“use strict”;

Object.defineProperty(exports, “__esModule”, {

value: true

}); exports.default = populatePlaceholders;

function t() {

const data = _interopRequireWildcard(require("@babel/types"));

t = function () {
  return data;
};

return data;

}

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = Object.defineProperty && Object.getOwnPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : {}; if (desc.get || desc.set) { Object.defineProperty(newObj, key, desc); } else { newObj = obj; } } } } newObj.default = obj; return newObj; } }

function populatePlaceholders(metadata, replacements) {

const ast = t().cloneNode(metadata.ast);

if (replacements) {
  metadata.placeholders.forEach(placeholder => {
    if (!Object.prototype.hasOwnProperty.call(replacements, placeholder.name)) {
      const placeholderName = placeholder.name;
      throw new Error(`Error: No substitution given for "${placeholderName}". If this is not meant to be a
          placeholder you may want to consider passing one of the following options to @babel/template:
          - { placeholderPattern: false, placeholderWhitelist: new Set(['${placeholderName}'])}
          - { placeholderPattern: /^${placeholderName}$/ }`);
    }
  });
  Object.keys(replacements).forEach(key => {
    if (!metadata.placeholderNames.has(key)) {
      throw new Error(`Unknown substitution "${key}" given`);
    }
  });
}

metadata.placeholders.slice().reverse().forEach(placeholder => {
  try {
    applyReplacement(placeholder, ast, replacements && replacements[placeholder.name] || null);
  } catch (e) {
    e.message = `@babel/template placeholder "${placeholder.name}": ${e.message}`;
    throw e;
  }
});
return ast;

}

function applyReplacement(placeholder, ast, replacement) {

if (placeholder.isDuplicate) {
  if (Array.isArray(replacement)) {
    replacement = replacement.map(node => t().cloneNode(node));
  } else if (typeof replacement === "object") {
    replacement = t().cloneNode(replacement);
  }
}

const {
  parent,
  key,
  index
} = placeholder.resolve(ast);

if (placeholder.type === "string") {
  if (typeof replacement === "string") {
    replacement = t().stringLiteral(replacement);
  }

  if (!replacement || !t().isStringLiteral(replacement)) {
    throw new Error("Expected string substitution");
  }
} else if (placeholder.type === "statement") {
  if (index === undefined) {
    if (!replacement) {
      replacement = t().emptyStatement();
    } else if (Array.isArray(replacement)) {
      replacement = t().blockStatement(replacement);
    } else if (typeof replacement === "string") {
      replacement = t().expressionStatement(t().identifier(replacement));
    } else if (!t().isStatement(replacement)) {
      replacement = t().expressionStatement(replacement);
    }
  } else {
    if (replacement && !Array.isArray(replacement)) {
      if (typeof replacement === "string") {
        replacement = t().identifier(replacement);
      }

      if (!t().isStatement(replacement)) {
        replacement = t().expressionStatement(replacement);
      }
    }
  }
} else if (placeholder.type === "param") {
  if (typeof replacement === "string") {
    replacement = t().identifier(replacement);
  }

  if (index === undefined) throw new Error("Assertion failure.");
} else {
  if (typeof replacement === "string") {
    replacement = t().identifier(replacement);
  }

  if (Array.isArray(replacement)) {
    throw new Error("Cannot replace single expression with an array.");
  }
}

if (index === undefined) {
  t().validate(parent, key, replacement);
  parent[key] = replacement;
} else {
  const items = parent[key].slice();

  if (placeholder.type === "statement" || placeholder.type === "param") {
    if (replacement == null) {
      items.splice(index, 1);
    } else if (Array.isArray(replacement)) {
      items.splice(index, 1, ...replacement);
    } else {
      items[index] = replacement;
    }
  } else {
    items[index] = replacement;
  }

  t().validate(parent, key, items);
  parent[key] = items;
}

}