Examples of org.stringtemplate.v4.STGroup

org.stringtemplate.v4.STGroup
A directory or directory tree of .st template files and/or group files. Individual template files contain formal template definitions. In a sense, it's like a single group file broken into multiple files, one for each template. ST v3 had just the pure template inside, not the template name and header. Name inside must match filename (minus suffix).

  public void testEarlyEval2() throws Exception {
    String templates = "main() ::= <<\n<f(p=\"x\")>*\n>>\n\n"
        + "f(p,q={<({a<p>})>}) ::= <<\n-<q>-\n>>";
    writeFile(tmpdir, "t.stg", templates);


    STGroup group = new STGroupFile(tmpdir + "/t.stg");


    ST st = group.getInstanceOf("main");


    String s = st.render();
    Assert.assertEquals("-ax-*", s);


    // When <f(...)> is invoked only once inspect throws no Exception in

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        + "t2() ::= \"Hello\"\n" //
        + "t(x={<(t2())>}) ::= \"<x>\"";


    writeFile(tmpdir, "t.stg", templates);


    STGroup group = new STGroupFile(tmpdir + "/t.stg");


    ST st = group.getInstanceOf("main");


    String s = st.render();
    Assert.assertEquals("Hello", s);


    // Inspecting this template threw an ArrayIndexOutOfBoundsException

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  @Test
  public void testEarlyEvalInIfExpr() throws Exception {
    String templates = "main(x) ::= << <if((x))>foo<else>bar<endif> >>";
    writeFile(tmpdir, "t.stg", templates);


    STGroup group = new STGroupFile(tmpdir + "/t.stg");


    ST st = group.getInstanceOf("main");


    String s = st.render();
    Assert.assertEquals(" bar ", s);


    st.add("x", "true");

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  @Test
  public void testEarlyEvalOfSubtemplateInIfExpr() throws Exception {
    String templates = "main(x) ::= << <if(({a<x>b}))>foo<else>bar<endif> >>";
    writeFile(tmpdir, "t.stg", templates);


    STGroup group = new STGroupFile(tmpdir + "/t.stg");


    ST st = group.getInstanceOf("main");


    String s = st.render();
    Assert.assertEquals(" foo ", s);
  }

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      "  default: \"other\"\n"+
      "]\n" +
      "main(x) ::= << p<x>t: <m.({p<x>t})>, <if(m.({p<x>t}))>if<else>else<endif> >>\n";
    writeFile(tmpdir, "t.stg", templates);


    STGroup group = new STGroupFile(tmpdir + "/t.stg");


    ST st = group.getInstanceOf("main");


    st.add("x", null);
    String s = st.render();
    Assert.assertEquals(" pt: other, if ", s);

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  public void testEarlyEvalOfMapInIfExprPassInHashMap() throws Exception {
    String templates =
      "main(m,x) ::= << p<x>t: <m.({p<x>t})>, <if(m.({p<x>t}))>if<else>else<endif> >>\n";
    writeFile(tmpdir, "t.stg", templates);


    STGroup group = new STGroupFile(tmpdir + "/t.stg");


    ST st = group.getInstanceOf("main");
    st.add("m", new HashMap<String, String>() {{put("parrt","value");}});


    st.add("x", null);
    String s = st.render();
    Assert.assertEquals(" pt: , else ", s); // m[null] has no default value so else clause

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      "\n" +
      "\n" +
      "]\n" +
      "\n" +
      "%>\n";
    STGroup g = new STGroupString(template);
    ST st = g.getInstanceOf("t");
    st.add("x", 99);
    String expected = "[  99]";
    String result = st.render();
    assertEquals(expected, result);
  }

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  @Test public void testWSNoNewlineTemplate() throws Exception {
    String template =
      "t(x) ::= <%\n" +
      "\n" +
      "%>\n";
    STGroup g = new STGroupString(template);
    ST st = g.getInstanceOf("t");
    st.add("x", 99);
    String expected = "";
    String result = st.render();
    assertEquals(expected, result);
  }

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  }


  @Test public void testEmptyNoNewlineTemplate() throws Exception {
    String template =
      "t(x) ::= <%%>\n";
    STGroup g = new STGroupString(template);
    ST st = g.getInstanceOf("t");
    st.add("x", 99);
    String expected = "";
    String result = st.render();
    assertEquals(expected, result);
  }

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    String template =
      "t(x) ::= <%\n" +
      "  foo\n" +
      "  <x>\n" +
      "%>\n";
    STGroup g = new STGroupString(template);
    ST st = g.getInstanceOf("t");
    st.add("x", 99);
    String expected = "foo99";
    String result = st.render();
    assertEquals(expected, result);
  }

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