Lexical Error In Axapta
resources Windows Server 2012 resources Programs MSDN subscriptions Overview Benefits Administrators Students Microsoft Imagine Microsoft Student Partners ISV Startups TechRewards Events Community Magazine Forums Blogs Channel 9 Documentation APIs and reference Dev centers Samples Retired content We’re sorry. The content you requested has been removed. You’ll be auto redirected in 1 second. X++ Language Programming Guide Functions and Macros Macros in X++ Macros in X++ How to: Distinguish Between Precompile and Compile Error Messages How to: Distinguish Between Precompile and Compile Error Messages How to: Distinguish Between Precompile and Compile Error Messages How to: Use #define and #if to Test a Macro How to: Distinguish Between Precompile and Compile Error Messages How to: Use the #undef Directive How to: Use a Macro Value How to: Test a Macro Value Directives and Macros are Case-Insensitive How to: Use the #defInc and #defDec Directives How to: Use the #globaldefine Directive to Avoid Overwriting How to: Use Parameters with Macros How to: Use the #localmacro and #globalmacro Directives How to: Nest Macro Symbols How to: Use the #macrolib Directive for AOT Macro Libraries How to: Use the #linenumber Directive Range of Macro Referencing TOC Collapse the table of content Expand the table of content This documentation is archived and is not being maintained. This documentation is archived and is not being maintained. How to: Distinguish Between Precompile and Compile Error Messages [AX 2012] Other Versions Dynamics AX 2009 Dynamics AX 4.0 Updated: October 11, 2008 Applies To: Microsoft Dynamics AX 2012 R3, Microsoft Dynamics AX 2012 R2, Microsoft Dynamics AX 2012 Feature Pack, Microsoft Dynamics AX 2012 When you are developing code that contains macros, you must understand whether an error message is generated during the precompile or the compile phase. The two key words to look for are: Lexical – This indicates a precompile error. Syntax – This indicates a compile error. Prerequisites For this topic, you must understand the information in How to: Use #define and #if to Test a Macro. Code Examples The following table shows X++ examples that illustrate lexical and syntax errors related to macro use. Code Description #define.MyMacro1(info("Hello");) A Lexical error caused by the first closing parenthesis, which marks the end of the directive. Therefore the precompiler is confused by the last two characters ;). #define.MyMacro2(++++iTest;) #MyMacro2 A Syntax error caused by using the non-existent ++++ operator. The X++ compiler encounters this operator after #MyMacro2 i
VilladsenNovember 12, 20074 Share 0 0 The X++ language features a macro expansion facility. With it, you can define macros, use macro values, do conditional compilation etc. In this blog I'll describe the semantics of the constructs and provide some guidance to resolve some of the problems beginners and experts alike are having with this language feature. Macros are unstructured in that they are not defined by the grammar of the language. The handling of macros takes place before the text reaches the compiler. Macros may appear inside methods and class declarations anywhere that white space is permitted, and may also appear after https://msdn.microsoft.com/en-us/library/cc197106.aspx the ending } in class definitions. The semantics of each ofthe macro keywords are described below: Macro constructs #defineThe syntax is #define.MyName(SomeValue) This defines a macro called MyName with the value SomeValue. When this definition is in effect, any references to #MyName will be replaced with the character sequence SomeValue. The definition has no other semantics aside from defining the symbol MyName: The text does not reach https://blogs.msdn.microsoft.com/x/2007/11/12/macros-definitions-and-pitfalls/ the compiler itself. When the compilation of the current method is over, the symbol (MyName in this case) is no longer remembered. If the symbol is already defined, the old value is discarded and replaced by the new value. #globaldefineThe syntax is #globaldefine.MyName(SomeValue) This has the same semantics as #define, described above. #defincThe syntax is #definc.MyName This macro construct is used mainly when the value is a integer value. The preprocessor will increment the value of the symbol by one. If the value was not defined before the #definc occurs, an error is issued by the compiler. If the value before the #definc is not an integer, the old value will be overwritten with the value 0 and then incremented, yielding the value 1. #defdecThe syntax is #defdec.MyName This macro construct is used mainly when the value is a integer value. The preprocessor will decrement the value of the symbol by one. If the value was not defined before the #defdec occurs an error is issued by the compiler. If the value before the #defdec is not an integer, the old value will be overwritten with the value 0 and then decremented, yielding the value -1. #undefThe syn
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow http://stackoverflow.com/questions/3484689/what-is-an-example-of-a-lexical-error-and-is-it-possible-that-a-language-has-no the company Business Learn more about hiring developers or posting ads with us Stack http://stackoverflow.com/questions/19413491/how-can-you-get-a-detailed-error-descriptions-in-dynamics-ax Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up What is an example of a lexical error and is it possible that a language has no lexical lexical error errors? up vote 7 down vote favorite 3 for our compiler theory class, we are tasked with creating a simple interpreter for our own designed programming language. I am using jflex and cup as my generators but i'm a bit stuck with what a lexical error is. Also, is it recommended that i use the state feature of jflex? it feels wrong as it seems like the parser is better suited to lexical error in handling that aspect. and do you recommend any other tools to create the language. I'm sorry if i'm impatient but it's due on tuesday. compiler-theory jflex share|improve this question asked Aug 14 '10 at 18:57 cesar 2,414103052 add a comment| 4 Answers 4 active oldest votes up vote 11 down vote accepted A lexical error is any input that can be rejected by the lexer. This generally results from token recognition falling off the end of the rules you've defined. For example (in no particular syntax): [0-9]+ ===> NUMBER token [a-zA-Z] ===> LETTERS token anything else ===> error! If you think about a lexer as a finite state machine that accepts valid input strings, then errors are going to be any input strings that do not result in that finite state machine reaching an accepting state. The rest of your question was rather unclear to me. If you already have some tools you are using, then perhaps you're best to learn how to achieve what you want to achieve using those tools (I have no experience with either of the tools you mentioned). EDIT: Having re-read your question, there's a second part I can answer. It is possible that a language could have no lexical errors - it's the language in which any input strin
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How can you get a detailed error descriptions in Dynamics AX? up vote 0 down vote favorite When doing many different (obviously) wrong things in A++ syntax I only get "Syntax error" in Description and some number (Err:9999) in Diagnostic ID. This does not help me at all finding out whats wrong so I can fix it. No hint, no nothing! This is compile time syntax errors that the IDE should just hand to me. So how can I get more detailed information about what is wrong? x++ dynamics-ax-2012 axapta morph-x share|improve this question edited Oct 17 '13 at 12:33 j.a.estevan 2,6931029 asked Oct 16 '13 at 20:43 Sturla 18319 add a comment| 2 Answers 2 active oldest votes up vote 0 down vote accepted There is no way of showing more information that this "Syntax error" for that error type. Almost always is a missing semicolon or brackets dispaired. share|improve this answer answered Oct 17 '13 at 12:12 j.a.estevan 2,6931029 I´m so hard pressed to believe that! :-( Could you show me some documentation confirming it? Though after searching for few days I´m going to mark this as the answer to morrow if nobody else can dispute your claim. –Sturla Oct 18 '13 at 9:07 There is no documentation about things that can't be done, sorry. I'm working with AX for many years and versions, this is only my personal answer. –j.a.estevan Oct 18 '13 at 9:12 add a comment| up vote 1 down vote When you doubleclick on a syntax error line in the compiler output window, the code editor window opens and displays the code with the syntax error. The part of the code with the error is marked with a red squiggly underline and the cursor is placed at the start of the syntax error. This should make it easy to find out what is wrong. In addition to what j.a.estevan suggested, in my experience syntax errors also occur because you forget the second = symbol in the where part of a select statement you unintentionally add a second = symbol when assigning the value of a variable you delete a variable in the classDeclaration of a class/form, but it is still used in one of the methods a macro is changed/deleted an object is cha