summaryrefslogtreecommitdiff
path: root/src/main/java/bjc/dicelang/scl/StreamControlConsole.java
diff options
context:
space:
mode:
Diffstat (limited to 'src/main/java/bjc/dicelang/scl/StreamControlConsole.java')
-rw-r--r--src/main/java/bjc/dicelang/scl/StreamControlConsole.java73
1 files changed, 73 insertions, 0 deletions
diff --git a/src/main/java/bjc/dicelang/scl/StreamControlConsole.java b/src/main/java/bjc/dicelang/scl/StreamControlConsole.java
new file mode 100644
index 0000000..78c8c5e
--- /dev/null
+++ b/src/main/java/bjc/dicelang/scl/StreamControlConsole.java
@@ -0,0 +1,73 @@
+package bjc.dicelang.scl;
+
+import bjc.utils.funcdata.FunctionalList;
+import bjc.utils.funcdata.IList;
+
+import java.util.Scanner;
+
+/**
+ * Implement a SCL REPL
+ *
+ * @author Ben Culkin
+ */
+public class StreamControlConsole {
+ /*
+ * @TODO 10/08/17 :SCLArgs
+ *
+ * Do something useful with the CLI args.
+ *
+ */
+ /**
+ * Main method
+ *
+ * @param args
+ * Unused CLI args.
+ */
+ public static void main(String[] args) {
+ /*
+ * Initialize vars.
+ *
+ */
+ StreamEngine sengine = new StreamEngine();
+ StreamControlEngine sclengine = new StreamControlEngine(sengine);
+ Scanner scn = new Scanner(System.in);
+
+ /* Get input from the user. */
+ System.out.print("Enter a SCL command string (blank to exit): ");
+
+ /* Process it. */
+ while(scn.hasNextLine()) {
+ String ln = scn.nextLine().trim();
+
+ if(ln.equals("")) {
+ /* Ignore empty lines. */
+ break;
+ }
+
+ /* Break the token into strings. */
+ IList<String> res = new FunctionalList<>();
+ String[] tokens = ln.split(" ");
+
+ /* Run the stream engine on the tokens. */
+ boolean succ = sengine.doStreams(tokens, res);
+ if(!succ) {
+ System.out.printf("ERROR: Stream engine failed for line '%s'\n", ln);
+ continue;
+ }
+
+ /* Run the command through SCL. */
+ tokens = res.toArray(new String[res.getSize()]);
+ succ = sclengine.runProgram(tokens);
+ if(!succ) {
+ System.out.printf("ERROR: SCL engine failed for line '%s'\n", ln);
+ continue;
+ }
+
+ /* Prompt again. */
+ System.out.print("Command string executed succesfully.\n\n");
+ System.out.print("Enter a SCL command string (blank to exit): ");
+ }
+
+ scn.close();
+ }
+}