Commit: 6992b47c96dc5027614e470b2482fbcd0894013f - CCastle2 (hg)

Castle: The best Real-Time/Embedded/HighTech language EVER. Attempt 2

Commit MetaInfo

• Revisión: 6992b47c96dc5027614e470b2482fbcd0894013f (tree)
• Tiempo: 2022-02-08 02:48:05
• Autor: Albert Mietus < albert AT mietus DOT nl >
• Commiter: Albert Mietus < albert AT mietus DOT nl >

Log Message

code specific for ast2xml not longer in generic serialization-file (now with new file)

Cambiar Resumen

• add: castle/ast/ast2xml.py

Diferencia incremental

diff -r 55046f7ff361 -r 6992b47c96dc castle/ast/ast2xml.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/castle/ast/ast2xml.py	Mon Feb 07 18:48:05 2022 +0100
@@ -0,0 +1,89 @@
+""" Support to translate an AST into XML.
+This file should be used directly, instead use  :class:`castle.ast.serialization.Serialize` as in ``Serialize('XML')``
+"""
+
+import logging; logger = logging.getLogger(__name__)
+from castle.ast import  serialization
+from xml.etree import ElementTree as ET
+
+
+class XML_Serialize(serialization.Serialize):
+    def serialize(self, ast) -> str:
+        logger.debug(f"ast={ast._valType(ast)}")
+
+        tree = self._ast2xml(ast)
+        return ET.tostring(tree, encoding="unicode")
+
+
+    def _ast2xml(self, ast, parent=None) -> ET.Element:
+        if parent is None:
+            parent = ET.Element('AST2XML', version="0.0")
+
+        method_name = f'{type(ast).__name__}2xml'
+        visitor = getattr(self, method_name, None)
+        logger.debug(f'visitor={visitor}')
+
+        if visitor:
+            visitor(ast=ast, parent=parent) # Grow the tree
+        else:
+            logger.info(f'No visitor >>{method_name}<<, skipping ... (fingers crossed)')
+        return parent
+
+
+    def ID2xml(self, ast, parent) ->None:
+        logger.debug(f"ast={ast._valType(ast)} parent={parent} ast.name={ast.name}")
+        ET.SubElement(parent, 'ID', name=ast.name)
+
+
+#NO_VISITOR_NEEDED: PEG2xml 				## Pure Abstract
+#NO_VISITOR_NEEDED: MixIn_value_attribute2xml		## MixIn
+#NO_VISITOR_NEEDED: MixIn_expr_attribute2xml		## MixIn
+#NO_VISITOR_NEEDED: MixIn_children_tuple2xml		## MixIn
+#NO_VISITOR_NEEDED: Terminal2xml			## Pure Abstract
+#NO_VISITOR_NEEDED: NonTerminal2xml			## Pure Abstract
+#NO_VISITOR_NEEDED: Expression2xml			## Pure Abstract
+#NO_VISITOR_NEEDED: Predicate2xml			## Pure Abstract
+#NO_VISITOR_NEEDED: Group2xml				## Pure Abstract
+#NO_VISITOR_NEEDED: Markers2xml				## Pure Abstract
+
+
+    def _MixIn_value_attribute2xml(self, ast, parent, cls_name):
+        logger.debug(f"{cls_name}2xml:: ast={ast._valType(ast.value)}")
+        ET.SubElement(parent, cls_name, value=ast.value)
+
+    def StrTerm2xml(self, ast, parent):     self._MixIn_value_attribute2xml(ast, parent, 'StrTerm')
+    def RegExpTerm2xml(self, ast, parent):  self._MixIn_value_attribute2xml(ast, parent, 'RegExpTerm')
+
+    def Sequence2xml(self, ast, parent) ->None:
+        logger.debug(f"Sequence2xml::ast={ast._valType(ast.value)}")
+        seq = ET.SubElement(parent, 'Sequence')
+        for elm in ast.value:
+            self._ast2xml(elm, parent=seq)
+
+    def Rule2xml(self, ast, parent) ->None:
+        logger.debug(f"Rule2xml:: ast:Rule.name={ast.name.name}")
+        rule = ET.SubElement(parent, 'Rule', name=ast.name.name)
+        self._ast2xml(ast.expr, parent=rule)
+
+    def Rules2xml(self, ast, parent) ->None:
+        logger.debug(f"Rules2xml:: ast[{len(ast)}]")
+        for child in ast:
+            logger.debug(f'Rules2xml type(child)={type(child)}')
+            self._ast2xml(child, parent=parent)
+
+#############
+
+#    def Setting2xml(self, ast, parent) ->None: ...
+#    def Settings2xml(self, ast, parent) ->None: ...
+#    def Grammar2xml(self, ast, parent) ->None: ...
+#    def UnorderedGroup2xml(self, ast, parent) ->None: ...
+#    def Quantity2xml(self, ast, parent) ->None: ...
+
+#    def OrderedChoice2xml(self, ast, parent) ->None: ...
+#    def Optional2xml(self, ast, parent) ->None: ...
+#    def ZeroOrMore2xml(self, ast, parent) ->None: ...
+#    def OneOrMore2xml(self, ast, parent) ->None: ...
+#    def AndPredicate2xml(self, ast, parent) ->None: ...
+#    def NotPredicate2xml(self, ast, parent) ->None: ...
+
+#    def EOF2xml(self, ast, parent) ->None: pass # Needed