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64 lines
3.1 KiB
C++
64 lines
3.1 KiB
C++
//===-- RegexParserBridging.h --- Regex parser interface -*- C++ -*-===//
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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) 2014 - 2017 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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#ifndef REGEX_PARSER_BRIDGING
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#define REGEX_PARSER_BRIDGING
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#include "swift/AST/ASTBridging.h"
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#include <stdbool.h>
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/// Attempt to lex a regex literal string. Takes the following arguments:
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///
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/// - CurPtrPtr: A pointer to the current pointer of lexer, which should be the
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/// start of the literal. This will be advanced to the point at
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/// which the lexer should resume, or will remain the same if this
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/// is not a regex literal.
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/// - BufferEnd: A pointer to the end of the buffer, which should not be lexed
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/// past.
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/// - MustBeRegex: whether an error during lexing should be considered a regex
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/// literal, or some thing else.
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/// - OptionalDiagnosticEngine: RegexLiteralLexingFn should diagnose the
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/// token using this engine.
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///
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/// Returns: A bool indicating whether lexing was completely erroneous, and
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/// cannot be recovered from, or false if there either was no error,
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/// or there was a recoverable error.
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typedef bool (*RegexLiteralLexingFn)(
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/*CurPtrPtr*/ const char *_Nonnull *_Nonnull,
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/*BufferEnd*/ const char *_Nonnull,
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/*MustBeRegex*/ bool, swift::DiagnosticEngine *_Nullable);
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void Parser_registerRegexLiteralLexingFn(RegexLiteralLexingFn _Nullable fn);
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/// Parse a regex literal string. Takes the following arguments:
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///
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/// - InputPtr: A null-terminated C string of the regex literal.
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/// - VersionOut: A buffer accepting a regex literal format version.
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/// - CaptureStructureOut: A buffer accepting a byte sequence representing the
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/// capture structure of the literal.
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/// - CaptureStructureSize: The size of the capture structure buffer. Must be
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/// greater than or equal to `strlen(InputPtr) + 3`.
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/// - DiagnosticBaseLoc: Start location of the regex literal.
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/// - DiagnosticEngine: RegexLiteralParsingFn should diagnose the
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/// parsing errors using this engine.
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///
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/// Returns: A bool value indicating if there was an error while parsing.
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typedef bool (*RegexLiteralParsingFn)(/*InputPtr*/ const char *_Nonnull,
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/*VersionOut*/ unsigned *_Nonnull,
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/*CaptureStructureOut*/ void *_Nonnull,
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/*CaptureStructureSize*/ unsigned,
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/*DiagnosticBaseLoc*/ swift::SourceLoc,
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swift::DiagnosticEngine &);
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void Parser_registerRegexLiteralParsingFn(RegexLiteralParsingFn _Nullable fn);
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#endif // REGEX_PARSER_BRIDGING
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