jasder
/
antlr
1
0
Fork 1
Code Issues Pull Requests Releases 1 Wiki Activity

reorg r : '...' ; matching. deals with -> cmds better (and more of em)

This commit is contained in:
Terence Parr 2012-07-12 13:25:18 -07:00
parent de744f912a
commit 4923cb3874
1 changed files with 37 additions and 41 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

78
tool/src/org/antlr/v4/tool/Grammar.java
View File

@ -742,6 +742,17 @@ public class Grammar implements AttributeResolver {
}
public static Map<String,String> getStringLiteralAliasesFromLexerRules(GrammarRootAST ast) {
String[] patterns = {
"(RULE %name:TOKEN_REF (BLOCK (ALT %lit:STRING_LITERAL)))",
"(RULE %name:TOKEN_REF (BLOCK (ALT %lit:STRING_LITERAL ACTION)))",
"(RULE %name:TOKEN_REF (BLOCK (ALT %lit:STRING_LITERAL SEMPRED)))",
"(RULE %name:TOKEN_REF (BLOCK (LEXER_ALT_ACTION (ALT %lit:STRING_LITERAL) .)))",
"(RULE %name:TOKEN_REF (BLOCK (LEXER_ALT_ACTION (ALT %lit:STRING_LITERAL) . .)))",
"(RULE %name:TOKEN_REF (BLOCK (LEXER_ALT_ACTION (ALT %lit:STRING_LITERAL) (LEXER_ACTION_CALL . .))))",
"(RULE %name:TOKEN_REF (BLOCK (LEXER_ALT_ACTION (ALT %lit:STRING_LITERAL) . (LEXER_ACTION_CALL . .))))",
"(RULE %name:TOKEN_REF (BLOCK (LEXER_ALT_ACTION (ALT %lit:STRING_LITERAL) (LEXER_ACTION_CALL . .) .)))",
// TODO: allow doc comment in there
};
GrammarASTAdaptor adaptor = new GrammarASTAdaptor(ast.token.getInputStream());
TreeWizard wiz = new TreeWizard(adaptor,ANTLRParser.tokenNames);
Map<String,String> lexerRuleToStringLiteral = new HashMap<String,String>();
@ -749,53 +760,38 @@ public class Grammar implements AttributeResolver {
List<GrammarAST> ruleNodes = ast.getNodesWithType(ANTLRParser.RULE);
if ( ruleNodes==null || ruleNodes.size()==0 ) return null;
for (GrammarAST r : ruleNodes) {
for (GrammarAST r : ruleNodes) {
//tool.log("grammar", r.toStringTree());
System.out.println("chk: "+r.toStringTree());
Tree name = r.getChild(0);
if ( name.getType()==ANTLRParser.TOKEN_REF ) {
Map nodes = new HashMap();
boolean isLitRule =
wiz.parse(r, "(RULE %name:TOKEN_REF (BLOCK (ALT %lit:STRING_LITERAL)))", nodes);
if ( isLitRule ) {
GrammarAST litNode = (GrammarAST)nodes.get("lit");
GrammarAST nameNode = (GrammarAST)nodes.get("name");
lexerRuleToStringLiteral.put(litNode.getText(), nameNode.getText());
continue;
if ( name.getType()==ANTLRParser.TOKEN_REF ) {
// check rule against patterns
boolean isLitRule = false;
for (String pattern : patterns) {
isLitRule =
defAlias(r, pattern, wiz, lexerRuleToStringLiteral);
if ( isLitRule ) break;
}
// TODO: allow doc comment in there
nodes = new HashMap();
// try with action in there
isLitRule =
wiz.parse(r, "(RULE %name:TOKEN_REF (BLOCK (ALT %lit:STRING_LITERAL ACTION)))", nodes);
if ( isLitRule ) {
GrammarAST litNode = (GrammarAST)nodes.get("lit");
GrammarAST nameNode = (GrammarAST)nodes.get("name");
lexerRuleToStringLiteral.put(litNode.getText(), nameNode.getText());
continue;
}
nodes = new HashMap();
// try with pred in there
isLitRule =
wiz.parse(r, "(RULE %name:TOKEN_REF (BLOCK (ALT %lit:STRING_LITERAL SEMPRED)))", nodes);
if ( isLitRule ) {
GrammarAST litNode = (GrammarAST)nodes.get("lit");
GrammarAST nameNode = (GrammarAST)nodes.get("name");
lexerRuleToStringLiteral.put(litNode.getText(), nameNode.getText());
}
nodes = new HashMap();
// try with -> lexercommand in there
isLitRule =
wiz.parse(r, "(RULE %name:TOKEN_REF (BLOCK (LEXER_ALT_ACTION (ALT %lit:STRING_LITERAL) ID)))", nodes);
if ( isLitRule ) {
GrammarAST litNode = (GrammarAST)nodes.get("lit");
GrammarAST nameNode = (GrammarAST)nodes.get("name");
lexerRuleToStringLiteral.put(litNode.getText(), nameNode.getText());
}
}
}
if ( !isLitRule ) System.out.println("no pattern matched");
}
}
return lexerRuleToStringLiteral;
}
protected static boolean defAlias(GrammarAST r, String pattern,
TreeWizard wiz,
Map<String, String> lexerRuleToStringLiteral)
{
HashMap nodes = new HashMap();
if ( wiz.parse(r, pattern, nodes) ) {
GrammarAST litNode = (GrammarAST)nodes.get("lit");
GrammarAST nameNode = (GrammarAST)nodes.get("name");
lexerRuleToStringLiteral.put(litNode.getText(), nameNode.getText());
return true;
}
return false;
}
public Set<String> getStringLiterals() {
final Set<String> strings = new HashSet<String>();
GrammarTreeVisitor collector = new GrammarTreeVisitor() {