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							91 lines
						
					
					
						
							2.6 KiB
						
					
					
				
			
		
		
	
	
							91 lines
						
					
					
						
							2.6 KiB
						
					
					
				import Long from "@xtuc/long"; | 
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import parseHexFloat from "@webassemblyjs/floating-point-hex-parser"; | 
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import { CompileError } from "@webassemblyjs/helper-api-error"; | 
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export function parse32F(sourceString) { | 
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  if (isHexLiteral(sourceString)) { | 
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    return parseHexFloat(sourceString); | 
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  } | 
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 | 
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  if (isInfLiteral(sourceString)) { | 
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    return sourceString[0] === "-" ? -1 : 1; | 
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  } | 
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 | 
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  if (isNanLiteral(sourceString)) { | 
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    return (sourceString[0] === "-" ? -1 : 1) * (sourceString.includes(":") ? parseInt(sourceString.substring(sourceString.indexOf(":") + 1), 16) : 0x400000); | 
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  } | 
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 | 
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  return parseFloat(sourceString); | 
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} | 
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export function parse64F(sourceString) { | 
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  if (isHexLiteral(sourceString)) { | 
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    return parseHexFloat(sourceString); | 
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  } | 
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 | 
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  if (isInfLiteral(sourceString)) { | 
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    return sourceString[0] === "-" ? -1 : 1; | 
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  } | 
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 | 
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  if (isNanLiteral(sourceString)) { | 
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    return (sourceString[0] === "-" ? -1 : 1) * (sourceString.includes(":") ? parseInt(sourceString.substring(sourceString.indexOf(":") + 1), 16) : 0x8000000000000); | 
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  } | 
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 | 
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  if (isHexLiteral(sourceString)) { | 
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    return parseHexFloat(sourceString); | 
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  } | 
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 | 
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  return parseFloat(sourceString); | 
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} | 
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export function parse32I(sourceString) { | 
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  var value = 0; | 
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 | 
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  if (isHexLiteral(sourceString)) { | 
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    value = ~~parseInt(sourceString, 16); | 
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  } else if (isDecimalExponentLiteral(sourceString)) { | 
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    throw new Error("This number literal format is yet to be implemented."); | 
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  } else { | 
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    value = parseInt(sourceString, 10); | 
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  } | 
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 | 
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  return value; | 
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} | 
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export function parseU32(sourceString) { | 
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  var value = parse32I(sourceString); | 
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 | 
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  if (value < 0) { | 
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    throw new CompileError("Illegal value for u32: " + sourceString); | 
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  } | 
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 | 
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  return value; | 
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} | 
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export function parse64I(sourceString) { | 
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  var long; | 
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 | 
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  if (isHexLiteral(sourceString)) { | 
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    long = Long.fromString(sourceString, false, 16); | 
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  } else if (isDecimalExponentLiteral(sourceString)) { | 
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    throw new Error("This number literal format is yet to be implemented."); | 
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  } else { | 
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    long = Long.fromString(sourceString); | 
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  } | 
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 | 
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  return { | 
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    high: long.high, | 
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    low: long.low | 
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  }; | 
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} | 
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var NAN_WORD = /^\+?-?nan/; | 
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var INF_WORD = /^\+?-?inf/; | 
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export function isInfLiteral(sourceString) { | 
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  return INF_WORD.test(sourceString.toLowerCase()); | 
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} | 
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export function isNanLiteral(sourceString) { | 
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  return NAN_WORD.test(sourceString.toLowerCase()); | 
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} | 
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 | 
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function isDecimalExponentLiteral(sourceString) { | 
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  return !isHexLiteral(sourceString) && sourceString.toUpperCase().includes("E"); | 
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} | 
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 | 
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function isHexLiteral(sourceString) { | 
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  return sourceString.substring(0, 2).toUpperCase() === "0X" || sourceString.substring(0, 3).toUpperCase() === "-0X"; | 
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} |