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How to use accept method of parser Package

Best Gauge code snippet using parser.accept

expression.go

Source:expression.go

...50	return p.Expression()51}52func (p *EXPRESSION) Expression() bool {53	// Expression      <-      (Op / Grouping) EndOfFile54	accept := false55	accept = true56	start := p.ParserData.Pos()57	{58		save := p.ParserData.Pos()59		{60			save := p.ParserData.Pos()61			accept = p.Op()62			if !accept {63				accept = p.Grouping()64				if !accept {65				}66			}67			if !accept {68				p.ParserData.Seek(save)69			}70		}71		if accept {72			accept = p.EndOfFile()73			if accept {74			}75		}76		if !accept {77			if p.LastError < p.ParserData.Pos() {78				p.LastError = p.ParserData.Pos()79			}80			p.ParserData.Seek(save)81		}82	}83	if accept && start != p.ParserData.Pos() {84		if start < p.IgnoreRange.A || p.IgnoreRange.A == 0 {85			p.IgnoreRange.A = start86		}87		p.IgnoreRange.B = p.ParserData.Pos()88	}89	return accept90}91func (p *EXPRESSION) Op() bool {92	// Op              <-      ShiftRight / ShiftLeft / AndNot / Mask / Add / Sub / Mul / BooleanOp93	accept := false94	accept = true95	start := p.ParserData.Pos()96	{97		save := p.ParserData.Pos()98		accept = p.ShiftRight()99		if !accept {100			accept = p.ShiftLeft()101			if !accept {102				accept = p.AndNot()103				if !accept {104					accept = p.Mask()105					if !accept {106						accept = p.Add()107						if !accept {108							accept = p.Sub()109							if !accept {110								accept = p.Mul()111								if !accept {112									accept = p.BooleanOp()113									if !accept {114									}115								}116							}117						}118					}119				}120			}121		}122		if !accept {123			p.ParserData.Seek(save)124		}125	}126	if accept && start != p.ParserData.Pos() {127		if start < p.IgnoreRange.A || p.IgnoreRange.A == 0 {128			p.IgnoreRange.A = start129		}130		p.IgnoreRange.B = p.ParserData.Pos()131	}132	return accept133}134func (p *EXPRESSION) BooleanOp() bool {135	// BooleanOp       <-      Eq / Lt / Gt / Le / Ge / Ne136	accept := false137	accept = true138	start := p.ParserData.Pos()139	{140		save := p.ParserData.Pos()141		accept = p.Eq()142		if !accept {143			accept = p.Lt()144			if !accept {145				accept = p.Gt()146				if !accept {147					accept = p.Le()148					if !accept {149						accept = p.Ge()150						if !accept {151							accept = p.Ne()152							if !accept {153							}154						}155					}156				}157			}158		}159		if !accept {160			p.ParserData.Seek(save)161		}162	}163	if accept && start != p.ParserData.Pos() {164		if start < p.IgnoreRange.A || p.IgnoreRange.A == 0 {165			p.IgnoreRange.A = start166		}167		p.IgnoreRange.B = p.ParserData.Pos()168	}169	return accept170}171func (p *EXPRESSION) ShiftRight() bool {172	// ShiftRight      <-      Grouping ">>" Grouping173	accept := false174	accept = true175	start := p.ParserData.Pos()176	{177		save := p.ParserData.Pos()178		accept = p.Grouping()179		if accept {180			{181				accept = true182				s := p.ParserData.Pos()183				if p.ParserData.Read() != '>' || p.ParserData.Read() != '>' {184					p.ParserData.Seek(s)185					accept = false186				}187			}188			if accept {189				accept = p.Grouping()190				if accept {191				}192			}193		}194		if !accept {195			if p.LastError < p.ParserData.Pos() {196				p.LastError = p.ParserData.Pos()197			}198			p.ParserData.Seek(save)199		}200	}201	end := p.ParserData.Pos()202	if accept {203		node := p.Root.Cleanup(start, end)204		node.Name = "ShiftRight"205		node.P = p206		node.Range = node.Range.Clip(p.IgnoreRange)207		p.Root.Append(node)208	} else {209		p.Root.Discard(start)210	}211	if p.IgnoreRange.A >= end || p.IgnoreRange.B <= start {212		p.IgnoreRange = text.Region{}213	}214	return accept215}216func (p *EXPRESSION) ShiftLeft() bool {217	// ShiftLeft       <-      Grouping "<<" Grouping218	accept := false219	accept = true220	start := p.ParserData.Pos()221	{222		save := p.ParserData.Pos()223		accept = p.Grouping()224		if accept {225			{226				accept = true227				s := p.ParserData.Pos()228				if p.ParserData.Read() != '<' || p.ParserData.Read() != '<' {229					p.ParserData.Seek(s)230					accept = false231				}232			}233			if accept {234				accept = p.Grouping()235				if accept {236				}237			}238		}239		if !accept {240			if p.LastError < p.ParserData.Pos() {241				p.LastError = p.ParserData.Pos()242			}243			p.ParserData.Seek(save)244		}245	}246	end := p.ParserData.Pos()247	if accept {248		node := p.Root.Cleanup(start, end)249		node.Name = "ShiftLeft"250		node.P = p251		node.Range = node.Range.Clip(p.IgnoreRange)252		p.Root.Append(node)253	} else {254		p.Root.Discard(start)255	}256	if p.IgnoreRange.A >= end || p.IgnoreRange.B <= start {257		p.IgnoreRange = text.Region{}258	}259	return accept260}261func (p *EXPRESSION) Mask() bool {262	// Mask            <-      Grouping '&' Grouping263	accept := false264	accept = true265	start := p.ParserData.Pos()266	{267		save := p.ParserData.Pos()268		accept = p.Grouping()269		if accept {270			if p.ParserData.Read() != '&' {271				p.ParserData.UnRead()272				accept = false273			} else {274				accept = true275			}276			if accept {277				accept = p.Grouping()278				if accept {279				}280			}281		}282		if !accept {283			if p.LastError < p.ParserData.Pos() {284				p.LastError = p.ParserData.Pos()285			}286			p.ParserData.Seek(save)287		}288	}289	end := p.ParserData.Pos()290	if accept {291		node := p.Root.Cleanup(start, end)292		node.Name = "Mask"293		node.P = p294		node.Range = node.Range.Clip(p.IgnoreRange)295		p.Root.Append(node)296	} else {297		p.Root.Discard(start)298	}299	if p.IgnoreRange.A >= end || p.IgnoreRange.B <= start {300		p.IgnoreRange = text.Region{}301	}302	return accept303}304func (p *EXPRESSION) Add() bool {305	// Add             <-      Grouping '+' Grouping306	accept := false307	accept = true308	start := p.ParserData.Pos()309	{310		save := p.ParserData.Pos()311		accept = p.Grouping()312		if accept {313			if p.ParserData.Read() != '+' {314				p.ParserData.UnRead()315				accept = false316			} else {317				accept = true318			}319			if accept {320				accept = p.Grouping()321				if accept {322				}323			}324		}325		if !accept {326			if p.LastError < p.ParserData.Pos() {327				p.LastError = p.ParserData.Pos()328			}329			p.ParserData.Seek(save)330		}331	}332	end := p.ParserData.Pos()333	if accept {334		node := p.Root.Cleanup(start, end)335		node.Name = "Add"336		node.P = p337		node.Range = node.Range.Clip(p.IgnoreRange)338		p.Root.Append(node)339	} else {340		p.Root.Discard(start)341	}342	if p.IgnoreRange.A >= end || p.IgnoreRange.B <= start {343		p.IgnoreRange = text.Region{}344	}345	return accept346}347func (p *EXPRESSION) Sub() bool {348	// Sub             <-      Grouping '-' Grouping349	accept := false350	accept = true351	start := p.ParserData.Pos()352	{353		save := p.ParserData.Pos()354		accept = p.Grouping()355		if accept {356			if p.ParserData.Read() != '-' {357				p.ParserData.UnRead()358				accept = false359			} else {360				accept = true361			}362			if accept {363				accept = p.Grouping()364				if accept {365				}366			}367		}368		if !accept {369			if p.LastError < p.ParserData.Pos() {370				p.LastError = p.ParserData.Pos()371			}372			p.ParserData.Seek(save)373		}374	}375	end := p.ParserData.Pos()376	if accept {377		node := p.Root.Cleanup(start, end)378		node.Name = "Sub"379		node.P = p380		node.Range = node.Range.Clip(p.IgnoreRange)381		p.Root.Append(node)382	} else {383		p.Root.Discard(start)384	}385	if p.IgnoreRange.A >= end || p.IgnoreRange.B <= start {386		p.IgnoreRange = text.Region{}387	}388	return accept389}390func (p *EXPRESSION) Mul() bool {391	// Mul             <-      Grouping '*' Grouping392	accept := false393	accept = true394	start := p.ParserData.Pos()395	{396		save := p.ParserData.Pos()397		accept = p.Grouping()398		if accept {399			if p.ParserData.Read() != '*' {400				p.ParserData.UnRead()401				accept = false402			} else {403				accept = true404			}405			if accept {406				accept = p.Grouping()407				if accept {408				}409			}410		}411		if !accept {412			if p.LastError < p.ParserData.Pos() {413				p.LastError = p.ParserData.Pos()414			}415			p.ParserData.Seek(save)416		}417	}418	end := p.ParserData.Pos()419	if accept {420		node := p.Root.Cleanup(start, end)421		node.Name = "Mul"422		node.P = p423		node.Range = node.Range.Clip(p.IgnoreRange)424		p.Root.Append(node)425	} else {426		p.Root.Discard(start)427	}428	if p.IgnoreRange.A >= end || p.IgnoreRange.B <= start {429		p.IgnoreRange = text.Region{}430	}431	return accept432}433func (p *EXPRESSION) AndNot() bool {434	// AndNot          <-      Grouping "&^" Grouping435	accept := false436	accept = true437	start := p.ParserData.Pos()438	{439		save := p.ParserData.Pos()440		accept = p.Grouping()441		if accept {442			{443				accept = true444				s := p.ParserData.Pos()445				if p.ParserData.Read() != '&' || p.ParserData.Read() != '^' {446					p.ParserData.Seek(s)447					accept = false448				}449			}450			if accept {451				accept = p.Grouping()452				if accept {453				}454			}455		}456		if !accept {457			if p.LastError < p.ParserData.Pos() {458				p.LastError = p.ParserData.Pos()459			}460			p.ParserData.Seek(save)461		}462	}463	end := p.ParserData.Pos()464	if accept {465		node := p.Root.Cleanup(start, end)466		node.Name = "AndNot"467		node.P = p468		node.Range = node.Range.Clip(p.IgnoreRange)469		p.Root.Append(node)470	} else {471		p.Root.Discard(start)472	}473	if p.IgnoreRange.A >= end || p.IgnoreRange.B <= start {474		p.IgnoreRange = text.Region{}475	}476	return accept477}478func (p *EXPRESSION) Eq() bool {479	// Eq              <-      Grouping "==" Grouping480	accept := false481	accept = true482	start := p.ParserData.Pos()483	{484		save := p.ParserData.Pos()485		accept = p.Grouping()486		if accept {487			{488				accept = true489				s := p.ParserData.Pos()490				if p.ParserData.Read() != '=' || p.ParserData.Read() != '=' {491					p.ParserData.Seek(s)492					accept = false493				}494			}495			if accept {496				accept = p.Grouping()497				if accept {498				}499			}500		}501		if !accept {502			if p.LastError < p.ParserData.Pos() {503				p.LastError = p.ParserData.Pos()504			}505			p.ParserData.Seek(save)506		}507	}508	end := p.ParserData.Pos()509	if accept {510		node := p.Root.Cleanup(start, end)511		node.Name = "Eq"512		node.P = p513		node.Range = node.Range.Clip(p.IgnoreRange)514		p.Root.Append(node)515	} else {516		p.Root.Discard(start)517	}518	if p.IgnoreRange.A >= end || p.IgnoreRange.B <= start {519		p.IgnoreRange = text.Region{}520	}521	return accept522}523func (p *EXPRESSION) Ne() bool {524	// Ne              <-      Grouping "!=" Grouping525	accept := false526	accept = true527	start := p.ParserData.Pos()528	{529		save := p.ParserData.Pos()530		accept = p.Grouping()531		if accept {532			{533				accept = true534				s := p.ParserData.Pos()535				if p.ParserData.Read() != '!' || p.ParserData.Read() != '=' {536					p.ParserData.Seek(s)537					accept = false538				}539			}540			if accept {541				accept = p.Grouping()542				if accept {543				}544			}545		}546		if !accept {547			if p.LastError < p.ParserData.Pos() {548				p.LastError = p.ParserData.Pos()549			}550			p.ParserData.Seek(save)551		}552	}553	end := p.ParserData.Pos()554	if accept {555		node := p.Root.Cleanup(start, end)556		node.Name = "Ne"557		node.P = p558		node.Range = node.Range.Clip(p.IgnoreRange)559		p.Root.Append(node)560	} else {561		p.Root.Discard(start)562	}563	if p.IgnoreRange.A >= end || p.IgnoreRange.B <= start {564		p.IgnoreRange = text.Region{}565	}566	return accept567}568func (p *EXPRESSION) Lt() bool {569	// Lt              <-      Grouping '<' Grouping570	accept := false571	accept = true572	start := p.ParserData.Pos()573	{574		save := p.ParserData.Pos()575		accept = p.Grouping()576		if accept {577			if p.ParserData.Read() != '<' {578				p.ParserData.UnRead()579				accept = false580			} else {581				accept = true582			}583			if accept {584				accept = p.Grouping()585				if accept {586				}587			}588		}589		if !accept {590			if p.LastError < p.ParserData.Pos() {591				p.LastError = p.ParserData.Pos()592			}593			p.ParserData.Seek(save)594		}595	}596	end := p.ParserData.Pos()597	if accept {598		node := p.Root.Cleanup(start, end)599		node.Name = "Lt"600		node.P = p601		node.Range = node.Range.Clip(p.IgnoreRange)602		p.Root.Append(node)603	} else {604		p.Root.Discard(start)605	}606	if p.IgnoreRange.A >= end || p.IgnoreRange.B <= start {607		p.IgnoreRange = text.Region{}608	}609	return accept610}611func (p *EXPRESSION) Le() bool {612	// Le              <-      Grouping "<=" Grouping613	accept := false614	accept = true615	start := p.ParserData.Pos()616	{617		save := p.ParserData.Pos()618		accept = p.Grouping()619		if accept {620			{621				accept = true622				s := p.ParserData.Pos()623				if p.ParserData.Read() != '<' || p.ParserData.Read() != '=' {624					p.ParserData.Seek(s)625					accept = false626				}627			}628			if accept {629				accept = p.Grouping()630				if accept {631				}632			}633		}634		if !accept {635			if p.LastError < p.ParserData.Pos() {636				p.LastError = p.ParserData.Pos()637			}638			p.ParserData.Seek(save)639		}640	}641	end := p.ParserData.Pos()642	if accept {643		node := p.Root.Cleanup(start, end)644		node.Name = "Le"645		node.P = p646		node.Range = node.Range.Clip(p.IgnoreRange)647		p.Root.Append(node)648	} else {649		p.Root.Discard(start)650	}651	if p.IgnoreRange.A >= end || p.IgnoreRange.B <= start {652		p.IgnoreRange = text.Region{}653	}654	return accept655}656func (p *EXPRESSION) Gt() bool {657	// Gt              <-      Grouping '>' Grouping658	accept := false659	accept = true660	start := p.ParserData.Pos()661	{662		save := p.ParserData.Pos()663		accept = p.Grouping()664		if accept {665			if p.ParserData.Read() != '>' {666				p.ParserData.UnRead()667				accept = false668			} else {669				accept = true670			}671			if accept {672				accept = p.Grouping()673				if accept {674				}675			}676		}677		if !accept {678			if p.LastError < p.ParserData.Pos() {679				p.LastError = p.ParserData.Pos()680			}681			p.ParserData.Seek(save)682		}683	}684	end := p.ParserData.Pos()685	if accept {686		node := p.Root.Cleanup(start, end)687		node.Name = "Gt"688		node.P = p689		node.Range = node.Range.Clip(p.IgnoreRange)690		p.Root.Append(node)691	} else {692		p.Root.Discard(start)693	}694	if p.IgnoreRange.A >= end || p.IgnoreRange.B <= start {695		p.IgnoreRange = text.Region{}696	}697	return accept698}699func (p *EXPRESSION) Ge() bool {700	// Ge              <-      Grouping ">=" Grouping701	accept := false702	accept = true703	start := p.ParserData.Pos()704	{705		save := p.ParserData.Pos()706		accept = p.Grouping()707		if accept {708			{709				accept = true710				s := p.ParserData.Pos()711				if p.ParserData.Read() != '>' || p.ParserData.Read() != '=' {712					p.ParserData.Seek(s)713					accept = false714				}715			}716			if accept {717				accept = p.Grouping()718				if accept {719				}720			}721		}722		if !accept {723			if p.LastError < p.ParserData.Pos() {724				p.LastError = p.ParserData.Pos()725			}726			p.ParserData.Seek(save)727		}728	}729	end := p.ParserData.Pos()730	if accept {731		node := p.Root.Cleanup(start, end)732		node.Name = "Ge"733		node.P = p734		node.Range = node.Range.Clip(p.IgnoreRange)735		p.Root.Append(node)736	} else {737		p.Root.Discard(start)738	}739	if p.IgnoreRange.A >= end || p.IgnoreRange.B <= start {740		p.IgnoreRange = text.Region{}741	}742	return accept743}744func (p *EXPRESSION) Grouping() bool {745	// Grouping        <-      Spacing? ('(' Op ')' / Constant / DotIdentifier) Spacing?746	accept := false747	accept = true748	start := p.ParserData.Pos()749	{750		save := p.ParserData.Pos()751		accept = p.Spacing()752		accept = true753		if accept {754			{755				save := p.ParserData.Pos()756				{757					save := p.ParserData.Pos()758					if p.ParserData.Read() != '(' {759						p.ParserData.UnRead()760						accept = false761					} else {762						accept = true763					}764					if accept {765						accept = p.Op()766						if accept {767							if p.ParserData.Read() != ')' {768								p.ParserData.UnRead()769								accept = false770							} else {771								accept = true772							}773							if accept {774							}775						}776					}777					if !accept {778						if p.LastError < p.ParserData.Pos() {779							p.LastError = p.ParserData.Pos()780						}781						p.ParserData.Seek(save)782					}783				}784				if !accept {785					accept = p.Constant()786					if !accept {787						accept = p.DotIdentifier()788						if !accept {789						}790					}791				}792				if !accept {793					p.ParserData.Seek(save)794				}795			}796			if accept {797				accept = p.Spacing()798				accept = true799				if accept {800				}801			}802		}803		if !accept {804			if p.LastError < p.ParserData.Pos() {805				p.LastError = p.ParserData.Pos()806			}807			p.ParserData.Seek(save)808		}809	}810	if accept && start != p.ParserData.Pos() {811		if start < p.IgnoreRange.A || p.IgnoreRange.A == 0 {812			p.IgnoreRange.A = start813		}814		p.IgnoreRange.B = p.ParserData.Pos()815	}816	return accept817}818func (p *EXPRESSION) DotIdentifier() bool {819	// DotIdentifier   <-      Identifier ('.' Identifier)*820	accept := false821	accept = true822	start := p.ParserData.Pos()823	{824		save := p.ParserData.Pos()825		accept = p.Identifier()826		if accept {827			{828				accept = true829				for accept {830					{831						save := p.ParserData.Pos()832						if p.ParserData.Read() != '.' {833							p.ParserData.UnRead()834							accept = false835						} else {836							accept = true837						}838						if accept {839							accept = p.Identifier()840							if accept {841							}842						}843						if !accept {844							if p.LastError < p.ParserData.Pos() {845								p.LastError = p.ParserData.Pos()846							}847							p.ParserData.Seek(save)848						}849					}850				}851				accept = true852			}853			if accept {854			}855		}856		if !accept {857			if p.LastError < p.ParserData.Pos() {858				p.LastError = p.ParserData.Pos()859			}860			p.ParserData.Seek(save)861		}862	}863	end := p.ParserData.Pos()864	if accept {865		node := p.Root.Cleanup(start, end)866		node.Name = "DotIdentifier"867		node.P = p868		node.Range = node.Range.Clip(p.IgnoreRange)869		p.Root.Append(node)870	} else {871		p.Root.Discard(start)872	}873	if p.IgnoreRange.A >= end || p.IgnoreRange.B <= start {874		p.IgnoreRange = text.Region{}875	}876	return accept877}878func (p *EXPRESSION) Identifier() bool {879	// Identifier      <-      [A-Z] [_A-Za-z0-9]*880	accept := false881	accept = true882	start := p.ParserData.Pos()883	{884		save := p.ParserData.Pos()885		c := p.ParserData.Read()886		if c >= 'A' && c <= 'Z' {887			accept = true888		} else {889			p.ParserData.UnRead()890			accept = false891		}892		if accept {893			{894				accept = true895				for accept {896					{897						save := p.ParserData.Pos()898						c := p.ParserData.Read()899						if c >= 'A' && c <= 'Z' {900							accept = true901						} else {902							p.ParserData.UnRead()903							accept = false904						}905						if !accept {906							c := p.ParserData.Read()907							if c >= 'a' && c <= 'z' {908								accept = true909							} else {910								p.ParserData.UnRead()911								accept = false912							}913							if !accept {914								c := p.ParserData.Read()915								if c >= '0' && c <= '9' {916									accept = true917								} else {918									p.ParserData.UnRead()919									accept = false920								}921								if !accept {922									{923										accept = false924										c := p.ParserData.Read()925										if c == '_' {926											accept = true927										} else {928											p.ParserData.UnRead()929										}930									}931									if !accept {932									}933								}934							}935						}936						if !accept {937							p.ParserData.Seek(save)938						}939					}940				}941				accept = true942			}943			if accept {944			}945		}946		if !accept {947			if p.LastError < p.ParserData.Pos() {948				p.LastError = p.ParserData.Pos()949			}950			p.ParserData.Seek(save)951		}952	}953	end := p.ParserData.Pos()954	if accept {955		node := p.Root.Cleanup(start, end)956		node.Name = "Identifier"957		node.P = p958		node.Range = node.Range.Clip(p.IgnoreRange)959		p.Root.Append(node)960	} else {961		p.Root.Discard(start)962	}963	if p.IgnoreRange.A >= end || p.IgnoreRange.B <= start {964		p.IgnoreRange = text.Region{}965	}966	return accept967}968func (p *EXPRESSION) Constant() bool {969	// Constant        <-      ("0x" [a-fA-F0-9]+) / [0-9]+970	accept := false971	accept = true972	start := p.ParserData.Pos()973	{974		save := p.ParserData.Pos()975		{976			save := p.ParserData.Pos()977			{978				accept = true979				s := p.ParserData.Pos()980				if p.ParserData.Read() != '0' || p.ParserData.Read() != 'x' {981					p.ParserData.Seek(s)982					accept = false983				}984			}985			if accept {986				{987					save := p.ParserData.Pos()988					{989						save := p.ParserData.Pos()990						c := p.ParserData.Read()991						if c >= 'a' && c <= 'f' {992							accept = true993						} else {994							p.ParserData.UnRead()995							accept = false996						}997						if !accept {998							c := p.ParserData.Read()999							if c >= 'A' && c <= 'F' {1000								accept = true1001							} else {1002								p.ParserData.UnRead()1003								accept = false1004							}1005							if !accept {1006								c := p.ParserData.Read()1007								if c >= '0' && c <= '9' {1008									accept = true1009								} else {1010									p.ParserData.UnRead()1011									accept = false1012								}1013								if !accept {1014								}1015							}1016						}1017						if !accept {1018							p.ParserData.Seek(save)1019						}1020					}1021					if !accept {1022						p.ParserData.Seek(save)1023					} else {1024						for accept {1025							{1026								save := p.ParserData.Pos()1027								c := p.ParserData.Read()1028								if c >= 'a' && c <= 'f' {1029									accept = true1030								} else {1031									p.ParserData.UnRead()1032									accept = false1033								}1034								if !accept {1035									c := p.ParserData.Read()1036									if c >= 'A' && c <= 'F' {1037										accept = true1038									} else {1039										p.ParserData.UnRead()1040										accept = false1041									}1042									if !accept {1043										c := p.ParserData.Read()1044										if c >= '0' && c <= '9' {1045											accept = true1046										} else {1047											p.ParserData.UnRead()1048											accept = false1049										}1050										if !accept {1051										}1052									}1053								}1054								if !accept {1055									p.ParserData.Seek(save)1056								}1057							}1058						}1059						accept = true1060					}1061				}1062				if accept {1063				}1064			}1065			if !accept {1066				if p.LastError < p.ParserData.Pos() {1067					p.LastError = p.ParserData.Pos()1068				}1069				p.ParserData.Seek(save)1070			}1071		}1072		if !accept {1073			{1074				save := p.ParserData.Pos()1075				c := p.ParserData.Read()1076				if c >= '0' && c <= '9' {1077					accept = true1078				} else {1079					p.ParserData.UnRead()1080					accept = false1081				}1082				if !accept {1083					p.ParserData.Seek(save)1084				} else {1085					for accept {1086						c := p.ParserData.Read()1087						if c >= '0' && c <= '9' {1088							accept = true1089						} else {1090							p.ParserData.UnRead()1091							accept = false1092						}1093					}1094					accept = true1095				}1096			}1097			if !accept {1098			}1099		}1100		if !accept {1101			p.ParserData.Seek(save)1102		}1103	}1104	end := p.ParserData.Pos()1105	if accept {1106		node := p.Root.Cleanup(start, end)1107		node.Name = "Constant"1108		node.P = p1109		node.Range = node.Range.Clip(p.IgnoreRange)1110		p.Root.Append(node)1111	} else {1112		p.Root.Discard(start)1113	}1114	if p.IgnoreRange.A >= end || p.IgnoreRange.B <= start {1115		p.IgnoreRange = text.Region{}1116	}1117	return accept1118}1119func (p *EXPRESSION) Spacing() bool {1120	// Spacing         <-      [ \t\n\r]+1121	accept := false1122	accept = true1123	start := p.ParserData.Pos()1124	{1125		save := p.ParserData.Pos()1126		{1127			accept = false1128			c := p.ParserData.Read()1129			if c == ' ' || c == '\t' || c == '\n' || c == '\r' {1130				accept = true1131			} else {1132				p.ParserData.UnRead()1133			}1134		}1135		if !accept {1136			p.ParserData.Seek(save)1137		} else {1138			for accept {1139				{1140					accept = false1141					c := p.ParserData.Read()1142					if c == ' ' || c == '\t' || c == '\n' || c == '\r' {1143						accept = true1144					} else {1145						p.ParserData.UnRead()1146					}1147				}1148			}1149			accept = true1150		}1151	}1152	if accept && start != p.ParserData.Pos() {1153		if start < p.IgnoreRange.A || p.IgnoreRange.A == 0 {1154			p.IgnoreRange.A = start1155		}1156		p.IgnoreRange.B = p.ParserData.Pos()1157	}1158	return accept1159}1160func (p *EXPRESSION) EndOfFile() bool {1161	// EndOfFile       <-      !.1162	accept := false1163	accept = true1164	start := p.ParserData.Pos()1165	s := p.ParserData.Pos()1166	if p.ParserData.Pos() >= p.ParserData.Len() {1167		accept = false1168	} else {1169		p.ParserData.Read()1170		accept = true1171	}1172	p.ParserData.Seek(s)1173	p.Root.Discard(s)1174	accept = !accept1175	end := p.ParserData.Pos()1176	if accept {1177		node := p.Root.Cleanup(start, end)1178		node.Name = "EndOfFile"1179		node.P = p1180		node.Range = node.Range.Clip(p.IgnoreRange)1181		p.Root.Append(node)1182	} else {1183		p.Root.Discard(start)1184	}1185	if p.IgnoreRange.A >= end || p.IgnoreRange.B <= start {1186		p.IgnoreRange = text.Region{}1187	}1188	return accept1189}...

parser.go

Source:parser.go

...24			panic(r)25		}26	}()27	p.parseLines()28	p.accept(scanner.EOF)29	p.nodes = append(p.nodes, p.comments...)30	sort.Sort(byPosition(p.nodes))31	return p.nodes, p.errors32}33type parser struct {34	scanner  scanner.Scanner35	tok      rune36	errors   []error37	comments []Node38	nodes    []Node39	lines    []int40}41func NewParser(filename string, r io.Reader) *parser {42	p := &parser{}43	p.lines = []int{0}44	p.scanner.Init(r)45	p.scanner.Error = func(sc *scanner.Scanner, msg string) {46		p.errorf(msg)47	}48	p.scanner.Whitespace = 049	p.scanner.IsIdentRune = func(ch rune, i int) bool {50		return ch > 0 && ch != ':' && ch != '#' && ch != '=' && ch != '+' && ch != '$' &&51			ch != '\\' && ch != '(' && ch != ')' && ch != '{' && ch != '}' && ch != ';' &&52			ch != '|' && ch != '?' && ch != '\r' && !isWhitespace(ch)53	}54	p.scanner.Mode = scanner.ScanIdents55	p.scanner.Filename = filename56	p.next()57	return p58}59func (p *parser) Unpack(pos Pos) scanner.Position {60	offset := int(pos)61	line := sort.Search(len(p.lines), func(i int) bool { return p.lines[i] > offset }) - 162	return scanner.Position{63		Filename: p.scanner.Filename,64		Line:     line + 1,65		Column:   offset - p.lines[line] + 1,66		Offset:   offset,67	}68}69func (p *parser) pos() Pos {70	pos := p.scanner.Position71	if !pos.IsValid() {72		pos = p.scanner.Pos()73	}74	return Pos(pos.Offset)75}76func (p *parser) errorf(format string, args ...interface{}) {77	err := &ParseError{78		Err: fmt.Errorf(format, args...),79		Pos: p.scanner.Position,80	}81	p.errors = append(p.errors, err)82	if len(p.errors) >= maxErrors {83		panic(errTooManyErrors)84	}85}86func (p *parser) accept(toks ...rune) bool {87	for _, tok := range toks {88		if p.tok != tok {89			p.errorf("expected %s, found %s", scanner.TokenString(tok),90				scanner.TokenString(p.tok))91			return false92		}93		p.next()94	}95	return true96}97func (p *parser) next() {98	if p.tok != scanner.EOF {99		p.tok = p.scanner.Scan()100		for p.tok == '\r' {101			p.tok = p.scanner.Scan()102		}103	}104	if p.tok == '\n' {105		p.lines = append(p.lines, p.scanner.Position.Offset+1)106	}107}108func (p *parser) parseLines() {109	for {110		p.ignoreWhitespace()111		if p.parseDirective() {112			continue113		}114		ident := p.parseExpression('=', '?', ':', '#', '\n')115		p.ignoreSpaces()116		switch p.tok {117		case '?':118			p.accept('?')119			if p.tok == '=' {120				p.parseAssignment("?=", nil, ident)121			} else {122				p.errorf("expected = after ?")123			}124		case '+':125			p.accept('+')126			if p.tok == '=' {127				p.parseAssignment("+=", nil, ident)128			} else {129				p.errorf("expected = after +")130			}131		case ':':132			p.accept(':')133			switch p.tok {134			case '=':135				p.parseAssignment(":=", nil, ident)136			default:137				p.parseRule(ident)138			}139		case '=':140			p.parseAssignment("=", nil, ident)141		case '#', '\n', scanner.EOF:142			ident.TrimRightSpaces()143			if v, ok := toVariable(ident); ok {144				p.nodes = append(p.nodes, &v)145			} else if !ident.Empty() {146				p.errorf("expected directive, rule, or assignment after ident " + ident.Dump())147			}148			switch p.tok {149			case scanner.EOF:150				return151			case '\n':152				p.accept('\n')153			case '#':154				p.parseComment()155			}156		default:157			p.errorf("expected assignment or rule definition, found %s\n",158				p.scanner.TokenText())159			return160		}161	}162}163func (p *parser) parseDirective() bool {164	if p.tok != scanner.Ident || !isDirective(p.scanner.TokenText()) {165		return false166	}167	d := p.scanner.TokenText()168	pos := p.pos()169	p.accept(scanner.Ident)170	endPos := NoPos171	expression := SimpleMakeString("", pos)172	switch d {173	case "endif", "endef", "else":174		// Nothing175	case "define":176		expression, endPos = p.parseDefine()177	default:178		p.ignoreSpaces()179		expression = p.parseExpression()180	}181	p.nodes = append(p.nodes, &Directive{182		NamePos: pos,183		Name:    d,184		Args:    expression,185		EndPos:  endPos,186	})187	return true188}189func (p *parser) parseDefine() (*MakeString, Pos) {190	value := SimpleMakeString("", p.pos())191loop:192	for {193		switch p.tok {194		case scanner.Ident:195			value.appendString(p.scanner.TokenText())196			if p.scanner.TokenText() == "endef" {197				p.accept(scanner.Ident)198				break loop199			}200			p.accept(scanner.Ident)201		case '\\':202			p.parseEscape()203			switch p.tok {204			case '\n':205				value.appendString(" ")206			case scanner.EOF:207				p.errorf("expected escaped character, found %s",208					scanner.TokenString(p.tok))209				break loop210			default:211				value.appendString(`\` + string(p.tok))212			}213			p.accept(p.tok)214		//TODO: handle variables inside defines?  result depends if215		//define is used in make or rule context216		//case '$':217		//	variable := p.parseVariable()218		//	value.appendVariable(variable)219		case scanner.EOF:220			p.errorf("unexpected EOF while looking for endef")221			break loop222		default:223			value.appendString(p.scanner.TokenText())224			p.accept(p.tok)225		}226	}227	return value, p.pos()228}229func (p *parser) parseEscape() {230	p.scanner.Mode = 0231	p.accept('\\')232	p.scanner.Mode = scanner.ScanIdents233}234func (p *parser) parseExpression(end ...rune) *MakeString {235	value := SimpleMakeString("", p.pos())236	endParen := false237	for _, r := range end {238		if r == ')' {239			endParen = true240		}241	}242	parens := 0243loop:244	for {245		if endParen && parens > 0 && p.tok == ')' {246			parens--247			value.appendString(")")248			p.accept(')')249			continue250		}251		for _, r := range end {252			if p.tok == r {253				break loop254			}255		}256		switch p.tok {257		case '\n':258			break loop259		case scanner.Ident:260			value.appendString(p.scanner.TokenText())261			p.accept(scanner.Ident)262		case '\\':263			p.parseEscape()264			switch p.tok {265			case '\n':266				value.appendString(" ")267			case scanner.EOF:268				p.errorf("expected escaped character, found %s",269					scanner.TokenString(p.tok))270				return value271			default:272				value.appendString(`\` + string(p.tok))273			}274			p.accept(p.tok)275		case '#':276			p.parseComment()277			break loop278		case '$':279			var variable Variable280			variable = p.parseVariable()281			value.appendVariable(variable)282		case scanner.EOF:283			break loop284		case '(':285			if endParen {286				parens++287			}288			value.appendString("(")289			p.accept('(')290		default:291			value.appendString(p.scanner.TokenText())292			p.accept(p.tok)293		}294	}295	if parens > 0 {296		p.errorf("expected closing paren %s", value.Dump())297	}298	return value299}300func (p *parser) parseVariable() Variable {301	pos := p.pos()302	p.accept('$')303	var name *MakeString304	switch p.tok {305	case '(':306		return p.parseBracketedVariable('(', ')', pos)307	case '{':308		return p.parseBracketedVariable('{', '}', pos)309	case '$':310		name = SimpleMakeString("__builtin_dollar", NoPos)311	case scanner.EOF:312		p.errorf("expected variable name, found %s",313			scanner.TokenString(p.tok))314	default:315		name = p.parseExpression(variableNameEndRunes...)316	}317	return p.nameToVariable(name)318}319func (p *parser) parseBracketedVariable(start, end rune, pos Pos) Variable {320	p.accept(start)321	name := p.parseExpression(end)322	p.accept(end)323	return p.nameToVariable(name)324}325func (p *parser) nameToVariable(name *MakeString) Variable {326	return Variable{327		Name: name,328	}329}330func (p *parser) parseRule(target *MakeString) {331	prerequisites, newLine := p.parseRulePrerequisites(target)332	recipe := ""333	recipePos := p.pos()334loop:335	for {336		if newLine {337			if p.tok == '\t' {338				p.accept('\t')339				newLine = false340				continue loop341			} else if p.parseDirective() {342				newLine = false343				continue344			} else {345				break loop346			}347		}348		newLine = false349		switch p.tok {350		case '\\':351			p.parseEscape()352			recipe += string(p.tok)353			p.accept(p.tok)354		case '\n':355			newLine = true356			recipe += "\n"357			p.accept('\n')358		case scanner.EOF:359			break loop360		default:361			recipe += p.scanner.TokenText()362			p.accept(p.tok)363		}364	}365	if prerequisites != nil {366		p.nodes = append(p.nodes, &Rule{367			Target:        target,368			Prerequisites: prerequisites,369			Recipe:        recipe,370			RecipePos:     recipePos,371		})372	}373}374func (p *parser) parseRulePrerequisites(target *MakeString) (*MakeString, bool) {375	newLine := false376	p.ignoreSpaces()377	prerequisites := p.parseExpression('#', '\n', ';', ':', '=')378	switch p.tok {379	case '\n':380		p.accept('\n')381		newLine = true382	case '#':383		p.parseComment()384		newLine = true385	case ';':386		p.accept(';')387	case ':':388		p.accept(':')389		if p.tok == '=' {390			p.parseAssignment(":=", target, prerequisites)391			return nil, true392		} else {393			more := p.parseExpression('#', '\n', ';')394			prerequisites.appendMakeString(more)395		}396	case '=':397		p.parseAssignment("=", target, prerequisites)398		return nil, true399	default:400		p.errorf("unexpected token %s after rule prerequisites", scanner.TokenString(p.tok))401	}402	return prerequisites, newLine403}404func (p *parser) parseComment() {405	pos := p.pos()406	p.accept('#')407	comment := ""408loop:409	for {410		switch p.tok {411		case '\\':412			p.parseEscape()413			if p.tok == '\n' {414				comment += "\n"415			} else {416				comment += "\\" + p.scanner.TokenText()417			}418			p.accept(p.tok)419		case '\n':420			p.accept('\n')421			break loop422		case scanner.EOF:423			break loop424		default:425			comment += p.scanner.TokenText()426			p.accept(p.tok)427		}428	}429	p.comments = append(p.comments, &Comment{430		CommentPos: pos,431		Comment:    comment,432	})433}434func (p *parser) parseAssignment(t string, target *MakeString, ident *MakeString) {435	// The value of an assignment is everything including and after the first436	// non-whitespace character after the = until the end of the logical line,437	// which may included escaped newlines438	p.accept('=')439	value := p.parseExpression()440	value.TrimLeftSpaces()441	if ident.EndsWith('+') && t == "=" {442		ident.TrimRightOne()443		t = "+="444	}445	ident.TrimRightSpaces()446	p.nodes = append(p.nodes, &Assignment{447		Name:   ident,448		Value:  value,449		Target: target,450		Type:   t,451	})452}453type androidMkModule struct {454	assignments map[string]string455}456type androidMkFile struct {457	assignments map[string]string458	modules     []androidMkModule459	includes    []string460}461var directives = [...]string{462	"define",463	"else",464	"endef",465	"endif",466	"ifdef",467	"ifeq",468	"ifndef",469	"ifneq",470	"include",471	"-include",472}473var functions = [...]string{474	"abspath",475	"addprefix",476	"addsuffix",477	"basename",478	"dir",479	"notdir",480	"subst",481	"suffix",482	"filter",483	"filter-out",484	"findstring",485	"firstword",486	"flavor",487	"join",488	"lastword",489	"patsubst",490	"realpath",491	"shell",492	"sort",493	"strip",494	"wildcard",495	"word",496	"wordlist",497	"words",498	"origin",499	"foreach",500	"call",501	"info",502	"error",503	"warning",504	"if",505	"or",506	"and",507	"value",508	"eval",509	"file",510}511func init() {512	sort.Strings(directives[:])513	sort.Strings(functions[:])514}515func isDirective(s string) bool {516	for _, d := range directives {517		if s == d {518			return true519		} else if s < d {520			return false521		}522	}523	return false524}525func isFunctionName(s string) bool {526	for _, f := range functions {527		if s == f {528			return true529		} else if s < f {530			return false531		}532	}533	return false534}535func isWhitespace(ch rune) bool {536	return ch == ' ' || ch == '\t' || ch == '\n'537}538func isValidVariableRune(ch rune) bool {539	return ch != scanner.Ident && ch != ':' && ch != '=' && ch != '#'540}541var whitespaceRunes = []rune{' ', '\t', '\n'}542var variableNameEndRunes = append([]rune{':', '=', '#', ')', '}'}, whitespaceRunes...)543func (p *parser) ignoreSpaces() int {544	skipped := 0545	for p.tok == ' ' || p.tok == '\t' {546		p.accept(p.tok)547		skipped++548	}549	return skipped550}551func (p *parser) ignoreWhitespace() {552	for isWhitespace(p.tok) {553		p.accept(p.tok)554	}555}...

Using AI Code Generation

1import (2func main() {3func main() {4	fmt.Println("Hello, 世界")5}6	f, err := parser.ParseFile(fset, "hello.go", src, 0)7	if err != nil {8		fmt.Println(err)9	}10	parser.Print(fset, f)11}12func main() {13	fmt.Println("Hello, 世界")14}15import (16func main() {17func main() {18	fmt.Println("Hello, 世界")19}20	f, err := parser.ParseFile(fset, "hello.go", src, 0)21	if err != nil {22		fmt.Println(err)23	}24	ast.Print(fset, f)25}26func main() {27	fmt.Println("Hello, 世界")28}29import (30func main() {31	expr, err := parser.ParseExpr(src)32	if err != nil {33		fmt.Println(err)34	}35	ast.Print(fset, expr)36}37import (38func main() {39func main() {40	fmt.Println("Hello, 世界")41}

Using AI Code Generation

1import (2func main() {3	src := []byte(`package main4import "fmt"5func main() {6	fmt.Println("Hello, World!")7}`)8	fset := token.NewFileSet()9	f, err := parser.ParseFile(fset, "", src, parser.ParseComments)10	if err != nil {11		fmt.Println(err)12	}13	fmt.Println(f.Name)14}

Using AI Code Generation

1import "fmt"2type Parser interface {3    Parse()4}5type MyParser struct {6}7func (p *MyParser) Parse() {8    fmt.Println("Parsing data")9}10func main() {11    var parser Parser = &MyParser{}12    parser.Parse()13}

Using AI Code Generation

1import (2func main() {3	p := parser.NewParser()4	p.Accept("abc")5	fmt.Println(p)6}7import (8func main() {9	p := parser.NewParser()10	fmt.Println(p)11}12import (13func main() {14	p := parser.NewParser()15	fmt.Println(p)16}17import (18func main() {19	p := parser.NewParser()20	fmt.Println(p)21}22import (23func main() {24	p := parser.NewParser()25	fmt.Println(p)26}27import (28func main() {29	p := parser.NewParser()30	fmt.Println(p)31}32import (33func main() {34	p := parser.NewParser()35	fmt.Println(p)36}37import (38func main() {39	p := parser.NewParser()40	fmt.Println(p)41}42import (43func main() {44	p := parser.NewParser()45	fmt.Println(p)46}47import (48func main() {49	p := parser.NewParser()50	fmt.Println(p)51}52import (53func main() {54	p := parser.NewParser()55	fmt.Println(p)56}

Using AI Code Generation

1import java.io.*;2{3public static void main(String args[])4{5String s="a+b*c";6Parser p=new Parser();7p.accept(s);8p.parse();9}10}11import java.io.*;12{13String s;14int i;15public void accept(String str)16{17s=str;18i=0;19}20public void parse()21{22E();23}24public void E()25{26T();27Ep();28}29public void Ep()30{31if(i<s.length())32{33if(s.charAt(i)=='+')34{35i++;36T();37Ep();38}39{40return;41}42}43}44public void T()45{46F();47Tp();48}49public void Tp()50{51if(i<s.length())52{53if(s.charAt(i)=='*')54{55i++;56F();57Tp();58}59{60return;61}62}63}64public void F()65{66if(s.charAt(i)=='a')67{68i++;69}70else if(s.charAt(i)=='(')71{72i++;73E();74if(s.charAt(i)==')')75{76i++;77}78}79}80}

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.