michael@0: // getLineOffsets works with extended instructions, such as JSOP_GOTOX.
michael@0: 
michael@0: var g = newGlobal();
michael@0: g.line0 = null;
michael@0: var dbg = Debugger(g);
michael@0: var where;
michael@0: dbg.onDebuggerStatement = function (frame) {
michael@0:     var s = frame.script;
michael@0:     var offs;
michael@0:     var lineno = g.line0 + where;
michael@0:     offs = s.getLineOffsets(lineno);
michael@0:     for (var i = 0; i < offs.length; i++) {
michael@0:         assertEq(s.getOffsetLine(offs[i]), lineno);
michael@0:         s.setBreakpoint(offs[i], {hit: function (frame) { g.log += 'B'; }});
michael@0:     }
michael@0:     g.log += 'A';
michael@0: };
michael@0: 
michael@0: function test(s) {
michael@0:     assertEq(s.charAt(s.length - 1) !== '\n', true);
michael@0:     var count = s.split(/\n/).length;  // number of lines in s
michael@0:     g.i = 0;
michael@0:     g.log = '';
michael@0:     where = 1 + count;
michael@0:     g.eval("line0 = Error().lineNumber;\n" +
michael@0:            "debugger;\n" +          // line0 + 1
michael@0:            s +                      // line0 + 2 ... line0 + where
michael@0:            " log += 'C';\n");
michael@0:     assertEq(g.log, 'ABC');
michael@0: }
michael@0: 
michael@0: function repeat(s) {
michael@0:     return Array((1 << 14) + 1).join(s);  // 16K copies of s
michael@0: }
michael@0: var long_expr = "i" + repeat(" + i");
michael@0: var long_throw_stmt = "throw " + long_expr + ";\n";
michael@0: 
michael@0: // long break (JSOP_GOTOX)
michael@0: test("for (;;) {\n" +
michael@0:      "    if (i === 0)\n" +
michael@0:      "        break;\n" +
michael@0:      "    " + long_throw_stmt +
michael@0:      "}");
michael@0: 
michael@0: // long continue (JSOP_GOTOX)
michael@0: test("do {\n" +
michael@0:      "    if (i === 0)\n" +
michael@0:      "        continue;\n" +
michael@0:      "    " + long_throw_stmt +
michael@0:      "} while (i !== 0);");
michael@0: 
michael@0: // long if consequent (JSOP_IFEQX)
michael@0: test("if (i === 2) {\n" +
michael@0:      "    " + long_throw_stmt +
michael@0:      "}");
michael@0: 
michael@0: // long catch-block with finally (JSOP_GOSUBX)
michael@0: test("try {\n" +
michael@0:      "    i = 0;\n" +
michael@0:      "} catch (exc) {\n" +
michael@0:      "    throw " + long_expr + ";\n" +
michael@0:      "} finally {\n" +
michael@0:      "    i = 1;\n" +
michael@0:      "}");
michael@0: 
michael@0: // long case (JSOP_TABLESWITCHX)
michael@0: test("switch (i) {\n" +
michael@0:      "  default:\n" +
michael@0:      "  case 1: " + long_throw_stmt +
michael@0:      "  case 0: i++; }");
michael@0: 
michael@0: test("switch (i) {\n" +
michael@0:      "  case 1: case 2: case 3: " + long_throw_stmt +
michael@0:      "  default: i++; }");
michael@0: 
michael@0: // long case (JSOP_LOOKUPSWITCHX)
michael@0: test("switch ('' + i) {\n" +
michael@0:      "  default:\n" +
michael@0:      "  case '1': " + long_throw_stmt +
michael@0:      "  case '0': i++; }");
michael@0: 
michael@0: test("switch (i) {\n" +
michael@0:      "  case '1': case '2': case '3': " + long_throw_stmt +
michael@0:      "  default: i++; }");
michael@0: 
michael@0: // long case or case-expression (JSOP_CASEX)
michael@0: test("switch (i) {\n" +
michael@0:      "  case i + 1 - i:\n" +
michael@0:      "  default:\n" +
michael@0:      "    " + long_throw_stmt +
michael@0:      "  case i + i:\n" +
michael@0:      "    i++; break; }");
michael@0: 
michael@0: // long case when JSOP_CASE is used (JSOP_DEFAULTX)
michael@0: test("switch (i) {\n" +
michael@0:      "  case i + 1 - i:\n" +
michael@0:      "    " + long_throw_stmt +
michael@0:      "  default:\n" +
michael@0:      "    i++; break; }");