angular-cn/tools/build/dartanalyzer.js

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var Q = require('q');
var readline = require('readline');
var spawn = require('child_process').spawn;
var path = require('path');
var glob = require('glob');
var fs = require('fs');
var travisFoldStart = require('../travis/travis-fold');
var util = require('./util');
var yaml = require('js-yaml');
module.exports = function(gulp, plugins, config) {
return function() {
var travisFoldEnd = travisFoldStart(`dartanalyzer-${config.use_ddc ? 'ddc' : ''}-${config.dest}`);
var tempFile = '_analyzer.dart';
return util.forEachSubDirSequential(config.dest, function(dir) {
var pubspecContents = fs.readFileSync(path.join(dir, 'pubspec.yaml'));
var pubspec = yaml.safeLoad(pubspecContents);
var packageName = pubspec.name;
var libFiles = [].slice.call(glob.sync('lib/**/*.dart', {cwd: dir}));
var webFiles = [].slice.call(glob.sync('web/**/*.dart', {cwd: dir}));
var testFiles = [].slice.call(glob.sync('test/**/*_spec.dart', {cwd: dir}));
var analyzeFile = ['library _analyzer;'];
libFiles.concat(testFiles).concat(webFiles).forEach(function(fileName, index) {
if (fileName !== tempFile && fileName.indexOf("/packages/") === -1) {
if (fileName.indexOf('lib') == 0) {
fileName = 'package:' + packageName + '/' + path.relative('lib', fileName).replace(/\\/g, '/');
}
analyzeFile.push('import "' + fileName + '" as mod' + index + ';');
}
});
fs.writeFileSync(path.join(dir, tempFile), analyzeFile.join('\n'));
var defer = Q.defer();
if (config.use_ddc) {
analyze(dir, defer.makeNodeResolver(), true);
} else {
analyze(dir, defer.makeNodeResolver());
}
return defer.promise;
}).then(travisFoldEnd);
function analyze(dirName, done, useDdc) {
// TODO remove --package-warnings once dartanalyzer handles transitive libraries
var flags = ['--fatal-warnings', '--package-warnings', '--format=machine'];
if (useDdc) {
console.log('Using DDC analyzer to analyze', dirName);
flags.push('--strong');
}
var args = flags.concat(tempFile);
var stream = spawn(config.command, args, {
// inherit stdin and stderr, but filter stdout
stdio: [process.stdin, process.stdout, 'pipe'],
cwd: dirName
});
// Filter out unused imports from our generated file.
// We don't reexports from the generated file
// as this could lead to name clashes when two files
// export the same thing.
var rl = readline.createInterface(
{input: stream.stderr, output: process.stdout, terminal: false});
var hintCount = 0;
var errorCount = 0;
var warningCount = 0;
rl.on('line', function(line) {
if (line == "find: > bin [: No such file or directory") {
//Skip bad output from Dart SDK .bat files on Windows
return;
}
var parsedLine = _AnalyzerOutputLine.parse(line);
if (!parsedLine) {
errorCount++;
console.log('Unexpected output: ' + line);
return;
}
// TODO remove once dartanalyzer handles transitive libraries
// skip errors in third-party packages
if (parsedLine.sourcePath.indexOf(dirName) == -1) {
return;
}
if (parsedLine.shouldIgnore()) {
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return;
}
if (parsedLine.isHint) {
hintCount++;
} else if (parsedLine.isWarning) {
warningCount++;
} else {
errorCount++;
}
console.log(dirName + ':' + parsedLine);
});
stream.on('close', function() {
var error;
var report = [];
if (errorCount > 0) {
report.push(errorCount + ' error(s)');
}
if (warningCount > 0) {
report.push(warningCount + ' warning(s)');
}
if (hintCount > 0) {
report.push(hintCount + ' hint(s)');
}
if (report.length > 0) {
error = 'Dartanalyzer showed ' + report.join(', ');
}
done(error);
});
stream.on('error', function(error) {
done(error);
});
}
};
};
// See https://github.com/dart-lang/analyzer_cli/blob/master/lib/src/error_formatter.dart
function _AnalyzerOutputLine(result) {
this.severity = result[1];
this.errorType = result[2];
this.errorCode = result[3];
this.sourcePath = result[4];
this.lineNum = result[5];
this.colNum = result[6];
this.asciiLineLength = parseInt(result[7], 10);
this.errorMsg = result[8];
this.isError = Boolean(this.severity.match(/ERROR/i));
this.isHint = Boolean(this.severity.match(/INFO/i));
this.isWarning = Boolean(this.severity.match(/WARNING/i));
}
_AnalyzerOutputLine.parse = function(line) {
var result = _AnalyzerOutputLine._analyzerParseRegExp.exec(line);
return result ? new _AnalyzerOutputLine(result) : null;
};
_AnalyzerOutputLine._analyzerParseRegExp =
new RegExp('([^\|]+)\\|' + // #1, severity (NONE, INFO, WARNING, ERROR)
'([^\|]+)\\|' + // #2, errorCode.type (HINT, *_WARNING, *_ERROR, etc)
'([^\|]+)\\|' + // #3, errorCode (UNUSED_IMPORT, UNUSED_CATCH_STACK, etc)
'([^\|]+[^\|\\\\])\\|' + // #4, sourcePath with '|' chars backslash-escaped.
'([^\|]+)\\|' + // #5, line number
'([^\|]+)\\|' + // #6, column number
'([^\|]+)\\|' + // #7, length of the ASCII line to draw
'(.*)$'); // #8, error message
/* Maps file path (as string) to file source (an array of strings, one per line). */
_AnalyzerOutputLine.cache = {};
_AnalyzerOutputLine.ERR_NO_SOURCE = '(Could not find source line).';
_AnalyzerOutputLine.prototype = {
toString: function() {
var sourceLine = this._getSourceLine();
var lineText = _AnalyzerOutputLine.ERR_NO_SOURCE;
if (sourceLine) {
var repeat = function(str, num) {
if (str.repeat) return str.repeat(num);
return Array.prototype.join.call({length: num}, str);
};
lineText =
'\n' + sourceLine + '\n' + repeat(' ', this.colNum) + repeat('^', this.asciiLineLength);
}
return '[' + this.severity + '] ' + this.errorMsg + ' (' + this.sourcePath + ', line ' +
this.lineNum + ', col ' + this.colNum + ')' + lineText;
},
shouldIgnore: function() {
if (this.errorCode.match(/UNUSED_IMPORT/i)) {
if (this.sourcePath.match(/_analyzer\.dart/)) {
return true;
}
// TODO remove it once ts2dart propertly generates abstract getters
if (this.errorMsg.match(/unimplemented/)) {
return true;
}
}
if (this.errorCode.match(/DEPRECATED_MEMBER_USE/i)) {
return true;
}
// TODO: https://github.com/angular/ts2dart/issues/168
if (this.errorCode.match(/UNUSED_CATCH_STACK/i)) {
return true;
}
// Don't worry about hints in generated files.
if (this.isHint && this.sourcePath.match(/generated/i)) {
return true;
}
return false;
},
// Reads the source file for the Analyzer output, caching it for future use.
_getSourceLine: function() {
var cache = _AnalyzerOutputLine.cache;
var sourceLines = null;
if (cache.hasOwnProperty(this.sourcePath)) {
sourceLines = cache[this.sourcePath];
} else {
try {
sourceLines = String(fs.readFileSync(this.sourcePath));
sourceLines = sourceLines.split('\n');
} catch (e) {
sourceLines = null;
} finally {
// Even if this fails, cache `null` so we don't try again.
cache[this.sourcePath] = sourceLines;
}
}
return sourceLines && this.lineNum <= sourceLines.length ? sourceLines[this.lineNum - 1] : null;
}
};