66 lines
1.4 KiB
Go
66 lines
1.4 KiB
Go
// Copyright (c) 2024-2026 Celestino Amoroso (celestino.amoroso@gmail.com).
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// All rights reserved.
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// operator-include.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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"git.portale-stac.it/go-pkg/expr/scan"
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)
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//-------- include term
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func newIncludeTerm(tk *scan.Token) (inst *scan.Term) {
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return &scan.Term{
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Tk: *tk,
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Children: make([]*scan.Term, 0, 1),
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Position: scan.PosPrefix,
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Priority: scan.PriSign,
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EvalFunc: evalInclude,
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}
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}
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func evalInclude(ctx kern.ExprContext, opTerm *scan.Term) (v any, err error) {
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var childValue any
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if childValue, err = opTerm.EvalPrefix(ctx); err != nil {
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return
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}
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count := 0
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if kern.IsList(childValue) {
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list, _ := childValue.(*kern.ListType)
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for i, filePathSpec := range *list {
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if filePath, ok := filePathSpec.(string); ok {
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if v, err = EvalFile(ctx, filePath); err == nil {
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count++
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} else {
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err = opTerm.Errorf("can't load file %q", filePath)
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break
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}
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} else {
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err = opTerm.Errorf("expected string at item nr %d, got %T", i+1, filePathSpec)
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break
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}
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}
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} else if kern.IsString(childValue) {
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filePath, _ := childValue.(string)
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if v, err = EvalFile(ctx, filePath); err == nil {
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count++
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}
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} else {
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err = opTerm.ErrIncompatiblePrefixPostfixType(childValue)
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}
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if err != nil {
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//v = count
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v = nil
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}
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return
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}
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// init
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func init() {
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scan.RegisterTermConstructor(scan.SymKwInclude, newIncludeTerm)
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}
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