test(tests/playground/parser): create directory and Makefile for experiment

tests/playground/parser/Makefile

@@ -0,0 +1,40 @@
+LEANC=../../../bin/leanc
+LEAN=../../../bin/lean
+SRCS = $(shell ls *.lean)
+OLEANS = $(SRCS:.lean=.olean)
+CPPS = $(SRCS:.lean=.cpp)
+OBJS = $(SRCS:.lean=.o)
+DEPS = $(SRCS:.lean=.depend)
+CPPFLAGS = -O3
+
+.PHONY: all clean
+
+all: parser $(OLEANS)
+
+depends: $(DEPS)
+
+%.depend: %.lean
+	@echo $(<:.lean=.olean): `$(LEAN) --deps $< | python relative.py` > $@
+
+%.olean: %.lean %.depend
+	$(LEAN) --make --cpp="$*.cpp.tmp" $<
+	mv "$*.cpp.tmp" "$*.cpp"
+	@touch $*.olean
+
+%.cpp: %.olean
+	@
+
+%.o: %.cpp
+	$(LEANC) -c $(CPPFLAGS) -o $@ $<
+
+parser: $(OBJS)
+	$(LEANC) -o parser $(OBJS)
+
+clean:
+	rm -f *.olean
+	rm -f *.cpp
+	rm -f *.o
+	rm -f *.depend
+	rm -f parser
+
+include $(DEPS)

tests/playground/parser/leanpkg.path

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+builtin_path
+path .

tests/playground/parser/relative.py

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+# Copyright (c) 2018 Microsoft Corporation. All rights reserved.
+# Released under Apache 2.0 license as described in the file LICENSE.
+# Authors: Simon Hudon
+
+import sys
+import os
+
+for x in sys.stdin:
+  print(os.path.relpath(x))