Got parser working. now i'm switching from toy language to CG syntax. lexer is... done??? maybe

This commit is contained in:
Dustin Swan 2026-01-31 16:07:44 -07:00
parent f74d374555
commit 71237d0307
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GPG key ID: 30D46587E2100467
3 changed files with 312 additions and 132 deletions

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@ -2,6 +2,7 @@ import { evaluate } from './interpreter'
import type { AST } from './ast'
import type { Env } from './env'
import { tokenize } from './lexer'
import { Parser } from './parser'
const ast: AST = {
kind: 'binaryop',
@ -26,52 +27,28 @@ const ast: AST = {
const env: Env = new Map();
const res = evaluate(ast, env);
// const res = evaluate(ast, env);
console.log(res);
// console.log(res);
const ast2: AST = {
kind: 'let',
name: 'add',
value: {
kind: 'lambda',
params: ['x', 'y'],
body: {
kind: 'binaryop',
operator: '+',
left: {
kind: 'variable',
name: 'x',
},
right: {
kind: 'variable',
name: 'y',
}
}
},
body: {
kind: 'apply',
func: {
kind: 'variable',
name: 'add'
},
args: [
{
kind: 'literal',
value: { kind: 'int', value: 2 }
},
{
kind: 'literal',
value: { kind: 'int', value: 3 }
},
]
}
};
const str = `
# This is a comment
double = x \\ x * 2
read_line! : Unit \\ String
`;
console.log(tokenize(str));
const env2: Env = new Map();
// const tokens = tokenize("x");
// const p = new Parser(tokens);
// console.log(p.parse());
const res2 = evaluate(ast2, env2);
console.log(res2);
console.log(tokenize("let x = 5"));
/*
const tokens2 = tokenize("let x = (y) => 5 + y in x(3)");
// const tokens2 = tokenize("let x = 5 in x * 4");
// const tokens2 = tokenize("(x, y) => x + y");
const p2 = new Parser(tokens2);
const ast3 = p2.parse();
const env3: Env = new Map();
console.log(ast3);
console.log(evaluate(ast3, env3));
*/