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JavaTranspiler.js
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JavaTranspiler.js
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/**
* Copyright (c) 2014, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
function __transpileToJavaCommon(code) {
return code
.replace(/CSS_UNDEFINED/g, 'CSSConstants.UNDEFINED')
.replace(/CSS_JUSTIFY_/g, 'CSSJustify.')
.replace(/CSS_ALIGN_/g, 'CSSAlign.')
.replace(/CSS_POSITION_/g, 'CSSPositionType.')
.replace(/css_flex_direction_t/g, 'CSSFlexDirection')
.replace(/css_direction_t/g, 'CSSDirection')
.replace(/css_align_t/g, 'CSSAlign')
.replace(/css_justify_t/g, 'CSSJustify')
.replace(/css_dim_t/g, 'MeasureOutput')
.replace(/bool/g, 'boolean')
.replace(/style\[dim/g, 'style.dimensions[dim')
.replace(/(style|layout)\.width/g, '$1.dimensions[DIMENSION_WIDTH]')
.replace(/(style|layout)\.height/g, '$1.dimensions[DIMENSION_HEIGHT]')
.replace(/layout\[dim/g, 'layout.dimensions[dim')
.replace(/layout\[pos/g, 'layout.position[pos')
.replace(/layout\[leading/g, 'layout.position[leading')
.replace(/layout\[trailing/g, 'layout.position[trailing')
.replace(/getPositionType\((.+?)\)/g, '$1.style.positionType')
.replace(/getJustifyContent\((.+?)\)/g, '$1.style.justifyContent')
.replace(/getAlignContent\((.+?)\)/g, '$1.style.alignContent')
.replace(/isPosDefined\((.+?),\s*(.+?)\)/g, '!isUndefined\($1.style.position[$2]\)')
.replace(/isDimDefined\((.+?),\s*(.+?)\)/g, '\(!isUndefined\($1.style.dimensions[dim[$2]]\) && $1.style.dimensions[dim[$2]] >= 0.0\)')
.replace(/getPosition\((.+?),\s*(.+?)\)/g, '\(isUndefined\($1.style.position[$2]\) ? 0 : $1.style.position[$2]\)')
.replace(/setTrailingPosition\((.+?),\s*(.+?),\s*(.+?)\)/g, '$2.layout.position[trailing[$3]] = $1.layout.dimensions[dim[$3]] - $2.layout.dimensions[dim[$3]] - $2.layout.position[pos[$3]]')
.replace(/isFlex\((.+?)\)/g, '\($1.style.positionType == CSSPositionType.RELATIVE && $1.style.flex > 0\)')
.replace(/isFlexWrap\((.+?)\)/g, '\($1.style.flexWrap == CSSWrap.WRAP\)')
.replace(/getPaddingAndBorderAxis\((.+?),\s*(.+?)\)/g, '\(getLeadingPaddingAndBorder($1, $2) + getTrailingPaddingAndBorder($1, $2)\)')
.replace(/getBorderAxis\((.+?),\s*(.+?)\)/g, '\(getLeadingBorder($1, $2) + getTrailingBorder($1, $2)\)')
.replace(/getMarginAxis\((.+?),\s*(.+?)\)/g, '\(getLeadingMargin($1, $2) + getTrailingMargin($1, $2)\)')
.replace(/getLeadingPaddingAndBorder\((.+?),\s*(.+?)\)/g, '\(getLeadingPadding($1, $2) + getLeadingBorder($1, $2)\)')
.replace(/getTrailingPaddingAndBorder\((.+?),\s*(.+?)\)/g, '\(getTrailingPadding($1, $2) + getTrailingBorder($1, $2)\)')
.replace(/getDimWithMargin\((.+?),\s*(.+?)\)/g, '\($1.layout.dimensions[dim[$2]] + getLeadingMargin($1, $2) + getTrailingMargin($1, $2)\)')
.replace(/getLeadingMargin\((.+?),\s*(.+?)\)/g, '$1.style.margin.getWithFallback(leadingSpacing[$2], leading[$2])')
.replace(/getTrailingMargin\((.+?),\s*(.+?)\)/g, '$1.style.margin.getWithFallback(trailingSpacing[$2], trailing[$2])')
.replace(/getLeadingPadding\((.+?),\s*(.+?)\)/g, '$1.style.padding.getWithFallback(leadingSpacing[$2], leading[$2])')
.replace(/getTrailingPadding\((.+?),\s*(.+?)\)/g, '$1.style.padding.getWithFallback(trailingSpacing[$2], trailing[$2])')
.replace(/getLeadingBorder\((.+?),\s*(.+?)\)/g, '$1.style.border.getWithFallback(leadingSpacing[$2], leading[$2])')
.replace(/getTrailingBorder\((.+?),\s*(.+?)\)/g, '$1.style.border.getWithFallback(trailingSpacing[$2], trailing[$2])')
.replace(/isRowDirection\((.+?)\)/g, '\($1 == CSS_FLEX_DIRECTION_ROW || $1 == CSS_FLEX_DIRECTION_ROW_REVERSE\)')
.replace(/isUndefined\((.+?)\)/g, 'Float.isNaN\($1\)')
.replace(/\/\*\(c\)!([^*]+)\*\//g, '')
.replace(/var\/\*\(java\)!([^*]+)\*\//g, '$1')
.replace(/\/\*\(java\)!([^*]+)\*\//g, '$1');
}
function __transpileSingleTestToJava(code) {
return __transpileToJavaCommon(code)
.replace(/CSS_DIRECTION_/g, 'CSSDirection.')
.replace(/CSS_FLEX_DIRECTION_/g, 'CSSFlexDirection.')
.replace(/CSS_WRAP/g, 'CSSWrap.WRAP')
.replace(/new_test_css_node/g, 'new TestCSSNode')
.replace(// style.position[CSS_TOP] => style.position[CSSLayout.POSITION_TOP]
/(style|layout)\.position\[CSS_(LEFT|TOP|RIGHT|BOTTOM)\]/g,
function(str, match1, match2) {
return match1 + '.position[POSITION_' + match2 + ']';
})
.replace(// style.dimensions[CSS_WIDTH] => style.dimensions[CSSLayout.DIMENSION_WIDTH]
/(style|layout)\.dimensions\[CSS_(WIDTH|HEIGHT)\]/g,
function(str, match1, match2) {
return match1 + '.dimensions[DIMENSION_' + match2 + ']';
})
.replace(// style.maxDimensions[CSS_WIDTH] => style.maxWidth
/(style|layout)\.maxDimensions\[CSS_(WIDTH|HEIGHT)\]/g,
function(str, match1, match2) {
return match1 + '.max' + match2.substr(0, 1).toUpperCase() + match2.substr(1).toLowerCase();
})
.replace(// style.minDimensions[CSS_WIDTH] => style.minWidth
/(style|layout)\.minDimensions\[CSS_(WIDTH|HEIGHT)\]/g,
function(str, match1, match2) {
return match1 + '.min' + match2.substr(0, 1).toUpperCase() + match2.substr(1).toLowerCase();
})
.replace(// style.margin[CSS_TOP] = 12.3 => style.margin[Spacing.TOP].set(12.3)
/style\.(margin|border|padding)\[CSS_(TOP|BOTTOM|LEFT|RIGHT|START|END)\]\s+=\s+(-?[\.\d]+)/g,
function(str, match1, match2, match3) {
var propertyCap = match1.charAt(0).toUpperCase() + match1.slice(1);
return 'set' + propertyCap + '(Spacing.' + match2 + ', ' + match3 + ')';
})
.replace(// style.margin[CSS_TOP] => style.margin[Spacing.TOP]
/style\.(margin|border|padding)\[CSS_(TOP|BOTTOM|LEFT|RIGHT|START|END)\]/g,
function(str, match1, match2) {
return 'style.' + match1 + '.get(Spacing.' + match2 + ')';
})
.replace(/get_child\(.*context\,\s([^\)]+)\)/g, 'getChildAt($1)')
.replace(/init_css_node_children/g, 'addChildren')
.replace(/css_node_t(\s)\*/g, 'TestCSSNode$1')
.replace(/\->/g, '.')
.replace(/(\d+\.\d+)/g, '$1f')
.replace(// style.flex_direction => style.flexDirection
/style\.([^_\[\]\s]+)_(\w)(\w+)/g,
function(str, match1, match2, match3) {
return 'style.' + match1 + match2.toUpperCase() + match3;
})
.replace(/(\w+)\.measure\s+=\s+.+/g, '$1.setMeasureFunction(sTestMeasureFunction);');
}
function indent(code) {
return code
.split('\n')
.map(function(line) { return ' ' + line; })
.join('\n');
}
var JavaTranspiler = {
transpileLayoutEngine: function(code) {
return indent(
__transpileToJavaCommon(code)
.replace(/function\s+layoutNode.*/, '')
.replace('node.style.measure', 'node.measure')
.replace(/\.children\.length/g, '.getChildCount()')
.replace(/node.children\[i\]/g, 'node.getChildAt(i)')
.replace(/node.children\[ii\]/g, 'node.getChildAt(ii)')
.replace(/fmaxf/g, 'Math.max')
.replace(/\/\*\([^\/]+\*\/\n/g, '') // remove comments for other languages
.replace(/var\/\*([^\/]+)\*\//g, '$1')
.replace(/ === /g, ' == ')
.replace(/ !== /g, ' != ')
.replace(/\n {2}/g, '\n')
.replace(/\/[*]!([^*]+)[*]\//g, '$1')
.replace(/css_node_t\*/g, 'CSSNode'));
},
transpileCConstDefs: function(cConstDefs) {
return indent(
cConstDefs
.replace(/#define\s+(\w+)\s+(\"[^\"]+\")/g, 'public static final String $1 = $2;')
.replace(/#define\s+(\w+)\s+(.+)/g, 'public static final float $1 = $2f;'));
},
transpileCTestsArray: function(allTestsInC) {
var allTestsInJava = [];
for (var i = 0; i < allTestsInC.length; i++) {
allTestsInJava[i] =
' @Test\n' +
' public void testCase' + i + '()\n' +
__transpileSingleTestToJava(allTestsInC[i]);
}
return allTestsInJava.join('\n\n');
}
};
if (typeof module !== 'undefined') {
module.exports = JavaTranspiler;
}