SMC_NCTokenizer (FB)¶

FUNCTION_BLOCK FINAL SMC_NCTokenizer

Reads a CNC program from an SMC_ITextStream and converts it into a SMC_TokenQueue of SMC_Token, which ultimately will be processed by SMC_NCTokenParser (which repleaces SMC_ReadNCTokens). Delimiters for tokens of type string, comment and variable can be reconfigured using the method SMC_NCTokenizer.SetDelimiters.

InOut:

Scope	Name	Type	Initial	Comment
Input	`bExecute`	`BOOL`		Rising edge: Starts operation.
	`stream`	SMC_ITextStream		Stream to read the CNC program from; e.g. might be a file stream
	`paTokensBuffer`	POINTER TO ARRAY [0..0] OF SMC_Token		Buffer for SMC_TokenQueue
	`udiTokensBufferSize`	`UDINT`		Length of buffer for SMC_TokenQueue
	`bEnableSyntaxChecks`	`BOOL`	TRUE	Report an error in case of syntax error, if `TRUE` Skips the erroneous token, if `FALSE`
Output	`bDone`	`BOOL`		`TRUE`: The input stream has been processed completely.
	`bBusy`	`BOOL`		`FALSE`: The FB hasn’t finished processing the input stream yet.
	`bError`	`BOOL`		`TRUE`: An error occured. `ErrorID` provides additional information.
	`ErrorID`	`SMC_ERROR`		In case of normal operation `SMC_Error.SMC_NO_ERROR`, otherwise the ID of the occured error.
	`tokens`	SMC_TokenQueue		Token queue generated from the input `stream`
	`diSourceLineNo`	`DINT`		Zero-based current source line number
	`diColumnNo`	`DINT`		Zero-based current column number

Methods:

SetDelimiters

Structure: