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2dbd6cc56b
Introduce two modes of bridging: * inline mode: this is basically how it worked so far. Using full C++ interop which allows bridging functions to be inlined. * pure mode: bridging functions are not inlined but compiled in a cpp file. This allows to reduce the C++ interop requirements to a minimum. No std/llvm/swift headers are imported. This change requires a major refactoring of bridging sources. The implementation of bridging functions go to two separate files: SILBridgingImpl.h and OptimizerBridgingImpl.h. Depending on the mode, those files are either included in the corresponding header files (inline mode), or included in the c++ file (pure mode). The mode can be selected with the BRIDGING_MODE cmake variable. By default it is set to the inline mode (= existing behavior). The pure mode is only selected in certain configurations to work around C++ interop issues: * In debug builds, to workaround a problem with LLDB's `po` command (rdar://115770255). * On windows to workaround a build problem.
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*/ {(const uint8_t *)(Tok.getLoc().getOpaquePointerValue())},
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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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