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| // Using Esprima, a ECMAScript parser written in ECMAScript | |
| // var esprima = require('esprima'); | |
| // var program = 'const answer = 42'; | |
| // Syntax | |
| { | |
| "type": "Program", | |
| "body": [ | |
| { | |
| "type": "VariableDeclaration", | |
| "declarations": [ | |
| { | |
| "type": "VariableDeclarator", | |
| "id": { | |
| "type": "Identifier", | |
| "name": "result" | |
| }, | |
| "init": { | |
| "type": "BinaryExpression", | |
| "operator": "+", | |
| "left": { | |
| "type": "Literal", | |
| "value": 5, | |
| "raw": "5" | |
| }, | |
| "right": { | |
| "type": "BinaryExpression", | |
| "operator": "*", | |
| "left": { | |
| "type": "Literal", | |
| "value": 1, | |
| "raw": "1" | |
| }, | |
| "right": { | |
| "type": "Literal", | |
| "value": 12, | |
| "raw": "12" | |
| } | |
| } | |
| } | |
| } | |
| ], | |
| "kind": "var" | |
| } | |
| ], | |
| "sourceType": "script" | |
| } | |
| // Token List | |
| [ | |
| { | |
| "type": "Keyword", | |
| "value": "var" | |
| }, | |
| { | |
| "type": "Identifier", | |
| "value": "result" | |
| }, | |
| { | |
| "type": "Punctuator", | |
| "value": "=" | |
| }, | |
| { | |
| "type": "Numeric", | |
| "value": "5" | |
| }, | |
| { | |
| "type": "Punctuator", | |
| "value": "+" | |
| }, | |
| { | |
| "type": "Punctuator", | |
| "value": "(" | |
| }, | |
| { | |
| "type": "Numeric", | |
| "value": "1" | |
| }, | |
| { | |
| "type": "Punctuator", | |
| "value": "*" | |
| }, | |
| { | |
| "type": "Numeric", | |
| "value": "12" | |
| }, | |
| { | |
| "type": "Punctuator", | |
| "value": ")" | |
| }, | |
| { | |
| "type": "Punctuator", | |
| "value": ";" | |
| } | |
| ] |
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