christoph/lecture-compilers
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slight refactor for map

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2021-01-17 17:57:39 +01:00
parent 5a384af948
commit ad37601afc
1 changed files with 15 additions and 23 deletions
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38
src/main/java/parser/ast/ASTBalancer.java
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@ -1,7 +1,6 @@
package parser.ast;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import static util.Logger.log;
@ -10,6 +9,7 @@ public final class ASTBalancer {
private static final Map<String, Integer> priority;
//!: Operatorpräzedenz
// 0 - Unary: -, +, !
// 1 - Multiplicative: *, /, %
// 2 - Additive: +, -
@ -18,28 +18,20 @@ public final class ASTBalancer {
// 5 - Logical AND: &&
// 6 - Logical OR: ||
static {
priority = new HashMap<>();
priority.put("NOT", 0);
priority.put("MUL", 1);
priority.put("DIV", 1);
priority.put("MOD", 1);
priority.put("ADD", 2);
priority.put("SUB", 2);
priority.put("LESS", 3);
priority.put("LESS_EQUAL", 3);
priority.put("GREATER", 3);
priority.put("GREATER_EQUAL", 3);
priority.put("EQUAL", 4);
priority.put("NOT_EQUAL", 4);
priority.put("AND", 5);
priority.put("OR", 6);
priority = Map.ofEntries(Map.entry("NOT", 0),
Map.entry("MUL", 1),
Map.entry("DIV", 1),
Map.entry("MOD", 1),
Map.entry("ADD", 2),
Map.entry("SUB", 2),
Map.entry("LESS", 3),
Map.entry("LESS_EQUAL", 3),
Map.entry("GREATER", 3),
Map.entry("GREATER_EQUAL", 3),
Map.entry("EQUAL", 4),
Map.entry("NOT_EQUAL", 4),
Map.entry("AND", 5),
Map.entry("OR", 6));
}
private ASTBalancer() {}