christoph/lecture-compilers
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implement grammaranalyzer

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ChUrl
2020-12-04 01:21:21 +01:00
parent 11a1591b9b
commit 2c4b95c438
6 changed files with 473 additions and 165 deletions
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87
src/test/java/parser/LL1ParserTest.java
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@ -6,8 +6,9 @@ import org.junit.jupiter.api.Test;
import java.util.AbstractMap.SimpleEntry;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
@ -29,25 +30,25 @@ class LL1ParserTest {
S -> i E t S
E -> b
*/
List<String> nonterminals;
Set<String> nonterminals;
String[] narray = {"S", "E"};
nonterminals = Arrays.asList(narray);
nonterminals = new HashSet<>(Arrays.asList(narray));
List<String> terminals;
Set<String> terminals;
String[] tarray = {"a", "b", "e", "i", "t"};
terminals = Arrays.asList(tarray);
terminals = new HashSet<>(Arrays.asList(tarray));
String startSymbol = "S";
String epsilonSymbol = "epsilon";
Map<Map.Entry<String, String>, List<String>> map;
Map<Map.Entry<String, String>, String> map;
map = new HashMap<>();
String[] production0 = {"a"};
map.put(new SimpleEntry<>("S", "a"), Arrays.asList(production0));
String[] production1 = {"i", "E", "t", "S"};
map.put(new SimpleEntry<>("S", "i"), Arrays.asList(production1));
String[] production2 = {"b"};
map.put(new SimpleEntry<>("E", "b"), Arrays.asList(production2));
String production0 = "a";
map.put(new SimpleEntry<>("S", "a"), production0);
String production1 = "i E t S";
map.put(new SimpleEntry<>("S", "i"), production1);
String production2 = "b";
map.put(new SimpleEntry<>("E", "b"), production2);
return new LL1ParsingTable(nonterminals, terminals, startSymbol, epsilonSymbol, map);
}
@ -56,45 +57,45 @@ class LL1ParserTest {
/*
Folie 4b/32
*/
List<String> nonterminals;
Set<String> nonterminals;
String[] narray = {"E", "T", "E2", "T2", "F"};
nonterminals = Arrays.asList(narray);
nonterminals = new HashSet<>(Arrays.asList(narray));
List<String> terminals;
Set<String> terminals;
String[] tarray = {"id", "+", "*", "(", ")"};
terminals = Arrays.asList(tarray);
terminals = new HashSet<>(Arrays.asList(tarray));
String startSymbol = "E";
String epsilonSymbol = "epsilon";
Map<Map.Entry<String, String>, List<String>> map;
Map<Map.Entry<String, String>, String> map;
map = new HashMap<>();
String[] production0 = {"T", "E2"};
map.put(new SimpleEntry<>("E", "id"), Arrays.asList(production0));
String[] production1 = {"T", "E2"};
map.put(new SimpleEntry<>("E", "("), Arrays.asList(production1));
String[] production2 = {"+", "T", "E2"};
map.put(new SimpleEntry<>("E2", "+"), Arrays.asList(production2));
String[] production3 = {"epsilon"};
map.put(new SimpleEntry<>("E2", ")"), Arrays.asList(production3));
String[] production4 = {"epsilon"};
map.put(new SimpleEntry<>("E2", "$"), Arrays.asList(production4));
String[] production5 = {"F", "T2"};
map.put(new SimpleEntry<>("T", "id"), Arrays.asList(production5));
String[] production6 = {"F", "T2"};
map.put(new SimpleEntry<>("T", "("), Arrays.asList(production6));
String[] production7 = {"epsilon"};
map.put(new SimpleEntry<>("T2", "+"), Arrays.asList(production7));
String[] production8 = {"*", "F", "T2"};
map.put(new SimpleEntry<>("T2", "*"), Arrays.asList(production8));
String[] production9 = {"epsilon"};
map.put(new SimpleEntry<>("T2", ")"), Arrays.asList(production9));
String[] production10 = {"epsilon"};
map.put(new SimpleEntry<>("T2", "$"), Arrays.asList(production10));
String[] production11 = {"id"};
map.put(new SimpleEntry<>("F", "id"), Arrays.asList(production11));
String[] production12 = {"(", "E", ")"};
map.put(new SimpleEntry<>("F", "("), Arrays.asList(production12));
String production0 = "T E2";
map.put(new SimpleEntry<>("E", "id"), production0);
String production1 = "T E2";
map.put(new SimpleEntry<>("E", "("), production1);
String production2 = "+ T E2";
map.put(new SimpleEntry<>("E2", "+"), production2);
String production3 = "epsilon";
map.put(new SimpleEntry<>("E2", ")"), production3);
String production4 = "epsilon";
map.put(new SimpleEntry<>("E2", "$"), production4);
String production5 = "F T2";
map.put(new SimpleEntry<>("T", "id"), production5);
String production6 = "F T2";
map.put(new SimpleEntry<>("T", "("), production6);
String production7 = "epsilon";
map.put(new SimpleEntry<>("T2", "+"), production7);
String production8 = "* F T2";
map.put(new SimpleEntry<>("T2", "*"), production8);
String production9 = "epsilon";
map.put(new SimpleEntry<>("T2", ")"), production9);
String production10 = "epsilon";
map.put(new SimpleEntry<>("T2", "$"), production10);
String production11 = "id";
map.put(new SimpleEntry<>("F", "id"), production11);
String production12 = "( E )";
map.put(new SimpleEntry<>("F", "("), production12);
return new LL1ParsingTable(nonterminals, terminals, startSymbol, epsilonSymbol, map);
}