1 files changed, 86 insertions, 0 deletions
diff --git a/vendor/github.com/hashicorp/terraform/config/append.go b/vendor/github.com/hashicorp/terraform/config/append.go
new file mode 100644
index 00000000..5f4e89ee
--- /dev/null
+++ b/vendor/github.com/hashicorp/terraform/config/append.go
@@ -0,0 +1,86 @@
+package config
+
+// Append appends one configuration to another.
+//
+// Append assumes that both configurations will not have
+// conflicting variables, resources, etc. If they do, the
+// problems will be caught in the validation phase.
+//
+// It is possible that c1, c2 on their own are not valid. For
+// example, a resource in c2 may reference a variable in c1. But
+// together, they would be valid.
+func Append(c1, c2 *Config) (*Config, error) {
+	c := new(Config)
+
+	// Append unknown keys, but keep them unique since it is a set
+	unknowns := make(map[string]struct{})
+	for _, k := range c1.unknownKeys {
+		_, present := unknowns[k]
+		if !present {
+			unknowns[k] = struct{}{}
+			c.unknownKeys = append(c.unknownKeys, k)
+		}
+	}
+
+	for _, k := range c2.unknownKeys {
+		_, present := unknowns[k]
+		if !present {
+			unknowns[k] = struct{}{}
+			c.unknownKeys = append(c.unknownKeys, k)
+		}
+	}
+
+	c.Atlas = c1.Atlas
+	if c2.Atlas != nil {
+		c.Atlas = c2.Atlas
+	}
+
+	// merge Terraform blocks
+	if c1.Terraform != nil {
+		c.Terraform = c1.Terraform
+		if c2.Terraform != nil {
+			c.Terraform.Merge(c2.Terraform)
+		}
+	} else {
+		c.Terraform = c2.Terraform
+	}
+
+	if len(c1.Modules) > 0 || len(c2.Modules) > 0 {
+		c.Modules = make(
+			[]*Module, 0, len(c1.Modules)+len(c2.Modules))
+		c.Modules = append(c.Modules, c1.Modules...)
+		c.Modules = append(c.Modules, c2.Modules...)
+	}
+
+	if len(c1.Outputs) > 0 || len(c2.Outputs) > 0 {
+		c.Outputs = make(
+			[]*Output, 0, len(c1.Outputs)+len(c2.Outputs))
+		c.Outputs = append(c.Outputs, c1.Outputs...)
+		c.Outputs = append(c.Outputs, c2.Outputs...)
+	}
+
+	if len(c1.ProviderConfigs) > 0 || len(c2.ProviderConfigs) > 0 {
+		c.ProviderConfigs = make(
+			[]*ProviderConfig,
+			0, len(c1.ProviderConfigs)+len(c2.ProviderConfigs))
+		c.ProviderConfigs = append(c.ProviderConfigs, c1.ProviderConfigs...)
+		c.ProviderConfigs = append(c.ProviderConfigs, c2.ProviderConfigs...)
+	}
+
+	if len(c1.Resources) > 0 || len(c2.Resources) > 0 {
+		c.Resources = make(
+			[]*Resource,
+			0, len(c1.Resources)+len(c2.Resources))
+		c.Resources = append(c.Resources, c1.Resources...)
+		c.Resources = append(c.Resources, c2.Resources...)
+	}
+
+	if len(c1.Variables) > 0 || len(c2.Variables) > 0 {
+		c.Variables = make(
+			[]*Variable, 0, len(c1.Variables)+len(c2.Variables))
+		c.Variables = append(c.Variables, c1.Variables...)
+		c.Variables = append(c.Variables, c2.Variables...)
+	}
+
+	return c, nil
+}