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/**
* @fileoverview An object that creates fix commands for rules.
* @author Nicholas C. Zakas
*/
"use strict";
/* eslint class-methods-use-this: off -- Methods desired on instance */
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
// none!
//------------------------------------------------------------------------------
// Helpers
//------------------------------------------------------------------------------
/**
* Creates a fix command that inserts text at the specified index in the source text.
* @param {int} index The 0-based index at which to insert the new text.
* @param {string} text The text to insert.
* @returns {Object} The fix command.
* @private
*/
function insertTextAt(index, text) {
return {
range: [index, index],
text,
};
}
//------------------------------------------------------------------------------
// Public Interface
//------------------------------------------------------------------------------
/**
* Creates code fixing commands for rules.
*/
class RuleFixer {
/**
* The source code object representing the text to be fixed.
* @type {SourceCode}
*/
#sourceCode;
/**
* Creates a new instance.
* @param {Object} options The options for the fixer.
* @param {SourceCode} options.sourceCode The source code object representing the text to be fixed.
*/
constructor({ sourceCode }) {
this.#sourceCode = sourceCode;
}
/**
* Creates a fix command that inserts text after the given node or token.
* The fix is not applied until applyFixes() is called.
* @param {ASTNode|Token} nodeOrToken The node or token to insert after.
* @param {string} text The text to insert.
* @returns {Object} The fix command.
*/
insertTextAfter(nodeOrToken, text) {
const range = this.#sourceCode.getRange(nodeOrToken);
return this.insertTextAfterRange(range, text);
}
/**
* Creates a fix command that inserts text after the specified range in the source text.
* The fix is not applied until applyFixes() is called.
* @param {int[]} range The range to replace, first item is start of range, second
* is end of range.
* @param {string} text The text to insert.
* @returns {Object} The fix command.
*/
insertTextAfterRange(range, text) {
return insertTextAt(range[1], text);
}
/**
* Creates a fix command that inserts text before the given node or token.
* The fix is not applied until applyFixes() is called.
* @param {ASTNode|Token} nodeOrToken The node or token to insert before.
* @param {string} text The text to insert.
* @returns {Object} The fix command.
*/
insertTextBefore(nodeOrToken, text) {
const range = this.#sourceCode.getRange(nodeOrToken);
return this.insertTextBeforeRange(range, text);
}
/**
* Creates a fix command that inserts text before the specified range in the source text.
* The fix is not applied until applyFixes() is called.
* @param {int[]} range The range to replace, first item is start of range, second
* is end of range.
* @param {string} text The text to insert.
* @returns {Object} The fix command.
*/
insertTextBeforeRange(range, text) {
return insertTextAt(range[0], text);
}
/**
* Creates a fix command that replaces text at the node or token.
* The fix is not applied until applyFixes() is called.
* @param {ASTNode|Token} nodeOrToken The node or token to remove.
* @param {string} text The text to insert.
* @returns {Object} The fix command.
*/
replaceText(nodeOrToken, text) {
const range = this.#sourceCode.getRange(nodeOrToken);
return this.replaceTextRange(range, text);
}
/**
* Creates a fix command that replaces text at the specified range in the source text.
* The fix is not applied until applyFixes() is called.
* @param {int[]} range The range to replace, first item is start of range, second
* is end of range.
* @param {string} text The text to insert.
* @returns {Object} The fix command.
*/
replaceTextRange(range, text) {
return {
range,
text,
};
}
/**
* Creates a fix command that removes the node or token from the source.
* The fix is not applied until applyFixes() is called.
* @param {ASTNode|Token} nodeOrToken The node or token to remove.
* @returns {Object} The fix command.
*/
remove(nodeOrToken) {
const range = this.#sourceCode.getRange(nodeOrToken);
return this.removeRange(range);
}
/**
* Creates a fix command that removes the specified range of text from the source.
* The fix is not applied until applyFixes() is called.
* @param {int[]} range The range to remove, first item is start of range, second
* is end of range.
* @returns {Object} The fix command.
*/
removeRange(range) {
return {
range,
text: "",
};
}
}
module.exports = { RuleFixer };