path: root/ui/filter.go

package ui

import (
    "github.com/ethereum/go-ethereum/core"
    "github.com/ethereum/go-ethereum/ethutil"
)

func NewFilterFromMap(object map[string]interface{}, eth core.EthManager) *core.Filter {
    filter := core.NewFilter(eth)

    if object["earliest"] != nil {
        val := ethutil.NewValue(object["earliest"])
        filter.SetEarliestBlock(val.Int())
    }

    if object["latest"] != nil {
        val := ethutil.NewValue(object["latest"])
        filter.SetLatestBlock(val.Int())
    }

    if object["to"] != nil {
        val := ethutil.NewValue(object["to"])
        filter.AddTo(ethutil.Hex2Bytes(val.Str()))
    }

    if object["from"] != nil {
        val := ethutil.NewValue(object["from"])
        filter.AddFrom(ethutil.Hex2Bytes(val.Str()))
    }

    if object["max"] != nil {
        val := ethutil.NewValue(object["max"])
        filter.SetMax(int(val.Uint()))
    }

    if object["skip"] != nil {
        val := ethutil.NewValue(object["skip"])
        filter.SetSkip(int(val.Uint()))
    }

    if object["altered"] != nil {
        filter.Altered = makeAltered(object["altered"])
    }

    return filter
}

// Conversion methodn
func mapToAccountChange(m map[string]interface{}) (d core.AccountChange) {
    if str, ok := m["id"].(string); ok {
        d.Address = ethutil.Hex2Bytes(str)
    }

    if str, ok := m["at"].(string); ok {
        d.StateAddress = ethutil.Hex2Bytes(str)
    }

    return
}

// data can come in in the following formats:
// ["aabbccdd", {id: "ccddee", at: "11223344"}], "aabbcc", {id: "ccddee", at: "1122"}
func makeAltered(v interface{}) (d []core.AccountChange) {
    if str, ok := v.(string); ok {
        d = append(d, core.AccountChange{ethutil.Hex2Bytes(str), nil})
    } else if obj, ok := v.(map[string]interface{}); ok {
        d = append(d, mapToAccountChange(obj))
    } else if slice, ok := v.([]interface{}); ok {
        for _, item := range slice {
            d = append(d, makeAltered(item)...)
        }
    }

    return
}