Changes between Version 3 and Version 4 of Commentary/Compiler/HscMain


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Timestamp:
Sep 7, 2006 4:51:58 PM (8 years ago)
Author:
simonpj
Comment:

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  • Commentary/Compiler/HscMain

    v3 v4  
    1111 
    1212 * {{{HsSyn}}} is parameterised over the types of the variables it contains.  The first three passes of the compiler work like this: 
    13    * The '''parser''' produces {{{HsSyn}}} parameterised by [wiki:Commentary/Compiler/RdrNameType {{{RdrName}}}].  To a first approximation, a {{{RdrName}}} is just a string. 
    14    * The '''renamer''' transforms this to {{{HsSyn}}} parameterised by {{{[wiki:Commentary/Compiler/NameType Name]}}}.  To a first appoximation, a {{{Name}}} is a string plus a {{{Unique}}} (number) that uniquely identifies it. 
    15    * The '''typechecker''' transforms this further, to {{{HsSyn}}} parameterised by [wiki:Commentary/Compiler/IdType {{{Id}}}].  To a first approximation, an {{{Id}}} is a {{{Name}}} plus a type. 
     13   * The '''parser''' produces {{{HsSyn}}} parameterised by '''[wiki:Commentary/Compiler/RdrNameType !RdrName]'''.  To a first approximation, a {{{RdrName}}} is just a string. 
     14   * The '''renamer''' transforms this to {{{HsSyn}}} parameterised by '''[wiki:Commentary/Compiler/NameType Name]'''.  To a first appoximation, a {{{Name}}} is a string plus a {{{Unique}}} (number) that uniquely identifies it. 
     15   * The '''typechecker''' transforms this further, to {{{HsSyn}}} parameterised by '''[wiki:Commentary/Compiler/IdType Id]'''.  To a first approximation, an {{{Id}}} is a {{{Name}}} plus a type. 
    1616 These three data types are very important, and have their own pages. 
    1717