[Mesa-dev] [PATCH 3/9] glsl: Fix indentation of switch code.
Eric Anholt
eric at anholt.net
Mon May 14 17:36:54 PDT 2012
I managed to completely trash it in 22d81f15.
---
src/glsl/ast_to_hir.cpp | 545 +++++++++++++++++++++++------------------------
1 file changed, 263 insertions(+), 282 deletions(-)
diff --git a/src/glsl/ast_to_hir.cpp b/src/glsl/ast_to_hir.cpp
index 86bb874..01b1025 100644
--- a/src/glsl/ast_to_hir.cpp
+++ b/src/glsl/ast_to_hir.cpp
@@ -3576,7 +3576,7 @@ ast_switch_statement::hir(exec_list *instructions,
/* Cache test expression.
*/
test_to_hir(instructions, state);
-
+
/* Emit code for body of switch stmt.
*/
body->hir(instructions, state);
@@ -3585,290 +3585,271 @@ ast_switch_statement::hir(exec_list *instructions,
state->switch_state = saved;
- /* Switch statements do not have r-values.
- */
- return NULL;
- }
-
-
- void
- ast_switch_statement::test_to_hir(exec_list *instructions,
- struct _mesa_glsl_parse_state *state)
- {
- void *ctx = state;
-
- /* Cache value of test expression.
- */
- ir_rvalue *const test_val =
- test_expression->hir(instructions,
- state);
-
- state->switch_state.test_var = new(ctx) ir_variable(glsl_type::int_type,
- "switch_test_tmp",
- ir_var_temporary);
- ir_dereference_variable *deref_test_var =
- new(ctx) ir_dereference_variable(state->switch_state.test_var);
-
- instructions->push_tail(state->switch_state.test_var);
- instructions->push_tail(new(ctx) ir_assignment(deref_test_var,
- test_val,
- NULL));
- }
-
-
- ir_rvalue *
- ast_switch_body::hir(exec_list *instructions,
- struct _mesa_glsl_parse_state *state)
- {
- if (stmts != NULL)
- stmts->hir(instructions, state);
-
- /* Switch bodies do not have r-values.
- */
- return NULL;
- }
-
-
- ir_rvalue *
- ast_case_statement_list::hir(exec_list *instructions,
- struct _mesa_glsl_parse_state *state)
- {
- foreach_list_typed (ast_case_statement, case_stmt, link, & this->cases)
- case_stmt->hir(instructions, state);
-
- /* Case statements do not have r-values.
- */
- return NULL;
- }
-
-
- ir_rvalue *
- ast_case_statement::hir(exec_list *instructions,
- struct _mesa_glsl_parse_state *state)
- {
- labels->hir(instructions, state);
-
- /* Conditionally set fallthru state based on break state.
- */
- ir_constant *const false_val = new(state) ir_constant(false);
- ir_dereference_variable *const deref_is_fallthru_var =
- new(state) ir_dereference_variable(state->switch_state.is_fallthru_var);
- ir_dereference_variable *const deref_is_break_var =
- new(state) ir_dereference_variable(state->switch_state.is_break_var);
- ir_assignment *const reset_fallthru_on_break =
- new(state) ir_assignment(deref_is_fallthru_var,
- false_val,
- deref_is_break_var);
- instructions->push_tail(reset_fallthru_on_break);
-
- /* Guard case statements depending on fallthru state.
- */
- ir_dereference_variable *const deref_fallthru_guard =
- new(state) ir_dereference_variable(state->switch_state.is_fallthru_var);
- ir_if *const test_fallthru = new(state) ir_if(deref_fallthru_guard);
-
- foreach_list_typed (ast_node, stmt, link, & this->stmts)
- stmt->hir(& test_fallthru->then_instructions, state);
-
- instructions->push_tail(test_fallthru);
-
- /* Case statements do not have r-values.
- */
- return NULL;
- }
-
-
- ir_rvalue *
- ast_case_label_list::hir(exec_list *instructions,
- struct _mesa_glsl_parse_state *state)
- {
- foreach_list_typed (ast_case_label, label, link, & this->labels)
- label->hir(instructions, state);
-
- /* Case labels do not have r-values.
- */
- return NULL;
- }
-
-
- ir_rvalue *
- ast_case_label::hir(exec_list *instructions,
- struct _mesa_glsl_parse_state *state)
- {
- void *ctx = state;
-
- ir_dereference_variable *deref_fallthru_var =
- new(ctx) ir_dereference_variable(state->switch_state.is_fallthru_var);
-
- ir_rvalue *const true_val = new(ctx) ir_constant(true);
-
- /* If not default case, ...
- */
- if (this->test_value != NULL) {
- /* Conditionally set fallthru state based on
- * comparison of cached test expression value to case label.
- */
- ir_rvalue *const label_rval = this->test_value->hir(instructions, state);
- ir_constant *label_const = label_rval->constant_expression_value();
-
- if (!label_const) {
- YYLTYPE loc = this->test_value->get_location();
-
- _mesa_glsl_error(& loc, state,
- "switch statement case label must be a "
- "constant expression");
-
- /* Stuff a dummy value in to allow processing to continue. */
- label_const = new(ctx) ir_constant(0);
- } else {
- ast_expression *previous_label = (ast_expression *)
- hash_table_find(state->switch_state.labels_ht,
+ /* Switch statements do not have r-values. */
+ return NULL;
+}
+
+
+void
+ast_switch_statement::test_to_hir(exec_list *instructions,
+ struct _mesa_glsl_parse_state *state)
+{
+ void *ctx = state;
+
+ /* Cache value of test expression. */
+ ir_rvalue *const test_val =
+ test_expression->hir(instructions,
+ state);
+
+ state->switch_state.test_var = new(ctx) ir_variable(glsl_type::int_type,
+ "switch_test_tmp",
+ ir_var_temporary);
+ ir_dereference_variable *deref_test_var =
+ new(ctx) ir_dereference_variable(state->switch_state.test_var);
+
+ instructions->push_tail(state->switch_state.test_var);
+ instructions->push_tail(new(ctx) ir_assignment(deref_test_var, test_val,
+ NULL));
+}
+
+
+ir_rvalue *
+ast_switch_body::hir(exec_list *instructions,
+ struct _mesa_glsl_parse_state *state)
+{
+ if (stmts != NULL)
+ stmts->hir(instructions, state);
+
+ /* Switch bodies do not have r-values. */
+ return NULL;
+}
+
+ir_rvalue *
+ast_case_statement_list::hir(exec_list *instructions,
+ struct _mesa_glsl_parse_state *state)
+{
+ foreach_list_typed (ast_case_statement, case_stmt, link, & this->cases)
+ case_stmt->hir(instructions, state);
+
+ /* Case statements do not have r-values. */
+ return NULL;
+}
+
+ir_rvalue *
+ast_case_statement::hir(exec_list *instructions,
+ struct _mesa_glsl_parse_state *state)
+{
+ labels->hir(instructions, state);
+
+ /* Conditionally set fallthru state based on break state. */
+ ir_constant *const false_val = new(state) ir_constant(false);
+ ir_dereference_variable *const deref_is_fallthru_var =
+ new(state) ir_dereference_variable(state->switch_state.is_fallthru_var);
+ ir_dereference_variable *const deref_is_break_var =
+ new(state) ir_dereference_variable(state->switch_state.is_break_var);
+ ir_assignment *const reset_fallthru_on_break =
+ new(state) ir_assignment(deref_is_fallthru_var,
+ false_val,
+ deref_is_break_var);
+ instructions->push_tail(reset_fallthru_on_break);
+
+ /* Guard case statements depending on fallthru state. */
+ ir_dereference_variable *const deref_fallthru_guard =
+ new(state) ir_dereference_variable(state->switch_state.is_fallthru_var);
+ ir_if *const test_fallthru = new(state) ir_if(deref_fallthru_guard);
+
+ foreach_list_typed (ast_node, stmt, link, & this->stmts)
+ stmt->hir(& test_fallthru->then_instructions, state);
+
+ instructions->push_tail(test_fallthru);
+
+ /* Case statements do not have r-values. */
+ return NULL;
+}
+
+
+ir_rvalue *
+ast_case_label_list::hir(exec_list *instructions,
+ struct _mesa_glsl_parse_state *state)
+{
+ foreach_list_typed (ast_case_label, label, link, & this->labels)
+ label->hir(instructions, state);
+
+ /* Case labels do not have r-values. */
+ return NULL;
+}
+
+ir_rvalue *
+ast_case_label::hir(exec_list *instructions,
+ struct _mesa_glsl_parse_state *state)
+{
+ void *ctx = state;
+
+ ir_dereference_variable *deref_fallthru_var =
+ new(ctx) ir_dereference_variable(state->switch_state.is_fallthru_var);
+
+ ir_rvalue *const true_val = new(ctx) ir_constant(true);
+
+ /* If not default case, ... */
+ if (this->test_value != NULL) {
+ /* Conditionally set fallthru state based on
+ * comparison of cached test expression value to case label.
+ */
+ ir_rvalue *const label_rval = this->test_value->hir(instructions, state);
+ ir_constant *label_const = label_rval->constant_expression_value();
+
+ if (!label_const) {
+ YYLTYPE loc = this->test_value->get_location();
+
+ _mesa_glsl_error(& loc, state,
+ "switch statement case label must be a "
+ "constant expression");
+
+ /* Stuff a dummy value in to allow processing to continue. */
+ label_const = new(ctx) ir_constant(0);
+ } else {
+ ast_expression *previous_label = (ast_expression *)
+ hash_table_find(state->switch_state.labels_ht,
+ (void *)(uintptr_t)label_const->value.u[0]);
+
+ if (previous_label) {
+ YYLTYPE loc = this->test_value->get_location();
+ _mesa_glsl_error(& loc, state,
+ "duplicate case value");
+
+ loc = previous_label->get_location();
+ _mesa_glsl_error(& loc, state,
+ "this is the previous case label");
+ } else {
+ hash_table_insert(state->switch_state.labels_ht,
+ this->test_value,
(void *)(uintptr_t)label_const->value.u[0]);
+ }
+ }
+
+ ir_dereference_variable *deref_test_var =
+ new(ctx) ir_dereference_variable(state->switch_state.test_var);
+
+ ir_rvalue *const test_cond = new(ctx) ir_expression(ir_binop_all_equal,
+ glsl_type::bool_type,
+ label_const,
+ deref_test_var);
+
+ ir_assignment *set_fallthru_on_test =
+ new(ctx) ir_assignment(deref_fallthru_var,
+ true_val,
+ test_cond);
+
+ instructions->push_tail(set_fallthru_on_test);
+ } else { /* default case */
+ if (state->switch_state.previous_default) {
+ printf("a\n");
+ YYLTYPE loc = this->get_location();
+ _mesa_glsl_error(& loc, state,
+ "multiple default labels in one switch");
+
+ printf("b\n");
+
+ loc = state->switch_state.previous_default->get_location();
+ _mesa_glsl_error(& loc, state,
+ "this is the first default label");
+ }
+ state->switch_state.previous_default = this;
+
+ /* Set falltrhu state. */
+ ir_assignment *set_fallthru =
+ new(ctx) ir_assignment(deref_fallthru_var, true_val, NULL);
+
+ instructions->push_tail(set_fallthru);
+ }
+
+ /* Case statements do not have r-values. */
+ return NULL;
+}
+
+void
+ast_iteration_statement::condition_to_hir(ir_loop *stmt,
+ struct _mesa_glsl_parse_state *state)
+{
+ void *ctx = state;
+
+ if (condition != NULL) {
+ ir_rvalue *const cond =
+ condition->hir(& stmt->body_instructions, state);
+
+ if ((cond == NULL)
+ || !cond->type->is_boolean() || !cond->type->is_scalar()) {
+ YYLTYPE loc = condition->get_location();
+
+ _mesa_glsl_error(& loc, state,
+ "loop condition must be scalar boolean");
+ } else {
+ /* As the first code in the loop body, generate a block that looks
+ * like 'if (!condition) break;' as the loop termination condition.
+ */
+ ir_rvalue *const not_cond =
+ new(ctx) ir_expression(ir_unop_logic_not, glsl_type::bool_type,
+ cond,
+ NULL);
+
+ ir_if *const if_stmt = new(ctx) ir_if(not_cond);
+
+ ir_jump *const break_stmt =
+ new(ctx) ir_loop_jump(ir_loop_jump::jump_break);
+
+ if_stmt->then_instructions.push_tail(break_stmt);
+ stmt->body_instructions.push_tail(if_stmt);
+ }
+ }
+}
+
+
+ir_rvalue *
+ast_iteration_statement::hir(exec_list *instructions,
+ struct _mesa_glsl_parse_state *state)
+{
+ void *ctx = state;
- if (previous_label) {
- YYLTYPE loc = this->test_value->get_location();
- _mesa_glsl_error(& loc, state,
- "duplicate case value");
-
- loc = previous_label->get_location();
- _mesa_glsl_error(& loc, state,
- "this is the previous case label");
- } else {
- hash_table_insert(state->switch_state.labels_ht,
- this->test_value,
- (void *)(uintptr_t)label_const->value.u[0]);
- }
- }
-
- ir_dereference_variable *deref_test_var =
- new(ctx) ir_dereference_variable(state->switch_state.test_var);
-
- ir_rvalue *const test_cond = new(ctx) ir_expression(ir_binop_all_equal,
- glsl_type::bool_type,
- label_const,
- deref_test_var);
-
- ir_assignment *set_fallthru_on_test =
- new(ctx) ir_assignment(deref_fallthru_var,
- true_val,
- test_cond);
-
- instructions->push_tail(set_fallthru_on_test);
- } else { /* default case */
- if (state->switch_state.previous_default) {
- printf("a\n");
- YYLTYPE loc = this->get_location();
- _mesa_glsl_error(& loc, state,
- "multiple default labels in one switch");
-
- printf("b\n");
-
- loc = state->switch_state.previous_default->get_location();
- _mesa_glsl_error(& loc, state,
- "this is the first default label");
- }
- state->switch_state.previous_default = this;
-
- /* Set falltrhu state.
- */
- ir_assignment *set_fallthru =
- new(ctx) ir_assignment(deref_fallthru_var,
- true_val,
- NULL);
-
- instructions->push_tail(set_fallthru);
- }
-
- /* Case statements do not have r-values.
- */
- return NULL;
- }
-
-
- void
- ast_iteration_statement::condition_to_hir(ir_loop *stmt,
- struct _mesa_glsl_parse_state *state)
- {
- void *ctx = state;
-
- if (condition != NULL) {
- ir_rvalue *const cond =
- condition->hir(& stmt->body_instructions, state);
-
- if ((cond == NULL)
- || !cond->type->is_boolean() || !cond->type->is_scalar()) {
- YYLTYPE loc = condition->get_location();
-
- _mesa_glsl_error(& loc, state,
- "loop condition must be scalar boolean");
- } else {
- /* As the first code in the loop body, generate a block that looks
- * like 'if (!condition) break;' as the loop termination condition.
- */
- ir_rvalue *const not_cond =
- new(ctx) ir_expression(ir_unop_logic_not, glsl_type::bool_type, cond,
- NULL);
-
- ir_if *const if_stmt = new(ctx) ir_if(not_cond);
-
- ir_jump *const break_stmt =
- new(ctx) ir_loop_jump(ir_loop_jump::jump_break);
-
- if_stmt->then_instructions.push_tail(break_stmt);
- stmt->body_instructions.push_tail(if_stmt);
- }
- }
- }
-
-
- ir_rvalue *
- ast_iteration_statement::hir(exec_list *instructions,
- struct _mesa_glsl_parse_state *state)
- {
- void *ctx = state;
-
- /* For-loops and while-loops start a new scope, but do-while loops do not.
- */
- if (mode != ast_do_while)
- state->symbols->push_scope();
-
- if (init_statement != NULL)
- init_statement->hir(instructions, state);
-
- ir_loop *const stmt = new(ctx) ir_loop();
- instructions->push_tail(stmt);
-
- /* Track the current loop nesting.
- */
- ast_iteration_statement *nesting_ast = state->loop_nesting_ast;
-
- state->loop_nesting_ast = this;
-
- /* Likewise, indicate that following code is closest to a loop,
- * NOT closest to a switch.
- */
- bool saved_is_switch_innermost = state->switch_state.is_switch_innermost;
- state->switch_state.is_switch_innermost = false;
-
- if (mode != ast_do_while)
- condition_to_hir(stmt, state);
-
- if (body != NULL)
- body->hir(& stmt->body_instructions, state);
-
- if (rest_expression != NULL)
- rest_expression->hir(& stmt->body_instructions, state);
+ /* For-loops and while-loops start a new scope, but do-while loops do not.
+ `*/
+ if (mode != ast_do_while)
+ state->symbols->push_scope();
+
+ if (init_statement != NULL)
+ init_statement->hir(instructions, state);
+
+ ir_loop *const stmt = new(ctx) ir_loop();
+ instructions->push_tail(stmt);
+
+ /* Track the current loop nesting. */
+ ast_iteration_statement *nesting_ast = state->loop_nesting_ast;
+
+ state->loop_nesting_ast = this;
+
+ /* Likewise, indicate that following code is closest to a loop,
+ * NOT closest to a switch.
+ */
+ bool saved_is_switch_innermost = state->switch_state.is_switch_innermost;
+ state->switch_state.is_switch_innermost = false;
+
+ if (mode != ast_do_while)
+ condition_to_hir(stmt, state);
+
+ if (body != NULL)
+ body->hir(& stmt->body_instructions, state);
+
+ if (rest_expression != NULL)
+ rest_expression->hir(& stmt->body_instructions, state);
+
+ if (mode == ast_do_while)
+ condition_to_hir(stmt, state);
+
+ if (mode != ast_do_while)
+ state->symbols->pop_scope();
- if (mode == ast_do_while)
- condition_to_hir(stmt, state);
-
- if (mode != ast_do_while)
- state->symbols->pop_scope();
-
- /* Restore previous nesting before returning.
- */
- state->loop_nesting_ast = nesting_ast;
- state->switch_state.is_switch_innermost = saved_is_switch_innermost;
+ /* Restore previous nesting before returning. */
+ state->loop_nesting_ast = nesting_ast;
+ state->switch_state.is_switch_innermost = saved_is_switch_innermost;
/* Loops do not have r-values.
*/
--
1.7.10
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