From 73e6d290b8c686ccc5a1bcbe24a72d33dffd1704 Mon Sep 17 00:00:00 2001
From: Alessandro Iezzi <aiezzi@alessandroiezzi.it>
Date: Thu, 14 Dec 2023 12:16:12 +0100
Subject: Separate compilation of src/main and src/test

No need to build mk.
---
 java.mvn.mk | 48 ++++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 40 insertions(+), 8 deletions(-)

diff --git a/java.mvn.mk b/java.mvn.mk
index 864f6de..360c953 100644
--- a/java.mvn.mk
+++ b/java.mvn.mk
@@ -1,3 +1,5 @@
+.SUFFIXES: .java .class
+
 ARTIFACT_ID  != xmllint --xpath "/*[local-name()='project']/*[local-name()='artifactId']/text()" pom.xml
 VERSION      != xmllint --xpath "/*[local-name()='project']/*[local-name()='version']/text()"    pom.xml
 JAVA_VERSION != xmllint --xpath "/*[local-name()='project']/*[local-name()='properties']/*[local-name()='java.version']/text()"    pom.xml
@@ -6,17 +8,31 @@ JC           = JAVA_VERSION=${JAVA_VERSION} javac
 MVN          = mvn
 JAVA         = JAVA_VERSION=${JAVA_VERSION} java -classpath `cat .classpath`
 JDB          = jdb
+
+# Directories
 BUILD_DIR    = target
+CLASSES_DIR      = ${BUILD_DIR}/classes
+TEST_CLASSES_DIR = ${BUILD_DIR}/test-classes
+SRC_PATH         = src
+MAIN_SRC_PATH    = ${SRC_PATH}/main/java
+TEST_SRC_PATH    = ${SRC_PATH}/test/java
+
 JAR          = ${BUILD_DIR}/${ARTIFACT_ID}-${VERSION}.jar
 MVN_FLAGS    =
 DBG_PORT     = 1044
-SRC_PATH     = src/main/java
-SRC         != find src -name '*.java'
-OBJ         != find src -name '*.java' | sed -E 's/^src\/main\/java/target\/classes/g' | sed -E 's/^src\/test\/java/target\/test-classes/g' | sed -E 's/\.java$$/\.class/g'
+
+MAIN_SRC    != find ${MAIN_SRC_PATH} -name '*.java'
+TEST_SRC    != find ${TEST_SRC_PATH} -name '*.java'
+
+MAIN_OBJ    != echo ${MAIN_SRC} | sed -E 's|${MAIN_SRC_PATH}|${CLASSES_DIR}|g' \
+	| sed 's|\.java|\.class|g'
+TEST_OBJ    != echo ${TEST_SRC} | sed -E 's|${TEST_SRC_PATH}|${TEST_CLASSES_DIR}|g' \
+	| sed 's|\.java|\.class|g'
+
 DBG_PORT     = 1044
 DBG_FLAGS    = -agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=${DBG_PORT}
 
-all: .classpath ${OBJ}
+all: .classpath ${MAIN_OBJ} ${TEST_OBJ}
 
 run: .classpath .main-class
 	${JAVA} `cat .main-class` ${ARGS}
@@ -25,23 +41,24 @@ debug: .classpath .main-class
 	${JAVA} ${DBG_FLAGS} `cat .main-class` ${ARGS}
 
 debugger:
-	${JDB} -sourcepath ${SRC_PATH} -attach ${DBG_PORT}
+	${JDB} -sourcepath ${MAIN_SRC_PATH} -attach ${DBG_PORT}
 
 .main-class:
-	@echo ${SRC} | tr ' ' '\n' | fzf | sed -E 's/.*java\/(.*)\.java/\1/g' | tr '/' '.' > $@
+	@echo ${MAIN_SRC} | tr ' ' '\n' | fzf | sed -E 's/.*java\/(.*)\.java/\1/g' | tr '/' '.' > $@
 
 .classpath: pom.xml
 	${MVN} ${MVN_FLAGS} dependency:build-classpath -Dmdep.outputFile=$@
 	@echo -n ':'target/classes >> $@
 
-.classes: ${SRC}
+.classes: ${MAIN_SRC}
 	for jar in `cat .classpath | tr ':' '\n' | grep -E '\.jar$$'`; do \
 		jar tvf $$jar | awk '{ print $$8 }'; \
 	done | grep -E '\.class$$' | grep -v package-info.class | sed -E 's/\$$[0-9]*//g' | sort | uniq > $@
-	@echo ${SRC} | tr ' ' '\n' >> $@
+	@echo ${MAIN_SRC} | tr ' ' '\n' >> $@
 
 clean:
 	@rm -rf ${BUILD_DIR}
+	@find ${SRC_PATH} -name '*.class' -exec rm -f {} \;
 
 buildmk:
 	@for i in `find src -name *.java`; do \
@@ -57,3 +74,18 @@ buildmk:
 
 .tags:
 	exctags -Rnf $@
+
+.java.class:
+	${JC} -classpath `cat .classpath` $<
+
+${MAIN_OBJ}: ${MAIN_SRC} ${TEST_SRC}
+	@mkdir -p ${CLASSES_DIR}
+	@make `echo $@ | sed -E 's|${CLASSES_DIR}|${MAIN_SRC_PATH}|g'`
+	@mkdir -p `dirname $@`
+	@cp `echo $@ | sed -E 's|${CLASSES_DIR}|${MAIN_SRC_PATH}|g'` $@
+
+${TEST_OBJ}: ${MAIN_SRC} ${TEST_SRC}
+	@mkdir -p ${CLASSES_DIR}
+	@make `echo $@ | sed -E 's|${TEST_CLASSES_DIR}|${TEST_SRC_PATH}|g'`
+	@mkdir -p `dirname $@`
+	@cp `echo $@ | sed -E 's|${TEST_CLASSES_DIR}|${TEST_SRC_PATH}|g'` $@
-- 
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