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-rw-r--r--edify/edify_parser.cpp78
1 files changed, 78 insertions, 0 deletions
diff --git a/edify/edify_parser.cpp b/edify/edify_parser.cpp
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+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * This is a host-side tool for validating a given edify script file.
+ *
+ * We used to have edify test cases here, which have been moved to
+ * tests/component/edify_test.cpp.
+ *
+ * Caveat: It doesn't recognize functions defined through updater, which
+ * makes the tool less useful. We should either extend the tool or remove it.
+ */
+
+#include <errno.h>
+#include <stdio.h>
+
+#include <string>
+
+#include <android-base/file.h>
+
+#include "expr.h"
+
+static void ExprDump(int depth, const Expr* n, const std::string& script) {
+ printf("%*s", depth*2, "");
+ printf("%s %p (%d-%d) \"%s\"\n",
+ n->name == NULL ? "(NULL)" : n->name, n->fn, n->start, n->end,
+ script.substr(n->start, n->end - n->start).c_str());
+ for (int i = 0; i < n->argc; ++i) {
+ ExprDump(depth+1, n->argv[i], script);
+ }
+}
+
+int main(int argc, char** argv) {
+ RegisterBuiltins();
+
+ if (argc != 2) {
+ printf("Usage: %s <edify script>\n", argv[0]);
+ return 1;
+ }
+
+ std::string buffer;
+ if (!android::base::ReadFileToString(argv[1], &buffer)) {
+ printf("%s: failed to read %s: %s\n", argv[0], argv[1], strerror(errno));
+ return 1;
+ }
+
+ Expr* root;
+ int error_count = 0;
+ int error = parse_string(buffer.data(), &root, &error_count);
+ printf("parse returned %d; %d errors encountered\n", error, error_count);
+ if (error == 0 || error_count > 0) {
+
+ ExprDump(0, root, buffer);
+
+ State state(buffer, nullptr);
+ std::string result;
+ if (!Evaluate(&state, root, &result)) {
+ printf("result was NULL, message is: %s\n",
+ (state.errmsg.empty() ? "(NULL)" : state.errmsg.c_str()));
+ } else {
+ printf("result is [%s]\n", result.c_str());
+ }
+ }
+ return 0;
+}