Added very basic conditions and fixed blank

Signed-off-by: Cervenka Dusan <[email protected]>

src/cfile/core.py

@@ -540,3 +540,22 @@ class Block(Sequence):
     """
     A sequence wrapped in braces
     """
+
+
+class ConditionType(Enum):
+    IF = 0
+    ELSE_IF = 1
+    ELSE = 2
+
+
+class Condition(Block):
+    """
+    A condition wrapped in braces
+    """
+    def __init__(self, condition: str = "", type: ConditionType = ConditionType.ELSE):
+        super().__init__()
+        self.condition = condition
+        self.type = type
+
+        if (condition and type == ConditionType.ELSE) or (not condition and type != ConditionType.ELSE):
+            raise Exception("Condition and type didn't match")

src/cfile/factory.py

@@ -246,3 +246,9 @@ def declaration(self,
         New declaration
         """
         return core.Declaration(element, init_value)
+
+    def condition(self, condition:str, type:core.ConditionType):
+        """
+        New condition
+        """
+        return core.Condition(condition, type)

src/cfile/writer.py

@@ -76,8 +76,11 @@ def _dedent(self):
             self.indentation_str = self.indentation_char * \
                 (self.indentation_level * self.indent_width)
 
-    def _start_line(self):
-        self.fh.write(self.indentation_str)
+    def _start_line(self, indent:bool = True):
+        if indent:
+            self.fh.write(self.indentation_str)
+        else:
+            self.fh.write("")
 
     def _write(self, text):
         self.fh.write(text)
@@ -125,6 +128,7 @@ def __init__(self, style: c_style.StyleOptions) -> None:
             "IfndefDirective": self._write_ifndef_directive,
             "EndifDirective": self._write_endif_directive,
             "Extern": self._write_extern,
+            "Condition": self._write_condition,
         }
         self.last_element = ElementType.NONE
 
@@ -184,14 +188,20 @@ def _write_sequence(self, sequence: core.Sequence) -> None:
                 self._start_line()
                 self._write_line_comment(elem)
                 self._eol()
+            elif isinstance(elem, core.Condition):
+                self._start_line()
+                self._write_condition(elem)
             elif isinstance(elem, core.Block):
                 self._start_line()
                 self._write_block(elem)
             elif isinstance(elem, core.Line):
                 self._start_line()
                 self._write_line_element(elem)
             else:
-                self._start_line()
+                if isinstance(elem, core.Blank):
+                    self._start_line(False)
+                else:
+                    self._start_line()
                 class_name = elem.__class__.__name__
                 write_method = self.switcher_all.get(class_name, None)
                 if write_method is not None:
@@ -762,3 +772,12 @@ def _write_endif_directive(self, elem: core.EndifDirective) -> None:
     def _write_extern(self, elem: core.Extern) -> None:
         self._write(f'extern "{elem.language}"')
         self.last_element = ElementType.DIRECTIVE
+
+    def _write_condition(self, elem:core.Condition) -> None:
+        if elem.type == core.ConditionType.IF:
+            self._write(f"if ({elem.condition})")
+        elif elem.type == core.ConditionType.ELSE_IF:
+            self._write(f"else if ({elem.condition})")
+        elif elem.type == core.ConditionType.ELSE:
+            self._write(f"else")
+        self._write_block(elem)