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""" |
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SDoc |
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Copyright 2016 Set Based IT Consultancy |
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Licence MIT |
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""" |
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# ---------------------------------------------------------------------------------------------------------------------- |
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import re |
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from sdoc import sdoc2 |
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from sdoc.antlr.sdoc2ParserVisitor import sdoc2ParserVisitor |
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from sdoc.sdoc.SDocVisitor import SDocVisitor |
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from sdoc.sdoc2.Position import Position |
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class SDoc2Visitor(sdoc2ParserVisitor, SDocVisitor): |
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""" |
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Visitor for SDoc level 2. |
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""" |
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# ------------------------------------------------------------------------------------------------------------------ |
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def __init__(self): |
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""" |
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Object constructor. |
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""" |
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SDocVisitor.__init__(self) |
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self._output = None |
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""" |
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Object for streaming the generated output. This object MUST implement the write method. |
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""" |
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self._sdoc1_file_name = '' |
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""" |
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The original file name at SDoc1 level. |
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:type: str |
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""" |
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self._sdoc1_line = 0 |
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""" |
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The offset of for computing the current line at SDoc1 level. |
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:type: int |
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""" |
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self._sdoc1_column = 0 |
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""" |
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The offset of for computing the current column at SDoc1 level. |
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:type: int |
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""" |
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self._sdoc2_line = 0 |
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""" |
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The line position of the last position command. |
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:type: int |
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""" |
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self._sdoc2_column = 0 |
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""" |
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The last column position of the last position command. |
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:type: int |
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""" |
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# ------------------------------------------------------------------------------------------------------------------ |
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@staticmethod |
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def _get_options(ctx): |
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""" |
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Returns the option of an command. |
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:param ParserRuleContext ctx: The parse tree with the options. |
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:rtype: dict[str,str] |
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""" |
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options = {} |
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i = 0 |
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while True: |
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name_token = ctx.OPT_ARG_NAME(i) |
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value_token = ctx.OPT_ARG_VALUE(i) |
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if not name_token: |
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break |
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option_name = name_token.getText() |
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option_value = value_token.getText() |
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# Trim leading and trailing (double)quotes from string. (Is there a way to do this in ANTLR?) |
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if (option_value[0] == '"' and option_value[-1] == '"') or \ |
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(option_value[0] == "'" and option_value[-1] == "'"): |
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option_value = option_value[1:-1] |
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options[option_name] = option_value |
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i += 1 |
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return options |
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# ------------------------------------------------------------------------------------------------------------------ |
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def get_position(self, token): |
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""" |
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Returns the position of the token in the original SDoc1 source file. |
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:param token: |
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:rtype: sdoc.sdoc2.Position.Position |
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""" |
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line_number = token.line |
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column = token.column |
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if self._sdoc2_line == line_number: |
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column = self._sdoc1_column + (column - self._sdoc2_column) |
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line_number = self._sdoc1_line + (line_number - self._sdoc2_line) |
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return Position(self._sdoc1_file_name, line_number, column, -1, -1) |
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# ------------------------------------------------------------------------------------------------------------------ |
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def set_output(self, output): |
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""" |
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Sets the object for streaming the generated output. |
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:param output: This object MUST implement the write method. |
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""" |
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self._output = output |
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# ------------------------------------------------------------------------------------------------------------------ |
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def stream(self, snippet): |
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""" |
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Puts an output snippet on the output stream. |
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:param str snippet: The snippet to be appended to the output stream of this parser. |
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""" |
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if snippet is not None: |
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self._output.write(snippet) |
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# ------------------------------------------------------------------------------------------------------------------ |
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def visitCmd_begin(self, ctx): |
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""" |
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Visit a parse tree produced by a begin command. |
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:param sdoc.antlr.sdoc2Parser.sdoc2Parser.Cmd_beginContext ctx: The parse tree. |
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""" |
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command = ctx.BLOCK_ARG_ARG().getText() |
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sdoc2.node_store.append_block_node(command, self._get_options(ctx), self.get_position(ctx.start)) |
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# ------------------------------------------------------------------------------------------------------------------ |
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def visitCmd_end(self, ctx): |
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""" |
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Visit a parse tree produced by an end command. |
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:param sdoc.antlr.sdoc2Parser.sdoc2Parser.Cmd_endContext ctx: The parse tree. |
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""" |
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command = ctx.BLOCK_ARG_ARG().getText().rstrip() |
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sdoc2.node_store.end_block_node(command) |
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# ------------------------------------------------------------------------------------------------------------------ |
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def visitCmd_position(self, ctx): |
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""" |
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Visit a parse tree produced by a position command. |
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:param sdoc.antlr.sdoc2Parser.sdoc2Parser.Cmd_positionContext ctx: The parse tree. |
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""" |
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argument = ctx.INLINE_ARG_ARG() |
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parts = re.match(r'(.+):([0-9]+)\.([0-9]+)', str(argument)) |
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if not parts: |
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self._error('{0!s} is not a valid position'.format(argument)) |
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return |
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self._sdoc1_file_name = parts.group(1) |
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self._sdoc1_line = int(parts.group(2)) |
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self._sdoc1_column = int(parts.group(3)) |
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token = ctx.stop |
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self._sdoc2_line = token.line |
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self._sdoc2_column = token.column + len(token.text) |
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# ------------------------------------------------------------------------------------------------------------------ |
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def visitCmd_sdoc2(self, ctx): |
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""" |
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Visit a parse tree produced by a inline command. |
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:param sdoc.antlr.sdoc2Parser.sdoc2Parser.Cmd_sdoc2Context ctx: The parse tree. |
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""" |
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command = ctx.SDOC2_COMMAND().getText() |
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argument = ctx.INLINE_ARG_ARG() |
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sdoc2.node_store.append_inline_node(command[1:], |
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self._get_options(ctx), |
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argument.getText() if argument else '', |
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self.get_position(ctx.start)) |
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# ------------------------------------------------------------------------------------------------------------------ |
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def visitText(self, ctx): |
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""" |
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Visit a parse tree produced by TEXT. |
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:param sdoc.antlr.sdoc2Parser.sdoc2Parser.TextContext ctx: The parse tree. |
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""" |
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sdoc2.node_store.append_inline_node('TEXT', {}, ctx.TEXT().getText(), self.get_position(ctx.start)) |
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# ---------------------------------------------------------------------------------------------------------------------- |
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