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Revert: Update transpiler.js

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multipleof4
2025-09-26 01:04:44 -07:00
parent c34adf2c94
commit 227e690486
1 changed files with 10 additions and 42 deletions
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transpiler.js
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@@ -1,50 +1,18 @@
/**
* Transpiles a string of Hi source code into JavaScript.
* This is a foundational, regex-based implementation.
* It will be replaced by a proper AST-based generator in the future.
* @param {string} sourceCode The Hi source code.
* @returns {string} The equivalent JavaScript code.
*/
export function hi2js(sourceCode) {
// This will be replaced by a proper AST-based generator.
return sourceCode
// Preserve comments
.replace(/^\s*\/\/.*/gm, match => match)
// Function Declaration: name: (params) { body }
.replace(/^([\w$]+)\s*:\s*\(([^)]*)\)\s*\{([\s\S]*?)\s*\}/gm, (match, name, params, body) => {
const expressions = body.trim().split('\n').map(l => l.trim()).filter(Boolean);
const lastExpression = expressions.pop() || 'undefined';
const functionBody = [...expressions, `return ${lastExpression}`].join(';\n ');
return `let ${name} = (${params}) => {\n ${functionBody};\n};`;
})
// Block (Object) Declaration: name: { members }
.replace(/^([\w$]+)\s*:\s*\{([\s\S]*?)\s*\}/gm, (match, name, members) => {
const jsMembers = members
.trim()
.split('\n')
.map(line => line.trim().replace(/^([\w$]+)\s*:\s*(.*)$/, '$1: $2'))
.join(',\n ');
return `let ${name} = {\n ${jsMembers}\n};`;
})
// Simple Declaration: name: value
.replace(/^([\w$]+)\s*:\s*(.*)/gm, 'let $1 = $2;')
// Assignment: name = value
.replace(/^([\w$]+)\s*=\s*([^:;].*)/gm, '$1 = $2;')
// Global output: _(...)
.replace(/^\s*_\((.*)\)/gm, 'console.log($1);')
// Semicolon insertion for remaining expressions
.split('\n')
.map(line => {
const trimmed = line.trim();
if (trimmed.length > 0 && !trimmed.endsWith(';') && !trimmed.endsWith('{') && !trimmed.endsWith('}') && !trimmed.startsWith('//')) {
return line + ';';
}
return line;
})
.join('\n');
// Comments: // ...
.replace(/^\s*\/\/.*/gm, (match) => match)
// Declaration: name: value -> let name = value;
.replace(/^(?!.*\/\/.*)([\w$]+)\s*:\s*(.*)/gm, 'let $1 = $2;')
// Assignment: name = value -> name = value;
.replace(/^(?!.*\/\/.*)([\w$]+)\s*=\s*([^:;].*)/gm, '$1 = $2;')
// Global output: _(...) -> console.log(...);
.replace(/^(?!.*\/\/.*)\s*_\((.*)\)/gm, 'console.log($1);');
}