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-rw-r--r--js/src/jit-test/tests/debug/Script-getPossibleBreakpoints.js384
1 files changed, 384 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Script-getPossibleBreakpoints.js b/js/src/jit-test/tests/debug/Script-getPossibleBreakpoints.js
new file mode 100644
index 0000000000..5c52f52de3
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Script-getPossibleBreakpoints.js
@@ -0,0 +1,384 @@
+// simple ExpressionStatement
+assertBreakpoints(`
+ /*S*/a;
+ /*S*/obj.prop;
+`);
+
+// ExpressionStatement with calls
+assertBreakpoints(`
+ /*S*/a();
+ /*S*/obj./*B*/prop();
+`);
+
+// calls with many args
+assertBreakpoints(`
+ /*S*/a/*B*/(1);
+ /*S*/a/*B*/(1,2);
+ /*S*/a/*B*/(1,2,3);
+`);
+
+
+// ExpressionStatement with nested expression calls.
+assertBreakpoints(`
+ "45";
+ /*S*/"45" + /*B*/a();
+ /*S*/b() + "45";
+
+ /*S*/"45" + o./*B*/a();
+ /*S*/o./*B*/b() + "45";
+ /*S*/"45" + o./*B*/a() + o./*B*/b();
+ /*S*/o./*B*/b() + "45" + o./*B*/a();
+ /*S*/o./*B*/b() + o./*B*/a() + "45";
+`);
+
+// var VariableStatement initializers
+assertBreakpoints(`
+ var foo1 = /*S*/"" + o.a + "" + /*B*/b(),
+ foo2 = /*S*/"45",
+ foo3 = /*S*/"45" + /*B*/a(),
+ foo4 = /*S*/b() + "45",
+ foo5 = /*S*/"45" + /*B*/a() + /*B*/b(),
+ foo6 = /*S*/b() + "45" + /*B*/a(),
+ foo7 = /*S*/b() + /*B*/a() + "45",
+ foo8 = /*S*/"45" + o./*B*/a(),
+ foo9 = /*S*/o./*B*/b() + "45",
+ foo10 = /*S*/"45" + o./*B*/a() + o./*B*/b(),
+ foo11 = /*S*/o./*B*/b() + "45" + o./*B*/a(),
+ foo12 = /*S*/o./*B*/b() + o./*B*/a() + "45";
+`);
+
+// let VariableStatement initializers
+assertBreakpoints(`
+ let foo1 = /*S*/"" + o.a + "" + /*B*/b(),
+ foo2 = /*S*/"45",
+ foo3 = /*S*/"45" + /*B*/a(),
+ foo4 = /*S*/b() + "45",
+ foo5 = /*S*/"45" + /*B*/a() + /*B*/b(),
+ foo6 = /*S*/b() + "45" + /*B*/a(),
+ foo7 = /*S*/b() + /*B*/a() + "45",
+ foo8 = /*S*/"45" + o./*B*/a(),
+ foo9 = /*S*/o./*B*/b() + "45",
+ foo10 = /*S*/"45" + o./*B*/a() + o./*B*/b(),
+ foo11 = /*S*/o./*B*/b() + "45" + o./*B*/a(),
+ foo12 = /*S*/o./*B*/b() + o./*B*/a() + "45";
+`);
+
+// const VariableStatement initializers
+assertBreakpoints(`
+ const foo1 = /*S*/"" + o.a + "" + /*B*/b(),
+ foo2 = /*S*/"45",
+ foo3 = /*S*/"45" + /*B*/a(),
+ foo4 = /*S*/b() + "45",
+ foo5 = /*S*/"45" + /*B*/a() + /*B*/b(),
+ foo6 = /*S*/b() + "45" + /*B*/a(),
+ foo7 = /*S*/b() + /*B*/a() + "45",
+ foo8 = /*S*/"45" + o./*B*/a(),
+ foo9 = /*S*/o./*B*/b() + "45",
+ foo10 = /*S*/"45" + o./*B*/a() + o./*B*/b(),
+ foo11 = /*S*/o./*B*/b() + "45" + o./*B*/a(),
+ foo12 = /*S*/o./*B*/b() + o./*B*/a() + "45";
+`);
+
+// EmptyStatement
+assertBreakpoints(`
+ ;
+ ;
+ ;
+ /*S*/a();
+`);
+
+// IfStatement
+assertBreakpoints(`
+ if (/*S*/a) {}
+ if (/*S*/a()) {}
+ if (/*S*/obj.prop) {}
+ if (/*S*/obj./*B*/prop()) {}
+ if (/*S*/"42" + a) {}
+ if (/*S*/"42" + /*B*/a()) {}
+ if (/*S*/"42" + obj.prop) {}
+ if (/*S*/"42" + obj./*B*/prop()) {}
+`);
+
+// DoWhile
+assertBreakpoints(`
+ do {
+ /*S*/fn();
+ } while(/*S*/a)
+ do {
+ /*S*/fn();
+ } while(/*S*/"42" + /*B*/a());
+`);
+
+// While
+assertBreakpoints(`
+ while(/*S*/a) {
+ /*S*/fn();
+ }
+ while(/*S*/"42" + /*B*/a()) {
+ /*S*/fn();
+ }
+`);
+
+// ForExpr
+assertBreakpoints(`
+ for (/*S*/b = 42; /*S*/c; /*S*/d) /*S*/fn();
+ for (var b = /*S*/42; /*S*/c; /*S*/d) /*S*/fn();
+ for (let b = /*S*/42; /*S*/c; /*S*/d) /*S*/fn();
+ for (const b = /*S*/42; /*S*/c; /*S*/d) /*S*/fn();
+ for (b in /*S*/d) /*S*/fn();
+ for (var b in /*S*/d) /*S*/fn();
+ for (let b in /*S*/d) /*S*/fn();
+ for (const b in /*S*/d) /*S*/fn();
+ for (b of /*S*/d) /*S*/fn();
+ for (var b of /*S*/d) /*S*/fn();
+ for (let b of /*S*/d) /*S*/fn();
+ for (const b of /*S*/d) /*S*/fn();
+`);
+
+// SwitchStatement
+assertBreakpoints(`
+ switch (/*S*/d) {
+ case 42:
+ /*S*/fn();
+ }
+`);
+
+// ContinueStatement
+assertBreakpoints(`
+ while (/*S*/a) {
+ /*S*/continue;
+ }
+`);
+
+// BreakStatement
+assertBreakpoints(`
+ while (/*S*/a) {
+ /*S*/break;
+ }
+`);
+
+// ReturnStatement
+assertBreakpoints(`
+ /*S*/return a + /*B*/b();
+`);
+
+// WithStatement
+assertBreakpoints(`
+ with (/*S*/a) {
+ /*S*/fn();
+ }
+`);
+
+// ThrowStatement
+assertBreakpoints(`
+ /*S*/throw /*B*/fn();
+ /*S*/throw "42" + /*B*/fn();
+`);
+
+// DebuggerStatement
+assertBreakpoints(`
+ /*S*/debugger;
+ /*S*/debugger;
+`);
+
+// BlockStatent wrapper
+assertBreakpoints(`
+ {
+ /*S*/a();
+ }
+`);
+
+// ClassDeclaration
+assertBreakpoints(`
+ class Foo2 {}
+ /*S*/class Foo extends ("" + o.a + /*B*/a() + /*B*/b()) { }
+`);
+
+// Misc examples
+assertBreakpoints(`
+ /*S*/void /*B*/a();
+`);
+assertBreakpoints(`
+ /*S*/a() + /*B*/b();
+`);
+assertBreakpoints(`
+ for (
+ var i = /*S*/0;
+ /*S*/i < n; // 4
+ /*S*/++i
+ ) {
+ /*S*/console./*B*/log("omg");
+ }
+`);
+assertBreakpoints(`
+ function * gen(){
+ var foo = (
+ (/*S*/console./*B*/log('before', /*B*/a())),
+ (yield console./*B*/log('mid', /*B*/b())),
+ (console./*B*/log('after', /*B*/a()))
+ );
+ var foo2 = /*S*/a() + /*B*/b();
+ /*S*/console./*B*/log(foo);
+ /*B*/}
+ var i = /*S*/0;
+ for (var foo of /*S*/gen()) {
+ /*S*/console./*B*/log(i++);
+ }
+`);
+assertBreakpoints(`
+ var fn = /*S*/() => {
+ /*S*/console./*B*/log("fn");
+ /*S*/return /*B*/new Proxy({ prop: 42 }, {
+ deleteProperty() {
+ /*S*/console./*B*/log("delete");
+ /*B*/}
+ });
+ /*B*/};
+`);
+assertBreakpoints(`
+ var fn = /*S*/async (arg) => {
+ /*S*/console./*B*/log("fn");
+ /*B*/};
+`);
+assertBreakpoints(`
+ var fn = /*S*/arg => {
+ /*S*/console./*B*/log("fn");
+ /*B*/};
+`);
+assertBreakpoints(`
+ var fn = /*S*/async arg => {
+ /*S*/console./*B*/log("fn");
+ /*B*/};
+`);
+assertBreakpoints(`
+ var fn = /*S*/(arg) => /*S*/console./*B*/log("fn");
+ var fn = /*S*/async (arg) => /*S*/console./*B*/log("fn");
+ var fn = /*S*/arg => /*S*/console./*B*/log("fn");
+ var fn = /*S*/async arg => /*S*/console./*B*/log("fn");
+`);
+assertBreakpoints(`
+ if ((/*S*/delete /*B*/fn().prop) + /*B*/b()) {
+ /*S*/console./*B*/log("foo");
+ }
+`);
+assertBreakpoints(`
+ for (var j = /*S*/0; (/*S*/o.a) < 3; (/*S*/j++, /*B*/a(), /*B*/b())) {
+ /*S*/console./*B*/log(i);
+ }
+`);
+assertBreakpoints(`
+ function fn2(
+ [a, b] = (/*B*/a(), /*B*/b())
+ ) {
+ /*S*/a();
+ /*S*/b();
+ /*B*/}
+
+ ({ a, b } = (/*S*/a(), /*B*/b()));
+`);
+assertBreakpoints(`
+ /*S*/o.a + "42" + /*B*/a() + /*B*/b();
+`);
+assertBreakpoints(`
+ /*S*/a();
+ /*S*/o./*B*/a(/*B*/b());
+`);
+assertBreakpoints(`
+ (/*S*/{}[obj.a] = 42 + /*B*/a());
+`);
+assertBreakpoints(`
+ var {
+ foo = o.a
+ } = /*S*/{};
+`);
+assertBreakpoints(`
+ var ack = /*S*/[
+ o.a,
+ o.b,
+ /*B*/a(),
+ /*B*/a(),
+ /*B*/a(),
+ /*B*/a(),
+ /*B*/a(),
+ /*B*/a(),
+ /*B*/a(),
+ ];
+`);
+
+function assertBreakpoints(expected) {
+ const input = expected.replace(/\/\*[BS]\*\//g, "");
+
+ var global = newGlobal({ newCompartment: true });
+ var dbg = Debugger(global);
+ dbg.onDebuggerStatement = function(frame) {
+ const fScript = frame.environment.parent.getVariable("f").script;
+
+ let positions = [];
+ (function recurse(script) {
+ const bps = script.getPossibleBreakpoints();
+ const offsets = script.getPossibleBreakpointOffsets();
+
+ assertEq(offsets.length, bps.length);
+ for (let i = 0; i < bps.length; i++) {
+ assertEq(offsets[i], bps[i].offset);
+ }
+
+ positions = positions.concat(bps);
+ script.getChildScripts().forEach(recurse);
+ })(fScript);
+
+ const result = annotateOffsets(input, positions);
+ assertEq(result, expected + "/*B*/");
+ };
+
+ global.eval(`function f(){${input}} debugger;`);
+}
+
+function annotateOffsets(code, positions) {
+ const offsetLookup = createOffsetLookup(code);
+
+ positions = positions.slice();
+ positions.sort((a, b) => {
+ const lineDiff = a.lineNumber - b.lineNumber;
+ return lineDiff === 0 ? a.columnNumber - b.columnNumber : lineDiff;
+ });
+ positions.reverse();
+
+ let output = "";
+ let last = code.length;
+ for (const { lineNumber, columnNumber, isStepStart } of positions) {
+ const offset = offsetLookup(lineNumber, columnNumber);
+
+ output =
+ "/*" +
+ (isStepStart ? "S" : "B") +
+ "*/" +
+ code.slice(offset, last) +
+ output;
+ last = offset;
+ }
+ return code.slice(0, last) + output;
+}
+
+function createOffsetLookup(code) {
+ const lines = code.split(/(\r?\n|\r|\u2028|\u2029)/g);
+ const lineOffsets = [];
+
+ let count = 0;
+ for (const [i, str] of lines.entries()) {
+ if (i % 2 === 0) {
+ lineOffsets[i / 2] = count;
+ }
+ count += str.length;
+ }
+
+ return function(line, column) {
+ // Lines from getAllColumnOffsets are 1-based.
+ line = line - 1;
+
+ if (!lineOffsets.hasOwnProperty(line)) {
+ throw new Error("Unknown line " + line + " column " + column);
+ }
+ return lineOffsets[line] + column;
+ };
+}
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