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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 | 44x 44x 44x 200x 44x 42x 1x 41x 1x 40x 44x 104x 44x 158x 44x 51x 44x 44x 26x 26x 18x 5x 4x 9x 8x 44x 23x 6x 17x 44x 16x | import { assertUnreachable } from "shared/lib/helpers/assert";
import {
Associativity,
FunctionSymbol,
functionSymbols,
OperatorSymbol,
operatorSymbols,
functionArgsLen,
Token,
} from "./types";
export const isNumeric = (str: string) => {
return (
str.toLowerCase() === "true" ||
str.toLowerCase() === "false" ||
(!isNaN(Number(str)) && isFinite(Number(str)))
);
};
export const toNumber = (str: string) => {
if (str.toLowerCase() === "true") {
return 1;
}
if (str.toLowerCase() === "false") {
return 0;
}
return Number(str);
};
export const isOperatorSymbol = (x: string): x is OperatorSymbol => {
return (operatorSymbols as unknown as string[]).indexOf(x) > -1;
};
export const isFunctionSymbol = (x: string): x is FunctionSymbol => {
return (functionSymbols as unknown as string[]).indexOf(x) > -1;
};
export const isVariable = (token: string): boolean => {
return !!/^[$A-Z_][0-9A-Z_$]*$/i.exec(token);
};
export const isConstant = (token: string): boolean => {
return !!/^@[a-z0-9-]{36}@$/i.exec(token);
};
export const getPrecedence = (token: Token): number => {
Iif (token.type === "FUN") {
return 4;
}
if (token.type === "OP") {
switch (token.operator) {
case "~":
case "!":
return 14;
case "*":
case "/":
case "%":
return 12;
case "+":
case "-":
return 11;
case "<<":
case ">>":
return 10;
case "<":
case ">":
case ">=":
case "<=":
return 9;
case "==":
case "!=":
return 8;
case "&":
return 7;
case "^":
return 6;
case "|":
return 5;
case "&&":
return 4;
case "||":
return 3;
}
/* istanbul ignore next */
assertUnreachable(token.operator);
}
return -1;
};
export const getAssociativity = (token: Token): Associativity => {
if (
token.type === "OP" &&
(token.operator === "!" || token.operator === "~")
) {
return Associativity.Right;
}
return Associativity.Left;
};
export const getArgsLen = (symbol: FunctionSymbol) => {
return functionArgsLen[symbol];
};
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