feat(while): Added while statement.

src/frontend/parser/statements/parse_while_stmt.c

@@ -0,0 +1,57 @@
+#include <stdlib.h>
+#include <stdbool.h>
+#include <string.h>
+#include "frontend/parser/statements/parse_while_stmt.h"
+#include "frontend/parser/statements/parse_stmt.h"
+#include "frontend/parser/expressions/parse_expr.h"
+#include "frontend/parser/expressions/binary_operations/parse_logical_expr.h"
+#include "frontend/parser/statements/parse_variable_declaration_stmt.h"
+#include "frontend/parser/types/parse_type.h"
+#include "frontend/parser/core.h"
+#include "utils.h"
+
+
+AstNode *parse_while_stmt(Parser *parser) {
+    int line = current_token(parser).line;
+    int column_start = current_token(parser).column_start;
+    int position_start = current_token(parser).position_start;
+
+    consume_token(parser);
+    expect(parser, TOKEN_OPAREN, "Expected \"(\".");
+    AstNode *condition = parse_logical_expr(parser);
+
+    expect(parser, TOKEN_CPAREN, "Expected \")\".");
+    expect(parser, TOKEN_COLON, "Expected \":\".");
+
+    WhileNode *while_data = MALLOC_S(sizeof(WhileNode));
+    while_data->body = NULL;
+    while_data->body_count = 0;
+
+    if (not_eof(parser) && current_token(parser).type != TOKEN_END) {
+        while_data->body = REALLOC_S(
+            while_data->body,
+            sizeof(AstNode *) * (while_data->body_count + 1)
+        );
+
+        while_data->body[while_data->body_count++] = parse_stmt(parser);
+    }
+
+    expect(parser, TOKEN_END, "Expected \"end\" to close while statement.");
+
+    int column_end = current_token(parser).column_end - 1;
+    int position_end = current_token(parser).position_end - 1;
+
+    expect(parser, TOKEN_SEMICOLON, "Expected \";\".");
+
+    AstNode *while_node = create_ast_node(
+        NODE_WHILE,
+        while_data,
+        line,
+        column_start,
+        position_start,
+        column_end,
+        position_end
+    );
+
+    return while_node;
+}