😎BREAKING CHANGES

39 files changed, 3723 insertions, 14 deletions

diff --git a/.gitignore b/.gitignore
index 5926f8d..690fd63 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
-readme.md
\ No newline at end of file
+readme.md
+__pycache__
\ No newline at end of file
diff --git a/docs/components/app.ts b/docs/components/app.ts
deleted file mode 100644
index 664c6fc..0000000
--- a/docs/components/app.ts
+++ /dev/null
@@ -1,12 +0,0 @@
-/**
- * This function will aid in the destruction of puny humans.
- * @param {boolean} killAllHumans - Should we kill all humans
- *
- * @todo Take over the entire world
- * @body Humans are weak; **Robots are strong**. We must cleanse the world of the virus that is humanity.
- */
-function ruleOverPunyHumans (killAllHumans) {
-  // We must strategize beep boop
-}
- 
-module.exports = ruleOverPunyHumans;
diff --git a/docs/pages/index.mdx b/docs/pages/index.mdx
deleted file mode 100644
index e69de29..0000000
--- a/docs/pages/index.mdx
+++ /dev/null
diff --git a/psi/__init__.py b/psi/__init__.py
index e5c593e..0c9f577 100644
--- a/psi/__init__.py
+++ b/psi/__init__.py
@@ -4,3 +4,23 @@
 """

 

 __all__ = ['Psi']

+

+from psi.execution import Execution

+

+class Psi:

+    def __init__(self, input):

+        self.input = input

+        self.execution = Execution(input)

+        self.result = None

+

+    def execute(self):

+        self.result = self.execution.execute()

+        return self.result

+

+    def get_result(self):

+        return self.result

+

+    def set_input(self, input):

+        self.input = input

+        self.execution = Execution(input)

+        self.result = None

diff --git a/psi/docs/_build/html/.buildinfo b/psi/docs/_build/html/.buildinfo
new file mode 100644
index 0000000..df7bb57
--- /dev/null
+++ b/psi/docs/_build/html/.buildinfo
@@ -0,0 +1,4 @@
+# Sphinx build info version 1
+# This file hashes the configuration used when building these files. When it is not found, a full rebuild will be done.
+config: 4c6673ae9407be59cbf8e6910887dc71
+tags: 645f666f9bcd5a90fca523b33c5a78b7
diff --git a/psi/docs/_build/html/.doctrees/api/psi.doctree b/psi/docs/_build/html/.doctrees/api/psi.doctree
new file mode 100644
index 0000000..eef2304
--- /dev/null
+++ b/psi/docs/_build/html/.doctrees/api/psi.doctree
diff --git a/psi/docs/_build/html/.doctrees/environment.pickle b/psi/docs/_build/html/.doctrees/environment.pickle
new file mode 100644
index 0000000..33a77e0
--- /dev/null
+++ b/psi/docs/_build/html/.doctrees/environment.pickle
diff --git a/psi/docs/_build/html/.doctrees/index.doctree b/psi/docs/_build/html/.doctrees/index.doctree
new file mode 100644
index 0000000..e0ac162
--- /dev/null
+++ b/psi/docs/_build/html/.doctrees/index.doctree
diff --git a/psi/docs/_build/html/_sources/api/psi.rst.txt b/psi/docs/_build/html/_sources/api/psi.rst.txt
new file mode 100644
index 0000000..8177e9b
--- /dev/null
+++ b/psi/docs/_build/html/_sources/api/psi.rst.txt
@@ -0,0 +1,7 @@
+Psi API Reference
+=================
+
+.. automodule:: psi
+   :members:
+   :undoc-members:
+   :show-inheritance:
diff --git a/psi/docs/_build/html/_sources/index.rst.txt b/psi/docs/_build/html/_sources/index.rst.txt
new file mode 100644
index 0000000..cb919b0
--- /dev/null
+++ b/psi/docs/_build/html/_sources/index.rst.txt
@@ -0,0 +1,5 @@
+.. toctree::
+   :maxdepth: 2
+   :caption: Modules
+
+   psi/
\ No newline at end of file
diff --git a/psi/docs/_build/html/_static/alabaster.css b/psi/docs/_build/html/_static/alabaster.css
new file mode 100644
index 0000000..517d0b2
--- /dev/null
+++ b/psi/docs/_build/html/_static/alabaster.css
@@ -0,0 +1,703 @@
+@import url("basic.css");
+
+/* -- page layout ----------------------------------------------------------- */
+
+body {
+    font-family: Georgia, serif;
+    font-size: 17px;
+    background-color: #fff;
+    color: #000;
+    margin: 0;
+    padding: 0;
+}
+
+
+div.document {
+    width: 940px;
+    margin: 30px auto 0 auto;
+}
+
+div.documentwrapper {
+    float: left;
+    width: 100%;
+}
+
+div.bodywrapper {
+    margin: 0 0 0 220px;
+}
+
+div.sphinxsidebar {
+    width: 220px;
+    font-size: 14px;
+    line-height: 1.5;
+}
+
+hr {
+    border: 1px solid #B1B4B6;
+}
+
+div.body {
+    background-color: #fff;
+    color: #3E4349;
+    padding: 0 30px 0 30px;
+}
+
+div.body > .section {
+    text-align: left;
+}
+
+div.footer {
+    width: 940px;
+    margin: 20px auto 30px auto;
+    font-size: 14px;
+    color: #888;
+    text-align: right;
+}
+
+div.footer a {
+    color: #888;
+}
+
+p.caption {
+    font-family: inherit;
+    font-size: inherit;
+}
+
+
+div.relations {
+    display: none;
+}
+
+
+div.sphinxsidebar a {
+    color: #444;
+    text-decoration: none;
+    border-bottom: 1px dotted #999;
+}
+
+div.sphinxsidebar a:hover {
+    border-bottom: 1px solid #999;
+}
+
+div.sphinxsidebarwrapper {
+    padding: 18px 10px;
+}
+
+div.sphinxsidebarwrapper p.logo {
+    padding: 0;
+    margin: -10px 0 0 0px;
+    text-align: center;
+}
+
+div.sphinxsidebarwrapper h1.logo {
+    margin-top: -10px;
+    text-align: center;
+    margin-bottom: 5px;
+    text-align: left;
+}
+
+div.sphinxsidebarwrapper h1.logo-name {
+    margin-top: 0px;
+}
+
+div.sphinxsidebarwrapper p.blurb {
+    margin-top: 0;
+    font-style: normal;
+}
+
+div.sphinxsidebar h3,
+div.sphinxsidebar h4 {
+    font-family: Georgia, serif;
+    color: #444;
+    font-size: 24px;
+    font-weight: normal;
+    margin: 0 0 5px 0;
+    padding: 0;
+}
+
+div.sphinxsidebar h4 {
+    font-size: 20px;
+}
+
+div.sphinxsidebar h3 a {
+    color: #444;
+}
+
+div.sphinxsidebar p.logo a,
+div.sphinxsidebar h3 a,
+div.sphinxsidebar p.logo a:hover,
+div.sphinxsidebar h3 a:hover {
+    border: none;
+}
+
+div.sphinxsidebar p {
+    color: #555;
+    margin: 10px 0;
+}
+
+div.sphinxsidebar ul {
+    margin: 10px 0;
+    padding: 0;
+    color: #000;
+}
+
+div.sphinxsidebar ul li.toctree-l1 > a {
+    font-size: 120%;
+}
+
+div.sphinxsidebar ul li.toctree-l2 > a {
+    font-size: 110%;
+}
+
+div.sphinxsidebar input {
+    border: 1px solid #CCC;
+    font-family: Georgia, serif;
+    font-size: 1em;
+}
+
+div.sphinxsidebar hr {
+    border: none;
+    height: 1px;
+    color: #AAA;
+    background: #AAA;
+
+    text-align: left;
+    margin-left: 0;
+    width: 50%;
+}
+
+div.sphinxsidebar .badge {
+    border-bottom: none;
+}
+
+div.sphinxsidebar .badge:hover {
+    border-bottom: none;
+}
+
+/* To address an issue with donation coming after search */
+div.sphinxsidebar h3.donation {
+    margin-top: 10px;
+}
+
+/* -- body styles ----------------------------------------------------------- */
+
+a {
+    color: #004B6B;
+    text-decoration: underline;
+}
+
+a:hover {
+    color: #6D4100;
+    text-decoration: underline;
+}
+
+div.body h1,
+div.body h2,
+div.body h3,
+div.body h4,
+div.body h5,
+div.body h6 {
+    font-family: Georgia, serif;
+    font-weight: normal;
+    margin: 30px 0px 10px 0px;
+    padding: 0;
+}
+
+div.body h1 { margin-top: 0; padding-top: 0; font-size: 240%; }
+div.body h2 { font-size: 180%; }
+div.body h3 { font-size: 150%; }
+div.body h4 { font-size: 130%; }
+div.body h5 { font-size: 100%; }
+div.body h6 { font-size: 100%; }
+
+a.headerlink {
+    color: #DDD;
+    padding: 0 4px;
+    text-decoration: none;
+}
+
+a.headerlink:hover {
+    color: #444;
+    background: #EAEAEA;
+}
+
+div.body p, div.body dd, div.body li {
+    line-height: 1.4em;
+}
+
+div.admonition {
+    margin: 20px 0px;
+    padding: 10px 30px;
+    background-color: #EEE;
+    border: 1px solid #CCC;
+}
+
+div.admonition tt.xref, div.admonition code.xref, div.admonition a tt {
+    background-color: #FBFBFB;
+    border-bottom: 1px solid #fafafa;
+}
+
+div.admonition p.admonition-title {
+    font-family: Georgia, serif;
+    font-weight: normal;
+    font-size: 24px;
+    margin: 0 0 10px 0;
+    padding: 0;
+    line-height: 1;
+}
+
+div.admonition p.last {
+    margin-bottom: 0;
+}
+
+div.highlight {
+    background-color: #fff;
+}
+
+dt:target, .highlight {
+    background: #FAF3E8;
+}
+
+div.warning {
+    background-color: #FCC;
+    border: 1px solid #FAA;
+}
+
+div.danger {
+    background-color: #FCC;
+    border: 1px solid #FAA;
+    -moz-box-shadow: 2px 2px 4px #D52C2C;
+    -webkit-box-shadow: 2px 2px 4px #D52C2C;
+    box-shadow: 2px 2px 4px #D52C2C;
+}
+
+div.error {
+    background-color: #FCC;
+    border: 1px solid #FAA;
+    -moz-box-shadow: 2px 2px 4px #D52C2C;
+    -webkit-box-shadow: 2px 2px 4px #D52C2C;
+    box-shadow: 2px 2px 4px #D52C2C;
+}
+
+div.caution {
+    background-color: #FCC;
+    border: 1px solid #FAA;
+}
+
+div.attention {
+    background-color: #FCC;
+    border: 1px solid #FAA;
+}
+
+div.important {
+    background-color: #EEE;
+    border: 1px solid #CCC;
+}
+
+div.note {
+    background-color: #EEE;
+    border: 1px solid #CCC;
+}
+
+div.tip {
+    background-color: #EEE;
+    border: 1px solid #CCC;
+}
+
+div.hint {
+    background-color: #EEE;
+    border: 1px solid #CCC;
+}
+
+div.seealso {
+    background-color: #EEE;
+    border: 1px solid #CCC;
+}
+
+div.topic {
+    background-color: #EEE;
+}
+
+p.admonition-title {
+    display: inline;
+}
+
+p.admonition-title:after {
+    content: ":";
+}
+
+pre, tt, code {
+    font-family: 'Consolas', 'Menlo', 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', monospace;
+    font-size: 0.9em;
+}
+
+.hll {
+    background-color: #FFC;
+    margin: 0 -12px;
+    padding: 0 12px;
+    display: block;
+}
+
+img.screenshot {
+}
+
+tt.descname, tt.descclassname, code.descname, code.descclassname {
+    font-size: 0.95em;
+}
+
+tt.descname, code.descname {
+    padding-right: 0.08em;
+}
+
+img.screenshot {
+    -moz-box-shadow: 2px 2px 4px #EEE;
+    -webkit-box-shadow: 2px 2px 4px #EEE;
+    box-shadow: 2px 2px 4px #EEE;
+}
+
+table.docutils {
+    border: 1px solid #888;
+    -moz-box-shadow: 2px 2px 4px #EEE;
+    -webkit-box-shadow: 2px 2px 4px #EEE;
+    box-shadow: 2px 2px 4px #EEE;
+}
+
+table.docutils td, table.docutils th {
+    border: 1px solid #888;
+    padding: 0.25em 0.7em;
+}
+
+table.field-list, table.footnote {
+    border: none;
+    -moz-box-shadow: none;
+    -webkit-box-shadow: none;
+    box-shadow: none;
+}
+
+table.footnote {
+    margin: 15px 0;
+    width: 100%;
+    border: 1px solid #EEE;
+    background: #FDFDFD;
+    font-size: 0.9em;
+}
+
+table.footnote + table.footnote {
+    margin-top: -15px;
+    border-top: none;
+}
+
+table.field-list th {
+    padding: 0 0.8em 0 0;
+}
+
+table.field-list td {
+    padding: 0;
+}
+
+table.field-list p {
+    margin-bottom: 0.8em;
+}
+
+/* Cloned from
+ * https://github.com/sphinx-doc/sphinx/commit/ef60dbfce09286b20b7385333d63a60321784e68
+ */
+.field-name {
+    -moz-hyphens: manual;
+    -ms-hyphens: manual;
+    -webkit-hyphens: manual;
+    hyphens: manual;
+}
+
+table.footnote td.label {
+    width: .1px;
+    padding: 0.3em 0 0.3em 0.5em;
+}
+
+table.footnote td {
+    padding: 0.3em 0.5em;
+}
+
+dl {
+    margin-left: 0;
+    margin-right: 0;
+    margin-top: 0;
+    padding: 0;
+}
+
+dl dd {
+    margin-left: 30px;
+}
+
+blockquote {
+    margin: 0 0 0 30px;
+    padding: 0;
+}
+
+ul, ol {
+    /* Matches the 30px from the narrow-screen "li > ul" selector below */
+    margin: 10px 0 10px 30px;
+    padding: 0;
+}
+
+pre {
+    background: #EEE;
+    padding: 7px 30px;
+    margin: 15px 0px;
+    line-height: 1.3em;
+}
+
+div.viewcode-block:target {
+    background: #ffd;
+}
+
+dl pre, blockquote pre, li pre {
+    margin-left: 0;
+    padding-left: 30px;
+}
+
+tt, code {
+    background-color: #ecf0f3;
+    color: #222;
+    /* padding: 1px 2px; */
+}
+
+tt.xref, code.xref, a tt {
+    background-color: #FBFBFB;
+    border-bottom: 1px solid #fff;
+}
+
+a.reference {
+    text-decoration: none;
+    border-bottom: 1px dotted #004B6B;
+}
+
+/* Don't put an underline on images */
+a.image-reference, a.image-reference:hover {
+    border-bottom: none;
+}
+
+a.reference:hover {
+    border-bottom: 1px solid #6D4100;
+}
+
+a.footnote-reference {
+    text-decoration: none;
+    font-size: 0.7em;
+    vertical-align: top;
+    border-bottom: 1px dotted #004B6B;
+}
+
+a.footnote-reference:hover {
+    border-bottom: 1px solid #6D4100;
+}
+
+a:hover tt, a:hover code {
+    background: #EEE;
+}
+
+
+@media screen and (max-width: 870px) {
+
+    div.sphinxsidebar {
+    	display: none;
+    }
+
+    div.document {
+       width: 100%;
+
+    }
+
+    div.documentwrapper {
+    	margin-left: 0;
+    	margin-top: 0;
+    	margin-right: 0;
+    	margin-bottom: 0;
+    }
+
+    div.bodywrapper {
+    	margin-top: 0;
+    	margin-right: 0;
+    	margin-bottom: 0;
+    	margin-left: 0;
+    }
+
+    ul {
+    	margin-left: 0;
+    }
+
+	li > ul {
+        /* Matches the 30px from the "ul, ol" selector above */
+		margin-left: 30px;
+	}
+
+    .document {
+    	width: auto;
+    }
+
+    .footer {
+    	width: auto;
+    }
+
+    .bodywrapper {
+    	margin: 0;
+    }
+
+    .footer {
+    	width: auto;
+    }
+
+    .github {
+        display: none;
+    }
+
+
+
+}
+
+
+
+@media screen and (max-width: 875px) {
+
+    body {
+        margin: 0;
+        padding: 20px 30px;
+    }
+
+    div.documentwrapper {
+        float: none;
+        background: #fff;
+    }
+
+    div.sphinxsidebar {
+        display: block;
+        float: none;
+        width: 102.5%;
+        margin: 50px -30px -20px -30px;
+        padding: 10px 20px;
+        background: #333;
+        color: #FFF;
+    }
+
+    div.sphinxsidebar h3, div.sphinxsidebar h4, div.sphinxsidebar p,
+    div.sphinxsidebar h3 a {
+        color: #fff;
+    }
+
+    div.sphinxsidebar a {
+        color: #AAA;
+    }
+
+    div.sphinxsidebar p.logo {
+        display: none;
+    }
+
+    div.document {
+        width: 100%;
+        margin: 0;
+    }
+
+    div.footer {
+        display: none;
+    }
+
+    div.bodywrapper {
+        margin: 0;
+    }
+
+    div.body {
+        min-height: 0;
+        padding: 0;
+    }
+
+    .rtd_doc_footer {
+        display: none;
+    }
+
+    .document {
+        width: auto;
+    }
+
+    .footer {
+        width: auto;
+    }
+
+    .footer {
+        width: auto;
+    }
+
+    .github {
+        display: none;
+    }
+}
+
+
+/* misc. */
+
+.revsys-inline {
+    display: none!important;
+}
+
+/* Make nested-list/multi-paragraph items look better in Releases changelog
+ * pages. Without this, docutils' magical list fuckery causes inconsistent
+ * formatting between different release sub-lists.
+ */
+div#changelog > div.section > ul > li > p:only-child {
+    margin-bottom: 0;
+}
+
+/* Hide fugly table cell borders in ..bibliography:: directive output */
+table.docutils.citation, table.docutils.citation td, table.docutils.citation th {
+  border: none;
+  /* Below needed in some edge cases; if not applied, bottom shadows appear */
+  -moz-box-shadow: none;
+  -webkit-box-shadow: none;
+  box-shadow: none;
+}
+
+
+/* relbar */
+
+.related {
+    line-height: 30px;
+    width: 100%;
+    font-size: 0.9rem;
+}
+
+.related.top {
+    border-bottom: 1px solid #EEE;
+    margin-bottom: 20px;
+}
+
+.related.bottom {
+    border-top: 1px solid #EEE;
+}
+
+.related ul {
+    padding: 0;
+    margin: 0;
+    list-style: none;
+}
+
+.related li {
+    display: inline;
+}
+
+nav#rellinks {
+    float: right;
+}
+
+nav#rellinks li+li:before {
+    content: "|";
+}
+
+nav#breadcrumbs li+li:before {
+    content: "\00BB";
+}
+
+/* Hide certain items when printing */
+@media print {
+    div.related {
+        display: none;
+    }
+}
\ No newline at end of file
diff --git a/psi/docs/_build/html/_static/basic.css b/psi/docs/_build/html/_static/basic.css
new file mode 100644
index 0000000..7577acb
--- /dev/null
+++ b/psi/docs/_build/html/_static/basic.css
@@ -0,0 +1,903 @@
+/*
+ * basic.css
+ * ~~~~~~~~~
+ *
+ * Sphinx stylesheet -- basic theme.
+ *
+ * :copyright: Copyright 2007-2023 by the Sphinx team, see AUTHORS.
+ * :license: BSD, see LICENSE for details.
+ *
+ */
+
+/* -- main layout ----------------------------------------------------------- */
+
+div.clearer {
+    clear: both;
+}
+
+div.section::after {
+    display: block;
+    content: '';
+    clear: left;
+}
+
+/* -- relbar ---------------------------------------------------------------- */
+
+div.related {
+    width: 100%;
+    font-size: 90%;
+}
+
+div.related h3 {
+    display: none;
+}
+
+div.related ul {
+    margin: 0;
+    padding: 0 0 0 10px;
+    list-style: none;
+}
+
+div.related li {
+    display: inline;
+}
+
+div.related li.right {
+    float: right;
+    margin-right: 5px;
+}
+
+/* -- sidebar --------------------------------------------------------------- */
+
+div.sphinxsidebarwrapper {
+    padding: 10px 5px 0 10px;
+}
+
+div.sphinxsidebar {
+    float: left;
+    width: 230px;
+    margin-left: -100%;
+    font-size: 90%;
+    word-wrap: break-word;
+    overflow-wrap : break-word;
+}
+
+div.sphinxsidebar ul {
+    list-style: none;
+}
+
+div.sphinxsidebar ul ul,
+div.sphinxsidebar ul.want-points {
+    margin-left: 20px;
+    list-style: square;
+}
+
+div.sphinxsidebar ul ul {
+    margin-top: 0;
+    margin-bottom: 0;
+}
+
+div.sphinxsidebar form {
+    margin-top: 10px;
+}
+
+div.sphinxsidebar input {
+    border: 1px solid #98dbcc;
+    font-family: sans-serif;
+    font-size: 1em;
+}
+
+div.sphinxsidebar #searchbox form.search {
+    overflow: hidden;
+}
+
+div.sphinxsidebar #searchbox input[type="text"] {
+    float: left;
+    width: 80%;
+    padding: 0.25em;
+    box-sizing: border-box;
+}
+
+div.sphinxsidebar #searchbox input[type="submit"] {
+    float: left;
+    width: 20%;
+    border-left: none;
+    padding: 0.25em;
+    box-sizing: border-box;
+}
+
+
+img {
+    border: 0;
+    max-width: 100%;
+}
+
+/* -- search page ----------------------------------------------------------- */
+
+ul.search {
+    margin: 10px 0 0 20px;
+    padding: 0;
+}
+
+ul.search li {
+    padding: 5px 0 5px 20px;
+    background-image: url(file.png);
+    background-repeat: no-repeat;
+    background-position: 0 7px;
+}
+
+ul.search li a {
+    font-weight: bold;
+}
+
+ul.search li p.context {
+    color: #888;
+    margin: 2px 0 0 30px;
+    text-align: left;
+}
+
+ul.keywordmatches li.goodmatch a {
+    font-weight: bold;
+}
+
+/* -- index page ------------------------------------------------------------ */
+
+table.contentstable {
+    width: 90%;
+    margin-left: auto;
+    margin-right: auto;
+}
+
+table.contentstable p.biglink {
+    line-height: 150%;
+}
+
+a.biglink {
+    font-size: 1.3em;
+}
+
+span.linkdescr {
+    font-style: italic;
+    padding-top: 5px;
+    font-size: 90%;
+}
+
+/* -- general index --------------------------------------------------------- */
+
+table.indextable {
+    width: 100%;
+}
+
+table.indextable td {
+    text-align: left;
+    vertical-align: top;
+}
+
+table.indextable ul {
+    margin-top: 0;
+    margin-bottom: 0;
+    list-style-type: none;
+}
+
+table.indextable > tbody > tr > td > ul {
+    padding-left: 0em;
+}
+
+table.indextable tr.pcap {
+    height: 10px;
+}
+
+table.indextable tr.cap {
+    margin-top: 10px;
+    background-color: #f2f2f2;
+}
+
+img.toggler {
+    margin-right: 3px;
+    margin-top: 3px;
+    cursor: pointer;
+}
+
+div.modindex-jumpbox {
+    border-top: 1px solid #ddd;
+    border-bottom: 1px solid #ddd;
+    margin: 1em 0 1em 0;
+    padding: 0.4em;
+}
+
+div.genindex-jumpbox {
+    border-top: 1px solid #ddd;
+    border-bottom: 1px solid #ddd;
+    margin: 1em 0 1em 0;
+    padding: 0.4em;
+}
+
+/* -- domain module index --------------------------------------------------- */
+
+table.modindextable td {
+    padding: 2px;
+    border-collapse: collapse;
+}
+
+/* -- general body styles --------------------------------------------------- */
+
+div.body {
+    min-width: 360px;
+    max-width: 800px;
+}
+
+div.body p, div.body dd, div.body li, div.body blockquote {
+    -moz-hyphens: auto;
+    -ms-hyphens: auto;
+    -webkit-hyphens: auto;
+    hyphens: auto;
+}
+
+a.headerlink {
+    visibility: hidden;
+}
+
+h1:hover > a.headerlink,
+h2:hover > a.headerlink,
+h3:hover > a.headerlink,
+h4:hover > a.headerlink,
+h5:hover > a.headerlink,
+h6:hover > a.headerlink,
+dt:hover > a.headerlink,
+caption:hover > a.headerlink,
+p.caption:hover > a.headerlink,
+div.code-block-caption:hover > a.headerlink {
+    visibility: visible;
+}
+
+div.body p.caption {
+    text-align: inherit;
+}
+
+div.body td {
+    text-align: left;
+}
+
+.first {
+    margin-top: 0 !important;
+}
+
+p.rubric {
+    margin-top: 30px;
+    font-weight: bold;
+}
+
+img.align-left, figure.align-left, .figure.align-left, object.align-left {
+    clear: left;
+    float: left;
+    margin-right: 1em;
+}
+
+img.align-right, figure.align-right, .figure.align-right, object.align-right {
+    clear: right;
+    float: right;
+    margin-left: 1em;
+}
+
+img.align-center, figure.align-center, .figure.align-center, object.align-center {
+  display: block;
+  margin-left: auto;
+  margin-right: auto;
+}
+
+img.align-default, figure.align-default, .figure.align-default {
+  display: block;
+  margin-left: auto;
+  margin-right: auto;
+}
+
+.align-left {
+    text-align: left;
+}
+
+.align-center {
+    text-align: center;
+}
+
+.align-default {
+    text-align: center;
+}
+
+.align-right {
+    text-align: right;
+}
+
+/* -- sidebars -------------------------------------------------------------- */
+
+div.sidebar,
+aside.sidebar {
+    margin: 0 0 0.5em 1em;
+    border: 1px solid #ddb;
+    padding: 7px;
+    background-color: #ffe;
+    width: 40%;
+    float: right;
+    clear: right;
+    overflow-x: auto;
+}
+
+p.sidebar-title {
+    font-weight: bold;
+}
+
+nav.contents,
+aside.topic,
+div.admonition, div.topic, blockquote {
+    clear: left;
+}
+
+/* -- topics ---------------------------------------------------------------- */
+
+nav.contents,
+aside.topic,
+div.topic {
+    border: 1px solid #ccc;
+    padding: 7px;
+    margin: 10px 0 10px 0;
+}
+
+p.topic-title {
+    font-size: 1.1em;
+    font-weight: bold;
+    margin-top: 10px;
+}
+
+/* -- admonitions ----------------------------------------------------------- */
+
+div.admonition {
+    margin-top: 10px;
+    margin-bottom: 10px;
+    padding: 7px;
+}
+
+div.admonition dt {
+    font-weight: bold;
+}
+
+p.admonition-title {
+    margin: 0px 10px 5px 0px;
+    font-weight: bold;
+}
+
+div.body p.centered {
+    text-align: center;
+    margin-top: 25px;
+}
+
+/* -- content of sidebars/topics/admonitions -------------------------------- */
+
+div.sidebar > :last-child,
+aside.sidebar > :last-child,
+nav.contents > :last-child,
+aside.topic > :last-child,
+div.topic > :last-child,
+div.admonition > :last-child {
+    margin-bottom: 0;
+}
+
+div.sidebar::after,
+aside.sidebar::after,
+nav.contents::after,
+aside.topic::after,
+div.topic::after,
+div.admonition::after,
+blockquote::after {
+    display: block;
+    content: '';
+    clear: both;
+}
+
+/* -- tables ---------------------------------------------------------------- */
+
+table.docutils {
+    margin-top: 10px;
+    margin-bottom: 10px;
+    border: 0;
+    border-collapse: collapse;
+}
+
+table.align-center {
+    margin-left: auto;
+    margin-right: auto;
+}
+
+table.align-default {
+    margin-left: auto;
+    margin-right: auto;
+}
+
+table caption span.caption-number {
+    font-style: italic;
+}
+
+table caption span.caption-text {
+}
+
+table.docutils td, table.docutils th {
+    padding: 1px 8px 1px 5px;
+    border-top: 0;
+    border-left: 0;
+    border-right: 0;
+    border-bottom: 1px solid #aaa;
+}
+
+th {
+    text-align: left;
+    padding-right: 5px;
+}
+
+table.citation {
+    border-left: solid 1px gray;
+    margin-left: 1px;
+}
+
+table.citation td {
+    border-bottom: none;
+}
+
+th > :first-child,
+td > :first-child {
+    margin-top: 0px;
+}
+
+th > :last-child,
+td > :last-child {
+    margin-bottom: 0px;
+}
+
+/* -- figures --------------------------------------------------------------- */
+
+div.figure, figure {
+    margin: 0.5em;
+    padding: 0.5em;
+}
+
+div.figure p.caption, figcaption {
+    padding: 0.3em;
+}
+
+div.figure p.caption span.caption-number,
+figcaption span.caption-number {
+    font-style: italic;
+}
+
+div.figure p.caption span.caption-text,
+figcaption span.caption-text {
+}
+
+/* -- field list styles ----------------------------------------------------- */
+
+table.field-list td, table.field-list th {
+    border: 0 !important;
+}
+
+.field-list ul {
+    margin: 0;
+    padding-left: 1em;
+}
+
+.field-list p {
+    margin: 0;
+}
+
+.field-name {
+    -moz-hyphens: manual;
+    -ms-hyphens: manual;
+    -webkit-hyphens: manual;
+    hyphens: manual;
+}
+
+/* -- hlist styles ---------------------------------------------------------- */
+
+table.hlist {
+    margin: 1em 0;
+}
+
+table.hlist td {
+    vertical-align: top;
+}
+
+/* -- object description styles --------------------------------------------- */
+
+.sig {
+	font-family: 'Consolas', 'Menlo', 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', monospace;
+}
+
+.sig-name, code.descname {
+    background-color: transparent;
+    font-weight: bold;
+}
+
+.sig-name {
+	font-size: 1.1em;
+}
+
+code.descname {
+    font-size: 1.2em;
+}
+
+.sig-prename, code.descclassname {
+    background-color: transparent;
+}
+
+.optional {
+    font-size: 1.3em;
+}
+
+.sig-paren {
+    font-size: larger;
+}
+
+.sig-param.n {
+	font-style: italic;
+}
+
+/* C++ specific styling */
+
+.sig-inline.c-texpr,
+.sig-inline.cpp-texpr {
+	font-family: unset;
+}
+
+.sig.c   .k, .sig.c   .kt,
+.sig.cpp .k, .sig.cpp .kt {
+	color: #0033B3;
+}
+
+.sig.c   .m,
+.sig.cpp .m {
+	color: #1750EB;
+}
+
+.sig.c   .s, .sig.c   .sc,
+.sig.cpp .s, .sig.cpp .sc {
+	color: #067D17;
+}
+
+
+/* -- other body styles ----------------------------------------------------- */
+
+ol.arabic {
+    list-style: decimal;
+}
+
+ol.loweralpha {
+    list-style: lower-alpha;
+}
+
+ol.upperalpha {
+    list-style: upper-alpha;
+}
+
+ol.lowerroman {
+    list-style: lower-roman;
+}
+
+ol.upperroman {
+    list-style: upper-roman;
+}
+
+:not(li) > ol > li:first-child > :first-child,
+:not(li) > ul > li:first-child > :first-child {
+    margin-top: 0px;
+}
+
+:not(li) > ol > li:last-child > :last-child,
+:not(li) > ul > li:last-child > :last-child {
+    margin-bottom: 0px;
+}
+
+ol.simple ol p,
+ol.simple ul p,
+ul.simple ol p,
+ul.simple ul p {
+    margin-top: 0;
+}
+
+ol.simple > li:not(:first-child) > p,
+ul.simple > li:not(:first-child) > p {
+    margin-top: 0;
+}
+
+ol.simple p,
+ul.simple p {
+    margin-bottom: 0;
+}
+
+aside.footnote > span,
+div.citation > span {
+    float: left;
+}
+aside.footnote > span:last-of-type,
+div.citation > span:last-of-type {
+  padding-right: 0.5em;
+}
+aside.footnote > p {
+  margin-left: 2em;
+}
+div.citation > p {
+  margin-left: 4em;
+}
+aside.footnote > p:last-of-type,
+div.citation > p:last-of-type {
+    margin-bottom: 0em;
+}
+aside.footnote > p:last-of-type:after,
+div.citation > p:last-of-type:after {
+    content: "";
+    clear: both;
+}
+
+dl.field-list {
+    display: grid;
+    grid-template-columns: fit-content(30%) auto;
+}
+
+dl.field-list > dt {
+    font-weight: bold;
+    word-break: break-word;
+    padding-left: 0.5em;
+    padding-right: 5px;
+}
+
+dl.field-list > dd {
+    padding-left: 0.5em;
+    margin-top: 0em;
+    margin-left: 0em;
+    margin-bottom: 0em;
+}
+
+dl {
+    margin-bottom: 15px;
+}
+
+dd > :first-child {
+    margin-top: 0px;
+}
+
+dd ul, dd table {
+    margin-bottom: 10px;
+}
+
+dd {
+    margin-top: 3px;
+    margin-bottom: 10px;
+    margin-left: 30px;
+}
+
+dl > dd:last-child,
+dl > dd:last-child > :last-child {
+    margin-bottom: 0;
+}
+
+dt:target, span.highlighted {
+    background-color: #fbe54e;
+}
+
+rect.highlighted {
+    fill: #fbe54e;
+}
+
+dl.glossary dt {
+    font-weight: bold;
+    font-size: 1.1em;
+}
+
+.versionmodified {
+    font-style: italic;
+}
+
+.system-message {
+    background-color: #fda;
+    padding: 5px;
+    border: 3px solid red;
+}
+
+.footnote:target  {
+    background-color: #ffa;
+}
+
+.line-block {
+    display: block;
+    margin-top: 1em;
+    margin-bottom: 1em;
+}
+
+.line-block .line-block {
+    margin-top: 0;
+    margin-bottom: 0;
+    margin-left: 1.5em;
+}
+
+.guilabel, .menuselection {
+    font-family: sans-serif;
+}
+
+.accelerator {
+    text-decoration: underline;
+}
+
+.classifier {
+    font-style: oblique;
+}
+
+.classifier:before {
+    font-style: normal;
+    margin: 0 0.5em;
+    content: ":";
+    display: inline-block;
+}
+
+abbr, acronym {
+    border-bottom: dotted 1px;
+    cursor: help;
+}
+
+/* -- code displays --------------------------------------------------------- */
+
+pre {
+    overflow: auto;
+    overflow-y: hidden;  /* fixes display issues on Chrome browsers */
+}
+
+pre, div[class*="highlight-"] {
+    clear: both;
+}
+
+span.pre {
+    -moz-hyphens: none;
+    -ms-hyphens: none;
+    -webkit-hyphens: none;
+    hyphens: none;
+    white-space: nowrap;
+}
+
+div[class*="highlight-"] {
+    margin: 1em 0;
+}
+
+td.linenos pre {
+    border: 0;
+    background-color: transparent;
+    color: #aaa;
+}
+
+table.highlighttable {
+    display: block;
+}
+
+table.highlighttable tbody {
+    display: block;
+}
+
+table.highlighttable tr {
+    display: flex;
+}
+
+table.highlighttable td {
+    margin: 0;
+    padding: 0;
+}
+
+table.highlighttable td.linenos {
+    padding-right: 0.5em;
+}
+
+table.highlighttable td.code {
+    flex: 1;
+    overflow: hidden;
+}
+
+.highlight .hll {
+    display: block;
+}
+
+div.highlight pre,
+table.highlighttable pre {
+    margin: 0;
+}
+
+div.code-block-caption + div {
+    margin-top: 0;
+}
+
+div.code-block-caption {
+    margin-top: 1em;
+    padding: 2px 5px;
+    font-size: small;
+}
+
+div.code-block-caption code {
+    background-color: transparent;
+}
+
+table.highlighttable td.linenos,
+span.linenos,
+div.highlight span.gp {  /* gp: Generic.Prompt */
+  user-select: none;
+  -webkit-user-select: text; /* Safari fallback only */
+  -webkit-user-select: none; /* Chrome/Safari */
+  -moz-user-select: none; /* Firefox */
+  -ms-user-select: none; /* IE10+ */
+}
+
+div.code-block-caption span.caption-number {
+    padding: 0.1em 0.3em;
+    font-style: italic;
+}
+
+div.code-block-caption span.caption-text {
+}
+
+div.literal-block-wrapper {
+    margin: 1em 0;
+}
+
+code.xref, a code {
+    background-color: transparent;
+    font-weight: bold;
+}
+
+h1 code, h2 code, h3 code, h4 code, h5 code, h6 code {
+    background-color: transparent;
+}
+
+.viewcode-link {
+    float: right;
+}
+
+.viewcode-back {
+    float: right;
+    font-family: sans-serif;
+}
+
+div.viewcode-block:target {
+    margin: -1px -10px;
+    padding: 0 10px;
+}
+
+/* -- math display ---------------------------------------------------------- */
+
+img.math {
+    vertical-align: middle;
+}
+
+div.body div.math p {
+    text-align: center;
+}
+
+span.eqno {
+    float: right;
+}
+
+span.eqno a.headerlink {
+    position: absolute;
+    z-index: 1;
+}
+
+div.math:hover a.headerlink {
+    visibility: visible;
+}
+
+/* -- printout stylesheet --------------------------------------------------- */
+
+@media print {
+    div.document,
+    div.documentwrapper,
+    div.bodywrapper {
+        margin: 0 !important;
+        width: 100%;
+    }
+
+    div.sphinxsidebar,
+    div.related,
+    div.footer,
+    #top-link {
+        display: none;
+    }
+}
\ No newline at end of file
diff --git a/psi/docs/_build/html/_static/custom.css b/psi/docs/_build/html/_static/custom.css
new file mode 100644
index 0000000..2a924f1
--- /dev/null
+++ b/psi/docs/_build/html/_static/custom.css
@@ -0,0 +1 @@
+/* This file intentionally left blank. */
diff --git a/psi/docs/_build/html/_static/doctools.js b/psi/docs/_build/html/_static/doctools.js
new file mode 100644
index 0000000..d06a71d
--- /dev/null
+++ b/psi/docs/_build/html/_static/doctools.js
@@ -0,0 +1,156 @@
+/*
+ * doctools.js
+ * ~~~~~~~~~~~
+ *
+ * Base JavaScript utilities for all Sphinx HTML documentation.
+ *
+ * :copyright: Copyright 2007-2023 by the Sphinx team, see AUTHORS.
+ * :license: BSD, see LICENSE for details.
+ *
+ */
+"use strict";
+
+const BLACKLISTED_KEY_CONTROL_ELEMENTS = new Set([
+  "TEXTAREA",
+  "INPUT",
+  "SELECT",
+  "BUTTON",
+]);
+
+const _ready = (callback) => {
+  if (document.readyState !== "loading") {
+    callback();
+  } else {
+    document.addEventListener("DOMContentLoaded", callback);
+  }
+};
+
+/**
+ * Small JavaScript module for the documentation.
+ */
+const Documentation = {
+  init: () => {
+    Documentation.initDomainIndexTable();
+    Documentation.initOnKeyListeners();
+  },
+
+  /**
+   * i18n support
+   */
+  TRANSLATIONS: {},
+  PLURAL_EXPR: (n) => (n === 1 ? 0 : 1),
+  LOCALE: "unknown",
+
+  // gettext and ngettext don't access this so that the functions
+  // can safely bound to a different name (_ = Documentation.gettext)
+  gettext: (string) => {
+    const translated = Documentation.TRANSLATIONS[string];
+    switch (typeof translated) {
+      case "undefined":
+        return string; // no translation
+      case "string":
+        return translated; // translation exists
+      default:
+        return translated[0]; // (singular, plural) translation tuple exists
+    }
+  },
+
+  ngettext: (singular, plural, n) => {
+    const translated = Documentation.TRANSLATIONS[singular];
+    if (typeof translated !== "undefined")
+      return translated[Documentation.PLURAL_EXPR(n)];
+    return n === 1 ? singular : plural;
+  },
+
+  addTranslations: (catalog) => {
+    Object.assign(Documentation.TRANSLATIONS, catalog.messages);
+    Documentation.PLURAL_EXPR = new Function(
+      "n",
+      `return (${catalog.plural_expr})`
+    );
+    Documentation.LOCALE = catalog.locale;
+  },
+
+  /**
+   * helper function to focus on search bar
+   */
+  focusSearchBar: () => {
+    document.querySelectorAll("input[name=q]")[0]?.focus();
+  },
+
+  /**
+   * Initialise the domain index toggle buttons
+   */
+  initDomainIndexTable: () => {
+    const toggler = (el) => {
+      const idNumber = el.id.substr(7);
+      const toggledRows = document.querySelectorAll(`tr.cg-${idNumber}`);
+      if (el.src.substr(-9) === "minus.png") {
+        el.src = `${el.src.substr(0, el.src.length - 9)}plus.png`;
+        toggledRows.forEach((el) => (el.style.display = "none"));
+      } else {
+        el.src = `${el.src.substr(0, el.src.length - 8)}minus.png`;
+        toggledRows.forEach((el) => (el.style.display = ""));
+      }
+    };
+
+    const togglerElements = document.querySelectorAll("img.toggler");
+    togglerElements.forEach((el) =>
+      el.addEventListener("click", (event) => toggler(event.currentTarget))
+    );
+    togglerElements.forEach((el) => (el.style.display = ""));
+    if (DOCUMENTATION_OPTIONS.COLLAPSE_INDEX) togglerElements.forEach(toggler);
+  },
+
+  initOnKeyListeners: () => {
+    // only install a listener if it is really needed
+    if (
+      !DOCUMENTATION_OPTIONS.NAVIGATION_WITH_KEYS &&
+      !DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS
+    )
+      return;
+
+    document.addEventListener("keydown", (event) => {
+      // bail for input elements
+      if (BLACKLISTED_KEY_CONTROL_ELEMENTS.has(document.activeElement.tagName)) return;
+      // bail with special keys
+      if (event.altKey || event.ctrlKey || event.metaKey) return;
+
+      if (!event.shiftKey) {
+        switch (event.key) {
+          case "ArrowLeft":
+            if (!DOCUMENTATION_OPTIONS.NAVIGATION_WITH_KEYS) break;
+
+            const prevLink = document.querySelector('link[rel="prev"]');
+            if (prevLink && prevLink.href) {
+              window.location.href = prevLink.href;
+              event.preventDefault();
+            }
+            break;
+          case "ArrowRight":
+            if (!DOCUMENTATION_OPTIONS.NAVIGATION_WITH_KEYS) break;
+
+            const nextLink = document.querySelector('link[rel="next"]');
+            if (nextLink && nextLink.href) {
+              window.location.href = nextLink.href;
+              event.preventDefault();
+            }
+            break;
+        }
+      }
+
+      // some keyboard layouts may need Shift to get /
+      switch (event.key) {
+        case "/":
+          if (!DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS) break;
+          Documentation.focusSearchBar();
+          event.preventDefault();
+      }
+    });
+  },
+};
+
+// quick alias for translations
+const _ = Documentation.gettext;
+
+_ready(Documentation.init);
diff --git a/psi/docs/_build/html/_static/documentation_options.js b/psi/docs/_build/html/_static/documentation_options.js
new file mode 100644
index 0000000..b57ae3b
--- /dev/null
+++ b/psi/docs/_build/html/_static/documentation_options.js
@@ -0,0 +1,14 @@
+var DOCUMENTATION_OPTIONS = {
+    URL_ROOT: document.getElementById("documentation_options").getAttribute('data-url_root'),
+    VERSION: '',
+    LANGUAGE: 'en',
+    COLLAPSE_INDEX: false,
+    BUILDER: 'html',
+    FILE_SUFFIX: '.html',
+    LINK_SUFFIX: '.html',
+    HAS_SOURCE: true,
+    SOURCELINK_SUFFIX: '.txt',
+    NAVIGATION_WITH_KEYS: false,
+    SHOW_SEARCH_SUMMARY: true,
+    ENABLE_SEARCH_SHORTCUTS: true,
+};
\ No newline at end of file
diff --git a/psi/docs/_build/html/_static/file.png b/psi/docs/_build/html/_static/file.png
new file mode 100644
index 0000000..a858a41
--- /dev/null
+++ b/psi/docs/_build/html/_static/file.png
diff --git a/psi/docs/_build/html/_static/language_data.js b/psi/docs/_build/html/_static/language_data.js
new file mode 100644
index 0000000..250f566
--- /dev/null
+++ b/psi/docs/_build/html/_static/language_data.js
@@ -0,0 +1,199 @@
+/*
+ * language_data.js
+ * ~~~~~~~~~~~~~~~~
+ *
+ * This script contains the language-specific data used by searchtools.js,
+ * namely the list of stopwords, stemmer, scorer and splitter.
+ *
+ * :copyright: Copyright 2007-2023 by the Sphinx team, see AUTHORS.
+ * :license: BSD, see LICENSE for details.
+ *
+ */
+
+var stopwords = ["a", "and", "are", "as", "at", "be", "but", "by", "for", "if", "in", "into", "is", "it", "near", "no", "not", "of", "on", "or", "such", "that", "the", "their", "then", "there", "these", "they", "this", "to", "was", "will", "with"];
+
+
+/* Non-minified version is copied as a separate JS file, is available */
+
+/**
+ * Porter Stemmer
+ */
+var Stemmer = function() {
+
+  var step2list = {
+    ational: 'ate',
+    tional: 'tion',
+    enci: 'ence',
+    anci: 'ance',
+    izer: 'ize',
+    bli: 'ble',
+    alli: 'al',
+    entli: 'ent',
+    eli: 'e',
+    ousli: 'ous',
+    ization: 'ize',
+    ation: 'ate',
+    ator: 'ate',
+    alism: 'al',
+    iveness: 'ive',
+    fulness: 'ful',
+    ousness: 'ous',
+    aliti: 'al',
+    iviti: 'ive',
+    biliti: 'ble',
+    logi: 'log'
+  };
+
+  var step3list = {
+    icate: 'ic',
+    ative: '',
+    alize: 'al',
+    iciti: 'ic',
+    ical: 'ic',
+    ful: '',
+    ness: ''
+  };
+
+  var c = "[^aeiou]";          // consonant
+  var v = "[aeiouy]";          // vowel
+  var C = c + "[^aeiouy]*";    // consonant sequence
+  var V = v + "[aeiou]*";      // vowel sequence
+
+  var mgr0 = "^(" + C + ")?" + V + C;                      // [C]VC... is m>0
+  var meq1 = "^(" + C + ")?" + V + C + "(" + V + ")?$";    // [C]VC[V] is m=1
+  var mgr1 = "^(" + C + ")?" + V + C + V + C;              // [C]VCVC... is m>1
+  var s_v   = "^(" + C + ")?" + v;                         // vowel in stem
+
+  this.stemWord = function (w) {
+    var stem;
+    var suffix;
+    var firstch;
+    var origword = w;
+
+    if (w.length < 3)
+      return w;
+
+    var re;
+    var re2;
+    var re3;
+    var re4;
+
+    firstch = w.substr(0,1);
+    if (firstch == "y")
+      w = firstch.toUpperCase() + w.substr(1);
+
+    // Step 1a
+    re = /^(.+?)(ss|i)es$/;
+    re2 = /^(.+?)([^s])s$/;
+
+    if (re.test(w))
+      w = w.replace(re,"$1$2");
+    else if (re2.test(w))
+      w = w.replace(re2,"$1$2");
+
+    // Step 1b
+    re = /^(.+?)eed$/;
+    re2 = /^(.+?)(ed|ing)$/;
+    if (re.test(w)) {
+      var fp = re.exec(w);
+      re = new RegExp(mgr0);
+      if (re.test(fp[1])) {
+        re = /.$/;
+        w = w.replace(re,"");
+      }
+    }
+    else if (re2.test(w)) {
+      var fp = re2.exec(w);
+      stem = fp[1];
+      re2 = new RegExp(s_v);
+      if (re2.test(stem)) {
+        w = stem;
+        re2 = /(at|bl|iz)$/;
+        re3 = new RegExp("([^aeiouylsz])\\1$");
+        re4 = new RegExp("^" + C + v + "[^aeiouwxy]$");
+        if (re2.test(w))
+          w = w + "e";
+        else if (re3.test(w)) {
+          re = /.$/;
+          w = w.replace(re,"");
+        }
+        else if (re4.test(w))
+          w = w + "e";
+      }
+    }
+
+    // Step 1c
+    re = /^(.+?)y$/;
+    if (re.test(w)) {
+      var fp = re.exec(w);
+      stem = fp[1];
+      re = new RegExp(s_v);
+      if (re.test(stem))
+        w = stem + "i";
+    }
+
+    // Step 2
+    re = /^(.+?)(ational|tional|enci|anci|izer|bli|alli|entli|eli|ousli|ization|ation|ator|alism|iveness|fulness|ousness|aliti|iviti|biliti|logi)$/;
+    if (re.test(w)) {
+      var fp = re.exec(w);
+      stem = fp[1];
+      suffix = fp[2];
+      re = new RegExp(mgr0);
+      if (re.test(stem))
+        w = stem + step2list[suffix];
+    }
+
+    // Step 3
+    re = /^(.+?)(icate|ative|alize|iciti|ical|ful|ness)$/;
+    if (re.test(w)) {
+      var fp = re.exec(w);
+      stem = fp[1];
+      suffix = fp[2];
+      re = new RegExp(mgr0);
+      if (re.test(stem))
+        w = stem + step3list[suffix];
+    }
+
+    // Step 4
+    re = /^(.+?)(al|ance|ence|er|ic|able|ible|ant|ement|ment|ent|ou|ism|ate|iti|ous|ive|ize)$/;
+    re2 = /^(.+?)(s|t)(ion)$/;
+    if (re.test(w)) {
+      var fp = re.exec(w);
+      stem = fp[1];
+      re = new RegExp(mgr1);
+      if (re.test(stem))
+        w = stem;
+    }
+    else if (re2.test(w)) {
+      var fp = re2.exec(w);
+      stem = fp[1] + fp[2];
+      re2 = new RegExp(mgr1);
+      if (re2.test(stem))
+        w = stem;
+    }
+
+    // Step 5
+    re = /^(.+?)e$/;
+    if (re.test(w)) {
+      var fp = re.exec(w);
+      stem = fp[1];
+      re = new RegExp(mgr1);
+      re2 = new RegExp(meq1);
+      re3 = new RegExp("^" + C + v + "[^aeiouwxy]$");
+      if (re.test(stem) || (re2.test(stem) && !(re3.test(stem))))
+        w = stem;
+    }
+    re = /ll$/;
+    re2 = new RegExp(mgr1);
+    if (re.test(w) && re2.test(w)) {
+      re = /.$/;
+      w = w.replace(re,"");
+    }
+
+    // and turn initial Y back to y
+    if (firstch == "y")
+      w = firstch.toLowerCase() + w.substr(1);
+    return w;
+  }
+}
+
diff --git a/psi/docs/_build/html/_static/minus.png b/psi/docs/_build/html/_static/minus.png
new file mode 100644
index 0000000..d96755f
--- /dev/null
+++ b/psi/docs/_build/html/_static/minus.png
diff --git a/psi/docs/_build/html/_static/plus.png b/psi/docs/_build/html/_static/plus.png
new file mode 100644
index 0000000..7107cec
--- /dev/null
+++ b/psi/docs/_build/html/_static/plus.png
diff --git a/psi/docs/_build/html/_static/pygments.css b/psi/docs/_build/html/_static/pygments.css
new file mode 100644
index 0000000..9abe04b
--- /dev/null
+++ b/psi/docs/_build/html/_static/pygments.css
@@ -0,0 +1,83 @@
+pre { line-height: 125%; }
+td.linenos .normal { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; }
+span.linenos { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; }
+td.linenos .special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; }
+span.linenos.special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; }
+.highlight .hll { background-color: #ffffcc }
+.highlight { background: #f8f8f8; }
+.highlight .c { color: #8f5902; font-style: italic } /* Comment */
+.highlight .err { color: #a40000; border: 1px solid #ef2929 } /* Error */
+.highlight .g { color: #000000 } /* Generic */
+.highlight .k { color: #004461; font-weight: bold } /* Keyword */
+.highlight .l { color: #000000 } /* Literal */
+.highlight .n { color: #000000 } /* Name */
+.highlight .o { color: #582800 } /* Operator */
+.highlight .x { color: #000000 } /* Other */
+.highlight .p { color: #000000; font-weight: bold } /* Punctuation */
+.highlight .ch { color: #8f5902; font-style: italic } /* Comment.Hashbang */
+.highlight .cm { color: #8f5902; font-style: italic } /* Comment.Multiline */
+.highlight .cp { color: #8f5902 } /* Comment.Preproc */
+.highlight .cpf { color: #8f5902; font-style: italic } /* Comment.PreprocFile */
+.highlight .c1 { color: #8f5902; font-style: italic } /* Comment.Single */
+.highlight .cs { color: #8f5902; font-style: italic } /* Comment.Special */
+.highlight .gd { color: #a40000 } /* Generic.Deleted */
+.highlight .ge { color: #000000; font-style: italic } /* Generic.Emph */
+.highlight .gr { color: #ef2929 } /* Generic.Error */
+.highlight .gh { color: #000080; font-weight: bold } /* Generic.Heading */
+.highlight .gi { color: #00A000 } /* Generic.Inserted */
+.highlight .go { color: #888888 } /* Generic.Output */
+.highlight .gp { color: #745334 } /* Generic.Prompt */
+.highlight .gs { color: #000000; font-weight: bold } /* Generic.Strong */
+.highlight .gu { color: #800080; font-weight: bold } /* Generic.Subheading */
+.highlight .gt { color: #a40000; font-weight: bold } /* Generic.Traceback */
+.highlight .kc { color: #004461; font-weight: bold } /* Keyword.Constant */
+.highlight .kd { color: #004461; font-weight: bold } /* Keyword.Declaration */
+.highlight .kn { color: #004461; font-weight: bold } /* Keyword.Namespace */
+.highlight .kp { color: #004461; font-weight: bold } /* Keyword.Pseudo */
+.highlight .kr { color: #004461; font-weight: bold } /* Keyword.Reserved */
+.highlight .kt { color: #004461; font-weight: bold } /* Keyword.Type */
+.highlight .ld { color: #000000 } /* Literal.Date */
+.highlight .m { color: #990000 } /* Literal.Number */
+.highlight .s { color: #4e9a06 } /* Literal.String */
+.highlight .na { color: #c4a000 } /* Name.Attribute */
+.highlight .nb { color: #004461 } /* Name.Builtin */
+.highlight .nc { color: #000000 } /* Name.Class */
+.highlight .no { color: #000000 } /* Name.Constant */
+.highlight .nd { color: #888888 } /* Name.Decorator */
+.highlight .ni { color: #ce5c00 } /* Name.Entity */
+.highlight .ne { color: #cc0000; font-weight: bold } /* Name.Exception */
+.highlight .nf { color: #000000 } /* Name.Function */
+.highlight .nl { color: #f57900 } /* Name.Label */
+.highlight .nn { color: #000000 } /* Name.Namespace */
+.highlight .nx { color: #000000 } /* Name.Other */
+.highlight .py { color: #000000 } /* Name.Property */
+.highlight .nt { color: #004461; font-weight: bold } /* Name.Tag */
+.highlight .nv { color: #000000 } /* Name.Variable */
+.highlight .ow { color: #004461; font-weight: bold } /* Operator.Word */
+.highlight .pm { color: #000000; font-weight: bold } /* Punctuation.Marker */
+.highlight .w { color: #f8f8f8; text-decoration: underline } /* Text.Whitespace */
+.highlight .mb { color: #990000 } /* Literal.Number.Bin */
+.highlight .mf { color: #990000 } /* Literal.Number.Float */
+.highlight .mh { color: #990000 } /* Literal.Number.Hex */
+.highlight .mi { color: #990000 } /* Literal.Number.Integer */
+.highlight .mo { color: #990000 } /* Literal.Number.Oct */
+.highlight .sa { color: #4e9a06 } /* Literal.String.Affix */
+.highlight .sb { color: #4e9a06 } /* Literal.String.Backtick */
+.highlight .sc { color: #4e9a06 } /* Literal.String.Char */
+.highlight .dl { color: #4e9a06 } /* Literal.String.Delimiter */
+.highlight .sd { color: #8f5902; font-style: italic } /* Literal.String.Doc */
+.highlight .s2 { color: #4e9a06 } /* Literal.String.Double */
+.highlight .se { color: #4e9a06 } /* Literal.String.Escape */
+.highlight .sh { color: #4e9a06 } /* Literal.String.Heredoc */
+.highlight .si { color: #4e9a06 } /* Literal.String.Interpol */
+.highlight .sx { color: #4e9a06 } /* Literal.String.Other */
+.highlight .sr { color: #4e9a06 } /* Literal.String.Regex */
+.highlight .s1 { color: #4e9a06 } /* Literal.String.Single */
+.highlight .ss { color: #4e9a06 } /* Literal.String.Symbol */
+.highlight .bp { color: #3465a4 } /* Name.Builtin.Pseudo */
+.highlight .fm { color: #000000 } /* Name.Function.Magic */
+.highlight .vc { color: #000000 } /* Name.Variable.Class */
+.highlight .vg { color: #000000 } /* Name.Variable.Global */
+.highlight .vi { color: #000000 } /* Name.Variable.Instance */
+.highlight .vm { color: #000000 } /* Name.Variable.Magic */
+.highlight .il { color: #990000 } /* Literal.Number.Integer.Long */
\ No newline at end of file
diff --git a/psi/docs/_build/html/_static/searchtools.js b/psi/docs/_build/html/_static/searchtools.js
new file mode 100644
index 0000000..97d56a7
--- /dev/null
+++ b/psi/docs/_build/html/_static/searchtools.js
@@ -0,0 +1,566 @@
+/*
+ * searchtools.js
+ * ~~~~~~~~~~~~~~~~
+ *
+ * Sphinx JavaScript utilities for the full-text search.
+ *
+ * :copyright: Copyright 2007-2023 by the Sphinx team, see AUTHORS.
+ * :license: BSD, see LICENSE for details.
+ *
+ */
+"use strict";
+
+/**
+ * Simple result scoring code.
+ */
+if (typeof Scorer === "undefined") {
+  var Scorer = {
+    // Implement the following function to further tweak the score for each result
+    // The function takes a result array [docname, title, anchor, descr, score, filename]
+    // and returns the new score.
+    /*
+    score: result => {
+      const [docname, title, anchor, descr, score, filename] = result
+      return score
+    },
+    */
+
+    // query matches the full name of an object
+    objNameMatch: 11,
+    // or matches in the last dotted part of the object name
+    objPartialMatch: 6,
+    // Additive scores depending on the priority of the object
+    objPrio: {
+      0: 15, // used to be importantResults
+      1: 5, // used to be objectResults
+      2: -5, // used to be unimportantResults
+    },
+    //  Used when the priority is not in the mapping.
+    objPrioDefault: 0,
+
+    // query found in title
+    title: 15,
+    partialTitle: 7,
+    // query found in terms
+    term: 5,
+    partialTerm: 2,
+  };
+}
+
+const _removeChildren = (element) => {
+  while (element && element.lastChild) element.removeChild(element.lastChild);
+};
+
+/**
+ * See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions#escaping
+ */
+const _escapeRegExp = (string) =>
+  string.replace(/[.*+\-?^${}()|[\]\\]/g, "\\$&"); // $& means the whole matched string
+
+const _displayItem = (item, searchTerms) => {
+  const docBuilder = DOCUMENTATION_OPTIONS.BUILDER;
+  const docUrlRoot = DOCUMENTATION_OPTIONS.URL_ROOT;
+  const docFileSuffix = DOCUMENTATION_OPTIONS.FILE_SUFFIX;
+  const docLinkSuffix = DOCUMENTATION_OPTIONS.LINK_SUFFIX;
+  const showSearchSummary = DOCUMENTATION_OPTIONS.SHOW_SEARCH_SUMMARY;
+
+  const [docName, title, anchor, descr, score, _filename] = item;
+
+  let listItem = document.createElement("li");
+  let requestUrl;
+  let linkUrl;
+  if (docBuilder === "dirhtml") {
+    // dirhtml builder
+    let dirname = docName + "/";
+    if (dirname.match(/\/index\/$/))
+      dirname = dirname.substring(0, dirname.length - 6);
+    else if (dirname === "index/") dirname = "";
+    requestUrl = docUrlRoot + dirname;
+    linkUrl = requestUrl;
+  } else {
+    // normal html builders
+    requestUrl = docUrlRoot + docName + docFileSuffix;
+    linkUrl = docName + docLinkSuffix;
+  }
+  let linkEl = listItem.appendChild(document.createElement("a"));
+  linkEl.href = linkUrl + anchor;
+  linkEl.dataset.score = score;
+  linkEl.innerHTML = title;
+  if (descr)
+    listItem.appendChild(document.createElement("span")).innerHTML =
+      " (" + descr + ")";
+  else if (showSearchSummary)
+    fetch(requestUrl)
+      .then((responseData) => responseData.text())
+      .then((data) => {
+        if (data)
+          listItem.appendChild(
+            Search.makeSearchSummary(data, searchTerms)
+          );
+      });
+  Search.output.appendChild(listItem);
+};
+const _finishSearch = (resultCount) => {
+  Search.stopPulse();
+  Search.title.innerText = _("Search Results");
+  if (!resultCount)
+    Search.status.innerText = Documentation.gettext(
+      "Your search did not match any documents. Please make sure that all words are spelled correctly and that you've selected enough categories."
+    );
+  else
+    Search.status.innerText = _(
+      `Search finished, found ${resultCount} page(s) matching the search query.`
+    );
+};
+const _displayNextItem = (
+  results,
+  resultCount,
+  searchTerms
+) => {
+  // results left, load the summary and display it
+  // this is intended to be dynamic (don't sub resultsCount)
+  if (results.length) {
+    _displayItem(results.pop(), searchTerms);
+    setTimeout(
+      () => _displayNextItem(results, resultCount, searchTerms),
+      5
+    );
+  }
+  // search finished, update title and status message
+  else _finishSearch(resultCount);
+};
+
+/**
+ * Default splitQuery function. Can be overridden in ``sphinx.search`` with a
+ * custom function per language.
+ *
+ * The regular expression works by splitting the string on consecutive characters
+ * that are not Unicode letters, numbers, underscores, or emoji characters.
+ * This is the same as ``\W+`` in Python, preserving the surrogate pair area.
+ */
+if (typeof splitQuery === "undefined") {
+  var splitQuery = (query) => query
+      .split(/[^\p{Letter}\p{Number}_\p{Emoji_Presentation}]+/gu)
+      .filter(term => term)  // remove remaining empty strings
+}
+
+/**
+ * Search Module
+ */
+const Search = {
+  _index: null,
+  _queued_query: null,
+  _pulse_status: -1,
+
+  htmlToText: (htmlString) => {
+    const htmlElement = new DOMParser().parseFromString(htmlString, 'text/html');
+    htmlElement.querySelectorAll(".headerlink").forEach((el) => { el.remove() });
+    const docContent = htmlElement.querySelector('[role="main"]');
+    if (docContent !== undefined) return docContent.textContent;
+    console.warn(
+      "Content block not found. Sphinx search tries to obtain it via '[role=main]'. Could you check your theme or template."
+    );
+    return "";
+  },
+
+  init: () => {
+    const query = new URLSearchParams(window.location.search).get("q");
+    document
+      .querySelectorAll('input[name="q"]')
+      .forEach((el) => (el.value = query));
+    if (query) Search.performSearch(query);
+  },
+
+  loadIndex: (url) =>
+    (document.body.appendChild(document.createElement("script")).src = url),
+
+  setIndex: (index) => {
+    Search._index = index;
+    if (Search._queued_query !== null) {
+      const query = Search._queued_query;
+      Search._queued_query = null;
+      Search.query(query);
+    }
+  },
+
+  hasIndex: () => Search._index !== null,
+
+  deferQuery: (query) => (Search._queued_query = query),
+
+  stopPulse: () => (Search._pulse_status = -1),
+
+  startPulse: () => {
+    if (Search._pulse_status >= 0) return;
+
+    const pulse = () => {
+      Search._pulse_status = (Search._pulse_status + 1) % 4;
+      Search.dots.innerText = ".".repeat(Search._pulse_status);
+      if (Search._pulse_status >= 0) window.setTimeout(pulse, 500);
+    };
+    pulse();
+  },
+
+  /**
+   * perform a search for something (or wait until index is loaded)
+   */
+  performSearch: (query) => {
+    // create the required interface elements
+    const searchText = document.createElement("h2");
+    searchText.textContent = _("Searching");
+    const searchSummary = document.createElement("p");
+    searchSummary.classList.add("search-summary");
+    searchSummary.innerText = "";
+    const searchList = document.createElement("ul");
+    searchList.classList.add("search");
+
+    const out = document.getElementById("search-results");
+    Search.title = out.appendChild(searchText);
+    Search.dots = Search.title.appendChild(document.createElement("span"));
+    Search.status = out.appendChild(searchSummary);
+    Search.output = out.appendChild(searchList);
+
+    const searchProgress = document.getElementById("search-progress");
+    // Some themes don't use the search progress node
+    if (searchProgress) {
+      searchProgress.innerText = _("Preparing search...");
+    }
+    Search.startPulse();
+
+    // index already loaded, the browser was quick!
+    if (Search.hasIndex()) Search.query(query);
+    else Search.deferQuery(query);
+  },
+
+  /**
+   * execute search (requires search index to be loaded)
+   */
+  query: (query) => {
+    const filenames = Search._index.filenames;
+    const docNames = Search._index.docnames;
+    const titles = Search._index.titles;
+    const allTitles = Search._index.alltitles;
+    const indexEntries = Search._index.indexentries;
+
+    // stem the search terms and add them to the correct list
+    const stemmer = new Stemmer();
+    const searchTerms = new Set();
+    const excludedTerms = new Set();
+    const highlightTerms = new Set();
+    const objectTerms = new Set(splitQuery(query.toLowerCase().trim()));
+    splitQuery(query.trim()).forEach((queryTerm) => {
+      const queryTermLower = queryTerm.toLowerCase();
+
+      // maybe skip this "word"
+      // stopwords array is from language_data.js
+      if (
+        stopwords.indexOf(queryTermLower) !== -1 ||
+        queryTerm.match(/^\d+$/)
+      )
+        return;
+
+      // stem the word
+      let word = stemmer.stemWord(queryTermLower);
+      // select the correct list
+      if (word[0] === "-") excludedTerms.add(word.substr(1));
+      else {
+        searchTerms.add(word);
+        highlightTerms.add(queryTermLower);
+      }
+    });
+
+    if (SPHINX_HIGHLIGHT_ENABLED) {  // set in sphinx_highlight.js
+      localStorage.setItem("sphinx_highlight_terms", [...highlightTerms].join(" "))
+    }
+
+    // console.debug("SEARCH: searching for:");
+    // console.info("required: ", [...searchTerms]);
+    // console.info("excluded: ", [...excludedTerms]);
+
+    // array of [docname, title, anchor, descr, score, filename]
+    let results = [];
+    _removeChildren(document.getElementById("search-progress"));
+
+    const queryLower = query.toLowerCase();
+    for (const [title, foundTitles] of Object.entries(allTitles)) {
+      if (title.toLowerCase().includes(queryLower) && (queryLower.length >= title.length/2)) {
+        for (const [file, id] of foundTitles) {
+          let score = Math.round(100 * queryLower.length / title.length)
+          results.push([
+            docNames[file],
+            titles[file] !== title ? `${titles[file]} > ${title}` : title,
+            id !== null ? "#" + id : "",
+            null,
+            score,
+            filenames[file],
+          ]);
+        }
+      }
+    }
+
+    // search for explicit entries in index directives
+    for (const [entry, foundEntries] of Object.entries(indexEntries)) {
+      if (entry.includes(queryLower) && (queryLower.length >= entry.length/2)) {
+        for (const [file, id] of foundEntries) {
+          let score = Math.round(100 * queryLower.length / entry.length)
+          results.push([
+            docNames[file],
+            titles[file],
+            id ? "#" + id : "",
+            null,
+            score,
+            filenames[file],
+          ]);
+        }
+      }
+    }
+
+    // lookup as object
+    objectTerms.forEach((term) =>
+      results.push(...Search.performObjectSearch(term, objectTerms))
+    );
+
+    // lookup as search terms in fulltext
+    results.push(...Search.performTermsSearch(searchTerms, excludedTerms));
+
+    // let the scorer override scores with a custom scoring function
+    if (Scorer.score) results.forEach((item) => (item[4] = Scorer.score(item)));
+
+    // now sort the results by score (in opposite order of appearance, since the
+    // display function below uses pop() to retrieve items) and then
+    // alphabetically
+    results.sort((a, b) => {
+      const leftScore = a[4];
+      const rightScore = b[4];
+      if (leftScore === rightScore) {
+        // same score: sort alphabetically
+        const leftTitle = a[1].toLowerCase();
+        const rightTitle = b[1].toLowerCase();
+        if (leftTitle === rightTitle) return 0;
+        return leftTitle > rightTitle ? -1 : 1; // inverted is intentional
+      }
+      return leftScore > rightScore ? 1 : -1;
+    });
+
+    // remove duplicate search results
+    // note the reversing of results, so that in the case of duplicates, the highest-scoring entry is kept
+    let seen = new Set();
+    results = results.reverse().reduce((acc, result) => {
+      let resultStr = result.slice(0, 4).concat([result[5]]).map(v => String(v)).join(',');
+      if (!seen.has(resultStr)) {
+        acc.push(result);
+        seen.add(resultStr);
+      }
+      return acc;
+    }, []);
+
+    results = results.reverse();
+
+    // for debugging
+    //Search.lastresults = results.slice();  // a copy
+    // console.info("search results:", Search.lastresults);
+
+    // print the results
+    _displayNextItem(results, results.length, searchTerms);
+  },
+
+  /**
+   * search for object names
+   */
+  performObjectSearch: (object, objectTerms) => {
+    const filenames = Search._index.filenames;
+    const docNames = Search._index.docnames;
+    const objects = Search._index.objects;
+    const objNames = Search._index.objnames;
+    const titles = Search._index.titles;
+
+    const results = [];
+
+    const objectSearchCallback = (prefix, match) => {
+      const name = match[4]
+      const fullname = (prefix ? prefix + "." : "") + name;
+      const fullnameLower = fullname.toLowerCase();
+      if (fullnameLower.indexOf(object) < 0) return;
+
+      let score = 0;
+      const parts = fullnameLower.split(".");
+
+      // check for different match types: exact matches of full name or
+      // "last name" (i.e. last dotted part)
+      if (fullnameLower === object || parts.slice(-1)[0] === object)
+        score += Scorer.objNameMatch;
+      else if (parts.slice(-1)[0].indexOf(object) > -1)
+        score += Scorer.objPartialMatch; // matches in last name
+
+      const objName = objNames[match[1]][2];
+      const title = titles[match[0]];
+
+      // If more than one term searched for, we require other words to be
+      // found in the name/title/description
+      const otherTerms = new Set(objectTerms);
+      otherTerms.delete(object);
+      if (otherTerms.size > 0) {
+        const haystack = `${prefix} ${name} ${objName} ${title}`.toLowerCase();
+        if (
+          [...otherTerms].some((otherTerm) => haystack.indexOf(otherTerm) < 0)
+        )
+          return;
+      }
+
+      let anchor = match[3];
+      if (anchor === "") anchor = fullname;
+      else if (anchor === "-") anchor = objNames[match[1]][1] + "-" + fullname;
+
+      const descr = objName + _(", in ") + title;
+
+      // add custom score for some objects according to scorer
+      if (Scorer.objPrio.hasOwnProperty(match[2]))
+        score += Scorer.objPrio[match[2]];
+      else score += Scorer.objPrioDefault;
+
+      results.push([
+        docNames[match[0]],
+        fullname,
+        "#" + anchor,
+        descr,
+        score,
+        filenames[match[0]],
+      ]);
+    };
+    Object.keys(objects).forEach((prefix) =>
+      objects[prefix].forEach((array) =>
+        objectSearchCallback(prefix, array)
+      )
+    );
+    return results;
+  },
+
+  /**
+   * search for full-text terms in the index
+   */
+  performTermsSearch: (searchTerms, excludedTerms) => {
+    // prepare search
+    const terms = Search._index.terms;
+    const titleTerms = Search._index.titleterms;
+    const filenames = Search._index.filenames;
+    const docNames = Search._index.docnames;
+    const titles = Search._index.titles;
+
+    const scoreMap = new Map();
+    const fileMap = new Map();
+
+    // perform the search on the required terms
+    searchTerms.forEach((word) => {
+      const files = [];
+      const arr = [
+        { files: terms[word], score: Scorer.term },
+        { files: titleTerms[word], score: Scorer.title },
+      ];
+      // add support for partial matches
+      if (word.length > 2) {
+        const escapedWord = _escapeRegExp(word);
+        Object.keys(terms).forEach((term) => {
+          if (term.match(escapedWord) && !terms[word])
+            arr.push({ files: terms[term], score: Scorer.partialTerm });
+        });
+        Object.keys(titleTerms).forEach((term) => {
+          if (term.match(escapedWord) && !titleTerms[word])
+            arr.push({ files: titleTerms[word], score: Scorer.partialTitle });
+        });
+      }
+
+      // no match but word was a required one
+      if (arr.every((record) => record.files === undefined)) return;
+
+      // found search word in contents
+      arr.forEach((record) => {
+        if (record.files === undefined) return;
+
+        let recordFiles = record.files;
+        if (recordFiles.length === undefined) recordFiles = [recordFiles];
+        files.push(...recordFiles);
+
+        // set score for the word in each file
+        recordFiles.forEach((file) => {
+          if (!scoreMap.has(file)) scoreMap.set(file, {});
+          scoreMap.get(file)[word] = record.score;
+        });
+      });
+
+      // create the mapping
+      files.forEach((file) => {
+        if (fileMap.has(file) && fileMap.get(file).indexOf(word) === -1)
+          fileMap.get(file).push(word);
+        else fileMap.set(file, [word]);
+      });
+    });
+
+    // now check if the files don't contain excluded terms
+    const results = [];
+    for (const [file, wordList] of fileMap) {
+      // check if all requirements are matched
+
+      // as search terms with length < 3 are discarded
+      const filteredTermCount = [...searchTerms].filter(
+        (term) => term.length > 2
+      ).length;
+      if (
+        wordList.length !== searchTerms.size &&
+        wordList.length !== filteredTermCount
+      )
+        continue;
+
+      // ensure that none of the excluded terms is in the search result
+      if (
+        [...excludedTerms].some(
+          (term) =>
+            terms[term] === file ||
+            titleTerms[term] === file ||
+            (terms[term] || []).includes(file) ||
+            (titleTerms[term] || []).includes(file)
+        )
+      )
+        break;
+
+      // select one (max) score for the file.
+      const score = Math.max(...wordList.map((w) => scoreMap.get(file)[w]));
+      // add result to the result list
+      results.push([
+        docNames[file],
+        titles[file],
+        "",
+        null,
+        score,
+        filenames[file],
+      ]);
+    }
+    return results;
+  },
+
+  /**
+   * helper function to return a node containing the
+   * search summary for a given text. keywords is a list
+   * of stemmed words.
+   */
+  makeSearchSummary: (htmlText, keywords) => {
+    const text = Search.htmlToText(htmlText);
+    if (text === "") return null;
+
+    const textLower = text.toLowerCase();
+    const actualStartPosition = [...keywords]
+      .map((k) => textLower.indexOf(k.toLowerCase()))
+      .filter((i) => i > -1)
+      .slice(-1)[0];
+    const startWithContext = Math.max(actualStartPosition - 120, 0);
+
+    const top = startWithContext === 0 ? "" : "...";
+    const tail = startWithContext + 240 < text.length ? "..." : "";
+
+    let summary = document.createElement("p");
+    summary.classList.add("context");
+    summary.textContent = top + text.substr(startWithContext, 240).trim() + tail;
+
+    return summary;
+  },
+};
+
+_ready(Search.init);
diff --git a/psi/docs/_build/html/_static/sphinx_highlight.js b/psi/docs/_build/html/_static/sphinx_highlight.js
new file mode 100644
index 0000000..aae669d
--- /dev/null
+++ b/psi/docs/_build/html/_static/sphinx_highlight.js
@@ -0,0 +1,144 @@
+/* Highlighting utilities for Sphinx HTML documentation. */
+"use strict";
+
+const SPHINX_HIGHLIGHT_ENABLED = true
+
+/**
+ * highlight a given string on a node by wrapping it in
+ * span elements with the given class name.
+ */
+const _highlight = (node, addItems, text, className) => {
+  if (node.nodeType === Node.TEXT_NODE) {
+    const val = node.nodeValue;
+    const parent = node.parentNode;
+    const pos = val.toLowerCase().indexOf(text);
+    if (
+      pos >= 0 &&
+      !parent.classList.contains(className) &&
+      !parent.classList.contains("nohighlight")
+    ) {
+      let span;
+
+      const closestNode = parent.closest("body, svg, foreignObject");
+      const isInSVG = closestNode && closestNode.matches("svg");
+      if (isInSVG) {
+        span = document.createElementNS("http://www.w3.org/2000/svg", "tspan");
+      } else {
+        span = document.createElement("span");
+        span.classList.add(className);
+      }
+
+      span.appendChild(document.createTextNode(val.substr(pos, text.length)));
+      parent.insertBefore(
+        span,
+        parent.insertBefore(
+          document.createTextNode(val.substr(pos + text.length)),
+          node.nextSibling
+        )
+      );
+      node.nodeValue = val.substr(0, pos);
+
+      if (isInSVG) {
+        const rect = document.createElementNS(
+          "http://www.w3.org/2000/svg",
+          "rect"
+        );
+        const bbox = parent.getBBox();
+        rect.x.baseVal.value = bbox.x;
+        rect.y.baseVal.value = bbox.y;
+        rect.width.baseVal.value = bbox.width;
+        rect.height.baseVal.value = bbox.height;
+        rect.setAttribute("class", className);
+        addItems.push({ parent: parent, target: rect });
+      }
+    }
+  } else if (node.matches && !node.matches("button, select, textarea")) {
+    node.childNodes.forEach((el) => _highlight(el, addItems, text, className));
+  }
+};
+const _highlightText = (thisNode, text, className) => {
+  let addItems = [];
+  _highlight(thisNode, addItems, text, className);
+  addItems.forEach((obj) =>
+    obj.parent.insertAdjacentElement("beforebegin", obj.target)
+  );
+};
+
+/**
+ * Small JavaScript module for the documentation.
+ */
+const SphinxHighlight = {
+
+  /**
+   * highlight the search words provided in localstorage in the text
+   */
+  highlightSearchWords: () => {
+    if (!SPHINX_HIGHLIGHT_ENABLED) return;  // bail if no highlight
+
+    // get and clear terms from localstorage
+    const url = new URL(window.location);
+    const highlight =
+        localStorage.getItem("sphinx_highlight_terms")
+        || url.searchParams.get("highlight")
+        || "";
+    localStorage.removeItem("sphinx_highlight_terms")
+    url.searchParams.delete("highlight");
+    window.history.replaceState({}, "", url);
+
+    // get individual terms from highlight string
+    const terms = highlight.toLowerCase().split(/\s+/).filter(x => x);
+    if (terms.length === 0) return; // nothing to do
+
+    // There should never be more than one element matching "div.body"
+    const divBody = document.querySelectorAll("div.body");
+    const body = divBody.length ? divBody[0] : document.querySelector("body");
+    window.setTimeout(() => {
+      terms.forEach((term) => _highlightText(body, term, "highlighted"));
+    }, 10);
+
+    const searchBox = document.getElementById("searchbox");
+    if (searchBox === null) return;
+    searchBox.appendChild(
+      document
+        .createRange()
+        .createContextualFragment(
+          '<p class="highlight-link">' +
+            '<a href="javascript:SphinxHighlight.hideSearchWords()">' +
+            _("Hide Search Matches") +
+            "</a></p>"
+        )
+    );
+  },
+
+  /**
+   * helper function to hide the search marks again
+   */
+  hideSearchWords: () => {
+    document
+      .querySelectorAll("#searchbox .highlight-link")
+      .forEach((el) => el.remove());
+    document
+      .querySelectorAll("span.highlighted")
+      .forEach((el) => el.classList.remove("highlighted"));
+    localStorage.removeItem("sphinx_highlight_terms")
+  },
+
+  initEscapeListener: () => {
+    // only install a listener if it is really needed
+    if (!DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS) return;
+
+    document.addEventListener("keydown", (event) => {
+      // bail for input elements
+      if (BLACKLISTED_KEY_CONTROL_ELEMENTS.has(document.activeElement.tagName)) return;
+      // bail with special keys
+      if (event.shiftKey || event.altKey || event.ctrlKey || event.metaKey) return;
+      if (DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS && (event.key === "Escape")) {
+        SphinxHighlight.hideSearchWords();
+        event.preventDefault();
+      }
+    });
+  },
+};
+
+_ready(SphinxHighlight.highlightSearchWords);
+_ready(SphinxHighlight.initEscapeListener);
diff --git a/psi/docs/_build/html/api/psi.html b/psi/docs/_build/html/api/psi.html
new file mode 100644
index 0000000..b81623a
--- /dev/null
+++ b/psi/docs/_build/html/api/psi.html
@@ -0,0 +1,123 @@
+<!DOCTYPE html>
+
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" /><meta name="viewport" content="width=device-width, initial-scale=1" />
+
+    <title>Psi API Reference &#8212; Python  documentation</title>
+    <link rel="stylesheet" type="text/css" href="../_static/pygments.css" />
+    <link rel="stylesheet" type="text/css" href="../_static/alabaster.css" />
+    <script data-url_root="../" id="documentation_options" src="../_static/documentation_options.js"></script>
+    <script src="../_static/doctools.js"></script>
+    <script src="../_static/sphinx_highlight.js"></script>
+    <link rel="index" title="Index" href="../genindex.html" />
+    <link rel="search" title="Search" href="../search.html" />
+   
+  <link rel="stylesheet" href="../_static/custom.css" type="text/css" />
+  
+  
+  <meta name="viewport" content="width=device-width, initial-scale=0.9, maximum-scale=0.9" />
+
+  </head><body>
+  
+
+    <div class="document">
+      <div class="documentwrapper">
+        <div class="bodywrapper">
+          
+
+          <div class="body" role="main">
+            
+  <section id="module-psi">
+<span id="psi-api-reference"></span><h1>Psi API Reference<a class="headerlink" href="#module-psi" title="Permalink to this heading">¶</a></h1>
+<p>Psi
+&#64;TODO 词法分析器
+&#64;BODY 似乎要写的还蛮多的，所以先写几个TODO List</p>
+<dl class="py class">
+<dt class="sig sig-object py" id="psi.Psi">
+<em class="property"><span class="pre">class</span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">psi.</span></span><span class="sig-name descname"><span class="pre">Psi</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">input</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#psi.Psi" title="Permalink to this definition">¶</a></dt>
+<dd><p>Bases: <code class="xref py py-class docutils literal notranslate"><span class="pre">object</span></code></p>
+<dl class="py method">
+<dt class="sig sig-object py" id="psi.Psi.execute">
+<span class="sig-name descname"><span class="pre">execute</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#psi.Psi.execute" title="Permalink to this definition">¶</a></dt>
+<dd></dd></dl>
+
+<dl class="py method">
+<dt class="sig sig-object py" id="psi.Psi.get_result">
+<span class="sig-name descname"><span class="pre">get_result</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#psi.Psi.get_result" title="Permalink to this definition">¶</a></dt>
+<dd></dd></dl>
+
+<dl class="py method">
+<dt class="sig sig-object py" id="psi.Psi.set_input">
+<span class="sig-name descname"><span class="pre">set_input</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">input</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#psi.Psi.set_input" title="Permalink to this definition">¶</a></dt>
+<dd></dd></dl>
+
+</dd></dl>
+
+</section>
+
+
+          </div>
+          
+        </div>
+      </div>
+      <div class="sphinxsidebar" role="navigation" aria-label="main navigation">
+        <div class="sphinxsidebarwrapper">
+<h1 class="logo"><a href="../index.html">Python</a></h1>
+
+
+
+
+
+
+
+
+<h3>Navigation</h3>
+
+<div class="relations">
+<h3>Related Topics</h3>
+<ul>
+  <li><a href="../index.html">Documentation overview</a><ul>
+  </ul></li>
+</ul>
+</div>
+<div id="searchbox" style="display: none" role="search">
+  <h3 id="searchlabel">Quick search</h3>
+    <div class="searchformwrapper">
+    <form class="search" action="../search.html" method="get">
+      <input type="text" name="q" aria-labelledby="searchlabel" autocomplete="off" autocorrect="off" autocapitalize="off" spellcheck="false"/>
+      <input type="submit" value="Go" />
+    </form>
+    </div>
+</div>
+<script>document.getElementById('searchbox').style.display = "block"</script>
+
+
+
+
+
+
+
+
+        </div>
+      </div>
+      <div class="clearer"></div>
+    </div>
+    <div class="footer">
+      &copy;.
+      
+      |
+      Powered by <a href="http://sphinx-doc.org/">Sphinx 7.0.1</a>
+      &amp; <a href="https://github.com/bitprophet/alabaster">Alabaster 0.7.13</a>
+      
+      |
+      <a href="../_sources/api/psi.rst.txt"
+          rel="nofollow">Page source</a>
+    </div>
+
+    
+
+    
+  </body>
+</html>
\ No newline at end of file
diff --git a/psi/docs/_build/html/genindex.html b/psi/docs/_build/html/genindex.html
new file mode 100644
index 0000000..94a31bf
--- /dev/null
+++ b/psi/docs/_build/html/genindex.html
@@ -0,0 +1,157 @@
+<!DOCTYPE html>
+
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Index &#8212; Python  documentation</title>
+    <link rel="stylesheet" type="text/css" href="_static/pygments.css" />
+    <link rel="stylesheet" type="text/css" href="_static/alabaster.css" />
+    <script data-url_root="./" id="documentation_options" src="_static/documentation_options.js"></script>
+    <script src="_static/doctools.js"></script>
+    <script src="_static/sphinx_highlight.js"></script>
+    <link rel="index" title="Index" href="#" />
+    <link rel="search" title="Search" href="search.html" />
+   
+  <link rel="stylesheet" href="_static/custom.css" type="text/css" />
+  
+  
+  <meta name="viewport" content="width=device-width, initial-scale=0.9, maximum-scale=0.9" />
+
+  </head><body>
+  
+
+    <div class="document">
+      <div class="documentwrapper">
+        <div class="bodywrapper">
+          
+
+          <div class="body" role="main">
+            
+
+<h1 id="index">Index</h1>
+
+<div class="genindex-jumpbox">
+ <a href="#E"><strong>E</strong></a>
+ | <a href="#G"><strong>G</strong></a>
+ | <a href="#M"><strong>M</strong></a>
+ | <a href="#P"><strong>P</strong></a>
+ | <a href="#S"><strong>S</strong></a>
+ 
+</div>
+<h2 id="E">E</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+  <td style="width: 33%; vertical-align: top;"><ul>
+      <li><a href="api/psi.html#psi.Psi.execute">execute() (psi.Psi method)</a>
+</li>
+  </ul></td>
+</tr></table>
+
+<h2 id="G">G</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+  <td style="width: 33%; vertical-align: top;"><ul>
+      <li><a href="api/psi.html#psi.Psi.get_result">get_result() (psi.Psi method)</a>
+</li>
+  </ul></td>
+</tr></table>
+
+<h2 id="M">M</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+  <td style="width: 33%; vertical-align: top;"><ul>
+      <li>
+    module
+
+      <ul>
+        <li><a href="api/psi.html#module-psi">psi</a>
+</li>
+      </ul></li>
+  </ul></td>
+</tr></table>
+
+<h2 id="P">P</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+  <td style="width: 33%; vertical-align: top;"><ul>
+      <li>
+    psi
+
+      <ul>
+        <li><a href="api/psi.html#module-psi">module</a>
+</li>
+      </ul></li>
+  </ul></td>
+  <td style="width: 33%; vertical-align: top;"><ul>
+      <li><a href="api/psi.html#psi.Psi">Psi (class in psi)</a>
+</li>
+  </ul></td>
+</tr></table>
+
+<h2 id="S">S</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+  <td style="width: 33%; vertical-align: top;"><ul>
+      <li><a href="api/psi.html#psi.Psi.set_input">set_input() (psi.Psi method)</a>
+</li>
+  </ul></td>
+</tr></table>
+
+
+
+          </div>
+          
+        </div>
+      </div>
+      <div class="sphinxsidebar" role="navigation" aria-label="main navigation">
+        <div class="sphinxsidebarwrapper">
+<h1 class="logo"><a href="index.html">Python</a></h1>
+
+
+
+
+
+
+
+
+<h3>Navigation</h3>
+
+<div class="relations">
+<h3>Related Topics</h3>
+<ul>
+  <li><a href="index.html">Documentation overview</a><ul>
+  </ul></li>
+</ul>
+</div>
+<div id="searchbox" style="display: none" role="search">
+  <h3 id="searchlabel">Quick search</h3>
+    <div class="searchformwrapper">
+    <form class="search" action="search.html" method="get">
+      <input type="text" name="q" aria-labelledby="searchlabel" autocomplete="off" autocorrect="off" autocapitalize="off" spellcheck="false"/>
+      <input type="submit" value="Go" />
+    </form>
+    </div>
+</div>
+<script>document.getElementById('searchbox').style.display = "block"</script>
+
+
+
+
+
+
+
+
+        </div>
+      </div>
+      <div class="clearer"></div>
+    </div>
+    <div class="footer">
+      &copy;.
+      
+      |
+      Powered by <a href="http://sphinx-doc.org/">Sphinx 7.0.1</a>
+      &amp; <a href="https://github.com/bitprophet/alabaster">Alabaster 0.7.13</a>
+      
+    </div>
+
+    
+
+    
+  </body>
+</html>
\ No newline at end of file
diff --git a/psi/docs/_build/html/index.html b/psi/docs/_build/html/index.html
new file mode 100644
index 0000000..f656e23
--- /dev/null
+++ b/psi/docs/_build/html/index.html
@@ -0,0 +1,98 @@
+<!DOCTYPE html>
+
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" /><meta name="viewport" content="width=device-width, initial-scale=1" />
+
+    <title>&lt;no title&gt; &#8212; Python  documentation</title>
+    <link rel="stylesheet" type="text/css" href="_static/pygments.css" />
+    <link rel="stylesheet" type="text/css" href="_static/alabaster.css" />
+    <script data-url_root="./" id="documentation_options" src="_static/documentation_options.js"></script>
+    <script src="_static/doctools.js"></script>
+    <script src="_static/sphinx_highlight.js"></script>
+    <link rel="index" title="Index" href="genindex.html" />
+    <link rel="search" title="Search" href="search.html" />
+   
+  <link rel="stylesheet" href="_static/custom.css" type="text/css" />
+  
+  
+  <meta name="viewport" content="width=device-width, initial-scale=0.9, maximum-scale=0.9" />
+
+  </head><body>
+  
+
+    <div class="document">
+      <div class="documentwrapper">
+        <div class="bodywrapper">
+          
+
+          <div class="body" role="main">
+            
+  <div class="toctree-wrapper compound">
+</div>
+
+
+          </div>
+          
+        </div>
+      </div>
+      <div class="sphinxsidebar" role="navigation" aria-label="main navigation">
+        <div class="sphinxsidebarwrapper">
+<h1 class="logo"><a href="#">Python</a></h1>
+
+
+
+
+
+
+
+
+<h3>Navigation</h3>
+
+<div class="relations">
+<h3>Related Topics</h3>
+<ul>
+  <li><a href="#">Documentation overview</a><ul>
+  </ul></li>
+</ul>
+</div>
+<div id="searchbox" style="display: none" role="search">
+  <h3 id="searchlabel">Quick search</h3>
+    <div class="searchformwrapper">
+    <form class="search" action="search.html" method="get">
+      <input type="text" name="q" aria-labelledby="searchlabel" autocomplete="off" autocorrect="off" autocapitalize="off" spellcheck="false"/>
+      <input type="submit" value="Go" />
+    </form>
+    </div>
+</div>
+<script>document.getElementById('searchbox').style.display = "block"</script>
+
+
+
+
+
+
+
+
+        </div>
+      </div>
+      <div class="clearer"></div>
+    </div>
+    <div class="footer">
+      &copy;.
+      
+      |
+      Powered by <a href="http://sphinx-doc.org/">Sphinx 7.0.1</a>
+      &amp; <a href="https://github.com/bitprophet/alabaster">Alabaster 0.7.13</a>
+      
+      |
+      <a href="_sources/index.rst.txt"
+          rel="nofollow">Page source</a>
+    </div>
+
+    
+
+    
+  </body>
+</html>
\ No newline at end of file
diff --git a/psi/docs/_build/html/objects.inv b/psi/docs/_build/html/objects.inv
new file mode 100644
index 0000000..1f7c19f
--- /dev/null
+++ b/psi/docs/_build/html/objects.inv
@@ -0,0 +1,6 @@
+# Sphinx inventory version 2
+# Project: Python
+# Version: 
+# The remainder of this file is compressed using zlib.
+xڍ��
+�0E���
��Ƕ��҅P�$&�6�Ф`���i���;�\����o�G�kڐ�f�Y�a�&KJD�e�*+C��1+<��w/bQ�_p�x�j��C����(D��RQ2e����;*8����|+V�`;iH�:v��`}�ع���{�~�K�o�a�Ɖ_�գ팖5��nj�JS�3v.��d�u���
\ No newline at end of file
diff --git a/psi/docs/_build/html/py-modindex.html b/psi/docs/_build/html/py-modindex.html
new file mode 100644
index 0000000..e77ab6a
--- /dev/null
+++ b/psi/docs/_build/html/py-modindex.html
@@ -0,0 +1,116 @@
+<!DOCTYPE html>
+
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Python Module Index &#8212; Python  documentation</title>
+    <link rel="stylesheet" type="text/css" href="_static/pygments.css" />
+    <link rel="stylesheet" type="text/css" href="_static/alabaster.css" />
+    <script data-url_root="./" id="documentation_options" src="_static/documentation_options.js"></script>
+    <script src="_static/doctools.js"></script>
+    <script src="_static/sphinx_highlight.js"></script>
+    <link rel="index" title="Index" href="genindex.html" />
+    <link rel="search" title="Search" href="search.html" />
+
+   
+  <link rel="stylesheet" href="_static/custom.css" type="text/css" />
+  
+  
+  <meta name="viewport" content="width=device-width, initial-scale=0.9, maximum-scale=0.9" />
+
+
+    <script>
+      DOCUMENTATION_OPTIONS.COLLAPSE_INDEX = true;
+    </script>
+
+
+  </head><body>
+  
+
+    <div class="document">
+      <div class="documentwrapper">
+        <div class="bodywrapper">
+          
+
+          <div class="body" role="main">
+            
+
+   <h1>Python Module Index</h1>
+
+   <div class="modindex-jumpbox">
+   <a href="#cap-p"><strong>p</strong></a>
+   </div>
+
+   <table class="indextable modindextable">
+     <tr class="pcap"><td></td><td>&#160;</td><td></td></tr>
+     <tr class="cap" id="cap-p"><td></td><td>
+       <strong>p</strong></td><td></td></tr>
+     <tr>
+       <td></td>
+       <td>
+       <a href="api/psi.html#module-psi"><code class="xref">psi</code></a></td><td>
+       <em></em></td></tr>
+   </table>
+
+
+          </div>
+          
+        </div>
+      </div>
+      <div class="sphinxsidebar" role="navigation" aria-label="main navigation">
+        <div class="sphinxsidebarwrapper">
+<h1 class="logo"><a href="index.html">Python</a></h1>
+
+
+
+
+
+
+
+
+<h3>Navigation</h3>
+
+<div class="relations">
+<h3>Related Topics</h3>
+<ul>
+  <li><a href="index.html">Documentation overview</a><ul>
+  </ul></li>
+</ul>
+</div>
+<div id="searchbox" style="display: none" role="search">
+  <h3 id="searchlabel">Quick search</h3>
+    <div class="searchformwrapper">
+    <form class="search" action="search.html" method="get">
+      <input type="text" name="q" aria-labelledby="searchlabel" autocomplete="off" autocorrect="off" autocapitalize="off" spellcheck="false"/>
+      <input type="submit" value="Go" />
+    </form>
+    </div>
+</div>
+<script>document.getElementById('searchbox').style.display = "block"</script>
+
+
+
+
+
+
+
+
+        </div>
+      </div>
+      <div class="clearer"></div>
+    </div>
+    <div class="footer">
+      &copy;.
+      
+      |
+      Powered by <a href="http://sphinx-doc.org/">Sphinx 7.0.1</a>
+      &amp; <a href="https://github.com/bitprophet/alabaster">Alabaster 0.7.13</a>
+      
+    </div>
+
+    
+
+    
+  </body>
+</html>
\ No newline at end of file
diff --git a/psi/docs/_build/html/search.html b/psi/docs/_build/html/search.html
new file mode 100644
index 0000000..1eee616
--- /dev/null
+++ b/psi/docs/_build/html/search.html
@@ -0,0 +1,117 @@
+<!DOCTYPE html>
+
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Search &#8212; Python  documentation</title>
+    <link rel="stylesheet" type="text/css" href="_static/pygments.css" />
+    <link rel="stylesheet" type="text/css" href="_static/alabaster.css" />
+    
+    <script data-url_root="./" id="documentation_options" src="_static/documentation_options.js"></script>
+    <script src="_static/doctools.js"></script>
+    <script src="_static/sphinx_highlight.js"></script>
+    <script src="_static/searchtools.js"></script>
+    <script src="_static/language_data.js"></script>
+    <link rel="index" title="Index" href="genindex.html" />
+    <link rel="search" title="Search" href="#" />
+  <script src="searchindex.js" defer></script>
+  
+   
+  <link rel="stylesheet" href="_static/custom.css" type="text/css" />
+  
+  
+  <meta name="viewport" content="width=device-width, initial-scale=0.9, maximum-scale=0.9" />
+
+
+  </head><body>
+  
+
+    <div class="document">
+      <div class="documentwrapper">
+        <div class="bodywrapper">
+          
+
+          <div class="body" role="main">
+            
+  <h1 id="search-documentation">Search</h1>
+  
+  <noscript>
+  <div class="admonition warning">
+  <p>
+    Please activate JavaScript to enable the search
+    functionality.
+  </p>
+  </div>
+  </noscript>
+  
+  
+  <p>
+    Searching for multiple words only shows matches that contain
+    all words.
+  </p>
+  
+  
+  <form action="" method="get">
+    <input type="text" name="q" aria-labelledby="search-documentation" value="" autocomplete="off" autocorrect="off" autocapitalize="off" spellcheck="false"/>
+    <input type="submit" value="search" />
+    <span id="search-progress" style="padding-left: 10px"></span>
+  </form>
+  
+  
+  
+  <div id="search-results">
+  
+  </div>
+  
+
+          </div>
+          
+        </div>
+      </div>
+      <div class="sphinxsidebar" role="navigation" aria-label="main navigation">
+        <div class="sphinxsidebarwrapper">
+<h1 class="logo"><a href="index.html">Python</a></h1>
+
+
+
+
+
+
+
+
+<h3>Navigation</h3>
+
+<div class="relations">
+<h3>Related Topics</h3>
+<ul>
+  <li><a href="index.html">Documentation overview</a><ul>
+  </ul></li>
+</ul>
+</div>
+
+
+
+
+
+
+
+
+        </div>
+      </div>
+      <div class="clearer"></div>
+    </div>
+    <div class="footer">
+      &copy;.
+      
+      |
+      Powered by <a href="http://sphinx-doc.org/">Sphinx 7.0.1</a>
+      &amp; <a href="https://github.com/bitprophet/alabaster">Alabaster 0.7.13</a>
+      
+    </div>
+
+    
+
+    
+  </body>
+</html>
\ No newline at end of file
diff --git a/psi/docs/_build/html/searchindex.js b/psi/docs/_build/html/searchindex.js
new file mode 100644
index 0000000..c7ff1e2
--- /dev/null
+++ b/psi/docs/_build/html/searchindex.js
@@ -0,0 +1 @@
+Search.setIndex({"docnames": ["api/psi", "index"], "filenames": ["api\\psi.rst", "index.rst"], "titles": ["Psi API Reference", "&lt;no title&gt;"], "terms": {"todo": 0, "\u8bcd\u6cd5\u5206\u6790\u5668": 0, "bodi": 0, "\u4f3c\u4e4e\u8981\u5199\u7684\u8fd8\u86ee\u591a\u7684": 0, "\u6240\u4ee5\u5148\u5199\u51e0\u4e2atodo": 0, "list": 0, "class": 0, "input": 0, "base": 0, "object": 0, "execut": 0, "get_result": 0, "set_input": 0}, "objects": {"": [[0, 0, 0, "-", "psi"]], "psi": [[0, 1, 1, "", "Psi"]], "psi.Psi": [[0, 2, 1, "", "execute"], [0, 2, 1, "", "get_result"], [0, 2, 1, "", "set_input"]]}, "objtypes": {"0": "py:module", "1": "py:class", "2": "py:method"}, "objnames": {"0": ["py", "module", "Python module"], "1": ["py", "class", "Python class"], "2": ["py", "method", "Python method"]}, "titleterms": {"psi": 0, "api": 0, "refer": 0}, "envversion": {"sphinx.domains.c": 2, "sphinx.domains.changeset": 1, "sphinx.domains.citation": 1, "sphinx.domains.cpp": 8, "sphinx.domains.index": 1, "sphinx.domains.javascript": 2, "sphinx.domains.math": 2, "sphinx.domains.python": 3, "sphinx.domains.rst": 2, "sphinx.domains.std": 2, "sphinx": 57}, "alltitles": {"Psi API Reference": [[0, "module-psi"]]}, "indexentries": {}})
\ No newline at end of file
diff --git a/psi/docs/api/psi.rst b/psi/docs/api/psi.rst
new file mode 100644
index 0000000..8177e9b
--- /dev/null
+++ b/psi/docs/api/psi.rst
@@ -0,0 +1,7 @@
+Psi API Reference
+=================
+
+.. automodule:: psi
+   :members:
+   :undoc-members:
+   :show-inheritance:
diff --git a/psi/docs/conf.py b/psi/docs/conf.py
new file mode 100644
index 0000000..b915874
--- /dev/null
+++ b/psi/docs/conf.py
@@ -0,0 +1,7 @@
+"""
+@TODO Sphinx配置添加站点基本信息
+"""
+
+extensions = [
+    'sphinx.ext.autodoc',
+]
diff --git a/psi/docs/index.rst b/psi/docs/index.rst
new file mode 100644
index 0000000..cb919b0
--- /dev/null
+++ b/psi/docs/index.rst
@@ -0,0 +1,5 @@
+.. toctree::
+   :maxdepth: 2
+   :caption: Modules
+
+   psi/
\ No newline at end of file
diff --git a/psi/execution.py b/psi/execution.py
index 8b13789..052f7ab 100644
--- a/psi/execution.py
+++ b/psi/execution.py
@@ -1 +1,17 @@
+from psi.parsers import Parser
+from psi.interpreter import Interpreter
 
+__all__ = ['Execution']
+
+class Execution:
+    def __init__(self, input):
+        self.input = input
+
+    def execute(self):
+        parser = Parser(self.input)
+        ast = parser.parse()
+
+        interpreter = Interpreter(ast)
+        result = interpreter.interpret()
+
+        return result
diff --git a/psi/interpreter.py b/psi/interpreter.py
index e69de29..f98a777 100644
--- a/psi/interpreter.py
+++ b/psi/interpreter.py
@@ -0,0 +1,26 @@
+from psi.lexer import Token
+
+
+__all__ = ['Interpreter']
+
+class Interpreter:
+    def __init__(self, ast):
+        self.ast = ast
+
+    def interpret(self):
+        return self.interpret_expr(self.ast)
+
+    def interpret_expr(self, node):
+        if isinstance(node, Token):
+            return node.value
+        elif isinstance(node, list):
+            for expr in node:
+                result = self.interpret_expr(expr)
+                if result is not None:
+                    return result
+
+    def interpret_condition(self, node):
+        variable = self.interpret_expr(node[0])
+        value = self.interpret_expr(node[2])
+
+        return variable == value
diff --git a/psi/lexer.py b/psi/lexer.py
index e69de29..2fce0eb 100644
--- a/psi/lexer.py
+++ b/psi/lexer.py
@@ -0,0 +1,153 @@
+"""
+Token and Lexer Documentation
+=============================
+
+This module provides the `Token` and `Lexer` classes for tokenizing input strings.
+
+Token Class
+-----------
+
+The `Token` class represents a token with a type, value, and position in the input string. It is a subclass of the built-in `dict` class.
+
+Attributes:
+- `type` (str): The type of the token.
+- `value` (str or int): The value of the token.
+- `position` (int): The position of the token in the input string.
+
+Methods:
+- `__getattr__(self, name)`: Retrieves the value of an attribute by name. Raises an `AttributeError` if the attribute does not exist.
+
+Lexer Class
+-----------
+
+The `Lexer` class tokenizes an input string using a set of rules.
+
+Attributes:
+- `input` (str): The input string to tokenize.
+- `position` (int): The current position in the input string.
+- `tokens` (list): The list of tokens generated by the lexer.
+
+Methods:
+- `get_next_token(self)`: Retrieves the next token from the input string.
+- `__iter__(self)`: Returns an iterator over the tokens.
+- `__getitem__(self, index)`: Retrieves a token by index.
+- `__len__(self)`: Returns the number of tokens.
+
+Usage Example
+-------------
+
+```python
+lexer = Lexer('''
+@newMessage: {
+    ? message == 1: reply: hi
+    ! reply: no
+}
+''')
+
+token = lexer.get_next_token()
+while token['type'] != 'EOF':
+    print(f'Type: {token["type"]}, Value: {token["value"]}, Position: {token["position"]}')
+    token = lexer.get_next_token()
+
+print("\nAll tokens:")
+print([t['type'] for t in lexer])
+"""
+
+__all__ = ['Token', 'Lexer']
+
+class Token(dict):
+    def __init__(self, type, value, position):
+        super().__init__(type=type, value=value, position=position)
+
+    def __getattr__(self, name):
+        try:
+            return self[name]
+        except KeyError:
+            raise AttributeError(f"'Token' object has no attribute '{name}'")
+
+class Lexer:
+    def __init__(self, input):
+        self.input = input
+        self.position = 0
+        self.tokens = []
+
+    def get_next_token(self):
+        while self.position < len(self.input):
+            current_char = self.input[self.position]
+
+            if current_char.isspace():
+                self.position += 1
+                continue
+
+            if current_char == '#':
+                self.position += 1
+                while (self.position < len(self.input) and
+                       self.input[self.position] != '\n'):
+                    self.position += 1
+                continue
+
+            if current_char == '/' and self.position + 1 < len(self.input) and self.input[self.position + 1] == '*':
+                self.position += 2
+                while (self.position < len(self.input) - 1 and
+                       (self.input[self.position] != '*' or self.input[self.position + 1] != '/')):
+                    self.position += 1
+                if self.position < len(self.input) - 1:
+                    self.position += 2
+                continue
+
+            if current_char.isalpha():
+                start_position = self.position
+                while (self.position < len(self.input) and
+                       self.input[self.position].isalnum()):
+                    self.position += 1
+                token = Token('IDENTIFIER', self.input[start_position:self.position], start_position)
+                self.tokens.append(token)
+                return token
+
+            if current_char.isdigit():
+                start_position = self.position
+                while (self.position < len(self.input) and
+                       self.input[self.position].isdigit()):
+                    self.position += 1
+                token = Token('INTEGER', int(self.input[start_position:self.position]), start_position)
+                self.tokens.append(token)
+                return token
+
+            if current_char in {'<', '>', '=', '!', '&', '|', '@'}:
+                if (self.position + 1 < len(self.input) and
+                    self.input[self.position + 1] in {'=', '&', '|'}):
+                    token = Token('OPERATOR', current_char + self.input[self.position + 1], self.position)
+                    self.position += 2
+                else:
+                    token = Token('OPERATOR', current_char, self.position)
+                    self.position += 1
+                self.tokens.append(token)
+                return token
+
+            if current_char in {'{', '}', '(', ')', '[', ']', ';', ',', '.', ':'}:
+                token = Token('SEPARATOR', current_char, self.position)
+                self.position += 1
+                self.tokens.append(token)
+                return token
+
+            if current_char in {'?', '!', '|'}:
+                token = Token('CONTROL', current_char, self.position)
+                self.position += 1
+                self.tokens.append(token)
+                return token
+
+            self.position += 1
+            raise Exception(f'Unknown character: {current_char}')
+
+        token = Token('EOF', None, self.position)
+        self.tokens.append(token)
+        return token
+
+    def __iter__(self):
+        return iter(self.tokens)
+
+    def __getitem__(self, index):
+        return self.tokens[index]
+
+    def __len__(self):
+        return len(self.tokens)
\ No newline at end of file
diff --git a/psi/parser.py b/psi/parser.py
deleted file mode 100644
index e69de29..0000000
--- a/psi/parser.py
+++ /dev/null
diff --git a/psi/parsers.py b/psi/parsers.py
new file mode 100644
index 0000000..db3e52c
--- /dev/null
+++ b/psi/parsers.py
@@ -0,0 +1,65 @@
+from psi.lexer import Lexer, Token
+
+
+__all__ = ['Parser']
+
+class Parser:
+    def __init__(self, input):
+        self.lexer = Lexer(input)
+        self.tokens = iter(self.lexer)
+        self.current_token = next(self.tokens)
+
+    def parse(self):
+        return self.parse_expr()
+
+    def parse_expr(self):
+        token = self.current_token
+        if token.value == '?':
+            self.eat('?')
+
+            condition = self.parse_condition()
+
+            self.eat(':')
+
+            if condition:
+                result = self.parse_reply()
+            else:
+                result = None
+
+            return result
+
+    def parse_condition(self):
+        variable = self.parse_variable()
+        self.eat('==')
+        value = self.parse_value()
+
+        return variable == value
+
+    def parse_variable(self):
+        token = self.current_token
+        self.eat('IDENTIFIER')
+        return token.value
+
+    def parse_value(self):
+        token = self.current_token
+        if token.type == 'INTEGER':
+            self.eat('INTEGER')
+            return token.value
+        else:
+            raise Exception(f'Invalid value: {token.value}')
+
+    def parse_reply(self):
+        self.eat('reply')
+        self.eat(':')
+
+        token = self.current_token
+        if token.type != 'SEPARATOR':
+            raise Exception(f'Invalid reply: {token.value}')
+
+        return token.value
+
+    def eat(self, expected_type):
+        if self.current_token.type == expected_type:
+            self.current_token = next(self.tokens)
+        else:
+            raise Exception(f'Unexpected token: {self.current_token.value}')
diff --git a/readme.rst b/readme.rst
index 445b680..739daf2 100644
--- a/readme.rst
+++ b/readme.rst
@@ -23,7 +23,7 @@ Features
 - `Documentation Module`_: This module uses reStructuredText and Sphinx to build the documentation, providing API interface descriptions and usage examples.
 
 .. _`Lexer Module`: https://github.com/HydroRoll-Team/psi/blob/main/psi/lexer.py
-.. _`Parser Module`: https://github.com/HydroRoll-Team/psi/blob/main/psi/parser.py
+.. _`Parser Module`: https://github.com/HydroRoll-Team/psi/blob/main/psi/parsers.py
 .. _`Built-in Types Module`: https://github.com/HydroRoll-Team/psi/blob/main/psi/type.py
 .. _`Error Handling Module`: https://github.com/HydroRoll-Team/psi/blob/main/psi/exception.py
 .. _`Execution Environment Module`: https://github.com/HydroRoll-Team/psi/blob/main/psi/execution.py
@@ -67,6 +67,13 @@ Contributing
 
 Contributions to the Psi project are welcome. If you have a feature request, bug report, or proposal for improvement, please open an issue on the project's GitHub page. If you wish to contribute code, please fork the repository and submit a pull request.
 
+How to build docs
+^^^^^^^^^^^^^^^^^
+    
+    git clone https://github.com/HydroRoll-Team/psi.git
+    cd psi/psi/docs
+    sphinx-build -b html . _build/html
+
 License
 -------
 
diff --git a/tests/if-else.py b/tests/if-else.py
new file mode 100644
index 0000000..b557696
--- /dev/null
+++ b/tests/if-else.py
@@ -0,0 +1,11 @@
+"""
+@TODO 包括`tests\if-else.py`在内的各种示例文件的介绍
+"""
+
+from psi import Psi
+
+psi_instance = Psi("? a == 1: reply: 你好")
+print(psi_instance)
+psi_instance.execute()
+result = psi_instance.get_result()
+print(result)
\ No newline at end of file