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//===- unittest/Tooling/SourceCodeTest.cpp --------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "clang/Tooling/Refactoring/SourceCode.h"
#include "TestVisitor.h"
#include "clang/Basic/Diagnostic.h"
#include "llvm/Testing/Support/Annotations.h"
#include "llvm/Testing/Support/SupportHelpers.h"
#include <gmock/gmock.h>
#include <gtest/gtest.h>
using namespace clang;
using llvm::ValueIs;
using tooling::getExtendedText;
using tooling::getRangeForEdit;
using tooling::getText;
namespace {
struct IntLitVisitor : TestVisitor<IntLitVisitor> {
bool VisitIntegerLiteral(IntegerLiteral *Expr) {
OnIntLit(Expr, Context);
return true;
}
std::function<void(IntegerLiteral *, ASTContext *Context)> OnIntLit;
};
struct CallsVisitor : TestVisitor<CallsVisitor> {
bool VisitCallExpr(CallExpr *Expr) {
OnCall(Expr, Context);
return true;
}
std::function<void(CallExpr *, ASTContext *Context)> OnCall;
};
// Equality matcher for `clang::CharSourceRange`, which lacks `operator==`.
MATCHER_P(EqualsRange, R, "") {
return arg.isTokenRange() == R.isTokenRange() &&
arg.getBegin() == R.getBegin() && arg.getEnd() == R.getEnd();
}
static ::testing::Matcher<CharSourceRange> AsRange(const SourceManager &SM,
llvm::Annotations::Range R) {
return EqualsRange(CharSourceRange::getCharRange(
SM.getLocForStartOfFile(SM.getMainFileID()).getLocWithOffset(R.Begin),
SM.getLocForStartOfFile(SM.getMainFileID()).getLocWithOffset(R.End)));
}
TEST(SourceCodeTest, getText) {
CallsVisitor Visitor;
Visitor.OnCall = [](CallExpr *CE, ASTContext *Context) {
EXPECT_EQ("foo(x, y)", getText(*CE, *Context));
};
Visitor.runOver("void foo(int x, int y) { foo(x, y); }");
Visitor.OnCall = [](CallExpr *CE, ASTContext *Context) {
EXPECT_EQ("APPLY(foo, x, y)", getText(*CE, *Context));
};
Visitor.runOver("#define APPLY(f, x, y) f(x, y)\n"
"void foo(int x, int y) { APPLY(foo, x, y); }");
}
TEST(SourceCodeTest, getTextWithMacro) {
CallsVisitor Visitor;
Visitor.OnCall = [](CallExpr *CE, ASTContext *Context) {
EXPECT_EQ("F OO", getText(*CE, *Context));
Expr *P0 = CE->getArg(0);
Expr *P1 = CE->getArg(1);
EXPECT_EQ("", getText(*P0, *Context));
EXPECT_EQ("", getText(*P1, *Context));
};
Visitor.runOver("#define F foo(\n"
"#define OO x, y)\n"
"void foo(int x, int y) { F OO ; }");
Visitor.OnCall = [](CallExpr *CE, ASTContext *Context) {
EXPECT_EQ("", getText(*CE, *Context));
Expr *P0 = CE->getArg(0);
Expr *P1 = CE->getArg(1);
EXPECT_EQ("x", getText(*P0, *Context));
EXPECT_EQ("y", getText(*P1, *Context));
};
Visitor.runOver("#define FOO(x, y) (void)x; (void)y; foo(x, y);\n"
"void foo(int x, int y) { FOO(x,y) }");
}
TEST(SourceCodeTest, getExtendedText) {
CallsVisitor Visitor;
Visitor.OnCall = [](CallExpr *CE, ASTContext *Context) {
EXPECT_EQ("foo(x, y);",
getExtendedText(*CE, tok::TokenKind::semi, *Context));
Expr *P0 = CE->getArg(0);
Expr *P1 = CE->getArg(1);
EXPECT_EQ("x", getExtendedText(*P0, tok::TokenKind::semi, *Context));
EXPECT_EQ("x,", getExtendedText(*P0, tok::TokenKind::comma, *Context));
EXPECT_EQ("y", getExtendedText(*P1, tok::TokenKind::semi, *Context));
};
Visitor.runOver("void foo(int x, int y) { foo(x, y); }");
Visitor.runOver("void foo(int x, int y) { if (true) foo(x, y); }");
Visitor.runOver("int foo(int x, int y) { if (true) return 3 + foo(x, y); }");
Visitor.runOver("void foo(int x, int y) { for (foo(x, y);;) ++x; }");
Visitor.runOver(
"bool foo(int x, int y) { for (;foo(x, y);) x = 1; return true; }");
Visitor.OnCall = [](CallExpr *CE, ASTContext *Context) {
EXPECT_EQ("foo()", getExtendedText(*CE, tok::TokenKind::semi, *Context));
};
Visitor.runOver("bool foo() { if (foo()) return true; return false; }");
Visitor.runOver("void foo() { int x; for (;; foo()) ++x; }");
Visitor.runOver("int foo() { return foo() + 3; }");
}
TEST(SourceCodeTest, EditRangeWithMacroExpansionsShouldSucceed) {
// The call expression, whose range we are extracting, includes two macro
// expansions.
llvm::Annotations Code(R"cpp(
#define M(a) a * 13
int foo(int x, int y);
int a = $r[[foo(M(1), M(2))]];
)cpp");
CallsVisitor Visitor;
Visitor.OnCall = [&Code](CallExpr *CE, ASTContext *Context) {
auto Range = CharSourceRange::getTokenRange(CE->getSourceRange());
EXPECT_THAT(getRangeForEdit(Range, *Context),
ValueIs(AsRange(Context->getSourceManager(), Code.range("r"))));
};
Visitor.runOver(Code.code());
}
TEST(SourceCodeTest, EditWholeMacroExpansionShouldSucceed) {
llvm::Annotations Code(R"cpp(
#define FOO 10
int a = $r[[FOO]];
)cpp");
IntLitVisitor Visitor;
Visitor.OnIntLit = [&Code](IntegerLiteral *Expr, ASTContext *Context) {
auto Range = CharSourceRange::getTokenRange(Expr->getSourceRange());
EXPECT_THAT(getRangeForEdit(Range, *Context),
ValueIs(AsRange(Context->getSourceManager(), Code.range("r"))));
};
Visitor.runOver(Code.code());
}
TEST(SourceCodeTest, EditPartialMacroExpansionShouldFail) {
std::string Code = R"cpp(
#define BAR 10+
int c = BAR 3.0;
)cpp";
IntLitVisitor Visitor;
Visitor.OnIntLit = [](IntegerLiteral *Expr, ASTContext *Context) {
auto Range = CharSourceRange::getTokenRange(Expr->getSourceRange());
EXPECT_FALSE(getRangeForEdit(Range, *Context).hasValue());
};
Visitor.runOver(Code);
}
TEST(SourceCodeTest, EditWholeMacroArgShouldSucceed) {
llvm::Annotations Code(R"cpp(
#define FOO(a) a + 7.0;
int a = FOO($r[[10]]);
)cpp");
IntLitVisitor Visitor;
Visitor.OnIntLit = [&Code](IntegerLiteral *Expr, ASTContext *Context) {
auto Range = CharSourceRange::getTokenRange(Expr->getSourceRange());
EXPECT_THAT(getRangeForEdit(Range, *Context),
ValueIs(AsRange(Context->getSourceManager(), Code.range("r"))));
};
Visitor.runOver(Code.code());
}
TEST(SourceCodeTest, EditPartialMacroArgShouldSucceed) {
llvm::Annotations Code(R"cpp(
#define FOO(a) a + 7.0;
int a = FOO($r[[10]] + 10.0);
)cpp");
IntLitVisitor Visitor;
Visitor.OnIntLit = [&Code](IntegerLiteral *Expr, ASTContext *Context) {
auto Range = CharSourceRange::getTokenRange(Expr->getSourceRange());
EXPECT_THAT(getRangeForEdit(Range, *Context),
ValueIs(AsRange(Context->getSourceManager(), Code.range("r"))));
};
Visitor.runOver(Code.code());
}
} // end anonymous namespace
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