[Patch] BaseTools: Report Error if use SET in Dsc

[BobCF <bob.c.feng@intel.com>]

Build tool do not support SET syntax in DSC.

If the SET statement is used in DSC, build tool just ignore it.

That behavior confused some users that
they think SET statement works in DSC like in FDF.

To avoid such confusion, build tool report ERROR

if there is "SET" statement in Dsc file.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
---
 BaseTools/Source/Python/Workspace/MetaFileParser.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/BaseTools/Source/Python/Workspace/MetaFileParser.py b/BaseTools/Source/Python/Workspace/MetaFileParser.py
index 032220813b..19d8452a35 100644
--- a/BaseTools/Source/Python/Workspace/MetaFileParser.py
+++ b/BaseTools/Source/Python/Workspace/MetaFileParser.py
@@ -975,10 +975,15 @@ class DscParser(MetaFileParser):
             else:
                 SectionType = self._SectionType
             self._ItemType = SectionType
 
             self._ValueList = ['', '', '']
+            # "SET pcd = pcd_expression" syntax is not supported in Dsc file.
+            if self._CurrentLine.upper().strip().startswith("SET "):
+                EdkLogger.error('Parser', FORMAT_INVALID, '''"SET pcd = pcd_expression" syntax is not support in Dsc file''',
+                                ExtraData=self._CurrentLine,
+                                File=self.MetaFile, Line=self._LineIndex + 1)
             self._SectionParser[SectionType](self)
             if self._ValueList is None:
                 continue
             #
             # Model, Value1, Value2, Value3, Arch, ModuleType, BelongsToItem=-1, BelongsToFile=-1,
-- 
2.19.1.windows.1