Expression parser in Java using Libero

Libero Libero 2.12

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calcul.l Dialog for expression calculation functions

Written: 96/06/23 Antonnaux pascal

Revised: 96/07/06

After-Init:

(--) Ok --------------------------------> Expecting-Operand

+ Get-Next-Token

(--) Error ----------------------------->

+ Terminate-The-Program

Expecting-Operand:

(--) String ------------------------------> Expecting-Operator

+ Stack-The-String

+ Get-Next-Token

(--) Number ----------------------------> Expecting-Operator

+ Stack-The-Number

+ Get-Next-Token

(--) Left-Par ----------------------------> Expecting-Operand

+ Stack-The-Operator

+ Get-Next-Token

Expecting-Operator:

(--) Operator --------------------------> Expecting-Operand

+ Unstack-Ge-Operators

+ Stack-The-Operator

+ Get-Next-Token

(--) End-Mark ------------------------->

+ Unstack-All-Operators

+ Unstack-If-End-Mark

+ Terminate-The-Program

(--) Right-Par--------------------------> Expecting-Operator

+ Unstack-All-Operators

+ Unstack-If-Left-Par

+ Get-Next-Token

Defaults:

(--) String ------------------------------->

+ Signal-Invalid-Token

+ Terminate-The-Program

(--) Number ---------------------------->

+ Signal-Invalid-Token

+ Terminate-The-Program

(--) Operator -------------------------->

+ Signal-Invalid-Token

+ Terminate-The-Program

(--) End-Mark ------------------------->

+ Signal-Token-Missing

+ Terminate-The-Program

(--) Exception ------------------------>

+ Terminate-The-Program

(--) Other ------------------------------->

+ Signal-Invalid-Token

+ Terminate-The-Program

(--) Left-Par --------------------------->

+ Signal-Invalid-Token

+ Terminate-The-Program

(--) Right-Par ------------------------->

+ Signal-Invalid-Token

+ Terminate-The-Program