsBlock(block)
+                        diags = append(diags, defsDiags...)
+                        file.Locals = append(file.Locals, defs...)
+
+                case "output":
+                        cfg, cfgDiags := decodeOutputBlock(block, override)
+                        diags = append(diags, cfgDiags...)
+                        if cfg != nil {
+                                file.Outputs = append(file.Outputs, cfg)
+                        }
+
+                case "module":
+                        cfg, cfgDiags := decodeModuleBlock(block, override)
+                        diags = append(diags, cfgDiags...)
+                        if cfg != nil {
+                                file.ModuleCalls = append(file.ModuleCalls, cfg)
+                        }
+
+                case "resource":
+                        cfg, cfgDiags := decodeResourceBlock(block)
+                        diags = append(diags, cfgDiags...)
+                        if cfg != nil {
+                                file.ManagedResources = append(file.ManagedResources, cfg)
+                        }
+
+                case "data":
+                        cfg, cfgDiags := decodeDataBlock(block)
+                        diags = append(diags, cfgDiags...)
+                        if cfg != nil {
+                                file.DataResources = append(file.DataResources, cfg)
+                        }
+
+                default:
+                        // Should never happen because the above cases should be exhaustive
+                        // for all block type names in our schema.
+                        continue
+
+                }
+        }
+
+        return file, diags
+}
+
+// sniffCoreVersionRequirements does minimal parsing of the given body for
+// "terraform" blocks with "required_version" attributes, returning the
+// requirements found.
+//
+// This is intended to maximize the chance that we'll be able to read the
+// requirements (syntax errors notwithstanding) even if the config file contains
+// constructs that might've been added in future Terraform versions
+//
+// This is a "best effort" sort of method which will return constraints it is
+// able to find, but may return no constraints at all if the given body is
+// so invalid that it cannot be decoded at all.
+func sniffCoreVersionRequirements(body hcl.Body) ([]VersionConstraint, hcl.Diagnostics) {
+        rootContent, _, diags := body.PartialContent(configFileVersionSniffRootSchema)
+
+        var constraints []VersionConstraint
+
+        for _, block := range rootContent.Blocks {
+                content, _, blockDiags := block.Body.PartialContent(configFileVersionSniffBlockSchema)
+                diags = append(diags, blockDiags...)
+
+                attr, exists := content.Attributes["required_version"]
+                if !exists {
+                        continue
+                }
+
+                constraint, constraintDiags := decodeVersionConstraint(attr)
+                diags = append(diags, constraintDiags...)
+                if !constraintDiags.HasErrors() {
+                        constraints = append(constraints, constraint)
+                }
+        }
+
+        return constraints, diags
+}
+
+// configFileSchema is the schema for the top-level of a config file. We use
+// the low-level HCL API for this level so we can easily deal with each
+// block type separately with its own decoding logic.
+var configFileSchema = &hcl.BodySchema{
+        Blocks: []hcl.BlockHeaderSchema{
+                {
+                        Type: "terraform",
+                },
+                {
+                        Type:       "provider",
+                        LabelNames: []string{"name"},
+                },
+                {
+                        Type:       "variable",
+                        LabelNames: []string{"name"},
+                },
+                {
+                        Type: "locals",
+                },
+                {
+                        Type:       "output",
+                        LabelNames: []string{"name"},
+                },
+                {
+                        Type:       "module",
+                        LabelNames: []string{"name"},
+                },
+                {
+                        Type:       "resource",
+                        LabelNames: []string{"type", "name"},
+                },
+                {
+                        Type:       "data",
+                        LabelNames: []string{"type", "name"},
+                },
+        },
+}
+
+// terraformBlockSchema is the schema for a top-level "terraform" block in
+// a configuration file.
+var terraformBlockSchema = &hcl.BodySchema{
+        Attributes: []hcl.AttributeSchema{
+                {
+                        Name: "required_version",
+                },
+        },
+        Blocks: []hcl.BlockHeaderSchema{
+                {
+                        Type:       "backend",
+                        LabelNames: []string{"type"},
+                },
+                {
+                        Type: "required_providers",
+                },
+        },
+}
+
+// configFileVersionSniffRootSchema is a schema for sniffCoreVersionRequirements
+var configFileVersionSniffRootSchema = &hcl.BodySchema{
+        Blocks: []hcl.BlockHeaderSchema{
+                {
+                        Type: "terraform",
+                },
+        },
+}
+
+// configFileVersionSniffBlockSchema is a schema for sniffCoreVersionRequirements
+var configFileVersionSniffBlockSchema = &hcl.BodySchema{
+        Attributes: []hcl.AttributeSchema{
+                {
+                        Name: "required_version",
+                },
+        },
+}