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allow multiple rules

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This commit is contained in:
Fabrice CLAEYS 2016-06-06 09:21:00 +02:00
parent c5ac563e74
commit 84076db78e
1 changed files with 44 additions and 30 deletions
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74
rules.go
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@ -109,39 +109,53 @@ func (r *Rules) Parse(expression string) (*mux.Route, error) {
f := func(c rune) bool { f := func(c rune) bool {
return c == ':' return c == ':'
} }
// get function
parsedFunctions := strings.FieldsFunc(expression, f) // Allow multiple rules separated by ;
if len(parsedFunctions) == 0 { splitRule := func(c rune) bool {
return nil, errors.New("Error parsing rule: " + expression) return c == ';'
}
parsedFunction, ok := functions[parsedFunctions[0]]
if !ok {
return nil, errors.New("Error parsing rule: " + expression + ". Unknown function: " + parsedFunctions[0])
}
parsedFunctions = append(parsedFunctions[:0], parsedFunctions[1:]...)
fargs := func(c rune) bool {
return c == ',' || c == ';'
}
// get function
parsedArgs := strings.FieldsFunc(strings.Join(parsedFunctions, ":"), fargs)
if len(parsedArgs) == 0 {
return nil, errors.New("Error parsing args from rule: " + expression)
} }
inputs := make([]reflect.Value, len(parsedArgs)) parsedRules := strings.FieldsFunc(expression, splitRule)
for i := range parsedArgs {
inputs[i] = reflect.ValueOf(parsedArgs[i]) var resultRoute *mux.Route
}
method := reflect.ValueOf(parsedFunction) for _, rule := range parsedRules {
if method.IsValid() { // get function
resultRoute := method.Call(inputs)[0].Interface().(*mux.Route) parsedFunctions := strings.FieldsFunc(rule, f)
if r.err != nil { if len(parsedFunctions) == 0 {
return nil, r.err return nil, errors.New("Error parsing rule: " + rule)
} }
if resultRoute.GetError() != nil { parsedFunction, ok := functions[parsedFunctions[0]]
return nil, resultRoute.GetError() if !ok {
return nil, errors.New("Error parsing rule: " + rule + ". Unknown function: " + parsedFunctions[0])
}
parsedFunctions = append(parsedFunctions[:0], parsedFunctions[1:]...)
fargs := func(c rune) bool {
return c == ','
}
// get function
parsedArgs := strings.FieldsFunc(strings.Join(parsedFunctions, ":"), fargs)
if len(parsedArgs) == 0 {
return nil, errors.New("Error parsing args from rule: " + rule)
}
inputs := make([]reflect.Value, len(parsedArgs))
for i := range parsedArgs {
inputs[i] = reflect.ValueOf(parsedArgs[i])
}
method := reflect.ValueOf(parsedFunction)
if method.IsValid() {
resultRoute = method.Call(inputs)[0].Interface().(*mux.Route)
if r.err != nil {
return nil, r.err
}
if resultRoute.GetError() != nil {
return nil, resultRoute.GetError()
}
} else {
return nil, errors.New("Method not found: " + parsedFunctions[0])
} }
return resultRoute, nil
} }
return nil, errors.New("Method not found: " + parsedFunctions[0]) return resultRoute, nil
} }