unify grammar file

lib/parser/bosl.citrus

@@ -1,5 +1,5 @@
 
-grammar BasicTypes
+grammar Bosl
 
   # unicode generalized categories , according to regex ruby page
   rule lower  /[[:lower:]]/ end    # Lowercase alphabetical character
@@ -135,4 +135,107 @@ grammar BasicTypes
     '!' space*
   end
 
+  rule more_args
+    (comma basic_expression )* {
+      captures(:basic_expression).collect{|u| u.value }
+    }
+  end
+
+  rule argument_list
+    (left_parenthesis basic_expression? more_args right_parenthesis){
+        args = [ ]
+        args << capture(:basic_expression).value if capture(:basic_expression)
+        args += capture(:more_args).value if capture(:more_args)
+        args
+        }
+  end
+
+  rule call_site
+    (basic_expression "." name_expression  argument_list space?) {
+      Ast::CallSiteExpression.new(capture(:name_expression).to_str ,
+                          capture(:argument_list).value ,
+                          capture(:basic_expression).value )
+    }
+  end
+
+  rule value_expression
+    call_site | basic_expression
+  end
+
+  rule function_definition
+    keyword_def name:function_name  parameter_list  newline expressions_end  newline
+  end
+
+  rule parameter_list
+    left_parenthesis parameter_list:( name:parameter?  (comma name:parameter)* ) right_parenthesis
+  end
+
+  rule more_typed_args
+    (comma typed_arg )* {
+      captures(:typed_arg).collect{|u| u.value }
+    }
+  end
+
+  rule typed_argument_list
+    (left_parenthesis typed_arg? more_typed_args right_parenthesis){
+        args = [ ]
+        args << capture(:typed_arg).value if capture(:typed_arg)
+        args += capture(:more_typed_args).value if capture(:more_typed_args)
+        args
+        }
+  end
+
+  rule type
+    (typ:("int" | "ref") space*) { capture(:typ).to_s }
+  end
+
+  rule typed_arg
+    (type name_expression) {
+      Ast::TypedName.new(capture(:type).value , capture(:name_expression).value.name)
+    }
+  end
+
+  rule variable_definition
+    (typed_arg ("=" space* value_expression)?) {
+      type = capture(:typed_arg).value
+      value = capture(:value_expression) ? capture(:value_expression).value : nil
+      var = Ast::VariableDefinition.new(type.type , type.name ,  value)
+    }
+  end
+
+  rule assignment
+    (name_expression "=" space* value_expression){
+    Ast::AssignmentExpression.new( capture(:name_expression).value.name , capture(:value_expression).value)
+    }
+  end
+
+  rule conditional
+    (keyword_if left_parenthesis value_expression right_parenthesis
+    body
+    keyword_end)  {
+    Ast::IfExpression.new( capture(:value_expression).value  , capture(:body).value , nil)
+    }
+  end
+
+  rule while
+    keyword_while left_parenthesis value_expression right_parenthesis keyword_do
+    body
+    keyword_end
+  end
+
+  rule return
+    keyword_return value_expression newline
+  end
+
+  rule body
+    (statement+){
+      captures(:statement).collect{|u| u.value }
+    }
+  end
+
+  rule statement
+    conditional | while | return | variable_definition | assignment
+  end
+
+
 end

lib/parser/expression.citrus

@@ -1,40 +0,0 @@
-grammar Expression
-  include BasicTypes
-
-  rule more_args
-    (comma basic_expression )* {
-      captures(:basic_expression).collect{|u| u.value }
-    }
-  end
-
-  rule argument_list
-    (left_parenthesis basic_expression? more_args right_parenthesis){
-        args = [ ]
-        args << capture(:basic_expression).value if capture(:basic_expression)
-        args += capture(:more_args).value if capture(:more_args)
-        args
-        }
-  end
-
-  rule call_site
-    (basic_expression "." name_expression  argument_list space?) {
-      Ast::CallSiteExpression.new(capture(:name_expression).to_str ,
-                          capture(:argument_list).value ,
-                          capture(:basic_expression).value )
-    }
-  end
-
-  rule value_expression
-    call_site | basic_expression
-  end
-
-  rule function_definition
-    keyword_def name:function_name  parameter_list  newline expressions_end  newline
-  end
-
-  rule parameter_list
-    left_parenthesis parameter_list:( name:parameter?  (comma name:parameter)* ) right_parenthesis
-  end
-
-  root call_site
-end

lib/parser/function.citrus

@@ -1,37 +0,0 @@
-grammar Function
-  include Statement
-
-
-  rule more_typed_args
-    (comma typed_arg )* {
-      captures(:typed_arg).collect{|u| u.value }
-    }
-  end
-
-  rule typed_argument_list
-    (left_parenthesis typed_arg? more_typed_args right_parenthesis){
-        args = [ ]
-        args << capture(:typed_arg).value if capture(:typed_arg)
-        args += capture(:more_typed_args).value if capture(:more_typed_args)
-        args
-        }
-  end
-
-  rule call_site
-    (basic_expression "." name_expression  argument_list space?) {
-      Ast::CallSiteExpression.new(capture(:name_expression).to_str ,
-                          capture(:argument_list).value ,
-                          capture(:basic_expression).value )
-    }
-  end
-
-  rule function_definition
-    keyword_def name:function_name  parameter_list  newline expressions_end  newline
-  end
-
-  rule parameter_list
-    left_parenthesis parameter_list:( name:parameter?  (comma name:parameter)* ) right_parenthesis
-  end
-
-  root call_site
-end

lib/parser/salama.rb

@@ -5,8 +5,6 @@ module Parser
 
   # obviously a work in progress !!
 
-  Citrus.require "parser/basic"
-  Citrus.require "parser/expression"
-  Citrus.require "parser/statement"
+  Citrus.require "parser/bosl"
 
 end

lib/parser/statement.citrus

@@ -1,58 +0,0 @@
-grammar Statement
-  include Expression
-
-  rule type
-    (typ:("int" | "ref") space*) { capture(:typ).to_s }
-  end
-
-  rule typed_arg
-    (type name_expression) {
-      Ast::TypedName.new(capture(:type).value , capture(:name_expression).value.name)
-    }
-  end
-
-  rule variable_definition
-    (typed_arg ("=" space* value_expression)?) {
-      type = capture(:typed_arg).value
-      value = capture(:value_expression) ? capture(:value_expression).value : nil
-      var = Ast::VariableDefinition.new(type.type , type.name ,  value)
-    }
-  end
-
-  rule assignment
-    (name_expression "=" space* value_expression){
-    Ast::AssignmentExpression.new( capture(:name_expression).value.name , capture(:value_expression).value)
-    }
-  end
-
-  rule conditional
-    (keyword_if left_parenthesis value_expression right_parenthesis
-    body
-    keyword_end)  {
-    Ast::IfExpression.new( capture(:value_expression).value  , capture(:body).value , nil)
-    }
-  end
-
-  rule while
-    keyword_while left_parenthesis value_expression right_parenthesis keyword_do
-    body
-    keyword_end
-  end
-
-  rule return
-    keyword_return value_expression newline
-  end
-
-  rule body
-    (statement+){
-      captures(:statement).collect{|u| u.value }
-    }
-  end
-
-  rule statement
-    conditional | while | return | variable_definition | assignment
-  end
-
-  root statement
-
-end

test/parser_helper.rb

@@ -4,46 +4,16 @@ require_relative "setup"
 module ParserHelper
 
   def self.included(base)
-    base.send :include, InstanceMethods  #provides helpers and setup
-    base.send :extend, ClassMethods   #gets the method creation going
+#    base.send :include, InstanceMethods  #provides helpers and setup
   end
 
-  module InstanceMethods
   def setup
-      @parser = Keywords
+    @parser = Bosl
   end
 
-    # check that @input parses correctly to @input
-    def check_parse
-      is = @parser.parse(@input , :root => @root)
-      assert_equal @input , is
-    end
-
-    # check that @input parses and transforms to @output
-    def check_ast
-      syntax    = @parser.parse(@input , :root => @root)
-      #puts is.inspect
-      assert_equal @output , syntax.value
-    end
-  end
-
-  module ClassMethods
-    # this creates test methods dynamically. For each test_* method we create
-    # three test_*[ast/parse/transf] methods that in turn check the three phases.
-    # runnable_methods is called by minitest to determine which tests to run
-    def runnable_methods
-      tests = []
-      public_instance_methods(true).grep(/^test_/).map(&:to_s).each do |test|
-        ["ast" , "parse"].each do |what|
-          name = "#{test}_#{what}"
-          tests << name
-          self.send(:define_method, name ) do
-            send(test)
-            send("check_#{what}")
-          end
-        end
-      end
-      tests
-    end
+  def check rule = :root
+    parse    = @parser.parse(@input , :root => rule)
+    assert_equal @input , parse
+    assert_equal @output , parse.value
   end
 end

test/unit/test_basic.rb

@@ -1,16 +1,8 @@
-require_relative "../setup"
+require_relative "../parser_helper"
 
 class TestBasic < MiniTest::Test
   #test basics and keyword expressions. Keywords includes BasicTypes
-  def setup
-    @parser = BasicTypes
-  end
-
-  def check rule = :root
-    parse    = @parser.parse(@input , :root => rule)
-    assert_equal @input , parse
-    assert_equal @output , parse.value
-  end
+  include ParserHelper
 
   def test_true
     @input    = 'true  '

test/unit/test_call_site.rb

@@ -1,39 +1,31 @@
 require_relative "../parser_helper"
 
 class TestCallSite < MiniTest::Test
-
-  def setup
-    @parser = Expression
-  end
-  def check
-    parse    = @parser.parse(@input)
-    assert_equal @input , parse
-    assert_equal @output , parse.value
-  end
+  include ParserHelper
 
   def test_single_self
     @input = 'self.foo(42)'
     @output = Ast::CallSiteExpression.new :foo, [Ast::IntegerExpression.new(42)]
-    check
+    check :call_site
   end
 
   def test_single_name
     @input = 'my_my.foo(42)'
     @parse_output = {:receiver=>{:name=>"my_my"}, :call_site=>{:name=>"foo"}, :argument_list=>[{:argument=>{:integer=>"42"}}]}
     @output = Ast::CallSiteExpression.new(:foo, [Ast::IntegerExpression.new(42)] ,Ast::NameExpression.new("my_my"))
-    check
+    check :call_site
   end
 
   def test_int_receiver
     @input = '42.put()'
     @output = Ast::CallSiteExpression.new(:put, [] ,Ast::IntegerExpression.new(42))
-    check
+    check :call_site
   end
 
   def test_string_receiver
     @input = '"hello".puts()'
     @output = Ast::CallSiteExpression.new(:puts, [] ,Ast::StringExpression.new("hello"))
-    check
+    check :call_site
   end
 
   def test_call_site_2
@@ -41,7 +33,7 @@ class TestCallSite < MiniTest::Test
     @output = Ast::CallSiteExpression.new :baz,
                            [Ast::IntegerExpression.new(42), Ast::NameExpression.new("foo") ] ,
                            Ast::NameExpression.new(:self)
-    check
+    check :call_site
   end
 
   def test_call_site_3
@@ -51,7 +43,7 @@ class TestCallSite < MiniTest::Test
                                Ast::NameExpression.new("foo") ,
                                Ast::NameExpression.new("bar")] ,
                            Ast::NameExpression.new(:self)
-    check
+    check :call_site
   end
 
 end

test/unit/test_conditional.rb

@@ -1,33 +1,24 @@
 require_relative "../parser_helper"
 
 class TestConditional < MiniTest::Test
-
-  def setup
-    @parser = Statement
-  end
-
-  def check
-    parse    = @parser.parse(@input)
-    assert_equal @input , parse
-    assert_equal @output , parse.value
-  end
+  include ParserHelper
 
   def test_assignment
     @input = "myvar = 42"
     @output = Ast::AssignmentExpression.new(:myvar,Ast::IntegerExpression.new(42))
-    check
+    check :assignment
   end
 
   def test_variable_declaration
     @input = "int myvar"
     @output = Ast::VariableDefinition.new(:int,:myvar,nil)
-    check
+    check :variable_definition
   end
 
   def test_variable_declaration_value
     @input = "int myvar = 42"
     @output = Ast::VariableDefinition.new(:int,:myvar,Ast::IntegerExpression.new(42))
-    check
+    check :variable_definition
   end
 
   def test_if
@@ -37,7 +28,7 @@ if( 1 )
 end
 HERE
     @output = Ast::IfExpression.new(Ast::IntegerExpression.new(1), [Ast::VariableDefinition.new(:int,:num,Ast::IntegerExpression.new(42))],nil )
-    check
+    check :conditional
   end
 
   def ttest_conditional_with_calls