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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 | 41x 76x 76x 1x 75x 41x 13x 13x 13x 13x 7x 13x 41x 41x 41x 41x 41x 41x | /**
* Converts a string into a valid C symbol
* @param inputSymbol Preferred name for symbol
* @returns valid C symbol
*/
export const toValidSymbol = (inputSymbol: string) => {
const symbol = String(inputSymbol || "symbol")
.toLowerCase()
// Strip anything but alphanumeric
.replace(/[^a-z0-9_]/g, "_")
// Squash repeating underscores
.replace(/[_]+/g, "_")
// Limit to 27 chars to leave room for _NNN postfix while keeping within C's 31 unique char limit
.substring(0, 27);
if (symbol.match(/^\d/)) {
// Starts with a number
return `_${symbol}`;
}
return symbol;
};
/**
* Generates the next unique symbol given a preferred name and an array of existing symbols.
* When symbol already exists will append an incrementing numeric value
* @param inputSymbol Preferred name for symbol
* @param existingSymbols Array of existing symbols
* @returns unique C symbol
*/
export const genSymbol = (
inputSymbol: string,
existingSymbols: Set<string>
) => {
const initialSymbol = toValidSymbol(inputSymbol);
let symbol = initialSymbol;
let count = 0;
while (existingSymbols.has(symbol)) {
symbol = `${initialSymbol.replace(/_[0-9]+/, "")}_${count++}`;
}
return symbol;
};
export const tilesetSymbol = (symbol: string) => `${symbol}_tileset`;
export const tilemapSymbol = (symbol: string) => `${symbol}_tilemap`;
export const tilemapAttrSymbol = (symbol: string) => `${symbol}_tilemap_attr`;
export const initScriptSymbol = (symbol: string) => `${symbol}_init`;
export const interactScriptSymbol = (symbol: string) => `${symbol}_interact`;
export const updateScriptSymbol = (symbol: string) => `${symbol}_update`;
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