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f6b865d41a
This should allow users of the library to get a range to iterate through
all the subcommands that are registered to the global parser. This
allows users to define subcommands in libraries that self-register to
have dispatch done at a different stage (like main). It allows for
writing code like the following:
for (auto *S : cl::getRegisteredSubcommands()) {
if (*S) {
// Dispatch on S->getName().
}
}
This change also contains tests that show this usage pattern.
Reviewers: zturner, dblaikie, echristo
Subscribers: llvm-commits, mehdi_amini
Differential Revision: https://reviews.llvm.org/D24489
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@283296 91177308-0d34-0410-b5e6-96231b3b80d8
509 lines
16 KiB
C++
509 lines
16 KiB
C++
//===- llvm/unittest/Support/CommandLineTest.cpp - CommandLine tests ------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/Config/config.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/StringSaver.h"
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#include "gtest/gtest.h"
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#include <stdlib.h>
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#include <string>
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using namespace llvm;
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namespace {
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class TempEnvVar {
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public:
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TempEnvVar(const char *name, const char *value)
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: name(name) {
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const char *old_value = getenv(name);
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EXPECT_EQ(nullptr, old_value) << old_value;
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#if HAVE_SETENV
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setenv(name, value, true);
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#else
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# define SKIP_ENVIRONMENT_TESTS
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#endif
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}
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~TempEnvVar() {
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#if HAVE_SETENV
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// Assume setenv and unsetenv come together.
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unsetenv(name);
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#else
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(void)name; // Suppress -Wunused-private-field.
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#endif
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}
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private:
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const char *const name;
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};
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template <typename T>
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class StackOption : public cl::opt<T> {
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typedef cl::opt<T> Base;
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public:
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// One option...
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template<class M0t>
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explicit StackOption(const M0t &M0) : Base(M0) {}
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// Two options...
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template<class M0t, class M1t>
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StackOption(const M0t &M0, const M1t &M1) : Base(M0, M1) {}
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// Three options...
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template<class M0t, class M1t, class M2t>
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StackOption(const M0t &M0, const M1t &M1, const M2t &M2) : Base(M0, M1, M2) {}
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// Four options...
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template<class M0t, class M1t, class M2t, class M3t>
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StackOption(const M0t &M0, const M1t &M1, const M2t &M2, const M3t &M3)
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: Base(M0, M1, M2, M3) {}
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~StackOption() override { this->removeArgument(); }
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template <class DT> StackOption<T> &operator=(const DT &V) {
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this->setValue(V);
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return *this;
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}
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};
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class StackSubCommand : public cl::SubCommand {
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public:
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StackSubCommand(StringRef Name,
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StringRef Description = StringRef())
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: SubCommand(Name, Description) {}
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StackSubCommand() : SubCommand() {}
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~StackSubCommand() { unregisterSubCommand(); }
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};
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cl::OptionCategory TestCategory("Test Options", "Description");
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TEST(CommandLineTest, ModifyExisitingOption) {
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StackOption<int> TestOption("test-option", cl::desc("old description"));
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const char Description[] = "New description";
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const char ArgString[] = "new-test-option";
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const char ValueString[] = "Integer";
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StringMap<cl::Option *> &Map =
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cl::getRegisteredOptions(*cl::TopLevelSubCommand);
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ASSERT_TRUE(Map.count("test-option") == 1) <<
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"Could not find option in map.";
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cl::Option *Retrieved = Map["test-option"];
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ASSERT_EQ(&TestOption, Retrieved) << "Retrieved wrong option.";
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ASSERT_EQ(&cl::GeneralCategory,Retrieved->Category) <<
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"Incorrect default option category.";
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Retrieved->setCategory(TestCategory);
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ASSERT_EQ(&TestCategory,Retrieved->Category) <<
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"Failed to modify option's option category.";
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Retrieved->setDescription(Description);
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ASSERT_STREQ(Retrieved->HelpStr.data(), Description)
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<< "Changing option description failed.";
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Retrieved->setArgStr(ArgString);
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ASSERT_STREQ(ArgString, Retrieved->ArgStr.data())
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<< "Failed to modify option's Argument string.";
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Retrieved->setValueStr(ValueString);
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ASSERT_STREQ(Retrieved->ValueStr.data(), ValueString)
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<< "Failed to modify option's Value string.";
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Retrieved->setHiddenFlag(cl::Hidden);
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ASSERT_EQ(cl::Hidden, TestOption.getOptionHiddenFlag()) <<
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"Failed to modify option's hidden flag.";
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}
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#ifndef SKIP_ENVIRONMENT_TESTS
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const char test_env_var[] = "LLVM_TEST_COMMAND_LINE_FLAGS";
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cl::opt<std::string> EnvironmentTestOption("env-test-opt");
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TEST(CommandLineTest, ParseEnvironment) {
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TempEnvVar TEV(test_env_var, "-env-test-opt=hello");
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EXPECT_EQ("", EnvironmentTestOption);
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cl::ParseEnvironmentOptions("CommandLineTest", test_env_var);
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EXPECT_EQ("hello", EnvironmentTestOption);
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}
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// This test used to make valgrind complain
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// ("Conditional jump or move depends on uninitialised value(s)")
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//
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// Warning: Do not run any tests after this one that try to gain access to
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// registered command line options because this will likely result in a
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// SEGFAULT. This can occur because the cl::opt in the test below is declared
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// on the stack which will be destroyed after the test completes but the
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// command line system will still hold a pointer to a deallocated cl::Option.
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TEST(CommandLineTest, ParseEnvironmentToLocalVar) {
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// Put cl::opt on stack to check for proper initialization of fields.
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StackOption<std::string> EnvironmentTestOptionLocal("env-test-opt-local");
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TempEnvVar TEV(test_env_var, "-env-test-opt-local=hello-local");
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EXPECT_EQ("", EnvironmentTestOptionLocal);
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cl::ParseEnvironmentOptions("CommandLineTest", test_env_var);
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EXPECT_EQ("hello-local", EnvironmentTestOptionLocal);
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}
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#endif // SKIP_ENVIRONMENT_TESTS
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TEST(CommandLineTest, UseOptionCategory) {
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StackOption<int> TestOption2("test-option", cl::cat(TestCategory));
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ASSERT_EQ(&TestCategory,TestOption2.Category) << "Failed to assign Option "
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"Category.";
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}
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typedef void ParserFunction(StringRef Source, StringSaver &Saver,
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SmallVectorImpl<const char *> &NewArgv,
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bool MarkEOLs);
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void testCommandLineTokenizer(ParserFunction *parse, StringRef Input,
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const char *const Output[], size_t OutputSize) {
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SmallVector<const char *, 0> Actual;
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BumpPtrAllocator A;
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StringSaver Saver(A);
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parse(Input, Saver, Actual, /*MarkEOLs=*/false);
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EXPECT_EQ(OutputSize, Actual.size());
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for (unsigned I = 0, E = Actual.size(); I != E; ++I) {
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if (I < OutputSize)
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EXPECT_STREQ(Output[I], Actual[I]);
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}
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}
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TEST(CommandLineTest, TokenizeGNUCommandLine) {
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const char Input[] =
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"foo\\ bar \"foo bar\" \'foo bar\' 'foo\\\\bar' -DFOO=bar\\(\\) "
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"foo\"bar\"baz C:\\\\src\\\\foo.cpp \"C:\\src\\foo.cpp\"";
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const char *const Output[] = {
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"foo bar", "foo bar", "foo bar", "foo\\bar",
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"-DFOO=bar()", "foobarbaz", "C:\\src\\foo.cpp", "C:srcfoo.cpp"};
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testCommandLineTokenizer(cl::TokenizeGNUCommandLine, Input, Output,
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array_lengthof(Output));
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}
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TEST(CommandLineTest, TokenizeWindowsCommandLine) {
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const char Input[] = "a\\b c\\\\d e\\\\\"f g\" h\\\"i j\\\\\\\"k \"lmn\" o pqr "
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"\"st \\\"u\" \\v";
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const char *const Output[] = { "a\\b", "c\\\\d", "e\\f g", "h\"i", "j\\\"k",
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"lmn", "o", "pqr", "st \"u", "\\v" };
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testCommandLineTokenizer(cl::TokenizeWindowsCommandLine, Input, Output,
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array_lengthof(Output));
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}
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TEST(CommandLineTest, AliasesWithArguments) {
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static const size_t ARGC = 3;
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const char *const Inputs[][ARGC] = {
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{ "-tool", "-actual=x", "-extra" },
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{ "-tool", "-actual", "x" },
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{ "-tool", "-alias=x", "-extra" },
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{ "-tool", "-alias", "x" }
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};
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for (size_t i = 0, e = array_lengthof(Inputs); i < e; ++i) {
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StackOption<std::string> Actual("actual");
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StackOption<bool> Extra("extra");
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StackOption<std::string> Input(cl::Positional);
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cl::alias Alias("alias", llvm::cl::aliasopt(Actual));
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cl::ParseCommandLineOptions(ARGC, Inputs[i]);
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EXPECT_EQ("x", Actual);
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EXPECT_EQ(0, Input.getNumOccurrences());
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Alias.removeArgument();
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}
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}
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void testAliasRequired(int argc, const char *const *argv) {
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StackOption<std::string> Option("option", cl::Required);
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cl::alias Alias("o", llvm::cl::aliasopt(Option));
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cl::ParseCommandLineOptions(argc, argv);
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EXPECT_EQ("x", Option);
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EXPECT_EQ(1, Option.getNumOccurrences());
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Alias.removeArgument();
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}
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TEST(CommandLineTest, AliasRequired) {
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const char *opts1[] = { "-tool", "-option=x" };
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const char *opts2[] = { "-tool", "-o", "x" };
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testAliasRequired(array_lengthof(opts1), opts1);
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testAliasRequired(array_lengthof(opts2), opts2);
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}
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TEST(CommandLineTest, HideUnrelatedOptions) {
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StackOption<int> TestOption1("hide-option-1");
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StackOption<int> TestOption2("hide-option-2", cl::cat(TestCategory));
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cl::HideUnrelatedOptions(TestCategory);
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ASSERT_EQ(cl::ReallyHidden, TestOption1.getOptionHiddenFlag())
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<< "Failed to hide extra option.";
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ASSERT_EQ(cl::NotHidden, TestOption2.getOptionHiddenFlag())
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<< "Hid extra option that should be visable.";
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StringMap<cl::Option *> &Map =
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cl::getRegisteredOptions(*cl::TopLevelSubCommand);
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ASSERT_EQ(cl::NotHidden, Map["help"]->getOptionHiddenFlag())
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<< "Hid default option that should be visable.";
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}
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cl::OptionCategory TestCategory2("Test Options set 2", "Description");
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TEST(CommandLineTest, HideUnrelatedOptionsMulti) {
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StackOption<int> TestOption1("multi-hide-option-1");
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StackOption<int> TestOption2("multi-hide-option-2", cl::cat(TestCategory));
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StackOption<int> TestOption3("multi-hide-option-3", cl::cat(TestCategory2));
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const cl::OptionCategory *VisibleCategories[] = {&TestCategory,
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&TestCategory2};
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cl::HideUnrelatedOptions(makeArrayRef(VisibleCategories));
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ASSERT_EQ(cl::ReallyHidden, TestOption1.getOptionHiddenFlag())
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<< "Failed to hide extra option.";
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ASSERT_EQ(cl::NotHidden, TestOption2.getOptionHiddenFlag())
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<< "Hid extra option that should be visable.";
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ASSERT_EQ(cl::NotHidden, TestOption3.getOptionHiddenFlag())
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<< "Hid extra option that should be visable.";
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StringMap<cl::Option *> &Map =
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cl::getRegisteredOptions(*cl::TopLevelSubCommand);
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ASSERT_EQ(cl::NotHidden, Map["help"]->getOptionHiddenFlag())
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<< "Hid default option that should be visable.";
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}
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TEST(CommandLineTest, SetValueInSubcategories) {
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cl::ResetCommandLineParser();
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StackSubCommand SC1("sc1", "First subcommand");
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StackSubCommand SC2("sc2", "Second subcommand");
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StackOption<bool> TopLevelOpt("top-level", cl::init(false));
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StackOption<bool> SC1Opt("sc1", cl::sub(SC1), cl::init(false));
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StackOption<bool> SC2Opt("sc2", cl::sub(SC2), cl::init(false));
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EXPECT_FALSE(TopLevelOpt);
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EXPECT_FALSE(SC1Opt);
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EXPECT_FALSE(SC2Opt);
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const char *args[] = {"prog", "-top-level"};
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EXPECT_TRUE(cl::ParseCommandLineOptions(2, args, StringRef(), true));
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EXPECT_TRUE(TopLevelOpt);
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EXPECT_FALSE(SC1Opt);
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EXPECT_FALSE(SC2Opt);
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TopLevelOpt = false;
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cl::ResetAllOptionOccurrences();
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EXPECT_FALSE(TopLevelOpt);
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EXPECT_FALSE(SC1Opt);
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EXPECT_FALSE(SC2Opt);
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const char *args2[] = {"prog", "sc1", "-sc1"};
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EXPECT_TRUE(cl::ParseCommandLineOptions(3, args2, StringRef(), true));
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EXPECT_FALSE(TopLevelOpt);
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EXPECT_TRUE(SC1Opt);
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EXPECT_FALSE(SC2Opt);
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SC1Opt = false;
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cl::ResetAllOptionOccurrences();
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EXPECT_FALSE(TopLevelOpt);
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EXPECT_FALSE(SC1Opt);
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EXPECT_FALSE(SC2Opt);
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const char *args3[] = {"prog", "sc2", "-sc2"};
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EXPECT_TRUE(cl::ParseCommandLineOptions(3, args3, StringRef(), true));
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EXPECT_FALSE(TopLevelOpt);
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EXPECT_FALSE(SC1Opt);
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EXPECT_TRUE(SC2Opt);
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}
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TEST(CommandLineTest, LookupFailsInWrongSubCommand) {
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cl::ResetCommandLineParser();
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StackSubCommand SC1("sc1", "First subcommand");
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StackSubCommand SC2("sc2", "Second subcommand");
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StackOption<bool> SC1Opt("sc1", cl::sub(SC1), cl::init(false));
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StackOption<bool> SC2Opt("sc2", cl::sub(SC2), cl::init(false));
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const char *args[] = {"prog", "sc1", "-sc2"};
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EXPECT_FALSE(cl::ParseCommandLineOptions(3, args, StringRef(), true));
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}
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TEST(CommandLineTest, AddToAllSubCommands) {
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cl::ResetCommandLineParser();
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StackSubCommand SC1("sc1", "First subcommand");
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StackOption<bool> AllOpt("everywhere", cl::sub(*cl::AllSubCommands),
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cl::init(false));
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StackSubCommand SC2("sc2", "Second subcommand");
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const char *args[] = {"prog", "-everywhere"};
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const char *args2[] = {"prog", "sc1", "-everywhere"};
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const char *args3[] = {"prog", "sc2", "-everywhere"};
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EXPECT_FALSE(AllOpt);
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EXPECT_TRUE(cl::ParseCommandLineOptions(2, args, StringRef(), true));
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EXPECT_TRUE(AllOpt);
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AllOpt = false;
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cl::ResetAllOptionOccurrences();
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EXPECT_FALSE(AllOpt);
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EXPECT_TRUE(cl::ParseCommandLineOptions(3, args2, StringRef(), true));
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EXPECT_TRUE(AllOpt);
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AllOpt = false;
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cl::ResetAllOptionOccurrences();
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EXPECT_FALSE(AllOpt);
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EXPECT_TRUE(cl::ParseCommandLineOptions(3, args3, StringRef(), true));
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EXPECT_TRUE(AllOpt);
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}
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TEST(CommandLineTest, ReparseCommandLineOptions) {
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cl::ResetCommandLineParser();
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StackOption<bool> TopLevelOpt("top-level", cl::sub(*cl::TopLevelSubCommand),
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cl::init(false));
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const char *args[] = {"prog", "-top-level"};
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EXPECT_FALSE(TopLevelOpt);
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EXPECT_TRUE(cl::ParseCommandLineOptions(2, args, StringRef(), true));
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EXPECT_TRUE(TopLevelOpt);
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TopLevelOpt = false;
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cl::ResetAllOptionOccurrences();
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EXPECT_FALSE(TopLevelOpt);
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EXPECT_TRUE(cl::ParseCommandLineOptions(2, args, StringRef(), true));
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EXPECT_TRUE(TopLevelOpt);
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}
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TEST(CommandLineTest, RemoveFromRegularSubCommand) {
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cl::ResetCommandLineParser();
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StackSubCommand SC("sc", "Subcommand");
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StackOption<bool> RemoveOption("remove-option", cl::sub(SC), cl::init(false));
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StackOption<bool> KeepOption("keep-option", cl::sub(SC), cl::init(false));
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const char *args[] = {"prog", "sc", "-remove-option"};
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EXPECT_FALSE(RemoveOption);
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EXPECT_TRUE(cl::ParseCommandLineOptions(3, args, StringRef(), true));
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EXPECT_TRUE(RemoveOption);
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RemoveOption.removeArgument();
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cl::ResetAllOptionOccurrences();
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EXPECT_FALSE(cl::ParseCommandLineOptions(3, args, StringRef(), true));
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}
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TEST(CommandLineTest, RemoveFromTopLevelSubCommand) {
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cl::ResetCommandLineParser();
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StackOption<bool> TopLevelRemove(
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"top-level-remove", cl::sub(*cl::TopLevelSubCommand), cl::init(false));
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StackOption<bool> TopLevelKeep(
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"top-level-keep", cl::sub(*cl::TopLevelSubCommand), cl::init(false));
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const char *args[] = {"prog", "-top-level-remove"};
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EXPECT_FALSE(TopLevelRemove);
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EXPECT_TRUE(cl::ParseCommandLineOptions(2, args, StringRef(), true));
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EXPECT_TRUE(TopLevelRemove);
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TopLevelRemove.removeArgument();
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cl::ResetAllOptionOccurrences();
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EXPECT_FALSE(cl::ParseCommandLineOptions(2, args, StringRef(), true));
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}
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TEST(CommandLineTest, RemoveFromAllSubCommands) {
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cl::ResetCommandLineParser();
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StackSubCommand SC1("sc1", "First Subcommand");
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StackSubCommand SC2("sc2", "Second Subcommand");
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StackOption<bool> RemoveOption("remove-option", cl::sub(*cl::AllSubCommands),
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cl::init(false));
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StackOption<bool> KeepOption("keep-option", cl::sub(*cl::AllSubCommands),
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cl::init(false));
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const char *args0[] = {"prog", "-remove-option"};
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const char *args1[] = {"prog", "sc1", "-remove-option"};
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const char *args2[] = {"prog", "sc2", "-remove-option"};
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// It should work for all subcommands including the top-level.
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EXPECT_FALSE(RemoveOption);
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EXPECT_TRUE(cl::ParseCommandLineOptions(2, args0, StringRef(), true));
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EXPECT_TRUE(RemoveOption);
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RemoveOption = false;
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cl::ResetAllOptionOccurrences();
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EXPECT_FALSE(RemoveOption);
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EXPECT_TRUE(cl::ParseCommandLineOptions(3, args1, StringRef(), true));
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EXPECT_TRUE(RemoveOption);
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RemoveOption = false;
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cl::ResetAllOptionOccurrences();
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EXPECT_FALSE(RemoveOption);
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EXPECT_TRUE(cl::ParseCommandLineOptions(3, args2, StringRef(), true));
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EXPECT_TRUE(RemoveOption);
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RemoveOption.removeArgument();
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// It should not work for any subcommands including the top-level.
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cl::ResetAllOptionOccurrences();
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EXPECT_FALSE(cl::ParseCommandLineOptions(2, args0, StringRef(), true));
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cl::ResetAllOptionOccurrences();
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EXPECT_FALSE(cl::ParseCommandLineOptions(3, args1, StringRef(), true));
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cl::ResetAllOptionOccurrences();
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EXPECT_FALSE(cl::ParseCommandLineOptions(3, args2, StringRef(), true));
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}
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TEST(CommandLineTest, GetRegisteredSubcommands) {
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cl::ResetCommandLineParser();
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StackSubCommand SC1("sc1", "First Subcommand");
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StackOption<bool> Opt1("opt1", cl::sub(SC1), cl::init(false));
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StackSubCommand SC2("sc2", "Second subcommand");
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StackOption<bool> Opt2("opt2", cl::sub(SC2), cl::init(false));
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const char *args0[] = {"prog", "sc1"};
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const char *args1[] = {"prog", "sc2"};
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EXPECT_TRUE(cl::ParseCommandLineOptions(2, args0, StringRef(), true));
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EXPECT_FALSE(Opt1);
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EXPECT_FALSE(Opt2);
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for (auto *S : cl::getRegisteredSubcommands()) {
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if (*S)
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EXPECT_EQ("sc1", S->getName());
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}
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|
|
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cl::ResetAllOptionOccurrences();
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EXPECT_TRUE(cl::ParseCommandLineOptions(2, args1, StringRef(), true));
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EXPECT_FALSE(Opt1);
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EXPECT_FALSE(Opt2);
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for (auto *S : cl::getRegisteredSubcommands()) {
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if (*S)
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EXPECT_EQ("sc2", S->getName());
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}
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}
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|
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} // anonymous namespace
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