diff options
| author | Frederick Yin <fkfd@fkfd.me> | 2022-08-16 11:54:23 +0800 |
|---|---|---|
| committer | Frederick Yin <fkfd@fkfd.me> | 2022-08-16 11:54:23 +0800 |
| commit | 9542deeb483a00b6fabed7574720926ce97d7511 (patch) | |
| tree | 0f2c1f72c03dd4693fd59df67544d2a4dddc5494 /projects/10/ExpressionLessSquare/Square.xml | |
| parent | 9c0cb1d1c32724fc95ac9548e4f8d873d3adaccc (diff) | |
Projects, 01-06 completed
Diffstat (limited to 'projects/10/ExpressionLessSquare/Square.xml')
| -rw-r--r-- | projects/10/ExpressionLessSquare/Square.xml | 967 |
1 files changed, 967 insertions, 0 deletions
diff --git a/projects/10/ExpressionLessSquare/Square.xml b/projects/10/ExpressionLessSquare/Square.xml new file mode 100644 index 0000000..ed0e6ec --- /dev/null +++ b/projects/10/ExpressionLessSquare/Square.xml @@ -0,0 +1,967 @@ +<class>
+ <keyword> class </keyword>
+ <identifier> Square </identifier>
+ <symbol> { </symbol>
+ <classVarDec>
+ <keyword> field </keyword>
+ <keyword> int </keyword>
+ <identifier> x </identifier>
+ <symbol> , </symbol>
+ <identifier> y </identifier>
+ <symbol> ; </symbol>
+ </classVarDec>
+ <classVarDec>
+ <keyword> field </keyword>
+ <keyword> int </keyword>
+ <identifier> size </identifier>
+ <symbol> ; </symbol>
+ </classVarDec>
+ <subroutineDec>
+ <keyword> constructor </keyword>
+ <identifier> Square </identifier>
+ <identifier> new </identifier>
+ <symbol> ( </symbol>
+ <parameterList>
+ <keyword> int </keyword>
+ <identifier> Ax </identifier>
+ <symbol> , </symbol>
+ <keyword> int </keyword>
+ <identifier> Ay </identifier>
+ <symbol> , </symbol>
+ <keyword> int </keyword>
+ <identifier> Asize </identifier>
+ </parameterList>
+ <symbol> ) </symbol>
+ <subroutineBody>
+ <symbol> { </symbol>
+ <statements>
+ <letStatement>
+ <keyword> let </keyword>
+ <identifier> x </identifier>
+ <symbol> = </symbol>
+ <expression>
+ <term>
+ <identifier> Ax </identifier>
+ </term>
+ </expression>
+ <symbol> ; </symbol>
+ </letStatement>
+ <letStatement>
+ <keyword> let </keyword>
+ <identifier> y </identifier>
+ <symbol> = </symbol>
+ <expression>
+ <term>
+ <identifier> Ay </identifier>
+ </term>
+ </expression>
+ <symbol> ; </symbol>
+ </letStatement>
+ <letStatement>
+ <keyword> let </keyword>
+ <identifier> size </identifier>
+ <symbol> = </symbol>
+ <expression>
+ <term>
+ <identifier> Asize </identifier>
+ </term>
+ </expression>
+ <symbol> ; </symbol>
+ </letStatement>
+ <doStatement>
+ <keyword> do </keyword>
+ <identifier> draw </identifier>
+ <symbol> ( </symbol>
+ <expressionList>
+ </expressionList>
+ <symbol> ) </symbol>
+ <symbol> ; </symbol>
+ </doStatement>
+ <returnStatement>
+ <keyword> return </keyword>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ <symbol> ; </symbol>
+ </returnStatement>
+ </statements>
+ <symbol> } </symbol>
+ </subroutineBody>
+ </subroutineDec>
+ <subroutineDec>
+ <keyword> method </keyword>
+ <keyword> void </keyword>
+ <identifier> dispose </identifier>
+ <symbol> ( </symbol>
+ <parameterList>
+ </parameterList>
+ <symbol> ) </symbol>
+ <subroutineBody>
+ <symbol> { </symbol>
+ <statements>
+ <doStatement>
+ <keyword> do </keyword>
+ <identifier> Memory </identifier>
+ <symbol> . </symbol>
+ <identifier> deAlloc </identifier>
+ <symbol> ( </symbol>
+ <expressionList>
+ <expression>
+ <term>
+ <keyword> this </keyword>
+ </term>
+ </expression>
+ </expressionList>
+ <symbol> ) </symbol>
+ <symbol> ; </symbol>
+ </doStatement>
+ <returnStatement>
+ <keyword> return </keyword>
+ <symbol> ; </symbol>
+ </returnStatement>
+ </statements>
+ <symbol> } </symbol>
+ </subroutineBody>
+ </subroutineDec>
+ <subroutineDec>
+ <keyword> method </keyword>
+ <keyword> void </keyword>
+ <identifier> draw </identifier>
+ <symbol> ( </symbol>
+ <parameterList>
+ </parameterList>
+ <symbol> ) </symbol>
+ <subroutineBody>
+ <symbol> { </symbol>
+ <statements>
+ <doStatement>
+ <keyword> do </keyword>
+ <identifier> Screen </identifier>
+ <symbol> . </symbol>
+ <identifier> setColor </identifier>
+ <symbol> ( </symbol>
+ <expressionList>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ </expressionList>
+ <symbol> ) </symbol>
+ <symbol> ; </symbol>
+ </doStatement>
+ <doStatement>
+ <keyword> do </keyword>
+ <identifier> Screen </identifier>
+ <symbol> . </symbol>
+ <identifier> drawRectangle </identifier>
+ <symbol> ( </symbol>
+ <expressionList>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> y </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> y </identifier>
+ </term>
+ </expression>
+ </expressionList>
+ <symbol> ) </symbol>
+ <symbol> ; </symbol>
+ </doStatement>
+ <returnStatement>
+ <keyword> return </keyword>
+ <symbol> ; </symbol>
+ </returnStatement>
+ </statements>
+ <symbol> } </symbol>
+ </subroutineBody>
+ </subroutineDec>
+ <subroutineDec>
+ <keyword> method </keyword>
+ <keyword> void </keyword>
+ <identifier> erase </identifier>
+ <symbol> ( </symbol>
+ <parameterList>
+ </parameterList>
+ <symbol> ) </symbol>
+ <subroutineBody>
+ <symbol> { </symbol>
+ <statements>
+ <doStatement>
+ <keyword> do </keyword>
+ <identifier> Screen </identifier>
+ <symbol> . </symbol>
+ <identifier> setColor </identifier>
+ <symbol> ( </symbol>
+ <expressionList>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ </expressionList>
+ <symbol> ) </symbol>
+ <symbol> ; </symbol>
+ </doStatement>
+ <doStatement>
+ <keyword> do </keyword>
+ <identifier> Screen </identifier>
+ <symbol> . </symbol>
+ <identifier> drawRectangle </identifier>
+ <symbol> ( </symbol>
+ <expressionList>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> y </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> y </identifier>
+ </term>
+ </expression>
+ </expressionList>
+ <symbol> ) </symbol>
+ <symbol> ; </symbol>
+ </doStatement>
+ <returnStatement>
+ <keyword> return </keyword>
+ <symbol> ; </symbol>
+ </returnStatement>
+ </statements>
+ <symbol> } </symbol>
+ </subroutineBody>
+ </subroutineDec>
+ <subroutineDec>
+ <keyword> method </keyword>
+ <keyword> void </keyword>
+ <identifier> incSize </identifier>
+ <symbol> ( </symbol>
+ <parameterList>
+ </parameterList>
+ <symbol> ) </symbol>
+ <subroutineBody>
+ <symbol> { </symbol>
+ <statements>
+ <ifStatement>
+ <keyword> if </keyword>
+ <symbol> ( </symbol>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ <symbol> ) </symbol>
+ <symbol> { </symbol>
+ <statements>
+ <doStatement>
+ <keyword> do </keyword>
+ <identifier> erase </identifier>
+ <symbol> ( </symbol>
+ <expressionList>
+ </expressionList>
+ <symbol> ) </symbol>
+ <symbol> ; </symbol>
+ </doStatement>
+ <letStatement>
+ <keyword> let </keyword>
+ <identifier> size </identifier>
+ <symbol> = </symbol>
+ <expression>
+ <term>
+ <identifier> size </identifier>
+ </term>
+ </expression>
+ <symbol> ; </symbol>
+ </letStatement>
+ <doStatement>
+ <keyword> do </keyword>
+ <identifier> draw </identifier>
+ <symbol> ( </symbol>
+ <expressionList>
+ </expressionList>
+ <symbol> ) </symbol>
+ <symbol> ; </symbol>
+ </doStatement>
+ </statements>
+ <symbol> } </symbol>
+ </ifStatement>
+ <returnStatement>
+ <keyword> return </keyword>
+ <symbol> ; </symbol>
+ </returnStatement>
+ </statements>
+ <symbol> } </symbol>
+ </subroutineBody>
+ </subroutineDec>
+ <subroutineDec>
+ <keyword> method </keyword>
+ <keyword> void </keyword>
+ <identifier> decSize </identifier>
+ <symbol> ( </symbol>
+ <parameterList>
+ </parameterList>
+ <symbol> ) </symbol>
+ <subroutineBody>
+ <symbol> { </symbol>
+ <statements>
+ <ifStatement>
+ <keyword> if </keyword>
+ <symbol> ( </symbol>
+ <expression>
+ <term>
+ <identifier> size </identifier>
+ </term>
+ </expression>
+ <symbol> ) </symbol>
+ <symbol> { </symbol>
+ <statements>
+ <doStatement>
+ <keyword> do </keyword>
+ <identifier> erase </identifier>
+ <symbol> ( </symbol>
+ <expressionList>
+ </expressionList>
+ <symbol> ) </symbol>
+ <symbol> ; </symbol>
+ </doStatement>
+ <letStatement>
+ <keyword> let </keyword>
+ <identifier> size </identifier>
+ <symbol> = </symbol>
+ <expression>
+ <term>
+ <identifier> size </identifier>
+ </term>
+ </expression>
+ <symbol> ; </symbol>
+ </letStatement>
+ <doStatement>
+ <keyword> do </keyword>
+ <identifier> draw </identifier>
+ <symbol> ( </symbol>
+ <expressionList>
+ </expressionList>
+ <symbol> ) </symbol>
+ <symbol> ; </symbol>
+ </doStatement>
+ </statements>
+ <symbol> } </symbol>
+ </ifStatement>
+ <returnStatement>
+ <keyword> return </keyword>
+ <symbol> ; </symbol>
+ </returnStatement>
+ </statements>
+ <symbol> } </symbol>
+ </subroutineBody>
+ </subroutineDec>
+ <subroutineDec>
+ <keyword> method </keyword>
+ <keyword> void </keyword>
+ <identifier> moveUp </identifier>
+ <symbol> ( </symbol>
+ <parameterList>
+ </parameterList>
+ <symbol> ) </symbol>
+ <subroutineBody>
+ <symbol> { </symbol>
+ <statements>
+ <ifStatement>
+ <keyword> if </keyword>
+ <symbol> ( </symbol>
+ <expression>
+ <term>
+ <identifier> y </identifier>
+ </term>
+ </expression>
+ <symbol> ) </symbol>
+ <symbol> { </symbol>
+ <statements>
+ <doStatement>
+ <keyword> do </keyword>
+ <identifier> Screen </identifier>
+ <symbol> . </symbol>
+ <identifier> setColor </identifier>
+ <symbol> ( </symbol>
+ <expressionList>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ </expressionList>
+ <symbol> ) </symbol>
+ <symbol> ; </symbol>
+ </doStatement>
+ <doStatement>
+ <keyword> do </keyword>
+ <identifier> Screen </identifier>
+ <symbol> . </symbol>
+ <identifier> drawRectangle </identifier>
+ <symbol> ( </symbol>
+ <expressionList>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> y </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> y </identifier>
+ </term>
+ </expression>
+ </expressionList>
+ <symbol> ) </symbol>
+ <symbol> ; </symbol>
+ </doStatement>
+ <letStatement>
+ <keyword> let </keyword>
+ <identifier> y </identifier>
+ <symbol> = </symbol>
+ <expression>
+ <term>
+ <identifier> y </identifier>
+ </term>
+ </expression>
+ <symbol> ; </symbol>
+ </letStatement>
+ <doStatement>
+ <keyword> do </keyword>
+ <identifier> Screen </identifier>
+ <symbol> . </symbol>
+ <identifier> setColor </identifier>
+ <symbol> ( </symbol>
+ <expressionList>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ </expressionList>
+ <symbol> ) </symbol>
+ <symbol> ; </symbol>
+ </doStatement>
+ <doStatement>
+ <keyword> do </keyword>
+ <identifier> Screen </identifier>
+ <symbol> . </symbol>
+ <identifier> drawRectangle </identifier>
+ <symbol> ( </symbol>
+ <expressionList>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> y </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> y </identifier>
+ </term>
+ </expression>
+ </expressionList>
+ <symbol> ) </symbol>
+ <symbol> ; </symbol>
+ </doStatement>
+ </statements>
+ <symbol> } </symbol>
+ </ifStatement>
+ <returnStatement>
+ <keyword> return </keyword>
+ <symbol> ; </symbol>
+ </returnStatement>
+ </statements>
+ <symbol> } </symbol>
+ </subroutineBody>
+ </subroutineDec>
+ <subroutineDec>
+ <keyword> method </keyword>
+ <keyword> void </keyword>
+ <identifier> moveDown </identifier>
+ <symbol> ( </symbol>
+ <parameterList>
+ </parameterList>
+ <symbol> ) </symbol>
+ <subroutineBody>
+ <symbol> { </symbol>
+ <statements>
+ <ifStatement>
+ <keyword> if </keyword>
+ <symbol> ( </symbol>
+ <expression>
+ <term>
+ <identifier> y </identifier>
+ </term>
+ </expression>
+ <symbol> ) </symbol>
+ <symbol> { </symbol>
+ <statements>
+ <doStatement>
+ <keyword> do </keyword>
+ <identifier> Screen </identifier>
+ <symbol> . </symbol>
+ <identifier> setColor </identifier>
+ <symbol> ( </symbol>
+ <expressionList>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ </expressionList>
+ <symbol> ) </symbol>
+ <symbol> ; </symbol>
+ </doStatement>
+ <doStatement>
+ <keyword> do </keyword>
+ <identifier> Screen </identifier>
+ <symbol> . </symbol>
+ <identifier> drawRectangle </identifier>
+ <symbol> ( </symbol>
+ <expressionList>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> y </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> y </identifier>
+ </term>
+ </expression>
+ </expressionList>
+ <symbol> ) </symbol>
+ <symbol> ; </symbol>
+ </doStatement>
+ <letStatement>
+ <keyword> let </keyword>
+ <identifier> y </identifier>
+ <symbol> = </symbol>
+ <expression>
+ <term>
+ <identifier> y </identifier>
+ </term>
+ </expression>
+ <symbol> ; </symbol>
+ </letStatement>
+ <doStatement>
+ <keyword> do </keyword>
+ <identifier> Screen </identifier>
+ <symbol> . </symbol>
+ <identifier> setColor </identifier>
+ <symbol> ( </symbol>
+ <expressionList>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ </expressionList>
+ <symbol> ) </symbol>
+ <symbol> ; </symbol>
+ </doStatement>
+ <doStatement>
+ <keyword> do </keyword>
+ <identifier> Screen </identifier>
+ <symbol> . </symbol>
+ <identifier> drawRectangle </identifier>
+ <symbol> ( </symbol>
+ <expressionList>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> y </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> y </identifier>
+ </term>
+ </expression>
+ </expressionList>
+ <symbol> ) </symbol>
+ <symbol> ; </symbol>
+ </doStatement>
+ </statements>
+ <symbol> } </symbol>
+ </ifStatement>
+ <returnStatement>
+ <keyword> return </keyword>
+ <symbol> ; </symbol>
+ </returnStatement>
+ </statements>
+ <symbol> } </symbol>
+ </subroutineBody>
+ </subroutineDec>
+ <subroutineDec>
+ <keyword> method </keyword>
+ <keyword> void </keyword>
+ <identifier> moveLeft </identifier>
+ <symbol> ( </symbol>
+ <parameterList>
+ </parameterList>
+ <symbol> ) </symbol>
+ <subroutineBody>
+ <symbol> { </symbol>
+ <statements>
+ <ifStatement>
+ <keyword> if </keyword>
+ <symbol> ( </symbol>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ <symbol> ) </symbol>
+ <symbol> { </symbol>
+ <statements>
+ <doStatement>
+ <keyword> do </keyword>
+ <identifier> Screen </identifier>
+ <symbol> . </symbol>
+ <identifier> setColor </identifier>
+ <symbol> ( </symbol>
+ <expressionList>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ </expressionList>
+ <symbol> ) </symbol>
+ <symbol> ; </symbol>
+ </doStatement>
+ <doStatement>
+ <keyword> do </keyword>
+ <identifier> Screen </identifier>
+ <symbol> . </symbol>
+ <identifier> drawRectangle </identifier>
+ <symbol> ( </symbol>
+ <expressionList>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> y </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> y </identifier>
+ </term>
+ </expression>
+ </expressionList>
+ <symbol> ) </symbol>
+ <symbol> ; </symbol>
+ </doStatement>
+ <letStatement>
+ <keyword> let </keyword>
+ <identifier> x </identifier>
+ <symbol> = </symbol>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ <symbol> ; </symbol>
+ </letStatement>
+ <doStatement>
+ <keyword> do </keyword>
+ <identifier> Screen </identifier>
+ <symbol> . </symbol>
+ <identifier> setColor </identifier>
+ <symbol> ( </symbol>
+ <expressionList>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ </expressionList>
+ <symbol> ) </symbol>
+ <symbol> ; </symbol>
+ </doStatement>
+ <doStatement>
+ <keyword> do </keyword>
+ <identifier> Screen </identifier>
+ <symbol> . </symbol>
+ <identifier> drawRectangle </identifier>
+ <symbol> ( </symbol>
+ <expressionList>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> y </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> y </identifier>
+ </term>
+ </expression>
+ </expressionList>
+ <symbol> ) </symbol>
+ <symbol> ; </symbol>
+ </doStatement>
+ </statements>
+ <symbol> } </symbol>
+ </ifStatement>
+ <returnStatement>
+ <keyword> return </keyword>
+ <symbol> ; </symbol>
+ </returnStatement>
+ </statements>
+ <symbol> } </symbol>
+ </subroutineBody>
+ </subroutineDec>
+ <subroutineDec>
+ <keyword> method </keyword>
+ <keyword> void </keyword>
+ <identifier> moveRight </identifier>
+ <symbol> ( </symbol>
+ <parameterList>
+ </parameterList>
+ <symbol> ) </symbol>
+ <subroutineBody>
+ <symbol> { </symbol>
+ <statements>
+ <ifStatement>
+ <keyword> if </keyword>
+ <symbol> ( </symbol>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ <symbol> ) </symbol>
+ <symbol> { </symbol>
+ <statements>
+ <doStatement>
+ <keyword> do </keyword>
+ <identifier> Screen </identifier>
+ <symbol> . </symbol>
+ <identifier> setColor </identifier>
+ <symbol> ( </symbol>
+ <expressionList>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ </expressionList>
+ <symbol> ) </symbol>
+ <symbol> ; </symbol>
+ </doStatement>
+ <doStatement>
+ <keyword> do </keyword>
+ <identifier> Screen </identifier>
+ <symbol> . </symbol>
+ <identifier> drawRectangle </identifier>
+ <symbol> ( </symbol>
+ <expressionList>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> y </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> y </identifier>
+ </term>
+ </expression>
+ </expressionList>
+ <symbol> ) </symbol>
+ <symbol> ; </symbol>
+ </doStatement>
+ <letStatement>
+ <keyword> let </keyword>
+ <identifier> x </identifier>
+ <symbol> = </symbol>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ <symbol> ; </symbol>
+ </letStatement>
+ <doStatement>
+ <keyword> do </keyword>
+ <identifier> Screen </identifier>
+ <symbol> . </symbol>
+ <identifier> setColor </identifier>
+ <symbol> ( </symbol>
+ <expressionList>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ </expressionList>
+ <symbol> ) </symbol>
+ <symbol> ; </symbol>
+ </doStatement>
+ <doStatement>
+ <keyword> do </keyword>
+ <identifier> Screen </identifier>
+ <symbol> . </symbol>
+ <identifier> drawRectangle </identifier>
+ <symbol> ( </symbol>
+ <expressionList>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> y </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> x </identifier>
+ </term>
+ </expression>
+ <symbol> , </symbol>
+ <expression>
+ <term>
+ <identifier> y </identifier>
+ </term>
+ </expression>
+ </expressionList>
+ <symbol> ) </symbol>
+ <symbol> ; </symbol>
+ </doStatement>
+ </statements>
+ <symbol> } </symbol>
+ </ifStatement>
+ <returnStatement>
+ <keyword> return </keyword>
+ <symbol> ; </symbol>
+ </returnStatement>
+ </statements>
+ <symbol> } </symbol>
+ </subroutineBody>
+ </subroutineDec>
+ <symbol> } </symbol>
+</class>
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