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Diffstat (limited to 'RGens/src/main/java/bjc/rgens/parser/RGrammarSet.java')
-rw-r--r--RGens/src/main/java/bjc/rgens/parser/RGrammarSet.java290
1 files changed, 0 insertions, 290 deletions
diff --git a/RGens/src/main/java/bjc/rgens/parser/RGrammarSet.java b/RGens/src/main/java/bjc/rgens/parser/RGrammarSet.java
deleted file mode 100644
index 975510a..0000000
--- a/RGens/src/main/java/bjc/rgens/parser/RGrammarSet.java
+++ /dev/null
@@ -1,290 +0,0 @@
-package bjc.rgens.parser;
-
-import java.io.BufferedReader;
-import java.io.IOException;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.nio.file.Paths;
-import java.util.HashMap;
-import java.util.Map;
-import java.util.Scanner;
-import java.util.Set;
-
-/**
- * Represents a set of grammars that can share rules via exports.
- *
- * @author EVE
- */
-public class RGrammarSet {
- /* Contains all the grammars in this set. */
- private Map<String, RGrammar> grammars;
-
- /* Contains all the exported rules from grammars. */
- private Map<String, RGrammar> exportedRules;
-
- /* Contains which export came from which grammar. */
- private Map<String, String> exportFrom;
-
- /* Contains which file a grammar was loaded from. */
- private Map<String, String> loadedFrom;
-
- /** Create a new set of randomized grammars. */
- public RGrammarSet() {
- grammars = new HashMap<>();
-
- exportedRules = new HashMap<>();
-
- exportFrom = new HashMap<>();
- loadedFrom = new HashMap<>();
- }
-
- /**
- * Add a grammar to this grammar set.
- *
- * @param grammarName
- * The name of the grammar to add.
- *
- * @param gram
- * The grammar to add.
- *
- * @throws IllegalArgumentException
- * If the grammar name is invalid.
- */
- public void addGrammar(String grammarName, RGrammar gram) {
- /* Make sure a grammar is valid. */
- if (grammarName == null) {
- throw new NullPointerException("Grammar name must not be null");
- } else if (gram == null) {
- throw new NullPointerException("Grammar must not be null");
- } else if (grammarName.equals("")) {
- throw new IllegalArgumentException("The empty string is not a valid grammar name");
- }
-
- grammars.put(grammarName, gram);
-
- /* Process exports from the grammar. */
- for (Rule export : gram.getExportedRules()) {
- exportedRules.put(export.name, gram);
-
- exportFrom.put(export.name, grammarName);
- }
-
- /* Add exports to grammar. */
- gram.setImportedRules(exportedRules);
- }
-
- /**
- * Get a grammar from this grammar set.
- *
- * @param grammarName
- * The name of the grammar to get.
- *
- * @return
- * The grammar with that name.
- *
- * @throws IllegalArgumentException
- * If the grammar name is invalid or not present in this set.
- */
- public RGrammar getGrammar(String grammarName) {
- /* Check arguments. */
- if (grammarName == null) {
- throw new NullPointerException("Grammar name must not be null");
- } else if (grammarName.equals("")) {
- throw new IllegalArgumentException("The empty string is not a valid grammar name");
- } else if (!grammars.containsKey(grammarName)) {
- String msg = String.format("No grammar with name '%s' found", grammarName);
-
- throw new IllegalArgumentException(msg);
- }
-
- return grammars.get(grammarName);
- }
-
- /**
- * Get the grammar a rule was exported from.
- *
- * @param exportName
- * The name of the exported rule.
- *
- * @return
- * The grammar the exported rule came from.
- *
- * @throws IllegalArgumentException
- * If the export name is invalid or not present in this set.
- */
- public RGrammar getExportSource(String exportName) {
- /* Check arguments. */
- if (exportName == null) {
- throw new NullPointerException("Export name must not be null");
- } else if (exportName.equals("")) {
- throw new IllegalArgumentException("The empty string is not a valid rule name");
- } else if (!exportedRules.containsKey(exportName)) {
- String msg = String.format("No export with name '%s' defined", exportName);
- throw new IllegalArgumentException(msg);
- }
-
- return exportedRules.get(exportName);
- }
-
- /**
- * Get the source of an exported rule.
- *
- * This will often be a grammar name, but is not required to be one.
- *
- * @param exportName
- * The name of the exported rule.
- *
- * @return
- * The source of an exported rule.
- *
- * @throws IllegalArgumentException
- * If the exported rule is invalid or not present in this set.
- */
- public String exportedFrom(String exportName) {
- /* Check arguments. */
- if (exportName == null) {
- throw new NullPointerException("Export name must not be null");
- } else if (exportName.equals("")) {
- throw new IllegalArgumentException("The empty string is not a valid rule name");
- } else if (!exportedRules.containsKey(exportName)) {
- String msg = String.format("No export with name '%s' defined", exportName);
-
- throw new IllegalArgumentException(msg);
- }
-
- return exportFrom.getOrDefault(exportName, "Unknown");
- }
-
- /**
- * Get the source of an grammar
- *
- * This will often be a file name, but is not required to be one.
- *
- * @param grammarName
- * The name of the exported grammar.
- *
- * @return
- * The source of an exported grammar.
- *
- * @throws IllegalArgumentException
- * If the exported grammar is invalid or not present in this set.
- */
- public String loadedFrom(String grammarName) {
- /* Check arguments. */
- if (grammarName == null) {
- throw new NullPointerException("Grammar name must not be null");
- } else if (grammarName.equals("")) {
- throw new IllegalArgumentException("The empty string is not a valid grammar name");
- } else if (grammarName.equals("unknown")) {
- return grammarName;
- } else if (!grammars.containsKey(grammarName)) {
- String msg = String.format("No grammar with name '%s' defined", grammarName);
- throw new IllegalArgumentException(msg);
- }
-
- return loadedFrom.getOrDefault(grammarName, "Unknown");
- }
-
- /**
- * Get the names of all the grammars in this set.
- *
- * @return
- * The names of all the grammars in this set.
- */
- public Set<String> getGrammars() {
- return grammars.keySet();
- }
-
- /**
- * Get the names of all the exported rules in this set.
- *
- * @return
- * The names of all the exported rules in this set.
- */
- public Set<String> getExportedRules() {
- return exportedRules.keySet();
- }
-
- /**
- * Load a grammar set from a configuration file.
- *
- * @param cfgFile
- * The configuration file to load from.
- *
- * @return
- * The grammar set created by the configuration file.
- *
- * @throws IOException
- * If something goes wrong during configuration loading.
- */
- public static RGrammarSet fromConfigFile(Path cfgFile) throws IOException {
- /* The grammar set to hand back. */
- RGrammarSet set = new RGrammarSet();
-
- /* Get the directory that contains the config file. */
- Path cfgParent = cfgFile.getParent();
-
- try(Scanner scn = new Scanner(cfgFile)) {
- /* Execute lines from the configuration file. */
- while (scn.hasNextLine()) {
- String ln = scn.nextLine().trim();
-
- /* Ignore blank/comment lines. */
- if (ln.equals("")) continue;
-
- if (ln.startsWith("#")) continue;
-
- /* Handle mixed whitespace. */
- ln = ln.replaceAll("\\s+", " ");
-
- /*
- * Get the place where the name of the grammar
- * ends.
- */
- int nameIdx = ln.indexOf(" ");
- if (nameIdx == -1) {
- throw new GrammarException("Must specify a name for a loaded grammar");
- }
-
- /* Name and path of grammar. */
- String name = ln.substring(0, nameIdx);
- Path path = Paths.get(ln.substring(nameIdx).trim());
-
- /*
- * Convert from configuration relative path to
- * absolute path.
- */
- Path convPath = cfgParent.resolve(path.toString());
-
- //if(Files.isDirectory(convPath)) {
- // /* @TODO implement subset grammars */
- // throw new GrammarException("Sub-grammar sets aren't implemented yet");
- //} else if (convPath.getFileName().endsWith(".gram")) {
- /* Load grammar file. */
- try {
- BufferedReader fis = Files.newBufferedReader(convPath);
- RGrammar gram = RGrammarParser.readGrammar(fis);
- fis.close();
-
- /* Add grammar to the set. */
- set.addGrammar(name, gram);
-
- /*
- * Mark where the grammar came
- * from.
- */
- set.loadedFrom.put(name, path.toString());
- } catch (GrammarException gex) {
- String msg = String.format("Error loading file '%s'", path);
- throw new GrammarException(msg, gex);
- }
- //} else {
- // String msg = String.format("Unrecognized file type '%s'", convPath.getFileName());
- // throw new GrammarException(msg);
- //}
- }
- }
-
- return set;
- }
-}
generated by cgit v1.2.3 (git 2.25.1) at 2026-05-10 08:08:07 +0000