60 lines
1.1 KiB
Go
60 lines
1.1 KiB
Go
// preset.go
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package expr
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import "strings"
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// Preset control variables
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const (
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control_last_result = "_last"
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control_bool_shortcut = "_bool_shortcut"
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control_import_path = "_import_path"
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)
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// Other control variables
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const (
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control_export_all = "_export_all"
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)
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// Initial values
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const (
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init_import_path = "~/.local/lib/go-pkg/expr:/usr/local/lib/go-pkg/expr:/usr/lib/go-pkg/expr"
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)
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func initDefaultVars(ctx ExprContext) {
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ctx.SetVar(control_bool_shortcut, true)
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ctx.SetVar(control_import_path, init_import_path)
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}
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func enable(ctx ExprContext, name string) {
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if strings.HasPrefix(name, "_") {
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ctx.SetVar(name, true)
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} else {
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ctx.SetVar("_"+name, true)
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}
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}
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func disable(ctx ExprContext, name string) {
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if strings.HasPrefix(name, "_") {
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ctx.SetVar(name, false)
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} else {
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ctx.SetVar("_"+name, false)
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}
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}
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func isEnabled(ctx ExprContext, name string) (status bool) {
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if v, exists := ctx.GetVar(name); exists {
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if b, ok := v.(bool); ok {
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status = b
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}
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}
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return
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}
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func getControlString(ctx ExprContext, name string) (s string, exists bool) {
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var v any
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if v, exists = ctx.GetVar(name); exists {
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s, exists = v.(string)
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}
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return
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}
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