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mirror of https://github.com/danog/liquid.git synced 2024-11-26 23:24:38 +01:00
liquid/expressions/y.go
2017-07-27 18:11:37 -04:00

849 lines
18 KiB
Go

//line expressions.y:2
package expressions
import __yyfmt__ "fmt"
//line expressions.y:2
import (
"fmt"
"github.com/osteele/liquid/values"
"math"
)
func init() {
// This allows adding and removing references to fmt in the rules below,
// without having to comment and un-comment the import statement above.
_ = fmt.Sprint("")
}
//line expressions.y:16
type yySymType struct {
yys int
name string
val interface{}
f func(Context) values.Value
s string
ss []string
exprs []Expression
cycle Cycle
cyclefn func(string) Cycle
loop Loop
loopmods loopModifiers
filter_params []valueFn
}
const LITERAL = 57346
const IDENTIFIER = 57347
const KEYWORD = 57348
const PROPERTY = 57349
const ASSIGN = 57350
const CYCLE = 57351
const LOOP = 57352
const WHEN = 57353
const EQ = 57354
const NEQ = 57355
const GE = 57356
const LE = 57357
const IN = 57358
const AND = 57359
const OR = 57360
const CONTAINS = 57361
const DOTDOT = 57362
var yyToknames = [...]string{
"$end",
"error",
"$unk",
"LITERAL",
"IDENTIFIER",
"KEYWORD",
"PROPERTY",
"ASSIGN",
"CYCLE",
"LOOP",
"WHEN",
"EQ",
"NEQ",
"GE",
"LE",
"IN",
"AND",
"OR",
"CONTAINS",
"DOTDOT",
"'.'",
"'|'",
"'<'",
"'>'",
"';'",
"'='",
"':'",
"','",
"'('",
"')'",
"'['",
"']'",
}
var yyStatenames = [...]string{}
const yyEofCode = 1
const yyErrCode = 2
const yyInitialStackSize = 16
//line yacctab:1
var yyExca = [...]int{
-1, 1,
1, -1,
-2, 0,
-1, 75,
20, 18,
-2, 23,
-1, 76,
20, 19,
-2, 24,
}
const yyPrivate = 57344
const yyLast = 104
var yyAct = [...]int{
9, 74, 46, 41, 8, 87, 78, 23, 14, 15,
18, 10, 11, 25, 42, 3, 4, 5, 6, 25,
37, 58, 10, 11, 40, 42, 45, 50, 51, 52,
53, 54, 55, 56, 57, 43, 12, 26, 60, 38,
81, 24, 59, 26, 69, 60, 25, 12, 66, 65,
68, 61, 24, 62, 44, 70, 25, 75, 76, 10,
11, 27, 28, 31, 32, 71, 72, 47, 33, 77,
26, 7, 30, 29, 79, 80, 21, 14, 15, 82,
26, 16, 12, 84, 64, 13, 35, 36, 48, 49,
85, 86, 83, 19, 34, 2, 1, 73, 20, 39,
17, 22, 67, 63,
}
var yyPact = [...]int{
7, -1000, 60, 76, 89, 71, 18, -1000, 19, 49,
-1000, -1000, 18, -1000, 18, 18, -6, 14, -3, -1000,
10, 38, 1, 39, 83, -1000, 18, 18, 18, 18,
18, 18, 18, 18, -9, -1000, -1000, 18, -1000, -1000,
89, -1000, 89, -1000, 55, -1000, -1000, 18, -1000, 18,
12, 6, 6, 6, 6, 6, 6, 6, -1000, 30,
6, -14, -14, -1000, 53, 19, 39, -22, 6, -1000,
-1000, -1000, -1000, 69, 20, -1000, -1000, -1000, 18, -1000,
88, 86, 6, -1000, -25, -1000, -1000, -1000,
}
var yyPgo = [...]int{
0, 0, 71, 4, 94, 1, 103, 102, 101, 2,
100, 99, 3, 98, 97, 10, 96,
}
var yyR1 = [...]int{
0, 16, 16, 16, 16, 16, 10, 11, 11, 12,
12, 8, 9, 9, 15, 13, 6, 6, 5, 5,
14, 14, 14, 1, 1, 1, 1, 1, 3, 3,
3, 7, 7, 2, 2, 2, 2, 2, 2, 2,
2, 4, 4, 4,
}
var yyR2 = [...]int{
0, 2, 5, 3, 3, 3, 2, 3, 1, 0,
3, 2, 0, 3, 1, 4, 5, 1, 1, 1,
0, 2, 3, 1, 1, 2, 4, 3, 1, 3,
4, 1, 3, 1, 3, 3, 3, 3, 3, 3,
3, 1, 3, 3,
}
var yyChk = [...]int{
-1000, -16, -4, 8, 9, 10, 11, -2, -3, -1,
4, 5, 29, 25, 17, 18, 5, -10, -15, 4,
-13, 5, -8, -1, 22, 7, 31, 12, 13, 24,
23, 14, 15, 19, -4, -2, -2, 26, 25, -11,
27, -12, 28, 25, 16, 25, -9, 28, 5, 6,
-1, -1, -1, -1, -1, -1, -1, -1, 30, -3,
-1, -15, -15, -6, 29, -3, -1, -7, -1, 32,
25, -12, -12, -14, -5, 4, 5, -9, 28, 5,
6, 20, -1, 4, -5, 4, 5, 30,
}
var yyDef = [...]int{
0, -2, 0, 0, 0, 0, 0, 41, 33, 28,
23, 24, 0, 1, 0, 0, 0, 0, 9, 14,
0, 0, 0, 12, 0, 25, 0, 0, 0, 0,
0, 0, 0, 0, 0, 42, 43, 0, 3, 6,
0, 8, 0, 4, 0, 5, 11, 0, 29, 0,
0, 34, 35, 36, 37, 38, 39, 40, 27, 0,
28, 9, 9, 20, 0, 17, 12, 30, 31, 26,
2, 7, 10, 15, 0, -2, -2, 13, 0, 21,
0, 0, 32, 22, 0, 18, 19, 16,
}
var yyTok1 = [...]int{
1, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
29, 30, 3, 3, 28, 3, 21, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 27, 25,
23, 26, 24, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 31, 3, 32, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 22,
}
var yyTok2 = [...]int{
2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12, 13, 14, 15, 16, 17, 18, 19, 20,
}
var yyTok3 = [...]int{
0,
}
var yyErrorMessages = [...]struct {
state int
token int
msg string
}{}
//line yaccpar:1
/* parser for yacc output */
var (
yyDebug = 0
yyErrorVerbose = false
)
type yyLexer interface {
Lex(lval *yySymType) int
Error(s string)
}
type yyParser interface {
Parse(yyLexer) int
Lookahead() int
}
type yyParserImpl struct {
lval yySymType
stack [yyInitialStackSize]yySymType
char int
}
func (p *yyParserImpl) Lookahead() int {
return p.char
}
func yyNewParser() yyParser {
return &yyParserImpl{}
}
const yyFlag = -1000
func yyTokname(c int) string {
if c >= 1 && c-1 < len(yyToknames) {
if yyToknames[c-1] != "" {
return yyToknames[c-1]
}
}
return __yyfmt__.Sprintf("tok-%v", c)
}
func yyStatname(s int) string {
if s >= 0 && s < len(yyStatenames) {
if yyStatenames[s] != "" {
return yyStatenames[s]
}
}
return __yyfmt__.Sprintf("state-%v", s)
}
func yyErrorMessage(state, lookAhead int) string {
const TOKSTART = 4
if !yyErrorVerbose {
return "syntax error"
}
for _, e := range yyErrorMessages {
if e.state == state && e.token == lookAhead {
return "syntax error: " + e.msg
}
}
res := "syntax error: unexpected " + yyTokname(lookAhead)
// To match Bison, suggest at most four expected tokens.
expected := make([]int, 0, 4)
// Look for shiftable tokens.
base := yyPact[state]
for tok := TOKSTART; tok-1 < len(yyToknames); tok++ {
if n := base + tok; n >= 0 && n < yyLast && yyChk[yyAct[n]] == tok {
if len(expected) == cap(expected) {
return res
}
expected = append(expected, tok)
}
}
if yyDef[state] == -2 {
i := 0
for yyExca[i] != -1 || yyExca[i+1] != state {
i += 2
}
// Look for tokens that we accept or reduce.
for i += 2; yyExca[i] >= 0; i += 2 {
tok := yyExca[i]
if tok < TOKSTART || yyExca[i+1] == 0 {
continue
}
if len(expected) == cap(expected) {
return res
}
expected = append(expected, tok)
}
// If the default action is to accept or reduce, give up.
if yyExca[i+1] != 0 {
return res
}
}
for i, tok := range expected {
if i == 0 {
res += ", expecting "
} else {
res += " or "
}
res += yyTokname(tok)
}
return res
}
func yylex1(lex yyLexer, lval *yySymType) (char, token int) {
token = 0
char = lex.Lex(lval)
if char <= 0 {
token = yyTok1[0]
goto out
}
if char < len(yyTok1) {
token = yyTok1[char]
goto out
}
if char >= yyPrivate {
if char < yyPrivate+len(yyTok2) {
token = yyTok2[char-yyPrivate]
goto out
}
}
for i := 0; i < len(yyTok3); i += 2 {
token = yyTok3[i+0]
if token == char {
token = yyTok3[i+1]
goto out
}
}
out:
if token == 0 {
token = yyTok2[1] /* unknown char */
}
if yyDebug >= 3 {
__yyfmt__.Printf("lex %s(%d)\n", yyTokname(token), uint(char))
}
return char, token
}
func yyParse(yylex yyLexer) int {
return yyNewParser().Parse(yylex)
}
func (yyrcvr *yyParserImpl) Parse(yylex yyLexer) int {
var yyn int
var yyVAL yySymType
var yyDollar []yySymType
_ = yyDollar // silence set and not used
yyS := yyrcvr.stack[:]
Nerrs := 0 /* number of errors */
Errflag := 0 /* error recovery flag */
yystate := 0
yyrcvr.char = -1
yytoken := -1 // yyrcvr.char translated into internal numbering
defer func() {
// Make sure we report no lookahead when not parsing.
yystate = -1
yyrcvr.char = -1
yytoken = -1
}()
yyp := -1
goto yystack
ret0:
return 0
ret1:
return 1
yystack:
/* put a state and value onto the stack */
if yyDebug >= 4 {
__yyfmt__.Printf("char %v in %v\n", yyTokname(yytoken), yyStatname(yystate))
}
yyp++
if yyp >= len(yyS) {
nyys := make([]yySymType, len(yyS)*2)
copy(nyys, yyS)
yyS = nyys
}
yyS[yyp] = yyVAL
yyS[yyp].yys = yystate
yynewstate:
yyn = yyPact[yystate]
if yyn <= yyFlag {
goto yydefault /* simple state */
}
if yyrcvr.char < 0 {
yyrcvr.char, yytoken = yylex1(yylex, &yyrcvr.lval)
}
yyn += yytoken
if yyn < 0 || yyn >= yyLast {
goto yydefault
}
yyn = yyAct[yyn]
if yyChk[yyn] == yytoken { /* valid shift */
yyrcvr.char = -1
yytoken = -1
yyVAL = yyrcvr.lval
yystate = yyn
if Errflag > 0 {
Errflag--
}
goto yystack
}
yydefault:
/* default state action */
yyn = yyDef[yystate]
if yyn == -2 {
if yyrcvr.char < 0 {
yyrcvr.char, yytoken = yylex1(yylex, &yyrcvr.lval)
}
/* look through exception table */
xi := 0
for {
if yyExca[xi+0] == -1 && yyExca[xi+1] == yystate {
break
}
xi += 2
}
for xi += 2; ; xi += 2 {
yyn = yyExca[xi+0]
if yyn < 0 || yyn == yytoken {
break
}
}
yyn = yyExca[xi+1]
if yyn < 0 {
goto ret0
}
}
if yyn == 0 {
/* error ... attempt to resume parsing */
switch Errflag {
case 0: /* brand new error */
yylex.Error(yyErrorMessage(yystate, yytoken))
Nerrs++
if yyDebug >= 1 {
__yyfmt__.Printf("%s", yyStatname(yystate))
__yyfmt__.Printf(" saw %s\n", yyTokname(yytoken))
}
fallthrough
case 1, 2: /* incompletely recovered error ... try again */
Errflag = 3
/* find a state where "error" is a legal shift action */
for yyp >= 0 {
yyn = yyPact[yyS[yyp].yys] + yyErrCode
if yyn >= 0 && yyn < yyLast {
yystate = yyAct[yyn] /* simulate a shift of "error" */
if yyChk[yystate] == yyErrCode {
goto yystack
}
}
/* the current p has no shift on "error", pop stack */
if yyDebug >= 2 {
__yyfmt__.Printf("error recovery pops state %d\n", yyS[yyp].yys)
}
yyp--
}
/* there is no state on the stack with an error shift ... abort */
goto ret1
case 3: /* no shift yet; clobber input char */
if yyDebug >= 2 {
__yyfmt__.Printf("error recovery discards %s\n", yyTokname(yytoken))
}
if yytoken == yyEofCode {
goto ret1
}
yyrcvr.char = -1
yytoken = -1
goto yynewstate /* try again in the same state */
}
}
/* reduction by production yyn */
if yyDebug >= 2 {
__yyfmt__.Printf("reduce %v in:\n\t%v\n", yyn, yyStatname(yystate))
}
yynt := yyn
yypt := yyp
_ = yypt // guard against "declared and not used"
yyp -= yyR2[yyn]
// yyp is now the index of $0. Perform the default action. Iff the
// reduced production is ε, $1 is possibly out of range.
if yyp+1 >= len(yyS) {
nyys := make([]yySymType, len(yyS)*2)
copy(nyys, yyS)
yyS = nyys
}
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-2 : yypt+1]
//line expressions.y:46
{
yylex.(*lexer).val = yyDollar[1].f
}
case 2:
yyDollar = yyS[yypt-5 : yypt+1]
//line expressions.y:47
{
yylex.(*lexer).Assignment = Assignment{yyDollar[2].name, &expression{yyDollar[4].f}}
}
case 3:
yyDollar = yyS[yypt-3 : yypt+1]
//line expressions.y:50
{
yylex.(*lexer).Cycle = yyDollar[2].cycle
}
case 4:
yyDollar = yyS[yypt-3 : yypt+1]
//line expressions.y:51
{
yylex.(*lexer).Loop = yyDollar[2].loop
}
case 5:
yyDollar = yyS[yypt-3 : yypt+1]
//line expressions.y:52
{
yylex.(*lexer).When = When{yyDollar[2].exprs}
}
case 6:
yyDollar = yyS[yypt-2 : yypt+1]
//line expressions.y:55
{
yyVAL.cycle = yyDollar[2].cyclefn(yyDollar[1].s)
}
case 7:
yyDollar = yyS[yypt-3 : yypt+1]
//line expressions.y:58
{
h, t := yyDollar[2].s, yyDollar[3].ss
yyVAL.cyclefn = func(g string) Cycle { return Cycle{g, append([]string{h}, t...)} }
}
case 8:
yyDollar = yyS[yypt-1 : yypt+1]
//line expressions.y:62
{
vals := yyDollar[1].ss
yyVAL.cyclefn = func(h string) Cycle { return Cycle{Values: append([]string{h}, vals...)} }
}
case 9:
yyDollar = yyS[yypt-0 : yypt+1]
//line expressions.y:69
{
yyVAL.ss = []string{}
}
case 10:
yyDollar = yyS[yypt-3 : yypt+1]
//line expressions.y:70
{
yyVAL.ss = append([]string{yyDollar[2].s}, yyDollar[3].ss...)
}
case 11:
yyDollar = yyS[yypt-2 : yypt+1]
//line expressions.y:73
{
yyVAL.exprs = append([]Expression{&expression{yyDollar[1].f}}, yyDollar[2].exprs...)
}
case 12:
yyDollar = yyS[yypt-0 : yypt+1]
//line expressions.y:75
{
yyVAL.exprs = []Expression{}
}
case 13:
yyDollar = yyS[yypt-3 : yypt+1]
//line expressions.y:76
{
yyVAL.exprs = append([]Expression{&expression{yyDollar[2].f}}, yyDollar[3].exprs...)
}
case 14:
yyDollar = yyS[yypt-1 : yypt+1]
//line expressions.y:79
{
s, ok := yyDollar[1].val.(string)
if !ok {
panic(SyntaxError(fmt.Sprintf("expected a string for %q", yyDollar[1].val)))
}
yyVAL.s = s
}
case 15:
yyDollar = yyS[yypt-4 : yypt+1]
//line expressions.y:87
{
name, expr, mods := yyDollar[1].name, yyDollar[3].f, yyDollar[4].loopmods
yyVAL.loop = Loop{name, &expression{expr}, mods}
}
case 16:
yyDollar = yyS[yypt-5 : yypt+1]
//line expressions.y:93
{
yyVAL.f = makeRangeExpr(yyDollar[2].f, yyDollar[4].f)
}
case 18:
yyDollar = yyS[yypt-1 : yypt+1]
//line expressions.y:101
{
val := yyDollar[1].val
yyVAL.f = func(Context) values.Value { return values.ValueOf(val) }
}
case 19:
yyDollar = yyS[yypt-1 : yypt+1]
//line expressions.y:102
{
name := yyDollar[1].name
yyVAL.f = func(ctx Context) values.Value { return values.ValueOf(ctx.Get(name)) }
}
case 20:
yyDollar = yyS[yypt-0 : yypt+1]
//line expressions.y:105
{
yyVAL.loopmods = loopModifiers{Cols: math.MaxUint32}
}
case 21:
yyDollar = yyS[yypt-2 : yypt+1]
//line expressions.y:106
{
switch yyDollar[2].name {
case "reversed":
yyDollar[1].loopmods.Reversed = true
default:
panic(SyntaxError(fmt.Sprintf("undefined loop modifier %q", yyDollar[2].name)))
}
yyVAL.loopmods = yyDollar[1].loopmods
}
case 22:
yyDollar = yyS[yypt-3 : yypt+1]
//line expressions.y:115
{ // TODO can this be a variable?
switch yyDollar[2].name {
case "cols":
cols, ok := yyDollar[3].val.(int)
if !ok {
panic(SyntaxError(fmt.Sprintf("loop cols must an integer")))
}
yyDollar[1].loopmods.Cols = cols
case "limit":
limit, ok := yyDollar[3].val.(int)
if !ok {
panic(SyntaxError(fmt.Sprintf("loop limit must an integer")))
}
yyDollar[1].loopmods.Limit = &limit
case "offset":
offset, ok := yyDollar[3].val.(int)
if !ok {
panic(SyntaxError(fmt.Sprintf("loop offset must an integer")))
}
yyDollar[1].loopmods.Offset = offset
default:
panic(SyntaxError(fmt.Sprintf("undefined loop modifier %q", yyDollar[2].name)))
}
yyVAL.loopmods = yyDollar[1].loopmods
}
case 23:
yyDollar = yyS[yypt-1 : yypt+1]
//line expressions.y:143
{
val := yyDollar[1].val
yyVAL.f = func(Context) values.Value { return values.ValueOf(val) }
}
case 24:
yyDollar = yyS[yypt-1 : yypt+1]
//line expressions.y:144
{
name := yyDollar[1].name
yyVAL.f = func(ctx Context) values.Value { return values.ValueOf(ctx.Get(name)) }
}
case 25:
yyDollar = yyS[yypt-2 : yypt+1]
//line expressions.y:145
{
yyVAL.f = makeObjectPropertyExpr(yyDollar[1].f, yyDollar[2].name)
}
case 26:
yyDollar = yyS[yypt-4 : yypt+1]
//line expressions.y:146
{
yyVAL.f = makeIndexExpr(yyDollar[1].f, yyDollar[3].f)
}
case 27:
yyDollar = yyS[yypt-3 : yypt+1]
//line expressions.y:147
{
yyVAL.f = yyDollar[2].f
}
case 29:
yyDollar = yyS[yypt-3 : yypt+1]
//line expressions.y:152
{
yyVAL.f = makeFilter(yyDollar[1].f, yyDollar[3].name, nil)
}
case 30:
yyDollar = yyS[yypt-4 : yypt+1]
//line expressions.y:153
{
yyVAL.f = makeFilter(yyDollar[1].f, yyDollar[3].name, yyDollar[4].filter_params)
}
case 31:
yyDollar = yyS[yypt-1 : yypt+1]
//line expressions.y:157
{
yyVAL.filter_params = []valueFn{yyDollar[1].f}
}
case 32:
yyDollar = yyS[yypt-3 : yypt+1]
//line expressions.y:159
{
yyVAL.filter_params = append(yyDollar[1].filter_params, yyDollar[3].f)
}
case 34:
yyDollar = yyS[yypt-3 : yypt+1]
//line expressions.y:163
{
fa, fb := yyDollar[1].f, yyDollar[3].f
yyVAL.f = func(ctx Context) values.Value {
a, b := fa(ctx), fb(ctx)
return values.ValueOf(a.Equal(b))
}
}
case 35:
yyDollar = yyS[yypt-3 : yypt+1]
//line expressions.y:170
{
fa, fb := yyDollar[1].f, yyDollar[3].f
yyVAL.f = func(ctx Context) values.Value {
a, b := fa(ctx), fb(ctx)
return values.ValueOf(!a.Equal(b))
}
}
case 36:
yyDollar = yyS[yypt-3 : yypt+1]
//line expressions.y:177
{
fa, fb := yyDollar[1].f, yyDollar[3].f
yyVAL.f = func(ctx Context) values.Value {
a, b := fa(ctx), fb(ctx)
return values.ValueOf(b.Less(a))
}
}
case 37:
yyDollar = yyS[yypt-3 : yypt+1]
//line expressions.y:184
{
fa, fb := yyDollar[1].f, yyDollar[3].f
yyVAL.f = func(ctx Context) values.Value {
a, b := fa(ctx), fb(ctx)
return values.ValueOf(a.Less(b))
}
}
case 38:
yyDollar = yyS[yypt-3 : yypt+1]
//line expressions.y:191
{
fa, fb := yyDollar[1].f, yyDollar[3].f
yyVAL.f = func(ctx Context) values.Value {
a, b := fa(ctx), fb(ctx)
return values.ValueOf(b.Less(a) || a.Equal(b))
}
}
case 39:
yyDollar = yyS[yypt-3 : yypt+1]
//line expressions.y:198
{
fa, fb := yyDollar[1].f, yyDollar[3].f
yyVAL.f = func(ctx Context) values.Value {
a, b := fa(ctx), fb(ctx)
return values.ValueOf(a.Less(b) || a.Equal(b))
}
}
case 40:
yyDollar = yyS[yypt-3 : yypt+1]
//line expressions.y:205
{
yyVAL.f = makeContainsExpr(yyDollar[1].f, yyDollar[3].f)
}
case 42:
yyDollar = yyS[yypt-3 : yypt+1]
//line expressions.y:210
{
fa, fb := yyDollar[1].f, yyDollar[3].f
yyVAL.f = func(ctx Context) values.Value {
return values.ValueOf(fa(ctx).Test() && fb(ctx).Test())
}
}
case 43:
yyDollar = yyS[yypt-3 : yypt+1]
//line expressions.y:216
{
fa, fb := yyDollar[1].f, yyDollar[3].f
yyVAL.f = func(ctx Context) values.Value {
return values.ValueOf(fa(ctx).Test() || fb(ctx).Test())
}
}
}
goto yystack /* stack new state and value */
}