c-my/CJCompiler
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增加符号表

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c-my committed 2018-12-17 22:37:18 +08:00
1 parent d3a2df1ea8
commit 89a24b497c
14 files changed
+504 -118
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src/com/compiler/parser/ParserGenerator.java
+16 -18
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@@ -13,6 +13,8 @@ public class ParserGenerator {
HashMap<Symbol, HashSet<SymbolString>> productionRules = new HashMap<>();
int index = 0;
for (String line : lines) {
if (line.isEmpty())
continue;
var strs = line.split("->");
if (strs.length < 2)
return new HashMap<>();
@@ -25,23 +27,17 @@ public class ParserGenerator {
var symstrs = right.split("\\|");
for (var str : symstrs) {
SymbolString symbolString = new SymbolString(index++);
var syms = str.split(" ");
for (String sym : syms) {
switch (sym.charAt(0)) {
case 'N':
case 'n':
symbolString.add(new Symbol(sym, Symbol.SymbolType.Nonterminal));
break;
case 'T':
case 't':
symbolString.add(new Symbol(sym, Symbol.SymbolType.Terminal));
break;
case 'E':
case 'e':
if (str.isEmpty())
symbolString.add(new Symbol("|", Symbol.SymbolType.Terminal));
else {
var syms = str.split(" ");
for (String sym : syms) {
if (sym.equals("$"))
symbolString.add(new Symbol(sym, Symbol.SymbolType.Empty));
break;
default:
return new HashMap<>();
else if (ParserTest.isTerminal(sym))
symbolString.add(new Symbol(sym, Symbol.SymbolType.Terminal));
else
symbolString.add(new Symbol(sym, Symbol.SymbolType.Nonterminal));
}
}
symbolStrings.add(symbolString);
@@ -56,10 +52,12 @@ public class ParserGenerator {
for (Token token : tokenList) {
switch (token.getType()) {
case STR:
symbolList.add(new Symbol("STRING_LITERAL", Symbol.SymbolType.Terminal, token.getStr(), token.getType()));
symbolList.add(new Symbol("STRING_LITERAL", Symbol.SymbolType.Terminal,
token.getStr(), token.getType()));
break;
case IDENTIFIER:
symbolList.add(new Symbol("IDENTIFIER", Symbol.SymbolType.Terminal));
symbolList.add(new Symbol("IDENTIFIER", Symbol.SymbolType.Terminal,
token.getStr(), token.getType()));
break;
case DELIMITER:
switch (token.getStr()) {