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Commitf075110

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committed
Web: Descriptive transformations without steps
1 parent2ea42ed commitf075110

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2 files changed

+58
-48
lines changed

2 files changed

+58
-48
lines changed

‎app/src/pages/CFGCNF.tsx‎

Lines changed: 44 additions & 36 deletions
Original file line numberDiff line numberDiff line change
@@ -130,15 +130,17 @@ export class CFGCNF extends Component<{}, State> {
130130
<>
131131
<h4>Bin</h4>
132132
{
133-
this.state.steps.bin.map(([cfg,desc],i)=>
134-
<divkey={i}>
135-
<p>{desc}</p>
136-
<CFGTable
137-
cfg={cfg}
138-
readonly={true}
139-
/>
140-
</div>
141-
)
133+
this.state.steps.bin.length===0 ?
134+
<p>No transformation needed.</p> :
135+
this.state.steps.bin.map(([cfg,desc],i)=>
136+
<divkey={i}>
137+
<p>{desc}</p>
138+
<CFGTable
139+
cfg={cfg}
140+
readonly={true}
141+
/>
142+
</div>
143+
)
142144
}
143145
<br/>
144146
<hr/>
@@ -149,15 +151,17 @@ export class CFGCNF extends Component<{}, State> {
149151
<>
150152
<h4>Del</h4>
151153
{
152-
this.state.steps.del.map(([cfg,desc],i)=>
153-
<divkey={i}>
154-
<p>{desc}</p>
155-
<CFGTable
156-
cfg={cfg}
157-
readonly={true}
158-
/>
159-
</div>
160-
)
154+
this.state.steps.del.length===0 ?
155+
<p>No transformation needed.</p> :
156+
this.state.steps.del.map(([cfg,desc],i)=>
157+
<divkey={i}>
158+
<p>{desc}</p>
159+
<CFGTable
160+
cfg={cfg}
161+
readonly={true}
162+
/>
163+
</div>
164+
)
161165
}
162166
<br/>
163167
<hr/>
@@ -168,15 +172,17 @@ export class CFGCNF extends Component<{}, State> {
168172
<>
169173
<h4>Unit</h4>
170174
{
171-
this.state.steps.unit.map(([cfg,desc],i)=>
172-
<divkey={i}>
173-
<p>{desc}</p>
174-
<CFGTable
175-
cfg={cfg}
176-
readonly={true}
177-
/>
178-
</div>
179-
)
175+
this.state.steps.unit.length===0 ?
176+
<p>No transformation needed.</p> :
177+
this.state.steps.unit.map(([cfg,desc],i)=>
178+
<divkey={i}>
179+
<p>{desc}</p>
180+
<CFGTable
181+
cfg={cfg}
182+
readonly={true}
183+
/>
184+
</div>
185+
)
180186
}
181187
<br/>
182188
<hr/>
@@ -187,15 +193,17 @@ export class CFGCNF extends Component<{}, State> {
187193
<>
188194
<h4>Term</h4>
189195
{
190-
this.state.steps.term.map(([cfg,desc],i)=>
191-
<divkey={i}>
192-
<p>{desc}</p>
193-
<CFGTable
194-
cfg={cfg}
195-
readonly={true}
196-
/>
197-
</div>
198-
)
196+
this.state.steps.term.length===0 ?
197+
<p>No transformation needed.</p> :
198+
this.state.steps.term.map(([cfg,desc],i)=>
199+
<divkey={i}>
200+
<p>{desc}</p>
201+
<CFGTable
202+
cfg={cfg}
203+
readonly={true}
204+
/>
205+
</div>
206+
)
199207
}
200208
<br/>
201209
<hr/>

‎app/src/pages/CFGTransformation.tsx‎

Lines changed: 14 additions & 12 deletions
Original file line numberDiff line numberDiff line change
@@ -4,7 +4,7 @@ import { CFGTable } from "../components/CFGTable";
44

55
interfaceState{
66
cfg:CFG.ContextFreeGrammar;
7-
steps:Array<[CFG.ContextFreeGrammar,string]>;
7+
steps:Array<[CFG.ContextFreeGrammar,string]>|null;
88
}
99

1010
exportabstractclassCFGTransformationextendsComponent<{},State>{
@@ -17,7 +17,7 @@ export abstract class CFGTransformation extends Component<{}, State> {
1717

1818
this.state={
1919
cfg:newCFG.ContextFreeGrammar(),
20-
steps:newArray<[CFG.ContextFreeGrammar,string]>(),
20+
steps:null,
2121
};
2222

2323
this.transform=this.transform.bind(this);
@@ -49,19 +49,21 @@ export abstract class CFGTransformation extends Component<{}, State> {
4949
</button>
5050
</section>
5151
{
52-
this.state.steps.length===0 ?null :
52+
this.state.steps==null ?null :
5353
<section>
5454
<h3>Transformation Steps</h3>
5555
{
56-
this.state.steps.map(([cfg,desc],i)=>
57-
<divkey={i}>
58-
<p>{desc}</p>
59-
<CFGTable
60-
cfg={cfg}
61-
readonly={true}
62-
/>
63-
</div>
64-
)
56+
this.state.steps.length===0 ?
57+
<p>No transformation needed.</p> :
58+
this.state.steps.map(([cfg,desc],i)=>
59+
<divkey={i}>
60+
<p>{desc}</p>
61+
<CFGTable
62+
cfg={cfg}
63+
readonly={true}
64+
/>
65+
</div>
66+
)
6567
}
6668
</section>
6769
}

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