Package callgraph represents function call graph.

GetMainPkg returns main package of a command.

NewConfig creates a new default build configuration.

NewConfigFromString creates a new default build configuration.

FromFiles is option to use a list of filenames for initial packages.

FromString is option to use a string as body of initial package.

ChanOp abstracts an ssa.Send, ssa.Unop(ARROW) or a SelectState.

Config holds the configuration for building SSA IR.

SSAInfo is the SSA IR + metainfo built from a given Config.

A Mode value is a flag indicating how the source code are supplied.