1 files changed, 238 insertions, 0 deletions
diff --git a/unittests/ASTMatchers/Dynamic/ParserTest.cpp b/unittests/ASTMatchers/Dynamic/ParserTest.cpp
new file mode 100644
index 0000000..f19ec51
--- /dev/null
+++ b/unittests/ASTMatchers/Dynamic/ParserTest.cpp
@@ -0,0 +1,238 @@
+//===- unittest/ASTMatchers/Dynamic/ParserTest.cpp - Parser unit tests -===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===-------------------------------------------------------------------===//
+
+#include <string>
+#include <vector>
+
+#include "../ASTMatchersTest.h"
+#include "clang/ASTMatchers/Dynamic/Parser.h"
+#include "clang/ASTMatchers/Dynamic/Registry.h"
+#include "gtest/gtest.h"
+#include "llvm/ADT/StringMap.h"
+
+namespace clang {
+namespace ast_matchers {
+namespace dynamic {
+namespace {
+
+class MockSema : public Parser::Sema {
+public:
+  virtual ~MockSema() {}
+
+  uint64_t expectMatcher(StringRef MatcherName) {
+    ast_matchers::internal::Matcher<Stmt> M = stmt();
+    ExpectedMatchers.insert(std::make_pair(MatcherName, M));
+    return M.getID();
+  }
+
+  void parse(StringRef Code) {
+    Diagnostics Error;
+    VariantValue Value;
+    Parser::parseExpression(Code, this, &Value, &Error);
+    Values.push_back(Value);
+    Errors.push_back(Error.toStringFull());
+  }
+
+  VariantMatcher actOnMatcherExpression(StringRef MatcherName,
+                                        const SourceRange &NameRange,
+                                        StringRef BindID,
+                                        ArrayRef<ParserValue> Args,
+                                        Diagnostics *Error) {
+    MatcherInfo ToStore = { MatcherName, NameRange, Args, BindID };
+    Matchers.push_back(ToStore);
+    return VariantMatcher::SingleMatcher(
+        ExpectedMatchers.find(MatcherName)->second);
+  }
+
+  struct MatcherInfo {
+    StringRef MatcherName;
+    SourceRange NameRange;
+    std::vector<ParserValue> Args;
+    std::string BoundID;
+  };
+
+  std::vector<std::string> Errors;
+  std::vector<VariantValue> Values;
+  std::vector<MatcherInfo> Matchers;
+  std::map<std::string, ast_matchers::internal::Matcher<Stmt> >
+  ExpectedMatchers;
+};
+
+TEST(ParserTest, ParseUnsigned) {
+  MockSema Sema;
+  Sema.parse("0");
+  Sema.parse("123");
+  Sema.parse("0x1f");
+  Sema.parse("12345678901");
+  Sema.parse("1a1");
+  EXPECT_EQ(5U, Sema.Values.size());
+  EXPECT_EQ(0U, Sema.Values[0].getUnsigned());
+  EXPECT_EQ(123U, Sema.Values[1].getUnsigned());
+  EXPECT_EQ(31U, Sema.Values[2].getUnsigned());
+  EXPECT_EQ("1:1: Error parsing unsigned token: <12345678901>", Sema.Errors[3]);
+  EXPECT_EQ("1:1: Error parsing unsigned token: <1a1>", Sema.Errors[4]);
+}
+
+TEST(ParserTest, ParseString) {
+  MockSema Sema;
+  Sema.parse("\"Foo\"");
+  Sema.parse("\"\"");
+  Sema.parse("\"Baz");
+  EXPECT_EQ(3ULL, Sema.Values.size());
+  EXPECT_EQ("Foo", Sema.Values[0].getString());
+  EXPECT_EQ("", Sema.Values[1].getString());
+  EXPECT_EQ("1:1: Error parsing string token: <\"Baz>", Sema.Errors[2]);
+}
+
+bool matchesRange(const SourceRange &Range, unsigned StartLine,
+                  unsigned EndLine, unsigned StartColumn, unsigned EndColumn) {
+  EXPECT_EQ(StartLine, Range.Start.Line);
+  EXPECT_EQ(EndLine, Range.End.Line);
+  EXPECT_EQ(StartColumn, Range.Start.Column);
+  EXPECT_EQ(EndColumn, Range.End.Column);
+  return Range.Start.Line == StartLine && Range.End.Line == EndLine &&
+         Range.Start.Column == StartColumn && Range.End.Column == EndColumn;
+}
+
+llvm::Optional<DynTypedMatcher> getSingleMatcher(const VariantValue &Value) {
+  llvm::Optional<DynTypedMatcher> Result =
+      Value.getMatcher().getSingleMatcher();
+  EXPECT_TRUE(Result.hasValue());
+  return Result;
+}
+
+TEST(ParserTest, ParseMatcher) {
+  MockSema Sema;
+  const uint64_t ExpectedFoo = Sema.expectMatcher("Foo");
+  const uint64_t ExpectedBar = Sema.expectMatcher("Bar");
+  const uint64_t ExpectedBaz = Sema.expectMatcher("Baz");
+  Sema.parse(" Foo ( Bar ( 17), Baz( \n \"B A,Z\") ) .bind( \"Yo!\") ");
+  for (size_t i = 0, e = Sema.Errors.size(); i != e; ++i) {
+    EXPECT_EQ("", Sema.Errors[i]);
+  }
+
+  EXPECT_EQ(1ULL, Sema.Values.size());
+  EXPECT_EQ(ExpectedFoo, getSingleMatcher(Sema.Values[0])->getID());
+
+  EXPECT_EQ(3ULL, Sema.Matchers.size());
+  const MockSema::MatcherInfo Bar = Sema.Matchers[0];
+  EXPECT_EQ("Bar", Bar.MatcherName);
+  EXPECT_TRUE(matchesRange(Bar.NameRange, 1, 1, 8, 17));
+  EXPECT_EQ(1ULL, Bar.Args.size());
+  EXPECT_EQ(17U, Bar.Args[0].Value.getUnsigned());
+
+  const MockSema::MatcherInfo Baz = Sema.Matchers[1];
+  EXPECT_EQ("Baz", Baz.MatcherName);
+  EXPECT_TRUE(matchesRange(Baz.NameRange, 1, 2, 19, 10));
+  EXPECT_EQ(1ULL, Baz.Args.size());
+  EXPECT_EQ("B A,Z", Baz.Args[0].Value.getString());
+
+  const MockSema::MatcherInfo Foo = Sema.Matchers[2];
+  EXPECT_EQ("Foo", Foo.MatcherName);
+  EXPECT_TRUE(matchesRange(Foo.NameRange, 1, 2, 2, 12));
+  EXPECT_EQ(2ULL, Foo.Args.size());
+  EXPECT_EQ(ExpectedBar, getSingleMatcher(Foo.Args[0].Value)->getID());
+  EXPECT_EQ(ExpectedBaz, getSingleMatcher(Foo.Args[1].Value)->getID());
+  EXPECT_EQ("Yo!", Foo.BoundID);
+}
+
+using ast_matchers::internal::Matcher;
+
+TEST(ParserTest, FullParserTest) {
+  Diagnostics Error;
+  llvm::Optional<DynTypedMatcher> VarDecl(Parser::parseMatcherExpression(
+      "varDecl(hasInitializer(binaryOperator(hasLHS(integerLiteral()),"
+      "                                      hasOperatorName(\"+\"))))",
+      &Error));
+  EXPECT_EQ("", Error.toStringFull());
+  Matcher<Decl> M = VarDecl->unconditionalConvertTo<Decl>();
+  EXPECT_TRUE(matches("int x = 1 + false;", M));
+  EXPECT_FALSE(matches("int x = true + 1;", M));
+  EXPECT_FALSE(matches("int x = 1 - false;", M));
+  EXPECT_FALSE(matches("int x = true - 1;", M));
+
+  llvm::Optional<DynTypedMatcher> HasParameter(Parser::parseMatcherExpression(
+      "functionDecl(hasParameter(1, hasName(\"x\")))", &Error));
+  EXPECT_EQ("", Error.toStringFull());
+  M = HasParameter->unconditionalConvertTo<Decl>();
+
+  EXPECT_TRUE(matches("void f(int a, int x);", M));
+  EXPECT_FALSE(matches("void f(int x, int a);", M));
+
+  EXPECT_TRUE(!Parser::parseMatcherExpression(
+                   "hasInitializer(\n    binaryOperator(hasLHS(\"A\")))",
+                   &Error).hasValue());
+  EXPECT_EQ("1:1: Error parsing argument 1 for matcher hasInitializer.\n"
+            "2:5: Error parsing argument 1 for matcher binaryOperator.\n"
+            "2:20: Error building matcher hasLHS.\n"
+            "2:27: Incorrect type for arg 1. "
+            "(Expected = Matcher<Expr>) != (Actual = String)",
+            Error.toStringFull());
+}
+
+std::string ParseWithError(StringRef Code) {
+  Diagnostics Error;
+  VariantValue Value;
+  Parser::parseExpression(Code, &Value, &Error);
+  return Error.toStringFull();
+}
+
+std::string ParseMatcherWithError(StringRef Code) {
+  Diagnostics Error;
+  Parser::parseMatcherExpression(Code, &Error);
+  return Error.toStringFull();
+}
+
+TEST(ParserTest, Errors) {
+  EXPECT_EQ(
+      "1:5: Error parsing matcher. Found token <123> while looking for '('.",
+      ParseWithError("Foo 123"));
+  EXPECT_EQ(
+      "1:9: Error parsing matcher. Found token <123> while looking for ','.",
+      ParseWithError("Foo(\"A\" 123)"));
+  EXPECT_EQ(
+      "1:4: Error parsing matcher. Found end-of-code while looking for ')'.",
+      ParseWithError("Foo("));
+  EXPECT_EQ("1:1: End of code found while looking for token.",
+            ParseWithError(""));
+  EXPECT_EQ("Input value is not a matcher expression.",
+            ParseMatcherWithError("\"A\""));
+  EXPECT_EQ("1:1: Error parsing argument 1 for matcher Foo.\n"
+            "1:5: Invalid token <(> found when looking for a value.",
+            ParseWithError("Foo(("));
+  EXPECT_EQ("1:7: Expected end of code.", ParseWithError("expr()a"));
+  EXPECT_EQ("1:11: Malformed bind() expression.",
+            ParseWithError("isArrow().biind"));
+  EXPECT_EQ("1:15: Malformed bind() expression.",
+            ParseWithError("isArrow().bind"));
+  EXPECT_EQ("1:16: Malformed bind() expression.",
+            ParseWithError("isArrow().bind(foo"));
+  EXPECT_EQ("1:21: Malformed bind() expression.",
+            ParseWithError("isArrow().bind(\"foo\""));
+  EXPECT_EQ("1:1: Error building matcher isArrow.\n"
+            "1:1: Matcher does not support binding.",
+            ParseWithError("isArrow().bind(\"foo\")"));
+  EXPECT_EQ("Input value has unresolved overloaded type: "
+            "Matcher<DoStmt|ForStmt|WhileStmt>",
+            ParseMatcherWithError("hasBody(stmt())"));
+}
+
+TEST(ParserTest, OverloadErrors) {
+  EXPECT_EQ("1:1: Error building matcher callee.\n"
+            "1:8: Candidate 1: Incorrect type for arg 1. "
+            "(Expected = Matcher<Stmt>) != (Actual = String)\n"
+            "1:8: Candidate 2: Incorrect type for arg 1. "
+            "(Expected = Matcher<Decl>) != (Actual = String)",
+            ParseWithError("callee(\"A\")"));
+}
+
+}  // end anonymous namespace
+}  // end namespace dynamic
+}  // end namespace ast_matchers
+}  // end namespace clang