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SysyCompiler_Arm
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Simplify the grammar

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main
Su Xing 3 years ago
parent c0668ff437
commit 2c0ef95d97
10 changed files with 23 additions and 555 deletions
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28
src/.antlr/SysY.interp
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@ -1,28 +0,0 @@
token literal names:
null
','
null
null
null
null
null
null
token symbolic names:
null
Comma
IntLiteral
FloatLiteral
STRING
WS
LINE_COMMENT
COMMENT
rule names:
funcRParams
funcRParam
number
atn:
[3, 24715, 42794, 33075, 47597, 16764, 15335, 30598, 22884, 3, 9, 23, 4, 2, 9, 2, 4, 3, 9, 3, 4, 4, 9, 4, 3, 2, 3, 2, 3, 2, 7, 2, 12, 10, 2, 12, 2, 14, 2, 15, 11, 2, 3, 3, 3, 3, 5, 3, 19, 10, 3, 3, 4, 3, 4, 3, 4, 2, 2, 5, 2, 4, 6, 2, 3, 3, 2, 4, 5, 2, 21, 2, 8, 3, 2, 2, 2, 4, 18, 3, 2, 2, 2, 6, 20, 3, 2, 2, 2, 8, 13, 5, 4, 3, 2, 9, 10, 7, 3, 2, 2, 10, 12, 5, 4, 3, 2, 11, 9, 3, 2, 2, 2, 12, 15, 3, 2, 2, 2, 13, 11, 3, 2, 2, 2, 13, 14, 3, 2, 2, 2, 14, 3, 3, 2, 2, 2, 15, 13, 3, 2, 2, 2, 16, 19, 5, 6, 4, 2, 17, 19, 7, 6, 2, 2, 18, 16, 3, 2, 2, 2, 18, 17, 3, 2, 2, 2, 19, 5, 3, 2, 2, 2, 20, 21, 9, 2, 2, 2, 21, 7, 3, 2, 2, 2, 4, 13, 18]

8
src/.antlr/SysY.tokens
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Comma=1
IntLiteral=2
FloatLiteral=3
STRING=4
WS=5
LINE_COMMENT=6
COMMENT=7
','=1

42
src/.antlr/SysYLexer.interp
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165
src/.antlr/SysYLexer.java
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// Generated from /home/xsu/workspace/sysy/sysy/src/SysY.g4 by ANTLR 4.9.2
import org.antlr.v4.runtime.Lexer;
import org.antlr.v4.runtime.CharStream;
import org.antlr.v4.runtime.Token;
import org.antlr.v4.runtime.TokenStream;
import org.antlr.v4.runtime.*;
import org.antlr.v4.runtime.atn.*;
import org.antlr.v4.runtime.dfa.DFA;
import org.antlr.v4.runtime.misc.*;
@SuppressWarnings({"all", "warnings", "unchecked", "unused", "cast"})
public class SysYLexer extends Lexer {
static { RuntimeMetaData.checkVersion("4.9.2", RuntimeMetaData.VERSION); }
protected static final DFA[] _decisionToDFA;
protected static final PredictionContextCache _sharedContextCache =
new PredictionContextCache();
public static final int
Comma=1, IntLiteral=2, FloatLiteral=3, STRING=4, WS=5, LINE_COMMENT=6,
COMMENT=7;
public static String[] channelNames = {
"DEFAULT_TOKEN_CHANNEL", "HIDDEN"
};
public static String[] modeNames = {
"DEFAULT_MODE"
};
private static String[] makeRuleNames() {
return new String[] {
"Comma", "IntLiteral", "HexadecimalDigits", "ExponentPart", "FractionPart",
"FloatLiteral", "STRING", "ESC", "WS", "LINE_COMMENT", "COMMENT"
};
}
public static final String[] ruleNames = makeRuleNames();
private static String[] makeLiteralNames() {
return new String[] {
null, "','"
};
}
private static final String[] _LITERAL_NAMES = makeLiteralNames();
private static String[] makeSymbolicNames() {
return new String[] {
null, "Comma", "IntLiteral", "FloatLiteral", "STRING", "WS", "LINE_COMMENT",
"COMMENT"
};
}
private static final String[] _SYMBOLIC_NAMES = makeSymbolicNames();
public static final Vocabulary VOCABULARY = new VocabularyImpl(_LITERAL_NAMES, _SYMBOLIC_NAMES);
/**
* @deprecated Use {@link #VOCABULARY} instead.
*/
@Deprecated
public static final String[] tokenNames;
static {
tokenNames = new String[_SYMBOLIC_NAMES.length];
for (int i = 0; i < tokenNames.length; i++) {
tokenNames[i] = VOCABULARY.getLiteralName(i);
if (tokenNames[i] == null) {
tokenNames[i] = VOCABULARY.getSymbolicName(i);
}
if (tokenNames[i] == null) {
tokenNames[i] = "<INVALID>";
}
}
}
@Override
@Deprecated
public String[] getTokenNames() {
return tokenNames;
}
@Override
public Vocabulary getVocabulary() {
return VOCABULARY;
}
public SysYLexer(CharStream input) {
super(input);
_interp = new LexerATNSimulator(this,_ATN,_decisionToDFA,_sharedContextCache);
}
@Override
public String getGrammarFileName() { return "SysY.g4"; }
@Override
public String[] getRuleNames() { return ruleNames; }
@Override
public String getSerializedATN() { return _serializedATN; }
@Override
public String[] getChannelNames() { return channelNames; }
@Override
public String[] getModeNames() { return modeNames; }
@Override
public ATN getATN() { return _ATN; }
public static final String _serializedATN =
"\3\u608b\ua72a\u8133\ub9ed\u417c\u3be7\u7786\u5964\2\t\u00a5\b\1\4\2\t"+
"\2\4\3\t\3\4\4\t\4\4\5\t\5\4\6\t\6\4\7\t\7\4\b\t\b\4\t\t\t\4\n\t\n\4\13"+
"\t\13\4\f\t\f\3\2\3\2\3\3\6\3\35\n\3\r\3\16\3\36\3\3\3\3\3\3\3\3\6\3%"+
"\n\3\r\3\16\3&\3\3\3\3\3\3\3\3\6\3-\n\3\r\3\16\3.\5\3\61\n\3\3\4\3\4\3"+
"\4\3\4\6\4\67\n\4\r\4\16\48\3\4\3\4\3\4\3\4\6\4?\n\4\r\4\16\4@\5\4C\n"+
"\4\3\5\3\5\3\5\6\5H\n\5\r\5\16\5I\3\6\7\6M\n\6\f\6\16\6P\13\6\3\6\3\6"+
"\6\6T\n\6\r\6\16\6U\3\6\6\6Y\n\6\r\6\16\6Z\3\6\5\6^\n\6\3\7\3\7\5\7b\n"+
"\7\3\7\6\7e\n\7\r\7\16\7f\3\7\3\7\5\7k\n\7\3\7\3\7\3\7\3\7\3\7\5\7r\n"+
"\7\3\b\3\b\3\b\7\bw\n\b\f\b\16\bz\13\b\3\b\3\b\3\t\3\t\3\t\3\t\5\t\u0082"+
"\n\t\3\n\3\n\3\n\3\n\3\13\3\13\3\13\3\13\7\13\u008c\n\13\f\13\16\13\u008f"+
"\13\13\3\13\5\13\u0092\n\13\3\13\3\13\3\13\3\13\3\f\3\f\3\f\3\f\7\f\u009c"+
"\n\f\f\f\16\f\u009f\13\f\3\f\3\f\3\f\3\f\3\f\5x\u008d\u009d\2\r\3\3\5"+
"\4\7\2\t\2\13\2\r\5\17\6\21\2\23\7\25\b\27\t\3\2\7\3\2\62;\5\2\62;CHc"+
"h\4\2GGgg\4\2--//\5\2\13\f\17\17\"\"\2\u00b9\2\3\3\2\2\2\2\5\3\2\2\2\2"+
"\r\3\2\2\2\2\17\3\2\2\2\2\23\3\2\2\2\2\25\3\2\2\2\2\27\3\2\2\2\3\31\3"+
"\2\2\2\5\60\3\2\2\2\7B\3\2\2\2\tD\3\2\2\2\13]\3\2\2\2\rq\3\2\2\2\17s\3"+
"\2\2\2\21\u0081\3\2\2\2\23\u0083\3\2\2\2\25\u0087\3\2\2\2\27\u0097\3\2"+
"\2\2\31\32\7.\2\2\32\4\3\2\2\2\33\35\t\2\2\2\34\33\3\2\2\2\35\36\3\2\2"+
"\2\36\34\3\2\2\2\36\37\3\2\2\2\37\61\3\2\2\2 !\7\62\2\2!\"\7z\2\2\"$\3"+
"\2\2\2#%\t\3\2\2$#\3\2\2\2%&\3\2\2\2&$\3\2\2\2&\'\3\2\2\2\'\61\3\2\2\2"+
"()\7\62\2\2)*\7Z\2\2*,\3\2\2\2+-\t\3\2\2,+\3\2\2\2-.\3\2\2\2.,\3\2\2\2"+
"./\3\2\2\2/\61\3\2\2\2\60\34\3\2\2\2\60 \3\2\2\2\60(\3\2\2\2\61\6\3\2"+
"\2\2\62\63\7\62\2\2\63\64\7z\2\2\64\66\3\2\2\2\65\67\t\3\2\2\66\65\3\2"+
"\2\2\678\3\2\2\28\66\3\2\2\289\3\2\2\29C\3\2\2\2:;\7\62\2\2;<\7Z\2\2<"+
">\3\2\2\2=?\t\3\2\2>=\3\2\2\2?@\3\2\2\2@>\3\2\2\2@A\3\2\2\2AC\3\2\2\2"+
"B\62\3\2\2\2B:\3\2\2\2C\b\3\2\2\2DE\t\4\2\2EG\t\5\2\2FH\t\2\2\2GF\3\2"+
"\2\2HI\3\2\2\2IG\3\2\2\2IJ\3\2\2\2J\n\3\2\2\2KM\t\2\2\2LK\3\2\2\2MP\3"+
"\2\2\2NL\3\2\2\2NO\3\2\2\2OQ\3\2\2\2PN\3\2\2\2QS\7\60\2\2RT\t\2\2\2SR"+
"\3\2\2\2TU\3\2\2\2US\3\2\2\2UV\3\2\2\2V^\3\2\2\2WY\t\2\2\2XW\3\2\2\2Y"+
"Z\3\2\2\2ZX\3\2\2\2Z[\3\2\2\2[\\\3\2\2\2\\^\7\60\2\2]N\3\2\2\2]X\3\2\2"+
"\2^\f\3\2\2\2_a\5\13\6\2`b\5\t\5\2a`\3\2\2\2ab\3\2\2\2br\3\2\2\2ce\t\2"+
"\2\2dc\3\2\2\2ef\3\2\2\2fd\3\2\2\2fg\3\2\2\2gh\3\2\2\2hr\5\t\5\2ik\5\7"+
"\4\2ji\3\2\2\2jk\3\2\2\2kl\3\2\2\2lm\7\60\2\2mr\5\7\4\2no\5\7\4\2op\7"+
"\60\2\2pr\3\2\2\2q_\3\2\2\2qd\3\2\2\2qj\3\2\2\2qn\3\2\2\2r\16\3\2\2\2"+
"sx\7$\2\2tw\5\21\t\2uw\13\2\2\2vt\3\2\2\2vu\3\2\2\2wz\3\2\2\2xy\3\2\2"+
"\2xv\3\2\2\2y{\3\2\2\2zx\3\2\2\2{|\7$\2\2|\20\3\2\2\2}~\7^\2\2~\u0082"+
"\7$\2\2\177\u0080\7^\2\2\u0080\u0082\7^\2\2\u0081}\3\2\2\2\u0081\177\3"+
"\2\2\2\u0082\22\3\2\2\2\u0083\u0084\t\6\2\2\u0084\u0085\3\2\2\2\u0085"+
"\u0086\b\n\2\2\u0086\24\3\2\2\2\u0087\u0088\7\61\2\2\u0088\u0089\7\61"+
"\2\2\u0089\u008d\3\2\2\2\u008a\u008c\13\2\2\2\u008b\u008a\3\2\2\2\u008c"+
"\u008f\3\2\2\2\u008d\u008e\3\2\2\2\u008d\u008b\3\2\2\2\u008e\u0091\3\2"+
"\2\2\u008f\u008d\3\2\2\2\u0090\u0092\7\17\2\2\u0091\u0090\3\2\2\2\u0091"+
"\u0092\3\2\2\2\u0092\u0093\3\2\2\2\u0093\u0094\7\f\2\2\u0094\u0095\3\2"+
"\2\2\u0095\u0096\b\13\2\2\u0096\26\3\2\2\2\u0097\u0098\7\61\2\2\u0098"+
"\u0099\7,\2\2\u0099\u009d\3\2\2\2\u009a\u009c\13\2\2\2\u009b\u009a\3\2"+
"\2\2\u009c\u009f\3\2\2\2\u009d\u009e\3\2\2\2\u009d\u009b\3\2\2\2\u009e"+
"\u00a0\3\2\2\2\u009f\u009d\3\2\2\2\u00a0\u00a1\7,\2\2\u00a1\u00a2\7\61"+
"\2\2\u00a2\u00a3\3\2\2\2\u00a3\u00a4\b\f\2\2\u00a4\30\3\2\2\2\31\2\36"+
"&.\608@BINUZ]afjqvx\u0081\u008d\u0091\u009d\3\b\2\2";
public static final ATN _ATN =
new ATNDeserializer().deserialize(_serializedATN.toCharArray());
static {
_decisionToDFA = new DFA[_ATN.getNumberOfDecisions()];
for (int i = 0; i < _ATN.getNumberOfDecisions(); i++) {
_decisionToDFA[i] = new DFA(_ATN.getDecisionState(i), i);
}
}
}

8
src/.antlr/SysYLexer.tokens
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Comma=1
IntLiteral=2
FloatLiteral=3
STRING=4
WS=5
LINE_COMMENT=6
COMMENT=7
','=1

264
src/.antlr/SysYParser.java
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// Generated from /home/xsu/workspace/sysy/sysy/src/SysY.g4 by ANTLR 4.9.2
import org.antlr.v4.runtime.atn.*;
import org.antlr.v4.runtime.dfa.DFA;
import org.antlr.v4.runtime.*;
import org.antlr.v4.runtime.misc.*;
import org.antlr.v4.runtime.tree.*;
import java.util.List;
import java.util.Iterator;
import java.util.ArrayList;
@SuppressWarnings({"all", "warnings", "unchecked", "unused", "cast"})
public class SysYParser extends Parser {
static { RuntimeMetaData.checkVersion("4.9.2", RuntimeMetaData.VERSION); }
protected static final DFA[] _decisionToDFA;
protected static final PredictionContextCache _sharedContextCache =
new PredictionContextCache();
public static final int
Comma=1, IntLiteral=2, FloatLiteral=3, STRING=4, WS=5, LINE_COMMENT=6,
COMMENT=7;
public static final int
RULE_funcRParams = 0, RULE_funcRParam = 1, RULE_number = 2;
private static String[] makeRuleNames() {
return new String[] {
"funcRParams", "funcRParam", "number"
};
}
public static final String[] ruleNames = makeRuleNames();
private static String[] makeLiteralNames() {
return new String[] {
null, "','"
};
}
private static final String[] _LITERAL_NAMES = makeLiteralNames();
private static String[] makeSymbolicNames() {
return new String[] {
null, "Comma", "IntLiteral", "FloatLiteral", "STRING", "WS", "LINE_COMMENT",
"COMMENT"
};
}
private static final String[] _SYMBOLIC_NAMES = makeSymbolicNames();
public static final Vocabulary VOCABULARY = new VocabularyImpl(_LITERAL_NAMES, _SYMBOLIC_NAMES);
/**
* @deprecated Use {@link #VOCABULARY} instead.
*/
@Deprecated
public static final String[] tokenNames;
static {
tokenNames = new String[_SYMBOLIC_NAMES.length];
for (int i = 0; i < tokenNames.length; i++) {
tokenNames[i] = VOCABULARY.getLiteralName(i);
if (tokenNames[i] == null) {
tokenNames[i] = VOCABULARY.getSymbolicName(i);
}
if (tokenNames[i] == null) {
tokenNames[i] = "<INVALID>";
}
}
}
@Override
@Deprecated
public String[] getTokenNames() {
return tokenNames;
}
@Override
public Vocabulary getVocabulary() {
return VOCABULARY;
}
@Override
public String getGrammarFileName() { return "SysY.g4"; }
@Override
public String[] getRuleNames() { return ruleNames; }
@Override
public String getSerializedATN() { return _serializedATN; }
@Override
public ATN getATN() { return _ATN; }
public SysYParser(TokenStream input) {
super(input);
_interp = new ParserATNSimulator(this,_ATN,_decisionToDFA,_sharedContextCache);
}
public static class FuncRParamsContext extends ParserRuleContext {
public List<FuncRParamContext> funcRParam() {
return getRuleContexts(FuncRParamContext.class);
}
public FuncRParamContext funcRParam(int i) {
return getRuleContext(FuncRParamContext.class,i);
}
public List<TerminalNode> Comma() { return getTokens(SysYParser.Comma); }
public TerminalNode Comma(int i) {
return getToken(SysYParser.Comma, i);
}
public FuncRParamsContext(ParserRuleContext parent, int invokingState) {
super(parent, invokingState);
}
@Override public int getRuleIndex() { return RULE_funcRParams; }
}
public final FuncRParamsContext funcRParams() throws RecognitionException {
FuncRParamsContext _localctx = new FuncRParamsContext(_ctx, getState());
enterRule(_localctx, 0, RULE_funcRParams);
int _la;
try {
enterOuterAlt(_localctx, 1);
{
setState(6);
funcRParam();
setState(11);
_errHandler.sync(this);
_la = _input.LA(1);
while (_la==Comma) {
{
{
setState(7);
match(Comma);
setState(8);
funcRParam();
}
}
setState(13);
_errHandler.sync(this);
_la = _input.LA(1);
}
}
}
catch (RecognitionException re) {
_localctx.exception = re;
_errHandler.reportError(this, re);
_errHandler.recover(this, re);
}
finally {
exitRule();
}
return _localctx;
}
public static class FuncRParamContext extends ParserRuleContext {
public FuncRParamContext(ParserRuleContext parent, int invokingState) {
super(parent, invokingState);
}
@Override public int getRuleIndex() { return RULE_funcRParam; }
public FuncRParamContext() { }
public void copyFrom(FuncRParamContext ctx) {
super.copyFrom(ctx);
}
}
public static class StringAsRParamContext extends FuncRParamContext {
public TerminalNode STRING() { return getToken(SysYParser.STRING, 0); }
public StringAsRParamContext(FuncRParamContext ctx) { copyFrom(ctx); }
}
public static class ExpAsRParamContext extends FuncRParamContext {
public NumberContext number() {
return getRuleContext(NumberContext.class,0);
}
public ExpAsRParamContext(FuncRParamContext ctx) { copyFrom(ctx); }
}
public final FuncRParamContext funcRParam() throws RecognitionException {
FuncRParamContext _localctx = new FuncRParamContext(_ctx, getState());
enterRule(_localctx, 2, RULE_funcRParam);
try {
setState(16);
_errHandler.sync(this);
switch (_input.LA(1)) {
case IntLiteral:
case FloatLiteral:
_localctx = new ExpAsRParamContext(_localctx);
enterOuterAlt(_localctx, 1);
{
setState(14);
number();
}
break;
case STRING:
_localctx = new StringAsRParamContext(_localctx);
enterOuterAlt(_localctx, 2);
{
setState(15);
match(STRING);
}
break;
default:
throw new NoViableAltException(this);
}
}
catch (RecognitionException re) {
_localctx.exception = re;
_errHandler.reportError(this, re);
_errHandler.recover(this, re);
}
finally {
exitRule();
}
return _localctx;
}
public static class NumberContext extends ParserRuleContext {
public TerminalNode IntLiteral() { return getToken(SysYParser.IntLiteral, 0); }
public TerminalNode FloatLiteral() { return getToken(SysYParser.FloatLiteral, 0); }
public NumberContext(ParserRuleContext parent, int invokingState) {
super(parent, invokingState);
}
@Override public int getRuleIndex() { return RULE_number; }
}
public final NumberContext number() throws RecognitionException {
NumberContext _localctx = new NumberContext(_ctx, getState());
enterRule(_localctx, 4, RULE_number);
int _la;
try {
enterOuterAlt(_localctx, 1);
{
setState(18);
_la = _input.LA(1);
if ( !(_la==IntLiteral || _la==FloatLiteral) ) {
_errHandler.recoverInline(this);
}
else {
if ( _input.LA(1)==Token.EOF ) matchedEOF = true;
_errHandler.reportMatch(this);
consume();
}
}
}
catch (RecognitionException re) {
_localctx.exception = re;
_errHandler.reportError(this, re);
_errHandler.recover(this, re);
}
finally {
exitRule();
}
return _localctx;
}
public static final String _serializedATN =
"\3\u608b\ua72a\u8133\ub9ed\u417c\u3be7\u7786\u5964\3\t\27\4\2\t\2\4\3"+
"\t\3\4\4\t\4\3\2\3\2\3\2\7\2\f\n\2\f\2\16\2\17\13\2\3\3\3\3\5\3\23\n\3"+
"\3\4\3\4\3\4\2\2\5\2\4\6\2\3\3\2\4\5\2\25\2\b\3\2\2\2\4\22\3\2\2\2\6\24"+
"\3\2\2\2\b\r\5\4\3\2\t\n\7\3\2\2\n\f\5\4\3\2\13\t\3\2\2\2\f\17\3\2\2\2"+
"\r\13\3\2\2\2\r\16\3\2\2\2\16\3\3\2\2\2\17\r\3\2\2\2\20\23\5\6\4\2\21"+
"\23\7\6\2\2\22\20\3\2\2\2\22\21\3\2\2\2\23\5\3\2\2\2\24\25\t\2\2\2\25"+
"\7\3\2\2\2\4\r\22";
public static final ATN _ATN =
new ATNDeserializer().deserialize(_serializedATN.toCharArray());
static {
_decisionToDFA = new DFA[_ATN.getNumberOfDecisions()];
for (int i = 0; i < _ATN.getNumberOfDecisions(); i++) {
_decisionToDFA[i] = new DFA(_ATN.getDecisionState(i), i);
}
}
}

27
src/ASTPrinter.cpp
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@ -1,40 +1,29 @@
#include <algorithm>
#include <iostream>
#include <vector>
using namespace std;
#include "SysYParser.h"
#include "ASTPrinter.h"
#include "SysYParser.h"
antlrcpp::Any ASTPrinter::visitNumber(SysYParser::NumberContext *ctx) {
if (auto iCtx = ctx->IntLiteral()) {
cout << iCtx->getText();
} else if (auto fCtx = ctx->FloatLiteral()) {
cout << fCtx->getText();
}
cout << ctx->IntConst()->getText();
return nullptr;
}
antlrcpp::Any ASTPrinter::visitStringAsRParam(SysYParser::StringAsRParamContext *ctx) {
cout << ctx->getText();
antlrcpp::Any ASTPrinter::visitString(SysYParser::StringContext *ctx) {
cout << ctx->String()->getText();
return nullptr;
}
// antlrcpp::Any ASTPrinter::visitFuncRParam(SysYParser::FuncRParamContext *ctx) {
// if (auto exp = dynamic_cast<SysYParser::ExpAsRParamContext *>(ctx))
// return visitExpAsRParam(exp);
// else
// return visitStringAsRParam(static_cast<SysYParser::StringAsRParamContext
// *>(ctx));
// }
antlrcpp::Any ASTPrinter::visitFuncRParams(SysYParser::FuncRParamsContext *ctx) {
antlrcpp::Any
ASTPrinter::visitFuncRParams(SysYParser::FuncRParamsContext *ctx) {
if (ctx->funcRParam().empty())
return nullptr;
ctx->funcRParam(0)->accept(this);
auto numParams = ctx->funcRParam().size();
ctx->funcRParam(0)->accept(this);
for (int i = 1; i < numParams; ++i) {
cout << ", ";
ctx->funcRParam(i)->accept(this);
}
cout << '\n';
return nullptr;
}

4
src/ASTPrinter.h
Unescape View File

@ -4,9 +4,9 @@
class ASTPrinter : public SysYBaseVisitor {
public:
antlrcpp::Any visitFuncRParams(SysYParser::FuncRParamsContext *ctx) override;
// antlrcpp::Any visitExpAsRParam(SysYParser::ExpAsRParamContext *ctx) override;
antlrcpp::Any visitStringAsRParam(SysYParser::StringAsRParamContext *ctx) override;
// antlrcpp::Any visitStringAsRParam(SysYParser::StringAsRParamContext *ctx) override;
antlrcpp::Any visitNumber(SysYParser::NumberContext *ctx) override;
antlrcpp::Any visitString(SysYParser::StringContext *ctx) override;
};

30
src/SysY.g4
Unescape View File

@ -6,23 +6,16 @@ grammar SysY;
Comma: ',';
IntLiteral: [0-9]+ | '0x' [0-9a-fA-F]+ | '0X' [0-9a-fA-F]+;
fragment Decimal: [0-9];
fragment Octal: [0-7];
fragment Heximal: [0-9a-fA-F];
fragment NonZeroDecimal: [1-9];
fragment HexadecimalDigits:
'0x' [0-9a-fA-F]+
| '0X' [0-9a-fA-F]+;
IntConst: NonZeroDecimal Decimal*
| '0' Octal+
| ('0x' | '0X') Heximal+;
fragment ExponentPart: [eE] [+-] [0-9]+;
fragment FractionPart: [0-9]* '.' [0-9]+ | [0-9]+ '.';
FloatLiteral:
FractionPart (ExponentPart)?
| [0-9]+ ExponentPart
| (HexadecimalDigits)? '.' HexadecimalDigits
| HexadecimalDigits '.';
STRING: '"' (ESC | .)*? '"';
String: '"' (ESC | .)*? '"';
fragment ESC: '\\"' | '\\\\';
@ -35,8 +28,9 @@ COMMENT: '/*' .*? '*/' -> skip;
/* Syntax rules */
/*===-------------------------------------------===*/
funcRParams: funcRParam (Comma funcRParam)*;
funcRParams: funcRParam (Comma funcRParam)* EOF;
funcRParam: number # expAsRParam | STRING # stringAsRParam;
funcRParam: number # expAsRParam | string # stringAsRParam;
number: IntLiteral | FloatLiteral;
number: IntConst;
string: String;

2
src/sysyc.cpp
Unescape View File

@ -18,7 +18,7 @@ int main(int argc, char **argv) {
cerr << "Failed to open file " << argv[1];
return EXIT_FAILURE;
}
ANTLRInputStream input("1,2,3",5);
ANTLRInputStream input(fin);
SysYLexer lexer(&input);
CommonTokenStream tokens(&lexer);
SysYParser parser(&tokens);

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