const (
	// ModuleSep is the character used for the module scope separation. For
	// example when using `fmt.printf` or `math.sin` this is the char used.
	// It is included here for convenience when importing this package.
	ModuleSep = interfaces.ModuleSep

	// ReplaceChar is a special char that is used to replace ModuleSep when
	// it can't be used for some reason. This currently only happens in the
	// golang template library. Even with this limitation in that library,
	// we don't want to allow this as the first or last character in a name.
	// NOTE: the template library will panic if it is one of: .-#
	ReplaceChar = "_"

	// CoreDir is the directory prefix where core mcl code is embedded.
	CoreDir = "core/"

	// FunctionsRelDir is the path where the functions are kept, relative to
	// the main source code root.
	FunctionsRelDir = "lang/core/"

	// ConcatFuncName is the name the concat function is registered as. It
	// is listed here because it needs a well-known name that can be used by
	// the string interpolation code.
	ConcatFuncName = "concat"

	// ContainsFuncName is the name the contains function is registered as.
	ContainsFuncName = "contains"

	// LookupDefaultFuncName is the name this function is registered as.
	// This starts with an underscore so that it cannot be used from the
	// lexer.
	LookupDefaultFuncName = "_lookup_default"

	// LookupFuncName is the name this function is registered as.
	// This starts with an underscore so that it cannot be used from the
	// lexer.
	LookupFuncName = "_lookup"

	// StructLookupFuncName is the name this function is registered as. This
	// starts with an underscore so that it cannot be used from the lexer.
	StructLookupFuncName = "_struct_lookup"

	// StructLookupOptionalFuncName is the name this function is registered
	// as. This starts with an underscore so that it cannot be used from the
	// lexer.
	StructLookupOptionalFuncName = "_struct_lookup_optional"

	// CollectFuncName is the name this function is registered as. This
	// starts with an underscore so that it cannot be used from the lexer.
	CollectFuncName = "_collect"

	// CollectFuncInFieldName is the name of the name field in the struct.
	CollectFuncInFieldName = "name"
	// CollectFuncInFieldHost is the name of the host field in the struct.
	CollectFuncInFieldHost = "host"

	// CollectFuncInType is the most complex of the three possible input
	// types. The other two possible ones are str or []str.
	CollectFuncInType = "[]struct{" + CollectFuncInFieldName + " str; " + CollectFuncInFieldHost + " str}"

	// CollectFuncOutFieldName is the name of the name field in the struct.
	CollectFuncOutFieldName = "name"
	// CollectFuncOutFieldHost is the name of the host field in the struct.
	CollectFuncOutFieldHost = "host"
	// CollectFuncOutFieldData is the name of the data field in the struct.
	CollectFuncOutFieldData = "data"

	// CollectFuncOutStruct is the struct type that we return a list of.
	CollectFuncOutStruct = "struct{" + CollectFuncOutFieldName + " str; " + CollectFuncOutFieldHost + " str; " + CollectFuncOutFieldData + " str}"

	// CollectFuncOutType is the expected return type, the data field is an
	// encoded resource blob.
	CollectFuncOutType = "[]" + CollectFuncOutStruct
)