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module tlang.compiler.codegen.mapper.hashmapper;
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import tlang.compiler.codegen.mapper.core : SymbolMapper;
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import tlang.compiler.typecheck.core;
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import tlang.compiler.symbols.data;
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public final class HashMapper : SymbolMapper
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{
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this(TypeChecker tc)
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{
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super(tc);
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}
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/**
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* Given an Entity this will generate a unique (but consistent)
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* symbol name for it by taking the md5 hash of the full absolute
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* path to the Entity and finally prefixing it with <code>t_</code>.
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*
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* Params:
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* entityIn = The Entity to generate a hash for
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*
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* Returns: The symbol hash
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*/
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public override string symbolLookup(Entity entityIn)
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{
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// Generate the absolute full path of the Entity
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string absoluteFullPath = tc.getResolver().generateNameBest(entityIn);
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// Hash the absolute path name
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// FIXME: Ensure these hashes are unique (use the smbyol table!)
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import std.digest : toHexString, LetterCase;
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import std.digest.md : md5Of;
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// Generate the name as `_<hexOfAbsPath>`
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string symbolName = toHexString!(LetterCase.lower)(md5Of(absoluteFullPath));
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symbolName="t_"~symbolName;
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return symbolName;
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}
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}
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