dont use this; refactoring GtNode
support UnImplemented Visitor API
rename deplicated function name GtNode.Evaluate => GtNode.Accept
reduce error
Merge branch 'feature/ReImplement-GtNodeVisitor'
added stub code for KonohaByteCodeGenerator
fix build error in GtGenerator
reduce build error
fix build error
add debug code for GtGenerator
refactor CSourceGenerator
fix python-sourcegen
support following KonohaByteCodeGenerator Visitor API
Visit(Boolean|Int|Double|String)Node, VisitBinaryNode,
VisitGetLocalNode, VisitVarDeclNode, VisitReturnNode
Use HeaderBuilder, for(/*local*/int i = 0..., ReserveRegister
Merge pull request #22 from Kouhei-Moriya/MergeKonohaByteCodeGen

support KonohaByteCodeGenerator Visitor API
fix CSourceGenerator Literal
implements rest of CSourceGenerator
implement JavaByteCodeGenerator.Visit(Boolean|Int,Float,String)Node
remove ParsedTree parameter from CreateEmptyNode() API
support JavaByteCodeBuilder.VisitGetIndex, VisitSetIndex