39 lines
537 B
Go
39 lines
537 B
Go
package ast
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import (
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"bytes"
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)
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type Node interface {
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TokenLiteral() string
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String() string
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}
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type Statement interface {
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Node
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statementNode()
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}
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type Expression interface {
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Node
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expressionNode()
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}
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type Program struct {
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Statements []Statement
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}
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func (p *Program) TokenLiteral() string {
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if len(p.Statements) > 0 {
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return p.Statements[0].TokenLiteral()
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}
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return ""
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}
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func (p *Program) String() string {
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var out bytes.Buffer
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for _, stmt := range p.Statements {
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out.WriteString(stmt.String())
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}
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return out.String()
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}
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