forked from OSchip/llvm-project
904 lines
30 KiB
C++
904 lines
30 KiB
C++
//===-- lib/Semantics/check-io.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 "check-io.h"
|
|
#include "flang/Common/format.h"
|
|
#include "flang/Parser/tools.h"
|
|
#include "flang/Semantics/expression.h"
|
|
#include "flang/Semantics/tools.h"
|
|
#include <unordered_map>
|
|
|
|
namespace Fortran::semantics {
|
|
|
|
// TODO: C1234, C1235 -- defined I/O constraints
|
|
|
|
class FormatErrorReporter {
|
|
public:
|
|
FormatErrorReporter(SemanticsContext &context,
|
|
const parser::CharBlock &formatCharBlock, int errorAllowance = 3)
|
|
: context_{context}, formatCharBlock_{formatCharBlock},
|
|
errorAllowance_{errorAllowance} {}
|
|
|
|
bool Say(const common::FormatMessage &);
|
|
|
|
private:
|
|
SemanticsContext &context_;
|
|
const parser::CharBlock &formatCharBlock_;
|
|
int errorAllowance_; // initialized to maximum number of errors to report
|
|
};
|
|
|
|
bool FormatErrorReporter::Say(const common::FormatMessage &msg) {
|
|
if (!msg.isError && !context_.warnOnNonstandardUsage()) {
|
|
return false;
|
|
}
|
|
parser::MessageFormattedText text{
|
|
parser::MessageFixedText(msg.text, strlen(msg.text), msg.isError),
|
|
msg.arg};
|
|
if (formatCharBlock_.size()) {
|
|
// The input format is a folded expression. Error markers span the full
|
|
// original unfolded expression in formatCharBlock_.
|
|
context_.Say(formatCharBlock_, text);
|
|
} else {
|
|
// The input format is a source expression. Error markers have an offset
|
|
// and length relative to the beginning of formatCharBlock_.
|
|
parser::CharBlock messageCharBlock{
|
|
parser::CharBlock(formatCharBlock_.begin() + msg.offset, msg.length)};
|
|
context_.Say(messageCharBlock, text);
|
|
}
|
|
return msg.isError && --errorAllowance_ <= 0;
|
|
}
|
|
|
|
void IoChecker::Enter(
|
|
const parser::Statement<common::Indirection<parser::FormatStmt>> &stmt) {
|
|
if (!stmt.label) {
|
|
context_.Say("Format statement must be labeled"_err_en_US); // C1301
|
|
}
|
|
const char *formatStart{static_cast<const char *>(
|
|
std::memchr(stmt.source.begin(), '(', stmt.source.size()))};
|
|
parser::CharBlock reporterCharBlock{formatStart, static_cast<std::size_t>(0)};
|
|
FormatErrorReporter reporter{context_, reporterCharBlock};
|
|
auto reporterWrapper{[&](const auto &msg) { return reporter.Say(msg); }};
|
|
switch (context_.GetDefaultKind(TypeCategory::Character)) {
|
|
case 1: {
|
|
common::FormatValidator<char> validator{formatStart,
|
|
stmt.source.size() - (formatStart - stmt.source.begin()),
|
|
reporterWrapper};
|
|
validator.Check();
|
|
break;
|
|
}
|
|
case 2: { // TODO: Get this to work.
|
|
common::FormatValidator<char16_t> validator{
|
|
/*???*/ nullptr, /*???*/ 0, reporterWrapper};
|
|
validator.Check();
|
|
break;
|
|
}
|
|
case 4: { // TODO: Get this to work.
|
|
common::FormatValidator<char32_t> validator{
|
|
/*???*/ nullptr, /*???*/ 0, reporterWrapper};
|
|
validator.Check();
|
|
break;
|
|
}
|
|
default:
|
|
CRASH_NO_CASE;
|
|
}
|
|
}
|
|
|
|
void IoChecker::Enter(const parser::ConnectSpec &spec) {
|
|
// ConnectSpec context FileNameExpr
|
|
if (std::get_if<parser::FileNameExpr>(&spec.u)) {
|
|
SetSpecifier(IoSpecKind::File);
|
|
}
|
|
}
|
|
|
|
void IoChecker::Enter(const parser::ConnectSpec::CharExpr &spec) {
|
|
IoSpecKind specKind{};
|
|
using ParseKind = parser::ConnectSpec::CharExpr::Kind;
|
|
switch (std::get<ParseKind>(spec.t)) {
|
|
case ParseKind::Access:
|
|
specKind = IoSpecKind::Access;
|
|
break;
|
|
case ParseKind::Action:
|
|
specKind = IoSpecKind::Action;
|
|
break;
|
|
case ParseKind::Asynchronous:
|
|
specKind = IoSpecKind::Asynchronous;
|
|
break;
|
|
case ParseKind::Blank:
|
|
specKind = IoSpecKind::Blank;
|
|
break;
|
|
case ParseKind::Decimal:
|
|
specKind = IoSpecKind::Decimal;
|
|
break;
|
|
case ParseKind::Delim:
|
|
specKind = IoSpecKind::Delim;
|
|
break;
|
|
case ParseKind::Encoding:
|
|
specKind = IoSpecKind::Encoding;
|
|
break;
|
|
case ParseKind::Form:
|
|
specKind = IoSpecKind::Form;
|
|
break;
|
|
case ParseKind::Pad:
|
|
specKind = IoSpecKind::Pad;
|
|
break;
|
|
case ParseKind::Position:
|
|
specKind = IoSpecKind::Position;
|
|
break;
|
|
case ParseKind::Round:
|
|
specKind = IoSpecKind::Round;
|
|
break;
|
|
case ParseKind::Sign:
|
|
specKind = IoSpecKind::Sign;
|
|
break;
|
|
case ParseKind::Convert:
|
|
specKind = IoSpecKind::Convert;
|
|
break;
|
|
case ParseKind::Dispose:
|
|
specKind = IoSpecKind::Dispose;
|
|
break;
|
|
}
|
|
SetSpecifier(specKind);
|
|
if (const std::optional<std::string> charConst{GetConstExpr<std::string>(
|
|
std::get<parser::ScalarDefaultCharExpr>(spec.t))}) {
|
|
std::string s{parser::ToUpperCaseLetters(*charConst)};
|
|
if (specKind == IoSpecKind::Access) {
|
|
flags_.set(Flag::KnownAccess);
|
|
flags_.set(Flag::AccessDirect, s == "DIRECT");
|
|
flags_.set(Flag::AccessStream, s == "STREAM");
|
|
}
|
|
CheckStringValue(specKind, *charConst, parser::FindSourceLocation(spec));
|
|
}
|
|
}
|
|
|
|
void IoChecker::Enter(const parser::ConnectSpec::Newunit &) {
|
|
SetSpecifier(IoSpecKind::Newunit);
|
|
}
|
|
|
|
void IoChecker::Enter(const parser::ConnectSpec::Recl &spec) {
|
|
SetSpecifier(IoSpecKind::Recl);
|
|
if (const std::optional<std::int64_t> recl{
|
|
GetConstExpr<std::int64_t>(spec)}) {
|
|
if (*recl <= 0) {
|
|
context_.Say(parser::FindSourceLocation(spec),
|
|
"RECL value (%jd) must be positive"_err_en_US,
|
|
*recl); // 12.5.6.15
|
|
}
|
|
}
|
|
}
|
|
|
|
void IoChecker::Enter(const parser::EndLabel &) {
|
|
SetSpecifier(IoSpecKind::End);
|
|
}
|
|
|
|
void IoChecker::Enter(const parser::EorLabel &) {
|
|
SetSpecifier(IoSpecKind::Eor);
|
|
}
|
|
|
|
void IoChecker::Enter(const parser::ErrLabel &) {
|
|
SetSpecifier(IoSpecKind::Err);
|
|
}
|
|
|
|
void IoChecker::Enter(const parser::FileUnitNumber &) {
|
|
SetSpecifier(IoSpecKind::Unit);
|
|
flags_.set(Flag::NumberUnit);
|
|
}
|
|
|
|
void IoChecker::Enter(const parser::Format &spec) {
|
|
SetSpecifier(IoSpecKind::Fmt);
|
|
flags_.set(Flag::FmtOrNml);
|
|
std::visit(
|
|
common::visitors{
|
|
[&](const parser::Label &) { flags_.set(Flag::LabelFmt); },
|
|
[&](const parser::Star &) { flags_.set(Flag::StarFmt); },
|
|
[&](const parser::Expr &format) {
|
|
const SomeExpr *expr{GetExpr(format)};
|
|
if (!expr) {
|
|
return;
|
|
}
|
|
auto type{expr->GetType()};
|
|
if (!type ||
|
|
(type->category() != TypeCategory::Integer &&
|
|
type->category() != TypeCategory::Character) ||
|
|
type->kind() !=
|
|
context_.defaultKinds().GetDefaultKind(type->category())) {
|
|
context_.Say(format.source,
|
|
"Format expression must be default character or integer"_err_en_US);
|
|
return;
|
|
}
|
|
if (type->category() == TypeCategory::Integer) {
|
|
flags_.set(Flag::AssignFmt);
|
|
if (expr->Rank() != 0 || !IsVariable(*expr)) {
|
|
context_.Say(format.source,
|
|
"Assigned format label must be a scalar variable"_err_en_US);
|
|
}
|
|
return;
|
|
}
|
|
flags_.set(Flag::CharFmt);
|
|
const std::optional<std::string> constantFormat{
|
|
GetConstExpr<std::string>(format)};
|
|
if (!constantFormat) {
|
|
return;
|
|
}
|
|
// validate constant format -- 12.6.2.2
|
|
bool isFolded{constantFormat->size() != format.source.size() - 2};
|
|
parser::CharBlock reporterCharBlock{isFolded
|
|
? parser::CharBlock{format.source}
|
|
: parser::CharBlock{format.source.begin() + 1,
|
|
static_cast<std::size_t>(0)}};
|
|
FormatErrorReporter reporter{context_, reporterCharBlock};
|
|
auto reporterWrapper{
|
|
[&](const auto &msg) { return reporter.Say(msg); }};
|
|
switch (context_.GetDefaultKind(TypeCategory::Character)) {
|
|
case 1: {
|
|
common::FormatValidator<char> validator{constantFormat->c_str(),
|
|
constantFormat->length(), reporterWrapper, stmt_};
|
|
validator.Check();
|
|
break;
|
|
}
|
|
case 2: {
|
|
// TODO: Get this to work. (Maybe combine with earlier instance?)
|
|
common::FormatValidator<char16_t> validator{
|
|
/*???*/ nullptr, /*???*/ 0, reporterWrapper, stmt_};
|
|
validator.Check();
|
|
break;
|
|
}
|
|
case 4: {
|
|
// TODO: Get this to work. (Maybe combine with earlier instance?)
|
|
common::FormatValidator<char32_t> validator{
|
|
/*???*/ nullptr, /*???*/ 0, reporterWrapper, stmt_};
|
|
validator.Check();
|
|
break;
|
|
}
|
|
default:
|
|
CRASH_NO_CASE;
|
|
}
|
|
},
|
|
},
|
|
spec.u);
|
|
}
|
|
|
|
void IoChecker::Enter(const parser::IdExpr &) { SetSpecifier(IoSpecKind::Id); }
|
|
|
|
void IoChecker::Enter(const parser::IdVariable &spec) {
|
|
SetSpecifier(IoSpecKind::Id);
|
|
auto expr{GetExpr(spec)};
|
|
if (!expr || !expr->GetType()) {
|
|
return;
|
|
}
|
|
int kind{expr->GetType()->kind()};
|
|
int defaultKind{context_.GetDefaultKind(TypeCategory::Integer)};
|
|
if (kind < defaultKind) {
|
|
context_.Say(
|
|
"ID kind (%d) is smaller than default INTEGER kind (%d)"_err_en_US,
|
|
std::move(kind), std::move(defaultKind)); // C1229
|
|
}
|
|
}
|
|
|
|
void IoChecker::Enter(const parser::InputItem &spec) {
|
|
flags_.set(Flag::DataList);
|
|
if (const parser::Variable * var{std::get_if<parser::Variable>(&spec.u)}) {
|
|
const parser::Name &name{GetLastName(*var)};
|
|
if (name.symbol) {
|
|
if (auto *details{name.symbol->detailsIf<ObjectEntityDetails>()}) {
|
|
// TODO: Determine if this check is needed at all, and if so, replace
|
|
// the false subcondition with a check for a whole array. Otherwise,
|
|
// the check incorrectly flags array element and section references.
|
|
if (details->IsAssumedSize() && false) {
|
|
// This check may be superseded by C928 or C1002.
|
|
context_.Say(name.source,
|
|
"'%s' must not be a whole assumed size array"_err_en_US,
|
|
name.source); // C1231
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void IoChecker::Enter(const parser::InquireSpec &spec) {
|
|
// InquireSpec context FileNameExpr
|
|
if (std::get_if<parser::FileNameExpr>(&spec.u)) {
|
|
SetSpecifier(IoSpecKind::File);
|
|
}
|
|
}
|
|
|
|
void IoChecker::Enter(const parser::InquireSpec::CharVar &spec) {
|
|
IoSpecKind specKind{};
|
|
using ParseKind = parser::InquireSpec::CharVar::Kind;
|
|
switch (std::get<ParseKind>(spec.t)) {
|
|
case ParseKind::Access:
|
|
specKind = IoSpecKind::Access;
|
|
break;
|
|
case ParseKind::Action:
|
|
specKind = IoSpecKind::Action;
|
|
break;
|
|
case ParseKind::Asynchronous:
|
|
specKind = IoSpecKind::Asynchronous;
|
|
break;
|
|
case ParseKind::Blank:
|
|
specKind = IoSpecKind::Blank;
|
|
break;
|
|
case ParseKind::Decimal:
|
|
specKind = IoSpecKind::Decimal;
|
|
break;
|
|
case ParseKind::Delim:
|
|
specKind = IoSpecKind::Delim;
|
|
break;
|
|
case ParseKind::Direct:
|
|
specKind = IoSpecKind::Direct;
|
|
break;
|
|
case ParseKind::Encoding:
|
|
specKind = IoSpecKind::Encoding;
|
|
break;
|
|
case ParseKind::Form:
|
|
specKind = IoSpecKind::Form;
|
|
break;
|
|
case ParseKind::Formatted:
|
|
specKind = IoSpecKind::Formatted;
|
|
break;
|
|
case ParseKind::Iomsg:
|
|
specKind = IoSpecKind::Iomsg;
|
|
break;
|
|
case ParseKind::Name:
|
|
specKind = IoSpecKind::Name;
|
|
break;
|
|
case ParseKind::Pad:
|
|
specKind = IoSpecKind::Pad;
|
|
break;
|
|
case ParseKind::Position:
|
|
specKind = IoSpecKind::Position;
|
|
break;
|
|
case ParseKind::Read:
|
|
specKind = IoSpecKind::Read;
|
|
break;
|
|
case ParseKind::Readwrite:
|
|
specKind = IoSpecKind::Readwrite;
|
|
break;
|
|
case ParseKind::Round:
|
|
specKind = IoSpecKind::Round;
|
|
break;
|
|
case ParseKind::Sequential:
|
|
specKind = IoSpecKind::Sequential;
|
|
break;
|
|
case ParseKind::Sign:
|
|
specKind = IoSpecKind::Sign;
|
|
break;
|
|
case ParseKind::Status:
|
|
specKind = IoSpecKind::Status;
|
|
break;
|
|
case ParseKind::Stream:
|
|
specKind = IoSpecKind::Stream;
|
|
break;
|
|
case ParseKind::Unformatted:
|
|
specKind = IoSpecKind::Unformatted;
|
|
break;
|
|
case ParseKind::Write:
|
|
specKind = IoSpecKind::Write;
|
|
break;
|
|
case ParseKind::Convert:
|
|
specKind = IoSpecKind::Convert;
|
|
break;
|
|
case ParseKind::Dispose:
|
|
specKind = IoSpecKind::Dispose;
|
|
break;
|
|
}
|
|
SetSpecifier(specKind);
|
|
}
|
|
|
|
void IoChecker::Enter(const parser::InquireSpec::IntVar &spec) {
|
|
IoSpecKind specKind{};
|
|
using ParseKind = parser::InquireSpec::IntVar::Kind;
|
|
switch (std::get<parser::InquireSpec::IntVar::Kind>(spec.t)) {
|
|
case ParseKind::Iostat:
|
|
specKind = IoSpecKind::Iostat;
|
|
break;
|
|
case ParseKind::Nextrec:
|
|
specKind = IoSpecKind::Nextrec;
|
|
break;
|
|
case ParseKind::Number:
|
|
specKind = IoSpecKind::Number;
|
|
break;
|
|
case ParseKind::Pos:
|
|
specKind = IoSpecKind::Pos;
|
|
break;
|
|
case ParseKind::Recl:
|
|
specKind = IoSpecKind::Recl;
|
|
break;
|
|
case ParseKind::Size:
|
|
specKind = IoSpecKind::Size;
|
|
break;
|
|
}
|
|
SetSpecifier(specKind);
|
|
}
|
|
|
|
void IoChecker::Enter(const parser::InquireSpec::LogVar &spec) {
|
|
IoSpecKind specKind{};
|
|
using ParseKind = parser::InquireSpec::LogVar::Kind;
|
|
switch (std::get<parser::InquireSpec::LogVar::Kind>(spec.t)) {
|
|
case ParseKind::Exist:
|
|
specKind = IoSpecKind::Exist;
|
|
break;
|
|
case ParseKind::Named:
|
|
specKind = IoSpecKind::Named;
|
|
break;
|
|
case ParseKind::Opened:
|
|
specKind = IoSpecKind::Opened;
|
|
break;
|
|
case ParseKind::Pending:
|
|
specKind = IoSpecKind::Pending;
|
|
break;
|
|
}
|
|
SetSpecifier(specKind);
|
|
}
|
|
|
|
void IoChecker::Enter(const parser::IoControlSpec &spec) {
|
|
// IoControlSpec context Name
|
|
flags_.set(Flag::IoControlList);
|
|
if (std::holds_alternative<parser::Name>(spec.u)) {
|
|
SetSpecifier(IoSpecKind::Nml);
|
|
flags_.set(Flag::FmtOrNml);
|
|
}
|
|
}
|
|
|
|
void IoChecker::Enter(const parser::IoControlSpec::Asynchronous &spec) {
|
|
SetSpecifier(IoSpecKind::Asynchronous);
|
|
if (const std::optional<std::string> charConst{
|
|
GetConstExpr<std::string>(spec)}) {
|
|
flags_.set(
|
|
Flag::AsynchronousYes, parser::ToUpperCaseLetters(*charConst) == "YES");
|
|
CheckStringValue(IoSpecKind::Asynchronous, *charConst,
|
|
parser::FindSourceLocation(spec)); // C1223
|
|
}
|
|
}
|
|
|
|
void IoChecker::Enter(const parser::IoControlSpec::CharExpr &spec) {
|
|
IoSpecKind specKind{};
|
|
using ParseKind = parser::IoControlSpec::CharExpr::Kind;
|
|
switch (std::get<ParseKind>(spec.t)) {
|
|
case ParseKind::Advance:
|
|
specKind = IoSpecKind::Advance;
|
|
break;
|
|
case ParseKind::Blank:
|
|
specKind = IoSpecKind::Blank;
|
|
break;
|
|
case ParseKind::Decimal:
|
|
specKind = IoSpecKind::Decimal;
|
|
break;
|
|
case ParseKind::Delim:
|
|
specKind = IoSpecKind::Delim;
|
|
break;
|
|
case ParseKind::Pad:
|
|
specKind = IoSpecKind::Pad;
|
|
break;
|
|
case ParseKind::Round:
|
|
specKind = IoSpecKind::Round;
|
|
break;
|
|
case ParseKind::Sign:
|
|
specKind = IoSpecKind::Sign;
|
|
break;
|
|
}
|
|
SetSpecifier(specKind);
|
|
if (const std::optional<std::string> charConst{GetConstExpr<std::string>(
|
|
std::get<parser::ScalarDefaultCharExpr>(spec.t))}) {
|
|
if (specKind == IoSpecKind::Advance) {
|
|
flags_.set(
|
|
Flag::AdvanceYes, parser::ToUpperCaseLetters(*charConst) == "YES");
|
|
}
|
|
CheckStringValue(specKind, *charConst, parser::FindSourceLocation(spec));
|
|
}
|
|
}
|
|
|
|
void IoChecker::Enter(const parser::IoControlSpec::Pos &) {
|
|
SetSpecifier(IoSpecKind::Pos);
|
|
}
|
|
|
|
void IoChecker::Enter(const parser::IoControlSpec::Rec &) {
|
|
SetSpecifier(IoSpecKind::Rec);
|
|
}
|
|
|
|
void IoChecker::Enter(const parser::IoControlSpec::Size &) {
|
|
SetSpecifier(IoSpecKind::Size);
|
|
}
|
|
|
|
void IoChecker::Enter(const parser::IoUnit &spec) {
|
|
if (const parser::Variable * var{std::get_if<parser::Variable>(&spec.u)}) {
|
|
// TODO: C1201 - internal file variable must not be an array section ...
|
|
if (auto expr{GetExpr(*var)}) {
|
|
if (!ExprTypeKindIsDefault(*expr, context_)) {
|
|
// This may be too restrictive; other kinds may be valid.
|
|
context_.Say( // C1202
|
|
"Invalid character kind for an internal file variable"_err_en_US);
|
|
}
|
|
}
|
|
SetSpecifier(IoSpecKind::Unit);
|
|
flags_.set(Flag::InternalUnit);
|
|
} else if (std::get_if<parser::Star>(&spec.u)) {
|
|
SetSpecifier(IoSpecKind::Unit);
|
|
flags_.set(Flag::StarUnit);
|
|
}
|
|
}
|
|
|
|
void IoChecker::Enter(const parser::MsgVariable &) {
|
|
SetSpecifier(IoSpecKind::Iomsg);
|
|
}
|
|
|
|
void IoChecker::Enter(const parser::OutputItem &) {
|
|
flags_.set(Flag::DataList);
|
|
// TODO: C1233 - output item must not be a procedure pointer
|
|
}
|
|
|
|
void IoChecker::Enter(const parser::StatusExpr &spec) {
|
|
SetSpecifier(IoSpecKind::Status);
|
|
if (const std::optional<std::string> charConst{
|
|
GetConstExpr<std::string>(spec)}) {
|
|
// Status values for Open and Close are different.
|
|
std::string s{parser::ToUpperCaseLetters(*charConst)};
|
|
if (stmt_ == IoStmtKind::Open) {
|
|
flags_.set(Flag::KnownStatus);
|
|
flags_.set(Flag::StatusNew, s == "NEW");
|
|
flags_.set(Flag::StatusReplace, s == "REPLACE");
|
|
flags_.set(Flag::StatusScratch, s == "SCRATCH");
|
|
// CheckStringValue compares for OPEN Status string values.
|
|
CheckStringValue(
|
|
IoSpecKind::Status, *charConst, parser::FindSourceLocation(spec));
|
|
return;
|
|
}
|
|
CHECK(stmt_ == IoStmtKind::Close);
|
|
if (s != "DELETE" && s != "KEEP") {
|
|
context_.Say(parser::FindSourceLocation(spec),
|
|
"Invalid STATUS value '%s'"_err_en_US, *charConst);
|
|
}
|
|
}
|
|
}
|
|
|
|
void IoChecker::Enter(const parser::StatVariable &) {
|
|
if (stmt_ == IoStmtKind::None) {
|
|
// ALLOCATE & DEALLOCATE
|
|
} else {
|
|
SetSpecifier(IoSpecKind::Iostat);
|
|
}
|
|
}
|
|
|
|
void IoChecker::Leave(const parser::BackspaceStmt &) {
|
|
CheckForPureSubprogram();
|
|
CheckForRequiredSpecifier(
|
|
flags_.test(Flag::NumberUnit), "UNIT number"); // C1240
|
|
Done();
|
|
}
|
|
|
|
void IoChecker::Leave(const parser::CloseStmt &) {
|
|
CheckForPureSubprogram();
|
|
CheckForRequiredSpecifier(
|
|
flags_.test(Flag::NumberUnit), "UNIT number"); // C1208
|
|
Done();
|
|
}
|
|
|
|
void IoChecker::Leave(const parser::EndfileStmt &) {
|
|
CheckForPureSubprogram();
|
|
CheckForRequiredSpecifier(
|
|
flags_.test(Flag::NumberUnit), "UNIT number"); // C1240
|
|
Done();
|
|
}
|
|
|
|
void IoChecker::Leave(const parser::FlushStmt &) {
|
|
CheckForPureSubprogram();
|
|
CheckForRequiredSpecifier(
|
|
flags_.test(Flag::NumberUnit), "UNIT number"); // C1243
|
|
Done();
|
|
}
|
|
|
|
void IoChecker::Leave(const parser::InquireStmt &stmt) {
|
|
if (std::get_if<std::list<parser::InquireSpec>>(&stmt.u)) {
|
|
CheckForPureSubprogram();
|
|
// Inquire by unit or by file (vs. by output list).
|
|
CheckForRequiredSpecifier(
|
|
flags_.test(Flag::NumberUnit) || specifierSet_.test(IoSpecKind::File),
|
|
"UNIT number or FILE"); // C1246
|
|
CheckForProhibitedSpecifier(IoSpecKind::File, IoSpecKind::Unit); // C1246
|
|
CheckForRequiredSpecifier(IoSpecKind::Id, IoSpecKind::Pending); // C1248
|
|
}
|
|
Done();
|
|
}
|
|
|
|
void IoChecker::Leave(const parser::OpenStmt &) {
|
|
CheckForPureSubprogram();
|
|
CheckForRequiredSpecifier(specifierSet_.test(IoSpecKind::Unit) ||
|
|
specifierSet_.test(IoSpecKind::Newunit),
|
|
"UNIT or NEWUNIT"); // C1204, C1205
|
|
CheckForProhibitedSpecifier(
|
|
IoSpecKind::Newunit, IoSpecKind::Unit); // C1204, C1205
|
|
CheckForRequiredSpecifier(flags_.test(Flag::StatusNew), "STATUS='NEW'",
|
|
IoSpecKind::File); // 12.5.6.10
|
|
CheckForRequiredSpecifier(flags_.test(Flag::StatusReplace),
|
|
"STATUS='REPLACE'", IoSpecKind::File); // 12.5.6.10
|
|
CheckForProhibitedSpecifier(flags_.test(Flag::StatusScratch),
|
|
"STATUS='SCRATCH'", IoSpecKind::File); // 12.5.6.10
|
|
if (flags_.test(Flag::KnownStatus)) {
|
|
CheckForRequiredSpecifier(IoSpecKind::Newunit,
|
|
specifierSet_.test(IoSpecKind::File) ||
|
|
flags_.test(Flag::StatusScratch),
|
|
"FILE or STATUS='SCRATCH'"); // 12.5.6.12
|
|
} else {
|
|
CheckForRequiredSpecifier(IoSpecKind::Newunit,
|
|
specifierSet_.test(IoSpecKind::File) ||
|
|
specifierSet_.test(IoSpecKind::Status),
|
|
"FILE or STATUS"); // 12.5.6.12
|
|
}
|
|
if (flags_.test(Flag::KnownAccess)) {
|
|
CheckForRequiredSpecifier(flags_.test(Flag::AccessDirect),
|
|
"ACCESS='DIRECT'", IoSpecKind::Recl); // 12.5.6.15
|
|
CheckForProhibitedSpecifier(flags_.test(Flag::AccessStream),
|
|
"STATUS='STREAM'", IoSpecKind::Recl); // 12.5.6.15
|
|
}
|
|
Done();
|
|
}
|
|
|
|
void IoChecker::Leave(const parser::PrintStmt &) {
|
|
CheckForPureSubprogram();
|
|
Done();
|
|
}
|
|
|
|
static void CheckForDoVariableInNamelist(const Symbol &namelist,
|
|
SemanticsContext &context, parser::CharBlock namelistLocation) {
|
|
const auto &details{namelist.GetUltimate().get<NamelistDetails>()};
|
|
for (const Symbol &object : details.objects()) {
|
|
context.CheckIndexVarRedefine(namelistLocation, object);
|
|
}
|
|
}
|
|
|
|
static void CheckForDoVariableInNamelistSpec(
|
|
const parser::ReadStmt &readStmt, SemanticsContext &context) {
|
|
const std::list<parser::IoControlSpec> &controls{readStmt.controls};
|
|
for (const auto &control : controls) {
|
|
if (const auto *namelist{std::get_if<parser::Name>(&control.u)}) {
|
|
if (const Symbol * symbol{namelist->symbol}) {
|
|
CheckForDoVariableInNamelist(*symbol, context, namelist->source);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void CheckForDoVariable(
|
|
const parser::ReadStmt &readStmt, SemanticsContext &context) {
|
|
CheckForDoVariableInNamelistSpec(readStmt, context);
|
|
const std::list<parser::InputItem> &items{readStmt.items};
|
|
for (const auto &item : items) {
|
|
if (const parser::Variable *
|
|
variable{std::get_if<parser::Variable>(&item.u)}) {
|
|
context.CheckIndexVarRedefine(*variable);
|
|
}
|
|
}
|
|
}
|
|
|
|
void IoChecker::Leave(const parser::ReadStmt &readStmt) {
|
|
if (!flags_.test(Flag::InternalUnit)) {
|
|
CheckForPureSubprogram();
|
|
}
|
|
CheckForDoVariable(readStmt, context_);
|
|
if (!flags_.test(Flag::IoControlList)) {
|
|
Done();
|
|
return;
|
|
}
|
|
LeaveReadWrite();
|
|
CheckForProhibitedSpecifier(IoSpecKind::Delim); // C1212
|
|
CheckForProhibitedSpecifier(IoSpecKind::Sign); // C1212
|
|
CheckForProhibitedSpecifier(IoSpecKind::Rec, IoSpecKind::End); // C1220
|
|
CheckForRequiredSpecifier(IoSpecKind::Eor,
|
|
specifierSet_.test(IoSpecKind::Advance) && !flags_.test(Flag::AdvanceYes),
|
|
"ADVANCE with value 'NO'"); // C1222 + 12.6.2.1p2
|
|
CheckForRequiredSpecifier(IoSpecKind::Blank, flags_.test(Flag::FmtOrNml),
|
|
"FMT or NML"); // C1227
|
|
CheckForRequiredSpecifier(
|
|
IoSpecKind::Pad, flags_.test(Flag::FmtOrNml), "FMT or NML"); // C1227
|
|
Done();
|
|
}
|
|
|
|
void IoChecker::Leave(const parser::RewindStmt &) {
|
|
CheckForRequiredSpecifier(
|
|
flags_.test(Flag::NumberUnit), "UNIT number"); // C1240
|
|
CheckForPureSubprogram();
|
|
Done();
|
|
}
|
|
|
|
void IoChecker::Leave(const parser::WaitStmt &) {
|
|
CheckForRequiredSpecifier(
|
|
flags_.test(Flag::NumberUnit), "UNIT number"); // C1237
|
|
CheckForPureSubprogram();
|
|
Done();
|
|
}
|
|
|
|
void IoChecker::Leave(const parser::WriteStmt &) {
|
|
if (!flags_.test(Flag::InternalUnit)) {
|
|
CheckForPureSubprogram();
|
|
}
|
|
LeaveReadWrite();
|
|
CheckForProhibitedSpecifier(IoSpecKind::Blank); // C1213
|
|
CheckForProhibitedSpecifier(IoSpecKind::End); // C1213
|
|
CheckForProhibitedSpecifier(IoSpecKind::Eor); // C1213
|
|
CheckForProhibitedSpecifier(IoSpecKind::Pad); // C1213
|
|
CheckForProhibitedSpecifier(IoSpecKind::Size); // C1213
|
|
CheckForRequiredSpecifier(
|
|
IoSpecKind::Sign, flags_.test(Flag::FmtOrNml), "FMT or NML"); // C1227
|
|
CheckForRequiredSpecifier(IoSpecKind::Delim,
|
|
flags_.test(Flag::StarFmt) || specifierSet_.test(IoSpecKind::Nml),
|
|
"FMT=* or NML"); // C1228
|
|
Done();
|
|
}
|
|
|
|
void IoChecker::LeaveReadWrite() const {
|
|
CheckForRequiredSpecifier(IoSpecKind::Unit); // C1211
|
|
CheckForProhibitedSpecifier(IoSpecKind::Nml, IoSpecKind::Rec); // C1216
|
|
CheckForProhibitedSpecifier(IoSpecKind::Nml, IoSpecKind::Fmt); // C1216
|
|
CheckForProhibitedSpecifier(
|
|
IoSpecKind::Nml, flags_.test(Flag::DataList), "a data list"); // C1216
|
|
CheckForProhibitedSpecifier(flags_.test(Flag::InternalUnit),
|
|
"UNIT=internal-file", IoSpecKind::Pos); // C1219
|
|
CheckForProhibitedSpecifier(flags_.test(Flag::InternalUnit),
|
|
"UNIT=internal-file", IoSpecKind::Rec); // C1219
|
|
CheckForProhibitedSpecifier(
|
|
flags_.test(Flag::StarUnit), "UNIT=*", IoSpecKind::Pos); // C1219
|
|
CheckForProhibitedSpecifier(
|
|
flags_.test(Flag::StarUnit), "UNIT=*", IoSpecKind::Rec); // C1219
|
|
CheckForProhibitedSpecifier(
|
|
IoSpecKind::Rec, flags_.test(Flag::StarFmt), "FMT=*"); // C1220
|
|
CheckForRequiredSpecifier(IoSpecKind::Advance,
|
|
flags_.test(Flag::CharFmt) || flags_.test(Flag::LabelFmt) ||
|
|
flags_.test(Flag::AssignFmt),
|
|
"an explicit format"); // C1221
|
|
CheckForProhibitedSpecifier(IoSpecKind::Advance,
|
|
flags_.test(Flag::InternalUnit), "UNIT=internal-file"); // C1221
|
|
CheckForRequiredSpecifier(flags_.test(Flag::AsynchronousYes),
|
|
"ASYNCHRONOUS='YES'", flags_.test(Flag::NumberUnit),
|
|
"UNIT=number"); // C1224
|
|
CheckForRequiredSpecifier(IoSpecKind::Id, flags_.test(Flag::AsynchronousYes),
|
|
"ASYNCHRONOUS='YES'"); // C1225
|
|
CheckForProhibitedSpecifier(IoSpecKind::Pos, IoSpecKind::Rec); // C1226
|
|
CheckForRequiredSpecifier(IoSpecKind::Decimal, flags_.test(Flag::FmtOrNml),
|
|
"FMT or NML"); // C1227
|
|
CheckForRequiredSpecifier(IoSpecKind::Round, flags_.test(Flag::FmtOrNml),
|
|
"FMT or NML"); // C1227
|
|
}
|
|
|
|
void IoChecker::SetSpecifier(IoSpecKind specKind) {
|
|
if (stmt_ == IoStmtKind::None) {
|
|
// FMT may appear on PRINT statements, which don't have any checks.
|
|
// [IO]MSG and [IO]STAT parse symbols are shared with non-I/O statements.
|
|
return;
|
|
}
|
|
// C1203, C1207, C1210, C1236, C1239, C1242, C1245
|
|
if (specifierSet_.test(specKind)) {
|
|
context_.Say("Duplicate %s specifier"_err_en_US,
|
|
parser::ToUpperCaseLetters(common::EnumToString(specKind)));
|
|
}
|
|
specifierSet_.set(specKind);
|
|
}
|
|
|
|
void IoChecker::CheckStringValue(IoSpecKind specKind, const std::string &value,
|
|
const parser::CharBlock &source) const {
|
|
static std::unordered_map<IoSpecKind, const std::set<std::string>> specValues{
|
|
{IoSpecKind::Access, {"DIRECT", "SEQUENTIAL", "STREAM"}},
|
|
{IoSpecKind::Action, {"READ", "READWRITE", "WRITE"}},
|
|
{IoSpecKind::Advance, {"NO", "YES"}},
|
|
{IoSpecKind::Asynchronous, {"NO", "YES"}},
|
|
{IoSpecKind::Blank, {"NULL", "ZERO"}},
|
|
{IoSpecKind::Decimal, {"COMMA", "POINT"}},
|
|
{IoSpecKind::Delim, {"APOSTROPHE", "NONE", "QUOTE"}},
|
|
{IoSpecKind::Encoding, {"DEFAULT", "UTF-8"}},
|
|
{IoSpecKind::Form, {"FORMATTED", "UNFORMATTED"}},
|
|
{IoSpecKind::Pad, {"NO", "YES"}},
|
|
{IoSpecKind::Position, {"APPEND", "ASIS", "REWIND"}},
|
|
{IoSpecKind::Round,
|
|
{"COMPATIBLE", "DOWN", "NEAREST", "PROCESSOR_DEFINED", "UP", "ZERO"}},
|
|
{IoSpecKind::Sign, {"PLUS", "PROCESSOR_DEFINED", "SUPPRESS"}},
|
|
{IoSpecKind::Status,
|
|
// Open values; Close values are {"DELETE", "KEEP"}.
|
|
{"NEW", "OLD", "REPLACE", "SCRATCH", "UNKNOWN"}},
|
|
{IoSpecKind::Convert, {"BIG_ENDIAN", "LITTLE_ENDIAN", "NATIVE"}},
|
|
{IoSpecKind::Dispose, {"DELETE", "KEEP"}},
|
|
};
|
|
if (!specValues.at(specKind).count(parser::ToUpperCaseLetters(value))) {
|
|
context_.Say(source, "Invalid %s value '%s'"_err_en_US,
|
|
parser::ToUpperCaseLetters(common::EnumToString(specKind)), value);
|
|
}
|
|
}
|
|
|
|
// CheckForRequiredSpecifier and CheckForProhibitedSpecifier functions
|
|
// need conditions to check, and string arguments to insert into a message.
|
|
// A IoSpecKind provides both an absence/presence condition and a string
|
|
// argument (its name). A (condition, string) pair provides an arbitrary
|
|
// condition and an arbitrary string.
|
|
|
|
void IoChecker::CheckForRequiredSpecifier(IoSpecKind specKind) const {
|
|
if (!specifierSet_.test(specKind)) {
|
|
context_.Say("%s statement must have a %s specifier"_err_en_US,
|
|
parser::ToUpperCaseLetters(common::EnumToString(stmt_)),
|
|
parser::ToUpperCaseLetters(common::EnumToString(specKind)));
|
|
}
|
|
}
|
|
|
|
void IoChecker::CheckForRequiredSpecifier(
|
|
bool condition, const std::string &s) const {
|
|
if (!condition) {
|
|
context_.Say("%s statement must have a %s specifier"_err_en_US,
|
|
parser::ToUpperCaseLetters(common::EnumToString(stmt_)), s);
|
|
}
|
|
}
|
|
|
|
void IoChecker::CheckForRequiredSpecifier(
|
|
IoSpecKind specKind1, IoSpecKind specKind2) const {
|
|
if (specifierSet_.test(specKind1) && !specifierSet_.test(specKind2)) {
|
|
context_.Say("If %s appears, %s must also appear"_err_en_US,
|
|
parser::ToUpperCaseLetters(common::EnumToString(specKind1)),
|
|
parser::ToUpperCaseLetters(common::EnumToString(specKind2)));
|
|
}
|
|
}
|
|
|
|
void IoChecker::CheckForRequiredSpecifier(
|
|
IoSpecKind specKind, bool condition, const std::string &s) const {
|
|
if (specifierSet_.test(specKind) && !condition) {
|
|
context_.Say("If %s appears, %s must also appear"_err_en_US,
|
|
parser::ToUpperCaseLetters(common::EnumToString(specKind)), s);
|
|
}
|
|
}
|
|
|
|
void IoChecker::CheckForRequiredSpecifier(
|
|
bool condition, const std::string &s, IoSpecKind specKind) const {
|
|
if (condition && !specifierSet_.test(specKind)) {
|
|
context_.Say("If %s appears, %s must also appear"_err_en_US, s,
|
|
parser::ToUpperCaseLetters(common::EnumToString(specKind)));
|
|
}
|
|
}
|
|
|
|
void IoChecker::CheckForRequiredSpecifier(bool condition1,
|
|
const std::string &s1, bool condition2, const std::string &s2) const {
|
|
if (condition1 && !condition2) {
|
|
context_.Say("If %s appears, %s must also appear"_err_en_US, s1, s2);
|
|
}
|
|
}
|
|
|
|
void IoChecker::CheckForProhibitedSpecifier(IoSpecKind specKind) const {
|
|
if (specifierSet_.test(specKind)) {
|
|
context_.Say("%s statement must not have a %s specifier"_err_en_US,
|
|
parser::ToUpperCaseLetters(common::EnumToString(stmt_)),
|
|
parser::ToUpperCaseLetters(common::EnumToString(specKind)));
|
|
}
|
|
}
|
|
|
|
void IoChecker::CheckForProhibitedSpecifier(
|
|
IoSpecKind specKind1, IoSpecKind specKind2) const {
|
|
if (specifierSet_.test(specKind1) && specifierSet_.test(specKind2)) {
|
|
context_.Say("If %s appears, %s must not appear"_err_en_US,
|
|
parser::ToUpperCaseLetters(common::EnumToString(specKind1)),
|
|
parser::ToUpperCaseLetters(common::EnumToString(specKind2)));
|
|
}
|
|
}
|
|
|
|
void IoChecker::CheckForProhibitedSpecifier(
|
|
IoSpecKind specKind, bool condition, const std::string &s) const {
|
|
if (specifierSet_.test(specKind) && condition) {
|
|
context_.Say("If %s appears, %s must not appear"_err_en_US,
|
|
parser::ToUpperCaseLetters(common::EnumToString(specKind)), s);
|
|
}
|
|
}
|
|
|
|
void IoChecker::CheckForProhibitedSpecifier(
|
|
bool condition, const std::string &s, IoSpecKind specKind) const {
|
|
if (condition && specifierSet_.test(specKind)) {
|
|
context_.Say("If %s appears, %s must not appear"_err_en_US, s,
|
|
parser::ToUpperCaseLetters(common::EnumToString(specKind)));
|
|
}
|
|
}
|
|
|
|
void IoChecker::CheckForPureSubprogram() const { // C1597
|
|
CHECK(context_.location());
|
|
if (FindPureProcedureContaining(context_.FindScope(*context_.location()))) {
|
|
context_.Say("External I/O is not allowed in a pure subprogram"_err_en_US);
|
|
}
|
|
}
|
|
|
|
} // namespace Fortran::semantics
|