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VIATRA2/Examples/VTCL/ASM
< VIATRA2 | Examples | VTCL
Revision as of 12:22, 17 February 2009 by Daniel.varro.gmail.com (Talk | contribs) (→ASM functions)
Abstract State Machines
Abstract state machines (ASMs) provide a high-level means for assembling complex transformation programs.
ASM functions
ASM functions provide a non-persistent map to store values. Each ASM function needs to be declared prior to its first use. Initial values can also be set when defining an ASM function. The values stored at a certain location of an ASM function can be updated using the update ASM construct.
machine asmFuns {
asmfunction team / 2 {
(1, "real") = "Casillas";
(7, "real") = "Raul";
}
}In the new (upcoming) VIATRA2 version, types can also be defined for ASM functions as follows.
// Import is needed if types are intended to be used by local names
import datatypes;
machine asmFuns {
asmfunction team(Integer, datatypes.String) : String / 2 { // FQNs can always be used for defining types
(1, "real") = "Casillas";
(7, "real") = "Raul";
}
}