detect dependencies from golang files

wakatime/dependencies/go.py

@@ -0,0 +1,77 @@
+# -*- coding: utf-8 -*-
+"""
+    wakatime.languages.go
+    ~~~~~~~~~~~~~~~~~~~~~
+
+    Parse dependencies from Go code.
+
+    :copyright: (c) 2016 Alan Hamlett.
+    :license: BSD, see LICENSE for more details.
+"""
+
+from . import TokenParser
+
+
+class GoParser(TokenParser):
+    state = None
+    parens = 0
+    aliases = 0
+    exclude = [
+        r'^"fmt"$',
+    ]
+
+    def parse(self):
+        for index, token, content in self.tokens:
+            self._process_token(token, content)
+        return self.dependencies
+
+    def _process_token(self, token, content):
+        if self.partial(token) == 'Namespace':
+            self._process_namespace(token, content)
+        elif self.partial(token) == 'Punctuation':
+            self._process_punctuation(token, content)
+        elif self.partial(token) == 'String':
+            self._process_string(token, content)
+        elif self.partial(token) == 'Text':
+            self._process_text(token, content)
+        elif self.partial(token) == 'Other':
+            self._process_other(token, content)
+        else:
+            self._process_misc(token, content)
+
+    def _process_namespace(self, token, content):
+        self.state = content
+        self.parens = 0
+        self.aliases = 0
+
+    def _process_string(self, token, content):
+        if self.state == 'import':
+            self.append(content, truncate=False)
+
+    def _process_punctuation(self, token, content):
+        if content == '(':
+            self.parens += 1
+        elif content == ')':
+            self.parens -= 1
+        elif content == '.':
+            self.aliases += 1
+        else:
+            self.state = None
+
+    def _process_text(self, token, content):
+        if self.state == 'import':
+            if content == "\n" and self.parens <= 0:
+                self.state = None
+                self.parens = 0
+                self.aliases = 0
+        else:
+            self.state = None
+
+    def _process_other(self, token, content):
+        if self.state == 'import':
+            self.aliases += 1
+        else:
+            self.state = None
+
+    def _process_misc(self, token, content):
+        self.state = None