plugin.py

import sublime
import sublime_plugin


class ConvertToTemplateString(sublime_plugin.TextCommand):
    """ This command is guaranteed to executed when { is pressed """
    def run(self, edit):
        sel = self.view.sel()
        if not sel:
            return
        for r in sel:
            point = r.b
            if not in_supported_file(self.view, point):
                return None
            regular_string_region = get_regular_string_region(self.view, point)
            if not regular_string_region:
                continue
            scan_region = self.view.substr(regular_string_region)
            # the user could typed $ or {
            if "${" not in scan_region:
                continue
            first_quote = regular_string_region.begin()
            last_quote = regular_string_region.end() - 1
            are_quotes = is_regular_quote(self.view.substr(first_quote)) and is_regular_quote(self.view.substr(last_quote))
            if not are_quotes:
                continue # sanity check, just to 100% make sure we are replacing quotes
            if is_jsx_attribute(self.view, point) and not is_jsx_attribute_wrapped_with_curly_brackets(self.view, point):
                # insert surrounding curly brackets
                self.view.replace(
                    edit, sublime.Region(last_quote, last_quote + 1), '`}')
                self.view.replace(
                    edit, sublime.Region(first_quote, first_quote + 1), '{`')
                continue
            self.view.replace(
                edit, sublime.Region(last_quote, last_quote + 1), '`')
            self.view.replace(
                edit, sublime.Region(first_quote, first_quote + 1), '`')


def is_jsx_attribute(view: sublime.View, point: int) -> bool:
    return view.match_selector(point, "meta.jsx meta.tag.attributes")


def is_jsx_attribute_wrapped_with_curly_brackets(view: sublime.View, point: int) -> bool:
    return view.match_selector(point, "meta.jsx meta.tag.attributes meta.interpolation meta.string string.quoted")


def is_regular_quote(char: str) -> bool:
    return char in ["'", '"']


def in_supported_file(view: sublime.View, point: int) -> bool:
    return view.match_selector(point, "source.js | source.jsx | source.ts | source.tsx | text.html.ngx | text.html.svelte | text.html.vue")


def get_regular_string_region(view: sublime.View, point: int):
    return view.expand_to_scope(point, "string.quoted.single | string.quoted.double")