怎么样使用正则表达式解析四则运算式？

测试如:

iif(rui(5.27778 * (2+0.7) / 1.257 + sqrt(9+6) + pow(2,4)) > rui(pow(sqrt(6+(7)),sqrt((5+3)))), sqrt(power(2+2,2)),sqrt(25))

注:rui无条件进1;

解析步骤:

---

Group Count: 16

Func: * (2+0.7)

Opts: *

Par1: 2+0.7

---

iif(rui(5.27778 *2.7 / 1.257 + sqrt(9+6) + pow(2,4)) > rui(pow(sqrt(6+(7)),sqrt((5+3)))), sqrt(power(2+2,2)),sqrt(25))

Group Count: 16

Func: +(7)

Opts: +

Par1: 7

---

iif(rui(5.27778 *2.7 / 1.257 + sqrt(9+6) + pow(2,4)) > rui(pow(sqrt(6+7),sqrt((5+3)))), sqrt(power(2+2,2)),sqrt(25))

5+3

5

+

3

8

---

Group Count: 16

Func: ((5+3)

Opts: (

Par1: 5+3

---

iif(rui(5.27778 *2.7 / 1.257 + sqrt(9+6) + pow(2,4)) > rui(pow(sqrt(6+7),sqrt(8))), sqrt(power(2+2,2)),sqrt(25))

9+6

9

+

6

15

---

---

FuncName: SQRT

Group Count: 11

Func: sqrt(9+6)

Par1: 9+6

Par2:

Par3:

(:

):

---

iif(rui(5.27778 *2.7 / 1.257 + 3.87298334620742 + pow(2,4)) > rui(pow(sqrt(6+7),sqrt(8))), sqrt(power(2+2,2)),sqrt(25))

6+7

6

+

7

13

---

---

FuncName: SQRT

Group Count: 11

Func: sqrt(6+7)

Par1: 6+7

Par2:

Par3:

(:

):

---

iif(rui(5.27778 *2.7 / 1.257 + 3.87298334620742 + pow(2,4)) > rui(pow(3.60555127546399,sqrt(8))), sqrt(power(2+2,2)),sqrt(25))

---

FuncName: SQRT

Group Count: 11

Func: sqrt(8)

Par1: 8

Par2:

Par3:

(:

):

---

iif(rui(5.27778 *2.7 / 1.257 + 3.87298334620742 + pow(2,4)) > rui(pow(3.60555127546399,2.82842712474619)), sqrt(power(2+2,2)),sqrt(25))

---

FuncName: SQRT

Group Count: 11

Func: sqrt(25)

Par1: 25

Par2:

Par3:

(:

):

---

iif(rui(5.27778 *2.7 / 1.257 + 3.87298334620742 + pow(2,4)) > rui(pow(3.60555127546399,2.82842712474619)), sqrt(power(2+2,2)),5)

---

FuncName: POW

Group Count: 21

Func: pow(2,4)

Par1: 2

Par2: 4

Par3:

(:

):

---

iif(rui(5.27778 *2.7 / 1.257 + 3.87298334620742 + 16) > rui(pow(3.60555127546399,2.82842712474619)), sqrt(power(2+2,2)),5)

---

FuncName: POW

Group Count: 21

Func: pow(3.60555127546399,2.82842712474619)

Par1: 3.60555127546399

Par2: 2.82842712474619

Par3:

(:

):

---

iif(rui(5.27778 *2.7 / 1.257 + 3.87298334620742 + 16) > rui(37.6143703719252), sqrt(power(2+2,2)),5)

2+2

2

+

2

4

---

---

FuncName: POW

Group Count: 21

Func: power(2+2,2)

Par1: 2+2

Par2: 2

Par3:

(:

):

---

iif(rui(5.27778 *2.7 / 1.257 + 3.87298334620742 + 16) > rui(37.6143703719252), sqrt(16),5)

---

FuncName: SQRT

Group Count: 11

Func: sqrt(16)

Par1: 16

Par2:

Par3:

(:

):

---

iif(rui(5.27778 *2.7 / 1.257 + 3.87298334620742 + 16) > rui(37.6143703719252), 4,5)

2.7 / 1.257

2.7

/

1.257

5.27778 *2.14797136038186 + 3.87298334620742 + 16

---

5.27778 *2.14797136038186

5.27778

*

2.14797136038186

11.3365202863962 + 3.87298334620742 + 16

---

11.3365202863962 + 3.87298334620742

11.3365202863962

+

3.87298334620742

15.2095036326036 + 16

---

15.2095036326036 + 16

15.2095036326036

+

16

31.2095036326036

---

---

FuncName: RUI

Group Count: 11

Func: rui(5.27778 *2.7 / 1.257 + 3.87298334620742 + 16)

Par1: 5.27778 *2.7 / 1.257 + 3.87298334620742 + 16

Par2:

Par3:

(:

):

---

iif(32 > rui(37.6143703719252), 4,5)

---

FuncName: RUI

Group Count: 11

Func: rui(37.6143703719252)

Par1: 37.6143703719252

Par2:

Par3:

(:

):

---

iif(32 > 38, 4,5)

32 > 38

32

>

38

0

---

---

FuncName: IIF

Group Count: 29

Func: iif(32 > 38, 4,5)

Par1: 32 > 38

Par2: 4

Par3: 5

(:

):

---

5

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