1 files changed, 114 insertions, 0 deletions
diff --git a/platform/android/scripts/generate-style-code.js b/platform/android/scripts/generate-style-code.js
new file mode 100644
index 0000000000..03bfac8067
--- /dev/null
+++ b/platform/android/scripts/generate-style-code.js
@@ -0,0 +1,114 @@
+'use strict';
+
+const fs = require('fs');
+const ejs = require('ejs');
+const spec = require('mapbox-gl-style-spec').latest;
+const _ = require('lodash');
+
+global.iff = function (condition, val) {
+  return condition() ? val : "";
+}
+
+
+global.camelize = function (str) {
+  return str.replace(/(?:^|-)(.)/g, function (_, x) {
+    return x.toUpperCase();
+  });
+}
+
+global.camelizeWithLeadingLowercase = function (str) {
+  return str.replace(/-(.)/g, function (_, x) {
+    return x.toUpperCase();
+  });
+}
+
+global.snakeCaseUpper = function (str) {
+  return str.replace(/-/g, "_").toUpperCase();
+}
+
+global.propertyType = function propertyType(property) {
+//TODO: Doe we want these exceptions?
+//  if (/-translate-anchor$/.test(property.name)) {
+     //    return 'TranslateAnchorType';
+     //  }
+     //  if (/-(rotation|pitch)-alignment$/.test(property.name)) {
+     //    return 'AlignmentType';
+     //  }
+  switch (property.type) {
+      case 'boolean':
+        return 'Boolean';
+      case 'number':
+        return 'Float';
+      case 'string':
+        return 'String';
+      case 'enum':
+        return `String`;
+      case 'color':
+        return `String`;
+      case 'array':
+        return `${propertyType({type:property.value})}[]`;
+      default:
+        throw new Error(`unknown type for ${property.name}`);
+  }
+}
+
+global.propertyTypeAnnotation = function propertyTypeAnnotation(property) {
+  switch (property.type) {
+      case 'enum':
+        return `@Property.${snakeCaseUpper(property.name)}`;
+      default:
+        return "";
+  }
+};
+
+//Process Layers
+const layers = spec.layer.type.values.map((type) => {
+  const layoutProperties = Object.keys(spec[`layout_${type}`]).reduce((memo, name) => {
+    if (name !== 'visibility') {
+      spec[`layout_${type}`][name].name = name;
+      memo.push(spec[`layout_${type}`][name]);
+    }
+    return memo;
+  }, []);
+
+  const paintProperties = Object.keys(spec[`paint_${type}`]).reduce((memo, name) => {
+    spec[`paint_${type}`][name].name = name;
+    memo.push(spec[`paint_${type}`][name]);
+    return memo;
+  }, []);
+
+  return {
+    type: type,
+    layoutProperties: layoutProperties,
+    paintProperties: paintProperties,
+  };
+});
+
+const layerHpp = ejs.compile(fs.readFileSync('platform/android/scripts/layer.hpp.ejs', 'utf8'), {strict: true});
+const layerCpp = ejs.compile(fs.readFileSync('platform/android/scripts/layer.cpp.ejs', 'utf8'), {strict: true});
+const layerJava = ejs.compile(fs.readFileSync('platform/android/scripts/layer.java.ejs', 'utf8'), {strict: true});
+
+for (const layer of layers) {
+  fs.writeFileSync(`platform/android/src/style/layers/${layer.type}_layer.hpp`, layerHpp(layer));
+  fs.writeFileSync(`platform/android/src/style/layers/${layer.type}_layer.cpp`, layerCpp(layer));
+  fs.writeFileSync(`platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/${camelize(layer.type)}Layer.java`, layerJava(layer));
+}
+
+//Process all layer properties
+const layoutProperties = _(layers).map('layoutProperties').flatten().value();
+const paintProperties = _(layers).map('paintProperties').flatten().value();
+
+const propertiesTemplate = ejs.compile(fs.readFileSync('platform/android/scripts/layer_property_factory.java.ejs', 'utf8'), {strict: true});
+fs.writeFileSync(
+    `platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/PropertyFactory.java`,
+    propertiesTemplate({layoutProperties: layoutProperties, paintProperties: paintProperties})
+);
+
+//Create types for the enum properties
+const enumProperties = _(layoutProperties).union(paintProperties).filter({'type': 'enum'}).value();
+const enumPropertyTemplate = ejs.compile(fs.readFileSync('platform/android/scripts/layer_property.java.ejs', 'utf8'), {strict: true});
+fs.writeFileSync(
+    `platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/style/layers/Property.java`,
+    enumPropertyTemplate({properties: enumProperties})
+);
+