From 05bf718e37efdc5201ad281e85da7850af31bd59 Mon Sep 17 00:00:00 2001
From: hachem <im@hachem.wtf>
Date: Sat, 19 Sep 2026 10:49:33 +0200
Subject: feat: basic lexer with flex

---
 Makefile | 37 +++++++++++++------------------------
 1 file changed, 13 insertions(+), 24 deletions(-)

(limited to 'Makefile')

diff --git a/Makefile b/Makefile
index 8d873b9..e1140cf 100644
--- a/Makefile
+++ b/Makefile
@@ -1,8 +1,8 @@
 CC      = cc
-YACC    = bison
-CFLAGS  = -std=c99 -Wall -Wextra -Werror -Wpedantic -O2 -Ibin
-SOURCES = ast.c ast.h eval.c eval.h lexer.c lexer.h main.c
-OBJECTS = bin/parser.o bin/lexer.o bin/ast.o bin/eval.o bin/main.o
+LEX     = flex
+CFLAGS  = -std=c17 -Wall -Wextra -Werror -Wpedantic -O2
+SOURCES = lexer.h main.c
+OBJECTS = bin/lexer.o bin/main.o
 SANITIZE = -g -O0 -fsanitize=address,undefined
 
 .PHONY: all debug check format lint clean
@@ -15,42 +15,31 @@ bin:
 sfinae: $(OBJECTS)
 	$(CC) $(CFLAGS) -o $@ $(OBJECTS)
 
-bin/parser.c bin/parser.h: sfinae.y | bin
-	$(YACC) -d -o bin/parser.c sfinae.y
+bin/lexer.c: sfinae.l | bin
+	$(LEX) -o bin/lexer.c sfinae.l
 
-bin/parser.o: bin/parser.c
-	$(CC) -std=c99 -w -I. -c -o $@ bin/parser.c
+bin/lexer.o: bin/lexer.c lexer.h
+	$(CC) -std=c17 -w -I. -c -o $@ bin/lexer.c
 
 bin/%.o: %.c | bin
 	$(CC) $(CFLAGS) -c -o $@ $<
 
-bin/lexer.o: bin/parser.h ast.h lexer.h
-bin/main.o: ast.h eval.h lexer.h
-bin/ast.o: ast.h lexer.h
-bin/eval.o: eval.h ast.h
+bin/main.o: lexer.h
 
 debug: CFLAGS += $(SANITIZE)
 debug: clean sfinae
 
 check: sfinae
 	@for example in examples/*.sfinae; do \
-		expected="$${example%.sfinae}.expected"; \
-		if ./sfinae "$$example" | diff -u "$$expected" - >/dev/null; then \
-			echo "ok   $$example"; \
-		else \
-			echo "FAIL $$example"; ./sfinae "$$example" | diff -u "$$expected" -; exit 1; \
-		fi; \
+		echo "== $$example"; \
+		./sfinae "$$example" || exit 1; \
 	done
 
 format:
 	clang-format -i $(SOURCES)
 
-LINT_FILTER = '[{"name":"parser.h","lines":[[1,1]]}, \
-    {"name":"ast.c"},{"name":"eval.c"},{"name":"lexer.c"},{"name":"main.c"}, \
-    {"name":"ast.h"},{"name":"eval.h"},{"name":"lexer.h"}]'
-
-lint: bin/parser.h
-	clang-tidy --line-filter=$(LINT_FILTER) ast.c eval.c lexer.c main.c -- -std=c99 -Ibin
+lint:
+	clang-tidy main.c -- -std=c17
 
 clean:
 	rm -rf bin sfinae
-- 
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