43 lines
855 B
Go
43 lines
855 B
Go
// Copyright (c) 2024 Celestino Amoroso (celestino.amoroso@gmail.com).
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// All rights reserved.
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// operand-list.go
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package expr
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import (
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"git.portale-stac.it/go-pkg/expr/kern"
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)
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// -------- list term
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func newListTermA(args ...*term) *term {
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return newListTerm(0, 0, args)
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}
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func newListTerm(row, col int, args []*term) *term {
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return &term{
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tk: *NewValueToken(row, col, SymList, "[]", args),
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parent: nil,
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children: nil,
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position: posLeaf,
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priority: priValue,
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evalFunc: evalList,
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}
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}
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// -------- list func
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func evalList(ctx kern.ExprContext, opTerm *term) (v any, err error) {
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list, _ := opTerm.value().([]*term)
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items := make(kern.ListType, len(list))
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for i, tree := range list {
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var param any
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if param, err = tree.Compute(ctx); err != nil {
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break
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}
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items[i] = param
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}
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if err == nil {
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v = &items
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}
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return
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}
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