3d2120989a
Original-commit: flang-compiler/f18@e3eaca38fd Reviewed-on: https://github.com/flang-compiler/f18/pull/60
69 lines
2.3 KiB
C++
69 lines
2.3 KiB
C++
#include "parse-tree.h"
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#include "idioms.h"
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#include "indirection.h"
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#include "user-state.h"
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#include <algorithm>
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namespace Fortran {
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namespace parser {
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// R867
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ImportStmt::ImportStmt(Kind &&k, std::list<Name> &&n)
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: kind{k}, names(std::move(n)) {
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CHECK(kind == Kind::Default || kind == Kind::Only || names.empty());
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}
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// R901 designator
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bool Designator::EndsInBareName() const {
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return std::visit(
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visitors{[](const ObjectName &) { return true; },
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[](const DataRef &dr) {
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return std::holds_alternative<Name>(dr.u) ||
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std::holds_alternative<Indirection<StructureComponent>>(dr.u);
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},
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[](const Substring &) { return false; }},
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u);
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}
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// R911 data-ref -> part-ref [% part-ref]...
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DataRef::DataRef(std::list<PartRef> &&prl) : u{std::move(prl.front().name)} {
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for (bool first{true}; !prl.empty(); first = false, prl.pop_front()) {
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PartRef &pr{prl.front()};
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if (!first) {
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u = Indirection<StructureComponent>{std::move(*this), std::move(pr.name)};
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}
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if (!pr.subscripts.empty()) {
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u = Indirection<ArrayElement>{std::move(*this), std::move(pr.subscripts)};
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}
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if (pr.imageSelector.has_value()) {
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u = Indirection<CoindexedNamedObject>{
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std::move(*this), std::move(*pr.imageSelector)};
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}
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}
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}
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// R1001 - R1022 expression
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Expr::Expr(Designator &&x) : u{Indirection<Designator>(std::move(x))} {}
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Expr::Expr(FunctionReference &&x)
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: u{Indirection<FunctionReference>(std::move(x))} {}
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// R1544 stmt-function-stmt
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// Convert this stmt-function-stmt to an array element assignment statement.
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Statement<ActionStmt> StmtFunctionStmt::ConvertToAssignment() {
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auto &funcName = std::get<Name>(t);
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auto &funcArgs = std::get<std::list<Name>>(t);
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auto &funcExpr = std::get<Scalar<Expr>>(t).thing;
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ArrayElement arrayElement{funcName, std::list<SectionSubscript>{}};
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for (Name &arg : funcArgs) {
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arrayElement.subscripts.push_back(SectionSubscript{
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Scalar{Integer{Indirection{Expr{Indirection{Designator{arg}}}}}}});
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}
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auto &&variable = Variable{
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Indirection{Designator{DataRef{Indirection{std::move(arrayElement)}}}}};
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return Statement{std::nullopt,
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ActionStmt{Indirection{
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AssignmentStmt{std::move(variable), std::move(funcExpr)}}}};
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}
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} // namespace parser
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} // namespace Fortran
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