1 //===- CharacterTest.cpp -- CharacterExprHelper unit tests ----------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "flang/Optimizer/Builder/Character.h"
10 #include "gtest/gtest.h"
11 #include "flang/Optimizer/Builder/BoxValue.h"
12 #include "flang/Optimizer/Builder/FIRBuilder.h"
13 #include "flang/Optimizer/Support/InitFIR.h"
14 #include "flang/Optimizer/Support/KindMapping.h"
15 
16 struct CharacterTest : public testing::Test {
17 public:
18   void SetUp() override {
19     fir::support::loadDialects(context);
20 
21     kindMap = std::make_unique<fir::KindMapping>(&context,
22         "i10:80,l3:24,a1:8,r54:Double,c20:X86_FP80,r11:PPC_FP128,"
23         "r12:FP128,r13:X86_FP80,r14:Double,r15:Float,r16:Half,r23:BFloat");
24     mlir::OpBuilder builder(&context);
25     auto loc = builder.getUnknownLoc();
26 
27     // Set up a Module with a dummy function operation inside.
28     // Set the insertion point in the function entry block.
29     mlir::ModuleOp mod = builder.create<mlir::ModuleOp>(loc);
30     mlir::func::FuncOp func = mlir::func::FuncOp::create(
31         loc, "func1", builder.getFunctionType(llvm::None, llvm::None));
32     auto *entryBlock = func.addEntryBlock();
33     mod.push_back(mod);
34     builder.setInsertionPointToStart(entryBlock);
35 
36     firBuilder = std::make_unique<fir::FirOpBuilder>(mod, *kindMap);
37   }
38 
39   fir::FirOpBuilder &getBuilder() { return *firBuilder; }
40 
41   mlir::MLIRContext context;
42   std::unique_ptr<fir::KindMapping> kindMap;
43   std::unique_ptr<fir::FirOpBuilder> firBuilder;
44 };
45 
46 TEST_F(CharacterTest, smallUtilityFunctions) {
47   auto builder = getBuilder();
48   auto loc = builder.getUnknownLoc();
49   llvm::StringRef strValue("onestringliteral");
50   auto strLit = fir::factory::createStringLiteral(builder, loc, strValue);
51   EXPECT_TRUE(
52       fir::factory::CharacterExprHelper::hasConstantLengthInType(strLit));
53   auto ty = strLit.getCharBox()->getAddr().getType();
54   EXPECT_TRUE(fir::factory::CharacterExprHelper::isCharacterScalar(ty));
55   EXPECT_EQ(fir::factory::CharacterExprHelper::getCharacterOrSequenceKind(ty),
56       fir::factory::CharacterExprHelper::getCharacterKind(ty));
57 }
58 
59 TEST_F(CharacterTest, createSubstring) {
60   auto builder = getBuilder();
61   auto loc = builder.getUnknownLoc();
62   auto charHelper = fir::factory::CharacterExprHelper(builder, loc);
63   llvm::StringRef data("a dummy string to test substring");
64   auto str = fir::factory::createStringLiteral(builder, loc, data);
65   auto lb = builder.createIntegerConstant(loc, builder.getI64Type(), 18);
66   auto ub = builder.createIntegerConstant(loc, builder.getI64Type(), 22);
67   auto substr = charHelper.createSubstring(*str.getCharBox(), {lb, ub});
68   EXPECT_FALSE(
69       fir::factory::CharacterExprHelper::hasConstantLengthInType(substr));
70   EXPECT_FALSE(charHelper.getCharacterType(substr).hasConstantLen());
71   EXPECT_FALSE(fir::factory::CharacterExprHelper::isArray(
72       charHelper.getCharacterType(substr)));
73 }
74