Package org.mvel2.compiler

Examples of org.mvel2.compiler.ExpressionCompiler

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    vars.put("foo",
        new Foo());
    vars.put("$value",
        new Long(5));

    ExpressionCompiler compiler = new ExpressionCompiler("with (foo) { countTest = $value };");

    ParserContext ctx = new ParserContext();
    ctx.setSourceFile("test.mv");
    ctx.setDebugSymbols(true);

    CompiledExpression compiled = compiler.compile(ctx);

    executeExpression(compiled,
        null,
        vars);
    executeExpression(compiled,
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        + "(with ( new Recipient() ) {name = 'userName2', email = 'user2@domain.com' })];\n";

    ParserContext context = new ParserContext();
    context.addImport(Recipient.class);

    ExpressionCompiler compiler = new ExpressionCompiler(text);
    Serializable execution = compiler.compile(context);
    List result = (List) executeExpression(execution,
        new HashMap());
    assertEquals(list,
        result);
  }
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        return 0;
      }
    });

    String src = "a1=7;\na2=8;\na3=9;\na4=10;\na5=11;\na6=12;\na7=13;\na8=14;";
    ExpressionCompiler c = new ExpressionCompiler(src);
    ParserContext ctx = new ParserContext();
    ctx.setSourceFile("mysource");
    ctx.setDebugSymbols(true);
    CompiledExpression compexpr = c.compile(ctx);

    System.out.println(decompile(compexpr));

    MVELRuntime.registerBreakpoint(ctx.getSourceFile(), 1);
    MVELRuntime.registerBreakpoint(ctx.getSourceFile(), 3);
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      }
    });

    String src = "a1=7;\na2=8;\nSystem.out.println(\"h\");\nac=23;\nde=23;\nge=23;\ngef=34;";

    ExpressionCompiler c = new ExpressionCompiler(src);
    ParserContext ctx = new ParserContext();
    ctx.setSourceFile("mysource");
    ctx.setDebugSymbols(true);
    CompiledExpression compexpr = c.compile(ctx);

    System.out.println(decompile(compexpr));

    MVELRuntime.registerBreakpoint(ctx.getSourceFile(), 1);
    MVELRuntime.registerBreakpoint(ctx.getSourceFile(), 2);
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    System.out.println(count);
    assertEquals(5, count);
  }

  public void testBreakpoints() {
    ExpressionCompiler compiler = new ExpressionCompiler("a = 5;\nb = 5;\n\nif (a == b) {\n\nSystem.out.println('Good');\nreturn a + b;\n}\n");
    System.out.println("-------\n" + compiler.getExpression() + "\n-------\n");

    ParserContext ctx = new ParserContext();
    ctx.setSourceFile("test.mv");
    ctx.setDebugSymbols(true);

    CompiledExpression compiled = compiler.compile(ctx);

    MVELRuntime.registerBreakpoint("test.mv", 7);

    final Set<Integer> breaked = new HashSet<Integer>();
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    assertEquals(10, MVEL.executeDebugger(compiled, null, new MapVariableResolverFactory(createTestMap())));
    assertTrue("did not break at line 7", breaked.contains(7));
  }

  public void testBreakpoints2() {
    ExpressionCompiler compiler = new ExpressionCompiler("System.out.println('test the debugger');\n a = 0;");

    ParserContext ctx = new ParserContext();
    ctx.setSourceFile("test.mv");
    ctx.setDebugSymbols(true);

    CompiledExpression compiled = compiler.compile(ctx);
  }
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    String expr = "System.out.println( \"a1\" );\n" +
            "System.out.println( \"a2\" );\n" +
            "System.out.println( \"a3\" );\n" +
            "System.out.println( \"a4\" );\n";

    ExpressionCompiler compiler = new ExpressionCompiler(expr);

    ParserContext context = new ParserContext();
    context.addImport("System", System.class);
    context.setStrictTypeEnforcement(true);
    context.setDebugSymbols(true);
    context.setSourceFile("mysource");

    String s = org.mvel2.debug.DebugTools.decompile(compiler.compile(context));

    System.out.println("output: " + s);

    int fromIndex = 0;
    int count = 0;
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    String line4 = "System.out.println( \"a1\" );\n";
    String expr = line1 + line2 + line3 + line4;

    System.out.println(expr);

    ExpressionCompiler compiler = new ExpressionCompiler(expr);

    ParserContext context = new ParserContext();
    context.addImport("System", System.class);
    context.addImport("Cheese", Cheese.class);
    context.setStrictTypeEnforcement(true);
    context.setDebugSymbols(true);
    context.setSourceFile("mysource");

    String s = org.mvel2.debug.DebugTools.decompile(compiler.compile(context));

    System.out.println("output: " + s);

    int fromIndex = 0;
    int count = 0;
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            "System.out.println('5');\n" +   // 6
            "a = 0;\n" +                     // 7
            "b = 1;\n" +                    // 8
            "a + b";                        // 9

    ExpressionCompiler compiler = new ExpressionCompiler(expression);

    System.out.println("Expression:\n------------");
    System.out.println(expression);
    System.out.println("------------");

    ParserContext ctx = new ParserContext();
    ctx.setSourceFile("test2.mv");
    ctx.setDebugSymbols(true);

    CompiledExpression compiled = compiler.compile(ctx);

    MVELRuntime.registerBreakpoint("test2.mv", 9);

    final Set<Integer> linesEncountered = new HashSet<Integer>();
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    assertEquals(1, MVEL.executeDebugger(compiled, null, new MapVariableResolverFactory(createTestMap())));
    assertTrue("Debugger did not break at line 9", linesEncountered.contains(9));
  }

  public void testBreakpointsAcrossComments2() {
    ExpressionCompiler compiler = new ExpressionCompiler(
            "// This is a comment\n" +                  // 1
                    "//Second comment line\n" +         // 2
                    "//Third Comment Line\n" +          // 3
                    "\n" +                              // 4
                    "//Test\n" +                        // 5
                    "System.out.println('4');\n" +      // 6
                    "//System.out.println('5'); \n" +    // 7
                    "a = 0;\n" +                        // 8
                    "b = 1;\n" +                        // 9
                    " a + b");                          // 10


    ParserContext ctx = new ParserContext();
    ctx.setSourceFile("test2.mv");
    ctx.setDebugSymbols(true);

    CompiledExpression compiled = compiler.compile(ctx);

    MVELRuntime.registerBreakpoint("test2.mv", 6);
    MVELRuntime.registerBreakpoint("test2.mv", 8);
    MVELRuntime.registerBreakpoint("test2.mv", 9);
    MVELRuntime.registerBreakpoint("test2.mv", 10);
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Related Classes of org.mvel2.compiler.ExpressionCompiler

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  • org.drools.base.ClassFieldAccessorFactory
  • org.drools.base.extractors.MVELClassFieldReader
  • org.drools.base.extractors.MVELObjectClassFieldReader
  • org.drools.base.ModifyInterceptor
  • org.drools.base.mvel.DroolsMVELFactory
  • org.drools.base.mvel.DroolsProcessMVELFactory
  • org.drools.base.mvel.MVELAccumulator
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