Split CMake project into several files

src/CMakeLists.txt

@@ -5,18 +5,4 @@ include(UseJava)
 
 project(Lox NONE)
 
-add_custom_command(OUTPUT com/craftinginterpreters/lox/Expr.java
+add_subdirectory(com/craftinginterpreters)
-  COMMAND java -jar GenerateAst.jar com/craftinginterpreters/lox
-  DEPENDS GenerateAst)
-
-add_jar(Lox
-  com/craftinginterpreters/lox/Lox.java
-  com/craftinginterpreters/lox/TokenType.java
-  com/craftinginterpreters/lox/Token.java
-  com/craftinginterpreters/lox/Expr.java
-  com/craftinginterpreters/lox/AstPrinter.java
-  ENTRY_POINT com/craftinginterpreters/lox/Lox)
-
-add_jar(GenerateAst
-  com/craftinginterpreters/tool/GenerateAst.java
-  ENTRY_POINT com/craftinginterpreters/tool/GenerateAst)

src/com/craftinginterpreters/CMakeLists.txt

@@ -0,0 +1,2 @@
+add_subdirectory(tool)
+add_subdirectory(lox)

src/com/craftinginterpreters/lox/.gitignore

@@ -0,0 +1 @@
+Expr.java

src/com/craftinginterpreters/lox/CMakeLists.txt

@@ -0,0 +1,16 @@
+get_target_property(GENERATE_AST_JAR GenerateAst JAR_FILE)
+
+set(EXPR_JAVA_FILENAME ${CMAKE_CURRENT_BINARY_DIR}/Expr.java CACHE INTERNAL "")
+
+add_custom_command(OUTPUT ${EXPR_JAVA_FILENAME}
+  COMMAND java -jar ${GENERATE_AST_JAR} ${CMAKE_CURRENT_BINARY_DIR}
+  DEPENDS GenerateAst)
+
+add_jar(Lox
+  Lox.java
+  TokenType.java
+  Token.java
+  Scanner.java
+  ${EXPR_JAVA_FILENAME}
+  AstPrinter.java
+  ENTRY_POINT com/craftinginterpreters/lox/Lox)

src/com/craftinginterpreters/tool/CMakeLists.txt

@@ -0,0 +1,3 @@
+add_jar(GenerateAst
+  GenerateAst.java
+  ENTRY_POINT com/craftinginterpreters/tool/GenerateAst)