553 lines
18 KiB
Python
553 lines
18 KiB
Python
"""
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pygments.lexers.robotframework
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Lexer for Robot Framework.
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:copyright: Copyright 2006-2022 by the Pygments team, see AUTHORS.
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:license: BSD, see LICENSE for details.
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"""
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# Copyright 2012 Nokia Siemens Networks Oyj
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import re
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from pygments.lexer import Lexer
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from pygments.token import Token
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__all__ = ['RobotFrameworkLexer']
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HEADING = Token.Generic.Heading
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SETTING = Token.Keyword.Namespace
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IMPORT = Token.Name.Namespace
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TC_KW_NAME = Token.Generic.Subheading
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KEYWORD = Token.Name.Function
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ARGUMENT = Token.String
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VARIABLE = Token.Name.Variable
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COMMENT = Token.Comment
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SEPARATOR = Token.Punctuation
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SYNTAX = Token.Punctuation
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GHERKIN = Token.Generic.Emph
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ERROR = Token.Error
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def normalize(string, remove=''):
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string = string.lower()
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for char in remove + ' ':
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if char in string:
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string = string.replace(char, '')
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return string
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class RobotFrameworkLexer(Lexer):
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"""
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For Robot Framework test data.
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Supports both space and pipe separated plain text formats.
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.. versionadded:: 1.6
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"""
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name = 'RobotFramework'
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url = 'http://robotframework.org'
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aliases = ['robotframework']
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filenames = ['*.robot', '*.resource']
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mimetypes = ['text/x-robotframework']
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def __init__(self, **options):
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options['tabsize'] = 2
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options['encoding'] = 'UTF-8'
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Lexer.__init__(self, **options)
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def get_tokens_unprocessed(self, text):
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row_tokenizer = RowTokenizer()
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var_tokenizer = VariableTokenizer()
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index = 0
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for row in text.splitlines():
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for value, token in row_tokenizer.tokenize(row):
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for value, token in var_tokenizer.tokenize(value, token):
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if value:
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yield index, token, str(value)
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index += len(value)
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class VariableTokenizer:
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def tokenize(self, string, token):
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var = VariableSplitter(string, identifiers='$@%&')
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if var.start < 0 or token in (COMMENT, ERROR):
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yield string, token
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return
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for value, token in self._tokenize(var, string, token):
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if value:
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yield value, token
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def _tokenize(self, var, string, orig_token):
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before = string[:var.start]
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yield before, orig_token
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yield var.identifier + '{', SYNTAX
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yield from self.tokenize(var.base, VARIABLE)
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yield '}', SYNTAX
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if var.index is not None:
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yield '[', SYNTAX
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yield from self.tokenize(var.index, VARIABLE)
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yield ']', SYNTAX
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yield from self.tokenize(string[var.end:], orig_token)
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class RowTokenizer:
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def __init__(self):
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self._table = UnknownTable()
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self._splitter = RowSplitter()
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testcases = TestCaseTable()
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settings = SettingTable(testcases.set_default_template)
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variables = VariableTable()
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keywords = KeywordTable()
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self._tables = {'settings': settings, 'setting': settings,
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'metadata': settings,
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'variables': variables, 'variable': variables,
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'testcases': testcases, 'testcase': testcases,
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'tasks': testcases, 'task': testcases,
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'keywords': keywords, 'keyword': keywords,
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'userkeywords': keywords, 'userkeyword': keywords}
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def tokenize(self, row):
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commented = False
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heading = False
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for index, value in enumerate(self._splitter.split(row)):
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# First value, and every second after that, is a separator.
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index, separator = divmod(index-1, 2)
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if value.startswith('#'):
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commented = True
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elif index == 0 and value.startswith('*'):
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self._table = self._start_table(value)
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heading = True
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yield from self._tokenize(value, index, commented,
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separator, heading)
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self._table.end_row()
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def _start_table(self, header):
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name = normalize(header, remove='*')
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return self._tables.get(name, UnknownTable())
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def _tokenize(self, value, index, commented, separator, heading):
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if commented:
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yield value, COMMENT
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elif separator:
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yield value, SEPARATOR
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elif heading:
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yield value, HEADING
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else:
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yield from self._table.tokenize(value, index)
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class RowSplitter:
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_space_splitter = re.compile('( {2,})')
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_pipe_splitter = re.compile(r'((?:^| +)\|(?: +|$))')
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def split(self, row):
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splitter = (row.startswith('| ') and self._split_from_pipes
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or self._split_from_spaces)
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yield from splitter(row)
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yield '\n'
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def _split_from_spaces(self, row):
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yield '' # Start with (pseudo)separator similarly as with pipes
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yield from self._space_splitter.split(row)
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def _split_from_pipes(self, row):
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_, separator, rest = self._pipe_splitter.split(row, 1)
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yield separator
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while self._pipe_splitter.search(rest):
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cell, separator, rest = self._pipe_splitter.split(rest, 1)
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yield cell
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yield separator
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yield rest
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class Tokenizer:
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_tokens = None
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def __init__(self):
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self._index = 0
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def tokenize(self, value):
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values_and_tokens = self._tokenize(value, self._index)
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self._index += 1
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if isinstance(values_and_tokens, type(Token)):
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values_and_tokens = [(value, values_and_tokens)]
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return values_and_tokens
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def _tokenize(self, value, index):
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index = min(index, len(self._tokens) - 1)
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return self._tokens[index]
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def _is_assign(self, value):
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if value.endswith('='):
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value = value[:-1].strip()
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var = VariableSplitter(value, identifiers='$@&')
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return var.start == 0 and var.end == len(value)
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class Comment(Tokenizer):
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_tokens = (COMMENT,)
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class Setting(Tokenizer):
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_tokens = (SETTING, ARGUMENT)
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_keyword_settings = ('suitesetup', 'suiteprecondition', 'suiteteardown',
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'suitepostcondition', 'testsetup', 'tasksetup', 'testprecondition',
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'testteardown','taskteardown', 'testpostcondition', 'testtemplate', 'tasktemplate')
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_import_settings = ('library', 'resource', 'variables')
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_other_settings = ('documentation', 'metadata', 'forcetags', 'defaulttags',
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'testtimeout','tasktimeout')
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_custom_tokenizer = None
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def __init__(self, template_setter=None):
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Tokenizer.__init__(self)
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self._template_setter = template_setter
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def _tokenize(self, value, index):
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if index == 1 and self._template_setter:
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self._template_setter(value)
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if index == 0:
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normalized = normalize(value)
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if normalized in self._keyword_settings:
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self._custom_tokenizer = KeywordCall(support_assign=False)
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elif normalized in self._import_settings:
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self._custom_tokenizer = ImportSetting()
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elif normalized not in self._other_settings:
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return ERROR
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elif self._custom_tokenizer:
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return self._custom_tokenizer.tokenize(value)
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return Tokenizer._tokenize(self, value, index)
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class ImportSetting(Tokenizer):
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_tokens = (IMPORT, ARGUMENT)
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class TestCaseSetting(Setting):
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_keyword_settings = ('setup', 'precondition', 'teardown', 'postcondition',
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'template')
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_import_settings = ()
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_other_settings = ('documentation', 'tags', 'timeout')
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def _tokenize(self, value, index):
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if index == 0:
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type = Setting._tokenize(self, value[1:-1], index)
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return [('[', SYNTAX), (value[1:-1], type), (']', SYNTAX)]
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return Setting._tokenize(self, value, index)
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class KeywordSetting(TestCaseSetting):
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_keyword_settings = ('teardown',)
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_other_settings = ('documentation', 'arguments', 'return', 'timeout', 'tags')
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class Variable(Tokenizer):
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_tokens = (SYNTAX, ARGUMENT)
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def _tokenize(self, value, index):
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if index == 0 and not self._is_assign(value):
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return ERROR
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return Tokenizer._tokenize(self, value, index)
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class KeywordCall(Tokenizer):
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_tokens = (KEYWORD, ARGUMENT)
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def __init__(self, support_assign=True):
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Tokenizer.__init__(self)
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self._keyword_found = not support_assign
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self._assigns = 0
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def _tokenize(self, value, index):
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if not self._keyword_found and self._is_assign(value):
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self._assigns += 1
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return SYNTAX # VariableTokenizer tokenizes this later.
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if self._keyword_found:
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return Tokenizer._tokenize(self, value, index - self._assigns)
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self._keyword_found = True
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return GherkinTokenizer().tokenize(value, KEYWORD)
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class GherkinTokenizer:
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_gherkin_prefix = re.compile('^(Given|When|Then|And|But) ', re.IGNORECASE)
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def tokenize(self, value, token):
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match = self._gherkin_prefix.match(value)
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if not match:
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return [(value, token)]
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end = match.end()
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return [(value[:end], GHERKIN), (value[end:], token)]
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class TemplatedKeywordCall(Tokenizer):
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_tokens = (ARGUMENT,)
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class ForLoop(Tokenizer):
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def __init__(self):
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Tokenizer.__init__(self)
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self._in_arguments = False
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def _tokenize(self, value, index):
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token = self._in_arguments and ARGUMENT or SYNTAX
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if value.upper() in ('IN', 'IN RANGE'):
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self._in_arguments = True
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return token
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class _Table:
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_tokenizer_class = None
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def __init__(self, prev_tokenizer=None):
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self._tokenizer = self._tokenizer_class()
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self._prev_tokenizer = prev_tokenizer
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self._prev_values_on_row = []
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def tokenize(self, value, index):
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if self._continues(value, index):
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self._tokenizer = self._prev_tokenizer
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yield value, SYNTAX
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else:
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yield from self._tokenize(value, index)
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self._prev_values_on_row.append(value)
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def _continues(self, value, index):
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return value == '...' and all(self._is_empty(t)
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for t in self._prev_values_on_row)
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def _is_empty(self, value):
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return value in ('', '\\')
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def _tokenize(self, value, index):
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return self._tokenizer.tokenize(value)
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def end_row(self):
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self.__init__(prev_tokenizer=self._tokenizer)
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class UnknownTable(_Table):
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_tokenizer_class = Comment
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def _continues(self, value, index):
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return False
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class VariableTable(_Table):
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_tokenizer_class = Variable
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class SettingTable(_Table):
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_tokenizer_class = Setting
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def __init__(self, template_setter, prev_tokenizer=None):
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_Table.__init__(self, prev_tokenizer)
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self._template_setter = template_setter
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def _tokenize(self, value, index):
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if index == 0 and normalize(value) == 'testtemplate':
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self._tokenizer = Setting(self._template_setter)
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return _Table._tokenize(self, value, index)
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def end_row(self):
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self.__init__(self._template_setter, prev_tokenizer=self._tokenizer)
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class TestCaseTable(_Table):
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_setting_class = TestCaseSetting
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_test_template = None
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_default_template = None
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@property
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def _tokenizer_class(self):
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if self._test_template or (self._default_template and
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self._test_template is not False):
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return TemplatedKeywordCall
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return KeywordCall
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def _continues(self, value, index):
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return index > 0 and _Table._continues(self, value, index)
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def _tokenize(self, value, index):
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if index == 0:
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if value:
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self._test_template = None
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return GherkinTokenizer().tokenize(value, TC_KW_NAME)
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if index == 1 and self._is_setting(value):
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if self._is_template(value):
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self._test_template = False
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self._tokenizer = self._setting_class(self.set_test_template)
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else:
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self._tokenizer = self._setting_class()
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if index == 1 and self._is_for_loop(value):
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self._tokenizer = ForLoop()
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if index == 1 and self._is_empty(value):
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return [(value, SYNTAX)]
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return _Table._tokenize(self, value, index)
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def _is_setting(self, value):
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return value.startswith('[') and value.endswith(']')
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def _is_template(self, value):
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return normalize(value) == '[template]'
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def _is_for_loop(self, value):
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return value.startswith(':') and normalize(value, remove=':') == 'for'
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def set_test_template(self, template):
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self._test_template = self._is_template_set(template)
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def set_default_template(self, template):
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self._default_template = self._is_template_set(template)
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def _is_template_set(self, template):
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return normalize(template) not in ('', '\\', 'none', '${empty}')
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class KeywordTable(TestCaseTable):
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_tokenizer_class = KeywordCall
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_setting_class = KeywordSetting
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def _is_template(self, value):
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return False
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# Following code copied directly from Robot Framework 2.7.5.
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class VariableSplitter:
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def __init__(self, string, identifiers):
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self.identifier = None
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self.base = None
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self.index = None
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self.start = -1
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self.end = -1
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self._identifiers = identifiers
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self._may_have_internal_variables = False
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try:
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self._split(string)
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except ValueError:
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pass
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else:
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self._finalize()
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def get_replaced_base(self, variables):
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if self._may_have_internal_variables:
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return variables.replace_string(self.base)
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return self.base
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def _finalize(self):
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self.identifier = self._variable_chars[0]
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self.base = ''.join(self._variable_chars[2:-1])
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self.end = self.start + len(self._variable_chars)
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if self._has_list_or_dict_variable_index():
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self.index = ''.join(self._list_and_dict_variable_index_chars[1:-1])
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self.end += len(self._list_and_dict_variable_index_chars)
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def _has_list_or_dict_variable_index(self):
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return self._list_and_dict_variable_index_chars\
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and self._list_and_dict_variable_index_chars[-1] == ']'
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def _split(self, string):
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start_index, max_index = self._find_variable(string)
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self.start = start_index
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self._open_curly = 1
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self._state = self._variable_state
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self._variable_chars = [string[start_index], '{']
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self._list_and_dict_variable_index_chars = []
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self._string = string
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start_index += 2
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for index, char in enumerate(string[start_index:]):
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index += start_index # Giving start to enumerate only in Py 2.6+
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try:
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self._state(char, index)
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except StopIteration:
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return
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if index == max_index and not self._scanning_list_variable_index():
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return
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def _scanning_list_variable_index(self):
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return self._state in [self._waiting_list_variable_index_state,
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self._list_variable_index_state]
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def _find_variable(self, string):
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max_end_index = string.rfind('}')
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if max_end_index == -1:
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raise ValueError('No variable end found')
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if self._is_escaped(string, max_end_index):
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return self._find_variable(string[:max_end_index])
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start_index = self._find_start_index(string, 1, max_end_index)
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if start_index == -1:
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raise ValueError('No variable start found')
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return start_index, max_end_index
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def _find_start_index(self, string, start, end):
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index = string.find('{', start, end) - 1
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if index < 0:
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return -1
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if self._start_index_is_ok(string, index):
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return index
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return self._find_start_index(string, index+2, end)
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def _start_index_is_ok(self, string, index):
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return string[index] in self._identifiers\
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and not self._is_escaped(string, index)
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def _is_escaped(self, string, index):
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escaped = False
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while index > 0 and string[index-1] == '\\':
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index -= 1
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escaped = not escaped
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return escaped
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def _variable_state(self, char, index):
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self._variable_chars.append(char)
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if char == '}' and not self._is_escaped(self._string, index):
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self._open_curly -= 1
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if self._open_curly == 0:
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if not self._is_list_or_dict_variable():
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raise StopIteration
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self._state = self._waiting_list_variable_index_state
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elif char in self._identifiers:
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self._state = self._internal_variable_start_state
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def _is_list_or_dict_variable(self):
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return self._variable_chars[0] in ('@','&')
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|
|
def _internal_variable_start_state(self, char, index):
|
|
self._state = self._variable_state
|
|
if char == '{':
|
|
self._variable_chars.append(char)
|
|
self._open_curly += 1
|
|
self._may_have_internal_variables = True
|
|
else:
|
|
self._variable_state(char, index)
|
|
|
|
def _waiting_list_variable_index_state(self, char, index):
|
|
if char != '[':
|
|
raise StopIteration
|
|
self._list_and_dict_variable_index_chars.append(char)
|
|
self._state = self._list_variable_index_state
|
|
|
|
def _list_variable_index_state(self, char, index):
|
|
self._list_and_dict_variable_index_chars.append(char)
|
|
if char == ']':
|
|
raise StopIteration
|