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wrapping root array as class ExpressionList

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This commit is contained in:
Torsten Ruger 2014-06-25 22:45:09 +03:00
parent 0ed11b507f
commit 7e1c0d7f57
6 changed files with 38 additions and 16 deletions
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2
Gemfile.lock
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@ -32,7 +32,7 @@ GEM
jwt (1.0.0)
mini_portile (0.6.0)
minitest (5.3.2)
multi_json (1.9.2)
multi_json (1.10.1)
multi_xml (0.5.5)
multipart-post (2.0.0)
nokogiri (1.6.2.1)

1
lib/ast/expression.rb
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@ -35,3 +35,4 @@ require_relative "module_expression"
require_relative "operator_expressions"
require_relative "return_expression"
require_relative "while_expression"
require_relative "expression_list"

18
lib/ast/expression_list.rb Normal file
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@ -0,0 +1,18 @@
module Ast
class ExpressionList < Expression
attr_reader :expressions
def initialize expressions
@expressions = expressions
end
def attributes
[:expressions]
end
def inspect
self.class.name + ".new( ["+ expressions.collect(&:inspect).join( ",") +"])"
end
def to_s
expressions.collect(&:inspect).join("\n")
end
end
end

2
lib/parser/crystal.rb
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@ -32,6 +32,6 @@ module Parser
include ModuleDef
rule(:root_body) {(module_definition | class_definition | function_definition | expression | call_site )}
rule(:root) { root_body.repeat() }
rule(:root) { root_body.repeat.as(:expression_list) }
end
end

3
lib/parser/transform.rb
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@ -81,6 +81,9 @@ module Parser
Ast::ClassExpression.new(module_name , derived_name ? derived_name.name : nil , class_expressions)
end
rule(:expression_list => sequence(:expression_list)) {
Ast::ExpressionList.new(expression_list)
}
#shortcut to get the ast tree for a given string
# optional second arguement specifies a rule that will be parsed (mainly for testing)
def self.ast string , rule = :root

28
test/test_root.rb
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@ -12,8 +12,8 @@ end
foo( 3 )
HERE
@parse_output = [{:function_name=>{:name=>"foo"}, :parameter_list=>[{:parameter=>{:name=>"x"}}], :expressions=>[{:l=>{:name=>"a"}, :o=>"= ", :r=>{:integer=>"5"}}], :end=>"end"}, {:call_site=>{:name=>"foo"}, :argument_list=>[{:argument=>{:integer=>"3"}}]}]
@transform_output = [Ast::FunctionExpression.new(:foo, [Ast::NameExpression.new(:x)] , [Ast::AssignmentExpression.new(Ast::NameExpression.new(:a),Ast::IntegerExpression.new(5))] ,nil ), Ast::CallSiteExpression.new(:foo, [Ast::IntegerExpression.new(3)] ,Ast::NameExpression.new(:self))]
@parse_output = {:expression_list=>[{:function_name=>{:name=>"foo"}, :parameter_list=>[{:parameter=>{:name=>"x"}}], :expressions=>[{:l=>{:name=>"a"}, :o=>"= ", :r=>{:integer=>"5"}}], :end=>"end"}, {:call_site=>{:name=>"foo"}, :argument_list=>[{:argument=>{:integer=>"3"}}]}]}
@transform_output = Ast::ExpressionList.new( [Ast::FunctionExpression.new(:foo, [Ast::NameExpression.new(:x)] , [Ast::AssignmentExpression.new(Ast::NameExpression.new(:a),Ast::IntegerExpression.new(5))] ,nil ),Ast::CallSiteExpression.new(:foo, [Ast::IntegerExpression.new(3)] ,Ast::NameExpression.new(:self))])
end
def test_comments
@ -31,8 +31,8 @@ def foo(x) #here
end #anywhere
foo( 3 ) #and more
HERE
@parse_output = [{:function_name=>{:name=>"foo"}, :parameter_list=>[{:parameter=>{:name=>"x"}}], :expressions=>[{:l=>{:name=>"a"}, :o=>"= ", :r=>{:integer=>"0"}}, {:l=>{:name=>"b"}, :o=>"= ", :r=>{:integer=>"1"}}, {:while=>"while", :while_cond=>{:l=>{:name=>"n"}, :o=>"<", :r=>{:integer=>"1"}}, :do=>"do", :body=>{:expressions=>[{:l=>{:name=>"tmp"}, :o=>"= ", :r=>{:name=>"a"}}, {:l=>{:name=>"a"}, :o=>"= ", :r=>{:name=>"b"}}, {:l=>{:name=>"b"}, :o=>"= ", :r=>{:l=>{:name=>"tmp"}, :o=>"+ ", :r=>{:name=>"b"}}}, {:call_site=>{:name=>"putstring"}, :argument_list=>[{:argument=>{:name=>"b"}}]}, {:l=>{:name=>"n"}, :o=>"= ", :r=>{:l=>{:name=>"n"}, :o=>"- ", :r=>{:integer=>"1"}}}], :end=>"end"}}], :end=>"end"}, {:call_site=>{:name=>"foo"}, :argument_list=>[{:argument=>{:integer=>"3"}}]}]
@transform_output = [Ast::FunctionExpression.new(:foo, [Ast::NameExpression.new(:x)] , [Ast::AssignmentExpression.new(Ast::NameExpression.new(:a),Ast::IntegerExpression.new(0)),Ast::AssignmentExpression.new(Ast::NameExpression.new(:b),Ast::IntegerExpression.new(1)),Ast::WhileExpression.new(Ast::OperatorExpression.new("<", Ast::NameExpression.new(:n),Ast::IntegerExpression.new(1)), [Ast::AssignmentExpression.new(Ast::NameExpression.new(:tmp),Ast::NameExpression.new(:a)), Ast::AssignmentExpression.new(Ast::NameExpression.new(:a),Ast::NameExpression.new(:b)), Ast::AssignmentExpression.new(Ast::NameExpression.new(:b),Ast::OperatorExpression.new("+", Ast::NameExpression.new(:tmp),Ast::NameExpression.new(:b))), Ast::CallSiteExpression.new(:putstring, [Ast::NameExpression.new(:b)] ,Ast::NameExpression.new(:self)), Ast::AssignmentExpression.new(Ast::NameExpression.new(:n),Ast::OperatorExpression.new("-", Ast::NameExpression.new(:n),Ast::IntegerExpression.new(1)))] )] ,nil ), Ast::CallSiteExpression.new(:foo, [Ast::IntegerExpression.new(3)] ,Ast::NameExpression.new(:self))]
@parse_output = {:expression_list=>[{:function_name=>{:name=>"foo"}, :parameter_list=>[{:parameter=>{:name=>"x"}}], :expressions=>[{:l=>{:name=>"a"}, :o=>"= ", :r=>{:integer=>"0"}}, {:l=>{:name=>"b"}, :o=>"= ", :r=>{:integer=>"1"}}, {:while=>"while", :while_cond=>{:l=>{:name=>"n"}, :o=>"<", :r=>{:integer=>"1"}}, :do=>"do", :body=>{:expressions=>[{:l=>{:name=>"tmp"}, :o=>"= ", :r=>{:name=>"a"}}, {:l=>{:name=>"a"}, :o=>"= ", :r=>{:name=>"b"}}, {:l=>{:name=>"b"}, :o=>"= ", :r=>{:l=>{:name=>"tmp"}, :o=>"+ ", :r=>{:name=>"b"}}}, {:call_site=>{:name=>"putstring"}, :argument_list=>[{:argument=>{:name=>"b"}}]}, {:l=>{:name=>"n"}, :o=>"= ", :r=>{:l=>{:name=>"n"}, :o=>"- ", :r=>{:integer=>"1"}}}], :end=>"end"}}], :end=>"end"}, {:call_site=>{:name=>"foo"}, :argument_list=>[{:argument=>{:integer=>"3"}}]}]}
@transform_output = Ast::ExpressionList.new( [Ast::FunctionExpression.new(:foo, [Ast::NameExpression.new(:x)] , [Ast::AssignmentExpression.new(Ast::NameExpression.new(:a),Ast::IntegerExpression.new(0)),Ast::AssignmentExpression.new(Ast::NameExpression.new(:b),Ast::IntegerExpression.new(1)),Ast::WhileExpression.new(Ast::OperatorExpression.new("<", Ast::NameExpression.new(:n),Ast::IntegerExpression.new(1)), [Ast::AssignmentExpression.new(Ast::NameExpression.new(:tmp),Ast::NameExpression.new(:a)), Ast::AssignmentExpression.new(Ast::NameExpression.new(:a),Ast::NameExpression.new(:b)), Ast::AssignmentExpression.new(Ast::NameExpression.new(:b),Ast::OperatorExpression.new("+", Ast::NameExpression.new(:tmp),Ast::NameExpression.new(:b))), Ast::CallSiteExpression.new(:putstring, [Ast::NameExpression.new(:b)] ,Ast::NameExpression.new(:self)), Ast::AssignmentExpression.new(Ast::NameExpression.new(:n),Ast::OperatorExpression.new("-", Ast::NameExpression.new(:n),Ast::IntegerExpression.new(1)))] )] ,nil ),Ast::CallSiteExpression.new(:foo, [Ast::IntegerExpression.new(3)] ,Ast::NameExpression.new(:self))])
end
def test_fibo1
@ -51,8 +51,8 @@ end
fibonaccit( 10 )
HERE
@parse_output = [{:function_name=>{:name=>"fibonaccit"}, :parameter_list=>[{:parameter=>{:name=>"n"}}], :expressions=>[{:l=>{:name=>"a"}, :o=>"= ", :r=>{:integer=>"0"}}, {:l=>{:name=>"b"}, :o=>"= ", :r=>{:integer=>"1"}}, {:while=>"while", :while_cond=>{:l=>{:name=>"n"}, :o=>"> ", :r=>{:integer=>"1"}}, :do=>"do", :body=>{:expressions=>[{:l=>{:name=>"tmp"}, :o=>"= ", :r=>{:name=>"a"}}, {:l=>{:name=>"a"}, :o=>"= ", :r=>{:name=>"b"}}, {:l=>{:name=>"b"}, :o=>"= ", :r=>{:l=>{:name=>"tmp"}, :o=>"+ ", :r=>{:name=>"b"}}}, {:call_site=>{:name=>"puts"}, :argument_list=>[{:argument=>{:name=>"b"}}]}, {:l=>{:name=>"n"}, :o=>"= ", :r=>{:l=>{:name=>"n"}, :o=>"- ", :r=>{:integer=>"1"}}}], :end=>"end"}}], :end=>"end"}, {:call_site=>{:name=>"fibonaccit"}, :argument_list=>[{:argument=>{:integer=>"10"}}]}]
@transform_output = [Ast::FunctionExpression.new(:fibonaccit, [Ast::NameExpression.new(:n)] , [Ast::AssignmentExpression.new(Ast::NameExpression.new(:a),Ast::IntegerExpression.new(0)),Ast::AssignmentExpression.new(Ast::NameExpression.new(:b),Ast::IntegerExpression.new(1)),Ast::WhileExpression.new(Ast::OperatorExpression.new(">", Ast::NameExpression.new(:n),Ast::IntegerExpression.new(1)), [Ast::AssignmentExpression.new(Ast::NameExpression.new(:tmp),Ast::NameExpression.new(:a)), Ast::AssignmentExpression.new(Ast::NameExpression.new(:a),Ast::NameExpression.new(:b)), Ast::AssignmentExpression.new(Ast::NameExpression.new(:b),Ast::OperatorExpression.new("+", Ast::NameExpression.new(:tmp),Ast::NameExpression.new(:b))), Ast::CallSiteExpression.new(:puts, [Ast::NameExpression.new(:b)] ,Ast::NameExpression.new(:self)), Ast::AssignmentExpression.new(Ast::NameExpression.new(:n),Ast::OperatorExpression.new("-", Ast::NameExpression.new(:n),Ast::IntegerExpression.new(1)))] )] ,nil ), Ast::CallSiteExpression.new(:fibonaccit, [Ast::IntegerExpression.new(10)] ,Ast::NameExpression.new(:self))]
@parse_output = {:expression_list=>[{:function_name=>{:name=>"fibonaccit"}, :parameter_list=>[{:parameter=>{:name=>"n"}}], :expressions=>[{:l=>{:name=>"a"}, :o=>"= ", :r=>{:integer=>"0"}}, {:l=>{:name=>"b"}, :o=>"= ", :r=>{:integer=>"1"}}, {:while=>"while", :while_cond=>{:l=>{:name=>"n"}, :o=>"> ", :r=>{:integer=>"1"}}, :do=>"do", :body=>{:expressions=>[{:l=>{:name=>"tmp"}, :o=>"= ", :r=>{:name=>"a"}}, {:l=>{:name=>"a"}, :o=>"= ", :r=>{:name=>"b"}}, {:l=>{:name=>"b"}, :o=>"= ", :r=>{:l=>{:name=>"tmp"}, :o=>"+ ", :r=>{:name=>"b"}}}, {:call_site=>{:name=>"puts"}, :argument_list=>[{:argument=>{:name=>"b"}}]}, {:l=>{:name=>"n"}, :o=>"= ", :r=>{:l=>{:name=>"n"}, :o=>"- ", :r=>{:integer=>"1"}}}], :end=>"end"}}], :end=>"end"}, {:call_site=>{:name=>"fibonaccit"}, :argument_list=>[{:argument=>{:integer=>"10"}}]}]}
@transform_output = Ast::ExpressionList.new( [Ast::FunctionExpression.new(:fibonaccit, [Ast::NameExpression.new(:n)] , [Ast::AssignmentExpression.new(Ast::NameExpression.new(:a),Ast::IntegerExpression.new(0)),Ast::AssignmentExpression.new(Ast::NameExpression.new(:b),Ast::IntegerExpression.new(1)),Ast::WhileExpression.new(Ast::OperatorExpression.new(">", Ast::NameExpression.new(:n),Ast::IntegerExpression.new(1)), [Ast::AssignmentExpression.new(Ast::NameExpression.new(:tmp),Ast::NameExpression.new(:a)), Ast::AssignmentExpression.new(Ast::NameExpression.new(:a),Ast::NameExpression.new(:b)), Ast::AssignmentExpression.new(Ast::NameExpression.new(:b),Ast::OperatorExpression.new("+", Ast::NameExpression.new(:tmp),Ast::NameExpression.new(:b))), Ast::CallSiteExpression.new(:puts, [Ast::NameExpression.new(:b)] ,Ast::NameExpression.new(:self)), Ast::AssignmentExpression.new(Ast::NameExpression.new(:n),Ast::OperatorExpression.new("-", Ast::NameExpression.new(:n),Ast::IntegerExpression.new(1)))] )] ,nil ),Ast::CallSiteExpression.new(:fibonaccit, [Ast::IntegerExpression.new(10)] ,Ast::NameExpression.new(:self))])
end
def test_module_method
@ -66,8 +66,8 @@ module Fibo
end
HERE
@parse_output = [{:module_name=>"Fibo", :module_expressions=>[{:function_name=>{:name=>"fibonaccit"}, :parameter_list=>[{:parameter=>{:name=>"n"}}], :expressions=>[{:l=>{:name=>"a"}, :o=>"= ", :r=>{:integer=>"0"}}], :end=>"end"}, {:call_site=>{:name=>"fibonaccit"}, :argument_list=>[{:argument=>{:integer=>"10"}}]}], :end=>"end"}]
@transform_output = [Ast::ModuleExpression.new(:Fibo ,[Ast::FunctionExpression.new(:fibonaccit, [Ast::NameExpression.new(:n)] , [Ast::AssignmentExpression.new(Ast::NameExpression.new(:a),Ast::IntegerExpression.new(0))] ,nil ), Ast::CallSiteExpression.new(:fibonaccit, [Ast::IntegerExpression.new(10)] ,Ast::NameExpression.new(:self))] )]
@parse_output = {:expression_list=>[{:module_name=>"Fibo", :module_expressions=>[{:function_name=>{:name=>"fibonaccit"}, :parameter_list=>[{:parameter=>{:name=>"n"}}], :expressions=>[{:l=>{:name=>"a"}, :o=>"= ", :r=>{:integer=>"0"}}], :end=>"end"}, {:call_site=>{:name=>"fibonaccit"}, :argument_list=>[{:argument=>{:integer=>"10"}}]}], :end=>"end"}]}
@transform_output = Ast::ExpressionList.new( [Ast::ModuleExpression.new(:Fibo ,[Ast::FunctionExpression.new(:fibonaccit, [Ast::NameExpression.new(:n)] , [Ast::AssignmentExpression.new(Ast::NameExpression.new(:a),Ast::IntegerExpression.new(0))] ,nil ), Ast::CallSiteExpression.new(:fibonaccit, [Ast::IntegerExpression.new(10)] ,Ast::NameExpression.new(:self))] )])
end
def test_module_assignment
@ -78,8 +78,8 @@ module Fibo
end
HERE
@parse_output = [{:module_name=>"Fibo", :module_expressions=>[{:l=>{:name=>"a"}, :o=>"= ", :r=>{:l=>{:integer=>"5"}, :o=>"+ ", :r=>{:name=>"foo"}}}, {:call_site=>{:name=>"bar"}, :argument_list=>[{:argument=>{:name=>"b"}}, {:argument=>{:name=>"a"}}, {:argument=>{:name=>"r"}}]}], :end=>"end"}]
@transform_output = [Ast::ModuleExpression.new(:Fibo ,[Ast::AssignmentExpression.new(Ast::NameExpression.new(:a),Ast::OperatorExpression.new("+", Ast::IntegerExpression.new(5),Ast::NameExpression.new(:foo))), Ast::CallSiteExpression.new(:bar, [Ast::NameExpression.new(:b),Ast::NameExpression.new(:a),Ast::NameExpression.new(:r)] ,Ast::NameExpression.new(:self))] )]
@parse_output = {:expression_list=>[{:module_name=>"Fibo", :module_expressions=>[{:l=>{:name=>"a"}, :o=>"= ", :r=>{:l=>{:integer=>"5"}, :o=>"+ ", :r=>{:name=>"foo"}}}, {:call_site=>{:name=>"bar"}, :argument_list=>[{:argument=>{:name=>"b"}}, {:argument=>{:name=>"a"}}, {:argument=>{:name=>"r"}}]}], :end=>"end"}]}
@transform_output = Ast::ExpressionList.new( [Ast::ModuleExpression.new(:Fibo ,[Ast::AssignmentExpression.new(Ast::NameExpression.new(:a),Ast::OperatorExpression.new("+", Ast::IntegerExpression.new(5),Ast::NameExpression.new(:foo))), Ast::CallSiteExpression.new(:bar, [Ast::NameExpression.new(:b),Ast::NameExpression.new(:a),Ast::NameExpression.new(:r)] ,Ast::NameExpression.new(:self))] )])
end
def test_root_module_class
@ -91,8 +91,8 @@ module FooBo
end
HERE
@parse_output = [{:module_name=>"FooBo", :module_expressions=>[{:module_name=>"Bar", :derived_name=>nil, :class_expressions=>[{:l=>{:name=>"a"}, :o=>"= ", :r=>{:l=>{:integer=>"5"}, :o=>"+ ", :r=>{:name=>"foo"}}}], :end=>"end"}], :end=>"end"}]
@transform_output = [Ast::ModuleExpression.new(:FooBo ,[Ast::ClassExpression.new(:Bar ,nil, [Ast::AssignmentExpression.new(Ast::NameExpression.new(:a),Ast::OperatorExpression.new("+", Ast::IntegerExpression.new(5),Ast::NameExpression.new(:foo)))] )] )]
@parse_output = {:expression_list=>[{:module_name=>"FooBo", :module_expressions=>[{:module_name=>"Bar", :derived_name=>nil, :class_expressions=>[{:l=>{:name=>"a"}, :o=>"= ", :r=>{:l=>{:integer=>"5"}, :o=>"+ ", :r=>{:name=>"foo"}}}], :end=>"end"}], :end=>"end"}]}
@transform_output = Ast::ExpressionList.new( [Ast::ModuleExpression.new(:FooBo ,[Ast::ClassExpression.new(:Bar ,nil, [Ast::AssignmentExpression.new(Ast::NameExpression.new(:a),Ast::OperatorExpression.new("+", Ast::IntegerExpression.new(5),Ast::NameExpression.new(:foo)))] )] )])
end
def test_class_method
@ -102,8 +102,8 @@ class FooBo
end
HERE
@parse_output = [{:module_name=>"FooBo", :derived_name=>nil, :class_expressions=>[{:receiver=>{:module_name=>"Bar"}, :call_site=>{:name=>"call"}, :argument_list=>[{:argument=>{:integer=>"35"}}]}], :end=>"end"}]
@transform_output = [Ast::ClassExpression.new(:FooBo ,nil,[Ast::CallSiteExpression.new(:call, [Ast::IntegerExpression.new(35)] ,Ast::ModuleName.new("Bar"))] )]
@parse_output = {:expression_list=>[{:module_name=>"FooBo", :derived_name=>nil, :class_expressions=>[{:receiver=>{:module_name=>"Bar"}, :call_site=>{:name=>"call"}, :argument_list=>[{:argument=>{:integer=>"35"}}]}], :end=>"end"}]}
@transform_output = Ast::ExpressionList.new( [Ast::ClassExpression.new(:FooBo ,nil, [Ast::CallSiteExpression.new(:call, [Ast::IntegerExpression.new(35)] ,Ast::ModuleName.new(:Bar))] )])
end
end