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index.html
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<!DOCTYPE html>
<html lang="en-US" prefix="og: http://ogp.me/ns#">
<head>
<title></title>
<style type="text/css">
html, body {
margin: 0;
padding: 0;
font-size: 13px;
font-family: Helvetica, Arial, sans-serif;
line-height: 1;
}
table {
border-collapse: collapse;
border-spacing: none;
}
p {
margin: 0;
}
.CodeMirror {
border: 1px solid #ccc;
}
.CodeMirror .CodeMirror-activeline-background {
background-color: #ace0ff;
}
#main-editor {
width: 60%;
display: inline-block;
vertical-align: top;
}
#main-editor .CodeMirror {
}
#sidebar {
width: 36%;
display: inline-block;
font-family: Courier;
vertical-align: top;
padding: 5px;
}
#sidebar input {
background-color: transparent;
border: 0;
width: 100%;
font-family: Courier;
font-size: 13px;
}
#sidebar h2 {
background-color: #ace0ff;
color: black;
padding: 4px 10px;
}
#test {
overflow: auto;
}
#sidebar #test {
border: 1px solid #ddd;
}
#sidebar table {
width: 100%;
table-layout: auto;
}
#sidebar tbody td {
padding: 3px 0;
}
#sidebar tbody tr:nth-child(odd) td {
background-color: #eee;
}
#sidebar thead th {
text-align: left;
padding: 3px 5px;
background-color: #d2d2d2;
color: black;
border-bottom: 1px solid #9e9e9e;
}
#sidebar tr:last-child td {
border-bottom: 10px solid white;
}
#sidebar tbody td {
padding-left: 5px;
}
#sidebar tbody td:nth-child(2) {
padding-left: 10px;
white-space: nowrap;
width: 100%; /* makes sure this column takes up as much space as it can */
}
#sidebar #current-line {
position: absolute;
bottom: 0;
background-color: white;
width: 36%;
padding-bottom: 20px;
}
#sidebar .current-line-expansion {
font-size: 14px;
white-space: nowrap;
}
#sidebar .interpreted-line div {
display: inline-block;
vertical-align: top;
}
#sidebar .interpreted-line div[data] {
margin: 1px 0;
background-color: #ddd;
text-align: center;
border: 1px solid #aaa;
border-width: 0 1px;
overflow: hidden;
white-space: nowrap;
overflow: auto;
}
#sidebar .interpreted-line div[data].hover,
#sidebar .current-line span.hover
{
background-color: #8ee5ff;
}
</style>
<link href="node_modules/codemirror/lib/codemirror.css" rel="stylesheet">
<link href="node_modules/codemirror/addon/dialog/dialog.css" rel="stylesheet">
<!--
<meta name="twitter:card" content="summary" />
<meta name="twitter:site" content="@glenchsite" />
<meta name="twitter:creator" content="@glench" />
<meta property="og:type" content="article" />
<meta property="og:url" content="http://glench.com/DeepListeningAtTheRecurseCenter/" />
<meta property="og:title" content="Deep Listening at the Recurse Center" />
<meta property="og:description" content="Helping programmers become more self-directed through meditative listening." />
<meta property="og:image" content="http://glench.com/DeepListeningAtTheRecurseCenter/icon.png" />
-->
</head>
<body>
<div id="main-editor"></div>
<div id="sidebar">
<div id="test">
</div>
<!-- <table>
<thead> <tr> <th colspan="2">file</th> </tr> </thead>
<tbody>
<tr><td>const $</td><td>require('jquery');</td></tr>
<tr><td>const _</td><td>require('underscore');</td></tr>
<tr><td>const React</td><td>require('react');</td></tr>
<tr><td>const ReactDOM</td><td>require('react-dom');</td></tr>
<tr><td>const CodeMirror</td><td>require('codemirror');</td></tr>
<tr><td>const rows</td><td>300;</td></tr>
<tr><td>const columns</td><td>30;</td></tr>
<tr><td>const cell_width</td><td>88; // including borders</td></tr>
<tr><td>const cell_height</td><td>19; // including borders</td></tr>
<tr><td>clamp(3,1,2)</td><td>2</td></tr>
<tr><td>const visualizations</td><td>require('./visualizations')</td></tr>
<tr><td>const interpreter</td><td>require('./interpreter')</td></tr>
<tr><td>const Block</td><td>interpreter.Block;</td></tr>
<tr><td>const Import</td><td>interpreter.Import;</td></tr>
<tr><td>var ui_blocks: UIBlock[]</td><td>[];</td></tr>
<tr> <td>class UIBlock {</td><td>something</td></tr>
<tr><td>class Move_Drag {</td><td>something</td></tr>
<tr><td>class Resize_Drag {</td><td>something</td></tr>
<tr><td>class Resize_Code_Drag {</td><td>something</td></tr>
<tr><td>var resize_drag: ?Resize_Drag</td><td>null;</td></tr>
<tr><td>var move_drag: ?Move_Drag</td><td>null;</td></tr>
<tr><td>var resize_code_drag: ?Resize_Code_Drag</td><td>null;</td></tr>
</tbody>
<thead>
<tr>
<th colspan="2">function initialize_grid() {</th>
</tr>
</thead>
<tbody>
<tr> <td>var $main</td> <td>$('canvas#main')</td> </tr>
<tr> <td>var height</td> <td>rows*cell_height;</td> </tr>
<tr> <td>var width</td> <td>columns*cell_width;</td> </tr>
<tr> <td>var canvas</td> <td>$main.get(0)</td> </tr>
<tr> <td>var ctx</td> <td>canvas.getContext('2d');</td> </tr>
<tr> <td>row</td> <td>299</td> </tr>
<tr> <td>column</td> <td>29</td> </tr>
</tbody>
<thead>
<tr>
<th colspan="2">$('body').on('mousemove', function(evt) {</th>
</tr>
</thead>
<tbody>
<tr><td>evt</td><td>some thing</td></tr>
<tr><td>var ui_block</td><td>resize_drag.ui_block;</td></tr>
<tr><td>var dx</td><td>evt.pageX - resize_drag.x;</td></tr>
<tr><td>var dy</td><td>evt.pageY - resize_drag.y;</td></tr>
<tr><td>var new_columns</td><td>Math.floor(dx/cell_width);</td></tr>
<tr><td>var new_rows</td><td>Math.floor(dy/cell_height);</td></tr>
<tr><td>var previous_output_height</td><td>ui_block.output_height;</td></tr>
</tbody>
</table>
-->
<div id="current-line">
<h2></h2>
<div class="current-line-expansion"></div>
<div class="interpreted-line"></div>
</div>
</div>
<script src="node_modules/jquery/dist/jquery.js"></script>
<script src="node_modules/underscore/underscore.js"></script>
<script src="node_modules/codemirror/lib/codemirror.js"></script>
<script src="node_modules/codemirror/mode/javascript/javascript.js"></script>
<script src="node_modules/codemirror/addon/selection/active-line.js"></script>
<script src="node_modules/codemirror/addon/edit/matchbrackets.js"></script>
<script src="node_modules/codemirror/addon/search/searchcursor.js"></script>
<script src="node_modules/codemirror/addon/dialog/dialog.js"></script>
<script src="node_modules/codemirror/keymap/vim.js"></script>
<script src="node_modules/flow-parser/flow_parser.js" charset="utf-8"></script>
<script type="text/javascript">
const $ = require('jquery');
const fs = require('fs');
const React = require('react');
const ReactDOM = require('react-dom');
const CircularJSON = require('circular-json');
const flowRemoveTypes = require('flow-remove-types');
const { spawn, spawnSync } = require('child_process');
function evalInContext(scr, context) {
// execute script in private context
return (new Function( "with(this) { return " + scr + "}")).call(context);
}
var current_line_number = 1; // 1-based
var variable_overrides = {} // key: line number, value: {} key: name, value: line to run
var scope_values = {}; // values of all variables in different scopes returned from mock environment
class Value extends React.Component {
constructor(props) {
super(props);
this.state = {editing: false, value: value_to_string(props.value)}
this.edit = this.edit.bind(this);
this.change = this.change.bind(this);
this.blur = this.blur.bind(this);
this.keydown = this.keydown.bind(this);
}
change(evt) {
this.setState({value: evt.target.value})
}
edit(evt) {
this.setState({editing: true})
}
blur(evt) {
if (!variable_overrides[current_line_number]) {
variable_overrides[current_line_number] = {}
}
this.setState({editing: false})
variable_overrides[current_line_number][this.props.name] = evt.target.value;
run_and_render();
}
keydown(evt) {
if (evt.which == 13) {
if (!variable_overrides[current_line_number]) {
variable_overrides[current_line_number] = {}
}
this.setState({editing: false})
variable_overrides[current_line_number][this.props.name] = evt.target.value;
run_and_render();
}
}
render() {
return React.createElement('input', {
value: this.state.value,
readOnly: !this.state.editing,
onChange: this.change,
onDoubleClick: this.edit,
// onBlur: this.blur,
onKeyDown: this.keydown,
})
}
}
class ScopeTable extends React.Component {
update_height() {
setTimeout(function() {
$('#test').height($(window).height() - $('#current-line').height()-50).scrollTop(100000)
}, 300)
}
componentDidUpdate() {
this.update_height();
}
componentDidMount() {
this.update_height();
}
render() {
return React.createElement('table', null, this.props.scopes.map(scope => {
scope.names_in_scope.sort();
return [React.createElement('thead', {key: scope.name},
React.createElement('tr', null,
React.createElement('th', {colSpan: 2}, scope.name)
)
),
React.createElement('tbody', {key: scope.name+' body'},
scope.names_in_scope.map(name => {
return React.createElement('tr', {key: name}, [
React.createElement('td', {key: name+' name'}, name),
React.createElement('td', {key: name+' value'}, React.createElement(Value, {name: name, value: this.props.values[name]})),
])
})
)
]
}));
}
}
main_editor = CodeMirror(document.querySelector('#main-editor'), {
value: fs.readFileSync('/Users/glen/code/flowsheets2/src/renderer.js', 'utf-8').toString(),
mode: 'javascript',
lineNumbers: true,
styleActiveLine: true,
indentUnit: 4,
keyMap: 'vim',
matchBrackets: true,
showCursorWhenSelecting: true,
inputStyle: 'contenteditable',
});
CodeMirror.Vim.map('jj', '<Esc>', 'insert')
$('.CodeMirror').height($(window).height())
current_line_number = 177
main_editor.setCursor({line: current_line_number-1, ch: 0})
main_editor.refresh()
main_editor.on('cursorActivity', cursor_activity);
// cursor_activity(main_editor)
// set up mock environment server
// server takes requests in the form of straight-line code to run
// server returns the values in different scopes
var source = main_editor.getValue();
var ast = flow.parse(source);
var scopes = ast_to_list_of_scopes(ast, 'file', current_line_number, source, [])
var file_scope_names_to_track = scopes[0].names_in_scope;
var mock_js = `replugger_original = {};
// START of REPLUGGER ORIGINAL FILE
${flowRemoveTypes(main_editor.getValue())}
// /END OF REPLUGGER ORIGINAL FILE
// REPLUGGER RECORD VALUES AFTER RUNNING FILE
${file_scope_names_to_track.map(name => `replugger_original['${name}'] = ${name};`).join('\n')}
// END REPLUGGER RECORD VALUES AFTER RUNNING FILE
// REPLUGGER SERVER
var buffer = [];
process.stdin.setEncoding('utf-8');
const CircularJSON = require('/Users/glen/code/REPLugger/node_modules/circular-json/build/circular-json.node.js')
process.stdin.on('data', function(data) {
data = data.toString();
/*
expect things to come in in this format:
(function() {
try {
// un-nested user code
const replugger_values = {};
try { replugger_values['x'] = x; } catch(e) { replugger_values['x'] = '...'}
try { replugger_values['y'] = y; } catch(e) { replugger_values['y'] = '...'}
try { replugger_values['z'] = z; } catch(e) { replugger_values['z'] = '...'}
// line the user's cursor is on
return {error: null, values: replugger_values, current_line_subexpressions: [{src: '...', value: 42, subexpressions: []}]}
} catch(e) {
const replugger_values = {};
try { replugger_values['x'] = x; } catch(e) { replugger_values['x'] = '...'}
try { replugger_values['y'] = y; } catch(e) { replugger_values['y'] = '...'}
try { replugger_values['z'] = z; } catch(e) { replugger_values['z'] = '...'}
return {error: e, values: replugger_values, current_line_subexpressions: []}
}
}())__END__
*/
if (!data.includes('__END__')) {
buffer.push(data)
} else {
var end_of_command, start_of_next;
[end_of_command, start_of_next] = data.split('__END__'); // @Robustness: what happens when the buffer splits __END__ up, e.g. __E ND__
if (start_of_next) {
buffer = [start_of_next]
} else {
buffer.push(end_of_command);
var output = eval(buffer.join(''));
buffer = [];
process.stdout.write(CircularJSON.stringify(output, (key,value) => (typeof value === 'function' ? value.prototype : value)))
process.stdout.write('__END__')
}
}
})
// END REPLUGGER SERVER
`;
console.log(mock_js)
var mock_environment_server = spawn('node', ['--eval', mock_js], {cwd: '/Users/glen/code/flowsheets2/build/'});
mock_environment_server.stdin.setEncoding('utf-8')
mock_environment_server.stdout.setEncoding('utf-8')
var buffer = [];
mock_environment_server.stdout.on('data', function(data) {
data = data.toString();
if (data.includes('__END__')) {
buffer.push(data.split('__END__')[0])
console.log('BUFFER DATA!!!!!!!!!!', buffer)
var data = CircularJSON.parse(buffer.join(''))
buffer = []
console.log('output from js mock server:', data);
ReactDOM.render(React.createElement(ScopeTable, {scopes: scopes, values: data.values}), document.querySelector('#test'))
} else {
buffer.push(data)
}
})
mock_environment_server.stderr.on('data', function(data) { console.log('error in mock environment:', data.toString())})
mock_environment_server.on('exit', function() { console.log('mock environment process ended!')})
process.on('exit', function() { mock_environment_server.kill('SIGKILL') });
window.onbeforeunload = function (e) {
mock_environment_server.kill('SIGKILL');
};
function test_mock_server() {
var test = `
(function() {
try {
const underscore = require('underscore');
var dx = underscore.find([1,2,3,4], x => x % 2 == 0)
var y = [2,1,3]
y.sort();
var replugger_values = {};
try { replugger_values['underscore'] = underscore; } catch(e) { replugger_values['underscore'] = '...'}
try { replugger_values['dx'] = dx; } catch(e) { replugger_values['dx'] = '...'}
try { replugger_values['y'] = y; } catch(e) { replugger_values['y'] = '...'}
return {error: null, values: replugger_values, current_line_subexpressions: []}
} catch(e) {
var replugger_values = {};
try { replugger_values['underscore'] = underscore; } catch(e) { replugger_values['underscore'] = '...'}
try { replugger_values['x'] = x; } catch(e) { replugger_values['x'] = '...'}
try { replugger_values['y'] = y; } catch(e) { replugger_values['y'] = '...'}
return {error: e, values: replugger_values, current_line_subexpressions: []}
}
}())__END__`;
mock_environment_server.stdin.write(test)
}
function run_and_render() {
console.time('parse')
const source = main_editor.getValue();
const ast_before_current_line = flow.parse(source.split('\n').slice(0, current_line_number).join('\n'));
console.log('ast up to current line', ast_before_current_line)
const scopes = ast_to_list_of_scopes(ast_before_current_line, 'file', current_line_number, source, [])
var mock_js = ast_node_to_js(ast_before_current_line, scopes);
console.timeEnd('parse')
// console.log(mock_js)
console.time('subprocess')
var sub_process = spawnSync('node', ['--eval', mock_js], {cwd: '/Users/glen/code/flowsheets2/build/'})
console.timeEnd('subprocess')
var err = sub_process.stdout.toString();
if (err) {
var error_line_number = parseInt(err.split('\n')[1].split(':')[1], 10)
$('.current-line-expansion').html(`<pre>Error on this line: ${mock_js.split('\n')[error_line_number-1]}
${err}</pre>`)
console.log(`Error on this line: ${mock_js.split('\n')[error_line_number-1]}
${err}`)
}
console.log('error running script:', sub_process.stderr.toString())
// if (sub_process.stdout.toString() !== 'ok') {
// console.log(sub_process.stderr.toString())
// }
var values = CircularJSON.parse(fs.readFileSync('tmp.js').toString())
scope_values = values;
ReactDOM.render(React.createElement(ScopeTable, {scopes: scopes, values: values}), document.querySelector('#test'))
}
function cursor_activity(instance) {
// don't change sidebar if user is highlighting
if (instance.getSelection()) {
return;
}
var line_number = instance.getCursor().line+1;
$('#sidebar #current-line h2').text('Line '+(line_number))
// line change
if (line_number !== current_line_number) {
current_line_number = line_number;
}
{ // send straight-line code to server
let source = instance.getValue();
let ast = flow.parse(source)
let scopes = ast_to_list_of_scopes(ast, 'file', current_line_number, source, []).slice(1)
let cursor_in_node = _.find(ast.body, node => node.loc.start.line <= current_line_number && node.loc.end.line >= current_line_number);
let straight_js = ast_node_to_js(cursor_in_node, scopes)
let mock_js = `(function () {
try ${straight_js}
catch (e) {
replugger_values = {};
${scopes.map(scope => { return scope.names_in_scope.map(name => `try { replugger_values['${name}'] = ${name} } catch(e) { replugger_values['${name}'] = '...' }`).join('\n')}).join('\n')}
return {error: e, values: replugger_values, current_line_subexpressions: []}
}
}())__END__`;
mock_environment_server.stdin.write(mock_js)
}
return
{ // show the values of the current line
var current_line_src = instance.getLine(current_line_number-1);
var current_line_ast = flow.parse(current_line_src);
console.log("current line's ast:", current_line_ast)
if (current_line_ast.body.length > 0 && current_line_ast.errors.length == 0) {
var html_ast = ast_to_html(current_line_ast.body[0])
} else {
var html_ast = current_line_src;
}
// write html to page
$('#sidebar .current-line-expansion').html('<div class="current-line">'+html_ast+'</div>')
if (current_line_ast.body.length > 0) {
$('.interpreted-line').html(evaluate_html_ast(document.querySelector('.current-line span'), scope_values))
} else {
$('.interpreted-line').html('');
}
$('.interpreted-line div').filter(function(i, el ) {
return el.innerText == '...'
}).css('opacity', 0)
// mouseover behavior
$('.interpreted-line div[data]').on('mouseenter', function(evt) {
var $target = $(evt.target);
if ($target.css('opacity') !== '0') {
$target.addClass('hover')
var $subexpression = $('.current-line span').filter(function(i, el) {
return $(el).text() == $target.attr('data')
})
$subexpression.addClass('hover')
}
}).on('mouseleave', function(evt) {
var $target = $(evt.target);
$target.removeClass('hover')
var $subexpression = $('.current-line span').filter(function(i, el) {
return $(el).text() == $target.attr('data')
})
$subexpression.removeClass('hover')
})
$('.current-line span').on('mouseenter', function(evt) {
evt.stopPropagation();
var $target = $(evt.target);
$target.addClass('hover');
$('.interpreted-line div[data="'+ $target.text() +'"]').addClass('hover')
}).on('mouseleave', function(evt) {
var $target = $(evt.target);
$target.removeClass('hover');
$('.interpreted-line div[data="'+ $target.text() +'"]').removeClass('hover')
})
}
}
function ast_to_list_of_scopes(node, scope_name, current_line_number, src, output) {
// produce a list of scopes with variable names in each scope:
// [
// {name: 'file': names_in_scope: ['module', 'clamp']},
// {name: 'function initialize_grid() {', names_in_scope: ['width', 'height']}]
// ]
var scope = {name: scope_name, names_in_scope: []}
var nodes = null;
if (node.type == 'Program') {
scope.names_in_scope.push('module')
nodes = node.body;
} else if (node.type == 'FunctionDeclaration' || node.type == 'FunctionExpression') {
node.params.forEach(param => scope.names_in_scope.push(param.name))
nodes = node.body.body;
} else if (node.type == 'BlockStatement') {
nodes = node.body;
} else if (node.type == 'CallExpression') {
nodes = node.arguments; //node.arguments[node.arguments.length-1].body;
} else if (node.type == 'IfStatement') {
nodes = node.consequent.body;
}
if (!nodes) return output;
// find declarations
nodes = nodes.filter(decl => decl.loc.start.line <= current_line_number);
nodes.forEach(decl => {
switch (decl.type) {
case 'VariableDeclaration':
decl.declarations.forEach(inner_decl => {
scope.names_in_scope.push(inner_decl.id.name)
})
return;
// case 'ExpressionStatement':
// return;
case 'ClassDeclaration':
scope.names_in_scope.push(decl.id.name);
return;
case 'FunctionDeclaration':
case 'FunctionExpression':
if (decl.id) {
scope.names_in_scope.push(decl.id.name)
}
return;
}
})
if (scope.names_in_scope.length > 0) {
output.push(scope);
}
const last_node = nodes[nodes.length-1];
if (!last_node) return output;
if (last_node.loc.start.line == current_line_number && last_node.loc.end.line == current_line_number) {
return output;
}
var current_line_src = src.split('\n')[last_node.loc.start.line-1];
if (last_node.type == 'FunctionDeclaration' || last_node.type == 'FunctionExpression') {
ast_to_list_of_scopes(last_node, current_line_src, current_line_number, src, output);
} else if (last_node.type == 'ExpressionStatement') {
ast_to_list_of_scopes(last_node.expression, current_line_src, current_line_number, src, output);
} else if (last_node.type == 'CallExpression') {
ast_to_list_of_scopes(last_node.arguments[last_node.arguments.length-1], current_line_src, current_line_number, src, output);
} else if (last_node.type == 'IfStatement') {
// find which branch of the if statement contains the current line
var test_node = last_node;
while (test_node.type == 'IfStatement') {
if (test_node.consequent.loc.start.line <= current_line_number && test_node.consequent.loc.end.line >= current_line_number) {
break
}
test_node = test_node.alternate;
}
ast_to_list_of_scopes(test_node, src.split('\n')[test_node.loc.start.line-1], current_line_number, src, output);
} else if (last_node.type == 'FunctionExpression') {
ast_to_list_of_scopes(last_node.body, current_line_src, current_line_number, src, output);
} else if (last_node.type == 'BlockStatement') {
ast_to_list_of_scopes(last_node.body, current_line_src, current_line_number, src, output);
} else {
// console.log('error-causing node:', last_node)
// throw 'unhandled AST node type: '+last_node.type;
}
return output;
}
function ast_to_html(node) {
switch (node.type) {
case 'IfStatement':
return '<span><span class="spacer">if (</span>'+ast_to_html(node.test)+') {</span>'
case 'BinaryExpression':
return '<span>' + ast_to_html(node.left) + ' <span> ' + node.operator + ' </span> ' + ast_to_html(node.right) + '</span>';
case 'Identifier':
return '<span>'+node.name+'</span>'
case 'Literal':
return `<span>${node.raw}</span>`;
case 'LabeledStatement':
return '<span>'+ node.label.name +': '+ ast_to_html(node.body) +'</span>'
case 'VariableDeclaration':
var type_str = '';
if (node.declarations[0].id.typeAnnotation) {
var range = node.declarations[0].id.typeAnnotation.typeAnnotation.range;
type_str = ': '+current_line.slice(range[0], range[1])
}
return `<span><span class="spacer">${node.kind} ${node.declarations[0].id.name}${type_str} = </span>${ast_to_html(node.declarations[0].init)}</span>`
case 'ExpressionStatement':
return '<span>'+ ast_to_html(node.expression) +'</span>'
case 'AssignmentExpression':
return '<span><span>'+ ast_to_html(node.left) +' '+ node.operator +'</span> '+ ast_to_html(node.right) +'</span>'
case 'MemberExpression':
return `<span><span>${node.object.name || node.object.raw || 'this'}</span>.${node.property.name}</span>`
case 'CallExpression':
return `<span><span>${ast_to_html(node.callee)}(</span>${node.arguments.map(arg_node => ast_to_html(arg_node)).join('<span>, </span>')})</span>`
case 'ThisExpression':
return `<span>this</span>`;
default:
return 'DEFAULT UH OH'
}
}
function value_to_string(value) {
if (_.isFunction(value)) {
return value;
}
if (_.isNull(value)) {
return 'null';
}
if (_.isUndefined(value)) {
return '...'
}
if (_.isObject(value)) {
var str = '{'
_.each(value, (val, key) => {
str += `${key}: ${val},`
})
str +=' }'
return str
} else if (_.isString(value)) {
return `"${value}"`;
}
return value
}
function output_html(text, width, scope) {
try {
return '<div data="'+ text +'" style="width: '+ (width-2) +'px;">'+value_to_string(evalInContext(text, scope))+'</div>';
} catch(e) {
return '<div data="'+ text +'" style="width: '+ (width-2) +'px;" class="spacer">...</div>'
}
}
function evaluate_html_ast(node, scope) {
// evaluates each section of a js expression with span tags around it
if (node.children.length == 0) {
return output_html(node.innerText, $(node).width(), scope)
}
var output = '<div style="width: '+ ($(node).width()) +'px;">\n';
output += output_html($(node).text(), $(node).width(), scope)
output += '<div class="children" style="width: '+ ($(node).width()) +'px;">'
for (var i = 0; i < node.children.length; ++i) {
var child = node.children[i];
output += evaluate_html_ast(child, scope)
}
output += '</div></div>\n'
return output;
}
function ast_node_to_js(node, scopes) {
if (!node.type) { // array of nodes
var nodes = node;
var output = '';
var done = false;
nodes.forEach(node => {
if (done) { return; }
if (scopes && node.loc.end.line == current_line_number && node.loc.start.line == current_line_number) {
output += `replugger_values = {};\n${scopes.map(scope => { return scope.names_in_scope.map(name => `try { replugger_values['${name}'] = ${name} } catch(e) { replugger_values['${name}'] = '...' }`).join('\n')}).join('\n')}\n${ast_node_to_js(node, scopes)}`
done = true;
return
}
output += ast_node_to_js(node, scopes)+'\n'
})
return output;
}
switch (node.type) {
case 'Program':
return `try {
${ast_node_to_js(node.body, scopes)}
} catch (e) {
replugger_values = {};
${scopes.map(scope => { return scope.names_in_scope.map(name => `try { replugger_values['${name}'] = ${name} } catch(e) { replugger_values['${name}'] = '...' }`).join('\n')}).join('\n')}
}
`
case 'ExpressionStatement':
if (node.loc.start.line < current_line_number && node.loc.end.line >= current_line_number) {
var test_node = node.expression;
// find the part of this expression that the cursor is in
while (test_node.type == 'CallExpression') {
test_node = test_node.arguments[test_node.arguments.length-1];
}
return `// function as argument
${ast_node_to_js(test_node, scopes)}`
}
return ast_node_to_js(node.expression, scopes);
case 'ClassDeclaration':
return `class ${ast_node_to_js(node.id, scopes)} ${ast_node_to_js(node.body, scopes)}`;
case 'ClassProperty':
return ``;
case 'MethodDefinition':
return `${ast_node_to_js(node.key, scopes)}(${node.value.params.map(param => param.name).join(', ')}) ${ast_node_to_js(node.value.body, scopes)}`;
case 'ClassBody':
case 'BlockStatement':
return `{
${ast_node_to_js(node.body, scopes)}
}`
case 'VariableDeclaration':
var output = ''
node.declarations.forEach((decl,i) => {
output += ast_node_to_js(decl, scopes);
if (i !== node.declarations.length-1) {
output += ',\n'
} else {
output += ';'
}
});
return output;
case 'IfStatement':
if (node.loc.start.line <= current_line_number && node.loc.end.line >= current_line_number) {
// find which branch the cursor is in
var test_node = node;
while (test_node.type == 'IfStatement') {
if (test_node.consequent.loc.start.line <= current_line_number && test_node.consequent.loc.end.line >= current_line_number) {
break
}
test_node = test_node.alternate;
}
return `// if ${ast_node_to_js(test_node.test, scopes)}
${ast_node_to_js(test_node.consequent.body, scopes)}
`
}
var else_clause = '';
if (node.alternate) {
else_clause = `else ${ast_node_to_js(node.alternate, scopes)}`
}
return `if (${ast_node_to_js(node.test, scopes)}) ${ast_node_to_js(node.consequent, scopes)} ${else_clause}`;
case 'ConditionalExpression':
return `${ast_node_to_js(node.test, scopes)} ? ${ast_node_to_js(node.consequent, scopes)} : ${ast_node_to_js(node.alternate, scopes)}`
case 'AssignmentExpression':
return `${ast_node_to_js(node.left, scopes)} ${node.operator} ${ast_node_to_js(node.right, scopes)}`;
case 'MemberExpression':
if (node.computed) {
return `${ast_node_to_js(node.object, scopes)}[${ast_node_to_js(node.property, scopes)}]`
} else {
return `${ast_node_to_js(node.object, scopes)}.${ast_node_to_js(node.property, scopes)}`
}
case 'VariableDeclarator':
if (variable_overrides[current_line_number] && node.id.name in variable_overrides[current_line_number]) {
return `var ${node.id.name} = ${variable_overrides[current_line_number][node.id.name]}`;
}
return `var ${node.id.name} = ${ast_node_to_js(node.init, scopes)}`;
case 'NewExpression':
var arguments_str = '';
node.arguments.forEach((arg,i) => {
arguments_str += ast_node_to_js(arg, scopes)+ (i == node.arguments.length-1 ? '' : ', ');
})
return `new ${ast_node_to_js(node.callee, scopes)}(${arguments_str})`;
case 'CallExpression':
var arguments_str = '';
node.arguments.forEach((arg,i) => {
arguments_str += ast_node_to_js(arg, scopes)+ (i == node.arguments.length-1 ? '' : ', ');
})
return `${ast_node_to_js(node.callee, scopes)}(${arguments_str})`;
case 'FunctionExpression':
if (node.loc.start.line <= current_line_number && node.loc.end.line >= current_line_number) {
return `{
${node.params.map(param => `var ${param.name} = ${variable_overrides[current_line_number] ? variable_overrides[current_line_number][param.name] : 'null'};`).join('\n')}
${ast_node_to_js(node.body, scopes)}
}`
} else {
var params_str = '';
node.params.forEach((param,i) => {
params_str += ast_node_to_js(param, scopes)+ (i == node.params.length-1 ? '' : ', ');
})
return `${node.async ? 'async ':''} function(${params_str}) ${ast_node_to_js(node.body, scopes)}`;
}
case 'FunctionDeclaration':
if (node.loc.start.line <= current_line_number && node.loc.end.line >= current_line_number) {
return `{ // function ${ast_node_to_js(node.id, scopes)}
${node.params.map(param => `var ${param.name} = null;`).join('\n')}
${ast_node_to_js(node.body, scopes)}
}`
} else {
var params_str = '';
node.params.forEach((param,i) => {
params_str += ast_node_to_js(param, scopes)+ (i == node.params.length-1 ? '' : ', ');
})
return `${node.async ? 'async ':''}function ${ast_node_to_js(node.id, scopes)}(${params_str}) ${ast_node_to_js(node.body, scopes)}`;
}
case 'ArrowFunctionExpression':
return `(${node.params.map(param => ast_node_to_js(param, scopes)).join(', ')}) => ${ast_node_to_js(node.body, scopes)}`
case 'ForStatement':
return `for (${ast_node_to_js(node.init, scopes)} ${ast_node_to_js(node.test, scopes)}; ${ast_node_to_js(node.update, scopes)}) ${ast_node_to_js(node.body, scopes)}`
case 'ReturnStatement':
return `return ${node.argument ? ast_node_to_js(node.argument, scopes) : ''};`
case 'UnaryExpression':
return `${node.operator} ${ast_node_to_js(node.argument, scopes)}`
case 'BinaryExpression':
case 'LogicalExpression':
return `${ast_node_to_js(node.left, scopes)} ${node.operator} ${ast_node_to_js(node.right, scopes)}`;
case 'UpdateExpression':
if (node.prefix) {
return `${node.operator}${ast_node_to_js(node.argument, scopes)}`;
}
return `${ast_node_to_js(node.argument, scopes)}${node.operator}`;
case 'TryStatement':
return `try ${ast_node_to_js(node.block, scopes)} ${ast_node_to_js(node.handler, scopes)}`
case 'CatchClause':
return `catch(${node.param.name || ''}) ${ast_node_to_js(node.body, scopes)}`
case 'ArrayExpression':
var output = '';
node.elements.forEach(element => {
output += ast_node_to_js(element, scopes);
if (i !== node.declarations.length-1) {
output += ' ,\n'
}
})
return `[${output}]`
case 'ObjectExpression':
return `{${node.properties.map(prop => ast_node_to_js(prop, scopes))}}`
case 'Property':
return `${ast_node_to_js(node.key, scopes)}: ${ast_node_to_js(node.value, scopes)}`
case 'Identifier':
return node.name;
case 'ThisExpression':
return 'this';
case 'TemplateLiteral':
return '`'+ ast_node_to_js(node.quasis, scopes) + '`'
case 'TemplateElement':
return node.value.raw;
case 'Literal':
return node.raw;
case 'EmptyStatement':
return ''
default:
console.log(node)
return '!!!UH OH!!!'
}
}
/*
Strategy for setting up example environment:
find all declarations (class, function, params, variable) before the cursor / inspection point and run them.
anything that isn't a computed value, make up a value? e.g. 'function(evt) {', want to account for evt object.
run file scope ->
run next scope ->
run next scope
things to consider:
if statement (can try to automatically make the condition true)
for loop
while loop
case statement
recursion
class declaration should call constructor
function, need to create sample arguments
replugger(), a function that saves running state and loads it in the sidebar
how to handle i/o (writing to disk, network requests)
An interesting scenario to consider:
I want to scrape all the pages from the texas death row site. I want all 500 requests in memory to do computations on them.
*/
</script>
</body>
</html>