chore: remove trailing whitespace and fix indentation across multiple files

Makefile

@@ -5,7 +5,7 @@ LDFLAGS = -ldl -lm
 LEXER_SOURCES = lexer/lexer_tokenizer.c lexer/lexer_keywords.c lexer/lexer_literals.c
 LEXER_OBJECTS = $(LEXER_SOURCES:.c=.o)
 
-PARSER_SOURCES = parser/parser.c parser/parser_expressions.c parser/parser_statements.c parser/parser_declarations.c parser/parser_printer.c
+PARSER_SOURCES = parser/parser.c parser/parser_expressions.c parser/parser_statements.c parser/parser_declarations.c
 PARSER_OBJECTS = $(PARSER_SOURCES:.c=.o)
 
 TYPES_SOURCES = types/types.c
@@ -391,7 +391,125 @@ clean:
 	      test_lexer test_parser test_semantic test_ir test_runtime test_strings test_arrays test_objects test_instance_methods test_fileio test_dowhile test_switch test_math test_string_methods test_static test_interfaces test_exceptions test_ternary test_bitwise test_enhanced_for test_array_init test_instanceof test_shortcircuit test_multidim_arrays test_static_init test_negative test_enums test_collections test_super test_inheritance test_break test_elseif test_forloop test_println test_loader test_object_methods test_autobox test_sockets test_method_ref test_gc test_benchmark \
 	      test_nanbox test_fastframe test_labeltable test_methodcache test_benchmark_pgo test_unittest_demo rava rava.o *.gcda */*.gcda
 
-.PHONY: all clean benchmark test_phase0 pgo test_benchmark_pgo_gen pgo_run test_benchmark_pgo test test_repl examples
+.PHONY: all clean benchmark test_phase0 pgo test_benchmark_pgo_gen pgo_run test_benchmark_pgo test test_repl examples coverage coverage-clean coverage-report
+
+COVERAGE_CFLAGS = -Wall -Wextra -Werror -std=gnu99 -O0 -g --coverage -I.
+COVERAGE_LDFLAGS = -ldl -lm --coverage
+
+coverage-clean:
+	rm -f *.gcda *.gcno *.gcov
+	rm -f */*.gcda */*.gcno */*.gcov
+	rm -f */*/*.gcda */*/*.gcno */*/*.gcov
+	rm -rf coverage_report
+
+coverage: coverage-clean
+	@echo "=== Building with coverage instrumentation ==="
+	$(MAKE) clean
+	$(MAKE) CC="$(CC)" CFLAGS="$(COVERAGE_CFLAGS)" LDFLAGS="$(COVERAGE_LDFLAGS)" all
+	$(MAKE) CC="$(CC)" CFLAGS="$(COVERAGE_CFLAGS)" LDFLAGS="$(COVERAGE_LDFLAGS)" test_overloading test_overloading_runtime
+	@echo ""
+	@echo "=== Running ALL tests to collect coverage data ==="
+	-./test_lexer
+	-./test_parser
+	-./test_semantic
+	-./test_ir
+	-./test_runtime
+	-./test_strings
+	-./test_arrays
+	-./test_objects
+	-./test_instance_methods
+	-./test_fileio
+	-./test_dowhile
+	-./test_switch
+	-./test_math
+	-./test_string_methods
+	-./test_static
+	-./test_static_init
+	-./test_interfaces
+	-./test_exceptions
+	-./test_ternary
+	-./test_bitwise
+	-./test_enhanced_for
+	-./test_array_init
+	-./test_instanceof
+	-./test_shortcircuit
+	-./test_multidim_arrays
+	-./test_negative
+	-./test_enums
+	-./test_collections
+	-./test_super
+	-./test_inheritance
+	-./test_break
+	-./test_elseif
+	-./test_forloop
+	-./test_println
+	-./test_loader
+	-./test_object_methods
+	-./test_autobox
+	-./test_sockets
+	-./test_method_ref
+	-./test_gc
+	-./test_nanbox
+	-./test_fastframe
+	-./test_labeltable
+	-./test_methodcache
+	-./test_benchmark
+	-./test_overloading
+	-./test_overloading_runtime
+	@echo ""
+	@echo "=== Running ALL example programs ==="
+	-./rava examples/01_Fibonacci.java Fibonacci main
+	-./rava examples/02_PrimeNumbers.java PrimeNumbers main
+	-./rava examples/03_FactorialVariations.java FactorialVariations main
+	-./rava examples/04_GCD_LCM.java GCD_LCM main
+	-./rava examples/05_PowerFunction.java PowerFunction main
+	-./rava examples/06_ArrayOperations.java ArrayOperations main
+	-./rava examples/06_BubbleSort.java BubbleSort main
+	-./rava examples/07_CollatzConjecture.java CollatzConjecture main
+	-./rava examples/08_PascalTriangle.java PascalTriangle main
+	-./rava examples/09_TowerOfHanoi.java TowerOfHanoi main
+	-./rava examples/10_AckermannFunction.java AckermannFunction main
+	-./rava examples/11_ArrayOperations.java ArrayOperations main
+	-./rava examples/11_SimpleArray.java SimpleArray main
+	-./rava examples/11_TowerOfHanoiStatic.java TowerOfHanoiStatic main
+	-./rava examples/12_StringBasics.java StringBasics main
+	-./rava examples/13_SimpleObject.java SimpleObject main
+	-./rava examples/14_InstanceMethods.java InstanceMethods main
+	-./rava examples/15_FileIO.java FileIO main
+	-./rava examples/16_ForLoop.java ForLoop main
+	-./rava examples/17_Inheritance.java Inheritance main
+	-./rava examples/18_ElseIf.java ElseIf main
+	-./rava examples/19_BreakContinue.java BreakContinue main
+	-./rava examples/20_Benchmark.java Benchmark main
+	-./rava examples/21_DoWhile.java DoWhile main
+	-./rava examples/HelloWorld.java HelloWorld main
+	@echo ""
+	@echo "=== Generating coverage report ==="
+	$(MAKE) coverage-report
+
+coverage-report:
+	@echo "=== Coverage Summary ==="
+	@echo ""
+	@for dir in lexer parser types semantic ir runtime loader; do \
+		echo "--- $$dir/ ---"; \
+		for f in $$dir/*.c; do \
+			gcov -n "$$f" 2>/dev/null | grep -A1 "^File" | grep -v "^--$$" || true; \
+		done; \
+		echo ""; \
+	done
+	@echo "=== Detailed .gcov files generated in source directories ==="
+	@echo "Run 'gcov <file.c>' for detailed line-by-line coverage"
+	@echo "Run 'make coverage-html' for HTML report (requires lcov)"
+
+coverage-html:
+	@echo "=== Generating HTML coverage report ==="
+	@which lcov > /dev/null || (echo "ERROR: lcov not installed. Run: sudo apt-get install lcov" && exit 1)
+	lcov --capture --directory . --output-file coverage.info --ignore-errors inconsistent,unused
+	lcov --remove coverage.info '/usr/*' '*/tests/*' --output-file coverage.info --ignore-errors inconsistent,unused
+	genhtml coverage.info --output-directory coverage_report --ignore-errors inconsistent,unused
+	@echo ""
+	@echo "=== HTML report generated in coverage_report/ ==="
+	@xdg-open coverage_report/index.html 2>/dev/null || open coverage_report/index.html 2>/dev/null || echo "Open coverage_report/index.html in a browser"
 
 test: all
 	@echo "=== Running All Tests ==="