phodal/coca

package astutil

import "github.com/antlr/antlr4/runtime/Go/antlr/v4"

func GetNodeIndex(node antlr.ParseTree) int {
    if node == nil || node.GetParent() == nil {
        return -1
    }
    parent := node.GetParent()

    for i := 0; i < parent.GetChildCount(); i++ {
        if parent.GetChild(i) == node {
            return i
        }
    }
    return 0
}