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220e6faad4
This reverts commit e9dedf3c27.
The revert is required as foreign reference types are available for SwiftStdlib 5.8 and above, but the Swift compiler
sources back deploy to older stdlibs as well.
59 lines
2.1 KiB
C++
59 lines
2.1 KiB
C++
//===--- ParseRegex.cpp - Regular expression literal parsing --------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2021 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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//
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// Regular expression literal parsing
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//
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//===----------------------------------------------------------------------===//
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#include "swift/AST/BridgingUtils.h"
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#include "swift/AST/DiagnosticsParse.h"
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#include "swift/Basic/BridgingUtils.h"
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#include "swift/Parse/Parser.h"
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// Regex parser delivered via Swift modules.
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#include "swift/Parse/RegexParserBridging.h"
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static RegexLiteralParsingFn regexLiteralParsingFn = nullptr;
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void Parser_registerRegexLiteralParsingFn(RegexLiteralParsingFn fn) {
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regexLiteralParsingFn = fn;
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}
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using namespace swift;
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ParserResult<Expr> Parser::parseExprRegexLiteral() {
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assert(Tok.is(tok::regex_literal));
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assert(regexLiteralParsingFn);
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auto regexText = Tok.getText();
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// Let the Swift library parse the contents, returning an error, or null if
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// successful.
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unsigned version = 0;
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auto capturesBuf = Context.AllocateUninitialized<uint8_t>(
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RegexLiteralExpr::getCaptureStructureSerializationAllocationSize(
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regexText.size()));
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bool hadError =
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regexLiteralParsingFn(regexText.str().c_str(), &version,
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/*captureStructureOut*/ capturesBuf.data(),
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/*captureStructureSize*/ capturesBuf.size(),
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/*diagBaseLoc*/ Tok.getLoc(),
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getBridgedDiagnosticEngine(&Diags));
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auto loc = consumeToken();
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SourceMgr.recordRegexLiteralStartLoc(loc);
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if (hadError) {
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return makeParserResult(new (Context) ErrorExpr(loc));
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}
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assert(version >= 1);
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return makeParserResult(RegexLiteralExpr::createParsed(
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Context, loc, regexText, version, capturesBuf));
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}
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