WIP: Support for other source target language (#971)

* WIP: Setting up C/Cpp source compilation targets.

* WIP: Emitting C/CPP.

* WIP: Split out SourceSink, and use it for source output on emit.

* SourceSink -> SourceStream

* * Made SourceStream use m_ prefixing of members.
* Make all methods use lower camel
* Removed methods from SourceStream interface that are not used externally (use _ prefixing)
* Improvements to documentation

* EmitContext is now effectively empty, so just use SharedEmitContext as EmitContext.

* SharedEmitContext -> EmitContext

* Methods to LowerCamel in emit.cpp

* Split out EmitContext and ExtensionUsageTracker into separate files.

* Split out EmitVisitor into slang-c-like-source-emitter files.

* EmitVisitor -> CLikeSourceEmitter

* Tidy up around CLikeSourceEmitter - simplify header.

* Small tidy up - removing repeated comments that are in header.

* Remove EmitContext paramter threading.

* Small tidy up.
Use prefixed macros for slang-c-like-source-emitter.h

* Small tidy up in slang-c-like-source-emitter.cpp

* First pass at splitting out UnmangleContext.

* MangledNameParser -> MangledLexer.

* WIP making EmitOp (EOp) enum available outside of cpp

* Generating EmitOpInfo from macro.

* Split out emit precedence handling.
Don't use kOp_ style anymore, just use an array indexed by EmitOp.

* Disable C simple test for now.

* Keep g++/clang happy with token pasting.

* Fix win32 narrowing warning.

1 files changed, 17 insertions, 0 deletions

diff --git a/source/slang/compiler.cpp b/source/slang/compiler.cpp
index 83a579345..22c1d4cd8 100644
--- a/source/slang/compiler.cpp
+++ b/source/slang/compiler.cpp
@@ -365,6 +365,12 @@ namespace Slang
             {
                 return PassThroughMode::dxc;
             }
+            case CodeGenTarget::CPPSource:
+            case CodeGenTarget::CSource:
+            {
+                // Don't need an external compiler to output C and C++ code
+                return PassThroughMode::None;
+            }
 
             default: break;
         }
@@ -1051,6 +1057,17 @@ SlangResult dissassembleDXILUsingDXC(
             }
             break;
 
+        case CodeGenTarget::CPPSource:
+        case CodeGenTarget::CSource:
+            {
+                return emitEntryPoint(
+                    compileRequest,
+                    entryPoint,
+                    target, 
+                    targetReq);
+            }
+            break;
+
 #if SLANG_ENABLE_DXBC_SUPPORT
         case CodeGenTarget::DXBytecode:
             {