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[dotfiles/.git] / .config / coc / extensions / node_modules / coc-prettier / node_modules / eslint / lib / rules / lines-between-class-members.js

diff --git a/.config/coc/extensions/node_modules/coc-prettier/node_modules/eslint/lib/rules/lines-between-class-members.js b/.config/coc/extensions/node_modules/coc-prettier/node_modules/eslint/lib/rules/lines-between-class-members.js
new file mode 100644 (file)
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+++ b/.config/coc/extensions/node_modules/coc-prettier/node_modules/eslint/lib/rules/lines-between-class-members.js
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+/**
+ * @fileoverview Rule to check empty newline between class members
+ * @author 薛定谔的猫<hh_2013@foxmail.com>
+ */
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "require or disallow an empty line between class members",
+            category: "Stylistic Issues",
+            recommended: false,
+            url: "https://eslint.org/docs/rules/lines-between-class-members"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                enum: ["always", "never"]
+            },
+            {
+                type: "object",
+                properties: {
+                    exceptAfterSingleLine: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+        messages: {
+            never: "Unexpected blank line between class members.",
+            always: "Expected blank line between class members."
+        }
+    },
+
+    create(context) {
+
+        const options = [];
+
+        options[0] = context.options[0] || "always";
+        options[1] = context.options[1] || { exceptAfterSingleLine: false };
+
+        const sourceCode = context.getSourceCode();
+
+        /**
+         * Return the last token among the consecutive tokens that have no exceed max line difference in between, before the first token in the next member.
+         * @param {Token} prevLastToken The last token in the previous member node.
+         * @param {Token} nextFirstToken The first token in the next member node.
+         * @param {number} maxLine The maximum number of allowed line difference between consecutive tokens.
+         * @returns {Token} The last token among the consecutive tokens.
+         */
+        function findLastConsecutiveTokenAfter(prevLastToken, nextFirstToken, maxLine) {
+            const after = sourceCode.getTokenAfter(prevLastToken, { includeComments: true });
+
+            if (after !== nextFirstToken && after.loc.start.line - prevLastToken.loc.end.line <= maxLine) {
+                return findLastConsecutiveTokenAfter(after, nextFirstToken, maxLine);
+            }
+            return prevLastToken;
+        }
+
+        /**
+         * Return the first token among the consecutive tokens that have no exceed max line difference in between, after the last token in the previous member.
+         * @param {Token} nextFirstToken The first token in the next member node.
+         * @param {Token} prevLastToken The last token in the previous member node.
+         * @param {number} maxLine The maximum number of allowed line difference between consecutive tokens.
+         * @returns {Token} The first token among the consecutive tokens.
+         */
+        function findFirstConsecutiveTokenBefore(nextFirstToken, prevLastToken, maxLine) {
+            const before = sourceCode.getTokenBefore(nextFirstToken, { includeComments: true });
+
+            if (before !== prevLastToken && nextFirstToken.loc.start.line - before.loc.end.line <= maxLine) {
+                return findFirstConsecutiveTokenBefore(before, prevLastToken, maxLine);
+            }
+            return nextFirstToken;
+        }
+
+        /**
+         * Checks if there is a token or comment between two tokens.
+         * @param {Token} before The token before.
+         * @param {Token} after The token after.
+         * @returns {boolean} True if there is a token or comment between two tokens.
+         */
+        function hasTokenOrCommentBetween(before, after) {
+            return sourceCode.getTokensBetween(before, after, { includeComments: true }).length !== 0;
+        }
+
+        return {
+            ClassBody(node) {
+                const body = node.body;
+
+                for (let i = 0; i < body.length - 1; i++) {
+                    const curFirst = sourceCode.getFirstToken(body[i]);
+                    const curLast = sourceCode.getLastToken(body[i]);
+                    const nextFirst = sourceCode.getFirstToken(body[i + 1]);
+                    const isMulti = !astUtils.isTokenOnSameLine(curFirst, curLast);
+                    const skip = !isMulti && options[1].exceptAfterSingleLine;
+                    const beforePadding = findLastConsecutiveTokenAfter(curLast, nextFirst, 1);
+                    const afterPadding = findFirstConsecutiveTokenBefore(nextFirst, curLast, 1);
+                    const isPadded = afterPadding.loc.start.line - beforePadding.loc.end.line > 1;
+                    const hasTokenInPadding = hasTokenOrCommentBetween(beforePadding, afterPadding);
+                    const curLineLastToken = findLastConsecutiveTokenAfter(curLast, nextFirst, 0);
+
+                    if ((options[0] === "always" && !skip && !isPadded) ||
+                        (options[0] === "never" && isPadded)) {
+                        context.report({
+                            node: body[i + 1],
+                            messageId: isPadded ? "never" : "always",
+                            fix(fixer) {
+                                if (hasTokenInPadding) {
+                                    return null;
+                                }
+                                return isPadded
+                                    ? fixer.replaceTextRange([beforePadding.range[1], afterPadding.range[0]], "\n")
+                                    : fixer.insertTextAfter(curLineLastToken, "\n");
+                            }
+                        });
+                    }
+                }
+            }
+        };
+    }
+};