<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Agda.TypeChecking.InstanceArguments</title><link href="ocean.css" rel="stylesheet" type="text/css" title="Ocean" /><script src="haddock-util.js" type="text/javascript"></script><script type="text/javascript">//<![CDATA[
window.onload = function () {pageLoad();setSynopsis("mini_Agda-TypeChecking-InstanceArguments.html");};
//]]>
</script></head><body><div id="package-header"><ul class="links" id="page-menu"><li><a href="src/Agda-TypeChecking-InstanceArguments.html">Source</a></li><li><a href="index.html">Contents</a></li><li><a href="doc-index.html">Index</a></li></ul><p class="caption">Agda-2.3.2.1: A dependently typed functional programming language and proof assistant</p></div><div id="content"><div id="module-header"><table class="info"><tr><th>Safe Haskell</th><td>None</td></tr></table><p class="caption">Agda.TypeChecking.InstanceArguments</p></div><div id="synopsis"><p id="control.syn" class="caption expander" onclick="toggleSection('syn')">Synopsis</p><ul id="section.syn" class="hide" onclick="toggleSection('syn')"><li class="src short"><a href="#v:initialIFSCandidates">initialIFSCandidates</a> :: <a href="Agda-TypeChecking-Monad-Base.html#t:TCM">TCM</a> [(<a href="Agda-Syntax-Internal.html#t:Term">Term</a>, <a href="Agda-Syntax-Internal.html#t:Type">Type</a>)]</li><li class="src short"><a href="#v:initializeIFSMeta">initializeIFSMeta</a> :: <a href="/usr/share/doc/ghc/html/libraries/base-4.5.1.0/Data-String.html#t:String">String</a> -> <a href="Agda-Syntax-Internal.html#t:Type">Type</a> -> <a href="Agda-TypeChecking-Monad-Base.html#t:TCM">TCM</a> <a href="Agda-Syntax-Internal.html#t:Term">Term</a></li><li class="src short"><a href="#v:findInScope">findInScope</a> :: <a href="Agda-Syntax-Internal.html#t:MetaId">MetaId</a> -> [(<a href="Agda-Syntax-Internal.html#t:Term">Term</a>, <a href="Agda-Syntax-Internal.html#t:Type">Type</a>)] -> <a href="Agda-TypeChecking-Monad-Base.html#t:TCM">TCM</a> <a href="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Tuple.html#t:-40--41-">()</a></li><li class="src short"><a href="#v:findInScope-39-">findInScope'</a> :: <a href="Agda-Syntax-Internal.html#t:MetaId">MetaId</a> -> [(<a href="Agda-Syntax-Internal.html#t:Term">Term</a>, <a href="Agda-Syntax-Internal.html#t:Type">Type</a>)] -> <a href="Agda-TypeChecking-Monad-Base.html#t:TCM">TCM</a> (<a href="/usr/share/doc/ghc/html/libraries/base-4.5.1.0/Data-Maybe.html#t:Maybe">Maybe</a> [(<a href="Agda-Syntax-Internal.html#t:Term">Term</a>, <a href="Agda-Syntax-Internal.html#t:Type">Type</a>)])</li><li class="src short"><a href="#v:getMetaTypeInContext">getMetaTypeInContext</a> :: <a href="Agda-Syntax-Internal.html#t:MetaId">MetaId</a> -> <a href="Agda-TypeChecking-Monad-Base.html#t:TCM">TCM</a> <a href="Agda-Syntax-Internal.html#t:Type">Type</a></li><li class="src short"><a href="#v:checkCandidates">checkCandidates</a> :: <a href="Agda-Syntax-Internal.html#t:MetaId">MetaId</a> -> <a href="Agda-Syntax-Internal.html#t:Type">Type</a> -> [(<a href="Agda-Syntax-Internal.html#t:Term">Term</a>, <a href="Agda-Syntax-Internal.html#t:Type">Type</a>)] -> <a href="Agda-TypeChecking-Monad-Base.html#t:TCM">TCM</a> [(<a href="Agda-Syntax-Internal.html#t:Term">Term</a>, <a href="Agda-Syntax-Internal.html#t:Type">Type</a>)]</li><li class="src short"><a href="#v:applyDroppingParameters">applyDroppingParameters</a> :: <a href="Agda-Syntax-Internal.html#t:Term">Term</a> -> <a href="Agda-Syntax-Internal.html#t:Args">Args</a> -> <a href="Agda-TypeChecking-Monad-Base.html#t:TCM">TCM</a> <a href="Agda-Syntax-Internal.html#t:Term">Term</a></li><li class="src short"><a href="#v:solveIrrelevantMetas">solveIrrelevantMetas</a> :: <a href="Agda-TypeChecking-Monad-Base.html#t:TCM">TCM</a> <a href="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Tuple.html#t:-40--41-">()</a></li><li class="src short"><a href="#v:solveMetaIfIrrelevant">solveMetaIfIrrelevant</a> :: <a href="Agda-Syntax-Internal.html#t:MetaId">MetaId</a> -> <a href="Agda-TypeChecking-Monad-Base.html#t:TCM">TCM</a> <a href="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Tuple.html#t:-40--41-">()</a></li></ul></div><div id="interface"><h1>Documentation</h1><div class="top"><p class="src"><a name="v:initialIFSCandidates" class="def">initialIFSCandidates</a> :: <a href="Agda-TypeChecking-Monad-Base.html#t:TCM">TCM</a> [(<a href="Agda-Syntax-Internal.html#t:Term">Term</a>, <a href="Agda-Syntax-Internal.html#t:Type">Type</a>)]<a href="src/Agda-TypeChecking-InstanceArguments.html#initialIFSCandidates" class="link">Source</a></p></div><div class="top"><p class="src"><a name="v:initializeIFSMeta" class="def">initializeIFSMeta</a> :: <a href="/usr/share/doc/ghc/html/libraries/base-4.5.1.0/Data-String.html#t:String">String</a> -> <a href="Agda-Syntax-Internal.html#t:Type">Type</a> -> <a href="Agda-TypeChecking-Monad-Base.html#t:TCM">TCM</a> <a href="Agda-Syntax-Internal.html#t:Term">Term</a><a href="src/Agda-TypeChecking-InstanceArguments.html#initializeIFSMeta" class="link">Source</a></p><div class="doc"><p><code>initializeIFSMeta s t</code> generates an instance meta of type <code>t</code>
with suggested name <code>s</code>.
</p></div></div><div class="top"><p class="src"><a name="v:findInScope" class="def">findInScope</a> :: <a href="Agda-Syntax-Internal.html#t:MetaId">MetaId</a> -> [(<a href="Agda-Syntax-Internal.html#t:Term">Term</a>, <a href="Agda-Syntax-Internal.html#t:Type">Type</a>)] -> <a href="Agda-TypeChecking-Monad-Base.html#t:TCM">TCM</a> <a href="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Tuple.html#t:-40--41-">()</a><a href="src/Agda-TypeChecking-InstanceArguments.html#findInScope" class="link">Source</a></p><div class="doc"><p><code>findInScope m (v,a)s</code> tries to instantiate on of the types <code>a</code>s
of the candidate terms <code>v</code>s to the type <code>t</code> of the metavariable <code>m</code>.
If successful, meta <code>m</code> is solved with the instantiation of <code>v</code>.
If unsuccessful, the constraint is regenerated, with possibly reduced
candidate set.
</p></div></div><div class="top"><p class="src"><a name="v:findInScope-39-" class="def">findInScope'</a> :: <a href="Agda-Syntax-Internal.html#t:MetaId">MetaId</a> -> [(<a href="Agda-Syntax-Internal.html#t:Term">Term</a>, <a href="Agda-Syntax-Internal.html#t:Type">Type</a>)] -> <a href="Agda-TypeChecking-Monad-Base.html#t:TCM">TCM</a> (<a href="/usr/share/doc/ghc/html/libraries/base-4.5.1.0/Data-Maybe.html#t:Maybe">Maybe</a> [(<a href="Agda-Syntax-Internal.html#t:Term">Term</a>, <a href="Agda-Syntax-Internal.html#t:Type">Type</a>)])<a href="src/Agda-TypeChecking-InstanceArguments.html#findInScope%27" class="link">Source</a></p></div><div class="top"><p class="src"><a name="v:getMetaTypeInContext" class="def">getMetaTypeInContext</a> :: <a href="Agda-Syntax-Internal.html#t:MetaId">MetaId</a> -> <a href="Agda-TypeChecking-Monad-Base.html#t:TCM">TCM</a> <a href="Agda-Syntax-Internal.html#t:Type">Type</a><a href="src/Agda-TypeChecking-InstanceArguments.html#getMetaTypeInContext" class="link">Source</a></p></div><div class="top"><p class="src"><a name="v:checkCandidates" class="def">checkCandidates</a> :: <a href="Agda-Syntax-Internal.html#t:MetaId">MetaId</a> -> <a href="Agda-Syntax-Internal.html#t:Type">Type</a> -> [(<a href="Agda-Syntax-Internal.html#t:Term">Term</a>, <a href="Agda-Syntax-Internal.html#t:Type">Type</a>)] -> <a href="Agda-TypeChecking-Monad-Base.html#t:TCM">TCM</a> [(<a href="Agda-Syntax-Internal.html#t:Term">Term</a>, <a href="Agda-Syntax-Internal.html#t:Type">Type</a>)]<a href="src/Agda-TypeChecking-InstanceArguments.html#checkCandidates" class="link">Source</a></p></div><div class="top"><p class="src"><a name="v:applyDroppingParameters" class="def">applyDroppingParameters</a> :: <a href="Agda-Syntax-Internal.html#t:Term">Term</a> -> <a href="Agda-Syntax-Internal.html#t:Args">Args</a> -> <a href="Agda-TypeChecking-Monad-Base.html#t:TCM">TCM</a> <a href="Agda-Syntax-Internal.html#t:Term">Term</a><a href="src/Agda-TypeChecking-InstanceArguments.html#applyDroppingParameters" class="link">Source</a></p><div class="doc"><p>To preserve the invariant that a constructor is not applied to its
parameter arguments, we explicitly check whether function term
we are applying to arguments is a unapplied constructor.
In this case we drop the first <code><a href="Agda-TypeChecking-Monad-Base.html#v:conPars">conPars</a></code> arguments.
See Issue670a.
</p></div></div><div class="top"><p class="src"><a name="v:solveIrrelevantMetas" class="def">solveIrrelevantMetas</a> :: <a href="Agda-TypeChecking-Monad-Base.html#t:TCM">TCM</a> <a href="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Tuple.html#t:-40--41-">()</a><a href="src/Agda-TypeChecking-InstanceArguments.html#solveIrrelevantMetas" class="link">Source</a></p><div class="doc"><p>Attempt to solve irrelevant metas by instance search.
</p></div></div><div class="top"><p class="src"><a name="v:solveMetaIfIrrelevant" class="def">solveMetaIfIrrelevant</a> :: <a href="Agda-Syntax-Internal.html#t:MetaId">MetaId</a> -> <a href="Agda-TypeChecking-Monad-Base.html#t:TCM">TCM</a> <a href="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Tuple.html#t:-40--41-">()</a><a href="src/Agda-TypeChecking-InstanceArguments.html#solveMetaIfIrrelevant" class="link">Source</a></p></div></div></div><div id="footer"><p>Produced by <a href="http://www.haskell.org/haddock/">Haddock</a> version 2.11.0</p></div></body></html>
