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annotate examples/OCaml-Kaleidoscope/Chapter4/ast.ml @ 116:a609e5c42ecc

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change from CGF to this
author mir3636
date Mon, 08 Aug 2016 19:47:00 +0900
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95c75e76d11b LLVM 3.4
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1 (*===----------------------------------------------------------------------===
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2 * Abstract Syntax Tree (aka Parse Tree)
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3 *===----------------------------------------------------------------------===*)
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4
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5 (* expr - Base type for all expression nodes. *)
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6 type expr =
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7 (* variant for numeric literals like "1.0". *)
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8 | Number of float
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9
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10 (* variant for referencing a variable, like "a". *)
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11 | Variable of string
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12
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13 (* variant for a binary operator. *)
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14 | Binary of char * expr * expr
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15
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16 (* variant for function calls. *)
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17 | Call of string * expr array
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18
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19 (* proto - This type represents the "prototype" for a function, which captures
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20 * its name, and its argument names (thus implicitly the number of arguments the
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21 * function takes). *)
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22 type proto = Prototype of string * string array
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23
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24 (* func - This type represents a function definition itself. *)
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25 type func = Function of proto * expr