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<%# encoding: ASCII -%>
#include "prism/prettyprint.h"
static void
prettyprint_source(pm_buffer_t *output_buffer, const uint8_t *source, size_t length) {
for (size_t index = 0; index < length; index++) {
const uint8_t byte = source[index];
if ((byte <= 0x06) || (byte >= 0x0E && byte <= 0x1F) || (byte >= 0x7F)) {
pm_buffer_append_format(output_buffer, "\\x%02X", byte);
} else {
switch (byte) {
case '\a': pm_buffer_append_string(output_buffer, "\\a", 2); break;
case '\b': pm_buffer_append_string(output_buffer, "\\b", 2); break;
case '\t': pm_buffer_append_string(output_buffer, "\\t", 2); break;
case '\n': pm_buffer_append_string(output_buffer, "\\n", 2); break;
case '\v': pm_buffer_append_string(output_buffer, "\\v", 2); break;
case '\f': pm_buffer_append_string(output_buffer, "\\f", 2); break;
case '\r': pm_buffer_append_string(output_buffer, "\\r", 2); break;
case '"': pm_buffer_append_string(output_buffer, "\\\"", 2); break;
case '#': {
if (index + 1 < length) {
const uint8_t next_byte = source[index + 1];
if (next_byte == '{' || next_byte == '@' || next_byte == '$') {
pm_buffer_append_byte(output_buffer, '\\');
}
}
pm_buffer_append_byte(output_buffer, '#');
break;
}
case '\\': pm_buffer_append_string(output_buffer, "\\\\", 2); break;
default: pm_buffer_append_byte(output_buffer, byte); break;
}
}
}
}
static inline void
prettyprint_location(pm_buffer_t *output_buffer, const pm_parser_t *parser, const pm_location_t *location) {
pm_line_column_t start = pm_newline_list_line_column(&parser->newline_list, location->start);
pm_line_column_t end = pm_newline_list_line_column(&parser->newline_list, location->end);
pm_buffer_append_format(output_buffer, "(%lu,%lu)-(%lu,%lu)", (unsigned long) (start.line + 1), (unsigned long) start.column, (unsigned long) (end.line + 1), (unsigned long) end.column);
}
static inline void
prettyprint_constant(pm_buffer_t *output_buffer, const pm_parser_t *parser, const pm_constant_id_t constant_id) {
pm_constant_t *constant = pm_constant_pool_id_to_constant(&parser->constant_pool, constant_id);
pm_buffer_append_format(output_buffer, ":%.*s", (int) constant->length, constant->start);
}
static void
prettyprint_node(pm_buffer_t *output_buffer, const pm_parser_t *parser, const pm_node_t *node, pm_buffer_t *prefix_buffer) {
switch (PM_NODE_TYPE(node)) {
case PM_SCOPE_NODE:
// We do not need to print a ScopeNode as it's not part of the AST.
return;
<%- nodes.each do |node| -%>
case <%= node.type %>: {
<%- if node.fields.any? -%>
pm_<%= node.human %>_t *cast = (pm_<%= node.human %>_t *) node;
<%- end -%>
pm_buffer_append_string(output_buffer, "@ <%= node.name %> (location: ", <%= node.name.length + 14 %>);
prettyprint_location(output_buffer, parser, &node->location);
pm_buffer_append_string(output_buffer, ")\n", 2);
<%- node.fields.each_with_index do |field, index| -%>
<%- pointer, preadd, preadd_bytesize = index == node.fields.length - 1 ? ["\\xe2\\x94\\x94\\xe2\\x94\\x80\\xe2\\x94\\x80 ", " ", 4] : ["\\xe2\\x94\\x9c\\xe2\\x94\\x80\\xe2\\x94\\x80 ", "\\xe2\\x94\\x82 ", 6] -%>
// <%= field.name %>
{
pm_buffer_concat(output_buffer, prefix_buffer);
pm_buffer_append_string(output_buffer, "<%= pointer %><%= field.name %>:", <%= 10 + field.name.length + 1 %>);
<%- case field -%>
<%- when Prism::NodeField -%>
pm_buffer_append_byte(output_buffer, '\n');
size_t prefix_length = prefix_buffer->length;
pm_buffer_append_string(prefix_buffer, "<%= preadd %>", <%= preadd_bytesize %>);
pm_buffer_concat(output_buffer, prefix_buffer);
prettyprint_node(output_buffer, parser, (pm_node_t *) cast-><%= field.name %>, prefix_buffer);
prefix_buffer->length = prefix_length;
<%- when Prism::OptionalNodeField -%>
if (cast-><%= field.name %> == NULL) {
pm_buffer_append_string(output_buffer, " \xe2\x88\x85\n", 5);
} else {
pm_buffer_append_byte(output_buffer, '\n');
size_t prefix_length = prefix_buffer->length;
pm_buffer_append_string(prefix_buffer, "<%= preadd %>", <%= preadd_bytesize %>);
pm_buffer_concat(output_buffer, prefix_buffer);
prettyprint_node(output_buffer, parser, (pm_node_t *) cast-><%= field.name %>, prefix_buffer);
prefix_buffer->length = prefix_length;
}
<%- when Prism::StringField -%>
pm_buffer_append_string(output_buffer, " \"", 2);
prettyprint_source(output_buffer, pm_string_source(&cast-><%= field.name %>), pm_string_length(&cast-><%= field.name %>));
pm_buffer_append_string(output_buffer, "\"\n", 2);
<%- when Prism::NodeListField -%>
pm_buffer_append_format(output_buffer, " (length: %lu)\n", (unsigned long) (cast-><%= field.name %>.size));
size_t last_index = cast-><%= field.name %>.size;
for (uint32_t index = 0; index < last_index; index++) {
size_t prefix_length = prefix_buffer->length;
pm_buffer_append_string(prefix_buffer, "<%= preadd %>", <%= preadd_bytesize %>);
pm_buffer_concat(output_buffer, prefix_buffer);
if (index == last_index - 1) {
pm_buffer_append_string(output_buffer, "\xe2\x94\x94\xe2\x94\x80\xe2\x94\x80 ", 10);
pm_buffer_append_string(prefix_buffer, " ", 4);
} else {
pm_buffer_append_string(output_buffer, "\xe2\x94\x9c\xe2\x94\x80\xe2\x94\x80 ", 10);
pm_buffer_append_string(prefix_buffer, "\xe2\x94\x82 ", 6);
}
prettyprint_node(output_buffer, parser, (pm_node_t *) cast-><%= field.name %>.nodes[index], prefix_buffer);
prefix_buffer->length = prefix_length;
}
<%- when Prism::ConstantField -%>
pm_buffer_append_byte(output_buffer, ' ');
prettyprint_constant(output_buffer, parser, cast-><%= field.name %>);
pm_buffer_append_byte(output_buffer, '\n');
<%- when Prism::OptionalConstantField -%>
if (cast-><%= field.name %> == 0) {
pm_buffer_append_string(output_buffer, " \xe2\x88\x85\n", 5);
} else {
pm_buffer_append_byte(output_buffer, ' ');
prettyprint_constant(output_buffer, parser, cast-><%= field.name %>);
pm_buffer_append_byte(output_buffer, '\n');
}
<%- when Prism::ConstantListField -%>
pm_buffer_append_string(output_buffer, " [", 2);
for (uint32_t index = 0; index < cast-><%= field.name %>.size; index++) {
if (index != 0) pm_buffer_append_string(output_buffer, ", ", 2);
prettyprint_constant(output_buffer, parser, cast-><%= field.name %>.ids[index]);
}
pm_buffer_append_string(output_buffer, "]\n", 2);
<%- when Prism::LocationField -%>
pm_location_t *location = &cast-><%= field.name %>;
pm_buffer_append_byte(output_buffer, ' ');
prettyprint_location(output_buffer, parser, location);
pm_buffer_append_string(output_buffer, " = \"", 4);
prettyprint_source(output_buffer, location->start, (size_t) (location->end - location->start));
pm_buffer_append_string(output_buffer, "\"\n", 2);
<%- when Prism::OptionalLocationField -%>
pm_location_t *location = &cast-><%= field.name %>;
if (location->start == NULL) {
pm_buffer_append_string(output_buffer, " \xe2\x88\x85\n", 5);
} else {
pm_buffer_append_byte(output_buffer, ' ');
prettyprint_location(output_buffer, parser, location);
pm_buffer_append_string(output_buffer, " = \"", 4);
prettyprint_source(output_buffer, location->start, (size_t) (location->end - location->start));
pm_buffer_append_string(output_buffer, "\"\n", 2);
}
<%- when Prism::UInt8Field, Prism::UInt32Field -%>
pm_buffer_append_format(output_buffer, " %d\n", cast-><%= field.name %>);
<%- when Prism::FlagsField -%>
bool found = false;
<%- found = flags.find { |flag| flag.name == field.kind }.tap { |found| raise "Expected to find #{field.kind}" unless found } -%>
<%- found.values.each do |value| -%>
if (cast->base.<%= field.name %> & PM_<%= found.human.upcase %>_<%= value.name %>) {
if (found) pm_buffer_append_byte(output_buffer, ',');
pm_buffer_append_string(output_buffer, " <%= value.name.downcase %>", <%= value.name.bytesize + 1 %>);
found = true;
}
<%- end -%>
if (!found) pm_buffer_append_string(output_buffer, " \xe2\x88\x85", 4);
pm_buffer_append_byte(output_buffer, '\n');
<%- else -%>
<%- raise -%>
<%- end -%>
}
<%- end -%>
break;
}
<%- end -%>
}
}
/**
* Pretty-prints the AST represented by the given node to the given buffer.
*/
PRISM_EXPORTED_FUNCTION void
pm_prettyprint(pm_buffer_t *output_buffer, const pm_parser_t *parser, const pm_node_t *node) {
pm_buffer_t prefix_buffer = { 0 };
prettyprint_node(output_buffer, parser, node, &prefix_buffer);
pm_buffer_free(&prefix_buffer);
}
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