matiec: stage3/TODO@f637ac331a68

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stage3/TODO

author	Mario de Sousa <msousa@fe.up.pt>
	Thu, 08 Nov 2012 17:31:29 +0000
changeset 720	f637ac331a68
parent 413	a9d377c4987a
permissions	-rw-r--r--

Use duplicate symtable instead of symtable for enum constant value table (this will later allow us to detect semantic errors in IEC 61131-3 source code)



 Things that we must still check for in stage 3:


1) Handling of CONSTANTs:

 1.a) "Any program organization unit attempts to modify the value of a variable that has been declared with the CONSTANT qualifier;"
 1.b) From table 16.a "The CONSTANT qualifier shall not be used in the declaration of function block instances as described in 2.5.2.1."

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