Press n or j to go to the next uncovered block, b, p or k for the previous block.
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import d from 'debug';
const debug = d('ssvg:parser');
/**
* @param {ParseCtx} ctx
* @return {string|null}
*/
export function skipSpaces(ctx) {
for (var i = ctx.index; i < ctx.value.length; ++i) {
const c = ctx.value[i];
if (c !== ' ' && c !== '\t' && c !== '\n') {
ctx.index = i;
return c;
}
}
ctx.index = ctx.value.length;
return null;
}
/**
* @param {string} message
* @param {ParseCtx} ctx
* @return {string}
*/
export function makeError(message, ctx) {
var out = message + '\n' + ctx.value + '\n' + '-'.repeat(ctx.index) + '^\n';
debug('SyntaxError: ' + out);
return out;
}
/**
* @template T
* @param {ParseCtx} ctx
* @param {(ctx: ParseCtx) => T} func
* @return {T[]}
*/
export function parseList(ctx, func) {
/** @type {T[]} */
var values = [];
while (ctx.index < ctx.value.length) {
values.push(func(ctx));
var c = skipSpaces(ctx);
if (c !== null) {
if (c !== ';') {
throw new SyntaxError(makeError(`invalid list separator '${c}'`, ctx));
}
++ctx.index;
}
}
return values;
}
/**
* @param {string} str
* @param {string[]} args
* @param {Window} win
* @return {Function}
* @details win may differ from global window when using iframes
*/
export function parseDomCallback(str, args, win = window) {
// @ts-ignore
if (win.hasOwnProperty(str) && typeof win[str] === 'function') {
// @ts-ignore
return win[str];
}
/* eslint-disable-next-line no-new-func */ // @ts-ignore
var fun = new win.Function(...args, "return " + str);
/** @type {boolean} */
var direct;
return function(/** @type {any[]} */ ...args) {
if (direct === true) {
// @ts-ignore
return fun.call(this, ...args);
}
else if (direct === false) {
// @ts-ignore
return fun.call(this, ...args).call(this, ...args);
}
else { // first function call, let's check result
// @ts-ignore
const ret = fun.call(this, ...args);
direct = ((typeof ret) !== 'function');
return (direct === false) ? // @ts-ignore
(ret.call(this, ...args)) : ret;
}
};
}
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