add instance variables and module name as basic types (as name was there already) and add tests

lib/parser/basic_types.rb

@@ -28,7 +28,7 @@ module Parser
     # TODO rule forbit names like if_true, because it starts with a keyword. a little looser please!
     rule(:name)   { keyword.absent? >> (match['a-z_'] >> match['a-zA-Z0-9_'].repeat).as(:name)  >> space? }
     # instance variables must have the @
-    rule(:instance_variable) { (match('@') >> name).as(:instance_variable) }
+    rule(:instance_variable) { (str('@') >> name).as(:instance_variable) }
     # and class/module names must start with capital 
     # (admittatly the rule matches constants too, but one step at a time)
     rule(:module_name) { keyword.absent? >> (match['A-Z'] >> match['a-zA-Z0-9_'].repeat).as(:module_name)  >> space? }
@@ -43,6 +43,6 @@ module Parser
     
     rule(:float) { integer >>  dot >> integer >> 
                             (exponent >> sign.maybe >> digit.repeat(1,3)).maybe >> space?}
-    rule(:basic_type){ integer | name | string | float }
+    rule(:basic_type){ integer | name | string | float | instance_variable | module_name }
   end
 end

test/parser/test_class.rb

@@ -19,13 +19,13 @@ HERE
     @string_input    = <<HERE
 class Opers
   def foo(x)
-    abba = 5 
+    @abba = 5 
     2 + 5
   end
 end
 HERE
-    @parse_output = {:module_name=>"Opers", :class_expressions=>[{:function_name=>{:name=>"foo"}, :parmeter_list=>[{:parmeter=>{:name=>"x"}}], :expressions=>[{:l=>{:name=>"abba"}, :o=>"= ", :r=>{:integer=>"5"}}, {:l=>{:integer=>"2"}, :o=>"+ ", :r=>{:integer=>"5"}}], :end=>"end"}], :end=>"end"}
+    @parse_output = {:module_name=>"Opers", :class_expressions=>[{:function_name=>{:name=>"foo"}, :parmeter_list=>[{:parmeter=>{:name=>"x"}}], :expressions=>[{:l=>{:instance_variable=>{:name=>"abba"}}, :o=>"= ", :r=>{:integer=>"5"}}, {:l=>{:integer=>"2"}, :o=>"+ ", :r=>{:integer=>"5"}}], :end=>"end"}], :end=>"end"}
-    @transform_output = Ast::ClassExpression.new(:Opers ,[Ast::FunctionExpression.new(:foo, [Ast::NameExpression.new("x")] , [Ast::OperatorExpression.new("=", Ast::NameExpression.new("abba"),Ast::IntegerExpression.new(5)),Ast::OperatorExpression.new("+", Ast::IntegerExpression.new(2),Ast::IntegerExpression.new(5))] )] )
+    @transform_output = Ast::ClassExpression.new(:Opers ,[Ast::FunctionExpression.new(:foo, [Ast::NameExpression.new("x")] , [Ast::OperatorExpression.new("=", Ast::VariableExpression.new("abba"),Ast::IntegerExpression.new(5)),Ast::OperatorExpression.new("+", Ast::IntegerExpression.new(2),Ast::IntegerExpression.new(5))] )] )
     @parser = @parser.class_definition
   end
 

test/parser/test_module.rb

@@ -19,7 +19,7 @@ HERE
     @string_input    = <<HERE
 module Opers
   def foo(x)
-    abba = 5 
+    abba = 5
     2 + 5
   end
 end
@@ -29,6 +29,17 @@ HERE
     @parser = @parser.module_definition
   end
 
+  def test_module_assign_instance
+    @string_input    = <<HERE
+module Opers
+  @abba = 5
+end
+HERE
+    @parse_output = {:module_name=>"Opers", :module_expressions=>[{:l=>{:instance_variable=>{:name=>"abba"}}, :o=>"= ", :r=>{:integer=>"5"}}], :end=>"end"}
+    @transform_output = Ast::ModuleExpression.new(:Opers ,[Ast::OperatorExpression.new("=", Ast::VariableExpression.new("abba"),Ast::IntegerExpression.new(5))] )
+    @parser = @parser.module_definition
+  end
+
   def test_module_if
     @string_input    = <<HERE
 module Foo

test/parser/test_operators.rb

@@ -40,6 +40,12 @@ class TestExpressions < MiniTest::Test
     @transform_output = Ast::OperatorExpression.new("-", Ast::NameExpression.new("a"),Ast::NameExpression.new("b"))
     @parser = @parser.operator_expression
   end
+  def test_op_instance_variable
+    @string_input    = "@a - 5"
+    @parse_output = {:l=>{:instance_variable=>{:name=>"a"}}, :o=>"- ", :r=>{:integer=>"5"}}
+    @transform_output = Ast::OperatorExpression.new("-", Ast::VariableExpression.new("a"),Ast::IntegerExpression.new(5))
+    @parser = @parser.operator_expression
+  end
   def test_op_variable_string
     @string_input    = 'a - "st"'
     @parse_output = {:l=>{:name=>"a"}, :o=>"- ", :r=>{:string=>[{:char=>"s"}, {:char=>"t"}]}}
@@ -70,5 +76,11 @@ class TestExpressions < MiniTest::Test
     @transform_output = Ast::OperatorExpression.new("=", Ast::NameExpression.new("a"),Ast::IntegerExpression.new(5))
     @parser = @parser.operator_expression
   end
+  def test_assignment_instance
+    @string_input    = "@a = 5"
+    @parse_output = {:l=>{:instance_variable=>{:name=>"a"}}, :o=>"= ", :r=>{:integer=>"5"}}
+    @transform_output = Ast::OperatorExpression.new("=", Ast::VariableExpression.new("a"),Ast::IntegerExpression.new(5))
+    @parser = @parser.operator_expression
+  end
 
 end