Examples with Context com.squarespace.template.Context used on opensource projects

Example 71 with Context

use of com.squarespace.template.Context in project template-compiler by Squarespace.

the class ExprTest method testSubtract.

@Test
public void testSubtract() {
    Context c = new Context(JsonUtils.decode("{\"a\": 5}"));
    assertEquals(reduce("a - 1", c), new DoubleNode(4));
    assertEquals(reduce("\"foo\" - 1", c), new DoubleNode(Double.NaN));
}

Example 72 with Context

use of com.squarespace.template.Context in project template-compiler by Squarespace.

the class ExprTest method testAssignment.

@Test
public void testAssignment() {
    Expr e;
    Context c = new Context(JsonUtils.createObjectNode());
    c.setVar("@c", new DoubleNode(3));
    e = new Expr("@a = 6; @b = 2 * @a; @b / @c");
    e.build();
    assertEquals(c.getErrors(), emptyList());
    assertEquals(e.reduce(c), new DoubleNode(4));
    assertEquals(c.resolve(new Object[] { "@a" }), new DoubleNode(6));
    assertEquals(c.resolve(new Object[] { "@b" }), new DoubleNode(12));
    // invalid assignments
    e = new Expr("a = 1");
    assertEquals(e.tokens().elems(), asList(varn("a"), ASN, num(1)));
    e.build();
    assertEquals(e.reduce(c), null);
    e = new Expr("a.b.c = 1");
    assertEquals(e.tokens().elems(), asList(varn("a.b.c"), ASN, num(1)));
    e.build();
    assertEquals(e.reduce(c), null);
    e = new Expr("* = /");
    assertEquals(e.tokens().elems(), asList(MUL, ASN, DIV));
    e.build();
    assertEquals(e.reduce(c), null);
    e = new Expr("1 = 1");
    assertEquals(e.tokens().elems(), asList(num(1), ASN, num(1)));
    e.build();
    assertEquals(e.reduce(c), null);
    // '@' cannot be assigned
    e = new Expr("@ = 1");
    assertEquals(e.tokens().elems(), asList(varn("@"), ASN, num(1)));
    e.build();
    assertEquals(e.reduce(c), null);
    e = new Expr("@=@=@=3");
    e.build();
    assertEquals(e.reduce(c), null);
    e = new Expr("=@");
    e.build();
    assertEquals(e.reduce(c), null);
    e = new Expr("5=@");
    e.build();
    assertEquals(e.reduce(c), null);
    e = new Expr("5=5");
    e.build();
    assertEquals(e.reduce(c), null);
}

Example 73 with Context

use of com.squarespace.template.Context in project template-compiler by Squarespace.

the class ExprTest method testFunctionCalls.

@Test
public void testFunctionCalls() {
    Context c = ctx();
    Expr e;
    // min() takes the minimum of all of its numeric arguments
    assertEquals(reduce("min ( )", c), null);
    assertEquals(reduce("min(\"foo\")", c), new DoubleNode(Double.NaN));
    assertEquals(reduce("min(\"foo\", 5, -5)", c), new DoubleNode(-5));
    assertEquals(reduce("min(5, -3, 10, -100, 17, 1000)", c), new DoubleNode(-100));
    // max() takes the maximum of all of its numeric arguments
    assertEquals(reduce("max(\"foo\", 5, -5)", c), new DoubleNode(5));
    // abs() operates only on the first argument that converts cleanly to a number
    assertEquals(reduce("abs()", c), null);
    assertEquals(reduce("abs(-5, -10, -20, -30)", c), new DoubleNode(5));
    assertEquals(reduce("abs(\"foo\")", c), new DoubleNode(Double.NaN));
    assertEquals(reduce("abs(\"-12\")", c), new DoubleNode(12));
    // bad functions
    e = new Expr("1 + a(1, 2)");
    assertTrue(e.errors().get(0).contains("Invalid function"));
    // a variable reference next to a parenthesis will stop
    // accepting tokens, terminating the expression early
    c = ctx("{\"a\": 123}");
    assertEquals(reduce("1 + a (2, 3, 4)", c), null);
    assertEquals(reduce("foobar ( 1, 2, 3 )", c), null);
    // missing nodes will reduce to null
    assertEquals(reduce("missing", c), NullNode.getInstance());
    // invalid function reference
    assertEquals(reduce("@(3)", c), new DoubleNode(3));
    assertEquals(reduce("@.a(3)", c), new DoubleNode(3));
    assertEquals(reduce("@.@(3)", c), new DoubleNode(3));
}