SHS/pkg/shsh/func_table.go
2019-11-28 20:07:28 -08:00

54 lines
945 B
Go

package shsh
type Operation func(*Token) *Token
type Function struct {
function Operation
timesCalled int
args int
}
type FuncTable map[string]*Function
var (
GlobalFuncTable *FuncTable
)
// TODO: Currently only checks arg list length
func ParseFunction(target *Function, args *Token) bool {
// HANDLE EXEC
if target.args < 0 {
return true
}
i := target.args
for iter := &args; *iter != nil; iter = &((*iter).next) {
i -= 1
}
if i != 0 {
// log error here?
return false
}
return true
}
func CallFunction(target *Function, args *Token) *Token {
if !ParseFunction(target, args) {
return args
}
target.timesCalled += 1
return target.function(args)
}
func GetFunction(arg string) *Function {
target, ok := (*GlobalFuncTable)[arg]
if !ok {
// TODO: hook into stdlib exec call
;
}
return target
}