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8142447: JShell tool: Command change: re-run n-th command should be re-run by id

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Reviewed-by: rfield
This commit is contained in:
Shinya Yoshida 2015-12-01 10:27:14 -08:00 • committed by Robert Field
parent 0379d3dc4f
commit 37762cea6b
2 changed files with 67 additions and 16 deletions
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34
langtools/src/jdk.jshell/share/classes/jdk/internal/jshell/tool/JShellTool.java
View file

@ -86,7 +86,9 @@ import jdk.jshell.JShell.Subscription;
import static java.nio.file.StandardOpenOption.CREATE;
import static java.nio.file.StandardOpenOption.TRUNCATE_EXISTING;
import static java.nio.file.StandardOpenOption.WRITE;
import java.util.Locale;
import java.util.MissingResourceException;
import java.util.Optional;
import java.util.ResourceBundle;
import static java.util.stream.Collectors.toList;
@ -491,13 +493,15 @@ public class JShellTool {
}
private void processCommand(String cmd) {
if (cmd.startsWith("/-")) {
try {
//handle "/[number]"
//handle "/-[number]"
cmdUseHistoryEntry(Integer.parseInt(cmd.substring(1)));
return ;
} catch (NumberFormatException ex) {
//ignore
}
}
String arg = "";
int idx = cmd.indexOf(' ');
if (idx > 0) {
@ -506,8 +510,10 @@ public class JShellTool {
}
Command[] candidates = findCommand(cmd, c -> c.kind != CommandKind.HELP_ONLY);
if (candidates.length == 0) {
hard("No such command: %s", cmd);
if (!rerunHistoryEntryById(cmd.substring(1))) {
hard("No such command or snippet id: %s", cmd);
fluff("Type /help for help.");
}
} else if (candidates.length == 1) {
candidates[0].run.accept(arg);
} else {
@ -728,7 +734,7 @@ public class JShellTool {
registerCommand(new Command("/!", "", "re-run last snippet",
arg -> cmdUseHistoryEntry(-1),
EMPTY_COMPLETION_PROVIDER));
registerCommand(new Command("/<n>", "", "re-run n-th snippet",
registerCommand(new Command("/<id>", "", "re-run snippet by id",
arg -> { throw new IllegalStateException(); },
EMPTY_COMPLETION_PROVIDER,
CommandKind.HELP_ONLY));
@ -1275,15 +1281,29 @@ public class JShellTool {
else
index--;
if (index >= 0 && index < keys.size()) {
String source = keys.get(index).source();
cmdout.printf("%s\n", source);
input.replaceLastHistoryEntry(source);
processSourceCatchingReset(source);
rerunSnippet(keys.get(index));
} else {
hard("Cannot find snippet %d", index + 1);
}
}
private boolean rerunHistoryEntryById(String id) {
Optional<Snippet> snippet = state.snippets().stream()
.filter(s -> s.id().equals(id))
.findFirst();
return snippet.map(s -> {
rerunSnippet(s);
return true;
}).orElse(false);
}
private void rerunSnippet(Snippet snippet) {
String source = snippet.source();
cmdout.printf("%s\n", source);
input.replaceLastHistoryEntry(source);
processSourceCatchingReset(source);
}
/**
* Filter diagnostics for only errors (no warnings, ...)
* @param diagnostics input list

37
langtools/test/jdk/jshell/ToolBasicTest.java
View file

@ -41,7 +41,9 @@ import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Scanner;
import java.util.function.BiFunction;
import java.util.function.Consumer;
import java.util.function.Function;
import java.util.prefs.BackingStoreException;
import java.util.prefs.Preferences;
import java.util.stream.Collectors;
@ -215,8 +217,8 @@ public class ToolBasicTest extends ReplToolTesting {
@Test(enabled = false) // TODO 8130450
public void testRerun() {
test(false, new String[] {"-nostartup"},
(a) -> assertCommand(a, "/0", "| Cannot find snippet 0\n"),
(a) -> assertCommand(a, "/5", "| Cannot find snippet 5\n")
(a) -> assertCommand(a, "/0", "| No such command or snippet id: /0\n| Type /help for help.\n"),
(a) -> assertCommand(a, "/5", "| No such command or snippet id: /5\n| Type /help for help.\n")
);
String[] codes = new String[] {
"int a = 0;", // var
@ -252,6 +254,35 @@ public class ToolBasicTest extends ReplToolTesting {
tests.toArray(new ReplTest[tests.size()]));
}
public void test8142447() {
Function<String, BiFunction<String, Integer, ReplTest>> assertRerun = cmd -> (code, assertionCount) ->
(a) -> assertCommandCheckOutput(a, cmd, s -> {
String[] ss = s.split("\n");
assertEquals(ss[0], code);
loadVariable(a, "int", "assertionCount", Integer.toString(assertionCount), Integer.toString(assertionCount));
});
ReplTest assertVariables = (a) -> assertCommandCheckOutput(a, "/v", assertVariables());
Compiler compiler = new Compiler();
Path startup = compiler.getPath("StartupFileOption/startup.txt");
compiler.writeToFile(startup, "int assertionCount = 0;\n" + // id: s1
"void add(int n) { assertionCount += n; }");
test(new String[]{"-startup", startup.toString()},
(a) -> assertCommand(a, "add(1)", ""), // id: 1
(a) -> assertCommandCheckOutput(a, "add(ONE)", s -> assertEquals(s.split("\n")[0], "| Error:")), // id: e1
(a) -> assertVariable(a, "int", "ONE", "1", "1"),
assertRerun.apply("/1").apply("add(1)", 2), assertVariables,
assertRerun.apply("/e1").apply("add(ONE)", 3), assertVariables,
assertRerun.apply("/s1").apply("int assertionCount = 0;", 0), assertVariables
);
test(false, new String[] {"-nostartup"},
(a) -> assertCommand(a, "/s1", "| No such command or snippet id: /s1\n| Type /help for help.\n"),
(a) -> assertCommand(a, "/1", "| No such command or snippet id: /1\n| Type /help for help.\n"),
(a) -> assertCommand(a, "/e1", "| No such command or snippet id: /e1\n| Type /help for help.\n")
);
}
public void testRemaining() {
test(
(a) -> assertCommand(a, "int z; z =", "| Added variable z of type int\n"),
@ -574,7 +605,7 @@ public class ToolBasicTest extends ReplToolTesting {
public void testUnknownCommand() {
test((a) -> assertCommand(a, "/unknown",
"| No such command: /unknown\n" +
"| No such command or snippet id: /unknown\n" +
"| Type /help for help.\n"));
}