exercise 3

2023-05-15 14:34:44 +02:00
parent 9cde0cf1df
commit be9e69b459
3 changed files with 96 additions and 0 deletions
@@ -0,0 +1,42 @@
+#include <stdio.h>
+#include "Lexer.h"
+#include "Lexer.c"
+
+int main() {
+    // variables
+    char* sourcecode = "index = 2 * count + 42;";               // input string
+    int lexer_state = _START_;                                  // int var for the state machine
+
+    // checking var values
+    printf(sourcecode);                                         // printing the input string to check it
+
+    // main loop
+    do {
+        switch (lexer_state) {                                  // state machine starts here
+            case _START_:
+                lexer_state = start(sourcecode);
+                break;
+            case _GET_NEXT_CHARACTER_:
+                lexer_state = getNextCharacter(sourcecode);
+                break;
+            case _READ_IDENTIFIER_:
+                lexer_state = readIdentifier(sourcecode);
+                break;
+            case _READ_NUM_LIT_:
+                lexer_state = readNumLit(sourcecode);
+                break;
+            case _READ_OPERATOR_:
+                lexer_state = readOperator(sourcecode);
+                break;
+            case _READ_PUNCTUATION_:
+                lexer_state = readPunctuation(sourcecode);
+                break;
+            default: lexer_state = _ERROR_;
+        }
+    } while (lexer_state != _STOP_);                            // state machine ends here
+
+    // printf("Lexer exited with code ");
+    // printf(lexer_state);
+
+    return 0;
+}