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generate.js
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generate.js
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var fs = require('fs');
var idl = fs.readFileSync(__dirname + '/webgl.idl').toString();
var t_h = fs.readFileSync(__dirname + '/templates/file.h').toString();
var t_cc = fs.readFileSync(__dirname + '/templates/file.cc').toString();
var currentProperties = [];
var current = '';
var h = '';
var cc = '';
var queue = '';
var files = {};
var includes = [];
var skip = [
'void', 'void*', 'bool', 'int', 'float', 'long',
'double', 'long', 'GLfloat', 'GLenum', 'GLboolean', 'GLint',
'GLsizeiptr', 'GLclampf', 'GLsizei', 'GLuint', 'GLbitfield',
'GLintptr', 'GLclampf', 'GLboolean'
];
idl = idl.replace(/readonly attribute/g, 'readonly');
idl = idl.replace(/attribute boolean/g, 'bool');
idl = idl.replace(/ boolean/g, ' bool');
idl = idl.replace(/\[[ ]*\]/g, '\*\*');
idl = idl.replace(/sequence<(.*)>/g, '$1\*\*');
function addInclude(file, addLine) {
file = file.replace(/\*/g, '');
var include = '#include "' + file + '.h"';
if (file && includes.indexOf(include) < 0 && skip.indexOf(file) === -1) {
includes.push(include);
if (addLine !== false && !files[file]) {
lines.push('interface ' + file + ' {');
lines.push(' ');
lines.push('};');
files[file] = true;
}
}
}
function addPointer(type, value) {
value = value || '';
// Add a pointer if needed
if (type.indexOf('*') < 0 && skip.indexOf(type) < 0) {
return '*' + value;
}
return value;
}
var lines = idl.split('\n');
var line;
var i = 0;
while(1) {
i++;
if (i >= lines.length) {
break;
}
var line = lines[i];
line = line.replace(/any/, 'void* ');
line = line.replace(/object/, 'void* ');
// Handle interfaces
if (line.indexOf('interface') > -1) {
var match = line.match(/interface +(.*) +\{/);
var nameParts = match[1].split(' : ');
var name, parent = '', parentClass = '', parentInclude = '';
if (nameParts.length === 2) {
parent = nameParts.pop();
parentClass = ' : ' + parent;
addInclude(parent);
}
name = current = nameParts.pop().replace(/^\W*|\W*$/g,'');
files[name] = true;
h = t_h.replace(/%FILE%/g, name);
h = h.replace(/%PARENT_CLASS%/, parentClass);
cc = t_cc.replace(/%FILE%/g, name);
cc += name + '::' + name + '() {\n \n}\n\n';
cc += name + '::~' + name + '() {\n \n}\n\n';
currentProperties = [
];
// Handle the end of an interface
} else if (line.indexOf('};') > -1) {
if (current === '') {
continue;
}
if (currentProperties.length > 0) {
var h_props = [];
currentProperties.forEach(function(prop) {
// only function calls
if (prop.indexOf('(') > -1) {
var propParts = prop.replace(/^ +/, '').split(' ');
if (propParts.length > 2) {
//propParts[2] = current + '::' + propParts[2];
prop = propParts.join(' ').replace(';', ' {');
// calculate extra includes
var matches = prop.match(/^(.+) (.*)\((.*)\)/i);
if (matches && matches.length === 4) {
addInclude(matches[1]);
var args = [];
matches[3].split(', ').forEach(function(arg) {
arg = arg.replace(/sequence<(.*)>/, '$1\*');
arg = arg.replace(/^boolean$/, 'bool');
var argParts = arg.split(' ');
var type = argParts[0];
argParts[1] = addPointer(type, argParts[1]);
var arg = argParts.join(' ');
args.push(arg);
addInclude(type);
});
h_props.push(' ' + matches[1] + addPointer(matches[1], ' ') + matches[2] + '(' + args.join(', ') + ');');
cc += matches[1] + addPointer(matches[1], ' ') + current + '::' + matches[2] + '(' + args.join(', ') + ') {\n \n}\n\n';
} else {
console.log('miss', prop, matches);
}
}
if (propParts.length === 2) {
addInclude(propParts[0]);
cc += propParts[0] + addPointer(propParts[0], ' ') + current + '::' + propParts[1].replace(';', ' {\n \n}\n\n') + '\n';
h_props.push(' ' + propParts[0] + addPointer(propParts[0], ' ') + propParts[1]);
}
} else {
// split off = and add instance to .cc
var matches = prop.match(/(.*) (.*) = (.*)$/i);
if (matches) {
matches[1] = matches[1].replace('const', 'static const');
h_props.push(matches[1] + ' ' + matches[2] + ' = ' + matches[3] + ';');
} else {
attributeMatch = prop.match(/readonly (.*) (.*);/);
if (attributeMatch) {
addInclude(attributeMatch[1]);
var titleCase = attributeMatch[2].substring(0,1).toUpperCase() + attributeMatch[2].substring(1);
prop = attributeMatch[1] + ' get' + titleCase + '();'
cc += attributeMatch[1] + ' ' + current + '::get' + titleCase + '() {\n \n}\n\n';
}
h_props.push(' ' + prop.replace(/^\W*/, ''));
}
}
});
h = h.replace(/%PUBLIC%/, '\n public:\n' + h_props.join('\n') + '\n');
}
h = h.replace(/%PARENT_INCLUDE%/, includes.join('\n') + '\n');
h = h.replace(/%PUBLIC%/, '\n public:\n');
includes = [];
fs.writeFileSync(__dirname + '/../src/' + current + '.h', h);
fs.writeFileSync(__dirname + '/../src/' + current + '.cc', cc);
current = '';
currentProperties = [];
h = '';
cc = '';
} else if (line.indexOf(';') > -1) {
queue += line;
queue = queue.split('\n').join('');
currentProperties.push(' ' + queue.replace(/ +/g,' '));
queue = '';
} else if (line.match(/(, )|,$/)) {
queue += line;
} else if (queue !== '') {
queue += line.replace(/ +/g,' ');
}
};