Cross Reference: /external/freetype/src/cff/cf2stack.c

Lines Matching refs:stack
5 /*    Adobe's code for emulating a CFF stack (body).                       */
59     CF2_Stack  stack = NULL;
62     if ( !FT_NEW( stack ) )
65       stack->memory = memory;
66       stack->error  = e;
69     /* allocate the stack buffer */
70     if ( FT_NEW_ARRAY( stack->buffer, stackSize ) )
72       FT_FREE( stack );
76     stack->stackSize = stackSize;
77     stack->top       = stack->buffer;     /* empty stack */
79     return stack;
84   cf2_stack_free( CF2_Stack  stack )
86     if ( stack )
88       FT_Memory  memory = stack->memory;
91       FT_FREE( stack->buffer );
94       FT_FREE( stack );
100   cf2_stack_count( CF2_Stack  stack )
102     return (CF2_UInt)( stack->top - stack->buffer );
107   cf2_stack_pushInt( CF2_Stack  stack,
110     if ( stack->top == stack->buffer + stack->stackSize )
112       CF2_SET_ERROR( stack->error, Stack_Overflow );
113       return;     /* stack overflow */
116     stack->top->u.i  = val;
117     stack->top->type = CF2_NumberInt;
118     stack->top++;
123   cf2_stack_pushFixed( CF2_Stack  stack,
126     if ( stack->top == stack->buffer + stack->stackSize )
128       CF2_SET_ERROR( stack->error, Stack_Overflow );
129       return;     /* stack overflow */
132     stack->top->u.r  = val;
133     stack->top->type = CF2_NumberFixed;
134     stack->top++;
140   cf2_stack_popInt( CF2_Stack  stack )
142     if ( stack->top == stack->buffer )
144       CF2_SET_ERROR( stack->error, Stack_Underflow );
147     if ( stack->top[-1].type != CF2_NumberInt )
149       CF2_SET_ERROR( stack->error, Syntax_Error );
153     stack->top--;
155     return stack->top->u.i;
162   cf2_stack_popFixed( CF2_Stack  stack )
164     if ( stack->top == stack->buffer )
166       CF2_SET_ERROR( stack->error, Stack_Underflow );
170     stack->top--;
172     switch ( stack->top->type )
175       return cf2_intToFixed( stack->top->u.i );
177       return cf2_fracToFixed( stack->top->u.f );
179       return stack->top->u.r;
187   cf2_stack_getReal( CF2_Stack  stack,
190     FT_ASSERT( cf2_stack_count( stack ) <= stack->stackSize );
192     if ( idx >= cf2_stack_count( stack ) )
194       CF2_SET_ERROR( stack->error, Stack_Overflow );
198     switch ( stack->buffer[idx].type )
201       return cf2_intToFixed( stack->buffer[idx].u.i );
203       return cf2_fracToFixed( stack->buffer[idx].u.f );
205       return stack->buffer[idx].u.r;
210   /* provide random access to stack */
212   cf2_stack_setReal( CF2_Stack  stack,
216     if ( idx > cf2_stack_count( stack ) )
218       CF2_SET_ERROR( stack->error, Stack_Overflow );
222     stack->buffer[idx].u.r  = val;
223     stack->buffer[idx].type = CF2_NumberFixed;
227   /* discard (pop) num values from stack */
229   cf2_stack_pop( CF2_Stack  stack,
232     if ( num > cf2_stack_count( stack ) )
234       CF2_SET_ERROR( stack->error, Stack_Underflow );
237     stack->top -= num;
242   cf2_stack_roll( CF2_Stack  stack,
255     if ( (CF2_UInt)count > cf2_stack_count( stack ) )
257       CF2_SET_ERROR( stack->error, Stack_Overflow );
277     /*   stack indices before roll:  7 6 5 4 3 2 1 0     */
278     /*   stack indices after roll:   1 0 7 6 5 4 3 2     */
305         last = stack->buffer[idx];
314       tmp                = stack->buffer[idx];
315       stack->buffer[idx] = last;
322   cf2_stack_clear( CF2_Stack  stack )
324     stack->top = stack->buffer;