753 lines
15 KiB
Go
753 lines
15 KiB
Go
//line parser.go.y:2
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package parser
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import __yyfmt__ "fmt"
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//line parser.go.y:2
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import (
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"github.com/mattn/kinako/ast"
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)
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//line parser.go.y:15
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type yySymType struct {
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yys int
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compstmt []ast.Stmt
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stmts []ast.Stmt
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stmt ast.Stmt
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expr ast.Expr
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tok ast.Token
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term ast.Token
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terms ast.Token
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opt_terms ast.Token
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}
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const IDENT = 57346
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const NUMBER = 57347
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const STRING = 57348
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const EQEQ = 57349
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const NEQ = 57350
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const GE = 57351
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const LE = 57352
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const OROR = 57353
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const ANDAND = 57354
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const POW = 57355
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const SHIFTLEFT = 57356
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const SHIFTRIGHT = 57357
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const PLUSPLUS = 57358
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const MINUSMINUS = 57359
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const UNARY = 57360
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var yyToknames = [...]string{
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"$end",
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"error",
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"$unk",
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"IDENT",
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"NUMBER",
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"STRING",
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"EQEQ",
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"NEQ",
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"GE",
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"LE",
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"OROR",
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"ANDAND",
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"POW",
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"'='",
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"'?'",
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"':'",
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"','",
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"'>'",
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"'<'",
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"SHIFTLEFT",
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"SHIFTRIGHT",
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"'+'",
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"'-'",
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"PLUSPLUS",
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"MINUSMINUS",
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"'*'",
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"'/'",
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"'%'",
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"UNARY",
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"'!'",
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"'^'",
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"'('",
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"')'",
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"'|'",
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"'&'",
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"';'",
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"'\\n'",
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}
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var yyStatenames = [...]string{}
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const yyEofCode = 1
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const yyErrCode = 2
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const yyInitialStackSize = 16
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//line parser.go.y:194
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//line yacctab:1
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var yyExca = [...]int{
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-1, 1,
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1, -1,
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-2, 0,
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-1, 49,
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7, 0,
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8, 0,
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-2, 20,
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-1, 50,
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7, 0,
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8, 0,
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-2, 21,
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}
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const yyNprod = 36
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const yyPrivate = 57344
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var yyTokenNames []string
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var yyStates []string
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const yyLast = 249
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var yyAct = [...]int{
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9, 6, 7, 33, 35, 4, 22, 23, 3, 18,
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24, 25, 26, 37, 38, 39, 2, 40, 33, 35,
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17, 42, 43, 44, 45, 46, 47, 48, 49, 50,
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51, 52, 53, 54, 55, 56, 57, 58, 27, 28,
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30, 32, 34, 36, 8, 1, 21, 60, 0, 29,
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31, 0, 0, 22, 23, 5, 0, 24, 25, 26,
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19, 61, 0, 41, 0, 33, 35, 27, 28, 30,
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32, 34, 36, 0, 19, 21, 0, 0, 29, 31,
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0, 0, 22, 23, 0, 0, 24, 25, 26, 0,
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0, 0, 0, 59, 33, 35, 27, 28, 30, 32,
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34, 36, 0, 20, 21, 0, 0, 29, 31, 0,
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0, 22, 23, 0, 0, 24, 25, 26, 0, 0,
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0, 0, 0, 33, 35, 27, 28, 30, 32, 34,
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36, 0, 0, 21, 0, 0, 29, 31, 0, 0,
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22, 23, 0, 0, 24, 25, 26, 0, 0, 0,
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0, 0, 33, 35, 27, 28, 30, 32, 0, 36,
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0, 0, 0, 0, 0, 29, 31, 0, 0, 22,
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23, 0, 0, 24, 25, 26, 27, 28, 30, 32,
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0, 33, 35, 0, 0, 0, 0, 29, 31, 0,
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0, 22, 23, 0, 0, 24, 25, 26, 30, 32,
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10, 11, 15, 33, 35, 0, 0, 29, 31, 0,
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0, 22, 23, 0, 0, 24, 25, 26, 0, 12,
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10, 11, 15, 33, 35, 0, 13, 14, 16, 24,
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25, 26, 6, 7, 0, 0, 0, 33, 35, 12,
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0, 0, 0, 0, 0, 0, 13, 14, 16,
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}
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var yyPact = [...]int{
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-35, -1000, 216, -35, -35, -1000, -1000, -1000, -1000, 89,
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-1000, -1000, 216, 216, 216, -1000, 216, -1000, 196, -1000,
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216, 216, 216, 216, 216, 216, 216, 216, 216, 216,
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216, 216, 216, 216, 216, 216, 216, -31, -31, -31,
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60, -1000, 118, 31, 203, 203, -31, -31, -31, 189,
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189, -16, -16, -16, -16, 118, 147, 118, 169, -1000,
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216, 118,
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}
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var yyPgo = [...]int{
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0, 45, 8, 44, 0, 16, 5, 55,
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}
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var yyR1 = [...]int{
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0, 1, 1, 2, 2, 3, 3, 4, 4, 4,
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4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
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4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
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5, 5, 6, 6, 7, 7,
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}
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var yyR2 = [...]int{
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0, 1, 2, 2, 3, 3, 1, 1, 1, 2,
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2, 2, 1, 5, 3, 3, 3, 3, 3, 3,
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3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
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0, 1, 1, 2, 1, 1,
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}
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var yyChk = [...]int{
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-1000, -1, -5, -2, -6, -7, 36, 37, -3, -4,
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4, 5, 23, 30, 31, 6, 32, -5, -6, -7,
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14, 15, 22, 23, 26, 27, 28, 7, 8, 18,
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9, 19, 10, 34, 11, 35, 12, -4, -4, -4,
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-4, -3, -4, -4, -4, -4, -4, -4, -4, -4,
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-4, -4, -4, -4, -4, -4, -4, -4, -4, 33,
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16, -4,
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}
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var yyDef = [...]int{
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30, -2, 1, 30, 31, 32, 34, 35, 3, 6,
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7, 8, 0, 0, 0, 12, 0, 2, 31, 33,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 9, 10, 11,
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0, 4, 5, 0, 15, 16, 17, 18, 19, -2,
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-2, 22, 23, 24, 25, 26, 27, 28, 29, 14,
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0, 13,
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}
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var yyTok1 = [...]int{
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1, 3, 3, 3, 3, 3, 3, 3, 3, 3,
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37, 3, 3, 3, 3, 3, 3, 3, 3, 3,
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3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
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3, 3, 3, 30, 3, 3, 3, 28, 35, 3,
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32, 33, 26, 22, 17, 23, 3, 27, 3, 3,
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3, 3, 3, 3, 3, 3, 3, 3, 16, 36,
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19, 14, 18, 15, 3, 3, 3, 3, 3, 3,
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3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
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3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
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3, 3, 3, 3, 31, 3, 3, 3, 3, 3,
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3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
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3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
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3, 3, 3, 3, 34,
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}
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var yyTok2 = [...]int{
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2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
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12, 13, 20, 21, 24, 25, 29,
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}
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var yyTok3 = [...]int{
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0,
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}
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var yyErrorMessages = [...]struct {
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state int
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token int
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msg string
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}{}
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//line yaccpar:1
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/* parser for yacc output */
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var (
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yyDebug = 0
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yyErrorVerbose = false
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)
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type yyLexer interface {
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Lex(lval *yySymType) int
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Error(s string)
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}
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type yyParser interface {
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Parse(yyLexer) int
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Lookahead() int
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}
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type yyParserImpl struct {
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lval yySymType
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stack [yyInitialStackSize]yySymType
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char int
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}
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func (p *yyParserImpl) Lookahead() int {
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return p.char
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}
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func yyNewParser() yyParser {
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return &yyParserImpl{}
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}
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const yyFlag = -1000
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func yyTokname(c int) string {
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if c >= 1 && c-1 < len(yyToknames) {
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if yyToknames[c-1] != "" {
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return yyToknames[c-1]
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}
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}
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return __yyfmt__.Sprintf("tok-%v", c)
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}
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func yyStatname(s int) string {
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if s >= 0 && s < len(yyStatenames) {
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if yyStatenames[s] != "" {
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return yyStatenames[s]
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}
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}
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return __yyfmt__.Sprintf("state-%v", s)
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}
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func yyErrorMessage(state, lookAhead int) string {
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const TOKSTART = 4
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if !yyErrorVerbose {
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return "syntax error"
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}
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for _, e := range yyErrorMessages {
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if e.state == state && e.token == lookAhead {
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return "syntax error: " + e.msg
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}
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}
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res := "syntax error: unexpected " + yyTokname(lookAhead)
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// To match Bison, suggest at most four expected tokens.
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expected := make([]int, 0, 4)
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// Look for shiftable tokens.
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base := yyPact[state]
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for tok := TOKSTART; tok-1 < len(yyToknames); tok++ {
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if n := base + tok; n >= 0 && n < yyLast && yyChk[yyAct[n]] == tok {
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if len(expected) == cap(expected) {
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return res
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}
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expected = append(expected, tok)
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}
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}
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if yyDef[state] == -2 {
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i := 0
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for yyExca[i] != -1 || yyExca[i+1] != state {
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i += 2
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}
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// Look for tokens that we accept or reduce.
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for i += 2; yyExca[i] >= 0; i += 2 {
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tok := yyExca[i]
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if tok < TOKSTART || yyExca[i+1] == 0 {
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continue
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}
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if len(expected) == cap(expected) {
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return res
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}
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expected = append(expected, tok)
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}
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// If the default action is to accept or reduce, give up.
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if yyExca[i+1] != 0 {
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return res
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}
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}
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for i, tok := range expected {
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if i == 0 {
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res += ", expecting "
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} else {
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res += " or "
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}
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res += yyTokname(tok)
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}
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return res
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}
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func yylex1(lex yyLexer, lval *yySymType) (char, token int) {
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token = 0
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char = lex.Lex(lval)
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if char <= 0 {
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token = yyTok1[0]
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goto out
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}
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if char < len(yyTok1) {
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token = yyTok1[char]
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goto out
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}
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if char >= yyPrivate {
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if char < yyPrivate+len(yyTok2) {
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token = yyTok2[char-yyPrivate]
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goto out
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}
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}
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for i := 0; i < len(yyTok3); i += 2 {
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token = yyTok3[i+0]
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if token == char {
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token = yyTok3[i+1]
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goto out
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}
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}
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out:
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if token == 0 {
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token = yyTok2[1] /* unknown char */
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}
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if yyDebug >= 3 {
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__yyfmt__.Printf("lex %s(%d)\n", yyTokname(token), uint(char))
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}
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return char, token
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}
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func yyParse(yylex yyLexer) int {
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return yyNewParser().Parse(yylex)
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}
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func (yyrcvr *yyParserImpl) Parse(yylex yyLexer) int {
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var yyn int
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var yyVAL yySymType
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var yyDollar []yySymType
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_ = yyDollar // silence set and not used
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yyS := yyrcvr.stack[:]
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Nerrs := 0 /* number of errors */
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Errflag := 0 /* error recovery flag */
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yystate := 0
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yyrcvr.char = -1
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yytoken := -1 // yyrcvr.char translated into internal numbering
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defer func() {
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// Make sure we report no lookahead when not parsing.
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yystate = -1
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yyrcvr.char = -1
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yytoken = -1
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}()
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yyp := -1
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goto yystack
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ret0:
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return 0
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ret1:
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return 1
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yystack:
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/* put a state and value onto the stack */
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if yyDebug >= 4 {
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__yyfmt__.Printf("char %v in %v\n", yyTokname(yytoken), yyStatname(yystate))
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}
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yyp++
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if yyp >= len(yyS) {
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nyys := make([]yySymType, len(yyS)*2)
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copy(nyys, yyS)
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yyS = nyys
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}
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yyS[yyp] = yyVAL
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yyS[yyp].yys = yystate
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yynewstate:
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yyn = yyPact[yystate]
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if yyn <= yyFlag {
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goto yydefault /* simple state */
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}
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if yyrcvr.char < 0 {
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yyrcvr.char, yytoken = yylex1(yylex, &yyrcvr.lval)
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}
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yyn += yytoken
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if yyn < 0 || yyn >= yyLast {
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goto yydefault
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}
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yyn = yyAct[yyn]
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if yyChk[yyn] == yytoken { /* valid shift */
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yyrcvr.char = -1
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yytoken = -1
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yyVAL = yyrcvr.lval
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yystate = yyn
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if Errflag > 0 {
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Errflag--
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}
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goto yystack
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}
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yydefault:
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/* default state action */
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yyn = yyDef[yystate]
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if yyn == -2 {
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if yyrcvr.char < 0 {
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yyrcvr.char, yytoken = yylex1(yylex, &yyrcvr.lval)
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}
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/* look through exception table */
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xi := 0
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for {
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if yyExca[xi+0] == -1 && yyExca[xi+1] == yystate {
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break
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}
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xi += 2
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}
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for xi += 2; ; xi += 2 {
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yyn = yyExca[xi+0]
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if yyn < 0 || yyn == yytoken {
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break
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}
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}
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yyn = yyExca[xi+1]
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if yyn < 0 {
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goto ret0
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}
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}
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if yyn == 0 {
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/* error ... attempt to resume parsing */
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switch Errflag {
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case 0: /* brand new error */
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yylex.Error(yyErrorMessage(yystate, yytoken))
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Nerrs++
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if yyDebug >= 1 {
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__yyfmt__.Printf("%s", yyStatname(yystate))
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__yyfmt__.Printf(" saw %s\n", yyTokname(yytoken))
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}
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fallthrough
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case 1, 2: /* incompletely recovered error ... try again */
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Errflag = 3
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/* find a state where "error" is a legal shift action */
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for yyp >= 0 {
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yyn = yyPact[yyS[yyp].yys] + yyErrCode
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if yyn >= 0 && yyn < yyLast {
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yystate = yyAct[yyn] /* simulate a shift of "error" */
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if yyChk[yystate] == yyErrCode {
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goto yystack
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}
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}
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/* the current p has no shift on "error", pop stack */
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if yyDebug >= 2 {
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__yyfmt__.Printf("error recovery pops state %d\n", yyS[yyp].yys)
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}
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yyp--
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}
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/* there is no state on the stack with an error shift ... abort */
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goto ret1
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case 3: /* no shift yet; clobber input char */
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if yyDebug >= 2 {
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__yyfmt__.Printf("error recovery discards %s\n", yyTokname(yytoken))
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}
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if yytoken == yyEofCode {
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goto ret1
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}
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yyrcvr.char = -1
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yytoken = -1
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goto yynewstate /* try again in the same state */
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}
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}
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/* reduction by production yyn */
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if yyDebug >= 2 {
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__yyfmt__.Printf("reduce %v in:\n\t%v\n", yyn, yyStatname(yystate))
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}
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yynt := yyn
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yypt := yyp
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_ = yypt // guard against "declared and not used"
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yyp -= yyR2[yyn]
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// yyp is now the index of $0. Perform the default action. Iff the
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// reduced production is ε, $1 is possibly out of range.
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if yyp+1 >= len(yyS) {
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nyys := make([]yySymType, len(yyS)*2)
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copy(nyys, yyS)
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yyS = nyys
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}
|
|
yyVAL = yyS[yyp+1]
|
|
|
|
/* consult goto table to find next state */
|
|
yyn = yyR1[yyn]
|
|
yyg := yyPgo[yyn]
|
|
yyj := yyg + yyS[yyp].yys + 1
|
|
|
|
if yyj >= yyLast {
|
|
yystate = yyAct[yyg]
|
|
} else {
|
|
yystate = yyAct[yyj]
|
|
if yyChk[yystate] != -yyn {
|
|
yystate = yyAct[yyg]
|
|
}
|
|
}
|
|
// dummy call; replaced with literal code
|
|
switch yynt {
|
|
|
|
case 1:
|
|
yyDollar = yyS[yypt-1 : yypt+1]
|
|
//line parser.go.y:43
|
|
{
|
|
yyVAL.compstmt = nil
|
|
}
|
|
case 2:
|
|
yyDollar = yyS[yypt-2 : yypt+1]
|
|
//line parser.go.y:47
|
|
{
|
|
yyVAL.compstmt = yyDollar[1].stmts
|
|
}
|
|
case 3:
|
|
yyDollar = yyS[yypt-2 : yypt+1]
|
|
//line parser.go.y:53
|
|
{
|
|
yyVAL.stmts = []ast.Stmt{yyDollar[2].stmt}
|
|
if l, ok := yylex.(*Lexer); ok {
|
|
l.stmts = yyVAL.stmts
|
|
}
|
|
}
|
|
case 4:
|
|
yyDollar = yyS[yypt-3 : yypt+1]
|
|
//line parser.go.y:60
|
|
{
|
|
if yyDollar[3].stmt != nil {
|
|
yyVAL.stmts = append(yyDollar[1].stmts, yyDollar[3].stmt)
|
|
if l, ok := yylex.(*Lexer); ok {
|
|
l.stmts = yyVAL.stmts
|
|
}
|
|
}
|
|
}
|
|
case 5:
|
|
yyDollar = yyS[yypt-3 : yypt+1]
|
|
//line parser.go.y:71
|
|
{
|
|
yyVAL.stmt = &ast.LetStmt{Lhs: yyDollar[1].expr, Operator: "=", Rhs: yyDollar[3].expr}
|
|
}
|
|
case 6:
|
|
yyDollar = yyS[yypt-1 : yypt+1]
|
|
//line parser.go.y:75
|
|
{
|
|
yyVAL.stmt = &ast.ExprStmt{Expr: yyDollar[1].expr}
|
|
}
|
|
case 7:
|
|
yyDollar = yyS[yypt-1 : yypt+1]
|
|
//line parser.go.y:81
|
|
{
|
|
yyVAL.expr = &ast.IdentExpr{Lit: yyDollar[1].tok.Lit}
|
|
}
|
|
case 8:
|
|
yyDollar = yyS[yypt-1 : yypt+1]
|
|
//line parser.go.y:85
|
|
{
|
|
yyVAL.expr = &ast.NumberExpr{Lit: yyDollar[1].tok.Lit}
|
|
}
|
|
case 9:
|
|
yyDollar = yyS[yypt-2 : yypt+1]
|
|
//line parser.go.y:89
|
|
{
|
|
yyVAL.expr = &ast.UnaryExpr{Operator: "-", Expr: yyDollar[2].expr}
|
|
}
|
|
case 10:
|
|
yyDollar = yyS[yypt-2 : yypt+1]
|
|
//line parser.go.y:93
|
|
{
|
|
yyVAL.expr = &ast.UnaryExpr{Operator: "!", Expr: yyDollar[2].expr}
|
|
}
|
|
case 11:
|
|
yyDollar = yyS[yypt-2 : yypt+1]
|
|
//line parser.go.y:97
|
|
{
|
|
yyVAL.expr = &ast.UnaryExpr{Operator: "^", Expr: yyDollar[2].expr}
|
|
}
|
|
case 12:
|
|
yyDollar = yyS[yypt-1 : yypt+1]
|
|
//line parser.go.y:101
|
|
{
|
|
yyVAL.expr = &ast.StringExpr{Lit: yyDollar[1].tok.Lit}
|
|
}
|
|
case 13:
|
|
yyDollar = yyS[yypt-5 : yypt+1]
|
|
//line parser.go.y:105
|
|
{
|
|
yyVAL.expr = &ast.TernaryOpExpr{Expr: yyDollar[1].expr, Lhs: yyDollar[3].expr, Rhs: yyDollar[5].expr}
|
|
}
|
|
case 14:
|
|
yyDollar = yyS[yypt-3 : yypt+1]
|
|
//line parser.go.y:109
|
|
{
|
|
yyVAL.expr = &ast.ParenExpr{SubExpr: yyDollar[2].expr}
|
|
}
|
|
case 15:
|
|
yyDollar = yyS[yypt-3 : yypt+1]
|
|
//line parser.go.y:113
|
|
{
|
|
yyVAL.expr = &ast.BinOpExpr{Lhs: yyDollar[1].expr, Operator: "+", Rhs: yyDollar[3].expr}
|
|
}
|
|
case 16:
|
|
yyDollar = yyS[yypt-3 : yypt+1]
|
|
//line parser.go.y:117
|
|
{
|
|
yyVAL.expr = &ast.BinOpExpr{Lhs: yyDollar[1].expr, Operator: "-", Rhs: yyDollar[3].expr}
|
|
}
|
|
case 17:
|
|
yyDollar = yyS[yypt-3 : yypt+1]
|
|
//line parser.go.y:121
|
|
{
|
|
yyVAL.expr = &ast.BinOpExpr{Lhs: yyDollar[1].expr, Operator: "*", Rhs: yyDollar[3].expr}
|
|
}
|
|
case 18:
|
|
yyDollar = yyS[yypt-3 : yypt+1]
|
|
//line parser.go.y:125
|
|
{
|
|
yyVAL.expr = &ast.BinOpExpr{Lhs: yyDollar[1].expr, Operator: "/", Rhs: yyDollar[3].expr}
|
|
}
|
|
case 19:
|
|
yyDollar = yyS[yypt-3 : yypt+1]
|
|
//line parser.go.y:129
|
|
{
|
|
yyVAL.expr = &ast.BinOpExpr{Lhs: yyDollar[1].expr, Operator: "%", Rhs: yyDollar[3].expr}
|
|
}
|
|
case 20:
|
|
yyDollar = yyS[yypt-3 : yypt+1]
|
|
//line parser.go.y:133
|
|
{
|
|
yyVAL.expr = &ast.BinOpExpr{Lhs: yyDollar[1].expr, Operator: "==", Rhs: yyDollar[3].expr}
|
|
}
|
|
case 21:
|
|
yyDollar = yyS[yypt-3 : yypt+1]
|
|
//line parser.go.y:137
|
|
{
|
|
yyVAL.expr = &ast.BinOpExpr{Lhs: yyDollar[1].expr, Operator: "!=", Rhs: yyDollar[3].expr}
|
|
}
|
|
case 22:
|
|
yyDollar = yyS[yypt-3 : yypt+1]
|
|
//line parser.go.y:141
|
|
{
|
|
yyVAL.expr = &ast.BinOpExpr{Lhs: yyDollar[1].expr, Operator: ">", Rhs: yyDollar[3].expr}
|
|
}
|
|
case 23:
|
|
yyDollar = yyS[yypt-3 : yypt+1]
|
|
//line parser.go.y:145
|
|
{
|
|
yyVAL.expr = &ast.BinOpExpr{Lhs: yyDollar[1].expr, Operator: ">=", Rhs: yyDollar[3].expr}
|
|
}
|
|
case 24:
|
|
yyDollar = yyS[yypt-3 : yypt+1]
|
|
//line parser.go.y:149
|
|
{
|
|
yyVAL.expr = &ast.BinOpExpr{Lhs: yyDollar[1].expr, Operator: "<", Rhs: yyDollar[3].expr}
|
|
}
|
|
case 25:
|
|
yyDollar = yyS[yypt-3 : yypt+1]
|
|
//line parser.go.y:153
|
|
{
|
|
yyVAL.expr = &ast.BinOpExpr{Lhs: yyDollar[1].expr, Operator: "<=", Rhs: yyDollar[3].expr}
|
|
}
|
|
case 26:
|
|
yyDollar = yyS[yypt-3 : yypt+1]
|
|
//line parser.go.y:157
|
|
{
|
|
yyVAL.expr = &ast.BinOpExpr{Lhs: yyDollar[1].expr, Operator: "|", Rhs: yyDollar[3].expr}
|
|
}
|
|
case 27:
|
|
yyDollar = yyS[yypt-3 : yypt+1]
|
|
//line parser.go.y:161
|
|
{
|
|
yyVAL.expr = &ast.BinOpExpr{Lhs: yyDollar[1].expr, Operator: "||", Rhs: yyDollar[3].expr}
|
|
}
|
|
case 28:
|
|
yyDollar = yyS[yypt-3 : yypt+1]
|
|
//line parser.go.y:165
|
|
{
|
|
yyVAL.expr = &ast.BinOpExpr{Lhs: yyDollar[1].expr, Operator: "&", Rhs: yyDollar[3].expr}
|
|
}
|
|
case 29:
|
|
yyDollar = yyS[yypt-3 : yypt+1]
|
|
//line parser.go.y:169
|
|
{
|
|
yyVAL.expr = &ast.BinOpExpr{Lhs: yyDollar[1].expr, Operator: "&&", Rhs: yyDollar[3].expr}
|
|
}
|
|
case 32:
|
|
yyDollar = yyS[yypt-1 : yypt+1]
|
|
//line parser.go.y:179
|
|
{
|
|
}
|
|
case 33:
|
|
yyDollar = yyS[yypt-2 : yypt+1]
|
|
//line parser.go.y:182
|
|
{
|
|
}
|
|
case 34:
|
|
yyDollar = yyS[yypt-1 : yypt+1]
|
|
//line parser.go.y:187
|
|
{
|
|
}
|
|
case 35:
|
|
yyDollar = yyS[yypt-1 : yypt+1]
|
|
//line parser.go.y:190
|
|
{
|
|
}
|
|
}
|
|
goto yystack /* stack new state and value */
|
|
}
|