Add rulesets

.eslintrc.js

@@ -13,6 +13,7 @@ module.exports = {
   rules: {
     'consistent-return': 'off',
     'import/no-dynamic-require': 'off',
+    'import/no-extraneous-dependencies': ['error', { optionalDependencies: true }],
     'global-require': 'off',
     'no-bitwise': 'off',
     'no-console': 'off',

.travis.yml

@@ -2,3 +2,7 @@ language: node_js
 
 node_js:
   - "stable"
+
+script:
+  - npm run lint
+  - npm test

conf/rulesets/solhint-all.js

@@ -0,0 +1,12 @@
+const { loadRules } = require('../../lib/load-rules')
+
+const rulesConstants = loadRules()
+const enabledRules = {}
+
+rulesConstants.forEach(rule => {
+  if (!rule.meta.deprecated) {
+    enabledRules[rule.ruleId] = rule.meta.defaultSetup
+  }
+})
+
+module.exports = { rules: enabledRules }

conf/rulesets/solhint-default.js

@@ -0,0 +1,12 @@
+const { loadRules } = require('../../lib/load-rules')
+
+const rulesConstants = loadRules()
+const enabledRules = {}
+
+rulesConstants.forEach(rule => {
+  if (!rule.meta.deprecated && rule.meta.isDefault) {
+    enabledRules[rule.ruleId] = rule.meta.defaultSetup
+  }
+})
+
+module.exports = { rules: enabledRules }

conf/rulesets/solhint-recommended.js

@@ -0,0 +1,12 @@
+const { loadRules } = require('../../lib/load-rules')
+
+const rulesConstants = loadRules()
+const enabledRules = {}
+
+rulesConstants.forEach(rule => {
+  if (!rule.meta.deprecated && rule.meta.recommended) {
+    enabledRules[rule.ruleId] = rule.meta.defaultSetup
+  }
+})
+
+module.exports = { rules: enabledRules }

lib/common/ajv.js

@@ -0,0 +1,15 @@
+const Ajv = require('ajv')
+const metaSchema = require('ajv/lib/refs/json-schema-draft-04.json')
+
+const ajv = new Ajv({
+  meta: false,
+  validateSchema: false,
+  missingRefs: 'ignore',
+  verbose: true,
+  schemaId: 'auto'
+})
+
+ajv.addMetaSchema(metaSchema)
+ajv._opts.defaultMeta = metaSchema.id
+
+module.exports = ajv

lib/common/errors.js

@@ -1,10 +1,10 @@
-class FileNotExistsError extends Error {
-  constructor(data) {
-    const { message } = data
+class ConfigMissingError extends Error {
+  constructor(configName) {
+    const message = `Failed to load config "${configName}" to extend from.`
     super(message)
   }
 }
 
 module.exports = {
-  FileNotExistsError
+  ConfigMissingError
 }

lib/common/utils.js

@@ -1,18 +1,33 @@
-module.exports = {
-  getLocFromIndex(text, index) {
-    let line = 1
-    let column = 0
-    let i = 0
-    while (i < index) {
-      if (text[i] === '\n') {
-        line++
-        column = 0
-      } else {
-        column++
-      }
-      i++
-    }
+const fs = require('fs')
+const path = require('path')
 
-    return { line, column }
+const getLocFromIndex = (text, index) => {
+  let line = 1
+  let column = 0
+  let i = 0
+  while (i < index) {
+    if (text[i] === '\n') {
+      line++
+      column = 0
+    } else {
+      column++
+    }
+    i++
   }
+
+  return { line, column }
+}
+
+const walkSync = (dir, filelist = []) => {
+  fs.readdirSync(dir).forEach(file => {
+    filelist = fs.statSync(path.join(dir, file)).isDirectory()
+      ? walkSync(path.join(dir, file), filelist)
+      : filelist.concat(path.join(dir, file))
+  })
+  return filelist
+}
+
+module.exports = {
+  getLocFromIndex,
+  walkSync
 }

lib/config/config-file.js

@@ -0,0 +1,89 @@
+const path = require('path')
+const fs = require('fs')
+const _ = require('lodash')
+const cosmiconfig = require('cosmiconfig')
+const { ConfigMissingError } = require('../common/errors')
+const packageJson = require('../../package.json')
+
+const getSolhintCoreConfigPath = name => {
+  if (name === 'solhint:recommended') {
+    return path.resolve(__dirname, '../../conf/rulesets/solhint-recommended.js')
+  }
+
+  if (name === 'solhint:all') {
+    return path.resolve(__dirname, '../../conf/rulesets/solhint-all.js')
+  }
+
+  if (name === 'solhint:default') {
+    return path.resolve(__dirname, '../../conf/rulesets/solhint-default.js')
+  }
+
+  throw new ConfigMissingError(name)
+}
+
+const createEmptyConfig = () => ({
+  excludedFiles: {},
+  extends: {},
+  globals: {},
+  env: {},
+  rules: {},
+  parserOptions: {}
+})
+
+const loadConfig = () => {
+  // Use cosmiconfig to get the config from different sources
+  const appDirectory = fs.realpathSync(process.cwd())
+  const moduleName = packageJson.name
+  const cosmiconfigOptions = {
+    searchPlaces: [
+      'package.json',
+      `.${moduleName}.json`,
+      `.${moduleName}rc`,
+      `.${moduleName}rc.json`,
+      `.${moduleName}rc.yaml`,
+      `.${moduleName}rc.yml`,
+      `.${moduleName}rc.js`,
+      `${moduleName}.config.js`
+    ]
+  }
+
+  const explorer = cosmiconfig(moduleName, cosmiconfigOptions)
+  const searchedFor = explorer.searchSync(appDirectory)
+  return searchedFor.config || createEmptyConfig()
+}
+
+const configGetter = path => {
+  let extensionPath = null
+
+  if (path.startsWith('solhint:')) {
+    extensionPath = getSolhintCoreConfigPath(path)
+  } else {
+    // Load packages with rules
+    extensionPath = `solhint-config-${path}`
+  }
+
+  const extensionConfig = require(extensionPath)
+
+  return extensionConfig
+}
+
+const applyExtends = (config, getter = configGetter) => {
+  if (!Array.isArray(config.extends)) {
+    config.extends = [config.extends]
+  }
+
+  return config.extends.reduceRight((previousValue, parentPath) => {
+    try {
+      const extensionConfig = getter(parentPath)
+      return _.merge({}, extensionConfig, previousValue)
+    } catch (e) {
+      throw new ConfigMissingError(parentPath)
+    }
+  }, config)
+}
+
+module.exports = {
+  applyExtends,
+  configGetter,
+  loadConfig
+}

lib/config/config-schema.js

@@ -0,0 +1,16 @@
+const baseConfigProperties = {
+  rules: { type: 'object' },
+  excludedFiles: { type: 'array' },
+  extends: { type: 'array' },
+  globals: { type: 'object' },
+  env: { type: 'object' },
+  parserOptions: { type: 'object' }
+}
+
+const configSchema = {
+  type: 'object',
+  properties: baseConfigProperties,
+  additionalProperties: false
+}
+
+module.exports = configSchema

lib/config/config-validator.js

@@ -0,0 +1,119 @@
+const _ = require('lodash')
+const ajv = require('../common/ajv')
+const configSchema = require('./config-schema')
+const { loadRule } = require('../load-rules')
+
+let validateSchema
+
+const validSeverityMap = ['error', 'warn']
+
+const invalidSeverityMap = ['off']
+
+const defaultSchemaValueForRules = Object.freeze({
+  oneOf: [{ type: 'string', enum: [...validSeverityMap, ...invalidSeverityMap] }, { const: false }]
+})
+
+const validateRules = rulesConfig => {
+  if (!rulesConfig) {
+    return
+  }
+
+  const errorsSchema = []
+  const errorsRules = []
+  const rulesConfigKeys = Object.keys(rulesConfig)
+
+  for (const ruleId of rulesConfigKeys) {
+    const ruleInstance = loadRule(ruleId)
+    const ruleValue = rulesConfig[ruleId]
+
+    if (ruleInstance === undefined) {
+      errorsRules.push(ruleId)
+      continue
+    }
+
+    // Inject default schema
+    if (ruleInstance.meta.schema.length) {
+      let i
+      for (i = 0; i < ruleInstance.meta.schema.length; i++) {
+        const schema = ruleInstance.meta.schema[i]
+        if (schema.type === 'array') {
+          ruleInstance.meta.schema[i] = _.cloneDeep(defaultSchemaValueForRules)
+          ruleInstance.meta.schema[i].oneOf.push(schema)
+          ruleInstance.meta.schema[i].oneOf[2].items.unshift(defaultSchemaValueForRules)
+        }
+      }
+    } else {
+      ruleInstance.meta.schema.push(defaultSchemaValueForRules)
+    }
+
+    // Validate rule schema
+    validateSchema = ajv.compile(ruleInstance.meta.schema[0])
+
+    if (!validateSchema(ruleValue)) {
+      errorsSchema.push({ ruleId, defaultSetup: ruleInstance.meta.defaultSetup })
+    }
+  }
+
+  if (errorsRules.length) {
+    throw new Error(errorsRules.map(error => `\tRule ${error} doesn't exist.\n`).join(''))
+  }
+
+  if (errorsSchema.length) {
+    throw new Error(
+      errorsSchema
+        .map(
+          (ruleId, defaultSetup) =>
+            `\tRule ${ruleId} have an invalid schema.\n\tThe default setup is: ${JSON.stringify(
+              defaultSetup
+            )}`
+        )
+        .join('')
+    )
+  }
+}
+
+const formatErrors = errors =>
+  errors
+    .map(error => {
+      if (error.keyword === 'additionalProperties') {
+        const formattedPropertyPath = error.dataPath.length
+          ? `${error.dataPath.slice(1)}.${error.params.additionalProperty}`
+          : error.params.additionalProperty
+
+        return `Unexpected top-level property "${formattedPropertyPath}"`
+      }
+      if (error.keyword === 'type') {
+        const formattedField = error.dataPath.slice(1)
+        const formattedExpectedType = Array.isArray(error.schema)
+          ? error.schema.join('/')
+          : error.schema
+        const formattedValue = JSON.stringify(error.data)
+
+        return `Property "${formattedField}" is the wrong type (expected ${formattedExpectedType} but got \`${formattedValue}\`)`
+      }
+
+      const field = error.dataPath[0] === '.' ? error.dataPath.slice(1) : error.dataPath
+
+      return `"${field}" ${error.message}. Value: ${JSON.stringify(error.data)}`
+    })
+    .map(message => `\t- ${message}.\n`)
+    .join('')
+
+const validateConfigSchema = config => {
+  validateSchema = validateSchema || ajv.compile(configSchema)
+
+  if (!validateSchema(config)) {
+    throw new Error(`Solhint configuration is invalid:\n${formatErrors(validateSchema.errors)}`)
+  }
+}
+
+const validate = config => {
+  validateConfigSchema(config)
+  validateRules(config.rules)
+}
+
+module.exports = {
+  validate,
+  validSeverityMap,
+  defaultSchemaValueForRules
+}