1 //===-- lib/Evaluate/common.cpp -------------------------------------------===//
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/Evaluate/common.h"
10 #include "flang/Common/idioms.h"
11
12 using namespace Fortran::parser::literals;
13
14 namespace Fortran::evaluate {
15
RealFlagWarnings(FoldingContext & context,const RealFlags & flags,const char * operation)16 void RealFlagWarnings(
17 FoldingContext &context, const RealFlags &flags, const char *operation) {
18 if (flags.test(RealFlag::Overflow)) {
19 context.messages().Say("overflow on %s"_en_US, operation);
20 }
21 if (flags.test(RealFlag::DivideByZero)) {
22 if (std::strcmp(operation, "division") == 0) {
23 context.messages().Say("division by zero"_en_US);
24 } else {
25 context.messages().Say("division on %s"_en_US);
26 }
27 }
28 if (flags.test(RealFlag::InvalidArgument)) {
29 context.messages().Say("invalid argument on %s"_en_US, operation);
30 }
31 if (flags.test(RealFlag::Underflow)) {
32 context.messages().Say("underflow on %s"_en_US, operation);
33 }
34 }
35
StartImpliedDo(parser::CharBlock name,ConstantSubscript n)36 ConstantSubscript &FoldingContext::StartImpliedDo(
37 parser::CharBlock name, ConstantSubscript n) {
38 auto pair{impliedDos_.insert(std::make_pair(name, n))};
39 CHECK(pair.second);
40 return pair.first->second;
41 }
42
GetImpliedDo(parser::CharBlock name) const43 std::optional<ConstantSubscript> FoldingContext::GetImpliedDo(
44 parser::CharBlock name) const {
45 if (auto iter{impliedDos_.find(name)}; iter != impliedDos_.cend()) {
46 return {iter->second};
47 } else {
48 return std::nullopt;
49 }
50 }
51
EndImpliedDo(parser::CharBlock name)52 void FoldingContext::EndImpliedDo(parser::CharBlock name) {
53 auto iter{impliedDos_.find(name)};
54 if (iter != impliedDos_.end()) {
55 impliedDos_.erase(iter);
56 }
57 }
58 } // namespace Fortran::evaluate
59