Rename package and address warnings
This commit is contained in:
Guille Gonzalez
960
Sources/SwiftUIMath/MathRender/MTMathAtomFactory.swift
Normal file
960
Sources/SwiftUIMath/MathRender/MTMathAtomFactory.swift
Normal file
@@ -0,0 +1,960 @@
|
||||
//
|
||||
// Created by Mike Griebling on 2022-12-31.
|
||||
// Translated from an Objective-C implementation by Kostub Deshmukh.
|
||||
//
|
||||
// This software may be modified and distributed under the terms of the
|
||||
// MIT license. See the LICENSE file for details.
|
||||
//
|
||||
|
||||
import Foundation
|
||||
|
||||
/** A factory to create commonly used MTMathAtoms. */
|
||||
public class MTMathAtomFactory {
|
||||
|
||||
public static let aliases = [
|
||||
"lnot" : "neg",
|
||||
"land" : "wedge",
|
||||
"lor" : "vee",
|
||||
"ne" : "neq",
|
||||
"le" : "leq",
|
||||
"ge" : "geq",
|
||||
"lbrace" : "{",
|
||||
"rbrace" : "}",
|
||||
"Vert" : "|",
|
||||
"gets" : "leftarrow",
|
||||
"to" : "rightarrow",
|
||||
"iff" : "Longleftrightarrow",
|
||||
"AA" : "angstrom"
|
||||
]
|
||||
|
||||
public static let delimiters = [
|
||||
"." : "", // . means no delimiter
|
||||
"(" : "(",
|
||||
")" : ")",
|
||||
"[" : "[",
|
||||
"]" : "]",
|
||||
"<" : "\u{2329}",
|
||||
">" : "\u{232A}",
|
||||
"/" : "/",
|
||||
"\\" : "\\",
|
||||
"|" : "|",
|
||||
"lgroup" : "\u{27EE}",
|
||||
"rgroup" : "\u{27EF}",
|
||||
"||" : "\u{2016}",
|
||||
"Vert" : "\u{2016}",
|
||||
"vert" : "|",
|
||||
"uparrow" : "\u{2191}",
|
||||
"downarrow" : "\u{2193}",
|
||||
"updownarrow" : "\u{2195}",
|
||||
"Uparrow" : "\u{21D1}",
|
||||
"Downarrow" : "\u{21D3}",
|
||||
"Updownarrow" : "\u{21D5}",
|
||||
"backslash" : "\\",
|
||||
"rangle" : "\u{232A}",
|
||||
"langle" : "\u{2329}",
|
||||
"rbrace" : "}",
|
||||
"}" : "}",
|
||||
"{" : "{",
|
||||
"lbrace" : "{",
|
||||
"lceil" : "\u{2308}",
|
||||
"rceil" : "\u{2309}",
|
||||
"lfloor" : "\u{230A}",
|
||||
"rfloor" : "\u{230B}"
|
||||
]
|
||||
|
||||
private static let delimValueLock = NSLock()
|
||||
static var _delimValueToName = [String: String]()
|
||||
public static var delimValueToName: [String: String] {
|
||||
if _delimValueToName.isEmpty {
|
||||
var output = [String: String]()
|
||||
for (key, value) in Self.delimiters {
|
||||
if let existingValue = output[value] {
|
||||
if key.count > existingValue.count {
|
||||
continue
|
||||
} else if key.count == existingValue.count {
|
||||
if key.compare(existingValue) == .orderedDescending {
|
||||
continue
|
||||
}
|
||||
}
|
||||
}
|
||||
output[value] = key
|
||||
}
|
||||
// protect lazily loading table in a multi-thread concurrent environment
|
||||
delimValueLock.lock()
|
||||
defer { delimValueLock.unlock() }
|
||||
if _delimValueToName.isEmpty {
|
||||
_delimValueToName = output
|
||||
}
|
||||
}
|
||||
return _delimValueToName
|
||||
}
|
||||
|
||||
public static let accents = [
|
||||
"grave" : "\u{0300}",
|
||||
"acute" : "\u{0301}",
|
||||
"hat" : "\u{0302}", // In our implementation hat and widehat behave the same.
|
||||
"tilde" : "\u{0303}", // In our implementation tilde and widetilde behave the same.
|
||||
"bar" : "\u{0304}",
|
||||
"breve" : "\u{0306}",
|
||||
"dot" : "\u{0307}",
|
||||
"ddot" : "\u{0308}",
|
||||
"check" : "\u{030C}",
|
||||
"vec" : "\u{20D7}",
|
||||
"widehat" : "\u{0302}",
|
||||
"widetilde" : "\u{0303}"
|
||||
]
|
||||
|
||||
private static let accentValueLock = NSLock()
|
||||
static var _accentValueToName: [String: String]? = nil
|
||||
public static var accentValueToName: [String: String] {
|
||||
if _accentValueToName == nil {
|
||||
var output = [String: String]()
|
||||
|
||||
for (key, value) in Self.accents {
|
||||
if let existingValue = output[value] {
|
||||
if key.count > existingValue.count {
|
||||
continue
|
||||
} else if key.count == existingValue.count {
|
||||
if key.compare(existingValue) == .orderedDescending {
|
||||
continue
|
||||
}
|
||||
}
|
||||
}
|
||||
output[value] = key
|
||||
}
|
||||
// protect lazily loading table in a multi-thread concurrent environment
|
||||
accentValueLock.lock()
|
||||
defer { accentValueLock.unlock() }
|
||||
if _accentValueToName == nil {
|
||||
_accentValueToName = output
|
||||
}
|
||||
}
|
||||
return _accentValueToName!
|
||||
}
|
||||
|
||||
static var supportedLatexSymbolNames:[String] {
|
||||
let commands = MTMathAtomFactory.supportedLatexSymbols
|
||||
return commands.keys.map { String($0) }
|
||||
}
|
||||
|
||||
static var supportedLatexSymbols: [String: MTMathAtom] = [
|
||||
"square" : MTMathAtomFactory.placeholder(),
|
||||
|
||||
// Greek characters
|
||||
"alpha" : MTMathAtom(type: .variable, value: "\u{03B1}"),
|
||||
"beta" : MTMathAtom(type: .variable, value: "\u{03B2}"),
|
||||
"gamma" : MTMathAtom(type: .variable, value: "\u{03B3}"),
|
||||
"delta" : MTMathAtom(type: .variable, value: "\u{03B4}"),
|
||||
"varepsilon" : MTMathAtom(type: .variable, value: "\u{03B5}"),
|
||||
"zeta" : MTMathAtom(type: .variable, value: "\u{03B6}"),
|
||||
"eta" : MTMathAtom(type: .variable, value: "\u{03B7}"),
|
||||
"theta" : MTMathAtom(type: .variable, value: "\u{03B8}"),
|
||||
"iota" : MTMathAtom(type: .variable, value: "\u{03B9}"),
|
||||
"kappa" : MTMathAtom(type: .variable, value: "\u{03BA}"),
|
||||
"lambda" : MTMathAtom(type: .variable, value: "\u{03BB}"),
|
||||
"mu" : MTMathAtom(type: .variable, value: "\u{03BC}"),
|
||||
"nu" : MTMathAtom(type: .variable, value: "\u{03BD}"),
|
||||
"xi" : MTMathAtom(type: .variable, value: "\u{03BE}"),
|
||||
"omicron" : MTMathAtom(type: .variable, value: "\u{03BF}"),
|
||||
"pi" : MTMathAtom(type: .variable, value: "\u{03C0}"),
|
||||
"rho" : MTMathAtom(type: .variable, value: "\u{03C1}"),
|
||||
"varsigma" : MTMathAtom(type: .variable, value: "\u{03C1}"),
|
||||
"sigma" : MTMathAtom(type: .variable, value: "\u{03C3}"),
|
||||
"tau" : MTMathAtom(type: .variable, value: "\u{03C4}"),
|
||||
"upsilon" : MTMathAtom(type: .variable, value: "\u{03C5}"),
|
||||
"varphi" : MTMathAtom(type: .variable, value: "\u{03C6}"),
|
||||
"chi" : MTMathAtom(type: .variable, value: "\u{03C7}"),
|
||||
"psi" : MTMathAtom(type: .variable, value: "\u{03C8}"),
|
||||
"omega" : MTMathAtom(type: .variable, value: "\u{03C9}"),
|
||||
// We mark the following greek chars as ordinary so that we don't try
|
||||
// to automatically italicize them as we do with variables.
|
||||
// These characters fall outside the rules of italicization that we have defined.
|
||||
"epsilon" : MTMathAtom(type: .ordinary, value: "\u{0001D716}"),
|
||||
"vartheta" : MTMathAtom(type: .ordinary, value: "\u{0001D717}"),
|
||||
"phi" : MTMathAtom(type: .ordinary, value: "\u{0001D719}"),
|
||||
"varrho" : MTMathAtom(type: .ordinary, value: "\u{0001D71A}"),
|
||||
"varpi" : MTMathAtom(type: .ordinary, value: "\u{0001D71B}"),
|
||||
|
||||
// Capital greek characters
|
||||
"Gamma" : MTMathAtom(type: .variable, value: "\u{0393}"),
|
||||
"Delta" : MTMathAtom(type: .variable, value: "\u{0394}"),
|
||||
"Theta" : MTMathAtom(type: .variable, value: "\u{0398}"),
|
||||
"Lambda" : MTMathAtom(type: .variable, value: "\u{039B}"),
|
||||
"Xi" : MTMathAtom(type: .variable, value: "\u{039E}"),
|
||||
"Pi" : MTMathAtom(type: .variable, value: "\u{03A0}"),
|
||||
"Sigma" : MTMathAtom(type: .variable, value: "\u{03A3}"),
|
||||
"Upsilon" : MTMathAtom(type: .variable, value: "\u{03A5}"),
|
||||
"Phi" : MTMathAtom(type: .variable, value: "\u{03A6}"),
|
||||
"Psi" : MTMathAtom(type: .variable, value: "\u{03A8}"),
|
||||
"Omega" : MTMathAtom(type: .variable, value: "\u{03A9}"),
|
||||
|
||||
// Open
|
||||
"lceil" : MTMathAtom(type: .open, value: "\u{2308}"),
|
||||
"lfloor" : MTMathAtom(type: .open, value: "\u{230A}"),
|
||||
"langle" : MTMathAtom(type: .open, value: "\u{27E8}"),
|
||||
"lgroup" : MTMathAtom(type: .open, value: "\u{27EE}"),
|
||||
|
||||
// Close
|
||||
"rceil" : MTMathAtom(type: .close, value: "\u{2309}"),
|
||||
"rfloor" : MTMathAtom(type: .close, value: "\u{230B}"),
|
||||
"rangle" : MTMathAtom(type: .close, value: "\u{27E9}"),
|
||||
"rgroup" : MTMathAtom(type: .close, value: "\u{27EF}"),
|
||||
|
||||
// Arrows
|
||||
"leftarrow" : MTMathAtom(type: .relation, value: "\u{2190}"),
|
||||
"uparrow" : MTMathAtom(type: .relation, value: "\u{2191}"),
|
||||
"rightarrow" : MTMathAtom(type: .relation, value: "\u{2192}"),
|
||||
"downarrow" : MTMathAtom(type: .relation, value: "\u{2193}"),
|
||||
"leftrightarrow" : MTMathAtom(type: .relation, value: "\u{2194}"),
|
||||
"updownarrow" : MTMathAtom(type: .relation, value: "\u{2195}"),
|
||||
"nwarrow" : MTMathAtom(type: .relation, value: "\u{2196}"),
|
||||
"nearrow" : MTMathAtom(type: .relation, value: "\u{2197}"),
|
||||
"searrow" : MTMathAtom(type: .relation, value: "\u{2198}"),
|
||||
"swarrow" : MTMathAtom(type: .relation, value: "\u{2199}"),
|
||||
"mapsto" : MTMathAtom(type: .relation, value: "\u{21A6}"),
|
||||
"Leftarrow" : MTMathAtom(type: .relation, value: "\u{21D0}"),
|
||||
"Uparrow" : MTMathAtom(type: .relation, value: "\u{21D1}"),
|
||||
"Rightarrow" : MTMathAtom(type: .relation, value: "\u{21D2}"),
|
||||
"Downarrow" : MTMathAtom(type: .relation, value: "\u{21D3}"),
|
||||
"Leftrightarrow" : MTMathAtom(type: .relation, value: "\u{21D4}"),
|
||||
"Updownarrow" : MTMathAtom(type: .relation, value: "\u{21D5}"),
|
||||
"longleftarrow" : MTMathAtom(type: .relation, value: "\u{27F5}"),
|
||||
"longrightarrow" : MTMathAtom(type: .relation, value: "\u{27F6}"),
|
||||
"longleftrightarrow" : MTMathAtom(type: .relation, value: "\u{27F7}"),
|
||||
"Longleftarrow" : MTMathAtom(type: .relation, value: "\u{27F8}"),
|
||||
"Longrightarrow" : MTMathAtom(type: .relation, value: "\u{27F9}"),
|
||||
"Longleftrightarrow" : MTMathAtom(type: .relation, value: "\u{27FA}"),
|
||||
|
||||
|
||||
// Relations
|
||||
"leq" : MTMathAtom(type: .relation, value: UnicodeSymbol.lessEqual),
|
||||
"geq" : MTMathAtom(type: .relation, value: UnicodeSymbol.greaterEqual),
|
||||
"neq" : MTMathAtom(type: .relation, value: UnicodeSymbol.notEqual),
|
||||
"in" : MTMathAtom(type: .relation, value: "\u{2208}"),
|
||||
"notin" : MTMathAtom(type: .relation, value: "\u{2209}"),
|
||||
"ni" : MTMathAtom(type: .relation, value: "\u{220B}"),
|
||||
"propto" : MTMathAtom(type: .relation, value: "\u{221D}"),
|
||||
"mid" : MTMathAtom(type: .relation, value: "\u{2223}"),
|
||||
"parallel" : MTMathAtom(type: .relation, value: "\u{2225}"),
|
||||
"sim" : MTMathAtom(type: .relation, value: "\u{223C}"),
|
||||
"simeq" : MTMathAtom(type: .relation, value: "\u{2243}"),
|
||||
"cong" : MTMathAtom(type: .relation, value: "\u{2245}"),
|
||||
"approx" : MTMathAtom(type: .relation, value: "\u{2248}"),
|
||||
"asymp" : MTMathAtom(type: .relation, value: "\u{224D}"),
|
||||
"doteq" : MTMathAtom(type: .relation, value: "\u{2250}"),
|
||||
"equiv" : MTMathAtom(type: .relation, value: "\u{2261}"),
|
||||
"gg" : MTMathAtom(type: .relation, value: "\u{226B}"),
|
||||
"ll" : MTMathAtom(type: .relation, value: "\u{226A}"),
|
||||
"prec" : MTMathAtom(type: .relation, value: "\u{227A}"),
|
||||
"succ" : MTMathAtom(type: .relation, value: "\u{227B}"),
|
||||
"subset" : MTMathAtom(type: .relation, value: "\u{2282}"),
|
||||
"supset" : MTMathAtom(type: .relation, value: "\u{2283}"),
|
||||
"subseteq" : MTMathAtom(type: .relation, value: "\u{2286}"),
|
||||
"supseteq" : MTMathAtom(type: .relation, value: "\u{2287}"),
|
||||
"sqsubset" : MTMathAtom(type: .relation, value: "\u{228F}"),
|
||||
"sqsupset" : MTMathAtom(type: .relation, value: "\u{2290}"),
|
||||
"sqsubseteq" : MTMathAtom(type: .relation, value: "\u{2291}"),
|
||||
"sqsupseteq" : MTMathAtom(type: .relation, value: "\u{2292}"),
|
||||
"models" : MTMathAtom(type: .relation, value: "\u{22A7}"),
|
||||
"perp" : MTMathAtom(type: .relation, value: "\u{27C2}"),
|
||||
"implies" : MTMathAtom(type: .relation, value: "\u{27F9}"),
|
||||
|
||||
// operators
|
||||
"times" : MTMathAtomFactory.times(),
|
||||
"div" : MTMathAtomFactory.divide(),
|
||||
"pm" : MTMathAtom(type: .binaryOperator, value: "\u{00B1}"),
|
||||
"dagger" : MTMathAtom(type: .binaryOperator, value: "\u{2020}"),
|
||||
"ddagger" : MTMathAtom(type: .binaryOperator, value: "\u{2021}"),
|
||||
"mp" : MTMathAtom(type: .binaryOperator, value: "\u{2213}"),
|
||||
"setminus" : MTMathAtom(type: .binaryOperator, value: "\u{2216}"),
|
||||
"ast" : MTMathAtom(type: .binaryOperator, value: "\u{2217}"),
|
||||
"circ" : MTMathAtom(type: .binaryOperator, value: "\u{2218}"),
|
||||
"bullet" : MTMathAtom(type: .binaryOperator, value: "\u{2219}"),
|
||||
"wedge" : MTMathAtom(type: .binaryOperator, value: "\u{2227}"),
|
||||
"vee" : MTMathAtom(type: .binaryOperator, value: "\u{2228}"),
|
||||
"cap" : MTMathAtom(type: .binaryOperator, value: "\u{2229}"),
|
||||
"cup" : MTMathAtom(type: .binaryOperator, value: "\u{222A}"),
|
||||
"wr" : MTMathAtom(type: .binaryOperator, value: "\u{2240}"),
|
||||
"uplus" : MTMathAtom(type: .binaryOperator, value: "\u{228E}"),
|
||||
"sqcap" : MTMathAtom(type: .binaryOperator, value: "\u{2293}"),
|
||||
"sqcup" : MTMathAtom(type: .binaryOperator, value: "\u{2294}"),
|
||||
"oplus" : MTMathAtom(type: .binaryOperator, value: "\u{2295}"),
|
||||
"ominus" : MTMathAtom(type: .binaryOperator, value: "\u{2296}"),
|
||||
"otimes" : MTMathAtom(type: .binaryOperator, value: "\u{2297}"),
|
||||
"oslash" : MTMathAtom(type: .binaryOperator, value: "\u{2298}"),
|
||||
"odot" : MTMathAtom(type: .binaryOperator, value: "\u{2299}"),
|
||||
"star" : MTMathAtom(type: .binaryOperator, value: "\u{22C6}"),
|
||||
"cdot" : MTMathAtom(type: .binaryOperator, value: "\u{22C5}"),
|
||||
"amalg" : MTMathAtom(type: .binaryOperator, value: "\u{2A3F}"),
|
||||
|
||||
// No limit operators
|
||||
"log" : MTMathAtomFactory.operatorWithName( "log", limits: false),
|
||||
"lg" : MTMathAtomFactory.operatorWithName( "lg", limits: false),
|
||||
"ln" : MTMathAtomFactory.operatorWithName( "ln", limits: false),
|
||||
"sin" : MTMathAtomFactory.operatorWithName( "sin", limits: false),
|
||||
"arcsin" : MTMathAtomFactory.operatorWithName( "arcsin", limits: false),
|
||||
"sinh" : MTMathAtomFactory.operatorWithName( "sinh", limits: false),
|
||||
"cos" : MTMathAtomFactory.operatorWithName( "cos", limits: false),
|
||||
"arccos" : MTMathAtomFactory.operatorWithName( "arccos", limits: false),
|
||||
"cosh" : MTMathAtomFactory.operatorWithName( "cosh", limits: false),
|
||||
"tan" : MTMathAtomFactory.operatorWithName( "tan", limits: false),
|
||||
"arctan" : MTMathAtomFactory.operatorWithName( "arctan", limits: false),
|
||||
"tanh" : MTMathAtomFactory.operatorWithName( "tanh", limits: false),
|
||||
"cot" : MTMathAtomFactory.operatorWithName( "cot", limits: false),
|
||||
"coth" : MTMathAtomFactory.operatorWithName( "coth", limits: false),
|
||||
"sec" : MTMathAtomFactory.operatorWithName( "sec", limits: false),
|
||||
"csc" : MTMathAtomFactory.operatorWithName( "csc", limits: false),
|
||||
"arg" : MTMathAtomFactory.operatorWithName( "arg", limits: false),
|
||||
"ker" : MTMathAtomFactory.operatorWithName( "ker", limits: false),
|
||||
"dim" : MTMathAtomFactory.operatorWithName( "dim", limits: false),
|
||||
"hom" : MTMathAtomFactory.operatorWithName( "hom", limits: false),
|
||||
"exp" : MTMathAtomFactory.operatorWithName( "exp", limits: false),
|
||||
"deg" : MTMathAtomFactory.operatorWithName( "deg", limits: false),
|
||||
"mod" : MTMathAtomFactory.operatorWithName("mod", limits: false),
|
||||
|
||||
// Limit operators
|
||||
"lim" : MTMathAtomFactory.operatorWithName( "lim", limits: true),
|
||||
"limsup" : MTMathAtomFactory.operatorWithName( "lim sup", limits: true),
|
||||
"liminf" : MTMathAtomFactory.operatorWithName( "lim inf", limits: true),
|
||||
"max" : MTMathAtomFactory.operatorWithName( "max", limits: true),
|
||||
"min" : MTMathAtomFactory.operatorWithName( "min", limits: true),
|
||||
"sup" : MTMathAtomFactory.operatorWithName( "sup", limits: true),
|
||||
"inf" : MTMathAtomFactory.operatorWithName( "inf", limits: true),
|
||||
"det" : MTMathAtomFactory.operatorWithName( "det", limits: true),
|
||||
"Pr" : MTMathAtomFactory.operatorWithName( "Pr", limits: true),
|
||||
"gcd" : MTMathAtomFactory.operatorWithName( "gcd", limits: true),
|
||||
|
||||
// Large operators
|
||||
"prod" : MTMathAtomFactory.operatorWithName( "\u{220F}", limits: true),
|
||||
"coprod" : MTMathAtomFactory.operatorWithName( "\u{2210}", limits: true),
|
||||
"sum" : MTMathAtomFactory.operatorWithName( "\u{2211}", limits: true),
|
||||
"int" : MTMathAtomFactory.operatorWithName( "\u{222B}", limits: false),
|
||||
"iint" : MTMathAtomFactory.operatorWithName( "\u{222C}", limits: false),
|
||||
"iiint" : MTMathAtomFactory.operatorWithName( "\u{222D}", limits: false),
|
||||
"iiiint" : MTMathAtomFactory.operatorWithName( "\u{2A0C}", limits: false),
|
||||
"oint" : MTMathAtomFactory.operatorWithName( "\u{222E}", limits: false),
|
||||
"bigwedge" : MTMathAtomFactory.operatorWithName( "\u{22C0}", limits: true),
|
||||
"bigvee" : MTMathAtomFactory.operatorWithName( "\u{22C1}", limits: true),
|
||||
"bigcap" : MTMathAtomFactory.operatorWithName( "\u{22C2}", limits: true),
|
||||
"bigcup" : MTMathAtomFactory.operatorWithName( "\u{22C3}", limits: true),
|
||||
"bigodot" : MTMathAtomFactory.operatorWithName( "\u{2A00}", limits: true),
|
||||
"bigoplus" : MTMathAtomFactory.operatorWithName( "\u{2A01}", limits: true),
|
||||
"bigotimes" : MTMathAtomFactory.operatorWithName( "\u{2A02}", limits: true),
|
||||
"biguplus" : MTMathAtomFactory.operatorWithName( "\u{2A04}", limits: true),
|
||||
"bigsqcup" : MTMathAtomFactory.operatorWithName( "\u{2A06}", limits: true),
|
||||
|
||||
// Latex command characters
|
||||
"{" : MTMathAtom(type: .open, value: "{"),
|
||||
"}" : MTMathAtom(type: .close, value: "}"),
|
||||
"$" : MTMathAtom(type: .ordinary, value: "$"),
|
||||
"&" : MTMathAtom(type: .ordinary, value: "&"),
|
||||
"#" : MTMathAtom(type: .ordinary, value: "#"),
|
||||
"%" : MTMathAtom(type: .ordinary, value: "%"),
|
||||
"_" : MTMathAtom(type: .ordinary, value: "_"),
|
||||
" " : MTMathAtom(type: .ordinary, value: " "),
|
||||
"backslash" : MTMathAtom(type: .ordinary, value: "\\"),
|
||||
|
||||
// Punctuation
|
||||
// Note: \colon is different from : which is a relation
|
||||
"colon" : MTMathAtom(type: .punctuation, value: ":"),
|
||||
"cdotp" : MTMathAtom(type: .punctuation, value: "\u{00B7}"),
|
||||
|
||||
// Other symbols
|
||||
"degree" : MTMathAtom(type: .ordinary, value: "\u{00B0}"),
|
||||
"neg" : MTMathAtom(type: .ordinary, value: "\u{00AC}"),
|
||||
"angstrom" : MTMathAtom(type: .ordinary, value: "\u{00C5}"),
|
||||
"aa" : MTMathAtom(type: .ordinary, value: "\u{00E5}"), // NEW å
|
||||
"ae" : MTMathAtom(type: .ordinary, value: "\u{00E6}"), // NEW æ
|
||||
"o" : MTMathAtom(type: .ordinary, value: "\u{00F8}"), // NEW ø
|
||||
"oe" : MTMathAtom(type: .ordinary, value: "\u{0153}"), // NEW œ
|
||||
"ss" : MTMathAtom(type: .ordinary, value: "\u{00DF}"), // NEW ß
|
||||
"cc" : MTMathAtom(type: .ordinary, value: "\u{00E7}"), // NEW ç
|
||||
"CC" : MTMathAtom(type: .ordinary, value: "\u{00C7}"), // NEW Ç
|
||||
"O" : MTMathAtom(type: .ordinary, value: "\u{00D8}"), // NEW Ø
|
||||
"AE" : MTMathAtom(type: .ordinary, value: "\u{00C6}"), // NEW Æ
|
||||
"OE" : MTMathAtom(type: .ordinary, value: "\u{0152}"), // NEW Œ
|
||||
"|" : MTMathAtom(type: .ordinary, value: "\u{2016}"),
|
||||
"vert" : MTMathAtom(type: .ordinary, value: "|"),
|
||||
"ldots" : MTMathAtom(type: .ordinary, value: "\u{2026}"),
|
||||
"prime" : MTMathAtom(type: .ordinary, value: "\u{2032}"),
|
||||
"hbar" : MTMathAtom(type: .ordinary, value: "\u{210F}"),
|
||||
"lbar" : MTMathAtom(type: .ordinary, value: "\u{019B}"), // NEW ƛ
|
||||
"Im" : MTMathAtom(type: .ordinary, value: "\u{2111}"),
|
||||
"ell" : MTMathAtom(type: .ordinary, value: "\u{2113}"),
|
||||
"wp" : MTMathAtom(type: .ordinary, value: "\u{2118}"),
|
||||
"Re" : MTMathAtom(type: .ordinary, value: "\u{211C}"),
|
||||
"mho" : MTMathAtom(type: .ordinary, value: "\u{2127}"),
|
||||
"aleph" : MTMathAtom(type: .ordinary, value: "\u{2135}"),
|
||||
"forall" : MTMathAtom(type: .ordinary, value: "\u{2200}"),
|
||||
"exists" : MTMathAtom(type: .ordinary, value: "\u{2203}"),
|
||||
"nexists" : MTMathAtom(type: .ordinary, value: "\u{2204}"),
|
||||
"emptyset" : MTMathAtom(type: .ordinary, value: "\u{2205}"),
|
||||
"nabla" : MTMathAtom(type: .ordinary, value: "\u{2207}"),
|
||||
"infty" : MTMathAtom(type: .ordinary, value: "\u{221E}"),
|
||||
"angle" : MTMathAtom(type: .ordinary, value: "\u{2220}"),
|
||||
"top" : MTMathAtom(type: .ordinary, value: "\u{22A4}"),
|
||||
"bot" : MTMathAtom(type: .ordinary, value: "\u{22A5}"),
|
||||
"vdots" : MTMathAtom(type: .ordinary, value: "\u{22EE}"),
|
||||
"cdots" : MTMathAtom(type: .ordinary, value: "\u{22EF}"),
|
||||
"ddots" : MTMathAtom(type: .ordinary, value: "\u{22F1}"),
|
||||
"triangle" : MTMathAtom(type: .ordinary, value: "\u{25B3}"),
|
||||
"imath" : MTMathAtom(type: .ordinary, value: "\u{0001D6A4}"),
|
||||
"jmath" : MTMathAtom(type: .ordinary, value: "\u{0001D6A5}"),
|
||||
"upquote" : MTMathAtom(type: .ordinary, value: "\u{0027}"),
|
||||
"partial" : MTMathAtom(type: .ordinary, value: "\u{0001D715}"),
|
||||
|
||||
// Spacing
|
||||
"," : MTMathSpace(space: 3),
|
||||
">" : MTMathSpace(space: 4),
|
||||
";" : MTMathSpace(space: 5),
|
||||
"!" : MTMathSpace(space: -3),
|
||||
"quad" : MTMathSpace(space: 18), // quad = 1em = 18mu
|
||||
"qquad" : MTMathSpace(space: 36), // qquad = 2em
|
||||
|
||||
// Style
|
||||
"displaystyle" : MTMathStyle(style: .display),
|
||||
"textstyle" : MTMathStyle(style: .text),
|
||||
"scriptstyle" : MTMathStyle(style: .script),
|
||||
"scriptscriptstyle" : MTMathStyle(style: .scriptOfScript),
|
||||
]
|
||||
|
||||
static var supportedAccentedCharacters: [Character: (String, String)] = [
|
||||
// Acute accents
|
||||
"á": ("acute", "a"), "é": ("acute", "e"), "í": ("acute", "i"),
|
||||
"ó": ("acute", "o"), "ú": ("acute", "u"), "ý": ("acute", "y"),
|
||||
|
||||
// Grave accents
|
||||
"à": ("grave", "a"), "è": ("grave", "e"), "ì": ("grave", "i"),
|
||||
"ò": ("grave", "o"), "ù": ("grave", "u"),
|
||||
|
||||
// Circumflex
|
||||
"â": ("hat", "a"), "ê": ("hat", "e"), "î": ("hat", "i"),
|
||||
"ô": ("hat", "o"), "û": ("hat", "u"),
|
||||
|
||||
// Umlaut/dieresis
|
||||
"ä": ("ddot", "a"), "ë": ("ddot", "e"), "ï": ("ddot", "i"),
|
||||
"ö": ("ddot", "o"), "ü": ("ddot", "u"), "ÿ": ("ddot", "y"),
|
||||
|
||||
// Tilde
|
||||
"ã": ("tilde", "a"), "ñ": ("tilde", "n"), "õ": ("tilde", "o"),
|
||||
|
||||
// Special characters
|
||||
"ç": ("cc", ""), "ø": ("o", ""), "å": ("aa", ""), "æ": ("ae", ""),
|
||||
"œ": ("oe", ""), "ß": ("ss", ""),
|
||||
"'": ("upquote", ""), // this may be dangerous in math mode
|
||||
|
||||
// Upper case variants
|
||||
"Á": ("acute", "A"), "É": ("acute", "E"), "Í": ("acute", "I"),
|
||||
"Ó": ("acute", "O"), "Ú": ("acute", "U"), "Ý": ("acute", "Y"),
|
||||
"À": ("grave", "A"), "È": ("grave", "E"), "Ì": ("grave", "I"),
|
||||
"Ò": ("grave", "O"), "Ù": ("grave", "U"),
|
||||
"Â": ("hat", "A"), "Ê": ("hat", "E"), "Î": ("hat", "I"),
|
||||
"Ô": ("hat", "O"), "Û": ("hat", "U"),
|
||||
"Ä": ("ddot", "A"), "Ë": ("ddot", "E"), "Ï": ("ddot", "I"),
|
||||
"Ö": ("ddot", "O"), "Ü": ("ddot", "U"),
|
||||
"Ã": ("tilde", "A"), "Ñ": ("tilde", "N"), "Õ": ("tilde", "O"),
|
||||
"Ç": ("CC", ""),
|
||||
"Ø": ("O", ""),
|
||||
"Å": ("AA", ""),
|
||||
"Æ": ("AE", ""),
|
||||
"Œ": ("OE", ""),
|
||||
]
|
||||
|
||||
private static let textToLatexLock = NSLock()
|
||||
static var _textToLatexSymbolName: [String: String]? = nil
|
||||
public static var textToLatexSymbolName: [String: String] {
|
||||
get {
|
||||
if self._textToLatexSymbolName == nil {
|
||||
var output = [String: String]()
|
||||
for (key, atom) in Self.supportedLatexSymbols {
|
||||
if atom.nucleus.count == 0 {
|
||||
continue
|
||||
}
|
||||
if let existingText = output[atom.nucleus] {
|
||||
// If there are 2 key for the same symbol, choose one deterministically.
|
||||
if key.count > existingText.count {
|
||||
// Keep the shorter command
|
||||
continue
|
||||
} else if key.count == existingText.count {
|
||||
// If the length is the same, keep the alphabetically first
|
||||
if key.compare(existingText) == .orderedDescending {
|
||||
continue
|
||||
}
|
||||
}
|
||||
}
|
||||
output[atom.nucleus] = key
|
||||
}
|
||||
// protect lazily loading table in a multi-thread concurrent environment
|
||||
textToLatexLock.lock()
|
||||
defer { textToLatexLock.unlock() }
|
||||
if self._textToLatexSymbolName == nil {
|
||||
self._textToLatexSymbolName = output
|
||||
}
|
||||
}
|
||||
return self._textToLatexSymbolName!
|
||||
}
|
||||
// make textToLatexSymbolName readonly (allows internal load)
|
||||
// entries can be lazily added with NSLock protection.
|
||||
// set {
|
||||
// self._textToLatexSymbolName = newValue
|
||||
// }
|
||||
}
|
||||
|
||||
// public static let sharedInstance = MTMathAtomFactory()
|
||||
|
||||
static let fontStyles : [String: MTFontStyle] = [
|
||||
"mathnormal" : .defaultStyle,
|
||||
"mathrm": .roman,
|
||||
"textrm": .roman,
|
||||
"rm": .roman,
|
||||
"mathbf": .bold,
|
||||
"bf": .bold,
|
||||
"textbf": .bold,
|
||||
"mathcal": .caligraphic,
|
||||
"cal": .caligraphic,
|
||||
"mathtt": .typewriter,
|
||||
"texttt": .typewriter,
|
||||
"mathit": .italic,
|
||||
"textit": .italic,
|
||||
"mit": .italic,
|
||||
"mathsf": .sansSerif,
|
||||
"textsf": .sansSerif,
|
||||
"mathfrak": .fraktur,
|
||||
"frak": .fraktur,
|
||||
"mathbb": .blackboard,
|
||||
"mathbfit": .boldItalic,
|
||||
"bm": .boldItalic,
|
||||
"text": .roman,
|
||||
]
|
||||
|
||||
public static func fontStyleWithName(_ fontName:String) -> MTFontStyle? {
|
||||
fontStyles[fontName]
|
||||
}
|
||||
|
||||
public static func fontNameForStyle(_ fontStyle:MTFontStyle) -> String {
|
||||
switch fontStyle {
|
||||
case .defaultStyle: return "mathnormal"
|
||||
case .roman: return "mathrm"
|
||||
case .bold: return "mathbf"
|
||||
case .fraktur: return "mathfrak"
|
||||
case .caligraphic: return "mathcal"
|
||||
case .italic: return "mathit"
|
||||
case .sansSerif: return "mathsf"
|
||||
case .blackboard: return "mathbb"
|
||||
case .typewriter: return "mathtt"
|
||||
case .boldItalic: return "bm"
|
||||
}
|
||||
}
|
||||
|
||||
/// Returns an atom for the multiplication sign (i.e., \times or "*")
|
||||
public static func times() -> MTMathAtom {
|
||||
MTMathAtom(type: .binaryOperator, value: UnicodeSymbol.multiplication)
|
||||
}
|
||||
|
||||
/// Returns an atom for the division sign (i.e., \div or "/")
|
||||
public static func divide() -> MTMathAtom {
|
||||
MTMathAtom(type: .binaryOperator, value: UnicodeSymbol.division)
|
||||
}
|
||||
|
||||
/// Returns an atom which is a placeholder square
|
||||
public static func placeholder() -> MTMathAtom {
|
||||
MTMathAtom(type: .placeholder, value: UnicodeSymbol.whiteSquare)
|
||||
}
|
||||
|
||||
/** Returns a fraction with a placeholder for the numerator and denominator */
|
||||
public static func placeholderFraction() -> MTFraction {
|
||||
let frac = MTFraction()
|
||||
frac.numerator = MTMathList()
|
||||
frac.numerator?.add(placeholder())
|
||||
frac.denominator = MTMathList()
|
||||
frac.denominator?.add(placeholder())
|
||||
return frac
|
||||
}
|
||||
|
||||
/** Returns a square root with a placeholder as the radicand. */
|
||||
public static func placeholderSquareRoot() -> MTRadical {
|
||||
let rad = MTRadical()
|
||||
rad.radicand = MTMathList()
|
||||
rad.radicand?.add(placeholder())
|
||||
return rad
|
||||
}
|
||||
|
||||
/** Returns a radical with a placeholder as the radicand. */
|
||||
public static func placeholderRadical() -> MTRadical {
|
||||
let rad = MTRadical()
|
||||
rad.radicand = MTMathList()
|
||||
rad.degree = MTMathList()
|
||||
rad.radicand?.add(placeholder())
|
||||
rad.degree?.add(placeholder())
|
||||
return rad
|
||||
}
|
||||
|
||||
public static func atom(fromAccentedCharacter ch: Character) -> MTMathAtom? {
|
||||
if let symbol = supportedAccentedCharacters[ch] {
|
||||
// first handle any special characters
|
||||
if let atom = atom(forLatexSymbol: symbol.0) {
|
||||
return atom
|
||||
}
|
||||
|
||||
if let accent = MTMathAtomFactory.accent(withName: symbol.0) {
|
||||
// The command is an accent
|
||||
let list = MTMathList()
|
||||
let ch = Array(symbol.1)[0]
|
||||
list.add(atom(forCharacter: ch))
|
||||
accent.innerList = list
|
||||
return accent
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// MARK: -
|
||||
/** Gets the atom with the right type for the given character. If an atom
|
||||
cannot be determined for a given character this returns nil.
|
||||
This function follows latex conventions for assigning types to the atoms.
|
||||
The following characters are not supported and will return nil:
|
||||
- Any non-ascii character.
|
||||
- Any control character or spaces (< 0x21)
|
||||
- Latex control chars: $ % # & ~ '
|
||||
- Chars with special meaning in latex: ^ _ { } \
|
||||
All other characters, including those with accents, will have a non-nil atom returned.
|
||||
*/
|
||||
public static func atom(forCharacter ch: Character) -> MTMathAtom? {
|
||||
let chStr = String(ch)
|
||||
switch chStr {
|
||||
case "\u{0410}"..."\u{044F}":
|
||||
// Cyrillic alphabet
|
||||
return MTMathAtom(type: .ordinary, value: chStr)
|
||||
case _ where supportedAccentedCharacters.keys.contains(ch):
|
||||
// support for áéíóúýàèìòùâêîôûäëïöüÿãñõçøåæœß'ÁÉÍÓÚÝÀÈÌÒÙÂÊÎÔÛÄËÏÖÜÃÑÕÇØÅÆŒ
|
||||
return atom(fromAccentedCharacter: ch)
|
||||
case _ where ch.utf32Char < 0x0021 || ch.utf32Char > 0x007E:
|
||||
return nil
|
||||
case "$", "%", "#", "&", "~", "\'", "^", "_", "{", "}", "\\":
|
||||
return nil
|
||||
case "(", "[":
|
||||
return MTMathAtom(type: .open, value: chStr)
|
||||
case ")", "]", "!", "?":
|
||||
return MTMathAtom(type: .close, value: chStr)
|
||||
case ",", ";":
|
||||
return MTMathAtom(type: .punctuation, value: chStr)
|
||||
case "=", ">", "<":
|
||||
return MTMathAtom(type: .relation, value: chStr)
|
||||
case ":":
|
||||
// Math colon is ratio. Regular colon is \colon
|
||||
return MTMathAtom(type: .relation, value: "\u{2236}")
|
||||
case "-":
|
||||
return MTMathAtom(type: .binaryOperator, value: "\u{2212}")
|
||||
case "+", "*":
|
||||
return MTMathAtom(type: .binaryOperator, value: chStr)
|
||||
case ".", "0"..."9":
|
||||
return MTMathAtom(type: .number, value: chStr)
|
||||
case "a"..."z", "A"..."Z":
|
||||
return MTMathAtom(type: .variable, value: chStr)
|
||||
case "\"", "/", "@", "`", "|":
|
||||
return MTMathAtom(type: .ordinary, value: chStr)
|
||||
default:
|
||||
assertionFailure("Unknown ASCII character '\(ch)'. Should have been handled earlier.")
|
||||
return nil
|
||||
}
|
||||
}
|
||||
|
||||
/** Returns a `MTMathList` with one atom per character in the given string. This function
|
||||
does not do any LaTeX conversion or interpretation. It simply uses `atom(forCharacter:)` to
|
||||
convert the characters to atoms. Any character that cannot be converted is ignored. */
|
||||
public static func atomList(for string: String) -> MTMathList {
|
||||
let list = MTMathList()
|
||||
for character in string {
|
||||
if let newAtom = atom(forCharacter: character) {
|
||||
list.add(newAtom)
|
||||
}
|
||||
}
|
||||
return list
|
||||
}
|
||||
|
||||
/** Returns an atom with the right type for a given latex symbol (e.g. theta)
|
||||
If the latex symbol is unknown this will return nil. This supports LaTeX aliases as well.
|
||||
*/
|
||||
public static func atom(forLatexSymbol name: String) -> MTMathAtom? {
|
||||
var name = name
|
||||
if let canonicalName = aliases[name] {
|
||||
name = canonicalName
|
||||
}
|
||||
if let atom = supportedLatexSymbols[name] {
|
||||
return atom.copy()
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
/** Finds the name of the LaTeX symbol name for the given atom. This function is a reverse
|
||||
of the above function. If no latex symbol name corresponds to the atom, then this returns `nil`
|
||||
If nucleus of the atom is empty, then this will return `nil`.
|
||||
Note: This is not an exact reverse of the above in the case of aliases. If an LaTeX alias
|
||||
points to a given symbol, then this function will return the original symbol name and not the
|
||||
alias.
|
||||
Note: This function does not convert MathSpaces to latex command names either.
|
||||
*/
|
||||
public static func latexSymbolName(for atom: MTMathAtom) -> String? {
|
||||
guard !atom.nucleus.isEmpty else { return nil }
|
||||
return Self.textToLatexSymbolName[atom.nucleus]
|
||||
}
|
||||
|
||||
/** Define a latex symbol for rendering. This function allows defining custom symbols that are
|
||||
not already present in the default set, or override existing symbols with new meaning.
|
||||
e.g. to define a symbol for "lcm" one can call:
|
||||
`MTMathAtomFactory.add(latexSymbol:"lcm", value:MTMathAtomFactory.operatorWithName("lcm", limits: false))` */
|
||||
public static func add(latexSymbol name: String, value: MTMathAtom) {
|
||||
let _ = Self.textToLatexSymbolName
|
||||
// above force textToLatexSymbolName to initialise first, _textToLatexSymbolName also initialized.
|
||||
// protect lazily loading table in a multi-thread concurrent environment
|
||||
textToLatexLock.lock()
|
||||
defer { textToLatexLock.unlock() }
|
||||
supportedLatexSymbols[name] = value
|
||||
Self._textToLatexSymbolName?[value.nucleus] = name
|
||||
}
|
||||
|
||||
/** Returns a large opertor for the given name. If limits is true, limits are set up on
|
||||
the operator and displayed differently. */
|
||||
public static func operatorWithName(_ name: String, limits: Bool) -> MTLargeOperator {
|
||||
MTLargeOperator(value: name, limits: limits)
|
||||
}
|
||||
|
||||
/** Returns an accent with the given name. The name of the accent is the LaTeX name
|
||||
such as `grave`, `hat` etc. If the name is not a recognized accent name, this
|
||||
returns nil. The `innerList` of the returned `MTAccent` is nil.
|
||||
*/
|
||||
public static func accent(withName name: String) -> MTAccent? {
|
||||
if let accentValue = accents[name] {
|
||||
return MTAccent(value: accentValue)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
/** Returns the accent name for the given accent. This is the reverse of the above
|
||||
function. */
|
||||
public static func accentName(_ accent: MTAccent) -> String? {
|
||||
accentValueToName[accent.nucleus]
|
||||
}
|
||||
|
||||
/** Creates a new boundary atom for the given delimiter name. If the delimiter name
|
||||
is not recognized it returns nil. A delimiter name can be a single character such
|
||||
as '(' or a latex command such as 'uparrow'.
|
||||
@note In order to distinguish between the delimiter '|' and the delimiter '\|' the delimiter '\|'
|
||||
the has been renamed to '||'.
|
||||
*/
|
||||
public static func boundary(forDelimiter name: String) -> MTMathAtom? {
|
||||
if let delimValue = Self.delimiters[name] {
|
||||
return MTMathAtom(type: .boundary, value: delimValue)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
/** Returns the delimiter name for a boundary atom. This is a reverse of the above function.
|
||||
If the atom is not a boundary atom or if the delimiter value is unknown this returns `nil`.
|
||||
@note This is not an exact reverse of the above function. Some delimiters have two names (e.g.
|
||||
`<` and `langle`) and this function always returns the shorter name.
|
||||
*/
|
||||
public static func getDelimiterName(of boundary: MTMathAtom) -> String? {
|
||||
guard boundary.type == .boundary else { return nil }
|
||||
return Self.delimValueToName[boundary.nucleus]
|
||||
}
|
||||
|
||||
/** Returns a fraction with the given numerator and denominator. */
|
||||
public static func fraction(withNumerator num: MTMathList, denominator denom: MTMathList) -> MTFraction {
|
||||
let frac = MTFraction()
|
||||
frac.numerator = num
|
||||
frac.denominator = denom
|
||||
return frac
|
||||
}
|
||||
|
||||
public static func mathListForCharacters(_ chars:String) -> MTMathList? {
|
||||
let list = MTMathList()
|
||||
for ch in chars {
|
||||
if let atom = self.atom(forCharacter: ch) {
|
||||
list.add(atom)
|
||||
}
|
||||
}
|
||||
return list
|
||||
}
|
||||
|
||||
/** Simplification of above function when numerator and denominator are simple strings.
|
||||
This function converts the strings to a `MTFraction`. */
|
||||
public static func fraction(withNumeratorString numStr: String, denominatorString denomStr: String) -> MTFraction {
|
||||
let num = Self.atomList(for: numStr)
|
||||
let denom = Self.atomList(for: denomStr)
|
||||
return Self.fraction(withNumerator: num, denominator: denom)
|
||||
}
|
||||
|
||||
|
||||
static let matrixEnvs = [
|
||||
"matrix": [],
|
||||
"pmatrix": ["(", ")"],
|
||||
"bmatrix": ["[", "]"],
|
||||
"Bmatrix": ["{", "}"],
|
||||
"vmatrix": ["vert", "vert"],
|
||||
"Vmatrix": ["Vert", "Vert"],
|
||||
"smallmatrix": [],
|
||||
// Starred versions with optional alignment
|
||||
"matrix*": [],
|
||||
"pmatrix*": ["(", ")"],
|
||||
"bmatrix*": ["[", "]"],
|
||||
"Bmatrix*": ["{", "}"],
|
||||
"vmatrix*": ["vert", "vert"],
|
||||
"Vmatrix*": ["Vert", "Vert"]
|
||||
]
|
||||
|
||||
/** Builds a table for a given environment with the given rows. Returns a `MTMathAtom` containing the
|
||||
table and any other atoms necessary for the given environment. Returns nil and sets error
|
||||
if the table could not be built.
|
||||
@param env The environment to use to build the table. If the env is nil, then the default table is built.
|
||||
@note The reason this function returns a `MTMathAtom` and not a `MTMathTable` is because some
|
||||
matrix environments are have builtin delimiters added to the table and hence are returned as inner atoms.
|
||||
*/
|
||||
public static func table(withEnvironment env: String?, alignment: MTColumnAlignment? = nil, rows: [[MTMathList]], error:inout NSError?) -> MTMathAtom? {
|
||||
let table = MTMathTable(environment: env)
|
||||
|
||||
for i in 0..<rows.count {
|
||||
let row = rows[i]
|
||||
for j in 0..<row.count {
|
||||
table.set(cell: row[j], forRow: i, column: j)
|
||||
}
|
||||
}
|
||||
|
||||
if env == nil {
|
||||
table.interColumnSpacing = 0
|
||||
table.interRowAdditionalSpacing = 1
|
||||
for i in 0..<table.numColumns {
|
||||
table.set(alignment: .left, forColumn: i)
|
||||
}
|
||||
return table
|
||||
} else if let env = env {
|
||||
if let delims = matrixEnvs[env] {
|
||||
table.environment = "matrix"
|
||||
|
||||
// smallmatrix uses script style and tighter spacing for inline use
|
||||
let isSmallMatrix = (env == "smallmatrix")
|
||||
|
||||
table.interRowAdditionalSpacing = 0
|
||||
table.interColumnSpacing = isSmallMatrix ? 6 : 18
|
||||
|
||||
let style = MTMathStyle(style: isSmallMatrix ? .script : .text)
|
||||
|
||||
for i in 0..<table.cells.count {
|
||||
for j in 0..<table.cells[i].count {
|
||||
table.cells[i][j].insert(style, at: 0)
|
||||
}
|
||||
}
|
||||
|
||||
// Apply alignment for starred matrix environments
|
||||
if let align = alignment {
|
||||
for col in 0..<table.numColumns {
|
||||
table.set(alignment: align, forColumn: col)
|
||||
}
|
||||
}
|
||||
|
||||
if delims.count == 2 {
|
||||
let inner = MTInner()
|
||||
inner.leftBoundary = Self.boundary(forDelimiter: delims[0])
|
||||
inner.rightBoundary = Self.boundary(forDelimiter: delims[1])
|
||||
inner.innerList = MTMathList(atoms: [table])
|
||||
return inner
|
||||
} else {
|
||||
return table
|
||||
}
|
||||
} else if env == "eqalign" || env == "split" || env == "aligned" {
|
||||
if table.numColumns != 2 {
|
||||
let message = "\(env) environment can only have 2 columns"
|
||||
if error == nil {
|
||||
error = NSError(domain: MTParseError, code: MTParseErrors.invalidNumColumns.rawValue, userInfo: [NSLocalizedDescriptionKey:message])
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
let spacer = MTMathAtom(type: .ordinary, value: "")
|
||||
|
||||
for i in 0..<table.cells.count {
|
||||
if table.cells[i].count >= 2 {
|
||||
table.cells[i][1].insert(spacer, at: 0)
|
||||
}
|
||||
}
|
||||
|
||||
table.interRowAdditionalSpacing = 1
|
||||
table.interColumnSpacing = 0
|
||||
|
||||
table.set(alignment: .right, forColumn: 0)
|
||||
table.set(alignment: .left, forColumn: 1)
|
||||
|
||||
return table
|
||||
} else if env == "displaylines" || env == "gather" {
|
||||
if table.numColumns != 1 {
|
||||
let message = "\(env) environment can only have 1 column"
|
||||
if error == nil {
|
||||
error = NSError(domain: MTParseError, code: MTParseErrors.invalidNumColumns.rawValue, userInfo: [NSLocalizedDescriptionKey:message])
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
table.interRowAdditionalSpacing = 1
|
||||
table.interColumnSpacing = 0
|
||||
|
||||
table.set(alignment: .center, forColumn: 0)
|
||||
|
||||
return table
|
||||
} else if env == "eqnarray" {
|
||||
if table.numColumns != 3 {
|
||||
let message = "\(env) environment can only have 3 columns"
|
||||
if error == nil {
|
||||
error = NSError(domain: MTParseError, code: MTParseErrors.invalidNumColumns.rawValue, userInfo: [NSLocalizedDescriptionKey:message])
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
table.interRowAdditionalSpacing = 1
|
||||
table.interColumnSpacing = 18
|
||||
|
||||
table.set(alignment: .right, forColumn: 0)
|
||||
table.set(alignment: .center, forColumn: 1)
|
||||
table.set(alignment: .left, forColumn: 2)
|
||||
|
||||
return table
|
||||
} else if env == "cases" {
|
||||
if table.numColumns != 1 && table.numColumns != 2 {
|
||||
let message = "cases environment can have 1 or 2 columns"
|
||||
if error == nil {
|
||||
error = NSError(domain: MTParseError, code: MTParseErrors.invalidNumColumns.rawValue, userInfo: [NSLocalizedDescriptionKey:message])
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
table.interRowAdditionalSpacing = 0
|
||||
table.interColumnSpacing = 18
|
||||
|
||||
table.set(alignment: .left, forColumn: 0)
|
||||
if table.numColumns == 2 {
|
||||
table.set(alignment: .left, forColumn: 1)
|
||||
}
|
||||
|
||||
let style = MTMathStyle(style: .text)
|
||||
for i in 0..<table.cells.count {
|
||||
for j in 0..<table.cells[i].count {
|
||||
table.cells[i][j].insert(style, at: 0)
|
||||
}
|
||||
}
|
||||
|
||||
let inner = MTInner()
|
||||
inner.leftBoundary = Self.boundary(forDelimiter: "{")
|
||||
inner.rightBoundary = Self.boundary(forDelimiter: ".")
|
||||
let space = Self.atom(forLatexSymbol: ",")!
|
||||
|
||||
inner.innerList = MTMathList(atoms: [space, table])
|
||||
|
||||
return inner
|
||||
} else {
|
||||
let message = "Unknown environment \(env)"
|
||||
error = NSError(domain: MTParseError, code: MTParseErrors.invalidEnv.rawValue, userInfo: [NSLocalizedDescriptionKey:message])
|
||||
return nil
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user