parser.py 文件源码

def convertUnitTo(self, expr, newUnit):
        if expr.astUnit.isNull():
            raise XXXSyntaxError("Can't convert a null unit!")
        elif not expr.astUnit.rawUnit.isCompatibleWith(newUnit):
            raise XXXSyntaxError("Incompatible unit conversion requested.")
        else:
            factor = expr.astUnit.rawUnit.convertTo(newUnit)
            return AST(sympy.Mul(factor,expr.sympy), ASTUnit(newUnit, explicit=False))

    #def astToVar(self, var, ast):
    #    self.currentSubsystem().ssa[var] = ast
    #    self.currentScope().addInstruction(var)
    #    return (var, ast.astUnit)

    #def astToTemp(self, ast):
    #    return self.astToVar(self.newTempVar(),ast)
    #def astToSymbol(self, name, ast):
    #    (var, astUnit) = self.astToVar(Symbol(name),ast)
    #    self.currentScope().setSymbol(name, var)
    #    return (var, astUnit)