331 lines
12 KiB
C++
331 lines
12 KiB
C++
//===- unittest/ASTMatchers/Dynamic/ParserTest.cpp - Parser unit 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 "../ASTMatchersTest.h"
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#include "clang/ASTMatchers/Dynamic/Parser.h"
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#include "clang/ASTMatchers/Dynamic/Registry.h"
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#include "llvm/ADT/Optional.h"
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#include "llvm/ADT/StringMap.h"
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#include "gtest/gtest.h"
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#include <string>
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#include <vector>
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namespace clang {
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namespace ast_matchers {
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namespace dynamic {
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namespace {
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class MockSema : public Parser::Sema {
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public:
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~MockSema() override {}
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uint64_t expectMatcher(StringRef MatcherName) {
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// Optimizations on the matcher framework make simple matchers like
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// 'stmt()' to be all the same matcher.
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// Use a more complex expression to prevent that.
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ast_matchers::internal::Matcher<Stmt> M = stmt(stmt(), stmt());
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ExpectedMatchers.insert(std::make_pair(MatcherName, M));
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return M.getID().second;
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}
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void parse(StringRef Code) {
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Diagnostics Error;
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VariantValue Value;
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Parser::parseExpression(Code, this, &Value, &Error);
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Values.push_back(Value);
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Errors.push_back(Error.toStringFull());
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}
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llvm::Optional<MatcherCtor>
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lookupMatcherCtor(StringRef MatcherName) override {
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const ExpectedMatchersTy::value_type *Matcher =
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&*ExpectedMatchers.find(MatcherName);
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return reinterpret_cast<MatcherCtor>(Matcher);
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}
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VariantMatcher actOnMatcherExpression(MatcherCtor Ctor,
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SourceRange NameRange,
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StringRef BindID,
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ArrayRef<ParserValue> Args,
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Diagnostics *Error) override {
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const ExpectedMatchersTy::value_type *Matcher =
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reinterpret_cast<const ExpectedMatchersTy::value_type *>(Ctor);
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MatcherInfo ToStore = { Matcher->first, NameRange, Args, BindID };
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Matchers.push_back(ToStore);
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return VariantMatcher::SingleMatcher(Matcher->second);
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}
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struct MatcherInfo {
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StringRef MatcherName;
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SourceRange NameRange;
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std::vector<ParserValue> Args;
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std::string BoundID;
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};
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std::vector<std::string> Errors;
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std::vector<VariantValue> Values;
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std::vector<MatcherInfo> Matchers;
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typedef std::map<std::string, ast_matchers::internal::Matcher<Stmt> >
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ExpectedMatchersTy;
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ExpectedMatchersTy ExpectedMatchers;
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};
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TEST(ParserTest, ParseUnsigned) {
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MockSema Sema;
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Sema.parse("0");
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Sema.parse("123");
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Sema.parse("0x1f");
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Sema.parse("12345678901");
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Sema.parse("1a1");
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EXPECT_EQ(5U, Sema.Values.size());
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EXPECT_EQ(0U, Sema.Values[0].getUnsigned());
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EXPECT_EQ(123U, Sema.Values[1].getUnsigned());
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EXPECT_EQ(31U, Sema.Values[2].getUnsigned());
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EXPECT_EQ("1:1: Error parsing unsigned token: <12345678901>", Sema.Errors[3]);
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EXPECT_EQ("1:1: Error parsing unsigned token: <1a1>", Sema.Errors[4]);
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}
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TEST(ParserTest, ParseString) {
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MockSema Sema;
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Sema.parse("\"Foo\"");
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Sema.parse("\"\"");
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Sema.parse("\"Baz");
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EXPECT_EQ(3ULL, Sema.Values.size());
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EXPECT_EQ("Foo", Sema.Values[0].getString());
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EXPECT_EQ("", Sema.Values[1].getString());
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EXPECT_EQ("1:1: Error parsing string token: <\"Baz>", Sema.Errors[2]);
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}
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bool matchesRange(SourceRange Range, unsigned StartLine,
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unsigned EndLine, unsigned StartColumn, unsigned EndColumn) {
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EXPECT_EQ(StartLine, Range.Start.Line);
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EXPECT_EQ(EndLine, Range.End.Line);
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EXPECT_EQ(StartColumn, Range.Start.Column);
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EXPECT_EQ(EndColumn, Range.End.Column);
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return Range.Start.Line == StartLine && Range.End.Line == EndLine &&
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Range.Start.Column == StartColumn && Range.End.Column == EndColumn;
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}
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llvm::Optional<DynTypedMatcher> getSingleMatcher(const VariantValue &Value) {
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llvm::Optional<DynTypedMatcher> Result =
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Value.getMatcher().getSingleMatcher();
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EXPECT_TRUE(Result.hasValue());
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return Result;
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}
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TEST(ParserTest, ParseMatcher) {
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MockSema Sema;
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const uint64_t ExpectedFoo = Sema.expectMatcher("Foo");
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const uint64_t ExpectedBar = Sema.expectMatcher("Bar");
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const uint64_t ExpectedBaz = Sema.expectMatcher("Baz");
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Sema.parse(" Foo ( Bar ( 17), Baz( \n \"B A,Z\") ) .bind( \"Yo!\") ");
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for (size_t i = 0, e = Sema.Errors.size(); i != e; ++i) {
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EXPECT_EQ("", Sema.Errors[i]);
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}
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EXPECT_NE(ExpectedFoo, ExpectedBar);
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EXPECT_NE(ExpectedFoo, ExpectedBaz);
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EXPECT_NE(ExpectedBar, ExpectedBaz);
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EXPECT_EQ(1ULL, Sema.Values.size());
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EXPECT_EQ(ExpectedFoo, getSingleMatcher(Sema.Values[0])->getID().second);
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EXPECT_EQ(3ULL, Sema.Matchers.size());
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const MockSema::MatcherInfo Bar = Sema.Matchers[0];
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EXPECT_EQ("Bar", Bar.MatcherName);
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EXPECT_TRUE(matchesRange(Bar.NameRange, 1, 1, 8, 17));
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EXPECT_EQ(1ULL, Bar.Args.size());
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EXPECT_EQ(17U, Bar.Args[0].Value.getUnsigned());
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const MockSema::MatcherInfo Baz = Sema.Matchers[1];
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EXPECT_EQ("Baz", Baz.MatcherName);
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EXPECT_TRUE(matchesRange(Baz.NameRange, 1, 2, 19, 10));
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EXPECT_EQ(1ULL, Baz.Args.size());
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EXPECT_EQ("B A,Z", Baz.Args[0].Value.getString());
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const MockSema::MatcherInfo Foo = Sema.Matchers[2];
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EXPECT_EQ("Foo", Foo.MatcherName);
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EXPECT_TRUE(matchesRange(Foo.NameRange, 1, 2, 2, 12));
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EXPECT_EQ(2ULL, Foo.Args.size());
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EXPECT_EQ(ExpectedBar, getSingleMatcher(Foo.Args[0].Value)->getID().second);
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EXPECT_EQ(ExpectedBaz, getSingleMatcher(Foo.Args[1].Value)->getID().second);
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EXPECT_EQ("Yo!", Foo.BoundID);
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}
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using ast_matchers::internal::Matcher;
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Parser::NamedValueMap getTestNamedValues() {
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Parser::NamedValueMap Values;
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Values["nameX"] = llvm::StringRef("x");
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Values["hasParamA"] =
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VariantMatcher::SingleMatcher(hasParameter(0, hasName("a")));
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return Values;
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}
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TEST(ParserTest, FullParserTest) {
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Diagnostics Error;
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llvm::Optional<DynTypedMatcher> VarDecl(Parser::parseMatcherExpression(
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"varDecl(hasInitializer(binaryOperator(hasLHS(integerLiteral()),"
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" hasOperatorName(\"+\"))))",
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&Error));
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EXPECT_EQ("", Error.toStringFull());
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Matcher<Decl> M = VarDecl->unconditionalConvertTo<Decl>();
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EXPECT_TRUE(matches("int x = 1 + false;", M));
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EXPECT_FALSE(matches("int x = true + 1;", M));
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EXPECT_FALSE(matches("int x = 1 - false;", M));
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EXPECT_FALSE(matches("int x = true - 1;", M));
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llvm::Optional<DynTypedMatcher> HasParameter(Parser::parseMatcherExpression(
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"functionDecl(hasParameter(1, hasName(\"x\")))", &Error));
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EXPECT_EQ("", Error.toStringFull());
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M = HasParameter->unconditionalConvertTo<Decl>();
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EXPECT_TRUE(matches("void f(int a, int x);", M));
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EXPECT_FALSE(matches("void f(int x, int a);", M));
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// Test named values.
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auto NamedValues = getTestNamedValues();
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llvm::Optional<DynTypedMatcher> HasParameterWithNamedValues(
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Parser::parseMatcherExpression(
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"functionDecl(hasParamA, hasParameter(1, hasName(nameX)))",
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nullptr, &NamedValues, &Error));
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EXPECT_EQ("", Error.toStringFull());
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M = HasParameterWithNamedValues->unconditionalConvertTo<Decl>();
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EXPECT_TRUE(matches("void f(int a, int x);", M));
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EXPECT_FALSE(matches("void f(int x, int a);", M));
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EXPECT_TRUE(!Parser::parseMatcherExpression(
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"hasInitializer(\n binaryOperator(hasLHS(\"A\")))",
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&Error).hasValue());
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EXPECT_EQ("1:1: Error parsing argument 1 for matcher hasInitializer.\n"
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"2:5: Error parsing argument 1 for matcher binaryOperator.\n"
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"2:20: Error building matcher hasLHS.\n"
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"2:27: Incorrect type for arg 1. "
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"(Expected = Matcher<Expr>) != (Actual = String)",
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Error.toStringFull());
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}
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std::string ParseWithError(StringRef Code) {
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Diagnostics Error;
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VariantValue Value;
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Parser::parseExpression(Code, &Value, &Error);
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return Error.toStringFull();
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}
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std::string ParseMatcherWithError(StringRef Code) {
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Diagnostics Error;
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Parser::parseMatcherExpression(Code, &Error);
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return Error.toStringFull();
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}
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TEST(ParserTest, Errors) {
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EXPECT_EQ(
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"1:5: Error parsing matcher. Found token <123> while looking for '('.",
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ParseWithError("Foo 123"));
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EXPECT_EQ(
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"1:1: Matcher not found: Foo\n"
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"1:9: Error parsing matcher. Found token <123> while looking for ','.",
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ParseWithError("Foo(\"A\" 123)"));
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EXPECT_EQ(
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"1:1: Error parsing argument 1 for matcher stmt.\n"
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"1:6: Value not found: someValue",
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ParseWithError("stmt(someValue)"));
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EXPECT_EQ(
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"1:1: Matcher not found: Foo\n"
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"1:4: Error parsing matcher. Found end-of-code while looking for ')'.",
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ParseWithError("Foo("));
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EXPECT_EQ("1:1: End of code found while looking for token.",
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ParseWithError(""));
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EXPECT_EQ("Input value is not a matcher expression.",
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ParseMatcherWithError("\"A\""));
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EXPECT_EQ("1:1: Matcher not found: Foo\n"
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"1:1: Error parsing argument 1 for matcher Foo.\n"
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"1:5: Invalid token <(> found when looking for a value.",
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ParseWithError("Foo(("));
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EXPECT_EQ("1:7: Expected end of code.", ParseWithError("expr()a"));
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EXPECT_EQ("1:11: Malformed bind() expression.",
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ParseWithError("isArrow().biind"));
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EXPECT_EQ("1:15: Malformed bind() expression.",
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ParseWithError("isArrow().bind"));
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EXPECT_EQ("1:16: Malformed bind() expression.",
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ParseWithError("isArrow().bind(foo"));
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EXPECT_EQ("1:21: Malformed bind() expression.",
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ParseWithError("isArrow().bind(\"foo\""));
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EXPECT_EQ("1:1: Error building matcher isArrow.\n"
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"1:1: Matcher does not support binding.",
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ParseWithError("isArrow().bind(\"foo\")"));
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EXPECT_EQ("Input value has unresolved overloaded type: "
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"Matcher<DoStmt|ForStmt|WhileStmt|CXXForRangeStmt|FunctionDecl>",
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ParseMatcherWithError("hasBody(stmt())"));
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}
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TEST(ParserTest, OverloadErrors) {
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EXPECT_EQ("1:1: Error building matcher callee.\n"
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"1:8: Candidate 1: Incorrect type for arg 1. "
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"(Expected = Matcher<Stmt>) != (Actual = String)\n"
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"1:8: Candidate 2: Incorrect type for arg 1. "
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"(Expected = Matcher<Decl>) != (Actual = String)",
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ParseWithError("callee(\"A\")"));
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}
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TEST(ParserTest, CompletionRegistry) {
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std::vector<MatcherCompletion> Comps =
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Parser::completeExpression("while", 5);
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ASSERT_EQ(1u, Comps.size());
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EXPECT_EQ("Stmt(", Comps[0].TypedText);
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EXPECT_EQ("Matcher<Stmt> whileStmt(Matcher<WhileStmt>...)",
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Comps[0].MatcherDecl);
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Comps = Parser::completeExpression("whileStmt().", 12);
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ASSERT_EQ(1u, Comps.size());
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EXPECT_EQ("bind(\"", Comps[0].TypedText);
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EXPECT_EQ("bind", Comps[0].MatcherDecl);
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}
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TEST(ParserTest, CompletionNamedValues) {
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// Can complete non-matcher types.
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auto NamedValues = getTestNamedValues();
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StringRef Code = "functionDecl(hasName(";
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std::vector<MatcherCompletion> Comps =
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Parser::completeExpression(Code, Code.size(), nullptr, &NamedValues);
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ASSERT_EQ(1u, Comps.size());
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EXPECT_EQ("nameX", Comps[0].TypedText);
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EXPECT_EQ("String nameX", Comps[0].MatcherDecl);
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// Can complete if there are names in the expression.
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Code = "cxxMethodDecl(hasName(nameX), ";
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Comps = Parser::completeExpression(Code, Code.size(), nullptr, &NamedValues);
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EXPECT_LT(0u, Comps.size());
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// Can complete names and registry together.
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Code = "cxxMethodDecl(hasP";
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Comps = Parser::completeExpression(Code, Code.size(), nullptr, &NamedValues);
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ASSERT_EQ(3u, Comps.size());
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EXPECT_EQ("aramA", Comps[0].TypedText);
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EXPECT_EQ("Matcher<FunctionDecl> hasParamA", Comps[0].MatcherDecl);
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EXPECT_EQ("arameter(", Comps[1].TypedText);
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EXPECT_EQ(
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"Matcher<FunctionDecl> hasParameter(unsigned, Matcher<ParmVarDecl>)",
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Comps[1].MatcherDecl);
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EXPECT_EQ("arent(", Comps[2].TypedText);
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EXPECT_EQ(
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"Matcher<Decl> "
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"hasParent(Matcher<NestedNameSpecifierLoc|TypeLoc|Decl|...>)",
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Comps[2].MatcherDecl);
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}
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} // end anonymous namespace
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} // end namespace dynamic
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} // end namespace ast_matchers
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} // end namespace clang
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