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80068b8c2c
This library will be used by clang-query. I can imagine LLDB becoming another client of this library, so I think LLVM is a sensible place for it to live. It wraps libedit, and adds tab completion support. The code is loosely based on the line editor bits in LLDB, with a few improvements: - Polymorphism for retrieving the list of tab completions, based on the concept pattern from the new pass manager. - Tab completion doesn't corrupt terminal output if the input covers multiple lines. Unfortunately this can only be done in a truly horrible way, as far as I can tell. But since the alternative is to implement our own line editor (which I don't think LLVM should be in the business of doing, at least for now) I think it may be acceptable. - Includes a fallback for the case where the user doesn't have libedit installed. Note that this uses C stdio, mainly because libedit also uses C stdio. Differential Revision: http://llvm-reviews.chandlerc.com/D2200 llvm-svn: 200595
83 lines
2.5 KiB
C++
83 lines
2.5 KiB
C++
//===-- LineEditor.cpp ----------------------------------------------------===//
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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/LineEditor/LineEditor.h"
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#include "llvm/Support/Path.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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class LineEditorTest : public testing::Test {
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public:
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SmallString<64> HistPath;
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LineEditor *LE;
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LineEditorTest() {
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init();
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}
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void init() {
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sys::fs::createTemporaryFile("temp", "history", HistPath);
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ASSERT_FALSE(HistPath.empty());
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LE = new LineEditor("test", HistPath);
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}
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~LineEditorTest() {
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delete LE;
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sys::fs::remove(HistPath.str());
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}
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};
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TEST_F(LineEditorTest, HistorySaveLoad) {
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LE->saveHistory();
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LE->loadHistory();
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}
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struct TestListCompleter {
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std::vector<LineEditor::Completion> Completions;
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TestListCompleter(const std::vector<LineEditor::Completion> &Completions)
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: Completions(Completions) {}
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std::vector<LineEditor::Completion> operator()(StringRef Buffer,
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size_t Pos) const {
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EXPECT_TRUE(Buffer.empty());
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EXPECT_EQ(0u, Pos);
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return Completions;
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}
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};
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TEST_F(LineEditorTest, ListCompleters) {
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std::vector<LineEditor::Completion> Comps;
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Comps.push_back(LineEditor::Completion("foo", "int foo()"));
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LE->setListCompleter(TestListCompleter(Comps));
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LineEditor::CompletionAction CA = LE->getCompletionAction("", 0);
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EXPECT_EQ(LineEditor::CompletionAction::AK_Insert, CA.Kind);
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EXPECT_EQ("foo", CA.Text);
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Comps.push_back(LineEditor::Completion("bar", "int bar()"));
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LE->setListCompleter(TestListCompleter(Comps));
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CA = LE->getCompletionAction("", 0);
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EXPECT_EQ(LineEditor::CompletionAction::AK_ShowCompletions, CA.Kind);
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ASSERT_EQ(2u, CA.Completions.size());
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ASSERT_EQ("int foo()", CA.Completions[0]);
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ASSERT_EQ("int bar()", CA.Completions[1]);
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Comps.clear();
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Comps.push_back(LineEditor::Completion("fee", "int fee()"));
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Comps.push_back(LineEditor::Completion("fi", "int fi()"));
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Comps.push_back(LineEditor::Completion("foe", "int foe()"));
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Comps.push_back(LineEditor::Completion("fum", "int fum()"));
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LE->setListCompleter(TestListCompleter(Comps));
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CA = LE->getCompletionAction("", 0);
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EXPECT_EQ(LineEditor::CompletionAction::AK_Insert, CA.Kind);
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EXPECT_EQ("f", CA.Text);
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}
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