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d292a95296
This fixes: * An issue where the diagnostic messages were leaked * Diagnose at correct position inside the regex literal To do this: * Introduce 'Parse' SwiftCompiler module that is a bridging layer between '_CompilerRegexParser' and C++ libParse * Move libswiftParseRegexLiteral and libswiftLexRegexLiteral to 'Parse' Also this change makes 'SwiftCompilerSources/Package.swift' be configured by CMake so it can actually be built with 'swift-build'. rdar://92187284
63 lines
2.3 KiB
C++
63 lines
2.3 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/ParsedSyntaxRecorder.h"
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#include "swift/Parse/Parser.h"
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#include "swift/Parse/SyntaxParsingContext.h"
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#include "swift/Syntax/SyntaxKind.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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using namespace swift::syntax;
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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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SyntaxParsingContext LocalContext(SyntaxContext,
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SyntaxKind::RegexLiteralExpr);
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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;
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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*/ getBridgedSourceLoc(Tok.getLoc()),
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getBridgedDiagnosticEngine(&Diags));
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auto loc = consumeToken();
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if (hadError) {
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return makeParserResult(new (Context) ErrorExpr(loc));
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}
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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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