vbscript: Added exp expression parser/compiler implementation.

dlls/vbscript/compile.c

@@ -361,6 +361,8 @@ static HRESULT compile_expression(compile_ctx_t *ctx, expression_t *expr)
         return push_instr(ctx, OP_empty) != -1 ? S_OK : E_OUTOFMEMORY;
     case EXPR_EQUAL:
         return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_equal);
+    case EXPR_EXP:
+        return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_exp);
     case EXPR_IDIV:
         return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_idiv);
     case EXPR_MEMBER:

dlls/vbscript/interp.c

@@ -738,6 +738,12 @@ static HRESULT interp_mul(exec_ctx_t *ctx)
     return stack_push(ctx, &v);
 }
 
+static HRESULT interp_exp(exec_ctx_t *ctx)
+{
+    FIXME("\n");
+    return E_NOTIMPL;
+}
+
 static HRESULT interp_neg(exec_ctx_t *ctx)
 {
     variant_val_t val;

dlls/vbscript/parse.h

@@ -24,6 +24,7 @@ typedef enum {
     EXPR_DOUBLE,
     EXPR_EMPTY,
     EXPR_EQUAL,
+    EXPR_EXP,
     EXPR_IDIV,
     EXPR_MEMBER,
     EXPR_MOD,

dlls/vbscript/parser.y

@@ -210,7 +210,8 @@ MultiplicativeExpression
                                                 { $$ = new_binary_expression(ctx, EXPR_DIV, $1, $3); CHECK_ERROR; }
 
 ExpExpression
-    : UnaryExpression /* FIXME */   { $$ = $1; }
+    : UnaryExpression                           { $$ = $1; }
+    | ExpExpression '^' UnaryExpression         { $$ = new_binary_expression(ctx, EXPR_EXP, $1, $3); CHECK_ERROR; }
 
 UnaryExpression
     : LiteralExpression             { $$ = $1; }

dlls/vbscript/vbscript.h

@@ -107,6 +107,7 @@ typedef enum {
     X(double,         1, ARG_DOUBLE,  0)          \
     X(empty,          1, 0,           0)          \
     X(equal,          1, 0,           0)          \
+    X(exp,            1, 0,           0)          \
     X(icall,          1, ARG_BSTR,    ARG_UINT)   \
     X(icallv,         1, ARG_BSTR,    ARG_UINT)   \
     X(idiv,           1, 0,           0)          \