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<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Yojson (yojson.Yojson)</title><meta charset="utf-8"/><link rel="stylesheet" href="../../_odoc-theme/odoc.css"/><meta name="generator" content="odoc 3.0.0"/><meta name="viewport" content="width=device-width,initial-scale=1.0"/><script src="../../highlight.pack.js"></script><script>hljs.initHighlightingOnLoad();</script></head><body class="odoc"><nav class="odoc-nav"><a href="../index.html">Up</a> – <a href="../../index.html">Index</a> » <a href="../index.html">yojson</a> » Yojson</nav><header class="odoc-preamble"><h1>Module <code><span>Yojson</span></code></h1><p>The Yojson library provides several types for representing JSON values, with different use cases.</p><ul><li>The <a href="#basic" title="basic">Basic</a> JSON type,</li><li>The <a href="#safe" title="safe">Safe</a> JSON type, a superset of JSON with safer support for integers,</li><li>The <a href="#raw" title="raw">Raw</a> JSON type, a superset of JSON, safer but less integrated with OCaml types.</li></ul><p>Each of these different types have their own module.</p></header><div class="odoc-tocs"><nav class="odoc-toc odoc-local-toc"><ul><li><a href="#shared-types-and-functions">Shared types and functions</a></li><li><a href="#basic">Basic JSON tree type</a></li><li><a href="#safe">Multipurpose JSON tree type</a></li><li><a href="#json-tree-type-with-literal-int/float/string-leaves">JSON tree type with literal int/float/string leaves</a></li><li><a href="#raw">Supertype of all JSON tree types</a></li></ul></nav></div><div class="odoc-content"><h2 id="shared-types-and-functions"><a href="#shared-types-and-functions" class="anchor"></a>Shared types and functions</h2><div class="odoc-spec"><div class="spec value anchored" id="val-version"><a href="#val-version" class="anchor"></a><code><span><span class="keyword">val</span> version : string</span></code></div></div><div class="odoc-spec"><div class="spec exception anchored" id="exception-Json_error"><a href="#exception-Json_error" class="anchor"></a><code><span><span class="keyword">exception</span> </span><span><span class="exception">Json_error</span> <span class="keyword">of</span> string</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-json_error"><a href="#val-json_error" class="anchor"></a><code><span><span class="keyword">val</span> json_error : <span>string <span class="arrow">-></span></span> <span class="type-var">'a</span></span></code></div></div><div class="odoc-spec"><div class="spec type anchored" id="type-lexer_state"><a href="#type-lexer_state" class="anchor"></a><code><span><span class="keyword">type</span> lexer_state</span><span> = </span><span>{</span></code><ol><li id="type-lexer_state.buf" class="def record field anchored"><a href="#type-lexer_state.buf" class="anchor"></a><code><span>buf : <a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a>;</span></code></li><li id="type-lexer_state.lnum" class="def record field anchored"><a href="#type-lexer_state.lnum" class="anchor"></a><code><span><span class="keyword">mutable</span> lnum : int;</span></code></li><li id="type-lexer_state.bol" class="def record field anchored"><a href="#type-lexer_state.bol" class="anchor"></a><code><span><span class="keyword">mutable</span> bol : int;</span></code></li><li id="type-lexer_state.fname" class="def record field anchored"><a href="#type-lexer_state.fname" class="anchor"></a><code><span><span class="keyword">mutable</span> fname : <span>string option</span>;</span></code></li></ol><code><span>}</span></code></div></div><div class="odoc-spec"><div class="spec module anchored" id="module-Lexer_state"><a href="#module-Lexer_state" class="anchor"></a><code><span><span class="keyword">module</span> <a href="Lexer_state/index.html">Lexer_state</a></span><span> : <span class="keyword">sig</span> ... <span class="keyword">end</span></span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-init_lexer"><a href="#val-init_lexer" class="anchor"></a><code><span><span class="keyword">val</span> init_lexer :
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<span><span class="optlabel">?buf</span>:<a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a> <span class="arrow">-></span></span>
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<span><span class="optlabel">?fname</span>:string <span class="arrow">-></span></span>
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<span><span class="optlabel">?lnum</span>:int <span class="arrow">-></span></span>
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<span>unit <span class="arrow">-></span></span>
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<a href="#type-lexer_state">lexer_state</a></span></code></div></div><div class="odoc-spec"><div class="spec exception anchored" id="exception-End_of_array"><a href="#exception-End_of_array" class="anchor"></a><code><span><span class="keyword">exception</span> </span><span><span class="exception">End_of_array</span></span></code></div></div><div class="odoc-spec"><div class="spec exception anchored" id="exception-End_of_object"><a href="#exception-End_of_object" class="anchor"></a><code><span><span class="keyword">exception</span> </span><span><span class="exception">End_of_object</span></span></code></div></div><div class="odoc-spec"><div class="spec exception anchored" id="exception-End_of_tuple"><a href="#exception-End_of_tuple" class="anchor"></a><code><span><span class="keyword">exception</span> </span><span><span class="exception">End_of_tuple</span></span></code></div></div><div class="odoc-spec"><div class="spec exception anchored" id="exception-End_of_input"><a href="#exception-End_of_input" class="anchor"></a><code><span><span class="keyword">exception</span> </span><span><span class="exception">End_of_input</span></span></code></div></div><div class="odoc-spec"><div class="spec type anchored" id="type-t"><a href="#type-t" class="anchor"></a><code><span><span class="keyword">type</span> t</span><span> = </span><span>[ </span></code><ol><li id="type-t.Assoc" class="def variant constructor anchored"><a href="#type-t.Assoc" class="anchor"></a><code><span>| </span><span>`Assoc <span class="keyword">of</span> <span><span>(string * <a href="#type-t">t</a>)</span> list</span></span></code></li><li id="type-t.Bool" class="def variant constructor anchored"><a href="#type-t.Bool" class="anchor"></a><code><span>| </span><span>`Bool <span class="keyword">of</span> bool</span></code></li><li id="type-t.Float" class="def variant constructor anchored"><a href="#type-t.Float" class="anchor"></a><code><span>| </span><span>`Float <span class="keyword">of</span> float</span></code></li><li id="type-t.Floatlit" class="def variant constructor anchored"><a href="#type-t.Floatlit" class="anchor"></a><code><span>| </span><span>`Floatlit <span class="keyword">of</span> string</span></code></li><li id="type-t.Int" class="def variant constructor anchored"><a href="#type-t.Int" class="anchor"></a><code><span>| </span><span>`Int <span class="keyword">of</span> int</span></code></li><li id="type-t.Intlit" class="def variant constructor anchored"><a href="#type-t.Intlit" class="anchor"></a><code><span>| </span><span>`Intlit <span class="keyword">of</span> string</span></code></li><li id="type-t.List" class="def variant constructor anchored"><a href="#type-t.List" class="anchor"></a><code><span>| </span><span>`List <span class="keyword">of</span> <span><a href="#type-t">t</a> list</span></span></code></li><li id="type-t.Null" class="def variant constructor anchored"><a href="#type-t.Null" class="anchor"></a><code><span>| </span><span>`Null</span></code></li><li id="type-t.String" class="def variant constructor anchored"><a href="#type-t.String" class="anchor"></a><code><span>| </span><span>`String <span class="keyword">of</span> string</span></code></li><li id="type-t.Stringlit" class="def variant constructor anchored"><a href="#type-t.Stringlit" class="anchor"></a><code><span>| </span><span>`Stringlit <span class="keyword">of</span> string</span></code></li><li id="type-t.Tuple" class="def variant constructor anchored"><a href="#type-t.Tuple" class="anchor"></a><code><span>| </span><span>`Tuple <span class="keyword">of</span> <span><a href="#type-t">t</a> list</span></span></code></li><li id="type-t.Variant" class="def variant constructor anchored"><a href="#type-t.Variant" class="anchor"></a><code><span>| </span><span>`Variant <span class="keyword">of</span> string * <span><a href="#type-t">t</a> option</span></span></code></li></ol><code><span> ]</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-pp"><a href="#val-pp" class="anchor"></a><code><span><span class="keyword">val</span> pp : <span><a href="../../ocaml/Stdlib/Format/index.html#type-formatter">Stdlib.Format.formatter</a> <span class="arrow">-></span></span> <span><a href="#type-t">t</a> <span class="arrow">-></span></span> unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-show"><a href="#val-show" class="anchor"></a><code><span><span class="keyword">val</span> show : <span><a href="#type-t">t</a> <span class="arrow">-></span></span> string</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-equal"><a href="#val-equal" class="anchor"></a><code><span><span class="keyword">val</span> equal : <span><a href="#type-t">t</a> <span class="arrow">-></span></span> <span><a href="#type-t">t</a> <span class="arrow">-></span></span> bool</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-to_string"><a href="#val-to_string" class="anchor"></a><code><span><span class="keyword">val</span> to_string :
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<span><span class="optlabel">?buf</span>:<a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a> <span class="arrow">-></span></span>
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<span><span class="optlabel">?len</span>:int <span class="arrow">-></span></span>
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<span><span class="optlabel">?suf</span>:string <span class="arrow">-></span></span>
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<span><span class="optlabel">?std</span>:bool <span class="arrow">-></span></span>
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<span><a href="#type-t">t</a> <span class="arrow">-></span></span>
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string</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-to_channel"><a href="#val-to_channel" class="anchor"></a><code><span><span class="keyword">val</span> to_channel :
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<span><span class="optlabel">?buf</span>:<a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a> <span class="arrow">-></span></span>
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<span><span class="optlabel">?len</span>:int <span class="arrow">-></span></span>
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<span><span class="optlabel">?suf</span>:string <span class="arrow">-></span></span>
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<span><span class="optlabel">?std</span>:bool <span class="arrow">-></span></span>
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<span><a href="../../ocaml/Stdlib/index.html#type-out_channel">Stdlib.out_channel</a> <span class="arrow">-></span></span>
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<span><a href="#type-t">t</a> <span class="arrow">-></span></span>
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unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-to_output"><a href="#val-to_output" class="anchor"></a><code><span><span class="keyword">val</span> to_output :
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<span><span class="optlabel">?buf</span>:<a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a> <span class="arrow">-></span></span>
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<span><span class="optlabel">?len</span>:int <span class="arrow">-></span></span>
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<span><span class="optlabel">?suf</span>:string <span class="arrow">-></span></span>
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<span><span class="optlabel">?std</span>:bool <span class="arrow">-></span></span>
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<span><span>< output : <span>string <span class="arrow">-></span></span> <span>int <span class="arrow">-></span></span> <span>int <span class="arrow">-></span></span> int.. ></span> <span class="arrow">-></span></span>
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<span><a href="#type-t">t</a> <span class="arrow">-></span></span>
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unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-to_file"><a href="#val-to_file" class="anchor"></a><code><span><span class="keyword">val</span> to_file : <span><span class="optlabel">?len</span>:int <span class="arrow">-></span></span> <span><span class="optlabel">?std</span>:bool <span class="arrow">-></span></span> <span><span class="optlabel">?suf</span>:string <span class="arrow">-></span></span> <span>string <span class="arrow">-></span></span> <span><a href="#type-t">t</a> <span class="arrow">-></span></span> unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-to_buffer"><a href="#val-to_buffer" class="anchor"></a><code><span><span class="keyword">val</span> to_buffer : <span><span class="optlabel">?suf</span>:string <span class="arrow">-></span></span> <span><span class="optlabel">?std</span>:bool <span class="arrow">-></span></span> <span><a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a> <span class="arrow">-></span></span> <span><a href="#type-t">t</a> <span class="arrow">-></span></span> unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-seq_to_string"><a href="#val-seq_to_string" class="anchor"></a><code><span><span class="keyword">val</span> seq_to_string :
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<span><span class="optlabel">?buf</span>:<a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a> <span class="arrow">-></span></span>
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<span><span class="optlabel">?len</span>:int <span class="arrow">-></span></span>
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<span><span class="optlabel">?suf</span>:string <span class="arrow">-></span></span>
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<span><span class="optlabel">?std</span>:bool <span class="arrow">-></span></span>
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<span><span><a href="#type-t">t</a> <a href="../../ocaml/Stdlib/Seq/index.html#type-t">Stdlib.Seq.t</a></span> <span class="arrow">-></span></span>
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string</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-seq_to_channel"><a href="#val-seq_to_channel" class="anchor"></a><code><span><span class="keyword">val</span> seq_to_channel :
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<span><span class="optlabel">?buf</span>:<a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a> <span class="arrow">-></span></span>
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<span><span class="optlabel">?len</span>:int <span class="arrow">-></span></span>
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<span><span class="optlabel">?suf</span>:string <span class="arrow">-></span></span>
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<span><span class="optlabel">?std</span>:bool <span class="arrow">-></span></span>
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<span><a href="../../ocaml/Stdlib/index.html#type-out_channel">Stdlib.out_channel</a> <span class="arrow">-></span></span>
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<span><span><a href="#type-t">t</a> <a href="../../ocaml/Stdlib/Seq/index.html#type-t">Stdlib.Seq.t</a></span> <span class="arrow">-></span></span>
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unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-seq_to_file"><a href="#val-seq_to_file" class="anchor"></a><code><span><span class="keyword">val</span> seq_to_file :
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<span><span class="optlabel">?len</span>:int <span class="arrow">-></span></span>
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<span><span class="optlabel">?suf</span>:string <span class="arrow">-></span></span>
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<span><span class="optlabel">?std</span>:bool <span class="arrow">-></span></span>
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<span>string <span class="arrow">-></span></span>
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<span><span><a href="#type-t">t</a> <a href="../../ocaml/Stdlib/Seq/index.html#type-t">Stdlib.Seq.t</a></span> <span class="arrow">-></span></span>
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unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-seq_to_buffer"><a href="#val-seq_to_buffer" class="anchor"></a><code><span><span class="keyword">val</span> seq_to_buffer :
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<span><span class="optlabel">?suf</span>:string <span class="arrow">-></span></span>
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<span><span class="optlabel">?std</span>:bool <span class="arrow">-></span></span>
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<span><a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a> <span class="arrow">-></span></span>
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<span><span><a href="#type-t">t</a> <a href="../../ocaml/Stdlib/Seq/index.html#type-t">Stdlib.Seq.t</a></span> <span class="arrow">-></span></span>
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unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-write_t"><a href="#val-write_t" class="anchor"></a><code><span><span class="keyword">val</span> write_t : <span><a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a> <span class="arrow">-></span></span> <span><a href="#type-t">t</a> <span class="arrow">-></span></span> unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-sort"><a href="#val-sort" class="anchor"></a><code><span><span class="keyword">val</span> sort : <span><a href="#type-t">t</a> <span class="arrow">-></span></span> <a href="#type-t">t</a></span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-write_null"><a href="#val-write_null" class="anchor"></a><code><span><span class="keyword">val</span> write_null : <span><a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a> <span class="arrow">-></span></span> <span>unit <span class="arrow">-></span></span> unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-write_bool"><a href="#val-write_bool" class="anchor"></a><code><span><span class="keyword">val</span> write_bool : <span><a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a> <span class="arrow">-></span></span> <span>bool <span class="arrow">-></span></span> unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-write_int"><a href="#val-write_int" class="anchor"></a><code><span><span class="keyword">val</span> write_int : <span><a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a> <span class="arrow">-></span></span> <span>int <span class="arrow">-></span></span> unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-write_float"><a href="#val-write_float" class="anchor"></a><code><span><span class="keyword">val</span> write_float : <span><a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a> <span class="arrow">-></span></span> <span>float <span class="arrow">-></span></span> unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-write_std_float"><a href="#val-write_std_float" class="anchor"></a><code><span><span class="keyword">val</span> write_std_float : <span><a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a> <span class="arrow">-></span></span> <span>float <span class="arrow">-></span></span> unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-write_float_prec"><a href="#val-write_float_prec" class="anchor"></a><code><span><span class="keyword">val</span> write_float_prec : <span>int <span class="arrow">-></span></span> <span><a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a> <span class="arrow">-></span></span> <span>float <span class="arrow">-></span></span> unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-write_std_float_prec"><a href="#val-write_std_float_prec" class="anchor"></a><code><span><span class="keyword">val</span> write_std_float_prec : <span>int <span class="arrow">-></span></span> <span><a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a> <span class="arrow">-></span></span> <span>float <span class="arrow">-></span></span> unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-write_string"><a href="#val-write_string" class="anchor"></a><code><span><span class="keyword">val</span> write_string : <span><a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a> <span class="arrow">-></span></span> <span>string <span class="arrow">-></span></span> unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-write_intlit"><a href="#val-write_intlit" class="anchor"></a><code><span><span class="keyword">val</span> write_intlit : <span><a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a> <span class="arrow">-></span></span> <span>string <span class="arrow">-></span></span> unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-write_floatlit"><a href="#val-write_floatlit" class="anchor"></a><code><span><span class="keyword">val</span> write_floatlit : <span><a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a> <span class="arrow">-></span></span> <span>string <span class="arrow">-></span></span> unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-write_stringlit"><a href="#val-write_stringlit" class="anchor"></a><code><span><span class="keyword">val</span> write_stringlit : <span><a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a> <span class="arrow">-></span></span> <span>string <span class="arrow">-></span></span> unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-write_assoc"><a href="#val-write_assoc" class="anchor"></a><code><span><span class="keyword">val</span> write_assoc : <span><a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a> <span class="arrow">-></span></span> <span><span><span>(string * <a href="#type-t">t</a>)</span> list</span> <span class="arrow">-></span></span> unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-write_list"><a href="#val-write_list" class="anchor"></a><code><span><span class="keyword">val</span> write_list : <span><a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a> <span class="arrow">-></span></span> <span><span><a href="#type-t">t</a> list</span> <span class="arrow">-></span></span> unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-write_tuple"><a href="#val-write_tuple" class="anchor"></a><code><span><span class="keyword">val</span> write_tuple : <span><a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a> <span class="arrow">-></span></span> <span><span><a href="#type-t">t</a> list</span> <span class="arrow">-></span></span> unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-write_std_tuple"><a href="#val-write_std_tuple" class="anchor"></a><code><span><span class="keyword">val</span> write_std_tuple : <span><a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a> <span class="arrow">-></span></span> <span><span><a href="#type-t">t</a> list</span> <span class="arrow">-></span></span> unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-write_variant"><a href="#val-write_variant" class="anchor"></a><code><span><span class="keyword">val</span> write_variant : <span><a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a> <span class="arrow">-></span></span> <span>string <span class="arrow">-></span></span> <span><span><a href="#type-t">t</a> option</span> <span class="arrow">-></span></span> unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-write_std_variant"><a href="#val-write_std_variant" class="anchor"></a><code><span><span class="keyword">val</span> write_std_variant : <span><a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a> <span class="arrow">-></span></span> <span>string <span class="arrow">-></span></span> <span><span><a href="#type-t">t</a> option</span> <span class="arrow">-></span></span> unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-write_json"><a href="#val-write_json" class="anchor"></a><code><span><span class="keyword">val</span> write_json : <span><a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a> <span class="arrow">-></span></span> <span><a href="#type-t">t</a> <span class="arrow">-></span></span> unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-write_std_json"><a href="#val-write_std_json" class="anchor"></a><code><span><span class="keyword">val</span> write_std_json : <span><a href="../../ocaml/Stdlib/Buffer/index.html#type-t">Stdlib.Buffer.t</a> <span class="arrow">-></span></span> <span><a href="#type-t">t</a> <span class="arrow">-></span></span> unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-pretty_print"><a href="#val-pretty_print" class="anchor"></a><code><span><span class="keyword">val</span> pretty_print : <span><span class="optlabel">?std</span>:bool <span class="arrow">-></span></span> <span><a href="../../ocaml/Stdlib/Format/index.html#type-formatter">Stdlib.Format.formatter</a> <span class="arrow">-></span></span> <span><a href="#type-t">t</a> <span class="arrow">-></span></span> unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-pretty_to_string"><a href="#val-pretty_to_string" class="anchor"></a><code><span><span class="keyword">val</span> pretty_to_string : <span><span class="optlabel">?std</span>:bool <span class="arrow">-></span></span> <span><a href="#type-t">t</a> <span class="arrow">-></span></span> string</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-pretty_to_channel"><a href="#val-pretty_to_channel" class="anchor"></a><code><span><span class="keyword">val</span> pretty_to_channel : <span><span class="optlabel">?std</span>:bool <span class="arrow">-></span></span> <span><a href="../../ocaml/Stdlib/index.html#type-out_channel">Stdlib.out_channel</a> <span class="arrow">-></span></span> <span><a href="#type-t">t</a> <span class="arrow">-></span></span> unit</span></code></div></div><h2 id="basic"><a href="#basic" class="anchor"></a>Basic JSON tree type</h2><div class="odoc-spec"><div class="spec module anchored" id="module-Basic"><a href="#module-Basic" class="anchor"></a><code><span><span class="keyword">module</span> <a href="Basic/index.html">Basic</a></span><span> : <span class="keyword">sig</span> ... <span class="keyword">end</span></span></code></div><div class="spec-doc"><p>This module supports standard JSON nodes only, i.e. no special syntax for variants or tuples as supported by <a href="Safe/index.html"><code>Yojson.Safe</code></a>. Arbitrary integers are not supported as they must all fit within the standard OCaml int type (31 or 63 bits depending on the platform).</p></div></div><h2 id="safe"><a href="#safe" class="anchor"></a>Multipurpose JSON tree type</h2><div class="odoc-spec"><div class="spec module anchored" id="module-Safe"><a href="#module-Safe" class="anchor"></a><code><span><span class="keyword">module</span> <a href="Safe/index.html">Safe</a></span><span> : <span class="keyword">sig</span> ... <span class="keyword">end</span></span></code></div><div class="spec-doc"><p>This module supports a specific syntax for variants and tuples in addition to the standard JSON nodes. Arbitrary integers are supported and represented as a decimal string using <code>`Intlit</code> when they cannot be represented using OCaml's int type (31 or 63 bits depending on the platform).</p></div></div><h2 id="json-tree-type-with-literal-int/float/string-leaves"><a href="#json-tree-type-with-literal-int/float/string-leaves" class="anchor"></a>JSON tree type with literal int/float/string leaves</h2><div class="odoc-spec"><div class="spec module anchored" id="module-Raw"><a href="#module-Raw" class="anchor"></a><code><span><span class="keyword">module</span> <a href="Raw/index.html">Raw</a></span><span> : <span class="keyword">sig</span> ... <span class="keyword">end</span></span></code></div><div class="spec-doc"><p>Ints, floats and strings literals are systematically preserved using <code>`Intlit</code>, <code>`Floatlit</code> and <code>`Stringlit</code>. This module also supports the specific syntax for variants and tuples supported by <a href="Safe/index.html"><code>Yojson.Safe</code></a>.</p></div></div><h2 id="raw"><a href="#raw" class="anchor"></a>Supertype of all JSON tree types</h2></div></body></html>
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