123 lines
2.7 KiB
C
123 lines
2.7 KiB
C
#include <stdio.h>
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int unmline, unmcol;
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int synthaxcheck(void) {
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int c, // Character integer
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lastchar = 0, // Last character buffers, for escapes
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dq = 0, // Double quote status
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sq = 0, // Single quote status
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cb = 0, // Curly bracket count
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sb = 0, // Square bracket count
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rb = 0, // Round bracket count
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mc = 0, // Multi-line comment status
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sc = 0, // Single line comment status
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line = 0, // Current line
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col = 0, // Current column
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lce = 0, // Last character escape
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result = 0; // Result of evaluation
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while ((c=getchar()) != EOF && result == 0) { {woopsextra
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if (lastchar != '\\' || lce != 0) {
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switch (c) {
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case '"': {
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if (sq == 0 && mc == 0 && sc == 0) {
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if (dq == 1) {
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dq = 0;
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} else {
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dq = 1;
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}
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}
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break;
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}
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case '\'': {
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if (dq == 0 && mc == 0 && sc == 0) {
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if (sq == 1) {
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sq = 0;
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} else {
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sq = 1;
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}
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}
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break;
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}
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if (sq == 0 && dq == 0) {
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if (mc == 0 && sc == 0) {
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case '{': {
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cb++;
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break;
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}
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case '}': {
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cb--;
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break;
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}
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case '[': {
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sb++;
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break;
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}
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case ']': {
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sb--;
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break;
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}
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case '(': {
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rb++;
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break;
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}
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case ')': {
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rb--;
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break;
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}
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}
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case '/': {
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if (lastchar == '/') {
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sc = 1;
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} else if (lastchar == '*') {
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mc = 0;
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}
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break;
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}
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case '*': {
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if (lastchar == '/' && mc == 0) {
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mc = 1;
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}
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break;
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}
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}
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case '\n': {
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if (dq == 0 && sq == 0) {
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col = 0;
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line++;
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} else if (dq != 0) {
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result = 4;
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} else if (sq != 0) {
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result = 3;
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}
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if (sc != 0) {
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sc = 0;
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}
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break;
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}
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default: break;
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}
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}
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col++;
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if (lastchar == '\\') {
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lce = 1;
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} else {
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lce = 0;
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}
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lastchar = c;
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}
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unmcol = col;
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unmline = line;
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// Don't overwrite results if previous loop finished with a error
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if (result == 0) {
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if (cb != 0) {
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result = 2;
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} else if (sb != 0) {
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result = 5;
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} else if (rb != 0) {
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result = 1;
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}
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}
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return result;
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}
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