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parse more stuff

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This commit is contained in:
nora 2023-07-23 14:39:09 +02:00
parent 4e95bc05a3
commit cc2a9aeca8
5 changed files with 206 additions and 40 deletions
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18
src/lexer.ts
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@ -4,9 +4,15 @@ export type DatalessToken =
| "function"
| "let"
| "in"
| "if"
| "then"
| "else"
| "("
| ")"
| "["
| "]"
| ";"
| ":"
| ","
| "="
| "+"
@ -47,7 +53,10 @@ export type BaseToken = { kind: Token["kind"] };
const SINGLE_PUNCT: string[] = [
"(",
")",
"[",
"]",
";",
":",
",",
"+",
"-",
@ -193,7 +202,14 @@ function isWhitespace(char: string): boolean {
return char === " " || char === "\t" || char === "\n" || char === "\r";
}
const keywords = new Set<string>(["function", "let", "in"]);
const keywords = new Set<string>([
"function",
"let",
"in",
"if",
"then",
"else",
]);
function isKeyword(kw: string): DatalessToken | undefined {
return keywords.has(kw) ? (kw as DatalessToken) : undefined;
}