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Merge 984472b2c into 1ac20ffd5

Pull Request Pull Request #527: Bump dependencies and fix lints

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/lib/src/header_parser/utils.dart

// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import 'dart:ffi';

import 'package:ffi/ffi.dart';
import 'package:ffigen/src/code_generator.dart';
import 'package:ffigen/src/config_provider/config_types.dart';
import 'package:logging/logging.dart';

import 'clang_bindings/clang_bindings.dart' as clang_types;
import 'data.dart';
import 'type_extractor/extractor.dart';

final _logger = Logger('ffigen.header_parser.utils');

const exceptional_visitor_return =
    clang_types.CXChildVisitResult.CXChildVisit_Break;

/// Check [resultCode] of [clang.clang_visitChildren_wrap].
///
/// Throws exception if resultCode is not [exceptional_visitor_return].
void visitChildrenResultChecker(int resultCode) {
  if (resultCode != exceptional_visitor_return) {
    throw Exception(
        'Exception thrown in a dart function called via C, use --verbose to see more details');
  }
}

/// Logs the warnings/errors returned by clang for a translation unit.
void logTuDiagnostics(
    Pointer<clang_types.CXTranslationUnitImpl> tu, Logger logger, String header,
    {Level logLevel = Level.SEVERE}) {
  final total = clang.clang_getNumDiagnostics(tu);
  if (total == 0) {
    return;
  }
  logger.log(logLevel, 'Header $header: Total errors/warnings: $total.');
  for (var i = 0; i < total; i++) {
    final diag = clang.clang_getDiagnostic(tu, i);
    final cxstring = clang.clang_formatDiagnostic(
      diag,
      clang_types
              .CXDiagnosticDisplayOptions.CXDiagnostic_DisplaySourceLocation |
          clang_types.CXDiagnosticDisplayOptions.CXDiagnostic_DisplayColumn |
          clang_types
              .CXDiagnosticDisplayOptions.CXDiagnostic_DisplayCategoryName,
    );
    logger.log(logLevel, '    ${cxstring.toStringAndDispose()}');
    clang.clang_disposeDiagnostic(diag);
  }
}

extension CXSourceRangeExt on Pointer<clang_types.CXSourceRange> {
  void dispose() {
    calloc.free(this);
  }
}

extension CXCursorExt on clang_types.CXCursor {
  String usr() {
    return clang.clang_getCursorUSR(this).toStringAndDispose();
  }

  /// Returns the kind int from [clang_types.CXCursorKind].
  int kind() {
    return clang.clang_getCursorKind(this);
  }

  /// Name of the cursor (E.g function name, Struct name, Parameter name).
  String spelling() {
    return clang.clang_getCursorSpelling(this).toStringAndDispose();
  }

  /// Spelling for a [clang_types.CXCursorKind], useful for debug purposes.
  String kindSpelling() {
    return clang
        .clang_getCursorKindSpelling(clang.clang_getCursorKind(this))
        .toStringAndDispose();
  }

  /// for debug: returns [spelling] [kind] [kindSpelling] [type] [typeSpelling].
  String completeStringRepr() {
    final cxtype = type();
    final s =
        '(Cursor) spelling: ${spelling()}, kind: ${kind()}, kindSpelling: ${kindSpelling()}, type: ${cxtype.kind}, typeSpelling: ${cxtype.spelling()}, usr: ${usr()}';
    return s;
  }

  /// Type associated with the pointer if any. Type will have kind
  /// [clang.CXTypeKind.CXType_Invalid] otherwise.
  clang_types.CXType type() {
    return clang.clang_getCursorType(this);
  }

  /// Determine whether the given cursor
  /// represents an anonymous record declaration.
  bool isAnonymousRecordDecl() {
    return clang.clang_Cursor_isAnonymousRecordDecl(this) == 1;
  }

  /// Only valid for [clang.CXCursorKind.CXCursor_FunctionDecl]. Type will have
  /// kind [clang.CXTypeKind.CXType_Invalid] otherwise.
  clang_types.CXType returnType() {
    return clang.clang_getResultType(type());
  }

  /// Returns the file name of the file that the cursor is inside.
  String sourceFileName() {
    final cxsource = clang.clang_getCursorLocation(this);
    final cxfilePtr = calloc<Pointer<Void>>();

    // Puts the values in these pointers.
    clang.clang_getFileLocation(cxsource, cxfilePtr, nullptr, nullptr, nullptr);
    final s = clang.clang_getFileName(cxfilePtr.value).toStringAndDispose();

    calloc.free(cxfilePtr);
    return s;
  }

  /// Returns whether the file that the cursor is inside is a system header.
  bool isInSystemHeader() {
    final location = clang.clang_getCursorLocation(this);
    return clang.clang_Location_isInSystemHeader(location) != 0;
  }

  /// Recursively print the AST, for debugging.
  void printAst([int maxDepth = 3]) {
    _printAstVisitorMaxDepth = maxDepth;
    _printAstVisitor(this, this, Pointer<Void>.fromAddress(0));
  }
}

Pointer<
        NativeFunction<
            Int32 Function(
                clang_types.CXCursor, clang_types.CXCursor, Pointer<Void>)>>?
    _printAstVisitorPtr;
int _printAstVisitorMaxDepth = 0;
int _printAstVisitor(clang_types.CXCursor cursor, clang_types.CXCursor parent,
    Pointer<Void> clientData) {
  final depth = clientData.address;
  if (depth > _printAstVisitorMaxDepth) {
    return clang_types.CXChildVisitResult.CXChildVisit_Break;
  }
  print(('  ' * depth) + cursor.completeStringRepr());
  clang.clang_visitChildren(
      cursor,
      _printAstVisitorPtr ??=
          Pointer.fromFunction(_printAstVisitor, exceptional_visitor_return),
      Pointer<Void>.fromAddress(depth + 1));
  return clang_types.CXChildVisitResult.CXChildVisit_Continue;
}

const commentPrefix = '/// ';
const nesting = '  ';

/// Stores the [clang_types.CXSourceRange] of the last comment.
clang_types.CXSourceRange? lastCommentRange;

/// Returns a cursor's associated comment.
///
/// The given string is wrapped at line width = 80 - [indent]. The [indent] is
/// [commentPrefix.dimensions] by default because a comment starts with
/// [commentPrefix].
String? getCursorDocComment(clang_types.CXCursor cursor,
    [int indent = commentPrefix.length]) {
  String? formattedDocComment;
  final currentCommentRange = clang.clang_Cursor_getCommentRange(cursor);

  // See if this comment and the last comment both point to the same source
  // range.
  if (lastCommentRange != null &&
      clang.clang_equalRanges(lastCommentRange!, currentCommentRange) != 0) {
    formattedDocComment = null;
  } else {
    switch (config.commentType.length) {
      case CommentLength.full:
        formattedDocComment = removeRawCommentMarkups(
            clang.clang_Cursor_getRawCommentText(cursor).toStringAndDispose());
        break;
      case CommentLength.brief:
        formattedDocComment = _wrapNoNewLineString(
            clang.clang_Cursor_getBriefCommentText(cursor).toStringAndDispose(),
            80 - indent);
        break;
      default:
        formattedDocComment = null;
    }
  }
  lastCommentRange = currentCommentRange;
  return formattedDocComment;
}

/// Wraps [string] according to given [lineWidth].
///
/// Wrapping will work properly only when String has no new lines
/// characters(\n).
String? _wrapNoNewLineString(String? string, int lineWidth) {
  if (string == null || string.isEmpty) {
    return null;
  }
  final sb = StringBuffer();

  final words = string.split(' ');

  sb.write(words[0]);
  var trackLineWidth = words[0].length;
  for (var i = 1; i < words.length; i++) {
    final word = words[i];
    if (trackLineWidth + word.length < lineWidth) {
      sb.write(' ');
      sb.write(word);
      trackLineWidth += word.length + 1;
    } else {
      sb.write('\n');
      sb.write(word);
      trackLineWidth = word.length;
    }
  }
  return sb.toString();
}

/// Removes /*, */ and any *'s in the beginning of a line.
String? removeRawCommentMarkups(String? string) {
  if (string == null || string.isEmpty) {
    return null;
  }
  final sb = StringBuffer();

  // Remove comment identifiers (`/** * */`, `///`, `//`) from lines.
  if (string.contains(RegExp(r'^\s*\/\*+'))) {
    string = string.replaceFirst(RegExp(r'^\s*\/\*+\s*'), '');
    string = string.replaceFirst(RegExp(r'\s*\*+\/$'), '');
    string.split('\n').forEach((element) {
      element = element.replaceFirst(RegExp(r'^\s*\**\s*'), '');
      sb.writeln(element);
    });
  } else if (string.contains(RegExp(r'^\s*\/\/\/?\s*'))) {
    string.split('\n').forEach((element) {
      element = element.replaceFirst(RegExp(r'^\s*\/\/\/?\s*'), '');
      sb.writeln(element);
    });
  }

  return sb.toString().trim();
}

extension CXTypeExt on clang_types.CXType {
  /// Get code_gen [Type] representation of [clang_types.CXType].
  Type toCodeGenType() {
    return getCodeGenType(this);
  }

  /// Spelling for a [clang_types.CXTypeKind], useful for debug purposes.
  String spelling() {
    return clang.clang_getTypeSpelling(this).toStringAndDispose();
  }

  /// Returns the typeKind int from [clang_types.CXTypeKind].
  int kind() {
    return this.kind;
  }

  String kindSpelling() {
    return clang.clang_getTypeKindSpelling(kind()).toStringAndDispose();
  }

  int alignment() {
    return clang.clang_Type_getAlignOf(this);
  }

  /// For debugging: returns [spelling] [kind] [kindSpelling].
  String completeStringRepr() {
    final s =
        '(Type) spelling: ${spelling()}, kind: ${kind()}, kindSpelling: ${kindSpelling()}';
    return s;
  }
}

extension CXStringExt on clang_types.CXString {
  /// Convert CXString to a Dart string
  ///
  /// Make sure to dispose CXstring using dispose method, or use the
  /// [toStringAndDispose] method.
  String string() {
    final cstring = clang.clang_getCString(this);
    if (cstring != nullptr) {
      return cstring.cast<Utf8>().toDartString();
    } else {
      return '';
    }
  }

  /// Converts CXString to dart string and disposes CXString.
  String toStringAndDispose() {
    // Note: clang_getCString_wrap returns a const char *, calling free will result in error.
    final s = string();
    clang.clang_disposeString(this);
    return s;
  }

  void dispose() {
    clang.clang_disposeString(this);
  }
}

/// Converts a [List<String>] to [Pointer<Pointer<Utf8>>].
Pointer<Pointer<Utf8>> createDynamicStringArray(List<String> list) {
  final nativeCmdArgs = calloc<Pointer<Utf8>>(list.length);

  for (var i = 0; i < list.length; i++) {
    nativeCmdArgs[i] = list[i].toNativeUtf8();
  }

  return nativeCmdArgs;
}

extension DynamicCStringArray on Pointer<Pointer<Utf8>> {
  // Properly disposes a Pointer<Pointer<Utf8>, ensure that sure length is correct.
  void dispose(int length) {
    for (var i = 0; i < length; i++) {
      calloc.free(this[i]);
    }
    calloc.free(this);
  }
}

class Stack<T> {
  final _stack = <T>[];

  T get top => _stack.last;
  T pop() => _stack.removeLast();
  void push(T item) => _stack.add(item);
}

class IncrementalNamer {
  final _incrementedStringCounters = <String, int>{};

  /// Appends `<int>` to base. <int> is incremented on every call.
  String name(String base) {
    var i = _incrementedStringCounters[base] ?? 0;
    i++;
    _incrementedStringCounters[base] = i;
    return '$base$i';
  }
}

class Macro {
  final String usr;
  final String? originalName;

  Macro(this.usr, this.originalName);
}

/// Tracks if a binding is 'seen' or not.
class BindingsIndex {
  // Tracks if bindings are already seen, Map key is USR obtained from libclang.
  final Map<String, Type> _declaredTypes = {};
  final Map<String, Func> _functions = {};
  final Map<String, Constant> _unnamedEnumConstants = {};
  final Map<String, String> _macros = {};
  final Map<String, Global> _globals = {};
  final Map<String, ObjCBlock> _objcBlocks = {};

  /// Contains usr for typedefs which cannot be generated.
  final Set<String> _unsupportedTypealiases = {};

  /// Index for headers.
  final Map<String, bool> _headerCache = {};

  bool isSeenType(String usr) => _declaredTypes.containsKey(usr);
  void addTypeToSeen(String usr, Type type) => _declaredTypes[usr] = type;
  Type? getSeenType(String usr) => _declaredTypes[usr];
  bool isSeenFunc(String usr) => _functions.containsKey(usr);
  void addFuncToSeen(String usr, Func func) => _functions[usr] = func;
  Func? getSeenFunc(String usr) => _functions[usr];
  bool isSeenUnnamedEnumConstant(String usr) =>
      _unnamedEnumConstants.containsKey(usr);
  void addUnnamedEnumConstantToSeen(String usr, Constant enumConstant) =>
      _unnamedEnumConstants[usr] = enumConstant;
  Constant? getSeenUnnamedEnumConstant(String usr) =>
      _unnamedEnumConstants[usr];
  bool isSeenGlobalVar(String usr) => _globals.containsKey(usr);
  void addGlobalVarToSeen(String usr, Global global) => _globals[usr] = global;
  Global? getSeenGlobalVar(String usr) => _globals[usr];
  bool isSeenMacro(String usr) => _macros.containsKey(usr);
  void addMacroToSeen(String usr, String macro) => _macros[usr] = macro;
  String? getSeenMacro(String usr) => _macros[usr];
  bool isSeenUnsupportedTypealias(String usr) =>
      _unsupportedTypealiases.contains(usr);
  void addUnsupportedTypealiasToSeen(String usr) =>
      _unsupportedTypealiases.add(usr);
  bool isSeenHeader(String source) => _headerCache.containsKey(source);
  void addHeaderToSeen(String source, bool includeStatus) =>
      _headerCache[source] = includeStatus;
  bool? getSeenHeaderStatus(String source) => _headerCache[source];
  void addObjCBlockToSeen(String key, ObjCBlock t) => _objcBlocks[key] = t;
  ObjCBlock? getSeenObjCBlock(String key) => _objcBlocks[key];
}

class CursorIndex {
  final _usrCursorDefinition = <String, clang_types.CXCursor>{};

  /// Returns the Cursor definition (if found) or itself.
  clang_types.CXCursor getDefinition(clang_types.CXCursor cursor) {
    final cursorDefinition = clang.clang_getCursorDefinition(cursor);
    if (clang.clang_Cursor_isNull(cursorDefinition) == 0) {
      return cursorDefinition;
    } else {
      final usr = cursor.usr();
      if (_usrCursorDefinition.containsKey(usr)) {
        return _usrCursorDefinition[cursor.usr()]!;
      } else {
        _logger.warning(
            "No definition found for declaration - ${cursor.completeStringRepr()}");
        return cursor;
      }
    }
  }

  /// Saves cursor definition based on its kind.
  void saveDefinition(clang_types.CXCursor cursor) {
    switch (cursor.kind) {
      case clang_types.CXCursorKind.CXCursor_StructDecl:
      case clang_types.CXCursorKind.CXCursor_UnionDecl:
      case clang_types.CXCursorKind.CXCursor_EnumDecl:
        final usr = cursor.usr();
        if (!_usrCursorDefinition.containsKey(usr)) {
          final cursorDefinition = clang.clang_getCursorDefinition(cursor);
          if (clang.clang_Cursor_isNull(cursorDefinition) == 0) {
            _usrCursorDefinition[usr] = cursorDefinition;
          } else {
            _logger.finest(
                "Missing cursor definition in current translation unit: ${cursor.completeStringRepr()}");
          }
        }
    }
  }
}

1	// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
2	// for details. All rights reserved. Use of this source code is governed by a
3	// BSD-style license that can be found in the LICENSE file.
4
5	import 'dart:ffi';
6
7	import 'package:ffi/ffi.dart';
8	import 'package:ffigen/src/code_generator.dart';
9	import 'package:ffigen/src/config_provider/config_types.dart';
10	import 'package:logging/logging.dart';
11
12	import 'clang_bindings/clang_bindings.dart' as clang_types;
13	import 'data.dart';
14	import 'type_extractor/extractor.dart';
15
16	final _logger = Logger('ffigen.header_parser.utils');	18✔
17
18	const exceptional_visitor_return =
19	clang_types.CXChildVisitResult.CXChildVisit_Break;
20
21	/// Check [resultCode] of [clang.clang_visitChildren_wrap].
22	///
23	/// Throws exception if resultCode is not [exceptional_visitor_return].
24	void visitChildrenResultChecker(int resultCode) {	31✔
25	if (resultCode != exceptional_visitor_return) {	31✔
26	throw Exception(	×
27	'Exception thrown in a dart function called via C, use --verbose to see more details');
28	}
29	}
30
31	/// Logs the warnings/errors returned by clang for a translation unit.
32	void logTuDiagnostics(	31✔
33	Pointer<clang_types.CXTranslationUnitImpl> tu, Logger logger, String header,
34	{Level logLevel = Level.SEVERE}) {
35	final total = clang.clang_getNumDiagnostics(tu);	62✔
36	if (total == 0) {	31✔
37	return;
38	}
39	logger.log(logLevel, 'Header $header: Total errors/warnings: $total.');	10✔
40	for (var i = 0; i < total; i++) {	10✔
41	final diag = clang.clang_getDiagnostic(tu, i);	10✔
42	final cxstring = clang.clang_formatDiagnostic(	10✔
43	diag,
44	clang_types
45	.CXDiagnosticDisplayOptions.CXDiagnostic_DisplaySourceLocation \|	5✔
46	clang_types.CXDiagnosticDisplayOptions.CXDiagnostic_DisplayColumn \|	5✔
47	clang_types
48	.CXDiagnosticDisplayOptions.CXDiagnostic_DisplayCategoryName,
49	);
50	logger.log(logLevel, ' ${cxstring.toStringAndDispose()}');	15✔
51	clang.clang_disposeDiagnostic(diag);	10✔
52	}
53	}
54
55	extension CXSourceRangeExt on Pointer<clang_types.CXSourceRange> {
56	void dispose() {	×
57	calloc.free(this);	×
58	}
59	}
60
61	extension CXCursorExt on clang_types.CXCursor {
62	String usr() {	31✔
63	return clang.clang_getCursorUSR(this).toStringAndDispose();	93✔
64	}
65
66	/// Returns the kind int from [clang_types.CXCursorKind].
67	int kind() {	31✔
68	return clang.clang_getCursorKind(this);	62✔
69	}
70
71	/// Name of the cursor (E.g function name, Struct name, Parameter name).
72	String spelling() {	31✔
73	return clang.clang_getCursorSpelling(this).toStringAndDispose();	93✔
74	}
75
76	/// Spelling for a [clang_types.CXCursorKind], useful for debug purposes.
77	String kindSpelling() {	31✔
78	return clang	31✔
79	.clang_getCursorKindSpelling(clang.clang_getCursorKind(this))	93✔
80	.toStringAndDispose();	31✔
81	}
82
83	/// for debug: returns [spelling] [kind] [kindSpelling] [type] [typeSpelling].
84	String completeStringRepr() {	31✔
85	final cxtype = type();	31✔
86	final s =
87	'(Cursor) spelling: ${spelling()}, kind: ${kind()}, kindSpelling: ${kindSpelling()}, type: ${cxtype.kind}, typeSpelling: ${cxtype.spelling()}, usr: ${usr()}';	217✔
88	return s;
89	}
90
91	/// Type associated with the pointer if any. Type will have kind
92	/// [clang.CXTypeKind.CXType_Invalid] otherwise.
93	clang_types.CXType type() {	31✔
94	return clang.clang_getCursorType(this);	62✔
95	}
96
97	/// Determine whether the given cursor
98	/// represents an anonymous record declaration.
99	bool isAnonymousRecordDecl() {	2✔
100	return clang.clang_Cursor_isAnonymousRecordDecl(this) == 1;	6✔
101	}
102
103	/// Only valid for [clang.CXCursorKind.CXCursor_FunctionDecl]. Type will have
104	/// kind [clang.CXTypeKind.CXType_Invalid] otherwise.
105	clang_types.CXType returnType() {	22✔
106	return clang.clang_getResultType(type());	66✔
107	}
108
109	/// Returns the file name of the file that the cursor is inside.
110	String sourceFileName() {	31✔
111	final cxsource = clang.clang_getCursorLocation(this);	62✔
112	final cxfilePtr = calloc<Pointer<Void>>();
113
114	// Puts the values in these pointers.
115	clang.clang_getFileLocation(cxsource, cxfilePtr, nullptr, nullptr, nullptr);	155✔
116	final s = clang.clang_getFileName(cxfilePtr.value).toStringAndDispose();	124✔
117
118	calloc.free(cxfilePtr);	31✔
119	return s;
120	}
121
122	/// Returns whether the file that the cursor is inside is a system header.
123	bool isInSystemHeader() {	×
124	final location = clang.clang_getCursorLocation(this);	×
125	return clang.clang_Location_isInSystemHeader(location) != 0;	×
126	}
127
128	/// Recursively print the AST, for debugging.
129	void printAst([int maxDepth = 3]) {	×
130	_printAstVisitorMaxDepth = maxDepth;
131	_printAstVisitor(this, this, Pointer<Void>.fromAddress(0));	×
132	}
133	}
134
135	Pointer<
136	NativeFunction<
137	Int32 Function(
138	clang_types.CXCursor, clang_types.CXCursor, Pointer<Void>)>>?
139	_printAstVisitorPtr;
140	int _printAstVisitorMaxDepth = 0;
141	int _printAstVisitor(clang_types.CXCursor cursor, clang_types.CXCursor parent,	×
142	Pointer<Void> clientData) {
143	final depth = clientData.address;	×
144	if (depth > _printAstVisitorMaxDepth) {	×
145	return clang_types.CXChildVisitResult.CXChildVisit_Break;
146	}
147	print((' ' * depth) + cursor.completeStringRepr());	×
148	clang.clang_visitChildren(	×
149	cursor,
150	_printAstVisitorPtr ??=
151	Pointer.fromFunction(_printAstVisitor, exceptional_visitor_return),
152	Pointer<Void>.fromAddress(depth + 1));	×
153	return clang_types.CXChildVisitResult.CXChildVisit_Continue;
154	}
155
156	const commentPrefix = '/// ';
157	const nesting = ' ';
158
159	/// Stores the [clang_types.CXSourceRange] of the last comment.
160	clang_types.CXSourceRange? lastCommentRange;
161
162	/// Returns a cursor's associated comment.
163	///
164	/// The given string is wrapped at line width = 80 - [indent]. The [indent] is
165	/// [commentPrefix.dimensions] by default because a comment starts with
166	/// [commentPrefix].
167	String? getCursorDocComment(clang_types.CXCursor cursor,	29✔
168	[int indent = commentPrefix.length]) {
169	String? formattedDocComment;
170	final currentCommentRange = clang.clang_Cursor_getCommentRange(cursor);	58✔
171
172	// See if this comment and the last comment both point to the same source
173	// range.
174	if (lastCommentRange != null &&
175	clang.clang_equalRanges(lastCommentRange!, currentCommentRange) != 0) {	81✔
176	formattedDocComment = null;
177	} else {
178	switch (config.commentType.length) {	87✔
179	case CommentLength.full:	29✔
180	formattedDocComment = removeRawCommentMarkups(	28✔
181	clang.clang_Cursor_getRawCommentText(cursor).toStringAndDispose());	84✔
182	break;
183	case CommentLength.brief:	2✔
184	formattedDocComment = _wrapNoNewLineString(	1✔
185	clang.clang_Cursor_getBriefCommentText(cursor).toStringAndDispose(),	3✔
186	80 - indent);	1✔
187	break;
188	default:
189	formattedDocComment = null;
190	}
191	}
192	lastCommentRange = currentCommentRange;
193	return formattedDocComment;
194	}
195
196	/// Wraps [string] according to given [lineWidth].
197	///
198	/// Wrapping will work properly only when String has no new lines
199	/// characters(\n).
200	String? _wrapNoNewLineString(String? string, int lineWidth) {	1✔
201	if (string == null \|\| string.isEmpty) {	1✔
202	return null;
203	}
204	final sb = StringBuffer();	1✔
205
206	final words = string.split(' ');	1✔
207
208	sb.write(words[0]);	2✔
209	var trackLineWidth = words[0].length;	2✔
210	for (var i = 1; i < words.length; i++) {	3✔
211	final word = words[i];	1✔
212	if (trackLineWidth + word.length < lineWidth) {	3✔
213	sb.write(' ');	1✔
214	sb.write(word);	1✔
215	trackLineWidth += word.length + 1;	3✔
216	} else {
217	sb.write('\n');	1✔
218	sb.write(word);	1✔
219	trackLineWidth = word.length;	1✔
220	}
221	}
222	return sb.toString();	1✔
223	}
224
225	/// Removes /, / and any *'s in the beginning of a line.
226	String? removeRawCommentMarkups(String? string) {	28✔
227	if (string == null \|\| string.isEmpty) {	28✔
228	return null;
229	}
230	final sb = StringBuffer();	7✔
231
232	// Remove comment identifiers (`/** * */`, `///`, `//`) from lines.
233	if (string.contains(RegExp(r'^\s\/\+'))) {	14✔
234	string = string.replaceFirst(RegExp(r'^\s\/\+\s*'), '');	10✔
235	string = string.replaceFirst(RegExp(r'\s\+\/$'), '');	10✔
236	string.split('\n').forEach((element) {	15✔
237	element = element.replaceFirst(RegExp(r'^\s\\s'), '');	10✔
238	sb.writeln(element);	5✔
239	});
240	} else if (string.contains(RegExp(r'^\s\/\/\/?\s'))) {	6✔
241	string.split('\n').forEach((element) {	9✔
242	element = element.replaceFirst(RegExp(r'^\s\/\/\/?\s'), '');	6✔
243	sb.writeln(element);	3✔
244	});
245	}
246
247	return sb.toString().trim();	14✔
248	}
249
250	extension CXTypeExt on clang_types.CXType {
251	/// Get code_gen [Type] representation of [clang_types.CXType].
252	Type toCodeGenType() {	29✔
253	return getCodeGenType(this);	29✔
254	}
255
256	/// Spelling for a [clang_types.CXTypeKind], useful for debug purposes.
257	String spelling() {	31✔
258	return clang.clang_getTypeSpelling(this).toStringAndDispose();	93✔
259	}
260
261	/// Returns the typeKind int from [clang_types.CXTypeKind].
262	int kind() {	30✔
263	return this.kind;	30✔
264	}
265
266	String kindSpelling() {	30✔
267	return clang.clang_getTypeKindSpelling(kind()).toStringAndDispose();	120✔
268	}
269
270	int alignment() {	24✔
271	return clang.clang_Type_getAlignOf(this);	48✔
272	}
273
274	/// For debugging: returns [spelling] [kind] [kindSpelling].
275	String completeStringRepr() {	30✔
276	final s =
277	'(Type) spelling: ${spelling()}, kind: ${kind()}, kindSpelling: ${kindSpelling()}';	120✔
278	return s;
279	}
280	}
281
282	extension CXStringExt on clang_types.CXString {
283	/// Convert CXString to a Dart string
284	///
285	/// Make sure to dispose CXstring using dispose method, or use the
286	/// [toStringAndDispose] method.
287	String string() {	31✔
288	final cstring = clang.clang_getCString(this);	62✔
289	if (cstring != nullptr) {	62✔
290	return cstring.cast<Utf8>().toDartString();	62✔
291	} else {
292	return '';
293	}
294	}
295
296	/// Converts CXString to dart string and disposes CXString.
297	String toStringAndDispose() {	31✔
298	// Note: clang_getCString_wrap returns a const char *, calling free will result in error.
299	final s = string();	31✔
300	clang.clang_disposeString(this);	62✔
301	return s;
302	}
303
304	void dispose() {	×
305	clang.clang_disposeString(this);	×
306	}
307	}
308
309	/// Converts a [List<String>] to [Pointer<Pointer<Utf8>>].
310	Pointer<Pointer<Utf8>> createDynamicStringArray(List<String> list) {	46✔
311	final nativeCmdArgs = calloc<Pointer<Utf8>>(list.length);	46✔
312
313	for (var i = 0; i < list.length; i++) {	138✔
314	nativeCmdArgs[i] = list[i].toNativeUtf8();	138✔
315	}
316
317	return nativeCmdArgs;
318	}
319
320	extension DynamicCStringArray on Pointer<Pointer<Utf8>> {
321	// Properly disposes a Pointer<Pointer<Utf8>, ensure that sure length is correct.
322	void dispose(int length) {	46✔
323	for (var i = 0; i < length; i++) {	92✔
324	calloc.free(this[i]);	92✔
325	}
326	calloc.free(this);	46✔
327	}
328	}
329
330	class Stack<T> {
331	final _stack = <T>[];
332
333	T get top => _stack.last;	84✔
334	T pop() => _stack.removeLast();	90✔
335	void push(T item) => _stack.add(item);	90✔
336	}
337
338	class IncrementalNamer {
339	final _incrementedStringCounters = <String, int>{};
340
341	/// Appends `<int>` to base. <int> is incremented on every call.
342	String name(String base) {	1✔
343	var i = _incrementedStringCounters[base] ?? 0;	2✔
344	i++;	1✔
345	_incrementedStringCounters[base] = i;	2✔
346	return '$base$i';	1✔
347	}
348	}
349
350	class Macro {
351	final String usr;
352	final String? originalName;
353
354	Macro(this.usr, this.originalName);	9✔
355	}
356
357	/// Tracks if a binding is 'seen' or not.
358	class BindingsIndex {
359	// Tracks if bindings are already seen, Map key is USR obtained from libclang.
360	final Map<String, Type> _declaredTypes = {};
361	final Map<String, Func> _functions = {};
362	final Map<String, Constant> _unnamedEnumConstants = {};
363	final Map<String, String> _macros = {};
364	final Map<String, Global> _globals = {};
365	final Map<String, ObjCBlock> _objcBlocks = {};
366
367	/// Contains usr for typedefs which cannot be generated.
368	final Set<String> _unsupportedTypealiases = {};
369
370	/// Index for headers.
371	final Map<String, bool> _headerCache = {};
372
373	bool isSeenType(String usr) => _declaredTypes.containsKey(usr);	78✔
374	void addTypeToSeen(String usr, Type type) => _declaredTypes[usr] = type;	78✔
375	Type? getSeenType(String usr) => _declaredTypes[usr];	81✔
376	bool isSeenFunc(String usr) => _functions.containsKey(usr);	72✔
377	void addFuncToSeen(String usr, Func func) => _functions[usr] = func;	66✔
378	Func? getSeenFunc(String usr) => _functions[usr];	3✔
379	bool isSeenUnnamedEnumConstant(String usr) =>	6✔
380	_unnamedEnumConstants.containsKey(usr);	12✔
381	void addUnnamedEnumConstantToSeen(String usr, Constant enumConstant) =>	4✔
382	_unnamedEnumConstants[usr] = enumConstant;	8✔
383	Constant? getSeenUnnamedEnumConstant(String usr) =>	×
384	_unnamedEnumConstants[usr];	×
385	bool isSeenGlobalVar(String usr) => _globals.containsKey(usr);	18✔
386	void addGlobalVarToSeen(String usr, Global global) => _globals[usr] = global;	12✔
387	Global? getSeenGlobalVar(String usr) => _globals[usr];	×
388	bool isSeenMacro(String usr) => _macros.containsKey(usr);	33✔
389	void addMacroToSeen(String usr, String macro) => _macros[usr] = macro;	27✔
390	String? getSeenMacro(String usr) => _macros[usr];	×
391	bool isSeenUnsupportedTypealias(String usr) =>	15✔
392	_unsupportedTypealiases.contains(usr);	30✔
393	void addUnsupportedTypealiasToSeen(String usr) =>	6✔
394	_unsupportedTypealiases.add(usr);	12✔
395	bool isSeenHeader(String source) => _headerCache.containsKey(source);	93✔
396	void addHeaderToSeen(String source, bool includeStatus) =>	31✔
397	_headerCache[source] = includeStatus;	62✔
398	bool? getSeenHeaderStatus(String source) => _headerCache[source];	93✔
399	void addObjCBlockToSeen(String key, ObjCBlock t) => _objcBlocks[key] = t;	6✔
400	ObjCBlock? getSeenObjCBlock(String key) => _objcBlocks[key];	6✔
401	}
402
403	class CursorIndex {
404	final _usrCursorDefinition = <String, clang_types.CXCursor>{};
405
406	/// Returns the Cursor definition (if found) or itself.
407	clang_types.CXCursor getDefinition(clang_types.CXCursor cursor) {	25✔
408	final cursorDefinition = clang.clang_getCursorDefinition(cursor);	50✔
409	if (clang.clang_Cursor_isNull(cursorDefinition) == 0) {	75✔
410	return cursorDefinition;
411	} else {
412	final usr = cursor.usr();	6✔
413	if (_usrCursorDefinition.containsKey(usr)) {	12✔
414	return _usrCursorDefinition[cursor.usr()]!;	3✔
415	} else {
416	_logger.warning(	10✔
417	"No definition found for declaration - ${cursor.completeStringRepr()}");	10✔
418	return cursor;
419	}
420	}
421	}
422
423	/// Saves cursor definition based on its kind.
424	void saveDefinition(clang_types.CXCursor cursor) {	31✔
425	switch (cursor.kind) {	31✔
426	case clang_types.CXCursorKind.CXCursor_StructDecl:	31✔
427	case clang_types.CXCursorKind.CXCursor_UnionDecl:	31✔
428	case clang_types.CXCursorKind.CXCursor_EnumDecl:	31✔
429	final usr = cursor.usr();	26✔
430	if (!_usrCursorDefinition.containsKey(usr)) {	54✔
431	final cursorDefinition = clang.clang_getCursorDefinition(cursor);	52✔
432	if (clang.clang_Cursor_isNull(cursorDefinition) == 0) {	78✔
433	_usrCursorDefinition[usr] = cursorDefinition;	54✔
434	} else {
435	_logger.finest(	8✔
436	"Missing cursor definition in current translation unit: ${cursor.completeStringRepr()}");	8✔
437	}
438	}
439	}
440	}
441	}

dart-lang / ffigen / 4364636722

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