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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,11 @@ | ||
| { | ||
| "presets": [ | ||
| [ "@babel/preset-env" , | ||
| { | ||
| "targets": { | ||
| "esmodules": true | ||
| } | ||
| } | ||
| ] | ||
| ] | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,5 @@ | ||
| { | ||
| "watch": ["src"], | ||
| "ext": "js", | ||
| "exec": "babel-node ./src/main.js" | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,14 +1,20 @@ | ||
| { | ||
| "name": "typescriptPRT", | ||
| "version": "1.0.0", | ||
| "main": "index.js", | ||
| "main": "main.js", | ||
| "license": "MIT", | ||
| "devDependencies": { | ||
| "@types/node": "^12.0.10", | ||
| "typescript": "^3.5.2", | ||
| "ts-node": "^8.3.0" | ||
| "@babel/node": "^7.4.5", | ||
| "@babel/preset-env": "^7.4.5", | ||
| "nodemon": "^1.19.1", | ||
| "typescript": "^3.5.2" | ||
| }, | ||
| "scripts": { | ||
| "dev": "ts-node ./src/main.ts" | ||
| "start": "babel-node ./src/main.js", | ||
| "dev": "nodemon" | ||
| }, | ||
| "dependencies": { | ||
| "@babel/core": "^7.4.5", | ||
| "chevrotain": "^4.8.1" | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,34 @@ | ||
| import Parser from "./Parser"; | ||
|
|
||
| const parserInstance = new Parser(); | ||
| const BaseVisitor = parserInstance.getBaseCstVisitorConstructor(); | ||
|
|
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| export default class Visitor extends BaseVisitor { | ||
|
|
||
| /** | ||
| * @returns {string} | ||
| */ | ||
| getImage(contextNode) { | ||
| return contextNode[0].image | ||
| } | ||
|
|
||
| /** | ||
| * @return {Array} | ||
| */ | ||
| createOrPush(arr, id, value) { | ||
| arr[id] = arr[id] ? arr[id] : [] | ||
| arr[id].push(value) | ||
|
|
||
| return arr; | ||
| } | ||
|
|
||
| /** | ||
| * @return {Array} | ||
| */ | ||
| visitAll(contextNode){ | ||
| return contextNode | ||
| ? contextNode.map(node => this.visit(node)) | ||
| : [] | ||
| } | ||
|
|
||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,144 @@ | ||
| import { CstParser, IToken } from "chevrotain"; | ||
| import { | ||
| TRUE, | ||
| FALSE, | ||
| NULL, | ||
| L_CURLY, | ||
| R_CURLY, | ||
| L_SQUARE, | ||
| R_SQUARE, | ||
| L_PAREN, | ||
| R_PAREN, | ||
| COMMA, | ||
| COLON, | ||
| STRING_LITERAL, | ||
| NUMBER_LITERAL, | ||
| UNARY_OPERATOR, | ||
| ADDITIVE_OPERATOR, | ||
| PLUS, | ||
| MINUS, | ||
| MULTIPLICATIVE_OPERATOR, | ||
| ASTERISK, | ||
| SLASH, | ||
| EQUALITY_OPERATOR, | ||
| EQUAL, | ||
| FAT_ARROW, | ||
| FUNCTION_WORD, | ||
| RETURN_WORD, | ||
| WHITE_SPACE, | ||
| IDENTIFIER, | ||
| ALL_TOKENS | ||
| } from "./Tokens"; | ||
|
|
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| export default class PRTParser extends CstParser { | ||
| constructor(input) { | ||
| super(ALL_TOKENS); | ||
| if (input) { | ||
| this.input = input; | ||
| } | ||
|
|
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| const $ = this; | ||
|
|
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| $.RULE("program", () => { | ||
| $.MANY(() => { | ||
| $.SUBRULE($.declaration); | ||
| }); | ||
| }); | ||
|
|
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| $.RULE("declaration", () => { | ||
| $.CONSUME(IDENTIFIER, { LABEL: "functionName" }); | ||
| $.CONSUME(L_PAREN); | ||
| $.MANY_SEP({ | ||
| SEP: COMMA, | ||
| DEF: () => { | ||
| $.SUBRULE($.value, { ARGS: [true], LABEL: "params" }); | ||
| } | ||
| }); | ||
| $.CONSUME(R_PAREN); | ||
| $.CONSUME(RETURN_WORD); | ||
| $.SUBRULE($.expression, { LABEL: "body" }); | ||
| }); | ||
|
|
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| $.RULE("expression", () => { | ||
| $.SUBRULE($.value, { LABEL: "left" }); | ||
| $.OPTION(() => { | ||
| $.SUBRULE($.mathExpression, { LABEL: "right" }); | ||
| }); | ||
| }); | ||
|
|
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| $.RULE("mathExpression", () => { | ||
| $.SUBRULE($.binaryOperator, { LABEL: "operator" }); | ||
| $.SUBRULE($.expression, { LABEL: "right" }); | ||
| }); | ||
|
|
||
| $.RULE("value", (isFunctionPermited = false) => { | ||
| $.OR([ | ||
| { | ||
| GATE: isFunctionPermited, | ||
| ALT: () => { | ||
| $.SUBRULE($.functionCall); | ||
| } | ||
| }, | ||
| { | ||
| ALT: () => { | ||
| $.CONSUME(NUMBER_LITERAL); | ||
| } | ||
| }, | ||
| { | ||
| ALT: () => { | ||
| $.CONSUME(STRING_LITERAL); | ||
| } | ||
| }, | ||
| { | ||
| ALT: () => { | ||
| $.CONSUME(TRUE); | ||
| } | ||
| }, | ||
| { | ||
| ALT: () => { | ||
| $.CONSUME(FALSE); | ||
| } | ||
| }, | ||
| { | ||
| ALT: () => { | ||
| $.CONSUME(NULL); | ||
| } | ||
| }, | ||
| { | ||
| ALT: () => { | ||
| $.CONSUME2(IDENTIFIER); | ||
| } | ||
| } | ||
| ]); | ||
| }); | ||
|
|
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| $.RULE("binaryOperator", () => { | ||
| $.OR([ | ||
| { | ||
| ALT: () => { | ||
| $.CONSUME(ADDITIVE_OPERATOR, { LABEL: "operator"}); | ||
| } | ||
| }, | ||
| { | ||
| ALT: () => { | ||
| $.CONSUME(MULTIPLICATIVE_OPERATOR, { LABEL: "operator"}); | ||
| } | ||
| } | ||
| ]); | ||
| }); | ||
|
|
||
| $.RULE("functionCall", () => { | ||
| $.CONSUME(IDENTIFIER); | ||
| $.CONSUME(L_PAREN); | ||
| $.MANY_SEP({ | ||
| SEP: COMMA, | ||
| DEF: () => { | ||
| $.SUBRULE($.expression, { LABEL: "functionArguments" }); | ||
| } | ||
| }); | ||
| $.CONSUME(R_PAREN); | ||
| }); | ||
|
|
||
| this.performSelfAnalysis(); | ||
| } | ||
| } |
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