mirror of
https://github.com/danog/dart-sass.git
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Add Environment.defineFunction().
This commit is contained in:
Natalie Weizenbaum
Natalie Weizenbaum
parent
158ac11d43
commit
816e32f08b
@ -123,6 +123,10 @@ class Environment {
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_functions[_functions.length - 1][callable.name] = callable;
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}
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void defineFunction(String name, String arguments,
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Value callback(List<Value> arguments)) =>
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setFunction(new BuiltInCallable(name, arguments, callback));
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Callable getMixin(String name) {
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var index = _mixinIndices[name];
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if (index != null) _mixins[index][name];
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@ -17,8 +17,7 @@ final _random = new math.Random();
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void defineCoreFunctions(Environment environment) {
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// ## RGB
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environment.setFunction(
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new BuiltInCallable("rgb", r"$red, $green, $blue", (arguments) {
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environment.defineFunction("rgb", r"$red, $green, $blue", (arguments) {
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// TODO: support calc strings
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var red = arguments[0].assertNumber("red");
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var green = arguments[1].assertNumber("green");
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@ -28,7 +27,7 @@ void defineCoreFunctions(Environment environment) {
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fuzzyRound(_percentageOrUnitless(red, 255, "red")),
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fuzzyRound(_percentageOrUnitless(green, 255, "green")),
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fuzzyRound(_percentageOrUnitless(blue, 255, "blue")));
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}));
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});
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environment.setFunction(new BuiltInCallable.overloaded("rgba", [
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r"$red, $green, $blue, $alpha",
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@ -54,40 +53,40 @@ void defineCoreFunctions(Environment environment) {
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}
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]));
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environment.setFunction(new BuiltInCallable("red", r"$color", (arguments) {
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environment.defineFunction("red", r"$color", (arguments) {
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return new SassNumber(arguments.first.assertColor("color").red);
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}));
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});
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environment.setFunction(new BuiltInCallable("green", r"$color", (arguments) {
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environment.defineFunction("green", r"$color", (arguments) {
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return new SassNumber(arguments.first.assertColor("color").green);
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}));
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});
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environment.setFunction(new BuiltInCallable("blue", r"$color", (arguments) {
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environment.defineFunction("blue", r"$color", (arguments) {
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return new SassNumber(arguments.first.assertColor("color").blue);
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}));
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});
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environment.setFunction(new BuiltInCallable(
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"mix", r"$color1, $color2, $weight: 50%", (arguments) {
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environment.defineFunction("mix", r"$color1, $color2, $weight: 50%",
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(arguments) {
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var color1 = arguments[0].assertColor("color1");
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var color2 = arguments[1].assertColor("color2");
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var weight = arguments[2].assertNumber("weight");
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return _mix(color1, color2, weight);
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}));
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});
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// ## HSL
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environment.setFunction(
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new BuiltInCallable("hsl", r"$hue, $saturation, $lightness", (arguments) {
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environment.defineFunction("hsl", r"$hue, $saturation, $lightness",
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(arguments) {
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// TODO: support calc strings
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var hue = arguments[0].assertNumber("hue");
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var saturation = arguments[1].assertNumber("saturation");
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var lightness = arguments[2].assertNumber("lightness");
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return new SassColor.hsl(hue.value, saturation.value, lightness.value);
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}));
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});
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environment.setFunction(new BuiltInCallable(
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"hsla", r"$hue, $saturation, $lightness, $alpha", (arguments) {
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environment.defineFunction("hsla", r"$hue, $saturation, $lightness, $alpha",
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(arguments) {
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// TODO: support calc strings
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var hue = arguments[0].assertNumber("hue");
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var saturation = arguments[1].assertNumber("saturation");
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@ -96,79 +95,75 @@ void defineCoreFunctions(Environment environment) {
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return new SassColor.hsl(hue.value, saturation.value, lightness.value,
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_percentageOrUnitless(alpha, 1, "alpha"));
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}));
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});
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environment.setFunction(new BuiltInCallable("hue", r"$color", (arguments) {
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return new SassNumber(arguments.first.assertColor("color").hue, "deg");
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}));
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environment.defineFunction(
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"hue",
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r"$color",
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(arguments) =>
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new SassNumber(arguments.first.assertColor("color").hue, "deg"));
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environment
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.setFunction(new BuiltInCallable("saturation", r"$color", (arguments) {
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return new SassNumber(arguments.first.assertColor("color").saturation, "%");
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}));
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environment.defineFunction(
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"saturation",
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r"$color",
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(arguments) =>
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new SassNumber(arguments.first.assertColor("color").saturation, "%"));
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environment
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.setFunction(new BuiltInCallable("lightness", r"$color", (arguments) {
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return new SassNumber(arguments.first.assertColor("color").lightness, "%");
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}));
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environment.defineFunction(
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"lightness",
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r"$color",
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(arguments) =>
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new SassNumber(arguments.first.assertColor("color").lightness, "%"));
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environment.setFunction(
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new BuiltInCallable("adjust-hue", r"$color, $degrees", (arguments) {
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environment.defineFunction("adjust-hue", r"$color, $degrees", (arguments) {
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var color = arguments[0].assertColor("color");
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var degrees = arguments[1].assertNumber("degrees");
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return color.changeHsl(hue: color.hue + degrees.value);
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}));
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});
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environment.setFunction(
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new BuiltInCallable("lighten", r"$color, $amount", (arguments) {
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environment.defineFunction("lighten", r"$color, $amount", (arguments) {
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var color = arguments[0].assertColor("color");
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var amount = arguments[1].assertNumber("amount");
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return color.changeHsl(
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lightness: color.lightness + amount.valueInRange(0, 100, "amount"));
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}));
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});
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environment.setFunction(
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new BuiltInCallable("darken", r"$color, $amount", (arguments) {
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environment.defineFunction("darken", r"$color, $amount", (arguments) {
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var color = arguments[0].assertColor("color");
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var amount = arguments[1].assertNumber("amount");
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return color.changeHsl(
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lightness: color.lightness - amount.valueInRange(0, 100, "amount"));
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}));
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});
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environment.setFunction(
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new BuiltInCallable("saturate", r"$color, $amount", (arguments) {
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environment.defineFunction("saturate", r"$color, $amount", (arguments) {
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var color = arguments[0].assertColor("color");
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var amount = arguments[1].assertNumber("amount");
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return color.changeHsl(
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saturation: color.saturation + amount.valueInRange(0, 100, "amount"));
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}));
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});
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environment.setFunction(
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new BuiltInCallable("desaturate", r"$color, $amount", (arguments) {
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environment.defineFunction("desaturate", r"$color, $amount", (arguments) {
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var color = arguments[0].assertColor("color");
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var amount = arguments[1].assertNumber("amount");
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return color.changeHsl(
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saturation: color.saturation - amount.valueInRange(0, 100, "amount"));
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}));
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});
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environment
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.setFunction(new BuiltInCallable("grayscale", r"$color", (arguments) {
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environment.defineFunction("grayscale", r"$color", (arguments) {
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if (arguments[0] is SassNumber) {
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return new SassString("grayscale(${arguments[0]})");
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}
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var color = arguments[0].assertColor("color");
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return color.changeHsl(saturation: 0);
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}));
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});
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environment
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.setFunction(new BuiltInCallable("complement", r"$color", (arguments) {
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environment.defineFunction("complement", r"$color", (arguments) {
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var color = arguments[0].assertColor("color");
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return color.changeHsl(hue: color.hue + 180);
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}));
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});
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environment.setFunction(
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new BuiltInCallable("invert", r"$color, $weight: 50%", (arguments) {
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environment.defineFunction("invert", r"$color, $weight: 50%", (arguments) {
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if (arguments[0] is SassNumber) {
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// TODO: find some way of ensuring this is stringified using the right
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// options. We may need to resort to zones.
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@ -182,7 +177,7 @@ void defineCoreFunctions(Environment environment) {
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if (weight.value == 50) return inverse;
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return _mix(color, inverse, weight);
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}));
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});
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// ## Opacity
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@ -217,27 +212,24 @@ void defineCoreFunctions(Environment environment) {
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}
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]));
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environment
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.setFunction(new BuiltInCallable("opacity", r"$color", (arguments) {
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environment.defineFunction("opacity", r"$color", (arguments) {
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if (arguments[0] is SassNumber) {
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return new SassString("opacity(${arguments[0]})");
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}
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var color = arguments[0].assertColor("color");
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return new SassNumber(color.alpha);
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}));
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});
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environment.setFunction(new BuiltInCallable("opacify", r"$color", _opacify));
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environment.setFunction(new BuiltInCallable("fade-in", r"$color", _opacify));
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environment.setFunction(
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new BuiltInCallable("transparentize", r"$color", _transparentize));
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environment
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.setFunction(new BuiltInCallable("fade-out", r"$color", _transparentize));
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environment.defineFunction("opacify", r"$color", _opacify);
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environment.defineFunction("fade-in", r"$color", _opacify);
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environment.defineFunction("transparentize", r"$color", _transparentize);
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environment.defineFunction("fade-out", r"$color", _transparentize);
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// ## Miscellaneous Color
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environment.setFunction(
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new BuiltInCallable("adjust-color", r"$color, $kwargs...", (arguments) {
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environment.defineFunction("adjust-color", r"$color, $kwargs...",
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(arguments) {
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var color = arguments[0].assertColor("color");
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var argumentList = arguments[1] as SassArgumentList;
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if (argumentList.contents.isNotEmpty) {
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@ -286,10 +278,9 @@ void defineCoreFunctions(Environment environment) {
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} else {
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return color.changeAlpha(color.alpha + (alpha ?? 0));
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}
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}));
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});
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environment.setFunction(
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new BuiltInCallable("scale-color", r"$color, $kwargs...", (arguments) {
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environment.defineFunction("scale-color", r"$color, $kwargs...", (arguments) {
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var color = arguments[0].assertColor("color");
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var argumentList = arguments[1] as SassArgumentList;
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if (argumentList.contents.isNotEmpty) {
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@ -346,10 +337,10 @@ void defineCoreFunctions(Environment environment) {
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} else {
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return color.changeAlpha(scaleValue(color.alpha, alpha, 1));
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}
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}));
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});
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environment.setFunction(
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new BuiltInCallable("change-color", r"$color, $kwargs...", (arguments) {
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environment.defineFunction("change-color", r"$color, $kwargs...",
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(arguments) {
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var color = arguments[0].assertColor("color");
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var argumentList = arguments[1] as SassArgumentList;
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if (argumentList.contents.isNotEmpty) {
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@ -391,41 +382,38 @@ void defineCoreFunctions(Environment environment) {
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} else {
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return color.changeAlpha(alpha);
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}
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}));
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});
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environment
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.setFunction(new BuiltInCallable("ie-hex-str", r"$color", (arguments) {
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environment.defineFunction("ie-hex-str", r"$color", (arguments) {
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var color = arguments[0].assertColor("color");
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hexString(int component) =>
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component.toRadixString(16).padLeft(2, '0').toUpperCase();
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return new SassString(
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"#${hexString(fuzzyRound(color.alpha * 255))}${hexString(color.red)}"
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"${hexString(color.green)}${hexString(color.blue)}");
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}));
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});
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// ## String
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environment
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.setFunction(new BuiltInCallable("unquote", r"$string", (arguments) {
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environment.defineFunction("unquote", r"$string", (arguments) {
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var string = arguments[0].assertString("string");
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if (!string.hasQuotes) return string;
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return new SassString(string.text);
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}));
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});
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environment.setFunction(new BuiltInCallable("quote", r"$string", (arguments) {
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environment.defineFunction("quote", r"$string", (arguments) {
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var string = arguments[0].assertString("string");
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if (string.hasQuotes) return string;
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return new SassString(string.text, quotes: true);
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}));
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});
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environment
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.setFunction(new BuiltInCallable("str-length", r"$string", (arguments) {
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environment.defineFunction("str-length", r"$string", (arguments) {
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var string = arguments[0].assertString("string");
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return new SassNumber(string.text.runes.length);
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}));
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});
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environment.setFunction(new BuiltInCallable(
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"str-insert", r"$string, $insert, $index", (arguments) {
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environment.defineFunction("str-insert", r"$string, $insert, $index",
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(arguments) {
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var string = arguments[0].assertString("string");
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var insert = arguments[1].assertString("insert");
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var index = arguments[2].assertNumber("index");
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@ -436,10 +424,9 @@ void defineCoreFunctions(Environment environment) {
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return new SassString(
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string.text.replaceRange(codeUnitIndex, codeUnitIndex, insert.text),
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quotes: string.hasQuotes);
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}));
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});
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environment.setFunction(
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new BuiltInCallable("str-index", r"$string, $substring", (arguments) {
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environment.defineFunction("str-index", r"$string, $substring", (arguments) {
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var string = arguments[0].assertString("string");
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var substring = arguments[1].assertString("substring");
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@ -448,10 +435,10 @@ void defineCoreFunctions(Environment environment) {
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var codePointIndex =
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codeUnitIndexToCodepointIndex(string.text, codeUnitIndex);
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return new SassNumber(codePointIndex + 1);
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}));
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});
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environment.setFunction(new BuiltInCallable(
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"str-slice", r"$string, $start-at, $end-at: -1", (arguments) {
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environment.defineFunction("str-slice", r"$string, $start-at, $end-at: -1",
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(arguments) {
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var string = arguments[0].assertString("string");
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var start = arguments[1].assertNumber("start-at");
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var end = arguments[2].assertNumber("end-at");
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@ -467,36 +454,32 @@ void defineCoreFunctions(Environment environment) {
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codepointIndexToCodeUnitIndex(string.text, startCodepoint),
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codepointIndexToCodeUnitIndex(string.text, endCodepoint) + 1),
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quotes: string.hasQuotes);
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}));
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});
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environment.setFunction(
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new BuiltInCallable("to-upper-case", r"$string", (arguments) {
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environment.defineFunction("to-upper-case", r"$string", (arguments) {
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var string = arguments[0].assertString("string");
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return new SassString(string.text.toUpperCase(), quotes: string.hasQuotes);
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}));
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});
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environment.setFunction(
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new BuiltInCallable("to-lower-case", r"$string", (arguments) {
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environment.defineFunction("to-lower-case", r"$string", (arguments) {
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var string = arguments[0].assertString("string");
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return new SassString(string.text.toLowerCase(), quotes: string.hasQuotes);
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}));
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});
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// ## Number
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environment
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.setFunction(new BuiltInCallable("percentage", r"$number", (arguments) {
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environment.defineFunction("percentage", r"$number", (arguments) {
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var number = arguments[0].assertNumber("number");
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number.assertNoUnits("number");
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return new SassNumber(number.value * 100, '%');
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}));
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});
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environment.setFunction(_numberFunction("round", fuzzyRound));
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environment.setFunction(_numberFunction("ceil", (value) => value.ceil()));
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environment.setFunction(_numberFunction("floor", (value) => value.floor()));
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environment.setFunction(_numberFunction("abs", (value) => value.abs()));
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environment
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.setFunction(new BuiltInCallable("max", r"$numbers...", (arguments) {
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environment.defineFunction("max", r"$numbers...", (arguments) {
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SassNumber max;
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for (var value in arguments[0].asList) {
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var number = value.assertNumber();
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@ -504,10 +487,9 @@ void defineCoreFunctions(Environment environment) {
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}
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if (max != null) return max;
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throw new InternalException("At least one argument must be passed.");
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}));
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});
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environment
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.setFunction(new BuiltInCallable("min", r"$numbers...", (arguments) {
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environment.defineFunction("min", r"$numbers...", (arguments) {
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SassNumber min;
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for (var value in arguments[0].asList) {
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var number = value.assertNumber();
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@ -515,10 +497,9 @@ void defineCoreFunctions(Environment environment) {
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}
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if (min != null) return min;
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throw new InternalException("At least one argument must be passed.");
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}));
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});
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environment
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.setFunction(new BuiltInCallable("random", r"$limit: null", (arguments) {
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environment.defineFunction("random", r"$limit: null", (arguments) {
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if (arguments[0] == sassNull) return new SassNumber(_random.nextDouble());
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var limit = arguments[0].assertNumber("limit").assertInt("limit");
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if (limit < 1) {
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@ -526,12 +507,12 @@ void defineCoreFunctions(Environment environment) {
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"\$limit: Must be greater than 0, was $limit.");
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}
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return new SassNumber(_random.nextInt(limit + 1) + 1);
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}));
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});
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// ## Introspection
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environment.setFunction(new BuiltInCallable("inspect", r"$value",
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(arguments) => new SassString(arguments.first.toString())));
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environment.defineFunction("inspect", r"$value",
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(arguments) => new SassString(arguments.first.toString()));
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}
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num _percentageOrUnitless(SassNumber number, num max, String name) {
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