If()

experiment.py

@@ -1,12 +1,26 @@
 from tests.test_utils import *
 
-@Commentor(fmt=[
-    (type(None), lambda o: None),
 
-])
-def function():
+def test():
+
+    @Commentor()
+    def target():
         x = 2
-    print(x == 2)
+        if x > 3:
+            x = 2 * x
+            y = 1
+        elif x > 2:
+            x = 4 * x
+            y = 2
+        elif x > 3:
+            x = 4 * x
+            y = 3
+        else:
+            x = 8 * x
+            y = 5
 
 
-print(function())
+    print(target())
+
+
+test()

tests/test_conditions.py

@@ -17,3 +17,45 @@ def test_constant():
         None : print(x == 2)
         """
 ''')
+
+
+def test():
+
+    @Commentor("<return>")
+    def target():
+        x = 2
+        if x > 3:
+            x = 2 * x
+            y = 1
+        elif x > 2:
+            x = 4 * x
+            y = 2
+        elif x > 3:
+            x = 4 * x
+            y = 3
+        else:
+            x = 8 * x
+            y = 5
+    
+    asserteq_or_print(target(), '''
+    def target():
+        x = 2
+        if x > 3:  # False
+            x = 2 * x
+            y = 1
+        elif x > 2:  # False
+            x = 4 * x
+            y = 2
+        elif x > 3:  # False
+            x = 4 * x
+            y = 3
+        else:  # True
+            x = 8 * x
+            """
+            2 : x
+            16 : 8 * x
+            ----------
+            16 : x
+            """
+            y = 5
+''')

tests/test_literals.py

@@ -23,7 +23,7 @@ def test_tuple():
     def target():
         a, b = 1, 2
         """
-        ========
+        ----------
         1 : a
         2 : b
         """

trace_commentor/commentor.py

@@ -64,12 +64,12 @@ class Commentor(object):
 
         return proxy_func
 
-    def process(self, node: ast.AST):
+    def process(self, node: ast.AST, *args, **kwargs):
         node_type = node.__class__.__name__
         handler = getattr(handlers, node_type, None)
         if handler is None:
             raise NotImplementedError(f"Unknown how to handle {node_type} node.")
-        return handler(node, self)
+        return handler(node, self, *args, **kwargs)
 
     def eval(self, node: ast.Expr, format=True):
         src = to_source(node)

trace_commentor/handlers/__init__.py

@@ -3,3 +3,4 @@ from .statements import Pass, Assign
 from .expressions import Expr, BinOp, Call, Compare
 from .literals import Constant, Tuple
 from .variables import Name
+from .control_flow import If

trace_commentor/handlers/control_flow.py

@@ -0,0 +1,50 @@
+import ast
+from .. import flags
+from ..utils import to_source, APPEND_SOURCE_BY_THEMSELVES
+
+
+ELIF = 2
+PASS = 4
+
+
+def If(self, cmtor, state=0):
+
+    if state & PASS:
+        test = False
+        test_comment = "skipped"
+    else:
+        test = cmtor.eval(self.test, format=False)
+        test_comment = test
+        if test:
+            state = state | PASS
+        
+    if state & ELIF:
+        cmtor.append_source(f"elif {to_source(self.test)}:  # {test_comment}")
+    else:
+        cmtor.append_source(f"if {to_source(self.test)}:  # {test_comment}")
+        
+    cmtor.indent += flags.INDENT
+    for stmt in self.body:
+        if type(stmt) not in APPEND_SOURCE_BY_THEMSELVES:
+            cmtor.append_source(to_source(stmt))
+        if test:
+            cmtor.process(stmt)
+    cmtor.append_source()
+    cmtor.indent -= flags.INDENT
+    
+    if self.orelse:
+        if type(self.orelse[0]) == ast.If:
+            cmtor.process(self.orelse[0], state=state | ELIF)
+        else:
+            test = not (state & PASS)
+            test_comment = True if test else "skipped"
+            cmtor.append_source(f"else:  # {test_comment}")
+            
+            cmtor.indent += flags.INDENT
+            for stmt in self.orelse:
+                if type(stmt) not in APPEND_SOURCE_BY_THEMSELVES:
+                    cmtor.append_source(to_source(stmt))
+                if test:
+                    cmtor.process(stmt)
+            cmtor.append_source()
+            cmtor.indent -= flags.INDENT

trace_commentor/handlers/definitions.py

@@ -1,5 +1,6 @@
+import ast
 from .. import flags
-from ..utils import to_source
+from ..utils import to_source, APPEND_SOURCE_BY_THEMSELVES
 
 def FunctionDef(self, cmtor):
     cmtor.append_source(f"def {self.name}():")
@@ -7,6 +8,7 @@ def FunctionDef(self, cmtor):
     
     for stmt in self.body:
         
+        if type(stmt) not in APPEND_SOURCE_BY_THEMSELVES:
             cmtor.append_source(to_source(stmt))
         
         if self is cmtor.root:

trace_commentor/handlers/statements.py

@@ -8,6 +8,6 @@ def Assign(self, cmtor):
     cmtor.process(self.value)
     cmtor.exec(self)
     if type(self.value) not in [ast.Constant]:
-        cmtor.append_comment("========")
+        cmtor.append_comment("----------")
         for target in self.targets:
             cmtor.process(target)

trace_commentor/utils.py

@@ -1,8 +1,15 @@
-import os
+import ast
 import astor
 import inspect
+import os
 from . import flags
 
+
+APPEND_SOURCE_BY_THEMSELVES = [
+    ast.If,
+]
+
+
 def sign(line: str, depth=1):
     if flags.DEBUG:
         currentframe = inspect.currentframe()
@@ -12,5 +19,9 @@ def sign(line: str, depth=1):
     else:
         return line
 
+
 def to_source(node):
-    return astor.to_source(node).rstrip("\n")
+    src = astor.to_source(node).rstrip("\n")
+    if type(node) != ast.Tuple and len(src) > 2 and src[0] == "(" and src[-1] == ")":
+        src = src[1:-1]
+    return src