semester05-compiler_construction/exercise05
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finished exercise

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This commit is contained in:
quirinecker
2025-11-08 17:16:16 +01:00
parent e854da56aa
commit c1eef57c97
21 changed files with 348 additions and 95 deletions
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15
.idea/.gitignore generated vendored
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@@ -1,5 +1,10 @@
# Default ignored files # Default ignored files
/shelf/ /shelf/
/workspace.xml /workspace.xml
# Editor-based HTTP Client requests # Editor-based HTTP Client requests
/httpRequests/ /httpRequests/
# Datasource local storage ignored files
/dataSources/
/dataSources.local.xml
# GitHub Copilot persisted chat sessions
/copilot/chatSessions

104
.idea/MicroJava.iml generated Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<module type="JAVA_MODULE" version="4">
<component name="NewModuleRootManager" inherit-compiler-output="true">
<exclude-output />
<content url="file://$MODULE_DIR$">
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<library>
<CLASSES>
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<library>
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<library>
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<orderEntry type="module-library" scope="TEST">
<library>
<CLASSES>
<root url="jar://$MODULE_DIR$/lib/opentest4j-1.3.0.jar!/" />
</CLASSES>
<JAVADOC />
<SOURCES />
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10
.idea/codeStyles/Project.xml generated Normal file
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@@ -0,0 +1,10 @@
<component name="ProjectCodeStyleConfiguration">
<code_scheme name="Project" version="173">
<codeStyleSettings language="JAVA">
<indentOptions>
<option name="INDENT_SIZE" value="2" />
<option name="TAB_SIZE" value="2" />
</indentOptions>
</codeStyleSettings>
</code_scheme>
</component>

5
.idea/codeStyles/codeStyleConfig.xml generated Normal file
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@@ -0,0 +1,5 @@
<component name="ProjectCodeStyleConfiguration">
<state>
<option name="USE_PER_PROJECT_SETTINGS" value="true" />
</state>
</component>

0
.idea/exercise05.iml → .idea/exercise02.iml generated
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8
.idea/inspectionProfiles/Project_Default.xml generated Normal file
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@@ -0,0 +1,8 @@
<component name="InspectionProjectProfileManager">
<profile version="1.0">
<option name="myName" value="Project Default" />
<inspection_tool class="AutoCloseableResource" enabled="true" level="WARNING" enabled_by_default="true">
<option name="METHOD_MATCHER_CONFIG" value="java.util.Formatter,format,java.io.Writer,append,com.google.common.base.Preconditions,checkNotNull,org.hibernate.Session,close,java.io.PrintWriter,printf,java.io.PrintStream,printf,java.net.http.HttpClient,newHttpClient" />
</inspection_tool>
</profile>
</component>

33
.idea/libraries/lib2.xml → .idea/libraries/junit_jupiter.xml generated
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@@ -1,18 +1,17 @@
<component name="libraryTable"> <component name="libraryTable">
<library name="lib2"> <library name="junit.jupiter" type="repository">
<CLASSES> <properties maven-id="org.junit.jupiter:junit-jupiter:5.12.2" />
<root url="jar://$PROJECT_DIR$/lib/junit-jupiter-engine-5.12.2.jar!/" /> <CLASSES>
<root url="jar://$PROJECT_DIR$/lib/junit-jupiter-api-5.12.2.jar!/" /> <root url="jar://$PROJECT_DIR$/lib/junit-jupiter-5.12.2.jar!/" />
<root url="jar://$PROJECT_DIR$/lib/junit-jupiter-5.12.2.jar!/" /> <root url="jar://$PROJECT_DIR$/lib/junit-jupiter-api-5.12.2.jar!/" />
<root url="jar://$PROJECT_DIR$/lib/apiguardian-api-1.1.2.jar!/" /> <root url="jar://$PROJECT_DIR$/lib/opentest4j-1.3.0.jar!/" />
<root url="jar://$PROJECT_DIR$/lib/junit-platform-engine-1.12.2.jar!/" /> <root url="jar://$PROJECT_DIR$/lib/junit-platform-commons-1.12.2.jar!/" />
<root url="jar://$PROJECT_DIR$/lib/opentest4j-1.3.0.jar!/" /> <root url="jar://$PROJECT_DIR$/lib/apiguardian-api-1.1.2.jar!/" />
<root url="jar://$PROJECT_DIR$/lib/junit-platform-commons-1.12.2.jar!/" /> <root url="jar://$PROJECT_DIR$/lib/junit-jupiter-params-5.12.2.jar!/" />
<root url="jar://$PROJECT_DIR$/lib/javassist.jar!/" /> <root url="jar://$PROJECT_DIR$/lib/junit-jupiter-engine-5.12.2.jar!/" />
<root url="jar://$PROJECT_DIR$/lib/gson-2.10.1.jar!/" /> <root url="jar://$PROJECT_DIR$/lib/junit-platform-engine-1.12.2.jar!/" />
<root url="jar://$PROJECT_DIR$/lib/junit-jupiter-params-5.12.2.jar!/" /> </CLASSES>
</CLASSES> <JAVADOC />
<JAVADOC /> <SOURCES />
<SOURCES /> </library>
</library>
</component> </component>

18
.idea/libraries/lib.xml generated
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@@ -1,18 +0,0 @@
<component name="libraryTable">
<library name="lib">
<CLASSES>
<root url="jar://$PROJECT_DIR$/out/lib/junit-jupiter-5.12.2.jar!/" />
<root url="jar://$PROJECT_DIR$/out/lib/apiguardian-api-1.1.2.jar!/" />
<root url="jar://$PROJECT_DIR$/out/lib/javassist.jar!/" />
<root url="jar://$PROJECT_DIR$/out/lib/junit-jupiter-api-5.12.2.jar!/" />
<root url="jar://$PROJECT_DIR$/out/lib/junit-jupiter-params-5.12.2.jar!/" />
<root url="jar://$PROJECT_DIR$/out/lib/junit-jupiter-engine-5.12.2.jar!/" />
<root url="jar://$PROJECT_DIR$/out/lib/gson-2.10.1.jar!/" />
<root url="jar://$PROJECT_DIR$/out/lib/opentest4j-1.3.0.jar!/" />
<root url="jar://$PROJECT_DIR$/out/lib/junit-platform-engine-1.12.2.jar!/" />
<root url="jar://$PROJECT_DIR$/out/lib/junit-platform-commons-1.12.2.jar!/" />
</CLASSES>
<JAVADOC />
<SOURCES />
</library>
</component>

9
.idea/misc.xml generated
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@@ -1,6 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?> <project version="4">
<project version="4"> <component name="ProjectRootManager" version="2" project-jdk-name="openjdk-21" project-jdk-type="JavaSDK">
<component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="21" project-jdk-type="JavaSDK"> <output url="file://$PROJECT_DIR$/out" />
<output url="file://$PROJECT_DIR$/out" /> </component>
</component>
</project> </project>

18
.idea/modules.xml generated
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@@ -1,12 +1,8 @@
<?xml version="1.0" encoding="UTF-8"?> <?xml version="1.0" encoding="UTF-8"?>
<project version="4"> <project version="4">
<component name="ProjectModuleManager"> <component name="ProjectModuleManager">
<modules> <modules>
<module fileurl="file://$PROJECT_DIR$/MicroJava Compiler/MicroJava Compiler.iml" filepath="$PROJECT_DIR$/MicroJava Compiler/MicroJava Compiler.iml" /> <module fileurl="file://$PROJECT_DIR$/.idea/MicroJava.iml" filepath="$PROJECT_DIR$/.idea/MicroJava.iml" />
<module fileurl="file://$PROJECT_DIR$/out/MicroJava Compiler/MicroJava Compiler2.iml" filepath="$PROJECT_DIR$/out/MicroJava Compiler/MicroJava Compiler2.iml" /> </modules>
<module fileurl="file://$PROJECT_DIR$/out/MicroJava Tests/MicroJava Tests.iml" filepath="$PROJECT_DIR$/out/MicroJava Tests/MicroJava Tests.iml" /> </component>
<module fileurl="file://$PROJECT_DIR$/MicroJava Tests/MicroJava Tests2.iml" filepath="$PROJECT_DIR$/MicroJava Tests/MicroJava Tests2.iml" />
<module fileurl="file://$PROJECT_DIR$/.idea/exercise05.iml" filepath="$PROJECT_DIR$/.idea/exercise05.iml" />
</modules>
</component>
</project> </project>

19
.idea/runConfigurations/UE_P_1.xml generated Normal file
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@@ -0,0 +1,19 @@
<component name="ProjectRunConfigurationManager">
<configuration default="false" name="UE-P-1" type="JUnit" factoryName="JUnit">
<module name="MicroJava" />
<extension name="coverage">
<pattern>
<option name="PATTERN" value="ssw.mj.*" />
<option name="ENABLED" value="true" />
</pattern>
</extension>
<option name="PACKAGE_NAME" value="ssw.mj.test" />
<option name="MAIN_CLASS_NAME" value="ssw.mj.test.ScannerTest" />
<option name="METHOD_NAME" value="" />
<option name="TEST_OBJECT" value="class" />
<option name="VM_PARAMETERS" value="-ea -Djava.system.class.loader=ssw.mj.TracingClassLoader" />
<method v="2">
<option name="Make" enabled="true" />
</method>
</configuration>
</component>

16
.idea/runConfigurations/UE_P_2.xml generated Normal file
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@@ -0,0 +1,16 @@
<component name="ProjectRunConfigurationManager">
<configuration default="false" name="UE-P-2" type="JUnit" factoryName="JUnit">
<module name="MicroJava" />
<option name="MAIN_CLASS_NAME" value="" />
<option name="METHOD_NAME" value="" />
<option name="TEST_OBJECT" value="pattern" />
<option name="VM_PARAMETERS" value="-ea -Djava.system.class.loader=ssw.mj.TracingClassLoader" />
<patterns>
<pattern testClass="ssw.mj.test.ScannerTest" />
<pattern testClass="ssw.mj.test.ParserTest" />
</patterns>
<method v="2">
<option name="Make" enabled="true" />
</method>
</configuration>
</component>

17
.idea/runConfigurations/UE_P_3.xml generated Normal file
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<component name="ProjectRunConfigurationManager">
<configuration default="false" name="UE-P-3" type="JUnit" factoryName="JUnit">
<module name="MicroJava" />
<option name="MAIN_CLASS_NAME" value="" />
<option name="METHOD_NAME" value="" />
<option name="TEST_OBJECT" value="pattern" />
<option name="VM_PARAMETERS" value="-ea -Djava.system.class.loader=ssw.mj.TracingClassLoader" />
<patterns>
<pattern testClass="ssw.mj.test.ScannerTest" />
<pattern testClass="ssw.mj.test.ParserTest" />
<pattern testClass="ssw.mj.test.RecoverTest" />
</patterns>
<method v="2">
<option name="Make" enabled="true" />
</method>
</configuration>
</component>

18
.idea/runConfigurations/UE_P_4.xml generated Normal file
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@@ -0,0 +1,18 @@
<component name="ProjectRunConfigurationManager">
<configuration default="false" name="UE-P-4" type="JUnit" factoryName="JUnit">
<module name="MicroJava" />
<option name="MAIN_CLASS_NAME" value="" />
<option name="METHOD_NAME" value="" />
<option name="TEST_OBJECT" value="pattern" />
<option name="VM_PARAMETERS" value="-ea -Djava.system.class.loader=ssw.mj.TracingClassLoader" />
<patterns>
<pattern testClass="ssw.mj.test.ScannerTest" />
<pattern testClass="ssw.mj.test.ParserTest" />
<pattern testClass="ssw.mj.test.RecoverTest" />
<pattern testClass="ssw.mj.test.SymbolTableTest" />
</patterns>
<method v="2">
<option name="Make" enabled="true" />
</method>
</configuration>
</component>

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.idea/runConfigurations/UE_P_5.xml generated Normal file
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<component name="ProjectRunConfigurationManager">
<configuration default="false" name="UE-P-5" type="JUnit" factoryName="JUnit">
<module name="MicroJava" />
<option name="MAIN_CLASS_NAME" value="" />
<option name="METHOD_NAME" value="" />
<option name="TEST_OBJECT" value="pattern" />
<option name="VM_PARAMETERS" value="-ea -Djava.system.class.loader=ssw.mj.TracingClassLoader" />
<patterns>
<pattern testClass="ssw.mj.test.ScannerTest" />
<pattern testClass="ssw.mj.test.ParserTest" />
<pattern testClass="ssw.mj.test.RecoverTest" />
<pattern testClass="ssw.mj.test.SymbolTableTest" />
<pattern testClass="ssw.mj.test.SimpleCodeGenerationTest" />
</patterns>
<method v="2">
<option name="Make" enabled="true" />
</method>
</configuration>
</component>

13
.idea/runConfigurations/UE_P_6.xml generated Normal file
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@@ -0,0 +1,13 @@
<component name="ProjectRunConfigurationManager">
<configuration default="false" name="UE-P-6" type="JUnit" factoryName="JUnit">
<module name="MicroJava" />
<option name="MAIN_CLASS_NAME" value="" />
<option name="METHOD_NAME" value="" />
<option name="TEST_OBJECT" value="directory" />
<option name="VM_PARAMETERS" value="-ea -Djava.system.class.loader=ssw.mj.TracingClassLoader" />
<dir value="$PROJECT_DIR$/MicroJava Tests/tests" />
<method v="2">
<option name="Make" enabled="true" />
</method>
</configuration>
</component>

13
.idea/runConfigurations/_for_lecturers__Run_verbose_tracing.xml generated Normal file
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@@ -0,0 +1,13 @@
<component name="ProjectRunConfigurationManager">
<configuration default="false" name="(for lecturers) Run verbose tracing" type="JUnit" factoryName="JUnit">
<module name="MicroJava" />
<option name="MAIN_CLASS_NAME" value="" />
<option name="METHOD_NAME" value="" />
<option name="TEST_OBJECT" value="directory" />
<option name="VM_PARAMETERS" value="-ea -verbose:class -verbose:dynload -Djava.system.class.loader=ssw.mj.TracingClassLoader" />
<dir value="$PROJECT_DIR$/MicroJava Tests/tests" />
<method v="2">
<option name="Make" enabled="true" />
</method>
</configuration>
</component>

6
.idea/vcs.xml generated Normal file
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@@ -0,0 +1,6 @@
<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="VcsDirectoryMappings">
<mapping directory="" vcs="Git" />
</component>
</project>

13
MicroJava Compiler/MicroJava Compiler.iml
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@@ -1,13 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<module type="JAVA_MODULE" version="4">
<component name="NewModuleRootManager" inherit-compiler-output="true">
<exclude-output />
<content url="file://$MODULE_DIR$">
<sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
</content>
<orderEntry type="inheritedJdk" />
<orderEntry type="sourceFolder" forTests="false" />
<orderEntry type="library" name="lib2" level="project" />
<orderEntry type="library" name="lib" level="project" />
</component>
</module>

74
MicroJava Compiler/src/ssw/mj/impl/Parser.java
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@@ -9,8 +9,7 @@ import ssw.mj.scanner.Token;
import javax.xml.stream.FactoryConfigurationError; import javax.xml.stream.FactoryConfigurationError;
import java.util.EnumSet; import java.util.EnumSet;
import static ssw.mj.Errors.Message.TOKEN_EXPECTED; import static ssw.mj.Errors.Message.*;
import static ssw.mj.Errors.Message.UNDEFINED_ESCAPE;
import static ssw.mj.scanner.Token.Kind.*; import static ssw.mj.scanner.Token.Kind.*;
public final class Parser { public final class Parser {
@@ -60,6 +59,10 @@ public final class Parser {
*/ */
public final Tab tab; public final Tab tab;
private static int MIN_ERROR_DIST = 3;
private int errorDist = MIN_ERROR_DIST;
public Parser(Scanner scanner) { public Parser(Scanner scanner) {
this.scanner = scanner; this.scanner = scanner;
tab = new Tab(this); tab = new Tab(this);
@@ -76,6 +79,7 @@ public final class Parser {
t = la; t = la;
la = scanner.next(); la = scanner.next();
sym = la.kind; sym = la.kind;
errorDist++;
} }
/** /**
@@ -95,8 +99,12 @@ public final class Parser {
public void error(Message msg, Object... msgParams) { public void error(Message msg, Object... msgParams) {
// TODO Exercise UE-P-3: Replace panic mode with error recovery (i.e., keep track of error distance) // TODO Exercise UE-P-3: Replace panic mode with error recovery (i.e., keep track of error distance)
// TODO Exercise UE-P-3: Hint: Replacing panic mode also affects scan() method // TODO Exercise UE-P-3: Hint: Replacing panic mode also affects scan() method
scanner.errors.error(la.line, la.col, msg, msgParams);
throw new Errors.PanicMode(); if (errorDist >= MIN_ERROR_DIST) {
scanner.errors.error(la.line, la.col, msg, msgParams);
}
errorDist = 0;
} }
/** /**
@@ -124,10 +132,15 @@ public final class Parser {
static final EnumSet<Token.Kind> firstConstDecl = EnumSet.of(Token.Kind.final_); static final EnumSet<Token.Kind> firstConstDecl = EnumSet.of(Token.Kind.final_);
static final EnumSet<Token.Kind> firstVarDecl = EnumSet.of(Token.Kind.ident); static final EnumSet<Token.Kind> firstVarDecl = EnumSet.of(Token.Kind.ident);
static final EnumSet<Token.Kind> firstClassDecl = EnumSet.of(Token.Kind.class_); static final EnumSet<Token.Kind> firstClassDecl = EnumSet.of(Token.Kind.class_);
static final EnumSet<Token.Kind> breakDecl = EnumSet.of(lbrace, eof);
static final EnumSet<Token.Kind> firstStatement = EnumSet.of(ident, if_, while_, break_, return_, read, print, lbrace, semicolon); static final EnumSet<Token.Kind> firstStatement = EnumSet.of(ident, if_, while_, break_, return_, read, print, lbrace, semicolon);
static final EnumSet<Token.Kind> breakStatement = EnumSet.of(rbrace, else_, eof);
static final EnumSet<Token.Kind> firstAsignop = EnumSet.of(assign, plusas, minusas, timesas, slashas, remas); static final EnumSet<Token.Kind> firstAsignop = EnumSet.of(assign, plusas, minusas, timesas, slashas, remas);
static final EnumSet<Token.Kind> firstFactor = EnumSet.of(ident, number, charConst, new_, lpar); static final EnumSet<Token.Kind> firstFactor = EnumSet.of(ident, number, charConst, new_, lpar);
static final EnumSet<Token.Kind> firstMulop = EnumSet.of(times, slash, rem); static final EnumSet<Token.Kind> firstMulop = EnumSet.of(times, slash, rem);
static final EnumSet<Token.Kind> firstMethodDecl = EnumSet.of(ident, void_);
static final EnumSet<Token.Kind> breakMethodDecl = EnumSet.of(rbrace, eof);
static <T extends Enum<T>> EnumSet<T> enumUnion(EnumSet<T> first, EnumSet<T> ...sets) { static <T extends Enum<T>> EnumSet<T> enumUnion(EnumSet<T> first, EnumSet<T> ...sets) {
final var copy = EnumSet.copyOf(first); final var copy = EnumSet.copyOf(first);
@@ -154,22 +167,26 @@ public final class Parser {
check(Token.Kind.program); check(Token.Kind.program);
check(Token.Kind.ident); check(Token.Kind.ident);
final var firstDeclarationUnion = enumUnion(firstConstDecl, firstVarDecl, firstClassDecl); while (!breakDecl.contains(sym)) {
while (firstDeclarationUnion.contains(sym)) {
if (firstVarDecl.contains(sym)) { if (firstVarDecl.contains(sym)) {
VarDecl(); VarDecl();
} else if (firstClassDecl.contains(sym)) { } else if (firstClassDecl.contains(sym)) {
ClassDecl(); ClassDecl();
} else { } else if (firstConstDecl.contains(sym)){
ConstDecl(); ConstDecl();
} else {
recoverDecl();
} }
} }
check(lbrace); check(lbrace);
while (sym == ident || sym == void_) { while (!breakMethodDecl.contains(sym)) {
MethodDecl(); if (firstMethodDecl.contains(sym)) {
MethodDecl();
} else {
recoverMethodDecl();
}
} }
check(rbrace); check(rbrace);
@@ -266,7 +283,7 @@ public final class Parser {
} }
private void Statement() { private void Statement() {
while (firstStatement.contains(sym)) { while (!breakStatement.contains(sym)) {
switch (sym) { switch (sym) {
case ident -> { case ident -> {
Designator(); Designator();
@@ -340,6 +357,7 @@ public final class Parser {
} }
case lbrace -> Block(); case lbrace -> Block();
case semicolon -> scan(); case semicolon -> scan();
default -> recoverStatement();
}; };
} }
} }
@@ -504,6 +522,40 @@ public final class Parser {
// TODO Exercise UE-P-3: Error recovery methods: recoverDecl, recoverMethodDecl and recoverStat (+ TODO Exercise UE-P-5: Check idents for Type kind) // TODO Exercise UE-P-3: Error recovery methods: recoverDecl, recoverMethodDecl and recoverStat (+ TODO Exercise UE-P-5: Check idents for Type kind)
private void recoverDecl() {
final var firstDeclarationUnion = enumUnion(firstConstDecl, firstVarDecl, firstClassDecl);
final var recoverDeclSet = enumUnion(breakDecl, firstDeclarationUnion);
error(DECLARATION_RECOVERY);
do {
scan();
} while (!recoverDeclSet.contains(sym));
errorDist = 0;
}
private void recoverMethodDecl() {
error(METHOD_DECL_RECOVERY);
final var recoveryMethoDeclSet = enumUnion(breakMethodDecl, firstMethodDecl);
do {
scan();
} while (!recoveryMethoDeclSet.contains(sym));
errorDist = 0;
}
private void recoverStatement() {
error(STATEMENT_RECOVERY);
var recoveryStatementSet = enumUnion(breakStatement, firstStatement);
recoveryStatementSet.remove(ident);
recoveryStatementSet.remove(lbrace);
do {
scan();
} while (!recoveryStatementSet.contains(sym));
errorDist = 0;
}
// ==================================== // ====================================
// ==================================== // ====================================
} }

15
MicroJava Tests/MicroJava Tests2.iml
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@@ -1,15 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<module type="JAVA_MODULE" version="4">
<component name="NewModuleRootManager" inherit-compiler-output="true">
<exclude-output />
<content url="file://$MODULE_DIR$">
<sourceFolder url="file://$MODULE_DIR$/tests" isTestSource="true" />
</content>
<orderEntry type="inheritedJdk" />
<orderEntry type="sourceFolder" forTests="false" />
<orderEntry type="library" name="lib2" level="project" />
<orderEntry type="library" name="lib" level="project" />
<orderEntry type="module" module-name="MicroJava Compiler" />
<orderEntry type="module" module-name="MicroJava Compiler2" />
</component>
</module>