eggtended-js
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A extended version of the Egg programming language from the Eloquent Javascript book.
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<li data-ice="doc"><span data-ice="kind" class="kind-function">F</span><span data-ice="name"><span><a href="function/index.html#static-function-checkIterable">checkIterable</a></span></span></li>
<li data-ice="doc"><span data-ice="kind" class="kind-function">F</span><span data-ice="name"><span><a href="function/index.html#static-function-chunk">chunk</a></span></span></li>
<li data-ice="doc"><span data-ice="kind" class="kind-function">F</span><span data-ice="name"><span><a href="function/index.html#static-function-getValidIndex">getValidIndex</a></span></span></li>
<li data-ice="doc"><span data-ice="kind" class="kind-function">F</span><span data-ice="name"><span><a href="function/index.html#static-function-ins">ins</a></span></span></li>
<li data-ice="doc"><a data-ice="dirPath" class="nav-dir-path" href="identifiers.html#interp">interp</a><span data-ice="kind" class="kind-class">C</span><span data-ice="name"><span><a href="class/lib/interp/ast.js~Apply.html">Apply</a></span></span></li>
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<li data-ice="doc"><span data-ice="kind" class="kind-class">C</span><span data-ice="name"><span><a href="class/lib/interp/symboltable.js~SymbolTable.html">SymbolTable</a></span></span></li>
<li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-SpecialForms">SpecialForms</a></span></span></li>
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<li data-ice="doc"><span data-ice="kind" class="kind-function">F</span><span data-ice="name"><span><a href="function/index.html#static-function-json2AST">json2AST</a></span></span></li>
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<li data-ice="doc"><a data-ice="dirPath" class="nav-dir-path" href="identifiers.html#repl">repl</a><span data-ice="kind" class="kind-function">F</span><span data-ice="name"><span><a href="function/index.html#static-function-eggCompleter">eggCompleter</a></span></span></li>
<li data-ice="doc"><span data-ice="kind" class="kind-function">F</span><span data-ice="name"><span><a href="function/index.html#static-function-getPromptLine">getPromptLine</a></span></span></li>
<li data-ice="doc"><span data-ice="kind" class="kind-function">F</span><span data-ice="name"><span><a href="function/index.html#static-function-repl">repl</a></span></span></li>
<li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-BLUE">BLUE</a></span></span></li>
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<li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-GREEN">GREEN</a></span></span></li>
<li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-RED">RED</a></span></span></li>
<li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-YELLOW">YELLOW</a></span></span></li>
<li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-eggClear">eggClear</a></span></span></li>
<li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-eggExit">eggExit</a></span></span></li>
<li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-eggHelp">eggHelp</a></span></span></li>
<li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-eggInfo">eggInfo</a></span></span></li>
<li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-eggRun">eggRun</a></span></span></li>
<li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-eggVersion">eggVersion</a></span></span></li>
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<div class="content" data-ice="content"><h1 data-ice="title">lib/repl/extensions.js</h1>
<pre class="source-code line-number raw-source-code"><code class="prettyprint linenums" data-ice="content">const process = require("process");
const fs = require("fs");
const { SpecialForms } = require("../interp/registry.js");
const { TopEnv } = require("../interp/environment.js");
const { Eggvm } = require("../interp/eggvm.js");
const colors = require("./colors.js");
// PROMPT
TopEnv["__PROMPT__"] = "> ";
const getPromptLine = () => {
return `${colors.YELLOW} ${TopEnv["__PROMPT__"]} ${colors.DEFAULT}`;
};
// Extra methods
const eggExit = (TopEnv["exit"] = () => {
console.log(colors.BLUE + "Closing the REPL... Bye!" + colors.DEFAULT);
process.exit(0);
});
const HELP = [
`${colors.BLUE} help() ${colors.DEFAULT} show this help menu`,
`${colors.RED} exit() | Ctrl-D ${colors.DEFAULT} close the REPL`,
`${colors.GREEN} run() ${colors.DEFAULT} execute a .egg file`,
`${colors.YELLOW} clear() ${colors.DEFAULT} clear the console`
];
const eggHelp = (TopEnv["help"] = () => {
console.log(" Egg help menu:");
HELP.forEach(line => {
console.log(line);
});
return "-".repeat(HELP[0].length - 10);
});
const eggInfo = (TopEnv["info"] = () => {
console.log(
colors.BLUE +
`
_ _ _
| | | | | |
___ __ _ __ _| |_ ___ _ __ __| | ___ __| |
/ _ \\/ _\` |/ _\` | __/ _ \\ '_ \\ / _\` |/ _ \\/ _\` |
| __/ (_| | (_| | || __/ | | | (_| | __/ (_| |
\\___|\\__, |\\__, |\\__\\___|_| |_|\\__,_|\\___|\\__,_|
__/ | __/ |
|___/ |___/
` +
colors.DEFAULT
);
console.log(`Version ${TopEnv["__VERSION__"]}`);
console.log("Created by David Afonso Dorta. License: GPLv2");
});
const eggClear = (TopEnv["clear"] = () => {
console.log("\u001B[2J\u001B[0;0f");
eggInfo();
});
const eggVersion = (TopEnv[
"__VERSION__"
] = require("../../package.json").version);
const eggRun = (TopEnv["run"] = (file, debug) => {
if (debug) {
console.log(fs.readFileSync(file, "utf8"));
}
Eggvm.runFromFile(file);
});
const eggCompleter = (line, env) => {
// Test if get hits from current directory
let hits = dirHits(line);
// Show hits from the REPL variables
if (hits.length === 0) {
const word = line.split(/[\s(),"]+/).slice(-1)[0];
hits = _filter(Object.keys(SpecialForms).concat(_allProperties(env)), word);
}
return [hits, line];
};
const _allProperties = obj => {
let keys = [];
let proto = obj;
while (proto) {
keys = keys.concat(Object.keys(proto));
proto = Object.getPrototypeOf(proto);
}
return keys;
};
const dirHits = line => {
const match = line.match(/(?:run)\((.*)/);
if (match) {
const path = match[1]
.replace(/["'`]/, "")
.trim()
.split("/");
const dirPath = path.slice(0, -1);
const filePath = path.slice(-1);
try {
return _filter(fs.readdirSync(`./${dirPath}`), filePath);
} catch (err) {
return [];
}
}
return [];
};
const _filter = (hits, word) => {
return hits.filter(hit => {
return hit.indexOf(word) === 0;
});
};
module.exports = {
getPromptLine,
eggExit,
eggHelp,
eggInfo,
eggClear,
eggVersion,
eggRun,
eggCompleter
};
</code></pre>
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