diff options
Diffstat (limited to 'c_compiler/src/c_parser.y')
| -rw-r--r-- | c_compiler/src/c_parser.y | 236 |
1 files changed, 217 insertions, 19 deletions
diff --git a/c_compiler/src/c_parser.y b/c_compiler/src/c_parser.y index 7a3899b..2864907 100644 --- a/c_compiler/src/c_parser.y +++ b/c_compiler/src/c_parser.y @@ -18,13 +18,15 @@ void yyerror(const char *); Node* node; TranslationUnit* trans_unit; Function* function; + Statement* statement; + Declaration* declaration; + Expression* expression; Type* type; Initializer* initializer; - Declaration* declaration; double number; std::string* string; } - + %token T_TYPE_SPEC T_TYPE_QUAL T_STRG_SPEC T_IDENTIFIER T_SC T_CMA T_LRB T_LCB T_RCB T_LSB T_RSB T_QU T_COL T_LOG_OR T_LOG_AND T_OR T_XOR T_AND T_EQUALITY_OP T_REL_OP T_SHIFT_OP T_MULT T_DIV T_REM T_TILDE T_NOT T_DOT T_ARROW T_INCDEC @@ -33,6 +35,7 @@ void yyerror(const char *); %nonassoc T_RRB %nonassoc T_ELSE + %type <node> ExternalDeclaration @@ -40,18 +43,30 @@ void yyerror(const char *); %type <function> FunctionDefinition -%type <declaration> Parameter Declaration InitDeclaratorList InitDeclarator ParameterList +%type <statement> StatementList Statement CompoundStatement CompoundStatement_2 + SelectionStatement + ExpressionStatement JumpStatement IterationStatement + +%type <declaration> ParameterList Parameter DeclarationList Declaration InitDeclaratorList + InitDeclarator + IdentifierList -%type <type> DeclarationSpec +%type <expression> Expression AssignmentExpression ConditionalExpression LogicalOrExpression + LogicalAndExpression InclusiveOrExpression ExclusiveOrExpression + AndExpression EqualityExpression RelationalExpression ShiftExpression + AdditiveExpression MultiplicativeExpression CastExpression UnaryExpression + PostfixExpression PostfixExpression2 ArgumentExpressionList PrimaryExpression + +%type <type> DeclarationSpec DeclarationSpec_T %type <string> Declarator DirectDeclarator + +%type <initializer> Constant %type <number> T_INT_CONST - -%type <initializer> Initializer -%type <string> T_IDENTIFIER T_ASSIGN_OPER T_EQ T_AND T_ADDSUB_OP T_TILDE T_NOT - T_MULT T_DIV T_REM +%type <string> T_IDENTIFIER ASSIGN_OPER T_ASSIGN_OPER T_EQ T_AND T_ADDSUB_OP T_TILDE T_NOT + T_MULT T_DIV T_REM MultDivRemOP UnaryOperator %start ROOT @@ -61,11 +76,11 @@ ROOT: TranslationUnit { g_root = $1; } ; -// TRANSLATION UNIT +// EXTERNAL DEFINITION TranslationUnit: ExternalDeclaration { $$ = new TranslationUnit($1); } - | TranslationUnit ExternalDeclaration { $$->push($2); } +| TranslationUnit ExternalDeclaration { $$->push($2); } ; ExternalDeclaration: @@ -76,13 +91,13 @@ ExternalDeclaration: // FUNCTION DEFINITION FunctionDefinition: - DeclarationSpec T_IDENTIFIER T_LRB ParameterList T_RRB T_SC { $$ = new Function(*$2, $4); } + DeclarationSpec T_IDENTIFIER T_LRB ParameterList T_RRB CompoundStatement { $$ = new Function(*$2, $4, $6); } ; ParameterList: %empty { $$ = new Declaration(); } | Parameter { $$ = $1; } - | ParameterList T_CMA Parameter { $3->addDeclaration($$); $$ = $3; } + | ParameterList T_CMA Parameter { $3->addDeclaration($$); $$ = $3;} ; Parameter: @@ -91,6 +106,11 @@ Parameter: // Declaration +DeclarationList: + Declaration { $$ = $1; } + | DeclarationList Declaration { $2->addDeclaration($$); $$ = $2; } + ; + Declaration: DeclarationSpec InitDeclaratorList T_SC { $$ = $2; } ; @@ -107,19 +127,15 @@ DeclarationSpec_T: ; InitDeclaratorList: - InitDeclarator { $$ = $1; } - | InitDeclaratorList T_CMA InitDeclarator { $3->addDeclaration($$); $$ = $3; } + InitDeclarator { $$ = new Declaration(*$1); } + | InitDeclaratorList T_CMA InitDeclarator { $3->addList($$); $$ = $3; } ; InitDeclarator: Declarator { $$ = new Declaration(*$1); } - | Declarator T_EQ Initializer { $$ = new Declaration(*$1); } + | Declarator T_EQ AssignmentExpression { $$ = new Declaration(*$1); } ; -Initializer: - T_INT_CONST { $$ = new Initializer(); } - ; - Declarator: DirectDeclarator { $$ = $1; } | T_MULT DirectDeclarator { $$ = $2; } @@ -127,6 +143,188 @@ Declarator: DirectDeclarator: T_IDENTIFIER { $$ = $1; } + | T_LRB Declarator T_RRB { $$ = $2; } + | DirectDeclarator T_LSB ConditionalExpression T_RSB { $$ = $1; } + | DirectDeclarator T_LSB T_RSB { $$ = $1; } + | DirectDeclarator T_LRB ParameterList T_RRB { $$ = $1; } + | DirectDeclarator T_LRB IdentifierList T_RRB { $$ = $1; } + ; + +IdentifierList: + T_IDENTIFIER { $$ = new Declaration(); } + | IdentifierList T_CMA T_IDENTIFIER { $$ = new Declaration(); } + +// Statement + +StatementList: + Statement { $$ = $1; } + | StatementList Statement { $2->addStatement($$); $$ = $2; } + ; + +Statement: + CompoundStatement { $$ = $1; } + | SelectionStatement { $$ = $1; } + | ExpressionStatement { $$ = $1; } + | JumpStatement { $$ = $1; } + | IterationStatement { $$ = $1; } + ; + +CompoundStatement: + T_LCB CompoundStatement_2 { $$ = $2; } + ; + +CompoundStatement_2: + T_RCB { $$ = new CompoundStatement; } + | DeclarationList T_RCB { $$ = new CompoundStatement($1); } + | DeclarationList StatementList T_RCB { $$ = new CompoundStatement($1, $2); } + | StatementList T_RCB { $$ = new CompoundStatement($1); } + ; + +SelectionStatement: + T_IF T_LRB Expression T_RRB Statement { $$ = new SelectionStatement($5); } + | T_IF T_LRB Expression T_RRB Statement T_ELSE Statement { $$ = new SelectionStatement($5, $7); } + ; + +ExpressionStatement: + T_SC { $$ = new ExpressionStatement(); } +| Expression T_SC { $$ = new ExpressionStatement(); } + ; + +JumpStatement: + T_RETURN ExpressionStatement { $$ = new JumpStatement(); } + ; + +IterationStatement: + T_WHILE T_LRB Expression T_RRB Statement { $$ = $5; } + | T_DO Statement T_WHILE T_LRB Expression T_RRB T_SC { $$ = $2; } + | T_FOR T_LRB Expression T_SC Expression T_SC Expression T_RRB Statement { $$ = $9; } + ; + +// Expressions + +Expression: + AssignmentExpression { $$ = $1; } + ; + +AssignmentExpression: + ConditionalExpression { $$ = $1; } + | UnaryExpression ASSIGN_OPER AssignmentExpression { $$ = $1; } + ; + +ASSIGN_OPER: + T_ASSIGN_OPER { ; } + | T_EQ { ; } + ; + +ConditionalExpression: + LogicalOrExpression { $$ = $1; } + | LogicalOrExpression T_QU Expression T_COL ConditionalExpression { $$ = $1; } + ; + +LogicalOrExpression: + LogicalAndExpression { $$ = $1; } + | LogicalOrExpression T_LOG_OR LogicalAndExpression { $$ = $3; } + ; + +LogicalAndExpression: + InclusiveOrExpression { $$ = $1; } + | LogicalAndExpression T_LOG_AND InclusiveOrExpression { $$ = $3; } + ; + +InclusiveOrExpression: + ExclusiveOrExpression { $$ = $1; } + | InclusiveOrExpression T_OR ExclusiveOrExpression { $$ = $3; } + ; + +ExclusiveOrExpression: + AndExpression { $$ = $1; } + | ExclusiveOrExpression T_XOR AndExpression { $$ = $3; } + ; + +AndExpression: + EqualityExpression { $$ = $1; } + | AndExpression T_AND EqualityExpression { $$ = $3; } + ; + +EqualityExpression: + RelationalExpression { $$ = $1; } + | EqualityExpression T_EQUALITY_OP RelationalExpression { $$ = $3; } + ; + +RelationalExpression: + ShiftExpression { $$ = $1; } + | RelationalExpression T_REL_OP ShiftExpression { $$ = $3; } + ; + +ShiftExpression: + AdditiveExpression { $$ = $1; } + | ShiftExpression T_SHIFT_OP AdditiveExpression { $$ = $3; } + ; + +AdditiveExpression: + MultiplicativeExpression { $$ = $1; } + | AdditiveExpression T_ADDSUB_OP MultiplicativeExpression { $$ = $3; } + ; + +MultiplicativeExpression: + CastExpression { $$ = $1; } + | MultiplicativeExpression MultDivRemOP CastExpression { $$ = $3; } + ; + +MultDivRemOP: + T_MULT { $$ = $1; } + | T_DIV { $$ = $1; } + | T_REM { $$ = $1; } + ; + +CastExpression: + UnaryExpression { $$ = $1; } + | T_LRB T_TYPE_SPEC T_RRB CastExpression { $$ = $4; } + ; + +UnaryExpression: + PostfixExpression { $$ = $1; } + | T_INCDEC UnaryExpression { $$ = $2; } + | UnaryOperator CastExpression { $$ = $2; } + | T_SIZEOF UnaryExpression { $$ = $2; } + | T_SIZEOF T_LRB T_TYPE_SPEC T_RRB { $$ = new Expression(); } + ; + +UnaryOperator: + T_AND { $$ = $1; } + | T_ADDSUB_OP { $$ = $1; } + | T_MULT { $$ = $1; } + | T_TILDE { $$ = $1; } + | T_NOT { $$ = $1; } + ; + +PostfixExpression: + PrimaryExpression { $$ = $1; } + | PostfixExpression T_LSB Expression T_RSB { $$ = $3; } + | PostfixExpression T_LRB PostfixExpression2 { $$ = $3; } + | PostfixExpression T_DOT T_IDENTIFIER { $$ = new Expression(); } + | PostfixExpression T_ARROW T_IDENTIFIER { $$ = new Expression(); } + | PostfixExpression T_INCDEC { $$ = new Expression(); } + ; + +PostfixExpression2: + T_RRB { $$ = new Expression(); } + | ArgumentExpressionList T_RRB { $$ = new Expression; } + ; + +ArgumentExpressionList: + AssignmentExpression { $$ = new Expression; } + | ArgumentExpressionList T_CMA AssignmentExpression { $$ = new Expression; } + ; + +PrimaryExpression: + T_IDENTIFIER { $$ = new Expression(); } + | Constant { $$ = new Expression($1); } + | T_LRB Expression T_RRB { $$ = $2; } + ; + +Constant: + T_INT_CONST { $$ = new Initializer(); } ; %% |