Полностью переписал библиотеку. Перевёл с EBNF на PEG.v0.1.0

1 files changed, 44 insertions, 0 deletions

diff --git a/model/model.go b/model/model.go
new file mode 100644
index 0000000..2bc6dfb
--- /dev/null
+++ b/model/model.go
@@ -0,0 +1,44 @@
+package model
+
+import (
+	"iter"
+)
+
+type Ident string
+
+type Command struct {
+	Name  Ident
+	Args  []any
+	Group Group
+}
+
+// Value returns first argument of command.
+func (c *Command) Value() any {
+	if len(c.Args) > 0 {
+		return c.Args[0]
+	}
+	return nil
+}
+
+type Group []Command
+
+// Get returns first command with given name.
+func (g Group) Get(name Ident) *Command {
+	for _, c := range g {
+		if c.Name == name {
+			return &c
+		}
+	}
+	return nil
+}
+
+// Filter commands by predicate and returns iterator over filtered commands.
+func (g Group) Filter(predicate func(c *Command) bool) iter.Seq[*Command] {
+	return func(yield func(*Command) bool) {
+		for _, c := range g {
+			if predicate(&c) && !yield(&c) {
+				return
+			}
+		}
+	}
+}