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/**
* @fileoverview An object that creates fix commands for rules.
* @author Nicholas C. Zakas
*/
"use strict";
//------------------------------------------------------------------------------
// 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.
*/
const ruleFixer = Object.freeze({
/**
* 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) {
return this.insertTextAfterRange(nodeOrToken.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) {
return this.insertTextBeforeRange(nodeOrToken.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) {
return this.replaceTextRange(nodeOrToken.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) {
return this.removeRange(nodeOrToken.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;