189 lines
7.6 KiB
C++
189 lines
7.6 KiB
C++
//===- unittest/Tooling/FixitTest.cpp ------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Tooling/FixIt.h"
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#include "clang/ASTMatchers/ASTMatchFinder.h"
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#include "clang/ASTMatchers/ASTMatchers.h"
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#include "clang/Testing/TestAST.h"
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#include "gtest/gtest.h"
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using namespace clang;
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using tooling::fixit::getText;
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using tooling::fixit::createRemoval;
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using tooling::fixit::createReplacement;
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namespace {
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const CallExpr &onlyCall(ASTContext &Ctx) {
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using namespace ast_matchers;
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auto Calls = match(callExpr().bind(""), Ctx);
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EXPECT_EQ(Calls.size(), 1u);
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return *Calls.front().getNodeAs<CallExpr>("");
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}
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TEST(FixItTest, getText) {
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TestAST AST("void foo(int x, int y) { foo(x, y); }");
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const CallExpr &CE = onlyCall(AST.context());
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EXPECT_EQ("foo(x, y)", getText(CE, AST.context()));
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EXPECT_EQ("foo(x, y)", getText(CE.getSourceRange(), AST.context()));
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EXPECT_EQ("x", getText(*CE.getArg(0), AST.context()));
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EXPECT_EQ("y", getText(*CE.getArg(1), AST.context()));
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AST = TestAST("#define APPLY(f, x, y) f(x, y)\n"
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"void foo(int x, int y) { APPLY(foo, x, y); }");
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const CallExpr &CE2 = onlyCall(AST.context());
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EXPECT_EQ("APPLY(foo, x, y)", getText(CE2, AST.context()));
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}
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TEST(FixItTest, getTextWithMacro) {
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TestAST AST("#define F foo(\n"
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"#define OO x, y)\n"
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"void foo(int x, int y) { F OO ; }");
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const CallExpr &CE = onlyCall(AST.context());
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EXPECT_EQ("F OO", getText(CE, AST.context()));
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EXPECT_EQ("", getText(*CE.getArg(0), AST.context()));
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EXPECT_EQ("", getText(*CE.getArg(1), AST.context()));
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AST = TestAST("#define FOO(x, y) (void)x; (void)y; foo(x, y);\n"
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"void foo(int x, int y) { FOO(x,y) }");
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const CallExpr &CE2 = onlyCall(AST.context());
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EXPECT_EQ("", getText(CE2, AST.context()));
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EXPECT_EQ("x", getText(*CE2.getArg(0), AST.context()));
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EXPECT_EQ("y", getText(*CE2.getArg(1), AST.context()));
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}
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TEST(FixItTest, createRemoval) {
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TestAST AST("void foo(int x, int y) { foo(x, y); }");
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const CallExpr &CE = onlyCall(AST.context());
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FixItHint Hint = createRemoval(CE);
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EXPECT_EQ("foo(x, y)", getText(Hint.RemoveRange.getAsRange(), AST.context()));
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EXPECT_TRUE(Hint.InsertFromRange.isInvalid());
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EXPECT_TRUE(Hint.CodeToInsert.empty());
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FixItHint Hint0 = createRemoval(*CE.getArg(0));
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EXPECT_EQ("x", getText(Hint0.RemoveRange.getAsRange(), AST.context()));
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EXPECT_TRUE(Hint0.InsertFromRange.isInvalid());
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EXPECT_TRUE(Hint0.CodeToInsert.empty());
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FixItHint Hint1 = createRemoval(*CE.getArg(1));
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EXPECT_EQ("y", getText(Hint1.RemoveRange.getAsRange(), AST.context()));
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EXPECT_TRUE(Hint1.InsertFromRange.isInvalid());
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EXPECT_TRUE(Hint1.CodeToInsert.empty());
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AST = TestAST("void foo(int x, int y) { foo(x + y, y + x); }");
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const CallExpr &CE2 = onlyCall(AST.context());
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Hint0 = createRemoval(*CE2.getArg(0));
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EXPECT_EQ("x + y", getText(Hint0.RemoveRange.getAsRange(), AST.context()));
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Hint1 = createRemoval(*CE2.getArg(1));
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EXPECT_EQ("y + x", getText(Hint1.RemoveRange.getAsRange(), AST.context()));
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}
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TEST(FixItTest, createRemovalWithMacro) {
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TestAST AST("#define FOO foo(1, 1)\n"
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"void foo(int x, int y) { FOO; }");
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const CallExpr &CE = onlyCall(AST.context());
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FixItHint Hint = createRemoval(CE);
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EXPECT_EQ("FOO", getText(Hint.RemoveRange.getAsRange(), AST.context()));
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EXPECT_TRUE(Hint.InsertFromRange.isInvalid());
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EXPECT_TRUE(Hint.CodeToInsert.empty());
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FixItHint Hint0 = createRemoval(*CE.getArg(0));
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EXPECT_EQ("input.mm:2:26 <Spelling=input.mm:1:17>",
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Hint0.RemoveRange.getBegin().printToString(AST.sourceManager()));
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EXPECT_EQ("input.mm:2:26 <Spelling=input.mm:1:17>",
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Hint0.RemoveRange.getEnd().printToString(AST.sourceManager()));
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EXPECT_TRUE(Hint0.InsertFromRange.isInvalid());
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EXPECT_TRUE(Hint0.CodeToInsert.empty());
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FixItHint Hint1 = createRemoval(*CE.getArg(1));
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EXPECT_EQ("input.mm:2:26 <Spelling=input.mm:1:20>",
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Hint1.RemoveRange.getBegin().printToString(AST.sourceManager()));
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EXPECT_EQ("input.mm:2:26 <Spelling=input.mm:1:20>",
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Hint1.RemoveRange.getEnd().printToString(AST.sourceManager()));
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EXPECT_TRUE(Hint1.InsertFromRange.isInvalid());
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EXPECT_TRUE(Hint1.CodeToInsert.empty());
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AST = TestAST("#define FOO(x, y) (void)x; (void)y; foo(x, y);\n"
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"void foo(int x, int y) { FOO(x,y) }");
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const CallExpr &CE2 = onlyCall(AST.context());
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Hint = createRemoval(CE2);
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EXPECT_EQ("input.mm:2:26 <Spelling=input.mm:1:37>",
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Hint.RemoveRange.getBegin().printToString(AST.sourceManager()));
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EXPECT_EQ("input.mm:2:26 <Spelling=input.mm:1:45>",
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Hint.RemoveRange.getEnd().printToString(AST.sourceManager()));
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EXPECT_TRUE(Hint.InsertFromRange.isInvalid());
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EXPECT_TRUE(Hint.CodeToInsert.empty());
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}
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TEST(FixItTest, createReplacement) {
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for (const char *Code : {
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"void foo(int x, int y) { foo(x, y); }",
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"#define APPLY(f, x, y) f(x, y)\n"
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"void foo(int x, int y) { APPLY(foo, x, y); }",
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"#define APPLY(f, P) f(P)\n"
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"#define PAIR(x, y) x, y\n"
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"void foo(int x, int y) { APPLY(foo, PAIR(x, y)); }\n",
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}) {
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TestAST AST(Code);
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const CallExpr &CE = onlyCall(AST.context());
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const Expr *P0 = CE.getArg(0);
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const Expr *P1 = CE.getArg(1);
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FixItHint Hint0 = createReplacement(*P0, *P1, AST.context());
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FixItHint Hint1 = createReplacement(*P1, *P0, AST.context());
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// Validate Hint0 fields.
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EXPECT_EQ("x", getText(Hint0.RemoveRange.getAsRange(), AST.context()));
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EXPECT_TRUE(Hint0.InsertFromRange.isInvalid());
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EXPECT_EQ(Hint0.CodeToInsert, "y");
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// Validate Hint1 fields.
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EXPECT_EQ("y", getText(Hint1.RemoveRange.getAsRange(), AST.context()));
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EXPECT_TRUE(Hint1.InsertFromRange.isInvalid());
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EXPECT_EQ(Hint1.CodeToInsert, "x");
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}
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}
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TEST(FixItTest, createReplacementWithMacro) {
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TestAST AST("#define FOO foo(1, 1)\n"
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"void foo(int x, int y) { FOO; }");
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const CallExpr &CE = onlyCall(AST.context());
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FixItHint Hint =
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createReplacement(*CE.getArg(0), *CE.getArg(1), AST.context());
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EXPECT_EQ("input.mm:2:26 <Spelling=input.mm:1:17>",
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Hint.RemoveRange.getBegin().printToString(AST.sourceManager()));
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EXPECT_EQ("input.mm:2:26 <Spelling=input.mm:1:17>",
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Hint.RemoveRange.getEnd().printToString(AST.sourceManager()));
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EXPECT_TRUE(Hint.InsertFromRange.isInvalid());
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EXPECT_TRUE(Hint.CodeToInsert.empty());
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AST = TestAST("#define FOO(x, y) (void)x; (void)y; foo(x, y);\n"
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"void foo(int x, int y) { FOO(x,y) }");
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const CallExpr &CE2 = onlyCall(AST.context());
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Hint = createReplacement(*CE2.getArg(0), *CE2.getArg(1), AST.context());
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EXPECT_EQ("input.mm:2:26 <Spelling=input.mm:2:30>",
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Hint.RemoveRange.getEnd().printToString(AST.sourceManager()));
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EXPECT_EQ("input.mm:2:26 <Spelling=input.mm:2:30>",
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Hint.RemoveRange.getBegin().printToString(AST.sourceManager()));
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EXPECT_TRUE(Hint.InsertFromRange.isInvalid());
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EXPECT_EQ("y", Hint.CodeToInsert);
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AST = TestAST("void foo(int x, int y) { foo(x + y, y + x); }");
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const CallExpr &CE3 = onlyCall(AST.context());
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Hint = createReplacement(*CE3.getArg(0), *CE3.getArg(1), AST.context());
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EXPECT_EQ("x + y", getText(Hint.RemoveRange.getAsRange(), AST.context()));
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EXPECT_TRUE(Hint.InsertFromRange.isInvalid());
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EXPECT_EQ("y + x", Hint.CodeToInsert);
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}
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} // end anonymous namespace
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