From cb93670a58c7e76f6d28782dbcd444d59236c2fa Mon Sep 17 00:00:00 2001
From: Bilal Catic <bilal.catic@hotmail.com>
Date: Thu, 23 Jan 2020 19:16:16 +0100
Subject: [PATCH] setup files for parser part

---
 .gitignore                |  3 ++-
 README.md                 | 10 +++++++---
 Rakefile                  | 14 +++++++++++---
 grammar.y                 |  9 +++++++++
 spec/query_parser_spec.rb |  9 +++++++++
 5 files changed, 38 insertions(+), 7 deletions(-)
 create mode 100644 grammar.y
 create mode 100644 spec/query_parser_spec.rb

diff --git a/.gitignore b/.gitignore
index 837c184..c8d090a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 .idea
 
-lexer.rb
\ No newline at end of file
+lexer.rb
+parser.rb
\ No newline at end of file
diff --git a/README.md b/README.md
index 3123cb2..2eae07a 100644
--- a/README.md
+++ b/README.md
@@ -1,15 +1,19 @@
 # parser
 
-###Prerequisites
+### Prerequisites
 
 * Rexical (rex) 
+* Racc
 
-###Available commands
+### Available commands
 
 * `rake lexer` - generates `lexer.rb` file based on `specification.rex` file
+* `rake parser` - generates `parser.rb` file based on `grammar.y` file
+* `rake generate` - generates `lexer.rb` and `parser.rb` files
 
-###Testing
+### Testing
 
 To run only `lexer` tests, execute : `rspec spec/query_lexer_spec.rb`
+To run only `parser` tests, execute : `rspec spec/query_parser_spec.rb`
 
 To run all tests, execute : `rake spec`
\ No newline at end of file
diff --git a/Rakefile b/Rakefile
index b63d98d..92064f7 100644
--- a/Rakefile
+++ b/Rakefile
@@ -2,11 +2,19 @@ require 'rspec/core/rake_task'
 
 RSpec::Core::RakeTask.new do |c|
   options = ['--color']
-  options += ["--format", "documentation"]
+  options += %w[--format documentation]
   c.rspec_opts = options
 end
 
-desc "Generate Lexer"
+desc 'Generate Lexer'
 task :lexer do
   `rex specification.rex -o lexer.rb`
-end
\ No newline at end of file
+end
+
+desc 'Generate Parser'
+task :parser do
+  `racc grammar.y -o parser.rb`
+end
+
+desc 'Generate Lexer and Parser'
+task generate: %i[lexer parser]
\ No newline at end of file
diff --git a/grammar.y b/grammar.y
new file mode 100644
index 0000000..72d6f25
--- /dev/null
+++ b/grammar.y
@@ -0,0 +1,9 @@
+class Query
+    rule
+        expression:
+end
+
+---- inner
+  def parse(input)
+    scan_str(input)
+  end
\ No newline at end of file
diff --git a/spec/query_parser_spec.rb b/spec/query_parser_spec.rb
new file mode 100644
index 0000000..a314de2
--- /dev/null
+++ b/spec/query_parser_spec.rb
@@ -0,0 +1,9 @@
+require './parser'
+
+class QueryParserTester
+  describe 'Testing the Parser' do
+    before do
+      @evaluator = Query.new
+    end
+  end
+end