diff options
Diffstat (limited to 'tools/node_modules/eslint/lib/rules/space-infix-ops.js')
-rw-r--r-- | tools/node_modules/eslint/lib/rules/space-infix-ops.js | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/tools/node_modules/eslint/lib/rules/space-infix-ops.js b/tools/node_modules/eslint/lib/rules/space-infix-ops.js new file mode 100644 index 0000000000..b92c889c7f --- /dev/null +++ b/tools/node_modules/eslint/lib/rules/space-infix-ops.js @@ -0,0 +1,167 @@ +/** + * @fileoverview Require spaces around infix operators + * @author Michael Ficarra + */ +"use strict"; + +//------------------------------------------------------------------------------ +// Rule Definition +//------------------------------------------------------------------------------ + +module.exports = { + meta: { + docs: { + description: "require spacing around infix operators", + category: "Stylistic Issues", + recommended: false + }, + + fixable: "whitespace", + + schema: [ + { + type: "object", + properties: { + int32Hint: { + type: "boolean" + } + }, + additionalProperties: false + } + ] + }, + + create(context) { + const int32Hint = context.options[0] ? context.options[0].int32Hint === true : false; + + const OPERATORS = [ + "*", "/", "%", "+", "-", "<<", ">>", ">>>", "<", "<=", ">", ">=", "in", + "instanceof", "==", "!=", "===", "!==", "&", "^", "|", "&&", "||", "=", + "+=", "-=", "*=", "/=", "%=", "<<=", ">>=", ">>>=", "&=", "^=", "|=", + "?", ":", ",", "**" + ]; + + const sourceCode = context.getSourceCode(); + + /** + * Returns the first token which violates the rule + * @param {ASTNode} left - The left node of the main node + * @param {ASTNode} right - The right node of the main node + * @returns {Object} The violator token or null + * @private + */ + function getFirstNonSpacedToken(left, right) { + const tokens = sourceCode.getTokensBetween(left, right, 1); + + for (let i = 1, l = tokens.length - 1; i < l; ++i) { + const op = tokens[i]; + + if ( + (op.type === "Punctuator" || op.type === "Keyword") && + OPERATORS.indexOf(op.value) >= 0 && + (tokens[i - 1].range[1] >= op.range[0] || op.range[1] >= tokens[i + 1].range[0]) + ) { + return op; + } + } + return null; + } + + /** + * Reports an AST node as a rule violation + * @param {ASTNode} mainNode - The node to report + * @param {Object} culpritToken - The token which has a problem + * @returns {void} + * @private + */ + function report(mainNode, culpritToken) { + context.report({ + node: mainNode, + loc: culpritToken.loc.start, + message: "Infix operators must be spaced.", + fix(fixer) { + const previousToken = sourceCode.getTokenBefore(culpritToken); + const afterToken = sourceCode.getTokenAfter(culpritToken); + let fixString = ""; + + if (culpritToken.range[0] - previousToken.range[1] === 0) { + fixString = " "; + } + + fixString += culpritToken.value; + + if (afterToken.range[0] - culpritToken.range[1] === 0) { + fixString += " "; + } + + return fixer.replaceText(culpritToken, fixString); + } + }); + } + + /** + * Check if the node is binary then report + * @param {ASTNode} node node to evaluate + * @returns {void} + * @private + */ + function checkBinary(node) { + const leftNode = (node.left.typeAnnotation) ? node.left.typeAnnotation : node.left; + const rightNode = node.right; + + const nonSpacedNode = getFirstNonSpacedToken(leftNode, rightNode); + + if (nonSpacedNode) { + if (!(int32Hint && sourceCode.getText(node).endsWith("|0"))) { + report(node, nonSpacedNode); + } + } + } + + /** + * Check if the node is conditional + * @param {ASTNode} node node to evaluate + * @returns {void} + * @private + */ + function checkConditional(node) { + const nonSpacedConsequesntNode = getFirstNonSpacedToken(node.test, node.consequent); + const nonSpacedAlternateNode = getFirstNonSpacedToken(node.consequent, node.alternate); + + if (nonSpacedConsequesntNode) { + report(node, nonSpacedConsequesntNode); + } else if (nonSpacedAlternateNode) { + report(node, nonSpacedAlternateNode); + } + } + + /** + * Check if the node is a variable + * @param {ASTNode} node node to evaluate + * @returns {void} + * @private + */ + function checkVar(node) { + const leftNode = (node.id.typeAnnotation) ? node.id.typeAnnotation : node.id; + const rightNode = node.init; + + if (rightNode) { + const nonSpacedNode = getFirstNonSpacedToken(leftNode, rightNode); + + if (nonSpacedNode) { + report(node, nonSpacedNode); + } + } + } + + return { + AssignmentExpression: checkBinary, + AssignmentPattern: checkBinary, + BinaryExpression: checkBinary, + LogicalExpression: checkBinary, + ConditionalExpression: checkConditional, + VariableDeclarator: checkVar + }; + + } +}; |