mirror of
https://github.com/mermaid-js/mermaid.git
synced 2025-09-19 07:19:41 +02:00
class diagram support added
This commit is contained in:
Knut Sveidqvist
@@ -50,6 +50,8 @@
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"checkCircle": "npx madge --circular ./src",
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"antlr:sequence:clean": "rimraf src/diagrams/sequence/parser/antlr/generated",
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"antlr:sequence": "pnpm run antlr:sequence:clean && antlr4ng -Dlanguage=TypeScript -Xexact-output-dir -o src/diagrams/sequence/parser/antlr/generated src/diagrams/sequence/parser/antlr/SequenceLexer.g4 src/diagrams/sequence/parser/antlr/SequenceParser.g4",
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"antlr:class:clean": "rimraf src/diagrams/class/parser/antlr/generated",
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"antlr:class": "pnpm run antlr:class:clean && antlr4ng -Dlanguage=TypeScript -Xexact-output-dir -o src/diagrams/class/parser/antlr/generated src/diagrams/class/parser/antlr/ClassLexer.g4 src/diagrams/class/parser/antlr/ClassParser.g4",
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"prepublishOnly": "pnpm docs:verify-version"
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},
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"repository": {
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147
packages/mermaid/src/diagrams/class/ANTLR_MIGRATION.md
Normal file
147
packages/mermaid/src/diagrams/class/ANTLR_MIGRATION.md
Normal file
@@ -0,0 +1,147 @@
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## ANTLR migration plan for Class Diagrams (parity with Sequence)
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This guide summarizes how to migrate the Class diagram parser from Jison to ANTLR (antlr4ng), following the approach used for Sequence diagrams. The goal is full feature parity and 100% test pass rate, while keeping the Jison implementation as the reference until the ANTLR path is green.
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### Objectives
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- Keep the existing Jison parser as the authoritative reference until parity is achieved
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- Add an ANTLR parser behind a runtime flag (`USE_ANTLR_PARSER=true`), mirroring Sequence
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- Achieve 100% test compatibility with the current Jison behavior, including error cases
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- Keep the public DB and rendering contracts unchanged
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---
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## 1) Prep and references
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- Use the Sequence migration as a template for structure, scripts, and patterns:
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- antlr4ng grammar files: `SequenceLexer.g4`, `SequenceParser.g4`
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- wrapper: `antlr-parser.ts` providing a Jison-compatible `parse()` and `yy`
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- generation script: `pnpm --filter mermaid run antlr:sequence`
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- For Class diagrams, identify analogous files:
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- Jison grammar: `packages/mermaid/src/diagrams/class/parser/classDiagram.jison`
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- DB: `packages/mermaid/src/diagrams/class/classDb.ts`
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- Tests: `packages/mermaid/src/diagrams/class/classDiagram.spec.js`
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- Confirm Class diagram features in the Jison grammar and tests: classes, interfaces, enums, relationships (e.g., `--`, `*--`, `o--`, `<|--`, `--|>`), visibility markers (`+`, `-`, `#`, `~`), generics (`<T>`, nested), static/abstract indicators, fields/properties, methods (with parameters and return types), stereotypes (`<< >>`), notes, direction, style/config lines, and titles/accessibility lines if supported.
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---
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## 2) Create ANTLR grammars
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- Create `ClassLexer.g4` and `ClassParser.g4` under `packages/mermaid/src/diagrams/class/parser/antlr/`
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- Lexer design guidelines (mirror Sequence approach):
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- Implement stateful lexing with modes to replicate Jison behavior (e.g., default, line/rest-of-line, config/title/acc modes if used)
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- Ensure token precedence resolves conflicts between relation arrows and generics (`<|--` vs `<T>`). Prefer longest-match arrow tokens and handle generics in parser context
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- Accept identifiers that include special characters that Jison allowed (quotes, underscores, digits, unicode as applicable)
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- Provide tokens for core keywords and symbols: `class`, `interface`, `enum`, relationship operators, visibility markers, `<< >>` stereotypes, `{ }` blocks, `:` type separators, `,` parameter separators, `[` `]` arrays, `<` `>` generics
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- Reuse common tokens shared across diagrams where appropriate (e.g., `TITLE`, `ACC_...`) if Class supports them
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- Parser design guidelines:
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- Follow the Jison grammar structure closely to minimize semantic drift
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- Allow the final statement in the file to omit a trailing newline (to avoid EOF vs NEWLINE mismatches)
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- Keep non-ambiguous rules for:
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- Class declarations and bodies (members split into fields/properties vs methods)
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- Modifiers (visibility, static, abstract)
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- Types (simple, namespaced, generic with nesting)
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- Relationships with labels (left->right/right->left forms) and multiplicities
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- Stereotypes and notes
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- Optional global lines (title, accTitle, accDescr) if supported by class diagrams
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---
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## 3) Add the wrapper and flag switch
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- Add `packages/mermaid/src/diagrams/class/parser/antlr/antlr-parser.ts`:
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- Export an object `{ parse, parser, yy }` that mirrors the Jison parser shape
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- `parse(input)` should:
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- `this.yy.clear()` to reset DB (same as Sequence)
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- Build ANTLR's lexer/parser, set `BailErrorStrategy` to fail-fast on syntax errors
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- Walk the tree with a listener that calls classDb methods
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- Implement no-op bodies for `visitTerminal`, `visitErrorNode`, `enterEveryRule`, `exitEveryRule` (required by ParseTreeWalker)
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- Avoid `require()`; import from `antlr4ng`
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- Use minimal `any`; when casting is unavoidable, add clear comments
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- Add `packages/mermaid/src/diagrams/class/parser/classParser.ts` similar to Sequence `sequenceParser.ts`:
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- Import both the Jison parser and the ANTLR wrapper
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- Gate on `process.env.USE_ANTLR_PARSER === 'true'`
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- Normalize whitespace if Jison relies on specific newlines (keep parity with Sequence patterns)
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---
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## 4) Implement the listener (semantic actions)
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Map parsed constructs to classDb calls. Typical handlers include:
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- Class-like declarations
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- `db.addClass(id, { type: 'class'|'interface'|'enum', ... })`
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- `db.addClassMember(id, member)` for fields/properties/methods (capture visibility, static/abstract, types, params)
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- Stereotypes, annotations, notes: `db.addAnnotation(...)`, `db.addNote(...)` if applicable
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- Relationships
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- Parse arrow/operator to relation type; map to db constants (composition/aggregation/inheritance/realization/association)
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- `db.addRelation(lhs, rhs, { type, label, multiplicity })`
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- Title/Accessibility (if supported in Class diagrams)
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- `db.setDiagramTitle(...)`, `db.setAccTitle(...)`, `db.setAccDescription(...)`
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- Styles/Directives/Config lines as supported by the Jison grammar
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Error handling:
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- Use BailErrorStrategy; let invalid constructs throw where Jison tests expect failure
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- For robustness parity, only swallow exceptions in places where Jison tolerated malformed content without aborting
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---
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## 5) Scripts and generation
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- Add package scripts similar to Sequence in `packages/mermaid/package.json`:
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- `antlr:class:clean`: remove generated TS
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- `antlr:class`: run antlr4ng to generate TS into `parser/antlr/generated`
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- Example command (once scripts exist):
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- `pnpm --filter mermaid run antlr:class`
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---
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## 6) Tests (Vitest)
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- Run existing Class tests with the ANTLR parser enabled:
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- `USE_ANTLR_PARSER=true pnpm vitest packages/mermaid/src/diagrams/class/classDiagram.spec.js --run`
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- Start by making a small focused subset pass, then expand to the full suite
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- Add targeted tests for areas where the ANTLR grammar needs extra coverage (e.g., nested generics, tricky arrow/operator precedence, stereotypes, notes)
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- Keep test expectations identical to Jison’s behavior; only adjust if Jison’s behavior was explicitly flaky and already tolerated in the repo
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---
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## 7) Linting and quality
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- Satisfy ESLint rules enforced in the repo:
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- Prefer imports over `require()`; no empty methods, avoid untyped `any` where reasonable
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- If `@ts-ignore` is necessary, include a descriptive reason (≥10 chars)
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- Provide minimal types for listener contexts where helpful; keep casts localized and commented
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- Prefix diagnostic debug logs with the project’s preferred prefix if temporary logging is needed (and clean up before commit)
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---
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## 8) Common pitfalls and tips
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- NEWLINE vs EOF: allow the last statement without a trailing newline to prevent InputMismatch
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- Token conflicts: order matters; ensure relationship operators (e.g., `<|--`, `--|>`, `*--`, `o--`) win over generic `<`/`>` in the right contexts
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- Identifiers: match Jison’s permissiveness (quoted names, digits where allowed) and avoid over-greedy tokens that eat operators
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- Listener resilience: ensure classes and endpoints exist before adding relations (create implicitly if Jison did so)
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- Error parity: do not swallow exceptions for cases where tests expect failure
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---
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## 9) Rollout checklist
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- [ ] Grammar compiles and generated files are committed
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- [ ] `USE_ANTLR_PARSER=true` passes all Class diagram tests
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- [ ] Sequence and other diagram suites remain green
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- [ ] No new ESLint errors; warnings minimized
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- [ ] PR includes notes on parity and how to run the ANTLR tests
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---
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## 10) Quick command reference
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- Generate ANTLR targets (after adding scripts):
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- `pnpm --filter mermaid run antlr:class`
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- Run Class tests with ANTLR parser:
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- `USE_ANTLR_PARSER=true pnpm vitest packages/mermaid/src/diagrams/class/classDiagram.spec.js --run`
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- Run a single test:
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- `USE_ANTLR_PARSER=true pnpm vitest packages/mermaid/src/diagrams/class/classDiagram.spec.js -t "some test name" --run`
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@@ -1,4 +1,4 @@
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import { parser } from './parser/classDiagram.jison';
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import { parser } from './parser/classParser.ts';
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import { ClassDB } from './classDb.js';
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describe('class diagram, ', function () {
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@@ -1,6 +1,6 @@
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import type { DiagramDefinition } from '../../diagram-api/types.js';
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// @ts-ignore: JISON doesn't support types
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import parser from './parser/classDiagram.jison';
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import parser from './parser/classParser.ts';
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import { ClassDB } from './classDb.js';
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import styles from './styles.js';
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import renderer from './classRenderer-v3-unified.js';
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@@ -1,6 +1,6 @@
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/* eslint-disable @typescript-eslint/unbound-method -- Broken for Vitest mocks, see https://github.com/vitest-dev/eslint-plugin-vitest/pull/286 */
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// @ts-expect-error Jison doesn't export types
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import { parser } from './parser/classDiagram.jison';
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// @ts-expect-error Parser exposes mutable yy property without typings
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import { parser } from './parser/classParser.ts';
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import { ClassDB } from './classDb.js';
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import { vi, describe, it, expect } from 'vitest';
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import type { ClassMap, NamespaceNode } from './classTypes.js';
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@@ -1,6 +1,6 @@
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import type { DiagramDefinition } from '../../diagram-api/types.js';
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// @ts-ignore: JISON doesn't support types
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import parser from './parser/classDiagram.jison';
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import parser from './parser/classParser.ts';
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import { ClassDB } from './classDb.js';
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import styles from './styles.js';
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import renderer from './classRenderer-v3-unified.js';
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229
packages/mermaid/src/diagrams/class/parser/antlr/ClassLexer.g4
Normal file
229
packages/mermaid/src/diagrams/class/parser/antlr/ClassLexer.g4
Normal file
@@ -0,0 +1,229 @@
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lexer grammar ClassLexer;
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tokens {
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ACC_TITLE_VALUE,
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ACC_DESCR_VALUE,
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ACC_DESCR_MULTILINE_VALUE,
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ACC_DESCR_MULTI_END,
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OPEN_IN_STRUCT,
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MEMBER
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}
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@members {
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private pendingClassBody = false;
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private pendingNamespaceBody = false;
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private clearPendingScopes(): void {
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this.pendingClassBody = false;
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this.pendingNamespaceBody = false;
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}
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}
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// Common fragments
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fragment WS_INLINE: [ \t]+;
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fragment DIGIT: [0-9];
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fragment LETTER: [A-Za-z_];
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fragment IDENT_PART: [A-Za-z0-9_\-];
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fragment NOT_DQUOTE: ~[""];
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// Comments and whitespace
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COMMENT: '%%' ~[\r\n]* -> skip;
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NEWLINE: ('\r'? '\n')+ { this.clearPendingScopes(); };
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WS: [ \t]+ -> skip;
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// Diagram title declaration
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CLASS_DIAGRAM_V2: 'classDiagram-v2' -> type(CLASS_DIAGRAM);
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CLASS_DIAGRAM: 'classDiagram';
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// Directions
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DIRECTION_TB: 'direction' WS_INLINE+ 'TB';
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DIRECTION_BT: 'direction' WS_INLINE+ 'BT';
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DIRECTION_LR: 'direction' WS_INLINE+ 'LR';
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DIRECTION_RL: 'direction' WS_INLINE+ 'RL';
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// Accessibility tokens
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ACC_TITLE: 'accTitle' WS_INLINE* ':' WS_INLINE* -> pushMode(ACC_TITLE_MODE);
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ACC_DESCR: 'accDescr' WS_INLINE* ':' WS_INLINE* -> pushMode(ACC_DESCR_MODE);
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ACC_DESCR_MULTI: 'accDescr' WS_INLINE* '{' -> pushMode(ACC_DESCR_MULTILINE_MODE);
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// Statements captured as raw lines for semantic handling in listener
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STYLE_LINE: 'style' WS_INLINE+ ~[\r\n]*;
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CLASSDEF_LINE: 'classDef' ~[\r\n]*;
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CSSCLASS_LINE: 'cssClass' ~[\r\n]*;
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CALLBACK_LINE: 'callback' ~[\r\n]*;
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CLICK_LINE: 'click' ~[\r\n]*;
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LINK_LINE: 'link' ~[\r\n]*;
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CALL_LINE: 'call' ~[\r\n]*;
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// Notes
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NOTE_FOR: 'note' WS_INLINE+ 'for';
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NOTE: 'note';
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// Keywords that affect block handling
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CLASS: 'class' { this.pendingClassBody = true; };
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NAMESPACE: 'namespace' { this.pendingNamespaceBody = true; };
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// Structural tokens
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STYLE_SEPARATOR: ':::';
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ANNOTATION_START: '<<';
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ANNOTATION_END: '>>';
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LBRACKET: '[';
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RBRACKET: ']';
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COMMA: ',';
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DOT: '.';
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EDGE_STATE: '[*]';
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GENERIC: '~' (~[~\r\n])+ '~';
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// Match strings without escape semantics to mirror Jison behavior
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// Allow any chars except an unescaped closing double-quote; permit newlines
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STRING: '"' NOT_DQUOTE* '"';
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BACKTICK_ID: '`' (~[`])* '`';
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LABEL: ':' (~[':\r\n;])*;
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RELATION_ARROW
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: (LEFT_HEAD)? LINE_BODY (RIGHT_HEAD)?
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;
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fragment LEFT_HEAD
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: '<|'
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| '<'
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| 'o'
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| '*'
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| '()'
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;
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fragment RIGHT_HEAD
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: '|>'
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| '>'
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| 'o'
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| '*'
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| '()'
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;
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fragment LINE_BODY
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: '--'
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| '..'
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;
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// Identifiers and numbers
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IDENTIFIER
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: (LETTER | DIGIT) IDENT_PART*
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;
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NUMBER: DIGIT+;
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PLUS: '+';
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MINUS: '-';
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HASH: '#';
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PERCENT: '%';
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STAR: '*';
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SLASH: '/';
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LPAREN: '(';
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RPAREN: ')';
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// Structural braces with mode management
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STRUCT_START
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: '{'
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{
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if (this.pendingClassBody) {
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this.pendingClassBody = false;
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this.pushMode(ClassLexer.CLASS_BODY);
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} else {
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if (this.pendingNamespaceBody) {
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this.pendingNamespaceBody = false;
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}
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this.pushMode(ClassLexer.BLOCK);
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}
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}
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||||
;
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||||
|
||||
STRUCT_END: '}' { /* default mode only */ };
|
||||
|
||||
// Default fallback (should not normally trigger)
|
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UNKNOWN: .;
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||||
// ===== Mode: ACC_TITLE =====
|
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mode ACC_TITLE_MODE;
|
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ACC_TITLE_MODE_WS: [ \t]+ -> skip;
|
||||
ACC_TITLE_VALUE: ~[\r\n;#]+ -> type(ACC_TITLE_VALUE), popMode;
|
||||
ACC_TITLE_MODE_NEWLINE: ('\r'? '\n')+ { this.popMode(); this.clearPendingScopes(); } -> type(NEWLINE);
|
||||
|
||||
// ===== Mode: ACC_DESCR =====
|
||||
mode ACC_DESCR_MODE;
|
||||
ACC_DESCR_MODE_WS: [ \t]+ -> skip;
|
||||
ACC_DESCR_VALUE: ~[\r\n;#]+ -> type(ACC_DESCR_VALUE), popMode;
|
||||
ACC_DESCR_MODE_NEWLINE: ('\r'? '\n')+ { this.popMode(); this.clearPendingScopes(); } -> type(NEWLINE);
|
||||
|
||||
// ===== Mode: ACC_DESCR_MULTILINE =====
|
||||
mode ACC_DESCR_MULTILINE_MODE;
|
||||
ACC_DESCR_MULTILINE_VALUE: (~[}])+ -> type(ACC_DESCR_MULTILINE_VALUE);
|
||||
ACC_DESCR_MULTI_END: '}' -> popMode, type(ACC_DESCR_MULTI_END);
|
||||
|
||||
// ===== Mode: CLASS_BODY =====
|
||||
mode CLASS_BODY;
|
||||
CLASS_BODY_WS: [ \t]+ -> skip;
|
||||
CLASS_BODY_COMMENT: '%%' ~[\r\n]* -> skip;
|
||||
CLASS_BODY_NEWLINE: ('\r'? '\n')+ -> type(NEWLINE);
|
||||
CLASS_BODY_STRUCT_END: '}' -> popMode, type(STRUCT_END);
|
||||
CLASS_BODY_OPEN_BRACE: '{' -> type(OPEN_IN_STRUCT);
|
||||
CLASS_BODY_EDGE_STATE: '[*]' -> type(EDGE_STATE);
|
||||
CLASS_BODY_MEMBER: ~[{}\r\n]+ -> type(MEMBER);
|
||||
|
||||
// ===== Mode: BLOCK =====
|
||||
mode BLOCK;
|
||||
BLOCK_WS: [ \t]+ -> skip;
|
||||
BLOCK_COMMENT: '%%' ~[\r\n]* -> skip;
|
||||
BLOCK_NEWLINE: ('\r'? '\n')+ -> type(NEWLINE);
|
||||
BLOCK_CLASS: 'class' { this.pendingClassBody = true; } -> type(CLASS);
|
||||
BLOCK_NAMESPACE: 'namespace' { this.pendingNamespaceBody = true; } -> type(NAMESPACE);
|
||||
BLOCK_STYLE_LINE: 'style' WS_INLINE+ ~[\r\n]* -> type(STYLE_LINE);
|
||||
BLOCK_CLASSDEF_LINE: 'classDef' ~[\r\n]* -> type(CLASSDEF_LINE);
|
||||
BLOCK_CSSCLASS_LINE: 'cssClass' ~[\r\n]* -> type(CSSCLASS_LINE);
|
||||
BLOCK_CALLBACK_LINE: 'callback' ~[\r\n]* -> type(CALLBACK_LINE);
|
||||
BLOCK_CLICK_LINE: 'click' ~[\r\n]* -> type(CLICK_LINE);
|
||||
BLOCK_LINK_LINE: 'link' ~[\r\n]* -> type(LINK_LINE);
|
||||
BLOCK_CALL_LINE: 'call' ~[\r\n]* -> type(CALL_LINE);
|
||||
BLOCK_NOTE_FOR: 'note' WS_INLINE+ 'for' -> type(NOTE_FOR);
|
||||
BLOCK_NOTE: 'note' -> type(NOTE);
|
||||
BLOCK_ACC_TITLE: 'accTitle' WS_INLINE* ':' WS_INLINE* -> type(ACC_TITLE), pushMode(ACC_TITLE_MODE);
|
||||
BLOCK_ACC_DESCR: 'accDescr' WS_INLINE* ':' WS_INLINE* -> type(ACC_DESCR), pushMode(ACC_DESCR_MODE);
|
||||
BLOCK_ACC_DESCR_MULTI: 'accDescr' WS_INLINE* '{' -> type(ACC_DESCR_MULTI), pushMode(ACC_DESCR_MULTILINE_MODE);
|
||||
BLOCK_STRUCT_START
|
||||
: '{'
|
||||
{
|
||||
if (this.pendingClassBody) {
|
||||
this.pendingClassBody = false;
|
||||
this.pushMode(ClassLexer.CLASS_BODY);
|
||||
} else {
|
||||
if (this.pendingNamespaceBody) {
|
||||
this.pendingNamespaceBody = false;
|
||||
}
|
||||
this.pushMode(ClassLexer.BLOCK);
|
||||
}
|
||||
}
|
||||
-> type(STRUCT_START)
|
||||
;
|
||||
BLOCK_STRUCT_END: '}' -> popMode, type(STRUCT_END);
|
||||
BLOCK_STYLE_SEPARATOR: ':::' -> type(STYLE_SEPARATOR);
|
||||
BLOCK_ANNOTATION_START: '<<' -> type(ANNOTATION_START);
|
||||
BLOCK_ANNOTATION_END: '>>' -> type(ANNOTATION_END);
|
||||
BLOCK_LBRACKET: '[' -> type(LBRACKET);
|
||||
BLOCK_RBRACKET: ']' -> type(RBRACKET);
|
||||
BLOCK_COMMA: ',' -> type(COMMA);
|
||||
BLOCK_DOT: '.' -> type(DOT);
|
||||
BLOCK_EDGE_STATE: '[*]' -> type(EDGE_STATE);
|
||||
BLOCK_GENERIC: '~' (~[~\r\n])+ '~' -> type(GENERIC);
|
||||
// Mirror Jison: no escape semantics inside strings in BLOCK mode as well
|
||||
BLOCK_STRING: '"' NOT_DQUOTE* '"' -> type(STRING);
|
||||
BLOCK_BACKTICK_ID: '`' (~[`])* '`' -> type(BACKTICK_ID);
|
||||
BLOCK_LABEL: ':' (~[':\r\n;])* -> type(LABEL);
|
||||
BLOCK_RELATION_ARROW
|
||||
: (LEFT_HEAD)? LINE_BODY (RIGHT_HEAD)?
|
||||
-> type(RELATION_ARROW)
|
||||
;
|
||||
BLOCK_IDENTIFIER: (LETTER | DIGIT) IDENT_PART* -> type(IDENTIFIER);
|
||||
BLOCK_NUMBER: DIGIT+ -> type(NUMBER);
|
||||
BLOCK_PLUS: '+' -> type(PLUS);
|
||||
BLOCK_MINUS: '-' -> type(MINUS);
|
||||
BLOCK_HASH: '#' -> type(HASH);
|
||||
BLOCK_PERCENT: '%' -> type(PERCENT);
|
||||
BLOCK_STAR: '*' -> type(STAR);
|
||||
BLOCK_SLASH: '/' -> type(SLASH);
|
||||
BLOCK_LPAREN: '(' -> type(LPAREN);
|
||||
BLOCK_RPAREN: ')' -> type(RPAREN);
|
||||
BLOCK_UNKNOWN: . -> type(UNKNOWN);
|
||||
204
packages/mermaid/src/diagrams/class/parser/antlr/ClassParser.g4
Normal file
204
packages/mermaid/src/diagrams/class/parser/antlr/ClassParser.g4
Normal file
@@ -0,0 +1,204 @@
|
||||
parser grammar ClassParser;
|
||||
|
||||
options {
|
||||
tokenVocab = ClassLexer;
|
||||
}
|
||||
|
||||
start
|
||||
: (NEWLINE)* classDiagramSection EOF
|
||||
;
|
||||
|
||||
classDiagramSection
|
||||
: CLASS_DIAGRAM (NEWLINE)+ document
|
||||
;
|
||||
|
||||
document
|
||||
: (line)* statement?
|
||||
;
|
||||
|
||||
line
|
||||
: statement? NEWLINE
|
||||
;
|
||||
|
||||
statement
|
||||
: classStatement
|
||||
| namespaceStatement
|
||||
| relationStatement
|
||||
| noteStatement
|
||||
| annotationStatement
|
||||
| memberStatement
|
||||
| classDefStatement
|
||||
| styleStatement
|
||||
| cssClassStatement
|
||||
| directionStatement
|
||||
| accTitleStatement
|
||||
| accDescrStatement
|
||||
| accDescrMultilineStatement
|
||||
| callbackStatement
|
||||
| clickStatement
|
||||
| linkStatement
|
||||
| callStatement
|
||||
;
|
||||
|
||||
classStatement
|
||||
: classIdentifier classStatementTail?
|
||||
;
|
||||
|
||||
classStatementTail
|
||||
: STRUCT_START classMembers? STRUCT_END
|
||||
| STYLE_SEPARATOR cssClassRef classStatementCssTail?
|
||||
;
|
||||
|
||||
classStatementCssTail
|
||||
: STRUCT_START classMembers? STRUCT_END
|
||||
;
|
||||
|
||||
classIdentifier
|
||||
: CLASS className classLabel?
|
||||
;
|
||||
|
||||
classLabel
|
||||
: LBRACKET stringLiteral RBRACKET
|
||||
;
|
||||
|
||||
cssClassRef
|
||||
: className
|
||||
| IDENTIFIER
|
||||
;
|
||||
|
||||
classMembers
|
||||
: (NEWLINE | classMember)*
|
||||
;
|
||||
|
||||
classMember
|
||||
: MEMBER
|
||||
| EDGE_STATE
|
||||
;
|
||||
|
||||
namespaceStatement
|
||||
: namespaceIdentifier namespaceBlock
|
||||
;
|
||||
|
||||
namespaceIdentifier
|
||||
: NAMESPACE namespaceName
|
||||
;
|
||||
|
||||
namespaceName
|
||||
: className
|
||||
;
|
||||
|
||||
namespaceBlock
|
||||
: STRUCT_START (NEWLINE)* namespaceBody? STRUCT_END
|
||||
;
|
||||
|
||||
namespaceBody
|
||||
: namespaceLine+
|
||||
;
|
||||
|
||||
namespaceLine
|
||||
: (classStatement | namespaceStatement)? NEWLINE
|
||||
| classStatement
|
||||
| namespaceStatement
|
||||
;
|
||||
|
||||
relationStatement
|
||||
: className relation className relationLabel?
|
||||
| className stringLiteral relation className relationLabel?
|
||||
| className relation stringLiteral className relationLabel?
|
||||
| className stringLiteral relation stringLiteral className relationLabel?
|
||||
;
|
||||
|
||||
relation
|
||||
: RELATION_ARROW
|
||||
;
|
||||
|
||||
relationLabel
|
||||
: LABEL
|
||||
;
|
||||
|
||||
noteStatement
|
||||
: NOTE_FOR className noteBody
|
||||
| NOTE noteBody
|
||||
;
|
||||
|
||||
noteBody
|
||||
: stringLiteral
|
||||
;
|
||||
|
||||
annotationStatement
|
||||
: ANNOTATION_START annotationName ANNOTATION_END className
|
||||
;
|
||||
|
||||
annotationName
|
||||
: IDENTIFIER
|
||||
| stringLiteral
|
||||
;
|
||||
|
||||
memberStatement
|
||||
: className LABEL
|
||||
;
|
||||
|
||||
classDefStatement
|
||||
: CLASSDEF_LINE
|
||||
;
|
||||
|
||||
styleStatement
|
||||
: STYLE_LINE
|
||||
;
|
||||
|
||||
cssClassStatement
|
||||
: CSSCLASS_LINE
|
||||
;
|
||||
|
||||
directionStatement
|
||||
: DIRECTION_TB
|
||||
| DIRECTION_BT
|
||||
| DIRECTION_LR
|
||||
| DIRECTION_RL
|
||||
;
|
||||
|
||||
accTitleStatement
|
||||
: ACC_TITLE ACC_TITLE_VALUE
|
||||
;
|
||||
|
||||
accDescrStatement
|
||||
: ACC_DESCR ACC_DESCR_VALUE
|
||||
;
|
||||
|
||||
accDescrMultilineStatement
|
||||
: ACC_DESCR_MULTI ACC_DESCR_MULTILINE_VALUE ACC_DESCR_MULTI_END
|
||||
;
|
||||
|
||||
callbackStatement
|
||||
: CALLBACK_LINE
|
||||
;
|
||||
|
||||
clickStatement
|
||||
: CLICK_LINE
|
||||
;
|
||||
|
||||
linkStatement
|
||||
: LINK_LINE
|
||||
;
|
||||
|
||||
callStatement
|
||||
: CALL_LINE
|
||||
;
|
||||
|
||||
stringLiteral
|
||||
: STRING
|
||||
;
|
||||
|
||||
className
|
||||
: classNameSegment (DOT classNameSegment)*
|
||||
;
|
||||
|
||||
classNameSegment
|
||||
: IDENTIFIER genericSuffix?
|
||||
| BACKTICK_ID genericSuffix?
|
||||
| EDGE_STATE
|
||||
;
|
||||
|
||||
genericSuffix
|
||||
: GENERIC
|
||||
;
|
||||
729
packages/mermaid/src/diagrams/class/parser/antlr/antlr-parser.ts
Normal file
729
packages/mermaid/src/diagrams/class/parser/antlr/antlr-parser.ts
Normal file
@@ -0,0 +1,729 @@
|
||||
import type { ParseTreeListener } from 'antlr4ng';
|
||||
import {
|
||||
BailErrorStrategy,
|
||||
CharStream,
|
||||
CommonTokenStream,
|
||||
ParseCancellationException,
|
||||
ParseTreeWalker,
|
||||
RecognitionException,
|
||||
type Token,
|
||||
} from 'antlr4ng';
|
||||
import {
|
||||
ClassParser,
|
||||
type ClassIdentifierContext,
|
||||
type ClassMembersContext,
|
||||
type ClassNameContext,
|
||||
type ClassNameSegmentContext,
|
||||
type ClassStatementContext,
|
||||
type NamespaceIdentifierContext,
|
||||
type RelationStatementContext,
|
||||
type NoteStatementContext,
|
||||
type AnnotationStatementContext,
|
||||
type MemberStatementContext,
|
||||
type ClassDefStatementContext,
|
||||
type StyleStatementContext,
|
||||
type CssClassStatementContext,
|
||||
type DirectionStatementContext,
|
||||
type AccTitleStatementContext,
|
||||
type AccDescrStatementContext,
|
||||
type AccDescrMultilineStatementContext,
|
||||
type CallbackStatementContext,
|
||||
type ClickStatementContext,
|
||||
type LinkStatementContext,
|
||||
type CallStatementContext,
|
||||
type CssClassRefContext,
|
||||
type StringLiteralContext,
|
||||
} from './generated/ClassParser.js';
|
||||
import { ClassParserListener } from './generated/ClassParserListener.js';
|
||||
import { ClassLexer } from './generated/ClassLexer.js';
|
||||
|
||||
type ClassDbLike = Record<string, any>;
|
||||
|
||||
const stripQuotes = (value: string): string => {
|
||||
const trimmed = value.trim();
|
||||
if (trimmed.length >= 2 && trimmed.startsWith('"') && trimmed.endsWith('"')) {
|
||||
try {
|
||||
return JSON.parse(trimmed.replace(/\r?\n/g, '\\n')) as string;
|
||||
} catch {
|
||||
return trimmed.slice(1, -1).replace(/\\"/g, '"');
|
||||
}
|
||||
}
|
||||
return trimmed;
|
||||
};
|
||||
|
||||
const stripBackticks = (value: string): string => {
|
||||
const trimmed = value.trim();
|
||||
if (trimmed.length >= 2 && trimmed.startsWith('`') && trimmed.endsWith('`')) {
|
||||
return trimmed.slice(1, -1);
|
||||
}
|
||||
return trimmed;
|
||||
};
|
||||
|
||||
const splitCommaSeparated = (text: string): string[] =>
|
||||
text
|
||||
.split(',')
|
||||
.map((part) => part.trim())
|
||||
.filter((part) => part.length > 0);
|
||||
|
||||
const getStringFromLiteral = (ctx: StringLiteralContext | undefined | null): string | undefined => {
|
||||
if (!ctx) {
|
||||
return undefined;
|
||||
}
|
||||
return stripQuotes(ctx.getText());
|
||||
};
|
||||
|
||||
const getClassNameText = (ctx: ClassNameContext): string => {
|
||||
const segments = ctx.classNameSegment();
|
||||
const parts: string[] = [];
|
||||
for (const segment of segments) {
|
||||
parts.push(getClassNameSegmentText(segment));
|
||||
}
|
||||
return parts.join('.');
|
||||
};
|
||||
|
||||
const getClassNameSegmentText = (ctx: ClassNameSegmentContext): string => {
|
||||
if (ctx.BACKTICK_ID()) {
|
||||
return stripBackticks(ctx.BACKTICK_ID()!.getText());
|
||||
}
|
||||
if (ctx.EDGE_STATE()) {
|
||||
return ctx.EDGE_STATE()!.getText();
|
||||
}
|
||||
return ctx.getText();
|
||||
};
|
||||
|
||||
const parseRelationArrow = (arrow: string, db: ClassDbLike) => {
|
||||
const relation = {
|
||||
type1: 'none',
|
||||
type2: 'none',
|
||||
lineType: db.lineType?.LINE ?? 0,
|
||||
};
|
||||
|
||||
const trimmed = arrow.trim();
|
||||
if (trimmed.includes('..')) {
|
||||
relation.lineType = db.lineType?.DOTTED_LINE ?? relation.lineType;
|
||||
}
|
||||
|
||||
const leftHeads: [string, keyof typeof db.relationType][] = [
|
||||
['<|', 'EXTENSION'],
|
||||
['()', 'LOLLIPOP'],
|
||||
['o', 'AGGREGATION'],
|
||||
['*', 'COMPOSITION'],
|
||||
['<', 'DEPENDENCY'],
|
||||
];
|
||||
|
||||
for (const [prefix, key] of leftHeads) {
|
||||
if (trimmed.startsWith(prefix)) {
|
||||
relation.type1 = db.relationType?.[key] ?? relation.type1;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
const rightHeads: [string, keyof typeof db.relationType][] = [
|
||||
['|>', 'EXTENSION'],
|
||||
['()', 'LOLLIPOP'],
|
||||
['o', 'AGGREGATION'],
|
||||
['*', 'COMPOSITION'],
|
||||
['>', 'DEPENDENCY'],
|
||||
];
|
||||
|
||||
for (const [suffix, key] of rightHeads) {
|
||||
if (trimmed.endsWith(suffix)) {
|
||||
relation.type2 = db.relationType?.[key] ?? relation.type2;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return relation;
|
||||
};
|
||||
|
||||
const parseStyleLine = (db: ClassDbLike, line: string) => {
|
||||
const trimmed = line.trim();
|
||||
const body = trimmed.slice('style'.length).trim();
|
||||
if (!body) {
|
||||
return;
|
||||
}
|
||||
const match = /^(\S+)(\s+.+)?$/.exec(body);
|
||||
if (!match) {
|
||||
return;
|
||||
}
|
||||
const classId = match[1];
|
||||
const styleBody = match[2]?.trim() ?? '';
|
||||
if (!styleBody) {
|
||||
return;
|
||||
}
|
||||
const styles = splitCommaSeparated(styleBody);
|
||||
if (styles.length) {
|
||||
db.setCssStyle?.(classId, styles);
|
||||
}
|
||||
};
|
||||
|
||||
const parseClassDefLine = (db: ClassDbLike, line: string) => {
|
||||
const trimmed = line.trim();
|
||||
const body = trimmed.slice('classDef'.length).trim();
|
||||
if (!body) {
|
||||
return;
|
||||
}
|
||||
const match = /^(\S+)(\s+.+)?$/.exec(body);
|
||||
if (!match) {
|
||||
return;
|
||||
}
|
||||
const idPart = match[1];
|
||||
const stylePart = match[2]?.trim() ?? '';
|
||||
const ids = splitCommaSeparated(idPart);
|
||||
const styles = stylePart ? splitCommaSeparated(stylePart) : [];
|
||||
db.defineClass?.(ids, styles);
|
||||
};
|
||||
|
||||
const parseCssClassLine = (db: ClassDbLike, line: string) => {
|
||||
const trimmed = line.trim();
|
||||
const body = trimmed.slice('cssClass'.length).trim();
|
||||
if (!body) {
|
||||
return;
|
||||
}
|
||||
const match = /^("[^"]*"|\S+)\s+(\S+)/.exec(body);
|
||||
if (!match) {
|
||||
return;
|
||||
}
|
||||
const idsRaw = stripQuotes(match[1]);
|
||||
const className = match[2];
|
||||
db.setCssClass?.(idsRaw, className);
|
||||
};
|
||||
|
||||
const parseCallbackLine = (db: ClassDbLike, line: string) => {
|
||||
const trimmed = line.trim();
|
||||
const match = /^callback\s+(\S+)\s+("[^"]*")(?:\s+("[^"]*"))?\s*$/.exec(trimmed);
|
||||
if (!match) {
|
||||
return;
|
||||
}
|
||||
const target = match[1];
|
||||
const fn = stripQuotes(match[2]);
|
||||
const tooltip = match[3] ? stripQuotes(match[3]) : undefined;
|
||||
db.setClickEvent?.(target, fn);
|
||||
if (tooltip) {
|
||||
db.setTooltip?.(target, tooltip);
|
||||
}
|
||||
};
|
||||
|
||||
const parseClickLine = (db: ClassDbLike, line: string) => {
|
||||
const trimmed = line.trim();
|
||||
const callMatch = /^click\s+(\S+)\s+call\s+([^(]+)\(([^)]*)\)(?:\s+("[^"]*"))?\s*$/.exec(trimmed);
|
||||
if (callMatch) {
|
||||
const target = callMatch[1];
|
||||
const fnName = callMatch[2].trim();
|
||||
const args = callMatch[3].trim();
|
||||
const tooltip = callMatch[4] ? stripQuotes(callMatch[4]) : undefined;
|
||||
if (args.length > 0) {
|
||||
db.setClickEvent?.(target, fnName, args);
|
||||
} else {
|
||||
db.setClickEvent?.(target, fnName);
|
||||
}
|
||||
if (tooltip) {
|
||||
db.setTooltip?.(target, tooltip);
|
||||
}
|
||||
return target;
|
||||
}
|
||||
|
||||
const hrefMatch = /^click\s+(\S+)\s+href\s+("[^"]*")(?:\s+("[^"]*"))?(?:\s+(\S+))?\s*$/.exec(
|
||||
trimmed
|
||||
);
|
||||
if (hrefMatch) {
|
||||
const target = hrefMatch[1];
|
||||
const url = stripQuotes(hrefMatch[2]);
|
||||
const tooltip = hrefMatch[3] ? stripQuotes(hrefMatch[3]) : undefined;
|
||||
const targetWindow = hrefMatch[4];
|
||||
if (targetWindow) {
|
||||
db.setLink?.(target, url, targetWindow);
|
||||
} else {
|
||||
db.setLink?.(target, url);
|
||||
}
|
||||
if (tooltip) {
|
||||
db.setTooltip?.(target, tooltip);
|
||||
}
|
||||
return target;
|
||||
}
|
||||
|
||||
const genericMatch = /^click\s+(\S+)\s+("[^"]*")(?:\s+("[^"]*"))?\s*$/.exec(trimmed);
|
||||
if (genericMatch) {
|
||||
const target = genericMatch[1];
|
||||
const link = stripQuotes(genericMatch[2]);
|
||||
const tooltip = genericMatch[3] ? stripQuotes(genericMatch[3]) : undefined;
|
||||
db.setLink?.(target, link);
|
||||
if (tooltip) {
|
||||
db.setTooltip?.(target, tooltip);
|
||||
}
|
||||
return target;
|
||||
}
|
||||
|
||||
return undefined;
|
||||
};
|
||||
|
||||
const parseLinkLine = (db: ClassDbLike, line: string) => {
|
||||
const trimmed = line.trim();
|
||||
const match = /^link\s+(\S+)\s+("[^"]*")(?:\s+("[^"]*"))?(?:\s+(\S+))?\s*$/.exec(trimmed);
|
||||
if (!match) {
|
||||
return;
|
||||
}
|
||||
const target = match[1];
|
||||
const href = stripQuotes(match[2]);
|
||||
const tooltip = match[3] ? stripQuotes(match[3]) : undefined;
|
||||
const targetWindow = match[4];
|
||||
|
||||
if (targetWindow) {
|
||||
db.setLink?.(target, href, targetWindow);
|
||||
} else {
|
||||
db.setLink?.(target, href);
|
||||
}
|
||||
if (tooltip) {
|
||||
db.setTooltip?.(target, tooltip);
|
||||
}
|
||||
};
|
||||
|
||||
const parseCallLine = (db: ClassDbLike, lastTarget: string | undefined, line: string) => {
|
||||
if (!lastTarget) {
|
||||
return;
|
||||
}
|
||||
const trimmed = line.trim();
|
||||
const match = /^call\s+([^(]+)\(([^)]*)\)\s*("[^"]*")?\s*$/.exec(trimmed);
|
||||
if (!match) {
|
||||
return;
|
||||
}
|
||||
const fnName = match[1].trim();
|
||||
const args = match[2].trim();
|
||||
const tooltip = match[3] ? stripQuotes(match[3]) : undefined;
|
||||
if (args.length > 0) {
|
||||
db.setClickEvent?.(lastTarget, fnName, args);
|
||||
} else {
|
||||
db.setClickEvent?.(lastTarget, fnName);
|
||||
}
|
||||
if (tooltip) {
|
||||
db.setTooltip?.(lastTarget, tooltip);
|
||||
}
|
||||
};
|
||||
|
||||
interface NamespaceFrame {
|
||||
name?: string;
|
||||
classes: string[];
|
||||
}
|
||||
|
||||
class ClassDiagramParseListener extends ClassParserListener implements ParseTreeListener {
|
||||
private readonly classNames = new WeakMap<ClassIdentifierContext, string>();
|
||||
private readonly memberLists = new WeakMap<ClassMembersContext, string[]>();
|
||||
private readonly namespaceStack: NamespaceFrame[] = [];
|
||||
private lastClickTarget?: string;
|
||||
|
||||
constructor(private readonly db: ClassDbLike) {
|
||||
super();
|
||||
}
|
||||
|
||||
private recordClassInCurrentNamespace(name: string) {
|
||||
const current = this.namespaceStack[this.namespaceStack.length - 1];
|
||||
if (current?.name) {
|
||||
current.classes.push(name);
|
||||
}
|
||||
}
|
||||
|
||||
override enterNamespaceStatement = (): void => {
|
||||
this.namespaceStack.push({ classes: [] });
|
||||
};
|
||||
|
||||
override exitNamespaceIdentifier = (ctx: NamespaceIdentifierContext): void => {
|
||||
const frame = this.namespaceStack[this.namespaceStack.length - 1];
|
||||
if (!frame) {
|
||||
return;
|
||||
}
|
||||
const classNameCtx = ctx.namespaceName()?.className();
|
||||
if (!classNameCtx) {
|
||||
return;
|
||||
}
|
||||
const name = getClassNameText(classNameCtx);
|
||||
frame.name = name;
|
||||
this.db.addNamespace?.(name);
|
||||
};
|
||||
|
||||
override exitNamespaceStatement = (): void => {
|
||||
const frame = this.namespaceStack.pop();
|
||||
if (!frame?.name) {
|
||||
return;
|
||||
}
|
||||
if (frame.classes.length) {
|
||||
this.db.addClassesToNamespace?.(frame.name, frame.classes);
|
||||
}
|
||||
};
|
||||
|
||||
override exitClassIdentifier = (ctx: ClassIdentifierContext): void => {
|
||||
const id = getClassNameText(ctx.className());
|
||||
this.classNames.set(ctx, id);
|
||||
this.db.addClass?.(id);
|
||||
this.recordClassInCurrentNamespace(id);
|
||||
|
||||
const labelCtx = ctx.classLabel?.();
|
||||
if (labelCtx) {
|
||||
const label = getStringFromLiteral(labelCtx.stringLiteral());
|
||||
if (label !== undefined) {
|
||||
this.db.setClassLabel?.(id, label);
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
override exitClassMembers = (ctx: ClassMembersContext): void => {
|
||||
const members: string[] = [];
|
||||
for (const memberCtx of ctx.classMember() ?? []) {
|
||||
if (memberCtx.MEMBER()) {
|
||||
members.push(memberCtx.MEMBER()!.getText());
|
||||
} else if (memberCtx.EDGE_STATE()) {
|
||||
members.push(memberCtx.EDGE_STATE()!.getText());
|
||||
}
|
||||
}
|
||||
members.reverse();
|
||||
this.memberLists.set(ctx, members);
|
||||
};
|
||||
|
||||
override exitClassStatement = (ctx: ClassStatementContext): void => {
|
||||
const identifierCtx = ctx.classIdentifier();
|
||||
if (!identifierCtx) {
|
||||
return;
|
||||
}
|
||||
const classId = this.classNames.get(identifierCtx);
|
||||
if (!classId) {
|
||||
return;
|
||||
}
|
||||
|
||||
const tailCtx = ctx.classStatementTail?.();
|
||||
const cssRefCtx = tailCtx?.cssClassRef?.();
|
||||
if (cssRefCtx) {
|
||||
const cssTarget = this.resolveCssClassRef(cssRefCtx);
|
||||
if (cssTarget) {
|
||||
this.db.setCssClass?.(classId, cssTarget);
|
||||
}
|
||||
}
|
||||
|
||||
const memberContexts: ClassMembersContext[] = [];
|
||||
const cm1 = tailCtx?.classMembers();
|
||||
if (cm1) {
|
||||
memberContexts.push(cm1);
|
||||
}
|
||||
const cssTailCtx = tailCtx?.classStatementCssTail?.();
|
||||
const cm2 = cssTailCtx?.classMembers();
|
||||
if (cm2) {
|
||||
memberContexts.push(cm2);
|
||||
}
|
||||
|
||||
for (const membersCtx of memberContexts) {
|
||||
const members = this.memberLists.get(membersCtx) ?? [];
|
||||
if (members.length) {
|
||||
this.db.addMembers?.(classId, members);
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
private resolveCssClassRef(ctx: CssClassRefContext): string | undefined {
|
||||
if (ctx.className()) {
|
||||
return getClassNameText(ctx.className()!);
|
||||
}
|
||||
if (ctx.IDENTIFIER()) {
|
||||
return ctx.IDENTIFIER()!.getText();
|
||||
}
|
||||
return undefined;
|
||||
}
|
||||
|
||||
override exitRelationStatement = (ctx: RelationStatementContext): void => {
|
||||
const classNames = ctx.className();
|
||||
if (classNames.length < 2) {
|
||||
return;
|
||||
}
|
||||
const id1 = getClassNameText(classNames[0]);
|
||||
const id2 = getClassNameText(classNames[classNames.length - 1]);
|
||||
|
||||
const arrow = ctx.relation()?.getText() ?? '';
|
||||
const relation = parseRelationArrow(arrow, this.db);
|
||||
|
||||
let relationTitle1 = 'none';
|
||||
let relationTitle2 = 'none';
|
||||
const stringLiterals = ctx.stringLiteral();
|
||||
if (stringLiterals.length === 1 && ctx.children) {
|
||||
const stringCtx = stringLiterals[0];
|
||||
const children = ctx.children as unknown[];
|
||||
const stringIndex = children.indexOf(stringCtx);
|
||||
const relationCtx = ctx.relation();
|
||||
const relationIndex = relationCtx ? children.indexOf(relationCtx) : -1;
|
||||
if (relationIndex >= 0 && stringIndex >= 0 && stringIndex < relationIndex) {
|
||||
relationTitle1 = getStringFromLiteral(stringCtx) ?? 'none';
|
||||
} else {
|
||||
relationTitle2 = getStringFromLiteral(stringCtx) ?? 'none';
|
||||
}
|
||||
} else if (stringLiterals.length >= 2) {
|
||||
relationTitle1 = getStringFromLiteral(stringLiterals[0]) ?? 'none';
|
||||
relationTitle2 = getStringFromLiteral(stringLiterals[1]) ?? 'none';
|
||||
}
|
||||
|
||||
let title = 'none';
|
||||
const labelCtx = ctx.relationLabel?.();
|
||||
if (labelCtx?.LABEL()) {
|
||||
title = this.db.cleanupLabel?.(labelCtx.LABEL().getText()) ?? 'none';
|
||||
}
|
||||
|
||||
this.db.addRelation?.({
|
||||
id1,
|
||||
id2,
|
||||
relation,
|
||||
relationTitle1,
|
||||
relationTitle2,
|
||||
title,
|
||||
});
|
||||
};
|
||||
|
||||
override exitNoteStatement = (ctx: NoteStatementContext): void => {
|
||||
const noteCtx = ctx.noteBody();
|
||||
const literalText = noteCtx?.getText?.();
|
||||
const text = literalText !== undefined ? stripQuotes(literalText) : undefined;
|
||||
if (text === undefined) {
|
||||
return;
|
||||
}
|
||||
if (ctx.NOTE_FOR()) {
|
||||
const className = getClassNameText(ctx.className()!);
|
||||
this.db.addNote?.(text, className);
|
||||
} else {
|
||||
this.db.addNote?.(text);
|
||||
}
|
||||
};
|
||||
|
||||
override exitAnnotationStatement = (ctx: AnnotationStatementContext): void => {
|
||||
const className = getClassNameText(ctx.className());
|
||||
const nameCtx = ctx.annotationName();
|
||||
let annotation: string | undefined;
|
||||
if (nameCtx.IDENTIFIER()) {
|
||||
annotation = nameCtx.IDENTIFIER()!.getText();
|
||||
} else {
|
||||
annotation = getStringFromLiteral(nameCtx.stringLiteral());
|
||||
}
|
||||
if (annotation !== undefined) {
|
||||
this.db.addAnnotation?.(className, annotation);
|
||||
}
|
||||
};
|
||||
|
||||
override exitMemberStatement = (ctx: MemberStatementContext): void => {
|
||||
const className = getClassNameText(ctx.className());
|
||||
const labelToken = ctx.LABEL();
|
||||
if (!labelToken) {
|
||||
return;
|
||||
}
|
||||
const cleaned = this.db.cleanupLabel?.(labelToken.getText()) ?? labelToken.getText();
|
||||
this.db.addMember?.(className, cleaned);
|
||||
};
|
||||
|
||||
override exitClassDefStatement = (ctx: ClassDefStatementContext): void => {
|
||||
const token = ctx.CLASSDEF_LINE()?.getSymbol()?.text;
|
||||
if (token) {
|
||||
parseClassDefLine(this.db, token);
|
||||
}
|
||||
};
|
||||
|
||||
override exitStyleStatement = (ctx: StyleStatementContext): void => {
|
||||
const token = ctx.STYLE_LINE()?.getSymbol()?.text;
|
||||
if (token) {
|
||||
parseStyleLine(this.db, token);
|
||||
}
|
||||
};
|
||||
|
||||
override exitCssClassStatement = (ctx: CssClassStatementContext): void => {
|
||||
const token = ctx.CSSCLASS_LINE()?.getSymbol()?.text;
|
||||
if (token) {
|
||||
parseCssClassLine(this.db, token);
|
||||
}
|
||||
};
|
||||
|
||||
override exitDirectionStatement = (ctx: DirectionStatementContext): void => {
|
||||
if (ctx.DIRECTION_TB()) {
|
||||
this.db.setDirection?.('TB');
|
||||
} else if (ctx.DIRECTION_BT()) {
|
||||
this.db.setDirection?.('BT');
|
||||
} else if (ctx.DIRECTION_LR()) {
|
||||
this.db.setDirection?.('LR');
|
||||
} else if (ctx.DIRECTION_RL()) {
|
||||
this.db.setDirection?.('RL');
|
||||
}
|
||||
};
|
||||
|
||||
override exitAccTitleStatement = (ctx: AccTitleStatementContext): void => {
|
||||
const value = ctx.ACC_TITLE_VALUE()?.getText();
|
||||
if (value !== undefined) {
|
||||
this.db.setAccTitle?.(value.trim());
|
||||
}
|
||||
};
|
||||
|
||||
override exitAccDescrStatement = (ctx: AccDescrStatementContext): void => {
|
||||
const value = ctx.ACC_DESCR_VALUE()?.getText();
|
||||
if (value !== undefined) {
|
||||
this.db.setAccDescription?.(value.trim());
|
||||
}
|
||||
};
|
||||
|
||||
override exitAccDescrMultilineStatement = (ctx: AccDescrMultilineStatementContext): void => {
|
||||
const value = ctx.ACC_DESCR_MULTILINE_VALUE()?.getText();
|
||||
if (value !== undefined) {
|
||||
this.db.setAccDescription?.(value.trim());
|
||||
}
|
||||
};
|
||||
|
||||
override exitCallbackStatement = (ctx: CallbackStatementContext): void => {
|
||||
const token = ctx.CALLBACK_LINE()?.getSymbol()?.text;
|
||||
if (token) {
|
||||
parseCallbackLine(this.db, token);
|
||||
}
|
||||
};
|
||||
|
||||
override exitClickStatement = (ctx: ClickStatementContext): void => {
|
||||
const token = ctx.CLICK_LINE()?.getSymbol()?.text;
|
||||
if (!token) {
|
||||
return;
|
||||
}
|
||||
const target = parseClickLine(this.db, token);
|
||||
if (target) {
|
||||
this.lastClickTarget = target;
|
||||
}
|
||||
};
|
||||
|
||||
override exitLinkStatement = (ctx: LinkStatementContext): void => {
|
||||
const token = ctx.LINK_LINE()?.getSymbol()?.text;
|
||||
if (token) {
|
||||
parseLinkLine(this.db, token);
|
||||
}
|
||||
};
|
||||
|
||||
override exitCallStatement = (ctx: CallStatementContext): void => {
|
||||
const token = ctx.CALL_LINE()?.getSymbol()?.text;
|
||||
if (token) {
|
||||
parseCallLine(this.db, this.lastClickTarget, token);
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
class ANTLRClassParser {
|
||||
yy: ClassDbLike | null = null;
|
||||
|
||||
parse(input: string): unknown {
|
||||
if (!this.yy) {
|
||||
throw new Error('Class ANTLR parser missing yy (database).');
|
||||
}
|
||||
|
||||
this.yy.clear?.();
|
||||
|
||||
const inputStream = CharStream.fromString(input);
|
||||
const lexer = new ClassLexer(inputStream);
|
||||
const tokenStream = new CommonTokenStream(lexer);
|
||||
const parser = new ClassParser(tokenStream);
|
||||
|
||||
const anyParser = parser as unknown as {
|
||||
getErrorHandler?: () => unknown;
|
||||
setErrorHandler?: (handler: unknown) => void;
|
||||
errorHandler?: unknown;
|
||||
};
|
||||
const currentHandler = anyParser.getErrorHandler?.() ?? anyParser.errorHandler;
|
||||
const handlerName = (currentHandler as { constructor?: { name?: string } } | undefined)
|
||||
?.constructor?.name;
|
||||
if (!currentHandler || handlerName !== 'BailErrorStrategy') {
|
||||
if (typeof anyParser.setErrorHandler === 'function') {
|
||||
anyParser.setErrorHandler(new BailErrorStrategy());
|
||||
} else {
|
||||
(parser as unknown as { errorHandler: unknown }).errorHandler = new BailErrorStrategy();
|
||||
}
|
||||
}
|
||||
|
||||
try {
|
||||
const tree = parser.start();
|
||||
const listener = new ClassDiagramParseListener(this.yy);
|
||||
ParseTreeWalker.DEFAULT.walk(listener, tree);
|
||||
return tree;
|
||||
} catch (error) {
|
||||
throw this.transformParseError(error, parser);
|
||||
}
|
||||
}
|
||||
|
||||
private transformParseError(error: unknown, parser: ClassParser): Error {
|
||||
const recognitionError = this.unwrapRecognitionError(error);
|
||||
const offendingToken = this.resolveOffendingToken(recognitionError, parser);
|
||||
const line = offendingToken?.line ?? 0;
|
||||
const column = offendingToken?.column ?? 0;
|
||||
const message = `Parse error on line ${line}: Expecting 'STR'`;
|
||||
const cause = error instanceof Error ? error : undefined;
|
||||
const formatted = cause ? new Error(message, { cause }) : new Error(message);
|
||||
|
||||
Object.assign(formatted, {
|
||||
hash: {
|
||||
line,
|
||||
loc: {
|
||||
first_line: line,
|
||||
last_line: line,
|
||||
first_column: column,
|
||||
last_column: column,
|
||||
},
|
||||
text: offendingToken?.text ?? '',
|
||||
},
|
||||
});
|
||||
|
||||
return formatted;
|
||||
}
|
||||
|
||||
private unwrapRecognitionError(error: unknown): RecognitionException | undefined {
|
||||
if (!error) {
|
||||
return undefined;
|
||||
}
|
||||
if (error instanceof RecognitionException) {
|
||||
return error;
|
||||
}
|
||||
if (error instanceof ParseCancellationException) {
|
||||
const cause = (error as { cause?: unknown }).cause;
|
||||
if (cause instanceof RecognitionException) {
|
||||
return cause;
|
||||
}
|
||||
}
|
||||
if (typeof error === 'object' && error !== null && 'cause' in error) {
|
||||
const cause = (error as { cause?: unknown }).cause;
|
||||
if (cause instanceof RecognitionException) {
|
||||
return cause;
|
||||
}
|
||||
}
|
||||
return undefined;
|
||||
}
|
||||
|
||||
private resolveOffendingToken(
|
||||
error: RecognitionException | undefined,
|
||||
parser: ClassParser
|
||||
): Token | undefined {
|
||||
const candidate = (error as { offendingToken?: Token })?.offendingToken;
|
||||
if (candidate) {
|
||||
return candidate;
|
||||
}
|
||||
|
||||
const current = (
|
||||
parser as unknown as { getCurrentToken?: () => Token | undefined }
|
||||
).getCurrentToken?.();
|
||||
if (current) {
|
||||
return current;
|
||||
}
|
||||
|
||||
const stream = (
|
||||
parser as unknown as { _input?: { LT?: (offset: number) => Token | undefined } }
|
||||
)._input;
|
||||
return stream?.LT?.(1);
|
||||
}
|
||||
}
|
||||
|
||||
const parserInstance = new ANTLRClassParser();
|
||||
|
||||
const exportedParser = {
|
||||
parse: (text: string) => parserInstance.parse(text),
|
||||
parser: parserInstance,
|
||||
yy: null as ClassDbLike | null,
|
||||
};
|
||||
|
||||
Object.defineProperty(exportedParser, 'yy', {
|
||||
get() {
|
||||
return parserInstance.yy;
|
||||
},
|
||||
set(value: ClassDbLike | null) {
|
||||
parserInstance.yy = value;
|
||||
},
|
||||
});
|
||||
|
||||
export default exportedParser;
|
||||
31
packages/mermaid/src/diagrams/class/parser/classParser.ts
Normal file
31
packages/mermaid/src/diagrams/class/parser/classParser.ts
Normal file
@@ -0,0 +1,31 @@
|
||||
// @ts-ignore: JISON parser lacks type definitions
|
||||
import jisonParser from './classDiagram.jison';
|
||||
import antlrParser from './antlr/antlr-parser.js';
|
||||
|
||||
const USE_ANTLR_PARSER = process.env.USE_ANTLR_PARSER === 'true';
|
||||
|
||||
const baseParser: any = USE_ANTLR_PARSER ? antlrParser : jisonParser;
|
||||
|
||||
const selectedParser: any = Object.create(baseParser);
|
||||
|
||||
selectedParser.parse = (source: string): unknown => {
|
||||
const normalized = source.replace(/\r\n/g, '\n');
|
||||
if (USE_ANTLR_PARSER) {
|
||||
return antlrParser.parse(normalized);
|
||||
}
|
||||
return jisonParser.parse(normalized);
|
||||
};
|
||||
|
||||
Object.defineProperty(selectedParser, 'yy', {
|
||||
get() {
|
||||
return baseParser.yy;
|
||||
},
|
||||
set(value) {
|
||||
baseParser.yy = value;
|
||||
},
|
||||
enumerable: true,
|
||||
configurable: true,
|
||||
});
|
||||
|
||||
export default selectedParser;
|
||||
export const parser = selectedParser;
|
||||
Reference in New Issue
Block a user