35 lines
550 B
Go
35 lines
550 B
Go
package evaluator
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import (
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"monkey/ast"
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"monkey/object"
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)
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func Eval(node ast.Node) object.Object {
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switch node := node.(type) {
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// Statements
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case *ast.Program:
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return evalStatements(node.Statements)
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case *ast.ExpressionStatement:
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return Eval(node.Expression)
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// Expressions
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case *ast.IntegerLiteral:
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return &object.Integer{Value: node.Value}
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}
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return nil
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}
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func evalStatements(stmts []ast.Statement) object.Object {
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var result object.Object
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for _, statement := range stmts {
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result = Eval(statement)
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}
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return result
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}
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