fetch re2 and cre2

Author: mks-m

Makefile

@@ -41,23 +41,38 @@ compile_basics:
 build: fetch_externals
 	$(PYTHON) $(EXTERNALS)/pypy/rpython/bin/rpython $(COMMON_BUILD_OPTS) $(JIT_OPTS) $(TARGET_OPTS)
 
-fetch_externals: $(EXTERNALS)/pypy externals.fetched
+fetch_externals: $(EXTERNALS)/pypy $(EXTERNALS)/cre2 externals.fetched
 
 externals.fetched:
 	echo https://github.com/pixie-lang/external-deps/releases/download/1.0/`uname -s`-`uname -m`.tar.bz2
 	curl -L https://github.com/pixie-lang/external-deps/releases/download/1.0/`uname -s`-`uname -m`.tar.bz2 > /tmp/externals.tar.bz2
 	tar -jxf /tmp/externals.tar.bz2 --strip-components=2
 	touch externals.fetched
 
-
-$(EXTERNALS)/pypy:
-	mkdir $(EXTERNALS); \
+$(EXTERNALS)/pypy: $(EXTERNALS)
 	cd $(EXTERNALS); \
 	curl https://bitbucket.org/pypy/pypy/get/81254.tar.bz2 >  pypy.tar.bz2; \
 	mkdir pypy; \
 	cd pypy; \
 	tar -jxf ../pypy.tar.bz2 --strip-components=1
 
+$(EXTERNALS)/re2: $(EXTERNALS)
+	cd $(EXTERNALS) && \
+	curl -sL https://github.com/google/re2/archive/2016-02-01.tar.gz > re2.tar.gz && \
+  mkdir re2 && \
+  cd re2 && \
+	tar -jxf ../re2.tar.gz --strip-components=1
+
+$(EXTERNALS)/cre2: $(EXTERNALS)/re2
+	cd $(EXTERNALS) && \
+	curl -sL https://github.com/marcomaggi/cre2/archive/0.1b6.tar.gz > cre2.tar.gz && \
+  mkdir cre2 && \
+  cd cre2 && \
+	tar -jxf ../cre2.tar.gz --strip-components=1
+
+$(EXTERNALS):
+	mkdir $(EXTERNALS)
+
 run:
 	./pixie-vm
 

pixie/regex.pxi

@@ -0,0 +1,25 @@
+(ns pixie.regex
+  (:require [pixie.ffi-infer :as i]))
+
+(i/with-config {:library "re2"
+                :cxx-flags ["-lre2"]
+                :includes ["re2.h"]}
+  (i/defconst M_E)
+  (i/defconst M_LOG2E)
+  (i/defconst M_LOG10E)
+  (i/defconst M_LN2)
+  (i/defconst M_LN10)
+  (i/defconst M_PI)
+  (i/defconst M_PI_2)
+  (i/defconst M_PI_4)
+  (i/defconst M_1_PI)
+  (i/defconst M_2_PI)
+  (i/defconst M_2_SQRTPI)
+  (i/defconst M_SQRT2)
+  (i/defconst M_SQRT1_2)
+
+  (i/defcfn nan)
+  (i/defcfn ceil)
+  (i/defcfn floor)
+  (i/defcfn nearbyint)
+  (i/defcfn rint)