Mercurial Repositories > eric / file comparison
comparison: eric7/Plugins/CheckerPlugins/SyntaxChecker/jsCheckSyntax.py
eric7/Plugins/CheckerPlugins/SyntaxChecker/jsCheckSyntax.py
- branch
- eric7
- changeset 8312
- 800c432b34c8
- parent 8217
- 385f60c94548
- child 8650
- 100726f55a9a
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| 8311:4e8b98454baa | 8312:800c432b34c8 |
|---|---|
| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2014 - 2021 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Module implementing the syntax check for JavaScript. | |
| 8 """ | |
| 9 | |
| 10 import queue | |
| 11 import os | |
| 12 import sys | |
| 13 import multiprocessing | |
| 14 | |
| 15 | |
| 16 def initService(): | |
| 17 """ | |
| 18 Initialize the service and return the entry point. | |
| 19 | |
| 20 @return the entry point for the background client (function) | |
| 21 """ | |
| 22 path = __file__ | |
| 23 for _ in range(4): | |
| 24 path = os.path.dirname(path) | |
| 25 sys.path.insert(2, os.path.join(path, "ThirdParty", "Jasy")) | |
| 26 return jsSyntaxCheck | |
| 27 | |
| 28 | |
| 29 def initBatchService(): | |
| 30 """ | |
| 31 Initialize the batch service and return the entry point. | |
| 32 | |
| 33 @return the entry point for the background client (function) | |
| 34 """ | |
| 35 return jsSyntaxBatchCheck | |
| 36 | |
| 37 | |
| 38 def normalizeCode(codestring): | |
| 39 """ | |
| 40 Function to normalize the given code. | |
| 41 | |
| 42 @param codestring code to be normalized (string) | |
| 43 @return normalized code (string) | |
| 44 """ | |
| 45 codestring = codestring.replace("\r\n", "\n").replace("\r", "\n") | |
| 46 | |
| 47 if codestring and codestring[-1] != '\n': | |
| 48 codestring += '\n' | |
| 49 | |
| 50 return codestring | |
| 51 | |
| 52 | |
| 53 def jsSyntaxCheck(file, codestring): | |
| 54 """ | |
| 55 Function to check a Javascript source file for syntax errors. | |
| 56 | |
| 57 @param file source filename (string) | |
| 58 @param codestring string containing the code to check (string) | |
| 59 @return dictionary with the keys 'error' and 'warnings' which | |
| 60 hold a list containing details about the error/ warnings | |
| 61 (file name, line number, column, codestring (only at syntax | |
| 62 errors), the message, a list with arguments for the message) | |
| 63 """ | |
| 64 return __jsSyntaxCheck(file, codestring) | |
| 65 | |
| 66 | |
| 67 def jsSyntaxBatchCheck(argumentsList, send, fx, cancelled, maxProcesses=0): | |
| 68 """ | |
| 69 Module function to check syntax for a batch of files. | |
| 70 | |
| 71 @param argumentsList list of arguments tuples as given for jsSyntaxCheck | |
| 72 @type list | |
| 73 @param send reference to send function | |
| 74 @type func | |
| 75 @param fx registered service name | |
| 76 @type str | |
| 77 @param cancelled reference to function checking for a cancellation | |
| 78 @type func | |
| 79 @param maxProcesses number of processes to be used | |
| 80 @type int | |
| 81 """ | |
| 82 if maxProcesses == 0: | |
| 83 # determine based on CPU count | |
| 84 try: | |
| 85 NumberOfProcesses = multiprocessing.cpu_count() | |
| 86 if NumberOfProcesses >= 1: | |
| 87 NumberOfProcesses -= 1 | |
| 88 except NotImplementedError: | |
| 89 NumberOfProcesses = 1 | |
| 90 else: | |
| 91 NumberOfProcesses = maxProcesses | |
| 92 | |
| 93 # Create queues | |
| 94 taskQueue = multiprocessing.Queue() | |
| 95 doneQueue = multiprocessing.Queue() | |
| 96 | |
| 97 # Submit tasks (initially two time number of processes | |
| 98 initialTasks = 2 * NumberOfProcesses | |
| 99 for task in argumentsList[:initialTasks]: | |
| 100 taskQueue.put(task) | |
| 101 | |
| 102 # Start worker processes | |
| 103 for _ in range(NumberOfProcesses): | |
| 104 multiprocessing.Process( | |
| 105 target=worker, args=(taskQueue, doneQueue) | |
| 106 ).start() | |
| 107 | |
| 108 # Get and send results | |
| 109 endIndex = len(argumentsList) - initialTasks | |
| 110 for i in range(len(argumentsList)): | |
| 111 resultSent = False | |
| 112 wasCancelled = False | |
| 113 | |
| 114 while not resultSent: | |
| 115 try: | |
| 116 # get result (waiting max. 3 seconds and send it to frontend | |
| 117 filename, result = doneQueue.get() | |
| 118 send(fx, filename, result) | |
| 119 resultSent = True | |
| 120 except queue.Empty: | |
| 121 # ignore empty queue, just carry on | |
| 122 if cancelled(): | |
| 123 wasCancelled = True | |
| 124 break | |
| 125 | |
| 126 if wasCancelled or cancelled(): | |
| 127 # just exit the loop ignoring the results of queued tasks | |
| 128 break | |
| 129 | |
| 130 if i < endIndex: | |
| 131 taskQueue.put(argumentsList[i + initialTasks]) | |
| 132 | |
| 133 # Tell child processes to stop | |
| 134 for _ in range(NumberOfProcesses): | |
| 135 taskQueue.put('STOP') | |
| 136 | |
| 137 | |
| 138 def worker(inputQueue, outputQueue): | |
| 139 """ | |
| 140 Module function acting as the parallel worker for the syntax check. | |
| 141 | |
| 142 @param inputQueue input queue (multiprocessing.Queue) | |
| 143 @param outputQueue output queue (multiprocessing.Queue) | |
| 144 """ | |
| 145 for filename, args in iter(inputQueue.get, 'STOP'): | |
| 146 source = args[0] | |
| 147 result = __jsSyntaxCheck(filename, source) | |
| 148 outputQueue.put((filename, result)) | |
| 149 | |
| 150 | |
| 151 def __jsSyntaxCheck(file, codestring): | |
| 152 """ | |
| 153 Function to check a Javascript source file for syntax errors. | |
| 154 | |
| 155 @param file source filename (string) | |
| 156 @param codestring string containing the code to check (string) | |
| 157 @return dictionary with the keys 'error' and 'warnings' which | |
| 158 hold a list containing details about the error/ warnings | |
| 159 (file name, line number, column, codestring (only at syntax | |
| 160 errors), the message, a list with arguments for the message) | |
| 161 """ | |
| 162 import jasy.script.parse.Parser as jsParser | |
| 163 import jasy.script.tokenize.Tokenizer as jsTokenizer | |
| 164 | |
| 165 codestring = normalizeCode(codestring) | |
| 166 | |
| 167 try: | |
| 168 jsParser.parse(codestring, file) | |
| 169 except (jsParser.SyntaxError, jsTokenizer.ParseError) as exc: | |
| 170 details = exc.args[0] | |
| 171 error, details = details.splitlines() | |
| 172 fn, line = details.strip().rsplit(":", 1) | |
| 173 error = error.split(":", 1)[1].strip() | |
| 174 | |
| 175 cline = min(len(codestring.splitlines()), int(line)) - 1 | |
| 176 code = codestring.splitlines()[cline] | |
| 177 return [{'error': (fn, int(line), 0, code, error)}] | |
| 178 except IndexError: | |
| 179 error = "Incomplete source file" | |
| 180 splittedCode = codestring.splitlines() | |
| 181 return [{'error': (file, len(splittedCode) + 1, len(splittedCode[-1]), | |
| 182 splittedCode[-1], error)}] | |
| 183 | |
| 184 return [{}] |
