sjansen/messageformat

package compiler

import (
    "fmt"

    "github.com/sjansen/messageformat/ast"
    "golang.org/x/text/language"
)

func Compile(lang string, msg *ast.Message) (*Message, error) {
    tag, err := language.Parse(lang)
    if err != nil {
        return nil, err
    }
    return compile(tag, msg, nil)
}

func compile(lang language.Tag, msg *ast.Message, n *numberSign) (*Message, error) {
    parts := make([]part, 0, len(msg.Parts))
    for _, part := range msg.Parts {
        switch x := part.(type) {
        case *ast.NumberSign:
            if n == nil {
                return nil, fmt.Errorf("illegal NumberSign")
            }
            parts = append(parts, n)
        case *ast.PlainArg:
            tmp, err := newPlainArg(lang, x)
            if err != nil {
                return nil, err
            }
            parts = append(parts, tmp)
        case *ast.PluralArg:
            tmp, err := newPluralArg(lang, x)
            if err != nil {
                return nil, err
            }
            parts = append(parts, tmp)
        case *ast.SelectArg:
            tmp, err := newSelectArg(lang, x)
            if err != nil {
                return nil, err
            }
            parts = append(parts, tmp)
        case *ast.Text:
            tmp, err := newText(lang, x)
            if err != nil {
                return nil, err
            }
            parts = append(parts, tmp)
        }
    }
    return &Message{lang: lang, parts: parts}, nil
}