[dart2js] Migrate dart2js_tools to null safety
Change-Id: I43186c26521eca6405d0ab8b3a50b545a91b5cc2
Issue: https://github.com/dart-lang/sdk/issues/46617
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/215013
Reviewed-by: Sigmund Cherem <sigmund@google.com>
Commit-Queue: Nicholas Shahan <nshahan@google.com>
diff --git a/.dart_tool/package_config.json b/.dart_tool/package_config.json
index 1c58ea1..ca074dc 100644
--- a/.dart_tool/package_config.json
+++ b/.dart_tool/package_config.json
@@ -220,7 +220,7 @@
"name": "dart2js_tools",
"rootUri": "../pkg/dart2js_tools",
"packageUri": "lib/",
- "languageVersion": "2.3"
+ "languageVersion": "2.12"
},
{
"name": "dart2native",
diff --git a/pkg/dart2js_tools/bin/deobfuscate.dart b/pkg/dart2js_tools/bin/deobfuscate.dart
index d6ba837..009357f 100644
--- a/pkg/dart2js_tools/bin/deobfuscate.dart
+++ b/pkg/dart2js_tools/bin/deobfuscate.dart
@@ -10,7 +10,7 @@
import 'package:dart2js_tools/src/util.dart';
import 'package:dart2js_tools/src/trace_decoder.dart';
-/// Script that deobuscates a stack-trace given in a text file.
+/// Script that deobfuscates a stack-trace given in a text file.
///
/// To run this script you need 3 or more files:
///
@@ -47,24 +47,24 @@
var sb = new StringBuffer();
try {
String obfuscatedTrace = new File(args[0]).readAsStringSync();
- String error = extractErrorMessage(obfuscatedTrace);
+ String? error = extractErrorMessage(obfuscatedTrace);
var provider = new CachingFileProvider(logger: Logger());
StackDeobfuscationResult result =
deobfuscateStack(obfuscatedTrace, provider);
Frame firstFrame = result.original.frames.first;
- String translatedError =
+ String? translatedError =
translate(error, provider.mappingFor(firstFrame.uri));
if (translatedError == null) translatedError = '<no error message found>';
printPadded(translatedError, error, sb);
int longest =
- result.deobfuscated.frames.fold(0, (m, f) => max(f.member.length, m));
+ result.deobfuscated.frames.fold(0, (m, f) => max(f.member!.length, m));
for (var originalFrame in result.original.frames) {
var deobfuscatedFrames = result.frameMap[originalFrame];
if (deobfuscatedFrames == null) {
printPadded('no mapping', '${originalFrame.location}', sb);
} else {
for (var frame in deobfuscatedFrames) {
- printPadded('${frame.member.padRight(longest)} ${frame.location}',
+ printPadded('${frame.member!.padRight(longest)} ${frame.location}',
'${originalFrame.location}', sb);
}
}
@@ -77,7 +77,7 @@
final green = stdout.hasTerminal ? '\x1b[32m' : '';
final none = stdout.hasTerminal ? '\x1b[0m' : '';
-printPadded(String mapping, String original, sb) {
+printPadded(String mapping, String? original, sb) {
var len = mapping.length;
var s = mapping.indexOf('\n');
if (s >= 0) len -= s + 1;
diff --git a/pkg/dart2js_tools/bin/lookup_name.dart b/pkg/dart2js_tools/bin/lookup_name.dart
index f2d5c1b..e14c503 100644
--- a/pkg/dart2js_tools/bin/lookup_name.dart
+++ b/pkg/dart2js_tools/bin/lookup_name.dart
@@ -1,7 +1,8 @@
import 'dart:io';
import 'dart:convert';
-import 'package:source_maps/source_maps.dart';
+
import 'package:dart2js_tools/src/dart2js_mapping.dart';
+import 'package:dart2js_tools/src/util.dart';
main(List<String> args) {
if (args.length < 2) {
@@ -16,7 +17,7 @@
exit(1);
}
var json = jsonDecode(sourcemapFile.readAsStringSync());
- Dart2jsMapping mapping = Dart2jsMapping(parseJson(json), json);
+ Dart2jsMapping mapping = Dart2jsMapping(parseSingleMapping(json), json);
var global = mapping.globalNames[name];
if (global != null) print('$name => $global (a global name)');
var instance = mapping.instanceNames[name];
diff --git a/pkg/dart2js_tools/bin/show_inline_data.dart b/pkg/dart2js_tools/bin/show_inline_data.dart
index cc3d5f0..235e380 100644
--- a/pkg/dart2js_tools/bin/show_inline_data.dart
+++ b/pkg/dart2js_tools/bin/show_inline_data.dart
@@ -22,11 +22,11 @@
var mapping = provider.mappingFor(uri);
var starts = functionStarts(provider.sourcesFor(uri));
var file = provider.fileFor(uri);
- var frames = mapping.frames;
+ var frames = mapping!.frames;
var offsets = frames.keys.toList()..sort();
var sb = new StringBuffer();
int depth = 0;
- int lastFunctionStart = null;
+ int? lastFunctionStart = null;
for (var offset in offsets) {
int functionStart = nextFunctionStart(starts, offset, lastFunctionStart);
if (lastFunctionStart == null || functionStart > lastFunctionStart) {
@@ -43,7 +43,7 @@
var pad = ' ' * offsetPrefix.length;
sb.write(offsetPrefix);
bool first = true;
- for (var frame in frames[offset]) {
+ for (var frame in frames[offset]!) {
if (!first) sb.write('$pad');
sb.write(' $frame\n');
first = false;
@@ -75,7 +75,7 @@
return result;
}
-int nextFunctionStart(List<int> starts, int offset, int last) {
+int nextFunctionStart(List<int> starts, int offset, int? last) {
int j = last ?? 0;
for (; j < starts.length && starts[j] <= offset; j++);
return j - 1;
diff --git a/pkg/dart2js_tools/lib/deobfuscate_stack_trace.dart b/pkg/dart2js_tools/lib/deobfuscate_stack_trace.dart
index 29a209e..4a43b6c 100644
--- a/pkg/dart2js_tools/lib/deobfuscate_stack_trace.dart
+++ b/pkg/dart2js_tools/lib/deobfuscate_stack_trace.dart
@@ -5,7 +5,7 @@
import 'package:dart2js_tools/src/util.dart';
import 'package:dart2js_tools/src/trace_decoder.dart';
-/// Deobuscates the given [obfuscatedTrace].
+/// Deobfuscates the given [obfuscatedTrace].
///
/// This method assumes a stack trace contains URIs normalized to be file URIs.
/// If for example you obtain a stack from a browser, you may need to preprocess
@@ -27,7 +27,7 @@
/// `//# sourceMappingURL=` line at the end, and load the corresponding
/// source-map file.
String deobfuscateStackTrace(String obfuscatedTrace) {
- String error = extractErrorMessage(obfuscatedTrace);
+ String? error = extractErrorMessage(obfuscatedTrace);
var provider = CachingFileProvider();
StackDeobfuscationResult result = deobfuscateStack(obfuscatedTrace, provider);
Frame firstFrame = result.original.frames.first;
@@ -38,14 +38,14 @@
var sb = StringBuffer();
sb.writeln(translatedError);
- maxMemberLengthHelper(int m, Frame f) => max(f.member.length, m);
+ maxMemberLengthHelper(int m, Frame f) => max(f.member!.length, m);
int longest = result.deobfuscated.frames.fold(0, maxMemberLengthHelper);
longest = result.original.frames.fold(longest, maxMemberLengthHelper);
for (var originalFrame in result.original.frames) {
var deobfuscatedFrames = result.frameMap[originalFrame];
if (deobfuscatedFrames == null) {
var name = originalFrame.member;
- sb.writeln(' at ${name.padRight(longest)} ${originalFrame.location}');
+ sb.writeln(' at ${name!.padRight(longest)} ${originalFrame.location}');
} else {
for (var frame in deobfuscatedFrames) {
var name = frame.member;
@@ -53,7 +53,7 @@
// client, we can start encoding the function name and remove this
// workaround.
if (name == '<unknown>') name = originalFrame.member;
- sb.writeln(' at ${name.padRight(longest)} ${frame.location}');
+ sb.writeln(' at ${name!.padRight(longest)} ${frame.location}');
}
}
}
diff --git a/pkg/dart2js_tools/lib/src/dart2js_mapping.dart b/pkg/dart2js_tools/lib/src/dart2js_mapping.dart
index ac6b9d7..6432aaa 100644
--- a/pkg/dart2js_tools/lib/src/dart2js_mapping.dart
+++ b/pkg/dart2js_tools/lib/src/dart2js_mapping.dart
@@ -23,38 +23,32 @@
final Map<String, String> globalNames = {};
final Map<String, String> instanceNames = {};
final Map<int, List<FrameEntry>> frames = {};
- List<int> _frameIndex;
- List<int> get frameIndex {
- if (_frameIndex == null) {
- _frameIndex = frames.keys.toList()..sort();
- }
- return _frameIndex;
- }
+ late final List<int> frameIndex = frames.keys.toList()..sort();
- Dart2jsMapping(this.sourceMap, Map json, {Logger logger}) {
+ Dart2jsMapping(this.sourceMap, Map json, {Logger? logger}) {
var extensions = json['x_org_dartlang_dart2js'];
if (extensions == null) return;
var minifiedNames = extensions['minified_names'];
if (minifiedNames != null) {
- _extractMinifedNames(
+ _extractMinifiedNames(
minifiedNames['global'], sourceMap, globalNames, logger);
- _extractMinifedNames(
+ _extractMinifiedNames(
minifiedNames['instance'], sourceMap, instanceNames, logger);
}
- String jsonFrames = extensions['frames'];
+ String? jsonFrames = extensions['frames'];
if (jsonFrames != null) {
new _FrameDecoder(jsonFrames).parseFrames(frames, sourceMap);
}
}
- Dart2jsMapping.json(Map json) : this(parseJson(json), json);
+ Dart2jsMapping.json(Map json) : this(parseSingleMapping(json), json);
}
class FrameEntry {
- final String callUri;
- final int callLine;
- final int callColumn;
- final String inlinedMethodName;
+ final String? callUri;
+ final int? callLine;
+ final int? callColumn;
+ final String? inlinedMethodName;
final bool isEmpty;
FrameEntry.push(
this.callUri, this.callLine, this.callColumn, this.inlinedMethodName)
@@ -76,7 +70,7 @@
}
const _marker = "\n//# sourceMappingURL=";
-Dart2jsMapping parseMappingFor(Uri uri, {Logger logger}) {
+Dart2jsMapping? parseMappingFor(Uri uri, {Logger? logger}) {
var file = new File.fromUri(uri);
if (!file.existsSync()) {
logger?.log('Error: no such file: $uri');
@@ -100,7 +94,7 @@
return null;
}
var json = jsonDecode(sourcemapFile.readAsStringSync());
- return new Dart2jsMapping(parseJson(json), json, logger: logger);
+ return new Dart2jsMapping(parseSingleMapping(json), json, logger: logger);
}
class _FrameDecoder implements Iterator<String> {
@@ -112,8 +106,9 @@
// Iterator API is used by decodeVlq to consume VLQ entries.
bool moveNext() => ++index < _length;
- String get current =>
- (index >= 0 && index < _length) ? _internal[index] : null;
+ String get current => (index >= 0 && index < _length)
+ ? _internal[index]
+ : throw StateError('No current value available.');
bool get hasTokens => index < _length - 1 && _length > 0;
@@ -150,8 +145,8 @@
}
}
-_extractMinifedNames(String encodedInput, SingleMapping sourceMap,
- Map<String, String> minifiedNames, Logger logger) {
+_extractMinifiedNames(String encodedInput, SingleMapping sourceMap,
+ Map<String, String> minifiedNames, Logger? logger) {
if (encodedInput.isEmpty) return;
List<String> input = encodedInput.split(',');
if (input.length % 2 != 0) {
@@ -159,7 +154,7 @@
}
for (int i = 0; i < input.length; i += 2) {
String minifiedName = input[i];
- int id = int.tryParse(input[i + 1]);
+ int id = int.parse(input[i + 1]);
minifiedNames[minifiedName] = sourceMap.names[id];
}
}
diff --git a/pkg/dart2js_tools/lib/src/name_decoder.dart b/pkg/dart2js_tools/lib/src/name_decoder.dart
index 306bead..862c7b4 100644
--- a/pkg/dart2js_tools/lib/src/name_decoder.dart
+++ b/pkg/dart2js_tools/lib/src/name_decoder.dart
@@ -9,8 +9,8 @@
import 'dart2js_mapping.dart';
import 'trace.dart';
-String translate(String error, Dart2jsMapping mapping,
- [StackTraceLine line, TargetEntry entry]) {
+String? translate(String? error, Dart2jsMapping? mapping,
+ [StackTraceLine? line, TargetEntry? entry]) {
for (var decoder in _errorMapDecoders) {
var result = decoder.decode(error, mapping, line, entry);
// More than one decoder might be applied on a single error message. This
@@ -30,10 +30,10 @@
/// Decode [error] that was reported in [line] and has a corresponding [entry]
/// in the source-map file. The provided [mapping] includes additional
/// minification data that may be used to decode the error message.
- String decode(String error, Dart2jsMapping mapping, StackTraceLine line,
- TargetEntry entry) {
+ String? decode(String? error, Dart2jsMapping? mapping, StackTraceLine? line,
+ TargetEntry? entry) {
if (error == null) return null;
- Match lastMatch = null;
+ Match? lastMatch = null;
var result = new StringBuffer();
for (var match in _matcher.allMatches(error)) {
var decodedMatch = _decodeInternal(match, mapping, line, entry);
@@ -49,8 +49,8 @@
return '$result';
}
- String _decodeInternal(Match match, Dart2jsMapping mapping,
- StackTraceLine line, TargetEntry entry);
+ String? _decodeInternal(Match match, Dart2jsMapping? mapping,
+ StackTraceLine? line, TargetEntry? entry);
}
typedef String ErrorDecoder(Match match, Dart2jsMapping mapping,
@@ -59,45 +59,45 @@
class MinifiedNameDecoder extends ErrorMapDecoder {
final RegExp _matcher = new RegExp("minified:([a-zA-Z0-9_\$]*)");
- String _decodeInternal(Match match, Dart2jsMapping mapping,
- StackTraceLine line, TargetEntry entry) {
+ String? _decodeInternal(Match match, Dart2jsMapping? mapping,
+ StackTraceLine? line, TargetEntry? entry) {
var minifiedName = match.group(1);
- return mapping.globalNames[minifiedName];
+ return mapping!.globalNames[minifiedName];
}
}
class CannotReadPropertyDecoder extends ErrorMapDecoder {
final RegExp _matcher = new RegExp("Cannot read property '([^']*)' of");
- String _decodeInternal(Match match, Dart2jsMapping mapping,
- StackTraceLine line, TargetEntry entry) {
+ String? _decodeInternal(Match match, Dart2jsMapping? mapping,
+ StackTraceLine? line, TargetEntry? entry) {
var minifiedName = match.group(1);
- var name = mapping.instanceNames[minifiedName];
+ var name = mapping!.instanceNames[minifiedName];
if (name == null) return null;
return "Cannot read property '$name' of";
}
}
abstract class NoSuchMethodDecoderBase extends ErrorMapDecoder {
- String _translateMinifiedName(Dart2jsMapping mapping, String minifiedName) {
+ String? _translateMinifiedName(Dart2jsMapping mapping, String? minifiedName) {
var name = mapping.instanceNames[minifiedName];
if (name != null) return "'$name'";
- if (minifiedName.startsWith(new RegExp(r'(call)?\$[0-9]'))) {
+ if (minifiedName!.startsWith(new RegExp(r'(call)?\$[0-9]'))) {
int first$ = minifiedName.indexOf(r'$');
return _expandCallSignature(minifiedName.substring(first$));
}
return null;
}
- String _expandCallSignature(String callSignature) {
+ String? _expandCallSignature(String callSignature) {
// Minified names are one of these forms:
// $0 // positional arguments only
// $1$2 // type parameters and positional arguments
// $3$name // positional and named arguments
// $1$3$name // type parameters and positional and named args
var signature = callSignature.split(r'$');
- var typeArgs = null;
- var totalArgs = null;
+ int? typeArgs = null;
+ int? totalArgs = null;
var namedArgs = <String>[];
for (var arg in signature) {
if (arg == "") continue;
@@ -115,6 +115,7 @@
namedArgs.add(arg);
}
}
+ if (totalArgs == null) return null;
var sb = new StringBuffer();
sb.write("'call'");
sb.write(" (with ");
@@ -136,11 +137,11 @@
final RegExp _matcher = new RegExp(
"NoSuchMethodError: method not found: '([^']*)'( on [^\\(]*)? \\(.*\\)");
- String _decodeInternal(Match match, Dart2jsMapping mapping,
- StackTraceLine line, TargetEntry entry) {
+ String? _decodeInternal(Match match, Dart2jsMapping? mapping,
+ StackTraceLine? line, TargetEntry? entry) {
var minifiedName = match.group(1);
var suffix = match.group(2) ?? '';
- var name = _translateMinifiedName(mapping, minifiedName);
+ var name = _translateMinifiedName(mapping!, minifiedName);
if (name == null) return null;
return "NoSuchMethodError: method not found: $name$suffix";
}
@@ -150,10 +151,10 @@
final RegExp _matcher =
new RegExp("NoSuchMethodError: method not found: '([^']*)'");
- String _decodeInternal(Match match, Dart2jsMapping mapping,
- StackTraceLine line, TargetEntry entry) {
+ String? _decodeInternal(Match match, Dart2jsMapping? mapping,
+ StackTraceLine? line, TargetEntry? entry) {
var minifiedName = match.group(1);
- var name = _translateMinifiedName(mapping, minifiedName);
+ var name = _translateMinifiedName(mapping!, minifiedName);
if (name == null) return null;
return "NoSuchMethodError: method not found: $name";
}
@@ -162,10 +163,10 @@
class UnhandledNotAFunctionError extends ErrorMapDecoder {
final RegExp _matcher = new RegExp("Error: ([^']*) is not a function");
- String _decodeInternal(Match match, Dart2jsMapping mapping,
- StackTraceLine line, TargetEntry entry) {
+ String? _decodeInternal(Match match, Dart2jsMapping? mapping,
+ StackTraceLine? line, TargetEntry? entry) {
var minifiedName = match.group(1);
- var name = mapping.instanceNames[minifiedName];
+ var name = mapping!.instanceNames[minifiedName];
if (name == null) return null;
return "Error: $name is not a function";
}
diff --git a/pkg/dart2js_tools/lib/src/sourcemap_helper.dart b/pkg/dart2js_tools/lib/src/sourcemap_helper.dart
index 68ffd94..cdbf85a 100644
--- a/pkg/dart2js_tools/lib/src/sourcemap_helper.dart
+++ b/pkg/dart2js_tools/lib/src/sourcemap_helper.dart
@@ -10,11 +10,10 @@
/// Search backwards in [sources] for a function declaration that includes the
/// [start] offset.
-TargetEntry findEnclosingFunction(FileProvider provider, Uri uri, int start) {
+TargetEntry? findEnclosingFunction(FileProvider provider, Uri uri, int start) {
String sources = provider.sourcesFor(uri);
- if (sources == null) return null;
SourceFile file = provider.fileFor(uri);
- SingleMapping mapping = provider.mappingFor(uri).sourceMap;
+ SingleMapping mapping = provider.mappingFor(uri)!.sourceMap;
var index = start;
while (true) {
index = nextDeclarationCandidate(sources, index);
@@ -22,7 +21,7 @@
var line = file.getLine(index);
var lineEntry = findLine(mapping, line);
var column = file.getColumn(index);
- TargetEntry result = findColumn(line, column, lineEntry);
+ TargetEntry? result = findColumn(line, column, lineEntry);
// If the name entry doesn't start exactly at the column corresponding to
// `index`, we must be in the middle of a string or code that uses the word
// "function", but that doesn't have a corresponding mapping. In those
@@ -61,7 +60,7 @@
/// number is lower or equal to [line].
///
/// Copied from [SingleMapping._findLine].
-TargetLineEntry findLine(SingleMapping sourceMap, int line) {
+TargetLineEntry? findLine(SingleMapping sourceMap, int line) {
int index = binarySearch(sourceMap.lines, (e) => e.line > line);
return (index <= 0) ? null : sourceMap.lines[index - 1];
}
@@ -73,7 +72,7 @@
/// the very last entry on that line.
///
/// Copied from [SingleMapping._findColumn].
-TargetEntry findColumn(int line, int column, TargetLineEntry lineEntry) {
+TargetEntry? findColumn(int line, int column, TargetLineEntry? lineEntry) {
if (lineEntry == null || lineEntry.entries.length == 0) return null;
if (lineEntry.line != line) return lineEntry.entries.last;
var entries = lineEntry.entries;
diff --git a/pkg/dart2js_tools/lib/src/trace.dart b/pkg/dart2js_tools/lib/src/trace.dart
index 846af16..07bdb1e 100644
--- a/pkg/dart2js_tools/lib/src/trace.dart
+++ b/pkg/dart2js_tools/lib/src/trace.dart
@@ -14,10 +14,10 @@
/// Represents a stack trace line.
class StackTraceLine {
- String methodName;
- String fileName;
- int lineNo;
- int columnNo;
+ final String? methodName;
+ final String fileName;
+ final int? lineNo;
+ final int columnNo;
StackTraceLine(this.methodName, this.fileName, this.lineNo, this.columnNo);
@@ -31,11 +31,11 @@
/// at <fileName>:<lineNo>
/// at <fileName>
///
- factory StackTraceLine.fromText(String text, {Logger logger}) {
+ factory StackTraceLine.fromText(String text, {Logger? logger}) {
text = text.trim();
assert(text.startsWith('at '));
text = text.substring('at '.length);
- String methodName;
+ String? methodName;
int endParen = text.indexOf(')');
if (endParen > 0) {
int nameEnd = text.indexOf('(');
@@ -46,16 +46,16 @@
logger?.log('Missing left-paren in: $text');
}
}
- int lineNo;
- int columnNo;
+ int? lineNo;
+ int? columnNo;
String fileName;
int lastColon = text.lastIndexOf(':');
if (lastColon != -1) {
- int lastValue = int.tryParse(text.substring(lastColon + 1));
+ int? lastValue = int.tryParse(text.substring(lastColon + 1));
if (lastValue != null) {
int secondToLastColon = text.lastIndexOf(':', lastColon - 1);
if (secondToLastColon != -1) {
- int secondToLastValue =
+ int? secondToLastValue =
int.tryParse(text.substring(secondToLastColon + 1, lastColon));
if (secondToLastValue != null) {
lineNo = secondToLastValue;
@@ -84,14 +84,14 @@
if (methodName != null) {
sb.write(methodName);
sb.write(' (');
- sb.write(fileName ?? '?');
+ sb.write(fileName);
sb.write(':');
sb.write(lineNo);
sb.write(':');
sb.write(columnNo);
sb.write(')');
} else {
- sb.write(fileName ?? '?');
+ sb.write(fileName);
sb.write(':');
sb.write(lineNo);
sb.write(':');
@@ -103,27 +103,27 @@
String get inlineString {
StringBuffer sb = new StringBuffer();
var padding = 20;
- if (methodName != null) {
- sb.write(methodName);
- padding -= (methodName.length);
+ var lineMethodName = methodName;
+ if (lineMethodName != null) {
+ sb.write(lineMethodName);
+ padding -= (lineMethodName.length);
if (padding <= 0) {
sb.write('\n');
padding = 20;
}
}
sb.write(' ' * padding);
- if (fileName != null) {
- sb.write(p.url.basename(fileName));
- sb.write(' ');
- sb.write(lineNo);
- sb.write(':');
- sb.write(columnNo);
- }
+ sb.write(p.url.basename(fileName));
+ sb.write(' ');
+ sb.write(lineNo);
+ sb.write(':');
+ sb.write(columnNo);
+
return sb.toString();
}
}
-List<StackTraceLine> parseStackTrace(String trace, {Logger logger}) {
+List<StackTraceLine> parseStackTrace(String trace, {Logger? logger}) {
List<String> lines = trace.split(new RegExp(r'(\r|\n|\r\n)'));
List<StackTraceLine> jsStackTrace = <StackTraceLine>[];
for (String line in lines) {
@@ -138,7 +138,7 @@
/// Returns the portion of the output that corresponds to the error message.
///
/// Note: some errors can span multiple lines.
-String extractErrorMessage(String trace) {
+String? extractErrorMessage(String trace) {
var firstStackFrame = trace.indexOf(new RegExp('\n +at'));
if (firstStackFrame == -1) return null;
var errorMarker = trace.indexOf('^') + 1;
diff --git a/pkg/dart2js_tools/lib/src/trace_decoder.dart b/pkg/dart2js_tools/lib/src/trace_decoder.dart
index 7ac12aa..6331bad 100644
--- a/pkg/dart2js_tools/lib/src/trace_decoder.dart
+++ b/pkg/dart2js_tools/lib/src/trace_decoder.dart
@@ -2,7 +2,7 @@
// 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.
-/// Logic to expand and deobuscate stack traces.
+/// Logic to expand and deobfuscate stack traces.
import 'package:stack_trace/stack_trace.dart';
import 'package:source_span/source_span.dart';
@@ -16,12 +16,12 @@
/// Representation of the obfuscated stack trace.
final Trace original;
- /// Representation of the deobfsucated stack trace.
+ /// Representation of the deobfuscated stack trace.
final Trace deobfuscated;
/// Details about how one original frame maps to deobfuscated frames. A single
/// frame might map to many frames (in the case of inlining), or to a null
- /// value (when we were unabled to deobfuscate it).
+ /// value (when we were unable to deobfuscate it).
final Map<Frame, List<Frame>> frameMap;
StackDeobfuscationResult(this.original, this.deobfuscated, this.frameMap);
@@ -35,22 +35,23 @@
var deobfuscatedFrames = <Frame>[];
var frameMap = <Frame, List<Frame>>{};
for (var frame in trace.frames) {
+ var frameLine = frame.line;
// If there's no line information, there's no way to translate this frame.
// We could return it as-is, but these lines are usually not useful anyways.
- if (frame.line == null) {
+ if (frameLine == null) {
continue;
}
// If there's no column, try using the first column of the line.
var column = frame.column ?? 1;
- Dart2jsMapping mapping = provider.mappingFor(frame.uri);
+ Dart2jsMapping? mapping = provider.mappingFor(frame.uri);
if (mapping == null) continue;
// Subtract 1 because stack traces use 1-indexed lines and columns and
// source maps uses 0-indexed.
- SourceSpan span = mapping.sourceMap
- .spanFor(frame.line - 1, column - 1, uri: frame.uri?.toString());
+ SourceSpan? span = mapping.sourceMap
+ .spanFor(frameLine - 1, column - 1, uri: frame.uri.toString());
// If we can't find a source span, ignore the frame. It's probably something
// internal that the user doesn't care about.
@@ -59,11 +60,11 @@
List<Frame> mappedFrames = frameMap[frame] = [];
SourceFile jsFile = provider.fileFor(frame.uri);
- int offset = jsFile.getOffset(frame.line - 1, column - 1);
+ int offset = jsFile.getOffset(frameLine - 1, column - 1);
String nameOf(id) =>
_normalizeName(id >= 0 ? mapping.sourceMap.names[id] : null);
- Uri fileName = span.sourceUrl;
+ Uri? fileName = span.sourceUrl;
int targetLine = span.start.line + 1;
int targetColumn = span.start.column + 1;
@@ -78,13 +79,13 @@
int depth = 0;
outer:
while (key >= 0) {
- for (var frame in frames[index[key]].reversed) {
+ for (var frame in frames[index[key]]!.reversed) {
if (frame.isEmpty) break outer;
if (frame.isPush) {
if (depth <= 0) {
- mappedFrames.add(new Frame(fileName, targetLine, targetColumn,
+ mappedFrames.add(new Frame(fileName!, targetLine, targetColumn,
_normalizeName(frame.inlinedMethodName) + "(inlined)"));
- fileName = Uri.parse(frame.callUri);
+ fileName = Uri.parse(frame.callUri!);
targetLine = (frame.callLine ?? 0) + 1;
targetColumn = (frame.callColumn ?? 0) + 1;
} else {
@@ -100,7 +101,8 @@
var functionEntry = findEnclosingFunction(provider, frame.uri, offset);
String methodName = nameOf(functionEntry?.sourceNameId ?? -1);
- mappedFrames.add(new Frame(fileName, targetLine, targetColumn, methodName));
+ mappedFrames
+ .add(new Frame(fileName!, targetLine, targetColumn, methodName));
deobfuscatedFrames.addAll(mappedFrames);
}
return new StackDeobfuscationResult(
@@ -109,6 +111,6 @@
/// Ensure we don't use spaces in method names. At this time, they are only
/// introduced by `<anonymous function>`.
-_normalizeName(String methodName) =>
+String _normalizeName(String? methodName) =>
methodName?.replaceAll("<anonymous function>", "<anonymous>") ??
'<unknown>';
diff --git a/pkg/dart2js_tools/lib/src/util.dart b/pkg/dart2js_tools/lib/src/util.dart
index 433ac5a..1a733ac 100644
--- a/pkg/dart2js_tools/lib/src/util.dart
+++ b/pkg/dart2js_tools/lib/src/util.dart
@@ -1,18 +1,19 @@
import 'dart:io';
+import 'package:source_maps/parser.dart';
import 'package:source_span/source_span.dart';
import 'dart2js_mapping.dart';
abstract class FileProvider {
String sourcesFor(Uri uri);
SourceFile fileFor(Uri uri);
- Dart2jsMapping mappingFor(Uri uri);
+ Dart2jsMapping? mappingFor(Uri uri);
}
class CachingFileProvider implements FileProvider {
final Map<Uri, String> _sources = {};
final Map<Uri, SourceFile> _files = {};
- final Map<Uri, Dart2jsMapping> _mappings = {};
- final Logger logger;
+ final Map<Uri, Dart2jsMapping?> _mappings = {};
+ final Logger? logger;
CachingFileProvider({this.logger});
@@ -22,7 +23,7 @@
SourceFile fileFor(Uri uri) =>
_files[uri] ??= new SourceFile.fromString(sourcesFor(uri));
- Dart2jsMapping mappingFor(Uri uri) =>
+ Dart2jsMapping? mappingFor(Uri uri) =>
_mappings[uri] ??= parseMappingFor(uri, logger: logger);
}
@@ -44,7 +45,7 @@
SourceFile fileFor(Uri uri) => super.fileFor(_localize(uri));
- Dart2jsMapping mappingFor(Uri uri) => super.mappingFor(_localize(uri));
+ Dart2jsMapping? mappingFor(Uri uri) => super.mappingFor(_localize(uri));
}
class Logger {
@@ -57,3 +58,5 @@
}
var logger = Logger();
+
+SingleMapping parseSingleMapping(Map json) => parseJson(json) as SingleMapping;
diff --git a/pkg/dart2js_tools/pubspec.yaml b/pkg/dart2js_tools/pubspec.yaml
index a6a46fe..392ed56 100644
--- a/pkg/dart2js_tools/pubspec.yaml
+++ b/pkg/dart2js_tools/pubspec.yaml
@@ -10,4 +10,4 @@
source_span: any
stack_trace: ^1.9.3
environment:
- sdk: '>=2.3.0 <3.0.0'
+ sdk: '>=2.12.0 <3.0.0'
