finished cleaning up translation system

4ed_file_view.cpp

@@ -1005,8 +1005,8 @@ struct Code_Wrap_State{
     f32 tab_indent_amount;
     f32 byte_advance;
     
-    Buffer_Translating_State tran;
+    Translation_State tran;
-    Buffer_Translating_Emits emits;
+    Translation_Emits emits;
     u32 J;
     Buffer_Model_Step step;
     Buffer_Model_Behavior behavior;

file/4coder_buffer.cpp

@@ -348,14 +348,24 @@ enum{
     BufferModelUnit_Numbers,
 };
 
-struct Buffer_Translating_State{
+struct Translation_State{
     u8 fill_buffer[4];
     u32 fill_start_i;
     u32 fill_i;
     u32 fill_expected;
-    
+};
+global_const Translation_State null_buffer_translating_state = {0};
+
+struct Translation_Byte_Description{
+    u32 byte_class;
+    b32 rebuffer_current;
+    b32 emit_current_as_cp;
+    
+    u32 prelim_emit_type;
+};
+
+struct Translation_Emit_Type{
     u32 byte_class;
-    u32 emit_type;
     b32 rebuffer_current;
     b32 emit_current_as_cp;
     
@@ -364,113 +374,116 @@ struct Buffer_Translating_State{
     b32 do_codepoint;
     b32 do_numbers;
 };
-global_const Buffer_Translating_State null_buffer_translating_state = {0};
 
-struct Buffer_Translating_Emits{
+struct Translation_Emits{
     Buffer_Model_Step steps[5];
     Buffer_Model_Step step_current;
     u32 step_count;
 };
 
 internal void
-translating_consume_byte(Buffer_Translating_State *tran, u8 ch, u32 i, u32 size){
+translating_consume_byte(Translation_State *tran, u8 ch, u32 i, u32 size, Translation_Byte_Description *desc_out){
-    tran->byte_class = 0;
+    desc_out->byte_class = 0;
     if ((ch >= ' ' && ch < 0x7F) || ch == '\t' || ch == '\n' || ch == '\r'){
-        tran->byte_class = 1;
+        desc_out->byte_class = 1;
     }
     else if (ch < 0xC0){
-        tran->byte_class = 1000;
+        desc_out->byte_class = 1000;
     }
     else if (ch < 0xE0){
-        tran->byte_class = 2;
+        desc_out->byte_class = 2;
     }
     else if (ch < 0xF0){
-        tran->byte_class = 3;
+        desc_out->byte_class = 3;
     }
     else{
-        tran->byte_class = 4;
+        desc_out->byte_class = 4;
     }
     
-    tran->emit_type = BufferModelUnit_None;
+    desc_out->prelim_emit_type = BufferModelUnit_None;
-    tran->rebuffer_current = false;
+    desc_out->rebuffer_current = false;
-    tran->emit_current_as_cp = false;
+    desc_out->emit_current_as_cp = false;
     if (tran->fill_expected == 0){
         tran->fill_buffer[0] = ch;
         tran->fill_start_i = i;
         tran->fill_i = 1;
         
-        if (tran->byte_class == 1){
+        if (desc_out->byte_class == 1){
-            tran->emit_type = BufferModelUnit_Codepoint;
+            desc_out->prelim_emit_type = BufferModelUnit_Codepoint;
         }
-        else if (tran->byte_class == 0 || tran->byte_class == 1000){
+        else if (desc_out->byte_class == 0 || desc_out->byte_class == 1000){
-            tran->emit_type = BufferModelUnit_Numbers;
+            desc_out->prelim_emit_type = BufferModelUnit_Numbers;
         }
         else{
-            tran->fill_expected = tran->byte_class;
+            tran->fill_expected = desc_out->byte_class;
         }
     }
     else{
-        if (tran->byte_class == 1000){
+        if (desc_out->byte_class == 1000){
             tran->fill_buffer[tran->fill_i] = ch;
             ++tran->fill_i;
             
             if (tran->fill_i == tran->fill_expected){
-                tran->emit_type = BufferModelUnit_Codepoint;
+                desc_out->prelim_emit_type = BufferModelUnit_Codepoint;
             }
         }
         else{
-            if (tran->byte_class >= 2 && tran->byte_class <= 4){
+            if (desc_out->byte_class >= 2 && desc_out->byte_class <= 4){
-                tran->rebuffer_current = true;
+                desc_out->rebuffer_current = true;
             }
-            else if (tran->byte_class == 1){
+            else if (desc_out->byte_class == 1){
-                tran->emit_current_as_cp = true;
+                desc_out->emit_current_as_cp = true;
             }
             else{
                 tran->fill_buffer[tran->fill_i] = ch;
                 ++tran->fill_i;
             }
-            tran->emit_type = BufferModelUnit_Numbers;
+            desc_out->prelim_emit_type = BufferModelUnit_Numbers;
         }
     }
     
-    if (tran->emit_type == BufferModelUnit_None && i+1 == size){
+    if (desc_out->prelim_emit_type == BufferModelUnit_None && i+1 == size){
-        tran->emit_type = BufferModelUnit_Numbers;
+        desc_out->prelim_emit_type = BufferModelUnit_Numbers;
     }
 }
 
 internal void
-translating_select_emit_type(Buffer_Translating_State *tran){
+translating_select_emit_type(Translation_State *tran, Translation_Byte_Description desc, Translation_Emit_Type *type_out){
-    tran->codepoint = 0;
+    type_out->byte_class = desc.byte_class;
-    tran->codepoint_length = 0;
+    type_out->rebuffer_current = desc.rebuffer_current;
-    tran->do_codepoint = false;
+    type_out->emit_current_as_cp = desc.emit_current_as_cp;
-    tran->do_numbers = false;
+    
-    if (tran->emit_type == BufferModelUnit_Codepoint){
+    type_out->codepoint = 0;
-        tran->codepoint = utf8_to_u32_length_unchecked(tran->fill_buffer, &tran->codepoint_length);
+    type_out->codepoint_length = 0;
-        if ((tran->codepoint >= ' ' && tran->codepoint <= 255 && tran->codepoint != 127) || tran->codepoint == '\t' || tran->codepoint == '\n' || tran->codepoint == '\r'){
+    type_out->do_codepoint = false;
-            tran->do_codepoint = true;
+    type_out->do_numbers = false;
+    if (desc.prelim_emit_type == BufferModelUnit_Codepoint){
+        type_out->codepoint = utf8_to_u32_length_unchecked(tran->fill_buffer, &type_out->codepoint_length);
+        if ((type_out->codepoint >= ' ' && type_out->codepoint <= 255 && type_out->codepoint != 127) || type_out->codepoint == '\t' || type_out->codepoint == '\n' || type_out->codepoint == '\r'){
+            type_out->do_codepoint = true;
         }
         else{
-            tran->do_numbers = true;
+            type_out->do_numbers = true;
         }
     }
-    else if (tran->emit_type == BufferModelUnit_Numbers){
+    else if (desc.prelim_emit_type == BufferModelUnit_Numbers){
-        tran->do_numbers = true;
+        type_out->do_numbers = true;
     }
     
-    Assert((tran->do_codepoint + tran->do_numbers) <= 1);
+    Assert((type_out->do_codepoint + type_out->do_numbers) <= 1);
 }
 
 internal void
-translating_generate_emits(Buffer_Translating_State *tran, u8 ch, u32 i, Buffer_Translating_Emits *emits_out){
+translating_generate_emits(Translation_State *tran, Translation_Emit_Type emit_types, u8 ch, u32 i, Translation_Emits *emits_out){
     emits_out->step_count = 0;
-    if (tran->do_codepoint){
+    if (emit_types.do_codepoint){
         emits_out->steps[0].type = 1;
-        emits_out->steps[0].value = tran->codepoint;
+        emits_out->steps[0].value = emit_types.codepoint;
         emits_out->steps[0].i = tran->fill_start_i;
-        emits_out->steps[0].byte_length = tran->codepoint_length;
+        emits_out->steps[0].byte_length = emit_types.codepoint_length;
         emits_out->step_count = 1;
     }
-    else if (tran->do_numbers){
+    else if (emit_types.do_numbers){
         for (u32 j = 0; j < tran->fill_i; ++j){
             emits_out->steps[j].type = 0;
             emits_out->steps[j].value = tran->fill_buffer[j];
@@ -480,22 +493,22 @@ translating_generate_emits(Buffer_Translating_State *tran, u8 ch, u32 i, Buffer_
         emits_out->step_count = tran->fill_i;
     }
     
-    if (tran->do_codepoint || tran->do_numbers){
+    if (emit_types.do_codepoint || emit_types.do_numbers){
         tran->fill_start_i = 0;
         tran->fill_i = 0;
         tran->fill_expected = 0;
     }
     
-    if (tran->rebuffer_current){
+    if (emit_types.rebuffer_current){
-        Assert(tran->do_codepoint || tran->do_numbers);
+        Assert(emit_types.do_codepoint || emit_types.do_numbers);
         
         tran->fill_buffer[0] = ch;
         tran->fill_start_i = i;
         tran->fill_i = 1;
-        tran->fill_expected = tran->byte_class;
+        tran->fill_expected = emit_types.byte_class;
     }
-    else if (tran->emit_current_as_cp){
+    else if (emit_types.emit_current_as_cp){
-        Assert(tran->do_codepoint || tran->do_numbers);
+        Assert(emit_types.do_codepoint || emit_types.do_numbers);
         
         emits_out->steps[emits_out->step_count].type = 1;
         emits_out->steps[emits_out->step_count].value = ch;
@@ -506,10 +519,12 @@ translating_generate_emits(Buffer_Translating_State *tran, u8 ch, u32 i, Buffer_
 }
 
 internal void
-translating_fully_process_byte(Buffer_Translating_State *tran, u8 ch, u32 i, u32 size, Buffer_Translating_Emits *emits_out){
+translating_fully_process_byte(Translation_State *tran, u8 ch, u32 i, u32 size, Translation_Emits *emits_out){
-    translating_consume_byte(tran, ch, i, size);
+    Translation_Byte_Description description = {0};
-    translating_select_emit_type(tran);
+    translating_consume_byte(tran, ch, i, size, &description);
-    translating_generate_emits(tran, ch, i, emits_out);
+    Translation_Emit_Type emit_type = {0};
+    translating_select_emit_type(tran, description, &emit_type);
+    translating_generate_emits(tran, emit_type, ch, i, emits_out);
 }
 
 internal void
@@ -523,7 +538,6 @@ translation_step_read(Buffer_Model_Step step, Buffer_Model_Behavior *behavior_ou
             {
                 behavior_out->do_newline = true;
             }break;
-            
             default:
             {
                 behavior_out->do_codepoint_advance = true;
@@ -956,8 +970,8 @@ buffer_measure_character_starts(Gap_Buffer *buffer, i32 *character_starts, i32 m
         skipping_whitespace = 1;
     }
     
-    Buffer_Translating_State tran = {0};
+    Translation_State tran = {0};
-    Buffer_Translating_Emits emits = {0};
+    Translation_Emits emits = {0};
     
     stream.use_termination_character = 1;
     stream.terminator = '\n';
@@ -1037,8 +1051,8 @@ struct Buffer_Measure_Wrap_State{
     b32 did_wrap;
     b32 first_of_the_line;
     
-    Buffer_Translating_State tran;
+    Translation_State tran;
-    Buffer_Translating_Emits emits;
+    Translation_Emits emits;
     u32 J;
     Buffer_Model_Step step;
     Buffer_Model_Behavior behavior;
@@ -1297,8 +1311,8 @@ buffer_remeasure_character_starts(Gap_Buffer *buffer, i32 line_start, i32 line_e
     }
     
     // Translation
-    Buffer_Translating_State tran = {0};
+    Translation_State tran = {0};
-    Buffer_Translating_Emits emits = {0};
+    Translation_Emits emits = {0};
     
     stream.use_termination_character = 1;
     stream.terminator = '\n';
@@ -1596,8 +1610,8 @@ struct Buffer_Cursor_Seek_State{
     
     i32 font_height;
     
-    Buffer_Translating_State tran;
+    Translation_State tran;
-    Buffer_Translating_Emits emits;
+    Translation_Emits emits;
     u32 J;
     Buffer_Model_Step step;
     Buffer_Model_Behavior behavior;
@@ -2089,8 +2103,8 @@ struct Buffer_Render_State{
     b32 first_of_the_line;
     i32 wrap_unit_end;
     
-    Buffer_Translating_State tran;
+    Translation_State tran;
-    Buffer_Translating_Emits emits;
+    Translation_Emits emits;
     u32 J;
     Buffer_Model_Step step;
     Buffer_Model_Behavior behavior;

file/4coder_translation.cpp

@@ -0,0 +1,225 @@
+/*
+ * Mr. 4th Dimention - Allen Webster
+ *
+ * 11.03.2017
+ *
+ * Translation system for turning byte streams into a stream of buffer model steps.
+ *
+ */
+
+// TOP
+
+struct Translation_State{
+    u8 fill_buffer[4];
+    u32 fill_start_i;
+    u32 fill_i;
+    u32 fill_expected;
+};
+global_const Translation_State null_buffer_translating_state = {0};
+
+struct Translation_Byte_Description{
+    u32 byte_class;
+    b32 rebuffer_current;
+    b32 emit_current_as_cp;
+    
+    u32 prelim_emit_type;
+};
+
+struct Translation_Emit_Type{
+    u32 byte_class;
+    b32 rebuffer_current;
+    b32 emit_current_as_cp;
+    
+    u32 codepoint;
+    u32 codepoint_length;
+    b32 do_codepoint;
+    b32 do_numbers;
+};
+
+struct Translation_Emits{
+    Buffer_Model_Step steps[5];
+    Buffer_Model_Step step_current;
+    u32 step_count;
+};
+
+internal void
+translating_consume_byte(Translation_State *tran, u8 ch, u32 i, u32 size, Translation_Byte_Description *desc_out){
+    desc_out->byte_class = 0;
+    if ((ch >= ' ' && ch < 0x7F) || ch == '\t' || ch == '\n' || ch == '\r'){
+        desc_out->byte_class = 1;
+    }
+    else if (ch < 0xC0){
+        desc_out->byte_class = 1000;
+    }
+    else if (ch < 0xE0){
+        desc_out->byte_class = 2;
+    }
+    else if (ch < 0xF0){
+        desc_out->byte_class = 3;
+    }
+    else{
+        desc_out->byte_class = 4;
+    }
+    
+    desc_out->prelim_emit_type = BufferModelUnit_None;
+    desc_out->rebuffer_current = false;
+    desc_out->emit_current_as_cp = false;
+    if (tran->fill_expected == 0){
+        tran->fill_buffer[0] = ch;
+        tran->fill_start_i = i;
+        tran->fill_i = 1;
+        
+        if (desc_out->byte_class == 1){
+            desc_out->prelim_emit_type = BufferModelUnit_Codepoint;
+        }
+        else if (desc_out->byte_class == 0 || desc_out->byte_class == 1000){
+            desc_out->prelim_emit_type = BufferModelUnit_Numbers;
+        }
+        else{
+            tran->fill_expected = desc_out->byte_class;
+        }
+    }
+    else{
+        if (desc_out->byte_class == 1000){
+            tran->fill_buffer[tran->fill_i] = ch;
+            ++tran->fill_i;
+            
+            if (tran->fill_i == tran->fill_expected){
+                desc_out->prelim_emit_type = BufferModelUnit_Codepoint;
+            }
+        }
+        else{
+            if (desc_out->byte_class >= 2 && desc_out->byte_class <= 4){
+                desc_out->rebuffer_current = true;
+            }
+            else if (desc_out->byte_class == 1){
+                desc_out->emit_current_as_cp = true;
+            }
+            else{
+                tran->fill_buffer[tran->fill_i] = ch;
+                ++tran->fill_i;
+            }
+            desc_out->prelim_emit_type = BufferModelUnit_Numbers;
+        }
+    }
+    
+    if (desc_out->prelim_emit_type == BufferModelUnit_None && i+1 == size){
+        desc_out->prelim_emit_type = BufferModelUnit_Numbers;
+    }
+}
+
+internal void
+translating_select_emit_type(Translation_State *tran, Translation_Byte_Description desc, Translation_Emit_Type *type_out){
+    type_out->byte_class = desc.byte_class;
+    type_out->rebuffer_current = desc.rebuffer_current;
+    type_out->emit_current_as_cp = desc.emit_current_as_cp;
+    
+    type_out->codepoint = 0;
+    type_out->codepoint_length = 0;
+    type_out->do_codepoint = false;
+    type_out->do_numbers = false;
+    if (desc.prelim_emit_type == BufferModelUnit_Codepoint){
+        type_out->codepoint = utf8_to_u32_length_unchecked(tran->fill_buffer, &type_out->codepoint_length);
+        if ((type_out->codepoint >= ' ' && type_out->codepoint <= 255 && type_out->codepoint != 127) || type_out->codepoint == '\t' || type_out->codepoint == '\n' || type_out->codepoint == '\r'){
+            type_out->do_codepoint = true;
+        }
+        else{
+            type_out->do_numbers = true;
+        }
+    }
+    else if (desc.prelim_emit_type == BufferModelUnit_Numbers){
+        type_out->do_numbers = true;
+    }
+    
+    Assert((type_out->do_codepoint + type_out->do_numbers) <= 1);
+}
+
+internal void
+translating_generate_emits(Translation_State *tran, Translation_Emit_Type emit_types, u8 ch, u32 i, Translation_Emits *emits_out){
+    emits_out->step_count = 0;
+    if (emit_types.do_codepoint){
+        emits_out->steps[0].type = 1;
+        emits_out->steps[0].value = emit_types.codepoint;
+        emits_out->steps[0].i = tran->fill_start_i;
+        emits_out->steps[0].byte_length = emit_types.codepoint_length;
+        emits_out->step_count = 1;
+    }
+    else if (emit_types.do_numbers){
+        for (u32 j = 0; j < tran->fill_i; ++j){
+            emits_out->steps[j].type = 0;
+            emits_out->steps[j].value = tran->fill_buffer[j];
+            emits_out->steps[j].i = tran->fill_start_i + j;
+            emits_out->steps[j].byte_length = 1;
+        }
+        emits_out->step_count = tran->fill_i;
+    }
+    
+    if (emit_types.do_codepoint || emit_types.do_numbers){
+        tran->fill_start_i = 0;
+        tran->fill_i = 0;
+        tran->fill_expected = 0;
+    }
+    
+    if (emit_types.rebuffer_current){
+        Assert(emit_types.do_codepoint || emit_types.do_numbers);
+        
+        tran->fill_buffer[0] = ch;
+        tran->fill_start_i = i;
+        tran->fill_i = 1;
+        tran->fill_expected = emit_types.byte_class;
+    }
+    else if (emit_types.emit_current_as_cp){
+        Assert(emit_types.do_codepoint || emit_types.do_numbers);
+        
+        emits_out->steps[emits_out->step_count].type = 1;
+        emits_out->steps[emits_out->step_count].value = ch;
+        emits_out->steps[emits_out->step_count].i = i;
+        emits_out->steps[emits_out->step_count].byte_length = 1;
+        ++emits_out->step_count;
+    }
+}
+
+internal void
+translating_fully_process_byte(Translation_State *tran, u8 ch, u32 i, u32 size, Translation_Emits *emits_out){
+    Translation_Byte_Description description = {0};
+    translating_consume_byte(tran, ch, i, size, &description);
+    Translation_Emit_Type emit_type = {0};
+    translating_select_emit_type(tran, description, &emit_type);
+    translating_generate_emits(tran, emit_type, ch, i, emits_out);
+}
+
+internal void
+translation_step_read(Buffer_Model_Step step, Buffer_Model_Behavior *behavior_out){
+    behavior_out->do_newline = false;
+    behavior_out->do_codepoint_advance = false;
+    behavior_out->do_number_advance = false;
+    if (step.type == 1){
+        switch (step.value){
+            case '\n':
+            {
+                behavior_out->do_newline = true;
+            }break;
+            default:
+            {
+                behavior_out->do_codepoint_advance = true;
+            }break;
+        }
+    }
+    else{
+        behavior_out->do_number_advance = true;
+    }
+}
+
+#define TRANSLATION_DECL_OUTPUT(_j,_emit) u32 _j = 0; _j < (_emit).step_count; ++_j
+#define TRANSLATION_DECL_GET_STEP(_step,_behav,_j,_emit)                 \
+Buffer_Model_Step _step = _emit.steps[_j]; Buffer_Model_Behavior _behav; \
+translation_step_read(_step, &_behav)
+
+#define TRANSLATION_OUTPUT(_j,_emit) _j = 0; _j < (_emit).step_count; ++_j
+#define TRANSLATION_GET_STEP(_step,_behav,_j,_emit)\
+(_step) = _emit.steps[_j]; translation_step_read((_step), &(_behav))
+
+// BOTTOM
+
+
+