Golang Skip Examples

Example #1

File: parses.go Project: zy02636/gisp

package gisp

import (
	"fmt"
	"reflect"
	"strconv"

	p "github.com/Dwarfartisan/goparsec"
)

var Space = p.Space
var Skip = p.Skip(Space)

// IntParser 解析整数
func IntParser(st p.ParseState) (interface{}, error) {
	i, err := p.Int(st)
	if err == nil {
		val, err := strconv.Atoi(i.(string))
		if err == nil {
			return Int(val), nil
		}
		return nil, err
	}
	return nil, err

}

// 用于string
var EscapeChars = p.Bind_(p.Rune('\\'), func(st p.ParseState) (interface{}, error) {
	r, err := p.OneOf("nrt\"\\")(st)
	if err == nil {

Example #2

File: parsec.go Project: gale320/gisp

				return nil, ParsexSignErrorf(
					"Manybe Arg Error:except 1 parser arg but %v.",
					reflect.TypeOf(param))
			}
		},
		"skip": func(env Env, args ...interface{}) (Lisp, error) {
			if len(args) != 1 {
				return nil, ParsexSignErrorf("Parsec Parser Skip Error: only accept one parsec parser as arg but %v", args)
			}
			param, err := Eval(env, args[0])
			if err != nil {
				return nil, err
			}
			switch parser := param.(type) {
			case Parsecer:
				return ParsecBox(p.Skip(parser.Parser)), nil
			default:
				return nil, ParsexSignErrorf(
					"Skip Arg Error:except 1 parser arg but %v.",
					reflect.TypeOf(param))
			}
		},
	},
}

// Parsecer 定了一个对 Parsec 解释器的封装
type Parsecer struct {
	Parser p.Parser
}

// Task 实现了其求值逻辑