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path: root/src/glsl/pp/sl_pp_process.c
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Diffstat (limited to 'src/glsl/pp/sl_pp_process.c')
-rw-r--r--src/glsl/pp/sl_pp_process.c245
1 files changed, 143 insertions, 102 deletions
diff --git a/src/glsl/pp/sl_pp_process.c b/src/glsl/pp/sl_pp_process.c
index e2adc2a021..f89986dd8e 100644
--- a/src/glsl/pp/sl_pp_process.c
+++ b/src/glsl/pp/sl_pp_process.c
@@ -27,19 +27,11 @@
#include <stdlib.h>
#include <string.h>
+#include "sl_pp_context.h"
#include "sl_pp_process.h"
#include "sl_pp_public.h"
-static void
-skip_whitespace(const struct sl_pp_token_info *input,
- unsigned int *pi)
-{
- while (input[*pi].token == SL_PP_WHITESPACE) {
- (*pi)++;
- }
-}
-
int
sl_pp_process_out(struct sl_pp_process_state *state,
const struct sl_pp_token_info *token)
@@ -67,133 +59,157 @@ sl_pp_process_out(struct sl_pp_process_state *state,
}
int
-sl_pp_process(struct sl_pp_context *context,
- const struct sl_pp_token_info *input,
- struct sl_pp_token_info **output)
+sl_pp_process_get(struct sl_pp_context *context,
+ struct sl_pp_token_info *output)
{
- unsigned int i = 0;
- int found_eof = 0;
- struct sl_pp_process_state state;
+ if (!context->process_state.out) {
+ if (context->line > 1) {
+ struct sl_pp_token_info ti;
- memset(&state, 0, sizeof(state));
+ ti.token = SL_PP_LINE;
+ ti.data.line.lineno = context->line - 1;
+ ti.data.line.fileno = context->file;
+ if (sl_pp_process_out(&context->process_state, &ti)) {
+ strcpy(context->error_msg, "out of memory");
+ return -1;
+ }
- if (context->line > 1) {
- struct sl_pp_token_info ti;
+ ti.token = SL_PP_NEWLINE;
+ if (sl_pp_process_out(&context->process_state, &ti)) {
+ strcpy(context->error_msg, "out of memory");
+ return -1;
+ }
+ }
+ }
- ti.token = SL_PP_LINE;
- ti.data.line.lineno = context->line - 1;
- ti.data.line.fileno = context->file;
- if (sl_pp_process_out(&state, &ti)) {
- strcpy(context->error_msg, "out of memory");
- return -1;
+ for (;;) {
+ struct sl_pp_token_info input;
+ int found_eof = 0;
+
+ if (context->process_state.out_len) {
+ *output = context->process_state.out[0];
+
+ if (context->process_state.out_len > 1) {
+ unsigned int i;
+
+ for (i = 1; i < context->process_state.out_len; i++) {
+ context->process_state.out[i - 1] = context->process_state.out[i];
+ }
+ }
+ context->process_state.out_len--;
+
+ return 0;
}
- ti.token = SL_PP_NEWLINE;
- if (sl_pp_process_out(&state, &ti)) {
- strcpy(context->error_msg, "out of memory");
+ if (sl_pp_token_buffer_skip_white(&context->tokens, &input)) {
return -1;
}
- }
-
- while (!found_eof) {
- skip_whitespace(input, &i);
- if (input[i].token == SL_PP_HASH) {
- i++;
- skip_whitespace(input, &i);
- switch (input[i].token) {
+ if (input.token == SL_PP_HASH) {
+ if (sl_pp_token_buffer_skip_white(&context->tokens, &input)) {
+ return -1;
+ }
+ switch (input.token) {
case SL_PP_IDENTIFIER:
{
int name;
int found_eol = 0;
- unsigned int first;
- unsigned int last;
struct sl_pp_token_info endof;
+ struct sl_pp_token_peek peek;
+ int result = 0;
/* Directive name. */
- name = input[i].data.identifier;
- i++;
- skip_whitespace(input, &i);
+ name = input.data.identifier;
- first = i;
+ if (sl_pp_token_buffer_skip_white(&context->tokens, &input)) {
+ return -1;
+ }
+ sl_pp_token_buffer_unget(&context->tokens, &input);
+
+ if (sl_pp_token_peek_init(&peek, &context->tokens)) {
+ return -1;
+ }
while (!found_eol) {
- switch (input[i].token) {
+ if (sl_pp_token_peek_get(&peek, &input)) {
+ sl_pp_token_peek_destroy(&peek);
+ return -1;
+ }
+ switch (input.token) {
case SL_PP_NEWLINE:
/* Preserve newline just for the sake of line numbering. */
- endof = input[i];
- i++;
+ endof = input;
found_eol = 1;
break;
case SL_PP_EOF:
- endof = input[i];
- i++;
+ endof = input;
found_eof = 1;
found_eol = 1;
break;
default:
- i++;
+ break;
}
}
- last = i - 1;
-
if (name == context->dict._if) {
- if (sl_pp_process_if(context, input, first, last)) {
- return -1;
+ struct sl_pp_token_buffer buffer;
+
+ result = sl_pp_token_peek_to_buffer(&peek, &buffer);
+ if (result == 0) {
+ result = sl_pp_process_if(context, &buffer);
+ sl_pp_token_buffer_destroy(&buffer);
}
} else if (name == context->dict.ifdef) {
- if (sl_pp_process_ifdef(context, input, first, last)) {
- return -1;
- }
+ result = sl_pp_process_ifdef(context, peek.tokens, 0, peek.size - 1);
} else if (name == context->dict.ifndef) {
- if (sl_pp_process_ifndef(context, input, first, last)) {
- return -1;
- }
+ result = sl_pp_process_ifndef(context, peek.tokens, 0, peek.size - 1);
} else if (name == context->dict.elif) {
- if (sl_pp_process_elif(context, input, first, last)) {
- return -1;
+ struct sl_pp_token_buffer buffer;
+
+ result = sl_pp_token_peek_to_buffer(&peek, &buffer);
+ if (result == 0) {
+ result = sl_pp_process_elif(context, &buffer);
+ sl_pp_token_buffer_destroy(&buffer);
}
} else if (name == context->dict._else) {
- if (sl_pp_process_else(context, input, first, last)) {
- return -1;
- }
+ result = sl_pp_process_else(context, peek.tokens, 0, peek.size - 1);
} else if (name == context->dict.endif) {
- if (sl_pp_process_endif(context, input, first, last)) {
- return -1;
- }
+ result = sl_pp_process_endif(context, peek.tokens, 0, peek.size - 1);
} else if (context->if_value) {
if (name == context->dict.define) {
- if (sl_pp_process_define(context, input, first, last)) {
- return -1;
- }
+ result = sl_pp_process_define(context, peek.tokens, 0, peek.size - 1);
} else if (name == context->dict.error) {
- sl_pp_process_error(context, input, first, last);
- return -1;
+ sl_pp_process_error(context, peek.tokens, 0, peek.size - 1);
+ result = -1;
} else if (name == context->dict.extension) {
- if (sl_pp_process_extension(context, input, first, last, &state)) {
- return -1;
- }
+ result = sl_pp_process_extension(context, peek.tokens, 0, peek.size - 1, &context->process_state);
} else if (name == context->dict.line) {
- if (sl_pp_process_line(context, input, first, last, &state)) {
- return -1;
+ struct sl_pp_token_buffer buffer;
+
+ result = sl_pp_token_peek_to_buffer(&peek, &buffer);
+ if (result == 0) {
+ result = sl_pp_process_line(context, &buffer, &context->process_state);
+ sl_pp_token_buffer_destroy(&buffer);
}
} else if (name == context->dict.pragma) {
- if (sl_pp_process_pragma(context, input, first, last, &state)) {
- return -1;
- }
+ result = sl_pp_process_pragma(context, peek.tokens, 0, peek.size - 1, &context->process_state);
} else if (name == context->dict.undef) {
- if (sl_pp_process_undef(context, input, first, last)) {
- return -1;
- }
+ result = sl_pp_process_undef(context, peek.tokens, 0, peek.size - 1);
} else {
strcpy(context->error_msg, "unrecognised directive name");
- return -1;
+ result = -1;
}
}
- if (sl_pp_process_out(&state, &endof)) {
+ sl_pp_token_peek_commit(&peek);
+ sl_pp_token_peek_destroy(&peek);
+
+ if (result) {
+ return result;
+ }
+
+ if (sl_pp_process_out(&context->process_state, &endof)) {
strcpy(context->error_msg, "out of memory");
return -1;
}
@@ -203,21 +219,19 @@ sl_pp_process(struct sl_pp_context *context,
case SL_PP_NEWLINE:
/* Empty directive. */
- if (sl_pp_process_out(&state, &input[i])) {
+ if (sl_pp_process_out(&context->process_state, &input)) {
strcpy(context->error_msg, "out of memory");
return -1;
}
context->line++;
- i++;
break;
case SL_PP_EOF:
/* Empty directive. */
- if (sl_pp_process_out(&state, &input[i])) {
+ if (sl_pp_process_out(&context->process_state, &input)) {
strcpy(context->error_msg, "out of memory");
return -1;
}
- i++;
found_eof = 1;
break;
@@ -228,36 +242,40 @@ sl_pp_process(struct sl_pp_context *context,
} else {
int found_eol = 0;
+ sl_pp_token_buffer_unget(&context->tokens, &input);
+
while (!found_eol) {
- switch (input[i].token) {
+ if (sl_pp_token_buffer_get(&context->tokens, &input)) {
+ return -1;
+ }
+
+ switch (input.token) {
case SL_PP_WHITESPACE:
/* Drop whitespace all together at this point. */
- i++;
break;
case SL_PP_NEWLINE:
/* Preserve newline just for the sake of line numbering. */
- if (sl_pp_process_out(&state, &input[i])) {
+ if (sl_pp_process_out(&context->process_state, &input)) {
strcpy(context->error_msg, "out of memory");
return -1;
}
context->line++;
- i++;
found_eol = 1;
break;
case SL_PP_EOF:
- if (sl_pp_process_out(&state, &input[i])) {
+ if (sl_pp_process_out(&context->process_state, &input)) {
strcpy(context->error_msg, "out of memory");
return -1;
}
- i++;
found_eof = 1;
found_eol = 1;
break;
case SL_PP_IDENTIFIER:
- if (sl_pp_macro_expand(context, input, &i, NULL, &state,
+ sl_pp_token_buffer_unget(&context->tokens, &input);
+ if (sl_pp_macro_expand(context, &context->tokens, NULL, &context->process_state,
context->if_value ? sl_pp_macro_expand_normal : sl_pp_macro_expand_mute)) {
return -1;
}
@@ -265,22 +283,45 @@ sl_pp_process(struct sl_pp_context *context,
default:
if (context->if_value) {
- if (sl_pp_process_out(&state, &input[i])) {
+ if (sl_pp_process_out(&context->process_state, &input)) {
strcpy(context->error_msg, "out of memory");
return -1;
}
}
- i++;
}
}
}
- }
- if (context->if_ptr != SL_PP_MAX_IF_NESTING) {
- strcpy(context->error_msg, "expected `#endif' directive");
- return -1;
+ if (found_eof) {
+ if (context->if_ptr != SL_PP_MAX_IF_NESTING) {
+ strcpy(context->error_msg, "expected `#endif' directive");
+ return -1;
+ }
+ }
}
+}
- *output = state.out;
- return 0;
+int
+sl_pp_process(struct sl_pp_context *context,
+ struct sl_pp_token_info **output)
+{
+ struct sl_pp_process_state state;
+
+ memset(&state, 0, sizeof(state));
+ for (;;) {
+ struct sl_pp_token_info input;
+
+ if (sl_pp_process_get(context, &input)) {
+ free(state.out);
+ return -1;
+ }
+ if (sl_pp_process_out(&state, &input)) {
+ free(state.out);
+ return -1;
+ }
+ if (input.token == SL_PP_EOF) {
+ *output = state.out;
+ return 0;
+ }
+ }
}
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