From 145659f1d677face587b710726285df872a319c0 Mon Sep 17 00:00:00 2001
From: Haavard <havardpe@yahoo-inc.com>
Date: Mon, 23 Jan 2017 12:14:40 +0000
Subject: move code

---
 eval/src/apps/eval_expr/.gitignore     |  4 ++++
 eval/src/apps/eval_expr/CMakeLists.txt |  9 +++++++++
 eval/src/apps/eval_expr/eval_expr.cpp  | 27 +++++++++++++++++++++++++++
 3 files changed, 40 insertions(+)
 create mode 100644 eval/src/apps/eval_expr/.gitignore
 create mode 100644 eval/src/apps/eval_expr/CMakeLists.txt
 create mode 100644 eval/src/apps/eval_expr/eval_expr.cpp

(limited to 'eval/src/apps')

diff --git a/eval/src/apps/eval_expr/.gitignore b/eval/src/apps/eval_expr/.gitignore
new file mode 100644
index 00000000000..04661a7889c
--- /dev/null
+++ b/eval/src/apps/eval_expr/.gitignore
@@ -0,0 +1,4 @@
+/.depend
+/Makefile
+/eval_expr
+vespalib_eval_expr_app
diff --git a/eval/src/apps/eval_expr/CMakeLists.txt b/eval/src/apps/eval_expr/CMakeLists.txt
new file mode 100644
index 00000000000..f576295717a
--- /dev/null
+++ b/eval/src/apps/eval_expr/CMakeLists.txt
@@ -0,0 +1,9 @@
+# Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+vespa_add_executable(vespalib_eval_expr_app
+    SOURCES
+    eval_expr.cpp
+    INSTALL bin
+    DEPENDS
+    vespalib
+#    vespalib_vespalib_eval
+)
diff --git a/eval/src/apps/eval_expr/eval_expr.cpp b/eval/src/apps/eval_expr/eval_expr.cpp
new file mode 100644
index 00000000000..dc5274cde47
--- /dev/null
+++ b/eval/src/apps/eval_expr/eval_expr.cpp
@@ -0,0 +1,27 @@
+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+
+#include <vespa/fastos/fastos.h>
+#include <vespa/vespalib/eval/function.h>
+#include <vespa/vespalib/eval/interpreted_function.h>
+
+using namespace vespalib::eval;
+
+int main(int argc, char **argv) {
+    if (argc != 2) {
+        fprintf(stderr, "usage: %s <expr>\n", argv[0]);
+        fprintf(stderr, "  the expression must be self-contained (no arguments)\n");
+        fprintf(stderr, "  quote the expression to make it a single parameter\n");
+        fprintf(stderr, "  use let to simulate parameters: let(x, 1, x + 3)\n");
+        return 1;
+    }
+    Function function = Function::parse({}, argv[1]);
+    if (function.has_error()) {
+        fprintf(stderr, "expression error: %s\n", function.get_error().c_str());
+        return 1;
+    }
+    InterpretedFunction::Context ctx;
+    InterpretedFunction interpreted(SimpleTensorEngine::ref(), function, NodeTypes());
+    double result = interpreted.eval(ctx).as_double();
+    fprintf(stdout, "%.32g\n", result);
+    return 0;
+}
-- 
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