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authorIan Jackson <ijackson@chiark.greenend.org.uk>2016-07-13 21:24:43 +0100
committerIan Jackson <ijackson@chiark.greenend.org.uk>2016-07-13 21:24:43 +0100
commitcba4af1b7643b0da036ff78fd152f74a906c4e97 (patch)
tree84f90cc1a9542b2f374932b04ea0752eabbd3741 /pcre_scanner_unittest.cc
Commit upstream pcre-8.39.tar.bz2
Diffstat (limited to 'pcre_scanner_unittest.cc')
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diff --git a/pcre_scanner_unittest.cc b/pcre_scanner_unittest.cc
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+// Copyright (c) 2005, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Author: Greg J. Badros
+//
+// Unittest for scanner, especially GetNextComments and GetComments()
+// functionality.
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+#include <string.h> /* for strchr */
+#include <string>
+#include <vector>
+
+#include "pcrecpp.h"
+#include "pcre_stringpiece.h"
+#include "pcre_scanner.h"
+
+#define FLAGS_unittest_stack_size 49152
+
+// Dies with a fatal error if the two values are not equal.
+#define CHECK_EQ(a, b) do { \
+ if ( (a) != (b) ) { \
+ fprintf(stderr, "%s:%d: Check failed because %s != %s\n", \
+ __FILE__, __LINE__, #a, #b); \
+ exit(1); \
+ } \
+} while (0)
+
+using std::vector;
+using pcrecpp::StringPiece;
+using pcrecpp::Scanner;
+
+static void TestScanner() {
+ const char input[] = "\n"
+ "alpha = 1; // this sets alpha\n"
+ "bravo = 2; // bravo is set here\n"
+ "gamma = 33; /* and here is gamma */\n";
+
+ const char *re = "(\\w+) = (\\d+);";
+
+ Scanner s(input);
+ string var;
+ int number;
+ s.SkipCXXComments();
+ s.set_save_comments(true);
+ vector<StringPiece> comments;
+
+ s.Consume(re, &var, &number);
+ CHECK_EQ(var, "alpha");
+ CHECK_EQ(number, 1);
+ CHECK_EQ(s.LineNumber(), 3);
+ s.GetNextComments(&comments);
+ CHECK_EQ(comments.size(), 1);
+ CHECK_EQ(comments[0].as_string(), " // this sets alpha\n");
+ comments.resize(0);
+
+ s.Consume(re, &var, &number);
+ CHECK_EQ(var, "bravo");
+ CHECK_EQ(number, 2);
+ s.GetNextComments(&comments);
+ CHECK_EQ(comments.size(), 1);
+ CHECK_EQ(comments[0].as_string(), " // bravo is set here\n");
+ comments.resize(0);
+
+ s.Consume(re, &var, &number);
+ CHECK_EQ(var, "gamma");
+ CHECK_EQ(number, 33);
+ s.GetNextComments(&comments);
+ CHECK_EQ(comments.size(), 1);
+ CHECK_EQ(comments[0].as_string(), " /* and here is gamma */\n");
+ comments.resize(0);
+
+ s.GetComments(0, sizeof(input), &comments);
+ CHECK_EQ(comments.size(), 3);
+ CHECK_EQ(comments[0].as_string(), " // this sets alpha\n");
+ CHECK_EQ(comments[1].as_string(), " // bravo is set here\n");
+ CHECK_EQ(comments[2].as_string(), " /* and here is gamma */\n");
+ comments.resize(0);
+
+ s.GetComments(0, (int)(strchr(input, '/') - input), &comments);
+ CHECK_EQ(comments.size(), 0);
+ comments.resize(0);
+
+ s.GetComments((int)(strchr(input, '/') - input - 1), sizeof(input),
+ &comments);
+ CHECK_EQ(comments.size(), 3);
+ CHECK_EQ(comments[0].as_string(), " // this sets alpha\n");
+ CHECK_EQ(comments[1].as_string(), " // bravo is set here\n");
+ CHECK_EQ(comments[2].as_string(), " /* and here is gamma */\n");
+ comments.resize(0);
+
+ s.GetComments((int)(strchr(input, '/') - input - 1),
+ (int)(strchr(input + 1, '\n') - input + 1), &comments);
+ CHECK_EQ(comments.size(), 1);
+ CHECK_EQ(comments[0].as_string(), " // this sets alpha\n");
+ comments.resize(0);
+}
+
+static void TestBigComment() {
+ string input;
+ for (int i = 0; i < 1024; ++i) {
+ char buf[1024]; // definitely big enough
+ sprintf(buf, " # Comment %d\n", i);
+ input += buf;
+ }
+ input += "name = value;\n";
+
+ Scanner s(input.c_str());
+ s.SetSkipExpression("\\s+|#.*\n");
+
+ string name;
+ string value;
+ s.Consume("(\\w+) = (\\w+);", &name, &value);
+ CHECK_EQ(name, "name");
+ CHECK_EQ(value, "value");
+}
+
+// TODO: also test scanner and big-comment in a thread with a
+// small stack size
+
+int main(int argc, char** argv) {
+ (void)argc;
+ (void)argv;
+ TestScanner();
+ TestBigComment();
+
+ // Done
+ printf("OK\n");
+
+ return 0;
+}