const regex = /^(((&&|<=|>=|<|>|!=|==|&|!)|([-+=]{1,2})|([.!?)}{;,(-]))|(else|if|float|int)|(\d[\d.]))/gm;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('^(((&&|<=|>=|<|>|!=|==|&|!)|([-+=]{1,2})|([.!?)}{;,(-]))|(else|if|float|int)|(\\d[\\d.]))', 'gm')
const str = `int a, b, c;
float d, e;
a = b = 5;
c = 6;
if ( a > b)
{
c = a - b;
e = d - 2.0;
}
else
{
d = e + 6.0;
b = a + c;
}`;
// Reset `lastIndex` if this regex is defined globally
// regex.lastIndex = 0;
let m;
while ((m = regex.exec(str)) !== null) {
// This is necessary to avoid infinite loops with zero-width matches
if (m.index === regex.lastIndex) {
regex.lastIndex++;
}
// The result can be accessed through the `m`-variable.
m.forEach((match, groupIndex) => {
console.log(`Found match, group ${groupIndex}: ${match}`);
});
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for JavaScript, please visit: https://developer.mozilla.org/en/docs/Web/JavaScript/Guide/Regular_Expressions