feat: parse provider name from provider block

1 files changed, 59 insertions, 0 deletions

diff --git a/lib/spandx/terraform/parsers/parse_tree.rb b/lib/spandx/terraform/parsers/parse_tree.rb
new file mode 100644
index 0000000..646baa5
--- /dev/null
+++ b/lib/spandx/terraform/parsers/parse_tree.rb
@@ -0,0 +1,59 @@
+# frozen_string_literal: true
+
+module Spandx
+  module Terraform
+    module Parsers
+      class ParseTree < Parslet::Parser
+        rule :crlf do
+          match('[\r\n]')
+        end
+
+        rule :eol do
+          whitespace? >> crlf.repeat(1)
+        end
+
+        rule :whitespace? do
+          whitespace.maybe
+        end
+
+        rule :whitespace do
+          match('[ ]').repeat
+        end
+
+        rule :anything do
+          match('.').repeat
+        end
+
+        rule :attribute_name do
+          match('[a-z]').repeat
+        end
+
+        rule :assignment do
+          whitespace? >> attribute_name >> whitespace >> str('=') >> whitespace >> str("=") >> whitespace >> match('[0-9A-Za-z.~> ]') >> str('"') >> eol
+        end
+
+        rule :assignments do
+          assignment.repeat
+        end
+
+        rule :block do
+          whitespace >> str("{") >> eol >> assignments >> str("}") >> eol
+        end
+
+        rule :identifier do
+          whitespace >> str('"') >> match('[a-zA-Z./]').repeat.as(:name) >> str('"') >> whitespace
+        end
+
+        rule :provider do
+          (str("provider") >> identifier >> block).as(:provider)
+        end
+
+        rule :providers do
+          provider.repeat
+        end
+
+        root(:providers)
+      end
+    end
+  end
+end