christoph/lecture-compilers
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ll1parser new facctory method

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Christoph
2020-12-04 14:30:08 +01:00
parent 86ba647784
commit 1652d17528
1 changed files with 6 additions and 0 deletions
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6
src/main/java/parser/LL1Parser.java
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@ -5,6 +5,8 @@ import parser.grammar.LL1GrammarAnalyzer;
import util.ast.AST; import util.ast.AST;
import util.ast.Node; import util.ast.Node;
import java.io.IOException;
import java.nio.file.Path;
import java.util.ArrayDeque; import java.util.ArrayDeque;
import java.util.Deque; import java.util.Deque;
import java.util.List; import java.util.List;
@ -17,6 +19,10 @@ public class LL1Parser {
this.parsetable = parsetable; this.parsetable = parsetable;
} }
public static LL1Parser fromGrammar(Path path) throws IOException {
return LL1Parser.fromGrammar(Grammar.fromFile(path));
}
public static LL1Parser fromGrammar(Grammar grammar) { public static LL1Parser fromGrammar(Grammar grammar) {
LL1GrammarAnalyzer analyzer = new LL1GrammarAnalyzer(grammar); LL1GrammarAnalyzer analyzer = new LL1GrammarAnalyzer(grammar);
return new LL1Parser(analyzer.getTable()); return new LL1Parser(analyzer.getTable());