Reorganize the grammar to fit TypeScript #4
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WalkthroughThe changes involve the complete removal of the old schema files related to ANTLR grammar, lexer, parser, and associated components for a schema language, specifically Changes
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Actionable comments posted: 15
🧹 Outside diff range and nitpick comments (10)
antlr/YorkieSchema.tokens (2)
31-35: Named tokens are well-defined, but consider adding a comment token.The essential named tokens (Identifier, StringLiteral, NumberLiteral, BooleanLiteral, and WS) are correctly defined with unique integer values. These cover the basic language constructs needed for parsing.
However, there's no explicit token for comments. Consider adding a
Commenttoken to handle single-line or multi-line comments in your schema language.
58-65: Yorkie-specific tokens are well-defined, consider adding documentation.The inclusion of Yorkie-specific tokens ('yorkie.Object', 'yorkie.Array', 'yorkie.Counter', 'yorkie.Text', 'yorkie.Tree') indicates that the schema language is tailored for use with the Yorkie framework. The presence of '<', '>', and 'extends' tokens suggests support for generics and inheritance.
To improve clarity and ease of use:
- Consider adding comments or documentation explaining the purpose and usage of these Yorkie-specific types.
- Ensure that comprehensive documentation for these custom types is available in the project's main documentation.
This will help users understand how to properly use these types in their schemas.
antlr/YorkieSchemaLexer.tokens (3)
1-35: LGTM! Consider adding comments for clarity.The generic tokens (T__0 to T__29) and essential tokens (Identifier, StringLiteral, NumberLiteral, BooleanLiteral, WS) are correctly defined with consistent numbering. This provides a solid foundation for the lexer.
Consider adding comments to explain the purpose of the generic tokens (T__0 to T__29) for better maintainability. For example:
// Generic tokens for specific language constructs T__0=1 T__1=2 ...
58-62: LGTM! Yorkie-specific tokens are well-defined.The Yorkie-specific tokens ('yorkie.Object', 'yorkie.Array', 'yorkie.Counter', 'yorkie.Text', 'yorkie.Tree') are correctly defined and associated with their corresponding generic token numbers. The naming convention using the 'yorkie.' prefix is consistent and clear.
Consider grouping these Yorkie-specific tokens together at the end of the file for better organization and easier maintenance. This would involve moving lines 58-62 to the end of the file, just before the 'extends' token. For example:
... '<'=28 '>'=29 'yorkie.Object'=23 'yorkie.Array'=24 'yorkie.Counter'=25 'yorkie.Text'=26 'yorkie.Tree'=27 'extends'=30This grouping would make it easier to add or modify Yorkie-specific tokens in the future.
1-65: Overall, excellent token definitions for YorkieSchemaLexer.The
YorkieSchemaLexer.tokensfile provides a comprehensive and well-structured set of token definitions for parsing Yorkie schema language. It includes all necessary elements for a TypeScript-like language with Yorkie-specific extensions. The token numbering is consistent, and both named and literal tokens are correctly defined.To further improve the file, consider adding a brief header comment explaining the purpose of this file and its role in the Yorkie schema parsing process. For example:
# YorkieSchemaLexer.tokens # This file defines the tokens used by the YorkieSchemaLexer for parsing Yorkie schema language. # It includes both generic language constructs and Yorkie-specific tokens. T__0=1 ...This addition would provide valuable context for developers who may be new to the project or unfamiliar with ANTLR token files.
antlr/YorkieSchema.g4 (2)
130-130: Enhance 'StringLiteral' to handle escape sequencesThe current
StringLiteralrule does not support escape sequences like\n,\", etc. If you intend to allow escape characters within strings, you should modify the lexer rule to accommodate them.Suggested modification:
-StringLiteral: '"' (~["\r\n])* '"'; +StringLiteral: '"' ( '\\' . | ~["\\\r\n] )* '"';This change allows the lexer to recognize escape sequences inside strings.
131-131: Extend 'NumberLiteral' to support negative numbers and exponentsThe
NumberLiteralrule currently matches positive integers and decimals. If your schema language requires support for negative numbers or scientific notation, consider enhancing this rule.Possible enhancement:
-NumberLiteral: [0-9]+('.'[0-9]+)?; +NumberLiteral: '-'? [0-9]+ ('.' [0-9]+)? ([eE][+-]?[0-9]+)?;This modification adds support for negative numbers and exponential notation.
antlr/YorkieSchema.interp (1)
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1-208: Suggestion: Exclude generated parser files from version controlThe file
YorkieSchema.interpappears to be a generated file by ANTLR, containing parser configurations and Abstract Syntax Tree (ATN) data. Including generated files in version control can lead to unnecessary merge conflicts, increase repository size, and may cause inconsistencies if the grammar changes but the generated files are not updated.Consider adding
*.interpfiles to your.gitignoreand excluding them from the repository. This ensures that all developers generate the parser files locally, reducing the risk of inconsistencies and keeping the repository clean.antlr/YorkieSchemaLexer.interp (1)
1-122: Consider Excluding Generated Files from Version ControlThe file
YorkieSchemaLexer.interpappears to be a generated file produced by ANTLR. Including generated files in version control can lead to unnecessary repository bloat and potential merge conflicts when regenerating the parser. It's generally recommended to exclude such files from version control by adding them to.gitignoreand regenerating them as part of the build process.antlr/YorkieSchemaLexer.ts (1)
1-249: Consider excluding generated code from version controlIncluding generated files like
YorkieSchemaLexer.tsin version control can lead to larger repository sizes and potential merge conflicts. It is a common best practice to exclude such files from the repository and instead generate them as part of the build process. This ensures consistency and reduces the chances of discrepancies between the codebase and generated artifacts.
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📒 Files selected for processing (21)
- antlr/Schema.g4 (0 hunks)
- antlr/Schema.interp (0 hunks)
- antlr/Schema.tokens (0 hunks)
- antlr/SchemaLexer.interp (0 hunks)
- antlr/SchemaLexer.tokens (0 hunks)
- antlr/SchemaLexer.ts (0 hunks)
- antlr/SchemaListener.ts (0 hunks)
- antlr/SchemaParser.ts (0 hunks)
- antlr/SchemaVisitor.ts (0 hunks)
- antlr/YorkieSchema.g4 (1 hunks)
- antlr/YorkieSchema.interp (1 hunks)
- antlr/YorkieSchema.tokens (1 hunks)
- antlr/YorkieSchemaLexer.interp (1 hunks)
- antlr/YorkieSchemaLexer.tokens (1 hunks)
- antlr/YorkieSchemaLexer.ts (1 hunks)
- antlr/YorkieSchemaListener.ts (1 hunks)
- antlr/YorkieSchemaParser.ts (1 hunks)
- antlr/YorkieSchemaVisitor.ts (1 hunks)
- package.json (1 hunks)
- src/validator.ts (3 hunks)
- test/schema.test.ts (1 hunks)
💤 Files with no reviewable changes (9)
- antlr/Schema.g4
- antlr/Schema.interp
- antlr/Schema.tokens
- antlr/SchemaLexer.interp
- antlr/SchemaLexer.tokens
- antlr/SchemaLexer.ts
- antlr/SchemaListener.ts
- antlr/SchemaParser.ts
- antlr/SchemaVisitor.ts
🧰 Additional context used
🪛 Biome
antlr/YorkieSchemaParser.ts
[error] 1293-1295: This constructor is unnecessary.
Unsafe fix: Remove the unnecessary constructor.
(lint/complexity/noUselessConstructor)
[error] 1340-1342: This constructor is unnecessary.
Unsafe fix: Remove the unnecessary constructor.
(lint/complexity/noUselessConstructor)
[error] 1375-1377: This constructor is unnecessary.
Unsafe fix: Remove the unnecessary constructor.
(lint/complexity/noUselessConstructor)
[error] 1411-1413: This constructor is unnecessary.
Unsafe fix: Remove the unnecessary constructor.
(lint/complexity/noUselessConstructor)
[error] 1447-1449: This constructor is unnecessary.
Unsafe fix: Remove the unnecessary constructor.
(lint/complexity/noUselessConstructor)
[error] 1479-1481: This constructor is unnecessary.
Unsafe fix: Remove the unnecessary constructor.
(lint/complexity/noUselessConstructor)
[error] 1511-1513: This constructor is unnecessary.
Unsafe fix: Remove the unnecessary constructor.
(lint/complexity/noUselessConstructor)
[error] 1549-1551: This constructor is unnecessary.
Unsafe fix: Remove the unnecessary constructor.
(lint/complexity/noUselessConstructor)
🔇 Additional comments (17)
antlr/YorkieSchema.tokens (3)
1-30: Generic tokens are correctly defined.The generic tokens (T__0 to T__29) are properly defined with unique integer values from 1 to 30. This is a standard practice in ANTLR for handling literals without specific names.
36-57: Comprehensive set of keyword and operator tokens enabling rich language features.The defined tokens cover a wide range of programming language constructs, indicating a feature-rich schema language. Notable inclusions:
- Type system support: 'type', ':', '|' (union types), '&' (intersection types)
- Variable declarations: 'let'
- Basic types: 'number', 'string', 'boolean', 'any', 'void', 'null', 'undefined'
- Function-like constructs: '=>' (arrow notation)
- Various brackets and operators for complex expressions
This token set allows for a expressive and flexible schema definition language.
1-65: Overall, well-defined and comprehensive token set for YorkieSchema.The
YorkieSchema.tokensfile provides a robust foundation for a schema language tailored to the Yorkie framework. The token definitions are correct, well-structured, and cover a wide range of language constructs, enabling a rich and flexible schema definition language.Key strengths:
- Comprehensive coverage of common programming language constructs
- Support for advanced type system features (union types, intersection types)
- Integration of Yorkie-specific types
Suggestions for improvement:
- Add a token for comments to support documentation within schemas
- Provide documentation or comments explaining the purpose and usage of Yorkie-specific types
These minor enhancements would further improve the usability and clarity of the schema language.
antlr/YorkieSchemaLexer.tokens (1)
36-65: LGTM! Comprehensive set of keywords and operators.The defined set of keywords and operators is comprehensive and covers all essential elements for a robust type system. This includes:
- Type-related keywords: 'type', 'number', 'string', 'boolean', 'any', 'void', 'null', 'undefined', 'extends'
- Variable declaration: 'let'
- Operators for type definitions and structures: '=', ':', '|', '&', '[', ']', '{', '}', '(', ')', '=>', ',', '<', '>'
The token associations are correct and consistent with the generic token numbering.
antlr/YorkieSchemaVisitor.ts (1)
41-223: LGTM!The interface
YorkieSchemaVisitoris well-defined, and all visitor methods are properly declared and documented. The structure follows the ANTLR visitor pattern and adheres to TypeScript best practices.antlr/YorkieSchemaLexer.interp (3)
121-122: Verify the Correctness of the ATN DefinitionThe
atndefinition at lines 121-122 contains a long sequence of numbers representing the Abstract Syntax Tree. It's crucial to ensure that this ATN is correctly generated and corresponds accurately to the lexer rules defined. An incorrect ATN can lead to parsing errors or unexpected behavior.
2-2:⚠️ Potential issuePotential Issue with 'null' Entries in Token Literal Names
The
token literal namessection containsnullentries at lines 2 and 33-37. This may indicate missing token literals or placeholders that should be replaced with actual token values. Please verify if thesenullentries are intentional or if they need to be updated with the correct literals.Also applies to: 33-37
40-70:⚠️ Potential issueAll Token Symbolic Names Are 'null'
In the
token symbolic namessection (lines 40-70), all entries are set tonull. This suggests that symbolic names for these tokens may be missing or not properly defined. It's important for each token to have a corresponding symbolic name for clarity and maintainability. Please check if this is intentional or if the symbolic names should be specified.antlr/YorkieSchemaListener.ts (1)
38-324: LGTM!The
YorkieSchemaListenerinterface is correctly defined. All method signatures align with the corresponding contexts fromYorkieSchemaParser, and the use of optional methods (?) is appropriate for a listener interface in TypeScript.antlr/YorkieSchemaLexer.ts (1)
1-1: Verify the use of ANTLR 4.9.0-SNAPSHOTThe header comment indicates that this file was generated using ANTLR 4.9.0-SNAPSHOT. Snapshot versions are development builds and may not be stable or officially supported. It's advisable to use a stable release version of ANTLR for code generation to ensure reliability and maintainability.
antlr/YorkieSchemaParser.ts (7)
1340-1342:⚠️ Potential issueRemove unnecessary constructor in
DeclarationListContext.Similar to the previous comment, the constructor in lines 1340-1342 is unnecessary and can be removed.
Apply this diff:
export class DeclarationListContext extends ParserRuleContext { - constructor(parent: ParserRuleContext | undefined, invokingState: number) { - super(parent, invokingState); - } public declaration(): DeclarationContext[];🧰 Tools
🪛 Biome
[error] 1340-1342: This constructor is unnecessary.
Unsafe fix: Remove the unnecessary constructor.
(lint/complexity/noUselessConstructor)
1375-1377:⚠️ Potential issueRemove unnecessary constructor in
DeclarationContext.Again, the constructor in lines 1375-1377 is unnecessary and can be safely removed.
Apply this diff:
export class DeclarationContext extends ParserRuleContext { - constructor(parent: ParserRuleContext | undefined, invokingState: number) { - super(parent, invokingState); - } public typeAliasDeclaration(): TypeAliasDeclarationContext | undefined { return this.tryGetRuleContext(0, TypeAliasDeclarationContext); }🧰 Tools
🪛 Biome
[error] 1375-1377: This constructor is unnecessary.
Unsafe fix: Remove the unnecessary constructor.
(lint/complexity/noUselessConstructor)
1411-1413:⚠️ Potential issueRemove unnecessary constructor in
TypeAliasDeclarationContext.As before, the constructor in lines 1411-1413 is unnecessary and can be removed.
Apply this diff:
export class TypeAliasDeclarationContext extends ParserRuleContext { - constructor(parent: ParserRuleContext | undefined, invokingState: number) { - super(parent, invokingState); - } public Identifier(): TerminalNode { return this.getToken(YorkieSchemaParser.Identifier, 0); }🧰 Tools
🪛 Biome
[error] 1411-1413: This constructor is unnecessary.
Unsafe fix: Remove the unnecessary constructor.
(lint/complexity/noUselessConstructor)
1447-1449:⚠️ Potential issueRemove unnecessary constructor in
VariableDeclarationContext.The constructor in lines 1447-1449 is unnecessary and should be removed.
Apply this diff:
export class VariableDeclarationContext extends ParserRuleContext { - constructor(parent: ParserRuleContext | undefined, invokingState: number) { - super(parent, invokingState); - } public Identifier(): TerminalNode { return this.getToken(YorkieSchemaParser.Identifier, 0); }🧰 Tools
🪛 Biome
[error] 1447-1449: This constructor is unnecessary.
Unsafe fix: Remove the unnecessary constructor.
(lint/complexity/noUselessConstructor)
1479-1481:⚠️ Potential issueRemove unnecessary constructor in
TypeAnnotationContext.The constructor in lines 1479-1481 is unnecessary and can be safely removed.
Apply this diff:
export class TypeAnnotationContext extends ParserRuleContext { - constructor(parent: ParserRuleContext | undefined, invokingState: number) { - super(parent, invokingState); - } public type(): TypeContext { return this.getRuleContext(0, TypeContext); }🧰 Tools
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[error] 1479-1481: This constructor is unnecessary.
Unsafe fix: Remove the unnecessary constructor.
(lint/complexity/noUselessConstructor)
1511-1513:⚠️ Potential issueRemove unnecessary constructor in
TypeContext.Similarly, the constructor in lines 1511-1513 is unnecessary and can be removed.
Apply this diff:
export class TypeContext extends ParserRuleContext { - constructor(parent: ParserRuleContext | undefined, invokingState: number) { - super(parent, invokingState); - } public unionType(): UnionTypeContext { return this.getRuleContext(0, UnionTypeContext); }🧰 Tools
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[error] 1511-1513: This constructor is unnecessary.
Unsafe fix: Remove the unnecessary constructor.
(lint/complexity/noUselessConstructor)
1549-1551:⚠️ Potential issueRemove unnecessary constructor in
UnionTypeContext.The constructor in lines 1549-1551 is unnecessary and should be removed.
Apply this diff:
export class UnionTypeContext extends ParserRuleContext { - constructor(parent: ParserRuleContext | undefined, invokingState: number) { - super(parent, invokingState); - } public intersectionType(): IntersectionTypeContext[];🧰 Tools
🪛 Biome
[error] 1549-1551: This constructor is unnecessary.
Unsafe fix: Remove the unnecessary constructor.
(lint/complexity/noUselessConstructor)
This commit introduces a CodeMirror editor example for validating Yorkie schema. Users can now visually inspect and validate Yorkie schema directly in the browser. Currently, the validation only highlights parsing errors. Future improvements could include detection and display of semantic errors for a more comprehensive schema validation experience.
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Actionable comments posted: 2
🧹 Outside diff range and nitpick comments (2)
index.html (1)
Line range hint
1-23: Consider adding TypeScript-specific metadata.While the changes effectively set up a CodeMirror Linter example, which can support TypeScript, there's no explicit indication of TypeScript support in the HTML file. To better align with the PR objectives of reorganizing the grammar to fit TypeScript, consider adding a comment or meta tag that indicates TypeScript support.
For example, you could add the following meta tag in the
<head>section:<meta name="description" content="CodeMirror Linter Example with TypeScript support">Or a comment near the editor div:
<!-- CodeMirror editor with TypeScript linting support --> <div id="editor"></div>src/main.ts (1)
40-40: Add Null Check for 'editor' ElementUsing the non-null assertion operator
!assumes that an element with the ID'editor'exists in the DOM. If this element is not present, it could cause a runtime error. Consider adding a null check to handle cases where the element might not be found.Apply this diff to include a null check:
- parent: document.getElementById('editor')!, + const editorElement = document.getElementById('editor'); + if (!editorElement) { + console.error("Element with ID 'editor' not found"); + return; + } + new EditorView({ ... - parent: document.getElementById('editor')!, + parent: editorElement, });This ensures that your application handles the absence of the
'editor'element gracefully.
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⛔ Files ignored due to path filters (2)
package-lock.jsonis excluded by!**/package-lock.jsonsrc/typescript.svgis excluded by!**/*.svg
📒 Files selected for processing (6)
- index.html (1 hunks)
- package.json (2 hunks)
- src/counter.ts (0 hunks)
- src/main.ts (1 hunks)
- src/style.css (0 hunks)
- src/validator.ts (2 hunks)
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- src/counter.ts
- src/style.css
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🔇 Additional comments (11)
index.html (3)
7-7: LGTM: Title update is appropriate.The title change from "Vite + TS" to "CodeMirror Linter Example" accurately reflects the new purpose of the page and aligns with the PR objectives.
8-15: LGTM: Appropriate styles for CodeMirror components.The added CSS styles for
.cm-editorand.cm-scrollerclasses are well-suited for the CodeMirror editor:
- The border on
.cm-editorprovides clear visual separation.- The
overflow: autoon.cm-scrollerensures proper scrolling behavior.These styles will enhance the user experience when working with the CodeMirror editor.
18-19: LGTM: Appropriate HTML structure for CodeMirror Linter example.The additions to the HTML structure are suitable for a CodeMirror Linter example:
- The
<h2>heading clearly identifies the purpose of the page.- The
<div id="editor">provides a designated container for the CodeMirror editor instance.These changes are consistent with the updated title and added styles, creating a cohesive structure for the CodeMirror Linter example.
package.json (2)
22-24: Please clarify the purpose of the new dependencies.New dependencies have been added:
- "@codemirror/lint": "^6.8.2"
- "codemirror": "^6.0.1"
These additions suggest the incorporation of CodeMirror, possibly for code editing or linting features. However, this change is not mentioned in the PR objectives, which focus on reorganizing the grammar to fit TypeScript.
Could you please explain:
- The purpose of adding these dependencies?
- How they relate to the grammar reorganization?
- If this change should be part of a separate PR focused on adding new features?
9-9: LGTM! Verify other files for consistency.The update to the
build:schemascript correctly reflects the change fromSchema.g4toYorkieSchema.g4, which aligns with the PR objective of reorganizing the grammar to fit TypeScript.To ensure all related changes have been made consistently across the project, please run the following verification script:
This script will help confirm that there are no lingering references to the old
Schema.g4file in the project.✅ Verification successful
All references to
Schema.g4have been successfully updated toYorkieSchema.g4.No remaining instances of
Schema.g4were found outside of the updated script references.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Check for any remaining references to Schema.g4 in the project # Search for any remaining references to Schema.g4 rg "Schema\.g4" --type ts --type jsonLength of output: 676
src/validator.ts (6)
2-12: LGTM: Import statements updated correctlyThe import statements have been appropriately updated to include the necessary components for YorkieSchema and additional ANTLR4 utilities. These changes align with the transition from Schema to YorkieSchema.
17-24: LGTM: Well-structured Diagnostic typeThe new
Diagnostictype is well-defined and provides a comprehensive structure for error reporting. It includes severity levels, error messages, and precise location information, which will be valuable for detailed error handling and reporting.
50-76: LGTM: Well-implemented ParserErrorListenerThe new
ParserErrorListenerclass is a well-implemented custom error listener for ANTLR. It correctly createsDiagnosticobjects with detailed error information, including precise location data. This implementation will greatly improve error reporting and debugging capabilities.
92-106: LGTM: Well-implemented getDiagnostics functionThe new
getDiagnosticsfunction is a valuable addition that enhances error reporting capabilities. It correctly sets up a custom error listener and uses it during parsing to collect detailed diagnostic information. This implementation will greatly improve the ability to provide meaningful feedback on parsing errors.
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1-106: Overall assessment: Significant improvements with minor issuesThe changes to
src/validator.tsrepresent a substantial improvement in the structure and capabilities of the validator:
- The transition from Schema to YorkieSchema components has been implemented consistently.
- The introduction of the
Diagnostictype andParserErrorListenerclass greatly enhances error reporting capabilities.- The new
getDiagnosticsfunction provides valuable detailed error information.However, there are a couple of areas that could benefit from further improvement:
- The
visitErrorNodemethod in theVisitorclass could be enhanced to provide better error handling.- The
validatefunction could be updated to handle parsing errors and return more accurate results.Addressing these minor issues will further strengthen the robustness of the validator. Overall, the changes represent a significant step forward in the project's error handling and validation capabilities.
82-85:⚠️ Potential issueImprove error handling in validate function
While the
validatefunction has been correctly updated to use YorkieSchema components, it still lacks proper error handling. The function always returnstrue, regardless of whether parsing was successful or not.Consider implementing error handling to catch parsing exceptions and return
falsewhen validation fails. For example:try { const ast = parser.declaration(); const visitor = new Visitor(); visitor.visit(ast); return true; } catch (e) { console.error(`Validation error: ${e.message}`); return false; }This change would make the
validatefunction more reliable and prevent false positives.
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Actionable comments posted: 8
🧹 Outside diff range and nitpick comments (6)
src/validator.ts (2)
2-8: LGTM! Consider grouping imports for better readability.The new imports and the
Diagnostictype definition look good. They provide the necessary components for the transition to YorkieSchema and a clear structure for error reporting.Consider grouping the imports by their source for better readability:
import { CharStreams, CommonTokenStream, ANTLRErrorListener, Recognizer, Token, CommonToken, } from 'antlr4ts'; import { ParseTree } from 'antlr4ts/tree/ParseTree'; import { ErrorNode } from 'antlr4ts/tree/ErrorNode'; import { RuleNode } from 'antlr4ts/tree/RuleNode'; import { TerminalNode } from 'antlr4ts/tree/TerminalNode'; import { YorkieSchemaLexer } from '../antlr/YorkieSchemaLexer'; import { YorkieSchemaVisitor } from '../antlr/YorkieSchemaVisitor'; import { YorkieSchemaParser } from '../antlr/YorkieSchemaParser';Also applies to: 10-12, 17-24
92-108: LGTM! Consider implementing lexer error handling.The
getDiagnosticsfunction is a valuable addition, providing a way to collect parsing diagnostics. The use of YorkieSchema components and the new ParserErrorListener is well-implemented.There's a TODO comment about adding an error listener to the lexer. Consider implementing this to capture lexer errors as well. You could create a
LexerErrorListenersimilar to theParserErrorListener:class LexerErrorListener implements ANTLRErrorListener<number> { constructor(private errorList: Diagnostic[]) {} syntaxError( _: Recognizer<number, any>, offendingSymbol: number | undefined, line: number, charPositionInLine: number, msg: string, ): void { this.errorList.push({ severity: 'error', message: msg, range: { start: { column: charPositionInLine, line }, end: { column: charPositionInLine + 1, line }, }, }); } }Then, uncomment and use it in the
getDiagnosticsfunction:lexer.removeErrorListeners(); lexer.addErrorListener(new LexerErrorListener(diagnostics));This will provide more comprehensive error reporting, capturing both lexer and parser errors.
antlr/YorkieSchema.interp (2)
1-38: Improved token literal definitions, but some clarification neededThe token literal names section has been significantly improved, with 32 well-defined token literals that are appropriate for a schema language. This is a substantial enhancement from the previous version.
However, there are still 6 null entries at the end of the section (lines 33-38). While these might be placeholders for future tokens or represent tokens without literal representations, it would be beneficial to clarify their purpose or remove them if they are not needed.
Consider adding comments to explain the purpose of these null entries or remove them if they are not necessary for the current implementation.
39-75: Clarify the relationship between literal and symbolic namesThe token symbolic names section now clearly shows the relationship between literal and symbolic tokens. The 30 null entries (lines 40-70) correspond to the token literals defined in the previous section, while the 5 defined symbolic names (lines 71-75) represent tokens without literal representations.
This structure is typical in ANTLR grammars, where tokens can have either a literal name or a symbolic name, but not both. However, to improve readability and maintainability:
- Consider adding a comment at the beginning of this section explaining the relationship between literal and symbolic names.
- You might want to add comments for the null entries, grouping them based on their corresponding literal tokens (e.g., // Operators, // Yorkie types, etc.).
These changes would make the grammar structure more evident to other developers who might work on this file in the future.
antlr/YorkieSchemaVisitor.ts (1)
41-215: LGTM: Well-structured and documented visitor methodsThe interface methods are well-structured and consistently documented. The use of optional methods (
?) allows for flexible implementations of the visitor pattern.Suggestion for improvement:
Consider grouping related methods (e.g., all type-related methods) using comments or by reordering them. This could improve readability for larger visitor implementations.antlr/YorkieSchemaParser.ts (1)
1-2112: Consider addressing unnecessary constructors in ANTLR grammar or configurationThis file appears to be automatically generated by ANTLR for the Yorkie schema language parser. While the implementation is generally correct and follows ANTLR conventions, the presence of unnecessary constructors in all context classes suggests that this might be a result of the ANTLR generation process rather than hand-written code.
Consider reviewing the ANTLR grammar file (
YorkieSchema.g4) or ANTLR configuration to see if there's a way to prevent the generation of these unnecessary constructors. This would result in cleaner generated code without manual post-processing.🧰 Tools
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[error] 1252-1254: This constructor is unnecessary.
Unsafe fix: Remove the unnecessary constructor.
(lint/complexity/noUselessConstructor)
[error] 1287-1289: This constructor is unnecessary.
Unsafe fix: Remove the unnecessary constructor.
(lint/complexity/noUselessConstructor)
[error] 1323-1325: This constructor is unnecessary.
Unsafe fix: Remove the unnecessary constructor.
(lint/complexity/noUselessConstructor)
[error] 1359-1361: This constructor is unnecessary.
Unsafe fix: Remove the unnecessary constructor.
(lint/complexity/noUselessConstructor)
[error] 1391-1393: This constructor is unnecessary.
Unsafe fix: Remove the unnecessary constructor.
(lint/complexity/noUselessConstructor)
[error] 1423-1425: This constructor is unnecessary.
Unsafe fix: Remove the unnecessary constructor.
(lint/complexity/noUselessConstructor)
[error] 1461-1463: This constructor is unnecessary.
Unsafe fix: Remove the unnecessary constructor.
(lint/complexity/noUselessConstructor)
[error] 1499-1501: This constructor is unnecessary.
Unsafe fix: Remove the unnecessary constructor.
(lint/complexity/noUselessConstructor)
[error] 1531-1533: This constructor is unnecessary.
Unsafe fix: Remove the unnecessary constructor.
(lint/complexity/noUselessConstructor)
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📒 Files selected for processing (6)
- antlr/YorkieSchema.g4 (1 hunks)
- antlr/YorkieSchema.interp (1 hunks)
- antlr/YorkieSchemaListener.ts (1 hunks)
- antlr/YorkieSchemaParser.ts (1 hunks)
- antlr/YorkieSchemaVisitor.ts (1 hunks)
- src/validator.ts (2 hunks)
🚧 Files skipped from review as they are similar to previous changes (1)
- antlr/YorkieSchemaListener.ts
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🪛 Biome
antlr/YorkieSchemaParser.ts
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🔇 Additional comments (9)
src/validator.ts (3)
50-77: LGTM! Well-implemented error listener.The
ParserErrorListenerclass is a good addition. It correctly implements theANTLRErrorListener<CommonToken>interface and provides detailed error information in the form ofDiagnosticobjects. The error range calculation is particularly thorough, taking into account the offending symbol's length when available.
30-30:⚠️ Potential issueConsider improving error handling in
visitErrorNodeWhile the
Visitorclass has been correctly updated to implementYorkieSchemaVisitor<Node>, thevisitErrorNodemethod now returns aNodeinstead of handling the error. This change might lead to silent failures during parsing.Consider implementing proper error handling in this method. For example:
visitErrorNode(node: ErrorNode): Node { console.error(`Error node encountered: ${node.text}`); throw new Error(`Syntax error: ${node.text}`); }This approach would make parsing errors more visible and easier to debug.
Also applies to: 45-47
81-85:⚠️ Potential issueAdd error handling for parsing errors in
validatefunctionThe
validatefunction has been correctly updated to use YorkieSchema components. However, it currently does not handle potential parsing errors. If the inputdatacontains syntax errors, the parser may fail silently, and the function will returntrueeven when parsing fails.To ensure accurate validation, consider implementing error handling to catch parsing exceptions and return
falsewhen validation fails. For example:export function validate(data: string): boolean { try { const stream = CharStreams.fromString(data); const lexer = new YorkieSchemaLexer(stream); const tokens = new CommonTokenStream(lexer); const parser = new YorkieSchemaParser(tokens); const ast = parser.declaration(); const visitor = new Visitor(); visitor.visit(ast); return true; } catch (e) { console.error(`Validation error: ${e.message}`); return false; } }This change will ensure that the function returns
falsewhen parsing fails, providing more accurate validation results.antlr/YorkieSchema.interp (3)
77-102: Well-structured and comprehensive rule namesThe rule names section provides a clear and comprehensive set of rules for the YorkieSchema grammar. It covers essential elements such as:
- Document structure (document, declaration)
- Type definitions (typeAliasDeclaration, variableDeclaration)
- Various type constructs (unionType, intersectionType, arrayType, objectType, functionType)
- Yorkie-specific types (yorkieType)
- Expressions and literals
This structure should allow for parsing a wide range of schema definitions and expressions.
The rule names are well-designed and should provide a solid foundation for the YorkieSchema language. As the language evolves, you might consider adding rules for:
- Enum definitions
- Generic type constraints
- Type assertions or type guards
However, these additions should be made only if they align with the planned features of the YorkieSchema language.
105-106: ATN present and generated successfullyThe presence of the Augmented Transition Network (ATN) in this file indicates that ANTLR has successfully processed the grammar and generated the necessary parsing logic. The ATN is a low-level representation used by the ANTLR runtime for efficient parsing.
The ATN's presence is correct and expected in this file. No manual modifications are needed or recommended for this section, as it is automatically generated and maintained by ANTLR.
1-106: Overall assessment: Well-structured and comprehensive YorkieSchema grammarThis ANTLR interpreter file for the YorkieSchema grammar is well-structured and provides a comprehensive definition for the language. The improvements from the previous version are significant, particularly in the token definitions.
Key points:
- Token literal and symbolic names are well-defined, though some clarification on null entries could be beneficial.
- The rule names cover a wide range of language constructs, providing a solid foundation for the YorkieSchema language.
- The presence of the ATN confirms successful processing by ANTLR.
The file is in good shape and ready for use. Consider implementing the minor suggestions for improved clarity and documentation, but these are not critical for functionality. Great job on developing this grammar for the YorkieSchema language!
antlr/YorkieSchemaVisitor.ts (2)
1-30: Consider excluding generated files from version controlThis file is auto-generated by ANTLR 4.9.0-SNAPSHOT. As mentioned in a previous review, it's generally recommended to exclude generated files from version control. This practice helps reduce repository size and prevents potential merge conflicts.
Consider adding this file to
.gitignoreand generating it during the build process instead.
33-40: LGTM: Well-defined interfaceThe
YorkieSchemaVisitor<Result>interface is well-defined and follows TypeScript best practices. The use of a generic typeResultprovides flexibility for different return types in visit operations.antlr/YorkieSchemaParser.ts (1)
30-141: LGTM: YorkieSchemaParser class implementationThe
YorkieSchemaParserclass is well-structured and correctly implements the necessary components for an ANTLR-generated parser. It properly extends theParserclass, defines token types and rule indices, and implements required methods for vocabulary, grammar file name, rule names, and serialized ATN.
| expression | ||
| : Identifier | ||
| | literal | ||
| ; |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Expand expression rule to support literals and expressions comprehensively
The current expression rule only accounts for identifiers and simple literals, which may not be sufficient for more complex initialization expressions in variable declarations.
Consider enhancing the expression rule to include more complex expressions or specify that it's intentionally simplified for the current scope.
| ; | ||
|
|
||
| propertySignature | ||
| : propertyName typeAnnotation ';' |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Make semicolons optional in propertySignature to align with TypeScript syntax
In TypeScript, semicolons and commas between property signatures in type declarations are optional, and properties can also be separated by line breaks. The current grammar requires a semicolon, which may not accommodate all valid TypeScript object type definitions.
Modify the propertySignature rule to make the semicolon optional and allow for commas:
-propertySignature
- : propertyName typeAnnotation ';'
+propertySignature
+ : propertyName typeAnnotation (';' | ',')?This change aligns the grammar with TypeScript's flexibility in defining object types.
📝 Committable suggestion
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Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| : propertyName typeAnnotation ';' | |
| propertySignature | |
| : propertyName typeAnnotation (';' | ',')? |
| // Lexer rules | ||
| Identifier: [a-zA-Z_][a-zA-Z0-9_]*; | ||
| StringLiteral: '"' (~["\r\n])* '"'; | ||
| NumberLiteral: [0-9]+('.'[0-9]+)?; |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Extend NumberLiteral to support negative numbers and exponential notation
The NumberLiteral rule currently only matches positive integers and decimals without exponentials. To fully support numeric literals commonly used in TypeScript, including negative numbers and numbers with exponential notation, consider enhancing the rule.
Update the NumberLiteral rule as follows:
-NumberLiteral: [0-9]+('.'[0-9]+)?;
+NumberLiteral: ('+' | '-')? [0-9]+ ('.' [0-9]+)? ([eE] ('+' | '-')? [0-9]+)?;This revision includes optional signs and exponents, enabling the parsing of numbers like -3.14, 2e10, and -1.6E-4.
📝 Committable suggestion
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Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| NumberLiteral: [0-9]+('.'[0-9]+)?; | |
| NumberLiteral: ('+' | '-')? [0-9]+ ('.' [0-9]+)? ([eE] ('+' | '-')? [0-9]+)?; |
|
|
||
| // Lexer rules | ||
| Identifier: [a-zA-Z_][a-zA-Z0-9_]*; | ||
| StringLiteral: '"' (~["\r\n])* '"'; |
There was a problem hiding this comment.
Enhance StringLiteral rule to support escaped characters
The current StringLiteral rule does not handle escaped characters like \" or \\. This limitation means strings containing escaped quotes or backslashes will not be parsed correctly, leading to errors when processing valid string literals.
Consider updating the StringLiteral rule to support escaped characters:
-StringLiteral: '"' (~["\r\n])* '"';
+StringLiteral: '"' ( '\\' . | ~["\\\r\n] )* '"';This change allows the lexer to recognize escape sequences within strings.
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Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| StringLiteral: '"' (~["\r\n])* '"'; | |
| StringLiteral: '"' ( '\\' . | ~["\\\r\n] )* '"'; |
| yorkieType | ||
| : 'yorkie.Object' | ||
| | 'yorkie.Array' | ||
| | 'yorkie.Counter' | ||
| | 'yorkie.Text' | ||
| | 'yorkie.Tree' | ||
| ; |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Generalize yorkieType to support qualified names for extensibility
Currently, yorkieType matches specific string literals like 'yorkie.Object', which limits the ability to extend the grammar to support additional Yorkie types or namespaced types. Parsing these as qualified names increases flexibility and maintainability.
Redefine yorkieType to parse qualified names:
-yorkieType
- : 'yorkie.Object'
- | 'yorkie.Array'
- | 'yorkie.Counter'
- | 'yorkie.Text'
- | 'yorkie.Tree'
- ;
+qualifiedName
+ : Identifier ('.' Identifier)+;
+
+yorkieType
+ : qualifiedName;This modification allows any namespaced type (e.g., yorkie.CustomType) to be parsed correctly without needing to update the grammar for each new type.
Committable suggestion was skipped due to low confidence.
antlr/YorkieSchema.g4
Outdated
| Identifier: [a-zA-Z_][a-zA-Z0-9_]*; | ||
| StringLiteral: '"' (~["\r\n])* '"'; | ||
| NumberLiteral: [0-9]+('.'[0-9]+)?; | ||
| BooleanLiteral: 'true' | 'false'; | ||
| WS: [ \t\r\n]+ -> skip; |
There was a problem hiding this comment.
Define lexer rules for keywords to ensure correct tokenization
Currently, the lexer does not define tokens for reserved keywords such as 'let', 'type', 'extends', 'number', and others. This may lead to these keywords being improperly matched as Identifier tokens, causing parsing errors or unexpected behavior. To prevent this, explicitly define lexer rules for all keywords before the Identifier rule.
Apply the following changes to define keyword tokens:
+LET: 'let';
+TYPE: 'type';
+EXTENDS: 'extends';
+NUMBER: 'number';
+STRING: 'string';
+BOOLEAN: 'boolean';
+ANY: 'any';
+VOID: 'void';
+NULL: 'null';
+UNDEFINED: 'undefined';
+TRUE: 'true';
+FALSE: 'false';
Identifier: [a-zA-Z_][a-zA-Z0-9_]*;
StringLiteral: '"' (~["\\\r\n] | '\\' .)* '"';
-BooleanLiteral: 'true' | 'false';
+BooleanLiteral: TRUE | FALSE;
WS: [ \t\r\n]+ -> skip;📝 Committable suggestion
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Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| Identifier: [a-zA-Z_][a-zA-Z0-9_]*; | |
| StringLiteral: '"' (~["\r\n])* '"'; | |
| NumberLiteral: [0-9]+('.'[0-9]+)?; | |
| BooleanLiteral: 'true' | 'false'; | |
| WS: [ \t\r\n]+ -> skip; | |
| LET: 'let'; | |
| TYPE: 'type'; | |
| EXTENDS: 'extends'; | |
| NUMBER: 'number'; | |
| STRING: 'string'; | |
| BOOLEAN: 'boolean'; | |
| ANY: 'any'; | |
| VOID: 'void'; | |
| NULL: 'null'; | |
| UNDEFINED: 'undefined'; | |
| TRUE: 'true'; | |
| FALSE: 'false'; | |
| Identifier: [a-zA-Z_][a-zA-Z0-9_]*; | |
| StringLiteral: '"' (~["\r\n])* '"'; | |
| NumberLiteral: [0-9]+('.'[0-9]+)?; | |
| BooleanLiteral: TRUE | FALSE; | |
| WS: [ \t\r\n]+ -> skip; |
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Actionable comments posted: 0
🧹 Outside diff range and nitpick comments (1)
src/validator.ts (1)
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1-133: Overall improvements with some areas for further refinementThe changes in this file significantly improve the schema validation process and error handling capabilities. The introduction of
YorkieSchemaLexer,YorkieSchemaParser, and the correspondingVisitorclass aligns well with the PR objective of reorganizing the grammar to fit TypeScript. The addition ofLexerErrorListener,ParserErrorListener, and thegetDiagnosticsfunction greatly enhances the error reporting capabilities.However, there are a couple of areas that could benefit from further refinement:
- The
visitErrorNodemethod in theVisitorclass could be improved to handle errors more explicitly, as mentioned in a previous comment.- The
validatefunction could be enhanced with try-catch error handling to provide more reliable validation results.Addressing these points would further improve the robustness and reliability of the schema validation process.
Overall, the changes represent a significant step forward in the schema handling capabilities of the project.
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📒 Files selected for processing (1)
- src/validator.ts (2 hunks)
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🔇 Additional comments (6)
src/validator.ts (6)
1-25: LGTM: Import updates and Diagnostic type additionThe changes to the import statements and the addition of the
Diagnostictype are well-aligned with the PR objective. TheDiagnostictype provides a clear structure for error reporting, which will be beneficial for improved error handling.
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31-49: Reconsider error handling in visitErrorNode methodWhile the
Visitorclass has been correctly updated to implementYorkieSchemaVisitor<Node>, thevisitErrorNodemethod now returns aNodeinstead of handling the error. This change might lead to silent failures during parsing.Consider implementing proper error handling in this method, such as throwing an error or logging the issue. For example:
visitErrorNode(node: ErrorNode): Node { console.error(`Error node encountered: ${node.text}`); throw new Error(`Syntax error: ${node.text}`); }This approach would make parsing errors more visible and easier to debug.
51-73: LGTM: LexerErrorListener implementationThe addition of the
LexerErrorListenerclass is a good improvement for error handling. It correctly implements theANTLRErrorListener<number>interface and properly encapsulates error information using theDiagnostictype. This will help in collecting and reporting lexer errors effectively.
75-103: LGTM: ParserErrorListener implementationThe addition of the
ParserErrorListenerclass is a valuable improvement for error handling. It correctly implements theANTLRErrorListener<CommonToken>interface and properly encapsulates error information using theDiagnostictype. The additional logic to handle theoffendingSymbolprovides more accurate error ranges, which will be helpful for precise error reporting.
118-133: LGTM: Addition of getDiagnostics functionThe new
getDiagnosticsfunction is a valuable addition to the error handling capabilities of the validator. It effectively uses bothLexerErrorListenerandParserErrorListenerto collect comprehensive diagnostics. The removal of default error listeners and addition of custom ones is a good practice that ensures all errors are captured in the desired format.This function will greatly improve the ability to provide detailed feedback on parsing errors, enhancing the overall robustness of the schema validation process.
105-116:⚠️ Potential issueAdd error handling for parsing errors in
validatefunctionThe
validatefunction has been updated to use the newYorkieSchemaLexerandYorkieSchemaParser, which is good. However, it still lacks error handling for potential parsing errors. If the inputdatacontains syntax errors, the parser may fail silently, and the function will returntrueeven when parsing fails.To ensure accurate validation, consider implementing error handling to catch parsing exceptions and return
falsewhen validation fails. For example:export function validate(data: string): boolean { try { const stream = CharStreams.fromString(data); const lexer = new YorkieSchemaLexer(stream); const tokens = new CommonTokenStream(lexer); const parser = new YorkieSchemaParser(tokens); const ast = parser.declaration(); const visitor = new Visitor(); visitor.visit(ast); return true; } catch (e) { console.error(`Validation error: ${e.message}`); return false; } }This change will improve the reliability of the validation process.
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Actionable comments posted: 3
🧹 Outside diff range and nitpick comments (6)
antlr/YorkieSchema.tokens (2)
30-36: LGTM: Named tokens are well-defined. Consider adding a newline token.The named tokens are correctly defined and cover essential elements for a schema language, including identifiers, literals, comments, and whitespace. The token numbering is consistent with the previous segment.
Consider adding an explicit token for newline characters (e.g.,
Newline=37) if line-based parsing is important for your grammar. This can sometimes make certain parsing rules clearer and more explicit.
55-59: LGTM: Yorkie-specific tokens are correctly defined. Consider future-proofing.The Yorkie-specific type tokens ('yorkie.Object', 'yorkie.Array', 'yorkie.Counter', 'yorkie.Text', 'yorkie.Tree') are correctly defined, providing essential support for Yorkie's custom data types in the schema language.
To future-proof the token definitions, consider leaving some gap in the token values for Yorkie-specific types. For example, you could start these at a higher number (e.g., 50) to allow easy insertion of new Yorkie types in the future without disrupting the existing token value sequence.
src/validator.ts (1)
122-136: LGTM: New getDiagnostics function for comprehensive error reportingThe addition of the
getDiagnosticsfunction is a great improvement for error reporting. It utilizes bothLexerErrorListenerandParserErrorListenerto collect diagnostics during lexing and parsing, providing a comprehensive view of any issues in the input.One minor suggestion for improvement:
Consider adding a comment explaining the purpose of this function and how it differs from the
validatefunction. This will help other developers understand when to use each function. For example:/** * Parses the input and returns a list of all diagnostics (errors and warnings) * encountered during lexing and parsing. Unlike `validate`, this function * does not throw exceptions and provides more detailed error information. */ export function getDiagnostics(data: string): Diagnostic[] { // ... (existing implementation) }test/schema.test.ts (1)
1-262: Overall test suite review and suggestions for improvementThe test suite for schema validation is well-structured and covers a wide range of scenarios, including TypeScript features, Yorkie-specific types, and user-defined types. However, there are several skipped tests that need attention:
- Implement or enable the skipped tests in the TypeScript and Yorkie sections if the features are now available.
- Address the TODO comment in the skipped test for incorrect usage of Yorkie type.
- Review and enable the exception handling tests, or remove them if they're no longer relevant.
Consider adding more edge cases and boundary conditions to further strengthen the test suite. Additionally, ensure that all implemented features have corresponding test cases to maintain high code quality and prevent regressions.
antlr/YorkieSchemaLexer.interp (1)
121-122: Mode names are correctly defined, but consider potential for expansion.The lexer currently only uses the DEFAULT_MODE, which is sufficient for many grammars. However, as the Yorkie schema language evolves, you might consider introducing additional modes for handling special contexts (e.g., string interpolation, documentation comments) if needed.
antlr/YorkieSchemaLexer.ts (1)
118-251: Serialized ATN is present but could be improved.The serialized ATN is correctly defined as a static readonly property. However, its readability could be improved:
Consider breaking down the long string into multiple lines for better readability. You can use template literals for this purpose:
public static readonly _serializedATN: string = ` \x03\uC91D\uCABA\u058D\uAFBA\u4F53\u0607\uEA8B\uC241\x02&\u0130\b\x01 \x04\x02\t\x02\x04\x03\t\x03\x04\x04\t\x04\x04\x05\t\x05\x04\x06\t\x06 // ... rest of the serialized ATN ... `;
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📒 Files selected for processing (12)
- antlr/YorkieSchema.g4 (1 hunks)
- antlr/YorkieSchema.interp (1 hunks)
- antlr/YorkieSchema.tokens (1 hunks)
- antlr/YorkieSchemaLexer.interp (1 hunks)
- antlr/YorkieSchemaLexer.tokens (1 hunks)
- antlr/YorkieSchemaLexer.ts (1 hunks)
- antlr/YorkieSchemaListener.ts (1 hunks)
- antlr/YorkieSchemaParser.ts (1 hunks)
- antlr/YorkieSchemaVisitor.ts (1 hunks)
- src/main.ts (1 hunks)
- src/validator.ts (2 hunks)
- test/schema.test.ts (1 hunks)
🚧 Files skipped from review as they are similar to previous changes (2)
- antlr/YorkieSchema.g4
- antlr/YorkieSchemaListener.ts
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antlr/YorkieSchemaParser.ts
[error] 1109-1111: This constructor is unnecessary.
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[error] 1144-1146: This constructor is unnecessary.
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🔇 Additional comments (42)
antlr/YorkieSchema.tokens (3)
1-29: LGTM: Generic numbered tokens are correctly defined.The generic numbered tokens (T__0 to T__28) are correctly defined with sequential values from 1 to 29. This is a standard practice in ANTLR token files for representing various elements in the grammar.
37-54: LGTM: Literal tokens are comprehensive and align with TypeScript.The literal tokens are well-defined and cover a comprehensive range of elements necessary for a typed schema language. The inclusion of TypeScript-specific concepts like 'null', 'undefined', generics syntax, and the 'extends' keyword aligns well with the PR objective of reorganizing the grammar to fit TypeScript.
The token definitions provide a solid foundation for parsing TypeScript-like schema definitions, which should facilitate the integration with the Yorkie project.
Also applies to: 60-65
1-65: Overall, excellent token definitions for YorkieSchema.This token file provides a comprehensive and well-structured set of definitions for the YorkieSchema lexer. It successfully incorporates general programming constructs, TypeScript-like features, and Yorkie-specific types, aligning perfectly with the PR objective of reorganizing the grammar to fit TypeScript.
The token definitions lay a solid foundation for parsing TypeScript-like schema definitions in the Yorkie project. While there are minor suggestions for potential improvements (like explicit newline handling and future-proofing Yorkie-specific token values), these are not critical issues and do not detract from the overall quality of the file.
Great job on creating a robust token set that should significantly contribute to the successful implementation of the YorkieSchema parser!
antlr/YorkieSchemaLexer.tokens (3)
1-29: LGTM: Generic token definitions are correct and follow ANTLR conventions.The generic tokens (T__0 to T__28) are correctly defined with sequential numbering from 1 to 29, which is in line with ANTLR lexer token conventions.
30-36: LGTM: Named token definitions are comprehensive and correctly sequenced.The named tokens cover essential language constructs (Identifier, StringLiteral, NumberLiteral, BooleanLiteral) as well as comments (SingleLineComment, MultiLineComment) and whitespace (WS). The token numbering correctly continues the sequence from the generic tokens, maintaining consistency.
37-65:⚠️ Potential issueToken definitions are comprehensive, but numbering and ordering need attention.
The specific string tokens cover a wide range of language constructs, including keywords, operators, and Yorkie-specific elements, which is excellent for a comprehensive lexer. However, there are two concerns:
- Token numbering restarts from 1, which is inconsistent with the previous segments and may cause conflicts.
- The ordering of tokens doesn't always match their numeric values (e.g., '(' is assigned 24, but appears after tokens assigned higher numbers).
Consider the following changes:
- Continue the token numbering sequence from the previous segments instead of restarting from 1.
- Reorder the token definitions to match their numeric values for consistency and easier maintenance.
Example of corrected numbering (adjust actual numbers based on the full token list):
-'type'=1 +'type'=37 -'='=2 +'='=38 -';'=3 +';'=39To ensure all token references are updated correctly after renumbering, run the following script:
This will help identify any places where token numbers need to be updated after renumbering.
src/validator.ts (6)
1-25: LGTM: Import updates and new Diagnostic typeThe changes to the import statements and the addition of the
Diagnostictype align well with the PR objective of reorganizing the grammar for TypeScript compatibility. TheDiagnostictype provides a structured way to handle and report errors, which is a good practice for improving error handling and reporting.
Line range hint
31-48: LGTM: Visitor class updates and improved error handlingThe
Visitorclass has been correctly updated to implementYorkieSchemaVisitor<Node>, aligning with the new YorkieSchema grammar. The modification to thevisitErrorNodemethod now throws an error, addressing the past review comment about proper error handling. This change will make parsing errors more visible and easier to debug.
50-72: LGTM: New LexerErrorListener for improved error handlingThe addition of the
LexerErrorListenerclass is a good improvement to error handling. It captures lexer errors and adds them to a list ofDiagnosticobjects, which will help in providing more detailed and structured error information during the lexing process.
74-101: LGTM: New ParserErrorListener for comprehensive error handlingThe addition of the
ParserErrorListenerclass complements theLexerErrorListener, providing comprehensive error handling for both lexing and parsing stages. The implementation is thorough, including proper range calculation for errors when an offending symbol is available. This will greatly improve the quality and specificity of error reporting during the parsing process.
103-120: LGTM: Improved validate function with error handlingThe
validatefunction has been updated to useYorkieSchemaLexerandYorkieSchemaParser, aligning with the new YorkieSchema grammar. The addition of error handling with a try-catch block addresses the past review comment about handling parsing errors. This improvement ensures that the function will returnfalsewhen validation fails due to parsing errors, providing more reliable validation results.
Line range hint
1-136: Excellent work on reorganizing and improving the validatorThis update to the
validator.tsfile successfully achieves the PR objective of reorganizing the grammar to fit TypeScript. The changes include:
- Updated imports to use the new YorkieSchema components.
- Improved
Visitorclass implementation with better error handling.- New
LexerErrorListenerandParserErrorListenerclasses for comprehensive error capturing.- Enhanced
validatefunction with proper error handling.- New
getDiagnosticsfunction for detailed error reporting.These changes significantly improve the robustness and error reporting capabilities of the validator. The code is well-structured, and all past review comments have been addressed. This update will make the schema validation process more reliable and easier to debug.
Great job on this comprehensive improvement!
antlr/YorkieSchema.interp (5)
1-39: Token literal names look appropriate for a schema language.The token literal names section includes a comprehensive set of tokens for defining a schema language, including keywords like 'type', 'let', and various Yorkie-specific types. The 'null' entries at the beginning and end of the list (lines 2 and 33-38) are typical in ANTLR grammars and often represent special tokens or placeholders. They are not necessarily an issue and can be safely ignored.
40-77: Token symbolic names are appropriately defined for key language constructs.The token symbolic names section includes essential definitions for language constructs such as Identifier, StringLiteral, NumberLiteral, BooleanLiteral, and various comment types. The numerous 'null' entries (lines 41-70) correspond to token literal names that don't require specific symbolic names, which is a common practice in ANTLR grammars. This approach allows for a more flexible and maintainable grammar definition.
79-102: Rule names provide comprehensive coverage of language constructs.The rule names section defines a well-structured set of rules for the YorkieSchema language. It covers essential language constructs such as document structure, declarations (type aliases and variables), various type definitions (union, intersection, array), and expressions. This comprehensive set of rules should allow for a flexible and expressive schema definition language.
104-105: ATN structure present and complete.The Augmented Transition Network (ATN) structure is present in the file. This machine-generated code represents the internal parsing logic for the defined grammar. As it's automatically generated based on the grammar rules, no further review is necessary.
1-105: Overall, the YorkieSchema interpreter file is well-structured and comprehensive.This ANTLR interpreter file for YorkieSchema provides a solid foundation for a schema definition language. It includes a comprehensive set of token literals and symbolic names, well-organized rule names covering various language constructs, and the necessary ATN structure for parsing. The file structure follows ANTLR conventions, including the use of 'null' entries where appropriate. This grammar should enable the creation of a flexible and expressive schema language for Yorkie.
test/schema.test.ts (7)
80-89: Review skipped test for unsupported typesThis test case for detecting unsupported types in TypeScript is currently skipped. Consider implementing the validation logic for unsupported types or documenting the reason for skipping this test.
139-148: Address TODO comment in skipped testThis test case contains a TODO comment indicating that the intention of the test needs to be figured out. Please clarify the intention behind this test and address the TODO. If the purpose is unclear, consider removing or rewriting the test to reflect the current requirements.
167-220: LGTM: User-defined type tests are comprehensiveThe tests for user-defined types cover various scenarios including different array syntax and multiple type definitions. This section provides good coverage for validating user-defined types in the schema.
222-262: Consider enabling or documenting skipped exception testsThe entire
Schema:Exceptiontest suite is skipped. These tests are important for validating exception cases such as undefined types, reserved words, unused type definitions, and type cycles.
- If these tests are pending due to incomplete features, please document the reasons for skipping and any plans to implement the necessary functionality.
- If they're obsolete or no longer relevant, consider removing them to keep the test suite clean.
Improving exception handling tests will enhance the robustness of the schema validator.
129-137: Consider enabling the test for Yorkie types with user-defined attributesThis test case for validating Yorkie types with user-defined attributes is currently skipped. If the feature is now implemented, consider enabling this test to ensure proper validation of user-defined attributes in Yorkie types.
To check if this feature is implemented, run the following script:
#!/bin/bash # Search for user-defined attributes handling in the validator rg --type typescript 'user-defined.*attributes' src/validator.tsIf the search returns relevant results, it might indicate that the feature is implemented and the test can be enabled.
150-164: Consider enabling the test for Yorkie's complex typesThis test case for parsing a schema using Yorkie's complex types is currently skipped. If the feature is now implemented, consider enabling this test to ensure proper validation of complex types in Yorkie schemas.
To check if this feature is implemented, run the following script:
#!/bin/bash # Search for complex type handling in the validator rg --type typescript 'complex.*type' src/validator.tsIf the search returns relevant results, it might indicate that the feature is implemented and the test can be enabled.
5-18: Consider enabling the skipped test for literal typesThis test case for validating value restriction with literal types is currently skipped. If the feature is now implemented, consider enabling this test to ensure proper validation of literal types in the schema.
To check if this feature is implemented, run the following script:
If the search returns relevant results, it might indicate that the feature is implemented and the test can be enabled.
antlr/YorkieSchemaLexer.interp (5)
1-38: Token literal names are well-defined and comprehensive.The token literal names cover all necessary elements for the Yorkie schema language, including basic types, Yorkie-specific types, and relevant operators and symbols.
40-77: Token symbolic names are correctly defined.The token symbolic names include all necessary non-literal tokens for the lexer, such as identifiers, literals, comments, and whitespace. The null entries correspond to the literal tokens defined earlier, which is the expected behavior.
117-119: Channel names are correctly defined.The channel names include the standard ANTLR channels: DEFAULT_TOKEN_CHANNEL and HIDDEN. These are sufficient for most lexer definitions and are correctly implemented here.
124-125: ATN definition is present and auto-generated.The Augmented Transition Network (ATN) definition is present and appears to be correctly auto-generated by ANTLR. This internal representation is used for efficient lexing and is not meant to be modified manually.
1-125: Overall, the YorkieSchemaLexer.interp file is well-defined and functional.The lexer definition for the Yorkie schema language is comprehensive and correctly structured. It includes all necessary components: token literal names, symbolic names, rule names, channel names, mode names, and the ATN definition. While the current implementation is functional, consider the suggested improvements, particularly using descriptive names for token rules, to enhance readability and maintainability of the grammar.
antlr/YorkieSchemaLexer.ts (7)
1-15: Import statements look good.The necessary imports from the
antlr4tslibrary are present and correctly structured. This ensures that all required components for the lexer implementation are available.
56-64: Channel names and mode names are correctly defined.The
channelNamesandmodeNamesarrays are properly initialized. The use oftslint:disable:no-trailing-whitespacecomments indicates awareness of linting rules, which is good practice.
66-88: Rule names and vocabulary are well-defined.The
ruleNamesarray and vocabulary implementation look correct. The use ofVocabularyImplfor creating theVOCABULARYconstant is appropriate.
90-116: Getter methods are correctly implemented.The getter methods for vocabulary, grammar file name, rule names, serialized ATN, channel names, and mode names are properly defined with the correct decorators.
98-101: Constructor is concise and correct.The constructor properly initializes the lexer with a
LexerATNSimulator.
252-259: ATN deserialization method is correctly implemented.The static
_ATNgetter method properly deserializes the ATN usingATNDeserializer. The lazy initialization approach is a good practice for performance.
1-262: Overall, the YorkieSchemaLexer implementation is solid and well-structured.The lexer correctly extends the ANTLR4 Lexer class and provides all necessary components for tokenizing the Yorkie schema language. The code follows ANTLR-generated patterns and TypeScript best practices. While there are no major issues, consider the suggested improvements for token grouping and ATN serialization readability to enhance maintainability.
antlr/YorkieSchemaParser.ts (2)
1-27: LGTM: Imports and overall structureThe import statements and overall structure of the file are appropriate for an ANTLR-generated parser. The necessary components from the antlr4ts library are imported, along with the YorkieSchemaListener and YorkieSchemaVisitor.
30-137: LGTM: YorkieSchemaParser class implementationThe YorkieSchemaParser class is correctly implemented, extending the Parser class from antlr4ts. It includes the necessary static fields for token types and rule indices, and implements the required methods from the Parser interface.
src/main.ts (3)
11-13: Potential Off-By-One Error in Line Number CalculationAs previously noted, there's a potential off-by-one error in the line number calculation. The
view.state.doc.line(n)method expects a 1-based line number, butdata.range.start.lineanddata.range.end.linemay be 0-based fromgetDiagnostics(code). This could lead to incorrect positioning of diagnostics in the editor.
6-19: Code Structure and Integration Look GoodThe implementation of the
yorkieLinterfunction correctly sets up custom linting with CodeMirror. The integration of diagnostics mapping and the use of thelinterextension are appropriately handled.
21-41: Initialization of EditorView is ProperThe
EditorViewis correctly initialized with the provided document and extensions. The basic setup, custom linter, and lint gutter are well-configured, ensuring the editor functions as intended.antlr/YorkieSchemaVisitor.ts (1)
1-192:YorkieSchemaVisitorinterface is correctly implementedThe autogenerated
YorkieSchemaVisitorinterface properly extendsParseTreeVisitorand includes all the necessary visit methods for traversing the parse tree produced byYorkieSchemaParser. The file appears well-structured and accurately reflects the grammar definitions.
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🧹 Outside diff range and nitpick comments (2)
src/validator.ts (2)
129-144: LGTM: Useful addition of getDiagnostics functionThe new
getDiagnosticsfunction is a valuable addition to the module. It provides a way to obtain detailed diagnostic information without performing full validation, which can be useful in various scenarios.One minor suggestion for improvement:
Consider adding a try-catch block to handle any unexpected errors during lexing or parsing. This would make the function more robust and prevent it from throwing unhandled exceptions.Example:
export function getDiagnostics(data: string): Diagnostic[] { const diagnostics: Diagnostic[] = []; try { // ... existing code ... } catch (error) { diagnostics.push({ severity: 'error', message: `Unexpected error: ${error.message}`, range: { start: { column: 0, line: 0 }, end: { column: 0, line: 0 } } }); } return diagnostics; }This change would ensure that the function always returns a Diagnostic array, even in case of unexpected errors.
Line range hint
1-144: Great job on refactoring and improving error handlingOverall, this refactoring significantly enhances the validator's functionality and error reporting capabilities. Key improvements include:
- Transition from Schema to YorkieSchema, aligning with the PR's objective.
- Introduction of a robust error handling system with custom
LexerErrorListenerandParserErrorListener.- Addition of the
Diagnostictype for structured error reporting.- Implementation of the
getDiagnosticsfunction for more granular error information.These changes will greatly improve the maintainability and usability of the codebase. The error handling is now more informative and flexible, which will aid in debugging and provide better feedback to users of this module.
One area for potential future improvement could be to add more comprehensive unit tests to ensure the new error handling mechanisms work as expected across various scenarios.
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🔇 Additional comments (5)
src/validator.ts (5)
2-9: LGTM: Updated imports and new Diagnostic typeThe changes to the import statements correctly reflect the transition from Schema to YorkieSchema components. The new Diagnostic type is well-structured and will be useful for detailed error reporting.
Also applies to: 11-13, 18-25
50-72: LGTM: Well-implemented LexerErrorListenerThe new
LexerErrorListenerclass is a good addition to the error handling system. It correctly implements theANTLRErrorListener<number>interface and provides detailed error information in the form ofDiagnosticobjects. This will greatly improve error reporting and debugging capabilities.
74-102: LGTM: Well-implemented ParserErrorListenerThe new
ParserErrorListenerclass is a valuable addition to the error handling system. It correctly implements theANTLRErrorListener<CommonToken>interface and provides detailed error information in the form ofDiagnosticobjects. The additional logic for handling the offending symbol's range is particularly useful for more precise error reporting. This implementation will significantly enhance the parser's error handling capabilities.
106-125: LGTM: Improved validate function with better error handlingThe
validatefunction has been successfully updated to useYorkieSchemaLexerandYorkieSchemaParser. The addition of custom error listeners (LexerErrorListenerandParserErrorListener) significantly improves error handling. The function now properly captures and reports errors, returningfalseif any diagnostics are present. These changes enhance the overall robustness and reliability of the validation process.
31-31:⚠️ Potential issueConsider improving error handling in visitErrorNode
While the change to
YorkieSchemaVisitor<Node>is appropriate, thevisitErrorNodemethod now returns aNodeinstead of handling the error explicitly. This might lead to silent failures during parsing.Consider implementing proper error handling in this method, such as throwing an error or logging the issue. For example:
visitErrorNode(node: ErrorNode): Node { console.error(`Error node encountered: ${node.text}`); throw new Error(`Syntax error: ${node.text}`); }This approach would make parsing errors more visible and easier to debug.
Also applies to: 45-47
Reorganize the grammar to fit TypeScript.
This PR continues the refinement work on #2.
Summary by CodeRabbit
New Features
Bug Fixes
Documentation