Updated merge_map

This commit is contained in:
thomashii 2021-09-12 08:03:13 +08:00
parent 4c9bc1c9be
commit 9cb60b0606
14 changed files with 146 additions and 90 deletions

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## About ## About
This repository contains the common utility packages required for developing backend framework. This repository contains the common utility packages required for developing dart backend framework.
## Available Packages ## Available Packages
* html_builder * Html Builder
* Code Buffer
* Combinator
* Merge Map
* Symbol Table

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# 2.0.2 # Change Log
## 3.0.0
* Upgraded from `pendantic` to `lints` linter
* Published as `belatuk_merge_map` package
* Fixed linter warnings
## 2.0.2
* Resolve static analysis warnings * Resolve static analysis warnings
# 2.0.1 ## 2.0.1
* Updated README * Updated README
# 2.0.0 ## 2.0.0
* Migrated to work with Dart SDK 2.12.x NNBD * Migrated to work with Dart SDK 2.12.x NNBD
# 1.0.2 ## 1.0.2
* Add an example, for Pub's sake. * Add an example, for Pub's sake.
# 1.0.1 ## 1.0.1
* Add a specific constraint on Dart versions, to prevent Pub from rejecting all packages that depend on * Add a specific constraint on Dart versions, to prevent Pub from rejecting all packages that depend on
`merge_map` (the entire Angel framework). `merge_map` (the entire Angel framework).
* Add generic type support * Add generic type support

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MIT License (MIT) BSD 3-Clause License
Copyright (c) 2021 dukefirehawk.com Copyright (c) 2021, dukefirehawk.com
All rights reserved.
Permission is hereby granted, free of charge, to any person obtaining a copy Redistribution and use in source and binary forms, with or without
of this software and associated documentation files (the "Software"), to deal modification, are permitted provided that the following conditions are met:
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all 1. Redistributions of source code must retain the above copyright notice, this
copies or substantial portions of the Software. list of conditions and the following disclaimer.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 2. Redistributions in binary form must reproduce the above copyright notice,
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, this list of conditions and the following disclaimer in the documentation
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE and/or other materials provided with the distribution.
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 3. Neither the name of the copyright holder nor the names of its
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE contributors may be used to endorse or promote products derived from
SOFTWARE. this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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# angel3_merge_map # Belatuk Merge Map
[![version](https://img.shields.io/badge/pub-v2.0.2-brightgreen)](https://pub.dartlang.org/packages/angel3_merge_map)
[![Null Safety](https://img.shields.io/badge/null-safety-brightgreen)](https://dart.dev/null-safety)
[![Gitter](https://img.shields.io/gitter/room/angel_dart/discussion)](https://gitter.im/angel_dart/discussion)
[![License](https://img.shields.io/github/license/dukefirehawk/angel)](https://github.com/dukefirehawk/angel/tree/angel3/packages/merge_map/LICENSE)
[![version](https://img.shields.io/badge/pub-v3.0.1-brightgreen)](https://pub.dartlang.org/packages/belatuk_merge_map)
[![Null Safety](https://img.shields.io/badge/null-safety-brightgreen)](https://dart.dev/null-safety)
[![License](https://img.shields.io/github/license/dart-backend/belatuk-common-utilities)](https://github.com/dart-backend/belatuk-common-utilities/packages/code_buffer/LICENSE)
**Replacement of `package:merge_map` with breaking changes to support NNBD.**
Combine multiple Maps into one. Equivalent to Combine multiple Maps into one. Equivalent to
[Object.assign](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign) [Object.assign](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign)
in JS. in JS.
# Example ## Example
```dart ```dart
import "package:angel3_merge_map/angel3_merge_map.dart"; import "package:belatuk_merge_map/belatuk_merge_map.dart";
void main() { void main() {
Map map1 = {'hello': 'world'}; Map map1 = {'hello': 'world'};

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include: package:pedantic/analysis_options.yaml include: package:lints/recommended.yaml
analyzer:
strong-mode:
implicit-casts: false

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import 'package:angel3_merge_map/angel3_merge_map.dart'; import 'package:belatuk_merge_map/belatuk_merge_map.dart';
void main() { void main() {
// ignore: omit_local_variable_types // ignore: omit_local_variable_types

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library angel3_merge_map; library angel3_merge_map;
dynamic _copyValues<K, V>( dynamic _copyValues<K, V>(
Map<K, V> from, Map<K, V?>? to, bool recursive, bool acceptNull) { Map<K, V> from, Map<K, V?> to, bool recursive, bool acceptNull) {
for (var key in from.keys) { for (var key in from.keys) {
if (from[key] is Map<K, V> && recursive) { if (from[key] is Map<K, V> && recursive) {
if (!(to![key] is Map<K, V>)) { if (to[key] is! Map<K, V>) {
to[key] = <K, V>{} as V; to[key] = <K, V>{} as V;
} }
_copyValues(from[key] as Map, to[key] as Map?, recursive, acceptNull); _copyValues(from[key] as Map, to[key] as Map, recursive, acceptNull);
} else { } else {
if (from[key] != null || acceptNull) to![key] = from[key]; if (from[key] != null || acceptNull) {
to[key] = from[key];
}
} }
} }
} }
@ -27,8 +29,8 @@ dynamic _copyValues<K, V>(
Map<K, V> mergeMap<K, V>(Iterable<Map<K, V>> maps, Map<K, V> mergeMap<K, V>(Iterable<Map<K, V>> maps,
{bool recursive = true, bool acceptNull = false}) { {bool recursive = true, bool acceptNull = false}) {
var result = <K, V>{}; var result = <K, V>{};
maps.forEach((Map<K, V> map) { for (var map in maps) {
_copyValues(map, result, recursive, acceptNull); _copyValues(map, result, recursive, acceptNull);
}); }
return result; return result;
} }

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name: angel3_merge_map name: belatuk_merge_map
version: 2.0.2 version: 3.0.0
description: Combine multiple Maps into one. Equivalent to Object.assign in JS. description: Combine multiple Maps into one. Equivalent to Object.assign in JS.
homepage: https://github.com/dukefirehawk/angel/tree/angel3/packages/merge_map homepage: https://github.com/dart-backend/belatuk-common-utilities/tree/main/packages/merge_map
environment: environment:
sdk: '>=2.12.0 <3.0.0' sdk: '>=2.12.0 <3.0.0'
dev_dependencies: dev_dependencies:
test: ^1.17.4 test: ^1.17.4
pedantic: ^1.11.0 lints: ^1.0.0

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import 'package:angel3_merge_map/angel3_merge_map.dart'; import 'package:belatuk_merge_map/belatuk_merge_map.dart';
import 'package:test/test.dart'; import 'package:test/test.dart';
void main() { void main() {

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# 2.0.2 # Change Log
## 3.0.0
* Upgraded from `pendantic` to `lints` linter
* Published as `belatuk_symbol_table` package
## 2.0.2
* Resolved static analysis warnings * Resolved static analysis warnings
# 2.0.1 ## 2.0.1
* Resolved static analysis warnings * Resolved static analysis warnings
# 2.0.0 ## 2.0.0
* Migrated to work with Dart SDK 2.12.x NNBD * Migrated to work with Dart SDK 2.12.x NNBD
## 1.0.4 ## 1.0.4
* Added `context` to `SymbolTable`. * Added `context` to `SymbolTable`.
## 1.0.3 ## 1.0.3
* Converted `Visibility` into a `Comparable` class. * Converted `Visibility` into a `Comparable` class.
* Renamed `add` -> `create`, `put` -> `assign`, and `allVariablesOfVisibility` -> `allVariablesWithVisibility`. * Renamed `add` -> `create`, `put` -> `assign`, and `allVariablesOfVisibility` -> `allVariablesWithVisibility`.
* Added tests for `Visibility` comparing, and `depth`. * Added tests for `Visibility` comparing, and `depth`.
@ -18,6 +30,7 @@
* Fixed a typo in `remove` that would have prevented it from working correctly. * Fixed a typo in `remove` that would have prevented it from working correctly.
## 1.0.2 ## 1.0.2
* Added `depth` to `SymbolTable`. * Added `depth` to `SymbolTable`.
* Added `symbolTable` to `Variable`. * Added `symbolTable` to `Variable`.
* Deprecated the redundant `Constant` class. * Deprecated the redundant `Constant` class.

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MIT License (MIT) BSD 3-Clause License
Copyright (c) 2021 dukefirehawk.com Copyright (c) 2021, dukefirehawk.com
All rights reserved.
Permission is hereby granted, free of charge, to any person obtaining a copy Redistribution and use in source and binary forms, with or without
of this software and associated documentation files (the "Software"), to deal modification, are permitted provided that the following conditions are met:
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all 1. Redistributions of source code must retain the above copyright notice, this
copies or substantial portions of the Software. list of conditions and the following disclaimer.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 2. Redistributions in binary form must reproduce the above copyright notice,
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, this list of conditions and the following disclaimer in the documentation
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE and/or other materials provided with the distribution.
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 3. Neither the name of the copyright holder nor the names of its
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE contributors may be used to endorse or promote products derived from
SOFTWARE. this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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# angel3_symbol_table # Belatuk Merge Map
[![version](https://img.shields.io/badge/pub-v2.0.2-brightgreen)](https://pub.dartlang.org/packages/angel3_symbol_table)
[![version](https://img.shields.io/badge/pub-v3.0.0-brightgreen)](https://pub.dartlang.org/packages/belatuk_symbol_table)
[![Null Safety](https://img.shields.io/badge/null-safety-brightgreen)](https://dart.dev/null-safety) [![Null Safety](https://img.shields.io/badge/null-safety-brightgreen)](https://dart.dev/null-safety)
[![Gitter](https://img.shields.io/gitter/room/angel_dart/discussion)](https://gitter.im/angel_dart/discussion) [![Gitter](https://img.shields.io/gitter/room/angel_dart/discussion)](https://gitter.im/angel_dart/discussion)
@ -9,7 +10,8 @@ A generic symbol table implementation in Dart, with support for scopes and const
The symbol tables produced by this package are hierarchical (in this case, tree-shaped), The symbol tables produced by this package are hierarchical (in this case, tree-shaped),
and utilize basic memoization to speed up repeated lookups. and utilize basic memoization to speed up repeated lookups.
# Variables ## Variables
To represent a symbol, use `Variable`. I opted for the name To represent a symbol, use `Variable`. I opted for the name
`Variable` to avoid conflict with the Dart primitive `Symbol`. `Variable` to avoid conflict with the Dart primitive `Symbol`.
@ -28,6 +30,7 @@ foo.value = 'baz'; // Also throws a StateError - Once a variable is locked, it c
``` ```
## Visibility ## Visibility
Variables are *public* by default, but can also be marked as *private* or *protected*. This can be helpful if you are trying Variables are *public* by default, but can also be marked as *private* or *protected*. This can be helpful if you are trying
to determine which symbols should be exported from a library or class. to determine which symbols should be exported from a library or class.
@ -36,7 +39,8 @@ myVariable.visibility = Visibility.protected;
myVariable.visibility = Visibility.private; myVariable.visibility = Visibility.private;
``` ```
# Symbol Tables ## Symbol Tables
It's easy to create a basic symbol table: It's easy to create a basic symbol table:
```dart ```dart
@ -66,7 +70,8 @@ var symbol = doubles.resolveOrCreate('one', value: 1.0);
var symbol = doubles.resolveOrCreate('one', value: 1.0, constant: true); var symbol = doubles.resolveOrCreate('one', value: 1.0, constant: true);
``` ```
# Exporting Symbols ## Exporting Symbols
Due to the tree structure of symbol tables, it is extremely easy to Due to the tree structure of symbol tables, it is extremely easy to
extract a linear list of distinct variables, with variables lower in the hierarchy superseding their parents extract a linear list of distinct variables, with variables lower in the hierarchy superseding their parents
(effectively accomplishing variable shadowing). (effectively accomplishing variable shadowing).
@ -83,15 +88,17 @@ var exportedSymbols = mySymbolTable.allPublicVariables;
``` ```
It's easy to extract symbols of a given visibility: It's easy to extract symbols of a given visibility:
```dart ```dart
var exportedSymbols = mySymbolTable.allVariablesWithVisibility(Visibility.protected); var exportedSymbols = mySymbolTable.allVariablesWithVisibility(Visibility.protected);
``` ```
# Child Scopes ## Child Scopes
There are three ways to create a new symbol table: There are three ways to create a new symbol table:
### Regular Children
## Regular Children
This is what most interpreters need; it simply creates a symbol table with the current symbol table This is what most interpreters need; it simply creates a symbol table with the current symbol table
as its parent. The new scope can define its own symbols, which will only shadow the ancestors within the as its parent. The new scope can define its own symbols, which will only shadow the ancestors within the
correct scope. correct scope.
@ -101,18 +108,21 @@ var child = mySymbolTable.createChild();
var child = mySymbolTable.createChild(values: {...}); var child = mySymbolTable.createChild(values: {...});
``` ```
### Depth #### Depth
Every symbol table has an associated `depth` attached to it, with the `depth` at the root Every symbol table has an associated `depth` attached to it, with the `depth` at the root
being `0`. When `createChild` is called, the resulting child has an incremented `depth`. being `0`. When `createChild` is called, the resulting child has an incremented `depth`.
## Clones ### Clones
This creates a scope at the same level as the current one, with all the same variables. This creates a scope at the same level as the current one, with all the same variables.
```dart ```dart
var clone = mySymbolTable.clone(); var clone = mySymbolTable.clone();
``` ```
## Forked Scopes ### Forked Scopes
If you are implementing a language with closure functions, you might consider looking into this. If you are implementing a language with closure functions, you might consider looking into this.
A forked scope is a scope identical to the current one, but instead of merely copying references A forked scope is a scope identical to the current one, but instead of merely copying references
to variables, the values of variables are copied into new ones. to variables, the values of variables are copied into new ones.
@ -128,7 +138,8 @@ var forked = mySymbolTable.fork();
var forked = mySymbolTable.fork(values: {...}); var forked = mySymbolTable.fork(values: {...});
``` ```
# Creating Names ## Creating Names
In languages with block scope, oftentimes, identifiers will collide within a global scope. In languages with block scope, oftentimes, identifiers will collide within a global scope.
To avoid this, symbol tables expose a `uniqueName()` method that simply attaches a numerical suffix to To avoid this, symbol tables expose a `uniqueName()` method that simply attaches a numerical suffix to
an input name. The name is guaranteed to never be repeated within a specific scope. an input name. The name is guaranteed to never be repeated within a specific scope.
@ -139,7 +150,8 @@ var name1 = mySymbolTable.uniqueName('foo'); // foo1
var name2 = mySymbolTable.uniqueName('foo'); // foo2 var name2 = mySymbolTable.uniqueName('foo'); // foo2
``` ```
# `this` Context ## `this` Context
Many languages handle a sort of `this` context that values within a scope may Many languages handle a sort of `this` context that values within a scope may
optionally be resolved against. Symbol tables can easily set their context optionally be resolved against. Symbol tables can easily set their context
as follows: as follows:

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include: package:pedantic/analysis_options.yaml include: package:lints/recommended.yaml
analyzer:
strong-mode:
implicit-casts: false

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name: angel3_symbol_table name: belatuk_symbol_table
version: 2.0.2 version: 3.0.0
description: A generic symbol table implementation in Dart, with support for scopes and constants. description: A generic symbol table implementation in Dart, with support for scopes and constants.
homepage: https://github.com/dukefirehawk/angel/tree/angel3/packages/symbol_table homepage: https://github.com/dart-backend/belatuk-common-utilities/tree/main/packages/symbol_table
environment: environment:
sdk: '>=2.12.0 <3.0.0' sdk: '>=2.12.0 <3.0.0'
dependencies: dependencies:
collection: ^1.15.0 collection: ^1.15.0
dev_dependencies: dev_dependencies:
test: ^1.17.4 test: ^1.17.4
pedantic: ^1.11.0 lints: ^1.0.0