Начат фронтенд

node_modules/postcss/lib/input.js

@@ -1,39 +1,20 @@
 'use strict'
 
-let { nanoid } = require('nanoid/non-secure')
-let { isAbsolute, resolve } = require('path')
 let { SourceMapConsumer, SourceMapGenerator } = require('source-map-js')
 let { fileURLToPath, pathToFileURL } = require('url')
+let { resolve, isAbsolute } = require('path')
+let { nanoid } = require('nanoid/non-secure')
 
+let terminalHighlight = require('./terminal-highlight')
 let CssSyntaxError = require('./css-syntax-error')
 let PreviousMap = require('./previous-map')
-let terminalHighlight = require('./terminal-highlight')
 
-let lineToIndexCache = Symbol('lineToIndexCache')
+let fromOffsetCache = Symbol('fromOffsetCache')
 
 let sourceMapAvailable = Boolean(SourceMapConsumer && SourceMapGenerator)
 let pathAvailable = Boolean(resolve && isAbsolute)
 
-function getLineToIndex(input) {
-  if (input[lineToIndexCache]) return input[lineToIndexCache]
-  let lines = input.css.split('\n')
-  let lineToIndex = new Array(lines.length)
-  let prevIndex = 0
-
-  for (let i = 0, l = lines.length; i < l; i++) {
-    lineToIndex[i] = prevIndex
-    prevIndex += lines[i].length + 1
-  }
-
-  input[lineToIndexCache] = lineToIndex
-  return lineToIndex
-}
-
 class Input {
-  get from() {
-    return this.file || this.id
-  }
-
   constructor(css, opts = {}) {
     if (
       css === null ||
@@ -52,9 +33,6 @@ class Input {
       this.hasBOM = false
     }
 
-    this.document = this.css
-    if (opts.document) this.document = opts.document.toString()
-
     if (opts.from) {
       if (
         !pathAvailable ||
@@ -82,86 +60,23 @@ class Input {
     if (this.map) this.map.file = this.from
   }
 
-  error(message, line, column, opts = {}) {
-    let endColumn, endLine, endOffset, offset, result
-
-    if (line && typeof line === 'object') {
-      let start = line
-      let end = column
-      if (typeof start.offset === 'number') {
-        offset = start.offset
-        let pos = this.fromOffset(offset)
-        line = pos.line
-        column = pos.col
-      } else {
-        line = start.line
-        column = start.column
-        offset = this.fromLineAndColumn(line, column)
-      }
-      if (typeof end.offset === 'number') {
-        endOffset = end.offset
-        let pos = this.fromOffset(endOffset)
-        endLine = pos.line
-        endColumn = pos.col
-      } else {
-        endLine = end.line
-        endColumn = end.column
-        endOffset = this.fromLineAndColumn(end.line, end.column)
-      }
-    } else if (!column) {
-      offset = line
-      let pos = this.fromOffset(offset)
-      line = pos.line
-      column = pos.col
-    } else {
-      offset = this.fromLineAndColumn(line, column)
-    }
-
-    let origin = this.origin(line, column, endLine, endColumn)
-    if (origin) {
-      result = new CssSyntaxError(
-        message,
-        origin.endLine === undefined
-          ? origin.line
-          : { column: origin.column, line: origin.line },
-        origin.endLine === undefined
-          ? origin.column
-          : { column: origin.endColumn, line: origin.endLine },
-        origin.source,
-        origin.file,
-        opts.plugin
-      )
-    } else {
-      result = new CssSyntaxError(
-        message,
-        endLine === undefined ? line : { column, line },
-        endLine === undefined ? column : { column: endColumn, line: endLine },
-        this.css,
-        this.file,
-        opts.plugin
-      )
-    }
-
-    result.input = { column, endColumn, endLine, endOffset, line, offset, source: this.css }
-    if (this.file) {
-      if (pathToFileURL) {
-        result.input.url = pathToFileURL(this.file).toString()
-      }
-      result.input.file = this.file
-    }
-
-    return result
-  }
-
-  fromLineAndColumn(line, column) {
-    let lineToIndex = getLineToIndex(this)
-    let index = lineToIndex[line - 1]
-    return index + column - 1
-  }
-
   fromOffset(offset) {
-    let lineToIndex = getLineToIndex(this)
-    let lastLine = lineToIndex[lineToIndex.length - 1]
+    let lastLine, lineToIndex
+    if (!this[fromOffsetCache]) {
+      let lines = this.css.split('\n')
+      lineToIndex = new Array(lines.length)
+      let prevIndex = 0
+
+      for (let i = 0, l = lines.length; i < l; i++) {
+        lineToIndex[i] = prevIndex
+        prevIndex += lines[i].length + 1
+      }
+
+      this[fromOffsetCache] = lineToIndex
+    } else {
+      lineToIndex = this[fromOffsetCache]
+    }
+    lastLine = lineToIndex[lineToIndex.length - 1]
 
     let min = 0
     if (offset >= lastLine) {
@@ -182,28 +97,85 @@ class Input {
       }
     }
     return {
-      col: offset - lineToIndex[min] + 1,
-      line: min + 1
+      line: min + 1,
+      col: offset - lineToIndex[min] + 1
     }
   }
 
-  mapResolve(file) {
-    if (/^\w+:\/\//.test(file)) {
-      return file
+  error(message, line, column, opts = {}) {
+    let result, endLine, endColumn
+
+    if (line && typeof line === 'object') {
+      let start = line
+      let end = column
+      if (typeof start.offset === 'number') {
+        let pos = this.fromOffset(start.offset)
+        line = pos.line
+        column = pos.col
+      } else {
+        line = start.line
+        column = start.column
+      }
+      if (typeof end.offset === 'number') {
+        let pos = this.fromOffset(end.offset)
+        endLine = pos.line
+        endColumn = pos.col
+      } else {
+        endLine = end.line
+        endColumn = end.column
+      }
+    } else if (!column) {
+      let pos = this.fromOffset(line)
+      line = pos.line
+      column = pos.col
     }
-    return resolve(this.map.consumer().sourceRoot || this.map.root || '.', file)
+
+    let origin = this.origin(line, column, endLine, endColumn)
+    if (origin) {
+      result = new CssSyntaxError(
+        message,
+        origin.endLine === undefined
+          ? origin.line
+          : { line: origin.line, column: origin.column },
+        origin.endLine === undefined
+          ? origin.column
+          : { line: origin.endLine, column: origin.endColumn },
+        origin.source,
+        origin.file,
+        opts.plugin
+      )
+    } else {
+      result = new CssSyntaxError(
+        message,
+        endLine === undefined ? line : { line, column },
+        endLine === undefined ? column : { line: endLine, column: endColumn },
+        this.css,
+        this.file,
+        opts.plugin
+      )
+    }
+
+    result.input = { line, column, endLine, endColumn, source: this.css }
+    if (this.file) {
+      if (pathToFileURL) {
+        result.input.url = pathToFileURL(this.file).toString()
+      }
+      result.input.file = this.file
+    }
+
+    return result
   }
 
   origin(line, column, endLine, endColumn) {
     if (!this.map) return false
     let consumer = this.map.consumer()
 
-    let from = consumer.originalPositionFor({ column, line })
+    let from = consumer.originalPositionFor({ line, column })
     if (!from.source) return false
 
     let to
     if (typeof endLine === 'number') {
-      to = consumer.originalPositionFor({ column: endColumn, line: endLine })
+      to = consumer.originalPositionFor({ line: endLine, column: endColumn })
     }
 
     let fromUrl
@@ -218,11 +190,11 @@ class Input {
     }
 
     let result = {
-      column: from.column,
-      endColumn: to && to.column,
-      endLine: to && to.line,
+      url: fromUrl.toString(),
       line: from.line,
-      url: fromUrl.toString()
+      column: from.column,
+      endLine: to && to.line,
+      endColumn: to && to.column
     }
 
     if (fromUrl.protocol === 'file:') {
@@ -240,6 +212,17 @@ class Input {
     return result
   }
 
+  mapResolve(file) {
+    if (/^\w+:\/\//.test(file)) {
+      return file
+    }
+    return resolve(this.map.consumer().sourceRoot || this.map.root || '.', file)
+  }
+
+  get from() {
+    return this.file || this.id
+  }
+
   toJSON() {
     let json = {}
     for (let name of ['hasBOM', 'css', 'file', 'id']) {