com.jogamp.gluegen.cgram.GnuCTreeParser.g Maven / Gradle / Ivy
/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Copyright (c) Non, Inc. 1998 -- All Rights Reserved
PROJECT: C Compiler
MODULE: GnuCTreeParser
FILE: GnuCTreeParser.g
AUTHOR: Monty Zukowski ([email protected]) April 28, 1998
DESCRIPTION:
This tree grammar is for a Gnu C AST. No actions in it,
subclass to do something useful.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
header {
package com.jogamp.gluegen.cgram;
import java.io.*;
import antlr.CommonAST;
import antlr.DumpASTVisitor;
}
class GnuCTreeParser extends TreeParser;
options
{
importVocab = GNUC;
buildAST = false;
ASTLabelType = "TNode";
// Copied following options from java grammar.
codeGenMakeSwitchThreshold = 2;
codeGenBitsetTestThreshold = 3;
}
{
int traceDepth = 0;
public void reportError(RecognitionException ex) {
if ( ex != null) {
System.err.println("ANTLR Tree Parsing RecognitionException Error: " + ex.getClass().getName() + " " + ex );
ex.printStackTrace(System.err);
}
}
public void reportError(NoViableAltException ex) {
System.err.println("ANTLR Tree Parsing NoViableAltException Error: " + ex.toString());
TNode.printTree( ex.node );
ex.printStackTrace(System.err);
}
public void reportError(MismatchedTokenException ex) {
if ( ex != null) {
TNode.printTree( ex.node );
System.err.println("ANTLR Tree Parsing MismatchedTokenException Error: " + ex );
ex.printStackTrace(System.err);
}
}
public void reportError(String s) {
System.err.println("ANTLR Error from String: " + s);
}
public void reportWarning(String s) {
System.err.println("ANTLR Warning from String: " + s);
}
protected void match(AST t, int ttype) throws MismatchedTokenException {
//System.out.println("match("+ttype+"); cursor is "+t);
super.match(t, ttype);
}
public void match(AST t, BitSet b) throws MismatchedTokenException {
//System.out.println("match("+b+"); cursor is "+t);
super.match(t, b);
}
protected void matchNot(AST t, int ttype) throws MismatchedTokenException {
//System.out.println("matchNot("+ttype+"); cursor is "+t);
super.matchNot(t, ttype);
}
public void traceIn(String rname, AST t) {
traceDepth += 1;
for (int x=0; x typeName
| expr
)
RPAREN
)
| "__complex"
;
typedefName
: #(NTypedefName ID)
;
structSpecifier
: #( "struct" structOrUnionBody )
;
unionSpecifier
: #( "union" structOrUnionBody )
;
structOrUnionBody
: ( (ID LCURLY) => ID LCURLY
( structDeclarationList )?
RCURLY
| LCURLY
( structDeclarationList )?
RCURLY
| ID
)
;
/*
exception
catch [RecognitionException ex]
{
reportError(ex);
System.out.println("PROBLEM TREE:\n"
+ _t.toStringList());
if (_t!=null) {_t = _t.getNextSibling();}
}
*/
structDeclarationList
: ( structDeclaration )+
;
/*
exception
catch [RecognitionException ex]
{
reportError(ex);
System.out.println("PROBLEM TREE:\n"
+ _t.toStringList());
if (_t!=null) {_t = _t.getNextSibling();}
}
*/
structDeclaration
: specifierQualifierList structDeclaratorList
;
/*
exception
catch [RecognitionException ex]
{
reportError(ex);
System.out.println("PROBLEM TREE:\n"
+ _t.toStringList());
if (_t!=null) {_t = _t.getNextSibling();}
}
*/
specifierQualifierList
: (
typeSpecifier
| typeQualifier
)+
;
/*
exception
catch [RecognitionException ex]
{
reportError(ex);
System.out.println("PROBLEM TREE:\n"
+ _t.toStringList());
if (_t!=null) {_t = _t.getNextSibling();}
}
*/
structDeclaratorList
: ( structDeclarator )+
;
/*
exception
catch [RecognitionException ex]
{
reportError(ex);
System.out.println("PROBLEM TREE:\n"
+ _t.toStringList());
if (_t!=null) {_t = _t.getNextSibling();}
}
*/
structDeclarator
:
#( NStructDeclarator
( declarator )?
( COLON expr )?
( attributeDecl )*
)
;
/*
exception
catch [RecognitionException ex]
{
reportError(ex);
System.out.println("PROBLEM TREE:\n"
+ _t.toStringList());
if (_t!=null) {_t = _t.getNextSibling();}
}
*/
enumSpecifier
: #( "enum"
( ID )?
( LCURLY enumList RCURLY )?
)
;
enumList
: ( enumerator )+
;
enumerator
: ID ( ASSIGN expr )?
;
attributeDecl:
#( "__attribute" (.)* )
| #( NAsmAttribute LPAREN expr RPAREN )
;
initDeclList
: ( initDecl )+
;
initDecl
{ String declName = ""; }
: #( NInitDecl
declarator
( attributeDecl )*
( ASSIGN initializer
| COLON expr
)?
)
;
pointerGroup
: #( NPointerGroup ( STAR ( typeQualifier )* )+ )
;
idList
: ID ( COMMA ID )*
;
initializer
: #( NInitializer (initializerElementLabel)? expr )
| lcurlyInitializer
;
initializerElementLabel
: #( NInitializerElementLabel
(
( LBRACKET expr RBRACKET (ASSIGN)? )
| ID COLON
| DOT ID ASSIGN
)
)
;
lcurlyInitializer
: #( NLcurlyInitializer
initializerList
RCURLY
)
;
initializerList
: ( initializer )*
;
declarator
: #( NDeclarator
( pointerGroup )?
( id:ID
| LPAREN declarator RPAREN
)
( #( NParameterTypeList
(
parameterTypeList
| (idList)?
)
RPAREN
)
| LBRACKET ( expr )? RBRACKET
)*
)
;
parameterTypeList
: ( parameterDeclaration ( COMMA | SEMI )? )+ ( VARARGS )?
;
parameterDeclaration
: #( NParameterDeclaration
declSpecifiers
(declarator | nonemptyAbstractDeclarator)?
)
;
functionDef
: #( NFunctionDef
( functionDeclSpecifiers)?
declarator
(declaration | VARARGS)*
compoundStatement
)
;
/*
exception
catch [RecognitionException ex]
{
reportError(ex);
System.out.println("PROBLEM TREE:\n"
+ _t.toStringList());
if (_t!=null) {_t = _t.getNextSibling();}
}
*/
functionDeclSpecifiers
:
( functionStorageClassSpecifier
| typeQualifier
| typeSpecifier
)+
;
declarationList
:
( //ANTLR doesn't know that declarationList properly eats all the declarations
//so it warns about the ambiguity
options {
warnWhenFollowAmbig = false;
} :
localLabelDecl
| declaration
)+
;
localLabelDecl
: #("__label__" (ID)+ )
;
compoundStatement
: #( NCompoundStatement
( declarationList
| functionDef
)*
( statementList )?
RCURLY
)
;
statementList
: ( statement )+
;
statement
: statementBody
;
statementBody
: SEMI // Empty statements
| compoundStatement // Group of statements
| #(NStatementExpr expr) // Expressions
// Iteration statements:
| #( "while" expr statement )
| #( "do" statement expr )
| #( "for"
expr expr expr
statement
)
// Jump statements:
| #( "goto" expr )
| "continue"
| "break"
| #( "return" ( expr )? )
// Labeled statements:
| #( NLabel ID (statement)? )
| #( "case" expr (statement)? )
| #( "default" (statement)? )
// Selection statements:
| #( "if"
expr statement
( "else" statement )?
)
| #( "switch" expr statement )
;
/*
exception
catch [RecognitionException ex]
{
reportError(ex);
System.out.println("PROBLEM TREE:\n"
+ _t.toStringList());
if (_t!=null) {_t = _t.getNextSibling();}
}
*/
expr
: assignExpr
| conditionalExpr
| logicalOrExpr
| logicalAndExpr
| inclusiveOrExpr
| exclusiveOrExpr
| bitAndExpr
| equalityExpr
| relationalExpr
| shiftExpr
| additiveExpr
| multExpr
| castExpr
| unaryExpr
| postfixExpr
| primaryExpr
| commaExpr
| emptyExpr
| compoundStatementExpr
| initializer
| rangeExpr
| gnuAsmExpr
;
commaExpr
: #(NCommaExpr expr expr)
;
emptyExpr
: NEmptyExpression
;
compoundStatementExpr
: #(LPAREN compoundStatement RPAREN)
;
rangeExpr
: #(NRangeExpr expr VARARGS expr)
;
gnuAsmExpr
: #(NGnuAsmExpr
("volatile")?
LPAREN stringConst
( options { warnWhenFollowAmbig = false; }:
COLON (strOptExprPair ( COMMA strOptExprPair)* )?
( options { warnWhenFollowAmbig = false; }:
COLON (strOptExprPair ( COMMA strOptExprPair)* )?
)?
)?
( COLON stringConst ( COMMA stringConst)* )?
RPAREN
)
;
strOptExprPair
: stringConst ( LPAREN expr RPAREN )?
;
assignExpr
: #( ASSIGN expr expr)
| #( DIV_ASSIGN expr expr)
| #( PLUS_ASSIGN expr expr)
| #( MINUS_ASSIGN expr expr)
| #( STAR_ASSIGN expr expr)
| #( MOD_ASSIGN expr expr)
| #( RSHIFT_ASSIGN expr expr)
| #( LSHIFT_ASSIGN expr expr)
| #( BAND_ASSIGN expr expr)
| #( BOR_ASSIGN expr expr)
| #( BXOR_ASSIGN expr expr)
;
conditionalExpr
: #( QUESTION expr (expr)? COLON expr )
;
logicalOrExpr
: #( LOR expr expr)
;
logicalAndExpr
: #( LAND expr expr )
;
inclusiveOrExpr
: #( BOR expr expr )
;
exclusiveOrExpr
: #( BXOR expr expr )
;
bitAndExpr
: #( BAND expr expr )
;
equalityExpr
: #( EQUAL expr expr)
| #( NOT_EQUAL expr expr)
;
relationalExpr
: #( LT expr expr)
| #( LTE expr expr)
| #( GT expr expr)
| #( GTE expr expr)
;
shiftExpr
: #( LSHIFT expr expr)
| #( RSHIFT expr expr)
;
additiveExpr
: #( PLUS expr expr)
| #( MINUS expr expr)
;
multExpr
: #( STAR expr expr)
| #( DIV expr expr)
| #( MOD expr expr)
;
castExpr
: #( NCast typeName RPAREN expr)
;
typeName
: specifierQualifierList (nonemptyAbstractDeclarator)?
;
nonemptyAbstractDeclarator
: #( NNonemptyAbstractDeclarator
( pointerGroup
( (LPAREN
( nonemptyAbstractDeclarator
| parameterTypeList
)?
RPAREN)
| (LBRACKET (expr)? RBRACKET)
)*
| ( (LPAREN
( nonemptyAbstractDeclarator
| parameterTypeList
)?
RPAREN)
| (LBRACKET (expr)? RBRACKET)
)+
)
)
;
unaryExpr
: #( INC expr )
| #( DEC expr )
| #( NUnaryExpr unaryOperator expr)
| #( "sizeof"
( ( LPAREN typeName )=> LPAREN typeName RPAREN
| expr
)
)
| #( "__alignof"
( ( LPAREN typeName )=> LPAREN typeName RPAREN
| expr
)
)
;
/*
exception
catch [RecognitionException ex]
{
reportError(ex);
System.out.println("PROBLEM TREE:\n"
+ _t.toStringList());
if (_t!=null) {_t = _t.getNextSibling();}
}
*/
unaryOperator
: BAND
| STAR
| PLUS
| MINUS
| BNOT
| LNOT
| LAND
| "__real"
| "__imag"
;
postfixExpr
: #( NPostfixExpr
primaryExpr
( PTR ID
| DOT ID
| #( NFunctionCallArgs (argExprList)? RPAREN )
| LBRACKET expr RBRACKET
| INC
| DEC
)+
)
;
primaryExpr
: ID
| Number
| charConst
| stringConst
// JTC:
// ID should catch the enumerator
// leaving it in gives ambiguous err
// | enumerator
| #( NExpressionGroup expr )
;
argExprList
: ( expr )+
;
protected
charConst
: CharLiteral
;
protected
stringConst
: #(NStringSeq (StringLiteral)+)
;
protected
intConst
: IntOctalConst
| LongOctalConst
| UnsignedOctalConst
| IntIntConst
| LongIntConst
| UnsignedIntConst
| IntHexConst
| LongHexConst
| UnsignedHexConst
;
protected
floatConst
: FloatDoubleConst
| DoubleDoubleConst
| LongDoubleConst
;