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index.html
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<html>
<body>
<head><title>Seymour-Lib</title></head>
<script src="Env.js"></script>
<script src="EventRecorder.js"></script>
<script src="MicroVizEvents.js"></script>
<script src="SourceLoc.js"></script>
<script src="events.js"></script>
<script src="lib.js"></script>
<script src="macroViz.js"></script>
<script src="microViz.js"></script>
<script src="prog.js"></script>
<script src="renderModel.js"></script>
<link rel="stylesheet" type="text/css" href="style.css" >
<div id="exampleButtons"></div>
<div id="microVizDivContainer">
<div id="microVizDiv"></div>
</div>
<div id="macroVizDivContainer">
<div id="macroVizDiv"></div>
</div>
<script>
const examples = {};
function addExample(name, setupFn) {
const button = exampleButtons.appendChild(document.createElement('a'));
button.classList.add('exampleButton');
button.appendChild(document.createTextNode(name));
button.setAttribute('href', '?' + name);
examples[name] = () => {
button.classList.add('selected');
setupFn();
};
}
let globalEnv;
addExample('seymour-for', () => {
prog({name: 'program', code: [
{name: 'forDef', code: [
'def for ', {name: 'thisDecl', code: 'Number'}, ' ',
'to: ', {name: 'endDecl', code: 'end'}, ' ',
'do: ', {name: 'bodyDecl', code: 'body'}, ' {\n',
' ...\n',
{name: 'theLoop', code: [
' ', {name: 'bodyCall', code: 'body(idx)'}, ';']}, '\n',
' ...\n',
'}'
]},
'\n\n',
{name: 'gDecl', code: 'var g = 0;'}, '\n',
{name: 'fDef', code: [
'def f() {\n',
' ', {name: 'gAssignment', code: 'g = g + 1'}, ';\n',
'}'
]},
'\n\n',
{name: 'sumDecl', code: 'var sum = 0;'}, '\n',
{name: 'forCall', code: [
'for 1 to: 3 do: ', {name: 'forBody', code: [
'{', {name: 'xDecl', code: 'x'}, ' |\n',
' ', {name: 'sumAssignment', code: 'sum = sum + x;'}, '\n',
' ', {name: 'fCall', code: 'f()'}, ';\n',
'}'
]}
]},
';'
]});
const R = new EventRecorder();
globalEnv = R.program(sls.program);
function _for(start, end, body) {
const forEnv = R.mkEnv(sls.forDef);
R.declVar(sls.thisDecl, forEnv, 'this', start);
R.declVar(sls.endDecl, forEnv, 'end', end);
R.declVar(sls.bodyDecl, forEnv, 'body', body);
const loopEnv = R.enterScope(sls.theLoop, forEnv);
for (let idx = start; idx <= end; idx++) {
(R.send(sls.bodyCall, loopEnv, body, 'call', [idx]), R.receive(body(idx)));
}
R.leaveScope();
}
let g = R.declVar(sls.gDecl, globalEnv, 'g', 0);
function f() {
const fEnv = R.mkEnv(sls.fDef);
g = R.assignVar(sls.gAssignment, fEnv, globalEnv, 'g', g + 1);
}
let sum = R.declVar(sls.sumDecl, globalEnv, 'sum', 0);
const forBody = x => {
const forBodyEnv = R.mkEnv(sls.forBody);
R.declVar(sls.xDecl, forBodyEnv, 'x', x);
sum = R.assignVar(sls.sumAssignment, forBodyEnv, globalEnv, 'sum', sum + x);
(R.send(sls.fCall, forBodyEnv, f, 'call', []), R.receive(f()));
};
(R.send(sls.forCall, globalEnv, 1, 'for_to:do:', [3, forBody]), R.receive(_for(1, 3, forBody)));
});
addExample('seymour-myFor', () => {
prog({name: 'program', code: [
{name: 'enterDecl', code: 'var enter = 0;'}, '\n',
{name: 'leaveDecl', code: 'var leave = 0;'}, '\n',
{name: 'forDef', code: [
'def for ', {name: 'thisDecl', code: 'Number'}, ' ',
'to: ', {name: 'endDecl', code: 'end'}, ' ',
'do: ', {name: 'bodyDecl', code: 'body'}, ' {\n',
' ...\n',
{name: 'theLoop', code: [
' ', {name: 'enterAssignment', code: 'enter = enter + 1;'}, '\n',
' ', {name: 'bodyCall', code: 'body(idx)'}, ';\n',
' ', {name: 'leaveAssignment', code: 'leave = leave + 1;'}]}, '\n',
' ...\n',
'}'
]},
'\n\n',
{name: 'gDecl', code: 'var g = 0;'}, '\n',
{name: 'fDef', code: [
'def f() {\n',
' ', {name: 'gAssignment', code: 'g = g + 1'}, ';\n',
'}'
]},
'\n\n',
{name: 'sumDecl', code: 'var sum = 0;'}, '\n',
{name: 'forCall', code: [
'for 1 to: 3 do: ', {name: 'forBody', code: [
'{', {name: 'xDecl', code: 'x'}, ' |\n',
' ', {name: 'sumAssignment', code: 'sum = sum + x;'}, '\n',
' ', {name: 'fCall', code: 'f()'}, ';\n',
'}'
]}
]},
';'
]});
const R = new EventRecorder();
globalEnv = R.program(sls.program);
let enter = R.declVar(sls.enterDecl, globalEnv, 'enter', 0);
let leave = R.declVar(sls.leaveDecl, globalEnv, 'leave', 0);
function _for(start, end, body) {
const forEnv = R.mkEnv(sls.forDef);
R.declVar(sls.thisDecl, forEnv, 'this', start);
R.declVar(sls.endDecl, forEnv, 'end', end);
R.declVar(sls.bodyDecl, forEnv, 'body', body);
const loopEnv = R.enterScope(sls.theLoop, forEnv);
for (let idx = start; idx <= end; idx++) {
enter = R.assignVar(sls.enterAssignment, loopEnv, globalEnv, 'enter', enter + 1);
(R.send(sls.bodyCall, loopEnv, body, 'call', [idx]), R.receive(body(idx)));
leave = R.assignVar(sls.leaveAssignment, loopEnv, globalEnv, 'leave', leave + 1);
}
R.leaveScope();
}
let g = R.declVar(sls.gDecl, globalEnv, 'g', 0);
function f() {
const fEnv = R.mkEnv(sls.fDef);
g = R.assignVar(sls.gAssignment, fEnv, globalEnv, 'g', g + 1);
}
let sum = R.declVar(sls.sumDecl, globalEnv, 'sum', 0);
const forBody = x => {
const forBodyEnv = R.mkEnv(sls.forBody);
R.declVar(sls.xDecl, forBodyEnv, 'x', x);
sum = R.assignVar(sls.sumAssignment, forBodyEnv, globalEnv, 'sum', sum + x);
(R.send(sls.fCall, forBodyEnv, f, 'call', []), R.receive(f()));
};
(R.send(sls.forCall, globalEnv, 1, 'for_to:do:', [3, forBody]), R.receive(_for(1, 3, forBody)));
});
addExample('seymour-nestedLoops', () => {
prog({name: 'program', code: [
{name: 'forDef', code: [
'def for ', {name: 'thisDecl', code: 'Number'}, ' ',
'to: ', {name: 'endDecl', code: 'end'}, ' ',
'do: ', {name: 'bodyDecl', code: 'body'}, ' {\n',
' ...\n',
{name: 'theLoop', code: [
' ', {name: 'bodyCall', code: 'body(idx)'}, ';']}, '\n',
' ...\n',
'}']}, '\n\n',
{name: 'countDecl', code: 'var count = 0;'}, '\n',
{name: 'for1Call', code: [
'for 1 to: 3 do: ', {name: 'for1Body', code: ['{', {name: 'xDecl', code: 'x'}, ' |\n',
' ', {name: 'for2Call', code: ['for 1 to: 3 do: ', {name: 'for2Body', code: ['{', {name: 'yDecl', code: 'y'}, ' |\n',
' ', {name: 'countAssignment', code: 'count = count + 1;'}, '\n',
' }']}]}, ';\n',
'}']}]}, ';']});
const R = new EventRecorder();
globalEnv = R.program(sls.program);
function _for(start, end, body) {
const forEnv = R.mkEnv(sls.forDef);
R.declVar(sls.thisDecl, forEnv, 'this', start);
R.declVar(sls.endDecl, forEnv, 'end', end);
R.declVar(sls.bodyDecl, forEnv, 'body', body);
const loopEnv = R.enterScope(sls.theLoop, forEnv);
for (let idx = start; idx <= end; idx++) {
(R.send(sls.bodyCall, loopEnv, body, 'call', [idx]), R.receive(body(idx)));
}
R.leaveScope();
}
let count = R.declVar(sls.countDecl, globalEnv, 'count', 0);
const for1Body = x => {
const for1BodyEnv = R.mkEnv(sls.for1Body);
const for2Body = y => {
const for2BodyEnv = R.mkEnv(sls.for2Body);
R.declVar(sls.yDecl, for2BodyEnv, 'y', y);
count = R.assignVar(sls.countAssignment, for2BodyEnv, globalEnv, 'count', count + 1);
};
R.declVar(sls.xDecl, for1BodyEnv, 'x', x);
(R.send(sls.for2Call, for1BodyEnv, 1, 'for_to:do:', [3, for2Body]), R.receive(_for(1, 3, for2Body)));
};
(R.send(sls.for1Call, globalEnv, 1, 'for_to:do:', [3, for1Body]), R.receive(_for(1, 3, for1Body)));
});
addExample('seymour-preEvents', () => {
prog({name: 'program', code: [
{name: 'forDef', code: [
'def for ', {name: 'thisDecl', code: 'Number'}, ' ',
'to: ', {name: 'endDecl', code: 'end'}, ' ',
'do: ', {name: 'bodyDecl', code: 'body'}, ' {\n',
' ...\n', {name: 'theLoop', code: [
' ', {name: 'bodyCall', code: 'body(idx)'}, ';']}, '\n',
' ...\n',
'}'
]},
'\n\n',
{name: 'gDecl', code: 'var g = 0;'}, '\n',
{name: 'fDef', code: [
'def f() {\n',
' ', {name: 'gAssignment', code: 'g = g + 1;'}, '\n',
' ', {name: 'fReturn', code: 'return g;'}, '\n',
'}'
]},
'\n\n',
{name: 'sumDecl', code: 'var sum = 0;'}, '\n',
{name: 'forCall', code: [
'for ', {name: 'fCall1', code: 'f()'}, '\n',
'to: ', {name: 'fCall2', code: 'f()'}, ' + 1\n',
'do: ', {name: 'forBody', code: [
'{', {name: 'xDecl', code: 'x'}, ' |\n',
' ', {name: 'sumAssignment', code: 'sum = sum + x;'}, '\n',
'}'
]}
]},
';'
]});
const R = new EventRecorder();
globalEnv = R.program(sls.program);
function _for(start, end, body) {
const forEnv = R.mkEnv(sls.forDef);
R.declVar(sls.thisDecl, forEnv, 'this', start);
R.declVar(sls.endDecl, forEnv, 'end', end);
R.declVar(sls.bodyDecl, forEnv, 'body', body);
const loopEnv = R.enterScope(sls.theLoop, forEnv);
for (let idx = start; idx <= end; idx++) {
(R.send(sls.bodyCall, loopEnv, body, 'call', [idx]), R.receive(body(idx)));
}
R.leaveScope();
}
let g = R.declVar(sls.gDecl, globalEnv, 'g', 0);
function f() {
const fEnv = R.mkEnv(sls.fDef);
g = R.assignVar(sls.gAssignment, fEnv, globalEnv, 'g', g + 1);
return R.return(sls.fReturn, fEnv, g);
}
let sum = R.declVar(sls.sumDecl, globalEnv, 'sum', 0);
const forBody = x => {
const forBodyEnv = R.mkEnv(sls.forBody);
R.declVar(sls.xDecl, forBodyEnv, 'x', x);
sum = R.assignVar(sls.sumAssignment, forBodyEnv, globalEnv, 'sum', sum + x);
};
const start = (R.send(sls.fCall1, globalEnv, f, 'call', []), R.receive(f()));
const end = (R.send(sls.fCall2, globalEnv, f, 'call', []), R.receive(f())) + 1;
(R.send(sls.forCall, globalEnv, start, 'for_to:do:', [end, forBody]), R.receive(_for(start, end, forBody)));
});
addExample('emptySends', () => {
prog({name: 'program', code: [
{name: 'xDecl', code: 'var x = 5;'}, '\n',
{name: 'fDef', code: ['function f() { ', {name: 'fReturn', code: 'return 42;'}, '}']}, '\n\n',
{name: 'fCall1', code: 'f()'}, ';\n\n',
{name: 'fCall2', code: 'f()'}, '; ', {name: 'fCall3', code: 'f()'}, ';\n\n',
{name: 'fCall4', code: 'f()'}, '; ', {name: 'fCall5', code: 'f(\n)'}, '; ', {name: 'fCall6', code: 'f()'}, ';\n\n',
{name: 'xAssign1', code: 'x = 1;'}, '\n',
{name: 'xAssign2', code: 'x = 2;'}, ' ', {name: 'xAssign3', code: 'x = 3;'}, '\n',
{name: 'xAssign4', code: 'x = 4;'}, ' ', {name: 'xAssign5', code: 'x = 5;'}, ' ', {name: 'xAssign6', code: 'x = 6;'}, '\n\n',
{name: 'xAssign7', code: ['x = ', {name: 'fCall7', code: 'f()'}, ';']}, '\n',
{name: 'xAssign8', code: ['x = ', {name: 'fCall8', code: 'f()'}, ';']}, ' ', {name: 'fCall9', code: 'f()'}, ';\n',
{name: 'fCall10', code: 'f()'}, '; ', {name: 'xAssign9', code: ['x = ', {name: 'fCall11', code: 'f()'}, ';']}, ' ', {name: 'fCall12', code: 'f()'}, ';\n'
]});
const R = new EventRecorder();
globalEnv = R.program(sls.program);
let x = R.declVar(sls.xDecl, globalEnv, 'x', 5);
function f() {
const fEnv = R.mkEnv(sls.fDef);
return R.return(sls.fReturn, fEnv, 42);
}
(R.send(sls.fCall1, globalEnv, f, 'call', []), R.receive(f()));
(R.send(sls.fCall2, globalEnv, f, 'call', []), R.receive(f()));
(R.send(sls.fCall3, globalEnv, f, 'call', []), R.receive(f()));
(R.send(sls.fCall4, globalEnv, f, 'call', []), R.receive(f()));
(R.send(sls.fCall5, globalEnv, f, 'call', []), R.receive(f()));
(R.send(sls.fCall6, globalEnv, f, 'call', []), R.receive(f()));
x = R.assignVar(sls.xAssign1, globalEnv, globalEnv, 'x', 1);
x = R.assignVar(sls.xAssign2, globalEnv, globalEnv, 'x', 2);
x = R.assignVar(sls.xAssign3, globalEnv, globalEnv, 'x', 3);
x = R.assignVar(sls.xAssign4, globalEnv, globalEnv, 'x', 4);
x = R.assignVar(sls.xAssign5, globalEnv, globalEnv, 'x', 5);
x = R.assignVar(sls.xAssign6, globalEnv, globalEnv, 'x', 6);
x = R.assignVar(sls.xAssign7, globalEnv, globalEnv, 'x', (R.send(sls.fCall7, globalEnv, f, 'call', []), R.receive(f())));
x = R.assignVar(sls.xAssign8, globalEnv, globalEnv, 'x', (R.send(sls.fCall8, globalEnv, f, 'call', []), R.receive(f())));
(R.send(sls.fCall9, globalEnv, f, 'call', []), R.receive(f()));
(R.send(sls.fCall10, globalEnv, f, 'call', []), R.receive(f()));
x = R.assignVar(sls.xAssign9, globalEnv, globalEnv, 'x', (R.send(sls.fCall11, globalEnv, f, 'call', []), R.receive(f())));
(R.send(sls.fCall12, globalEnv, f, 'call', []), R.receive(f()));
});
/*
addExample('seymour-blockCall', () => {
prog({name: 'program', code: [
{name: 'xDecl', code: 'var x = 0;'}, '\n',
{name: 'ifThenCall', code: ['if true then: ', {name: 'trueBranch', code: ['{\n',
{name: 'bAssign', code: }}}
'for (',
{name: 'xDecl', code: 'let x = 0;'},
' x <= 3; ',
{name: 'xAssignment', code: 'x = x + 1'}, ') {\n',
' ', {name: 'sumAssignment', code: 'sum = sum + x;'}, '\n',
'}'
]});
});
*/
addExample('js-for', () => {
prog({name: 'program', code: [
{name: 'sumDecl', code: 'var sum = 0;'}, '\n', {name: 'theLoop', code: [
'for (',
{name: 'xDecl', code: 'let x = 0;'},
' x <= 3; ',
{name: 'xAssignment', code: 'x = x + 1'}, ') {\n',
' ', {name: 'sumAssignment', code: 'sum = sum + x;'}, '\n',
'}']}
]});
const R = new EventRecorder();
globalEnv = R.program(sls.program);
let sum = R.declVar(sls.sumDecl, globalEnv, 'sum', 0);
const loopEnv = R.enterScope(sls.theLoop, globalEnv);
for (
let x = R.declVar(sls.xDecl, loopEnv, 'x', 1);
x <= 3;
x = R.assignVar(sls.xAssignment, loopEnv, globalEnv, 'x', x + 1)) {
sum = R.assignVar(sls.sumAssignment, loopEnv, globalEnv, 'sum', sum + x);
}
R.leaveScope();
});
addExample('js-fact', () => {
prog({name: 'program', code: [
{name: 'fDef', code: ['function f(', {name: 'nDecl', code: 'n'}, ') {\n',
' if (n === 0) {\n',
' ', {name: 'baseReturn', code: 'return 1;'}, '\n',
' } else {\n',
' ', {name: 'mDecl', code: ['let m = ', {name: 'recFCall', code: 'f(n - 1)'}, ';']}, '\n',
' ', {name: 'recReturn', code: 'return n * m;'}, '\n',
' }\n',
'}']},
'\n\n',
{name: 'ansDecl', code: ['let ans = ', {name: 'fCall', code: 'f(5)'}, ';']}
]});
const R = new EventRecorder();
globalEnv = R.program(sls.program);
function f(n) {
const fEnv = R.mkEnv(sls.fDef);
R.declVar(sls.nDecl, fEnv, 'n', n);
if (n === 0) {
return R.return(sls.baseReturn, fEnv, 1);
} else {
let m = R.declVar(sls.mDecl, fEnv, 'm', (R.send(sls.recFCall, fEnv, f, 'call', [n - 1]), R.receive(f(n - 1))));
return R.return(sls.recReturn, fEnv, n * m);
}
}
let ans = R.declVar(sls.ansDecl, globalEnv, 'ans', (R.send(sls.fCall, globalEnv, f, 'call', [5]), R.receive(f(5))));
});
addExample('js-reduce', () => {
prog({name: 'program', code: [
{name: 'reduceAssignment', code: ['Array.prototype.reduce = ',
{name: 'reduceFn', code: [
'function', {name: 'thisDecl', code: '('}, {name: 'fnDecl', code: 'fn'}, ', ', {name: 'zDecl', code: 'z'}, ') {\n',
' ', {name: 'rDecl', code: 'var r = z;'}, '\n', {name: 'theLoop', code: [
' for (', {name: 'idxDecl', code: 'let idx = 0;'}, ' idx < this.length; ', {name: 'idxAssignment', code: 'idx = idx + 1'}, ') {\n',
' ', {name: 'rAssignment', code: ['r = ', {name: 'fnCall', code: 'fn(r, this[idx])'}, ';']}, '\n',
' }']}, '\n',
' ', {name: 'reduceReturn', code: 'return r;'}, '\n',
'}'
]}, ';']}, '\n\n',
{name: 'ansDecl', code: ['var ans = ',
{name: 'reduceCall', code: ['[1, 2, 3, 4].reduce(\n',
' ', {name: 'lambda', code: ['(', {name: 'xDecl', code: 'x'}, ', ', {name: 'yDecl', code: 'y'}, ') ',
{name: 'lambdaReturn', code: '=> x + y'}]}, ',\n',
' 0)']}, ';']}, '\n']});
const R = new EventRecorder();
globalEnv = R.program(sls.program);
const oldReduce = Array.prototype.reduce;
Array.prototype.reduce = R.assignInstVar(sls.reduceAssignment, globalEnv, Array.prototype, 'reduce', function(fn, z) {
const reduceEnv = R.mkEnv(sls.reduceFn);
R.declVar(sls.thisDecl, reduceEnv, 'this', this);
R.declVar(sls.fnDecl, reduceEnv, 'fn', fn);
R.declVar(sls.zDecl, reduceEnv, 'z', z);
let r = R.declVar(sls.rDecl, reduceEnv, 'r', z);
const loopEnv = R.enterScope(sls.theLoop, reduceEnv);
for (
let idx = R.declVar(sls.idxDecl, loopEnv, 'idx', 0);
idx < this.length;
idx = R.assignVar(sls.idxAssignment, loopEnv, reduceEnv, 'idx', idx + 1)) {
r = R.assignVar(sls.rAssignment, loopEnv, reduceEnv, 'r', (R.send(sls.fnCall, loopEnv, fn, 'call', [r, this[idx]]), R.receive(fn(r, this[idx]))));
}
R.leaveScope();
return R.return(sls.reduceReturn, reduceEnv, r);
});
const arr = [1, 2, 3, 4];
const f = function(x, y) {
const fEnv = R.mkEnv(sls.lambda);
R.declVar(sls.xDecl, fEnv, 'x', x);
R.declVar(sls.yDecl, fEnv, 'y', y);
return R.return(sls.lambdaReturn, fEnv, x + y);
};
let ans = R.declVar(sls.ansDecl, globalEnv, 'ans', (R.send(sls.reduceCall, globalEnv, arr, 'reduce', [f, 0]), R.receive(arr.reduce(f, 0))));
Array.prototype.reduce = oldReduce;
});
const exampleName = window.location.search.substring(1) || Object.keys(examples)[0];
examples[exampleName]();
renderMicroViz(globalEnv);
renderMacroViz(globalEnv);
</script>
</body>
</html>