48 lines
1.2 KiB
Go
48 lines
1.2 KiB
Go
package types
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import (
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"fmt"
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yaml "gopkg.in/yaml.v2"
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sdk "github.com/cosmos/cosmos-sdk/types"
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)
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// Supply represents a struct that passively keeps track of the total supply amounts in the network
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type Supply struct {
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Total sdk.Coins `json:"total" yaml:"total"` // total supply of tokens registered on the chain
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}
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// NewSupply creates a new Supply instance
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func NewSupply(total sdk.Coins) Supply { return Supply{total} }
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// DefaultSupply creates an empty Supply
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func DefaultSupply() Supply { return NewSupply(sdk.NewCoins()) }
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// Inflate adds coins to the total supply
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func (supply *Supply) Inflate(amount sdk.Coins) {
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supply.Total = supply.Total.Add(amount)
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}
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// Deflate subtracts coins from the total supply
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func (supply *Supply) Deflate(amount sdk.Coins) {
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supply.Total = supply.Total.Sub(amount)
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}
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// String returns a human readable string representation of a supplier.
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func (supply Supply) String() string {
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b, err := yaml.Marshal(supply)
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if err != nil {
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panic(err)
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}
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return string(b)
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}
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// ValidateBasic validates the Supply coins and returns error if invalid
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func (supply Supply) ValidateBasic() error {
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if !supply.Total.IsValid() {
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return fmt.Errorf("invalid total supply: %s", supply.Total.String())
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}
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return nil
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}
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