Cobra Forums

start = DateTime.now
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duration = DateTime.now.subtract(start)

start = DateTime.now
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duration = sharp'DateTime.Now - start' to TimeSpan

use Cobra.Compiler

class AstDemo

    def main
        
        # set some default options for the compiler
        options = OptionValues()
        options.add("compile", true)
        options.add("back-end", "clr")
        options.add("turbo", true)
        options.add("number", decimal)
        
        # create an instance of the Cobra Compiler
        verbosity = 0
        compiler = Compiler(verbosity)
        compiler.options = options
        compiler.initBackEnd
        
        # set some shared variables on the Node class
        Node.setCompiler(compiler)
        Node.typeProvider = compiler
        
        # create an instance of the Cobra Parser
        parser = CobraParser()
        parser.typeProvider = compiler
        parser.warningRecorder = compiler
        parser.errorRecorder = compiler
        parser.globalNS = compiler.globalNS
        parser.backEnd = compiler.backEnd
        
        # create a Cobra source "file", you could also read this from the disk
        fileName = "example.cobra"
        
        sourceCode = _
            "class A\n" +
            "    var b as int\n" +
            "    var c as int\n" +          
            "    def add as int\n" +
            "        return .b + .c"
        
        # parse the source code and get a prelimary AST
        module as CobraModule? = nil
        
        try
            module = parser.parseSource(fileName, sourceCode)
            compiler.modules.add(module)
        catch ex as SourceException
            print "Parser error: [ex.toString]"
        
        if module <> nil
            # print the nodes in the abstract syntax tree
            for syntaxNode in module.topNameSpace.declsInOrder
                if syntaxNode inherits Box
                    print syntaxNode.name
                    for member in syntaxNode.declsInOrder
                        print "\t[member.name]"