60 lines
1.2 KiB
Go
60 lines
1.2 KiB
Go
package command
|
|
|
|
type Command struct {
|
|
commandDefinition CommandDefinition
|
|
params []Parameter
|
|
}
|
|
|
|
func CreateCommand(cmdDef CommandDefinition, parameters []Parameter) Command {
|
|
return Command{
|
|
commandDefinition: cmdDef,
|
|
params: parameters,
|
|
}
|
|
}
|
|
|
|
func (cmd Command) Definition() CommandDefinition {
|
|
return cmd.commandDefinition
|
|
}
|
|
|
|
func (cmd Command) Parameters() []Parameter {
|
|
return cmd.params
|
|
}
|
|
|
|
type CommandContext struct {
|
|
commandString string
|
|
tokens []Token
|
|
|
|
command Command
|
|
}
|
|
|
|
func CreateCommandContext(commandRegistry *CommandRegistry, commandString string) (ctx *CommandContext, err error) {
|
|
tokenizer := CreateTokenizer()
|
|
|
|
tokens, tokenizerError := tokenizer.Tokenize(commandString)
|
|
|
|
if tokenizerError != nil {
|
|
err = tokenizerError
|
|
return
|
|
}
|
|
|
|
commandDef := commandRegistry.Match(tokens)
|
|
|
|
if commandDef == nil {
|
|
err = createCommandContextError("Unknown command")
|
|
return
|
|
}
|
|
|
|
params := commandDef.ParseParameters(tokens)
|
|
|
|
ctx = &CommandContext{
|
|
commandString: commandString,
|
|
tokens: tokens,
|
|
command: CreateCommand(*commandDef, params),
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
func (ctx *CommandContext) Command() Command {
|
|
return ctx.command
|
|
}
|