Created a simple integer expression repl.

To enable, just change -version=SDCCOMPILER with
-version=SDCREPL and recompile. Integer constants
only, at the moment.

makefile

@@ -3,7 +3,7 @@ include makefile.common
 PLATFORM = $(shell uname -s)
 ARCHFLAG ?= -m32
 SOURCE = $(SOURCE_WILDCARDS)
-DFLAGS = $(ARCHFLAG) -w -debug -gc -unittest -Iimport
+DFLAGS = $(ARCHFLAG) -w -debug -gc -unittest -Iimport -version=SDCCOMPILER
 OBJ = sdc.o
 EXE = bin/sdc
 

makefile.gdc

@@ -1,6 +1,6 @@
 include makefile.common
 
-DFLAGS = -g -Wall -Werror -funittest -I./import -Isrc -m32
+DFLAGS = -g -Wall -Werror -funittest -I./import -Isrc -m32 -version=SDCCOMPILER
 SOURCE = $(wildcard $SOURCE_WILDCARDS)
 OBJS = $(SOURCE:.d=.o)
 EXE = sdc

makefile.windows

@@ -1,6 +1,6 @@
 include makefile.common
 
-DFLAGS = -w -debug -g -unittest -Iimport -Isrc $(FLAGS)
+DFLAGS = -version=SDCCOMPILER -w -debug -g -unittest -Iimport -Isrc $(FLAGS)
 SOURCE = \
 	src/sdc/ast/*.d \
 	src/sdc/parser/*.d \

src/sdc/repl.d

@@ -0,0 +1,52 @@
+module sdc.repl;
+version (SDCREPL):
+
+import std.process;
+import std.stdio;
+
+import llvm.c.Core;
+import llvm.c.Initialization;
+
+import sdc.aglobal;
+import sdc.lexer;
+import sdc.location;
+import sdc.source;
+import sdc.util;
+import sdc.ast.base;
+import sdc.parser.base;
+import sdc.parser.expression;
+import sdc.gen.expression;
+import sdc.gen.sdcmodule;
+
+extern (C) void _Z18LLVMInitializeCoreP22LLVMOpaquePassRegistry(LLVMPassRegistryRef);
+
+string premain = "void main() {";
+string postmain = "}";
+
+void main(string[] args)
+{
+    auto passRegistry = LLVMGetGlobalPassRegistry();
+    _Z18LLVMInitializeCoreP22LLVMOpaquePassRegistry(passRegistry);  // TMP !!!
+    LLVMInitializeCodeGen(passRegistry);
+
+    globalInit("x86-64");
+
+    auto location = Location("/dev/null");
+    auto bitcode = temporaryFilename(".bc"), assembly = temporaryFilename(".s"), object = temporaryFilename(".o");
+
+    auto namesrc = new Source("fake.module", location);
+    auto namelex = lex(namesrc);
+    namelex.get(); // skip BEGIN
+    auto name = parseQualifiedName(namelex);
+    auto mod = new Module(name);
+
+    while (true) {
+        auto input = stdin.readln();
+        auto src = new Source(input, location);
+        auto tstream = lex(src);
+        tstream.get();  // skip BEGIN
+        auto exp = parseExpression(tstream);
+        auto val = genExpression(exp, mod);
+        writeln("=> ", val.knownInt);
+    }
+}

src/sdc/sdc.d

@@ -18,6 +18,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 module sdc.sdc;
+version (SDCCOMPILER):
 
 import std.algorithm;
 import std.array;