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fix infinite loop

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This commit is contained in:
huhu 2019-03-13 17:22:57 +08:00
parent 4f7a85a9f8
commit cbc5f013ca
1 changed files with 10 additions and 11 deletions
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21
the-super-tiny-compiler.js
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@ -420,7 +420,7 @@ function tokenizer(input) {
// Next we're going to check for a closing parenthesis. We do the same exact
// thing as before: Check for a closing parenthesis, add a new token,
// increment `current`, and `continue`.
if (char === ')') {
else if (char === ')') {
tokens.push({
type: 'paren',
value: ')',
@ -436,8 +436,7 @@ function tokenizer(input) {
//
// So here we're just going to test for existence and if it does exist we're
// going to just `continue` on.
let WHITESPACE = /\s/;
if (WHITESPACE.test(char)) {
else if (/\s/.test(char)) {
current++;
continue;
}
@ -451,8 +450,7 @@ function tokenizer(input) {
// Only two separate tokens
//
// So we start this off when we encounter the first number in a sequence.
let NUMBERS = /[0-9]/;
if (NUMBERS.test(char)) {
else if (/[0-9]/.test(char)) {
// We're going to create a `value` string that we are going to push
// characters to.
@ -480,7 +478,7 @@ function tokenizer(input) {
// ^^^ ^^^ string tokens
//
// We'll start by checking for the opening quote:
if (char === '"') {
else if (char === '"') {
// Keep a `value` variable for building up our string token.
let value = '';
@ -511,13 +509,12 @@ function tokenizer(input) {
// ^^^
// Name token
//
let LETTERS = /[a-z]/i;
if (LETTERS.test(char)) {
else if (/[a-z]/i.test(char)) {
let value = '';
// Again we're just going to loop through all the letters pushing them to
// a value.
while (LETTERS.test(char)) {
while (char && /[a-z]/i.test(char)) {
value += char;
char = input[++current];
}
@ -526,17 +523,19 @@ function tokenizer(input) {
tokens.push({ type: 'name', value });
continue;
} else {
current ++;
}
// Finally if we have not matched a character by now, we're going to throw
// an error and completely exit.
throw new TypeError('I dont know what this character is: ' + char);
// throw new TypeError('I dont know what this character is: ' + char);
}
// Then at the end of our `tokenizer` we simply return the tokens array.
return tokens;
}
/**
* ============================================================================
* ヽ/❀o ل͜ o\ﾉ