Changeset 2315 for cobra/trunk/Source/Phases/Phase.cobra

Timestamp:

03/12/10 09:25:11 (2 years ago)

Author:

Chuck.Esterbrook

Message:

An above error about numeric types indicates that you may want to set the default numeric type with "@number [expectedType]" in a source file or "cobra -number:[expectedType]" at the command line.

Files:

• cobra/trunk/Source/Phases/Phase.cobra (modified) (2 diffs)

cobra/trunk/Source/Phases/Phase.cobra

@@ -1 @@
-class Phase is abstract
+class Phase implements IComparable<of Phase> is abstract
     """
     A phase of the compiler.
@@ -22 +22 @@
         return .compiler.options
 
+    get order as int
+        """
+        Subclasses can override to change their order with respect to other phases.
+        Consecutive phases in the initial list of phases are kept in sequence with a "stable sort".
+        Default is 100.
+        """
+        return 100
+
+    pro stableOrder from var as int
+        """
+        Used to implement a "stable sort".
+        """
+
+    get willRunWithErrors as bool
+        """
+        Returns true if the phase will run correctly even if previously run phases produced errors.
+        Typically, phases will not want to run with errors because the AST nodes will in an
+        incomplete state that the phase cannot rely on. Hence, the default is false.
+        However, subclasses may override to return true if appropriate.
+        """
+        return false
+
     get verbosity as int
         return .compiler.verbosity
 
+    def compareTo(other as Phase) as int
+        diff = .order - other.order
+        if diff == 0, diff = .stableOrder - other.stableOrder
+        return diff
+        
     var _didSucceed as bool